Transverse pushing and sliding device for precast beam and slab
By designing a horizontal top-push sliding device for prefabricated beam slabs, using components such as motors, hydraulic cylinders and magnets, the problem of unstable box beams in complex terrain construction is solved, and the stable slip and safe installation of box beams are achieved.
Patent Information
- Application Number
- CN202420953934.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-06
AI Technical Summary
During bridge construction, when prefabricated box girders are constructed using the overhead push method under complex terrain conditions such as high piers and deep valleys, the fixed structure for the box girder lacks, resulting in the box girder not being stable enough during the slippage and easily shaking.
A prefabricated beam and plate lateral top push slip device is designed, including sliding tracks, sliding steel plates, hydraulic cylinders, motors, screws, clamping plates, rear anchors, steel rods, movable plates and buffer springs, through the motor Drive the screw to clamp the box girder, and the hydraulic cylinder pushes the sliding steel plate, using magnets and springs to provide stability and cushioning to ensure the stability of the box girder during the sliding process.
Effectively prevent the box girder from shaking, ensure the stability of the slip process, and prevent the box girder from crushing the device through the cooperation of magnets and springs, thereby achieving stable slippage and safe installation of the box girder.
Smart Images
Figure CN222183095U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to a prefabricated beam and slab transverse pushing and sliding device. Background Art
[0002] During the construction of bridges, when encountering complex terrain conditions such as high piers, deep valleys, and uninterrupted underbridge traffic lines, it is usually necessary to use the jacking method to complete the crossing operation from the air. By setting up a prefabricated pedestal at the fixed site at the bridge head, and then using the jack to push longitudinally, the beam body is pushed to the installation position through the temporary sliding supports on the top of each pier to achieve prefabricated installation. The jacking method of sliding installation of steel box girders is a common construction method in the construction of bridges. For example, a prefabricated box girder transverse jacking sliding installation system with a publication number of "CN219653542U" is started. The jack uses the push rod to slide the box beam to the installation position close to the high-voltage line. After the jack pushes for a stroke, the oil is returned, and the push rod is lengthened with the push section, and then the box beam is pushed and slid. This push is repeated until the box beam slides to the installation position; vertical jacks are respectively set below the two ends of the box beam on the two cover beams to lift the box beam to a level higher than the box beam bracket, and the box beam bracket is moved away from under the box beam, and part of the slide plate under the box beam is removed, and then the box beam is lowered onto the support, completing the installation of a prefabricated beam, and the next box beam is pushed and installed in the same way;
[0003] When the above mechanism is in use, the box girder is slid to the installation position close to the high-voltage line side by a jack to achieve sliding of the box girder, but there is a lack of structure to fix the box girder, which makes the box girder easy to shake during the sliding process, resulting in insufficient stability of the box girder during the sliding process.
[0004] Therefore, we proposed that the prefabricated beam and slab transverse pushing and sliding device can solve the above problems well. Utility Model Content
[0005] The purpose of the utility model is to provide a prefabricated beam slab transverse pushing and sliding device to solve the problem proposed in the above-mentioned background technology that there is a lack of structure for fixing the box beam, which makes the box beam easy to shake during the sliding process, resulting in the box beam being not stable enough during the sliding process.
[0006] To achieve the above object, the utility model provides the following technical solution: a prefabricated beam slab transverse push sliding device, comprising a sliding track, a sliding steel plate is arranged above the sliding track, and a polytetrafluoroethylene slide plate is fixedly connected to the bottom of the sliding steel plate, and the polytetrafluoroethylene slide plate is slidably arranged on the inner wall of the sliding track;
[0007] A prefabricated beam and slab transverse pushing and sliding device, further comprising:
[0008] The right side of the sliding steel plate is bolted to a hydraulic cylinder, and the right end bolts of the two hydraulic cylinders are installed with rear anchors. The left side of the sliding steel plate is provided with a motor, and the internal bearing of the sliding steel plate is connected to a screw rod.
[0009] The left end of the screw rod passes through the interior of the sliding steel plate, and the left end of the screw rod is fixedly connected to the output end of the motor, and the outer sides of the two ends of the screw rod are sleeved with clamping plates;
[0010] Steel bars are connected through the front and rear ends of the rear anchor, and force-bearing holes are provided at equal intervals at the front and rear ends of the inner wall of the sliding track.
[0011] Preferably, the two clamping plates are threadedly connected to the screw rod, the tops of the two clamping plates penetrate the interior of the sliding steel plate, and the bottoms of the two clamping plates are slidably connected to the inner wall of the sliding steel plate.
[0012] Preferably, the rear anchor is internally rotatably connected with a bidirectional threaded rod, and a rotating rod is connected through the right side of the rear anchor, the left end of the rotating rod is connected to the outer side of the bidirectional threaded rod through a bevel gear set, and the two steel rods are sleeved on both ends of the bidirectional threaded rod.
[0013] Preferably, the two steel rods are threadedly connected to the bidirectional threaded rod, and the outer sides of the two steel rods are slidingly connected to the inner wall of the rear anchor, and the positions of the steel rods and the force-bearing holes correspond one to one, and the rotating rod and the rear anchor are rotationally connected.
[0014] Preferably, a accommodating groove is opened in the middle position inside the sliding steel plate, and a movable plate is arranged in the middle position above the sliding steel plate, guide blocks are slidably connected to the left and right sides of the bottom of the inner wall of the accommodating groove, and the two guide blocks are connected to the movable plate through a connecting plate, and buffer springs are installed between one side of the two guide blocks and the inner wall of the accommodating groove, a movable magnet is installed at the bottom of the movable plate, and a fixed magnet is installed in the middle position of the bottom of the inner wall of the accommodating groove.
[0015] Preferably, both ends of the connecting plate are hingedly connected to the bottom of the movable plate and the top of the guide block respectively.
[0016] Preferably, the positions of the movable magnet and the fixed magnet correspond to each other, and the magnetic poles of the opposing surfaces of the movable magnet and the fixed magnet are the same.
[0017] Compared with the prior art, the utility model has the following beneficial effects: the prefabricated beam and slab transverse pushing and sliding device adopts a new structural design, and its specific contents are as follows:
[0018] (1) The motor drives the screw rod to rotate, so that the two clamping plates move relative to each other and clamp the precast beam plate to ensure the stability of the precast beam plate during the sliding process and prevent shaking during the sliding process. Then, two hydraulic cylinders are used to push the sliding steel plate to move horizontally, so that the PTFE slide plate at the bottom slides in the sliding track, and then the precast beam plate slides to the specified position;
[0019] Furthermore, when the motor drives the screw rod to reverse, the two clamping plates move in opposite directions, so that the clamping plates no longer limit the position of the precast beam plate;
[0020] (2) After the precast beam is dismantled after traveling a certain distance, the staff rotates the rotating rod, so that the rotating rod drives the bidirectional bidirectional threaded rod to rotate by means of the bevel gear set, so that the two steel rods move relative to each other and separate from the load-bearing holes at the initial position. Then, as the precast beam plate slides, the rotating rod is rotated again, so that the two steel rods move in the opposite direction and are inserted into the corresponding load-bearing holes, thereby fixing the hydraulic cylinder and the rear anchor.
[0021] (3) When the precast beam is placed on the sliding steel plate, the movable plate will be forced to move downward, causing the connecting plate to rotate and drive the guide block to move, which in turn causes the guide block to squeeze the buffer spring. Then the movable magnet moves toward the fixed magnet position and uses the principle of magnets repelling each other to make the movable plate generate a reverse force. Combined with the elastic force of the buffer spring, the gravity of the precast beam can be effectively buffered to prevent the precast beam from crushing the device.
[0022] Furthermore, when the prefabricated beam plate is hoisted, the guide block is reset under the elastic force of the buffer spring, and at the same time the connecting plate rotates and pushes the movable plate to reset upward. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0024] Figure 2 This is a schematic diagram of the main structure of the utility model;
[0025] Figure 3 This is a schematic diagram of the top-sectional structure of the rear anchor of the utility model;
[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the rear anchor of the utility model;
[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the movable plate and the connecting plate of the utility model;
[0028] Figure 6 For this utility model Figure 1 The enlarged structural diagram at A in the middle;
[0029] Figure 7 For this utility model Figure 3 Enlarged structural diagram at B in the middle.
[0030] In the figure: 1. sliding track; 2. sliding steel plate; 3. PTFE slide plate; 4. hydraulic cylinder; 5. rear anchor; 6. screw rod; 7. clamping plate; 8. force hole; 9. steel rod; 10. rotating rod; 11. bidirectional threaded rod; 12. movable plate; 13. accommodating groove; 14. guide block; 15. buffer spring; 16. connecting plate; 17. fixed magnet; 18. movable magnet. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] See also Figure 1-Figure 7 , the utility model provides the following technical solutions: a prefabricated beam and slab transverse pushing and sliding device;
[0033] Embodiment 1: In order to solve the problem that the prior art lacks a structure for fixing the box beam, which makes the box beam easy to shake during the sliding process, resulting in the box beam being not stable enough during the sliding process, the following solution is disclosed, and specific reference is made to Figure 1 , Figure 2 and Figure 6 As shown, it includes a sliding track 1, the sliding track 1, a sliding steel plate 2 is arranged above the sliding track 1, and a polytetrafluoroethylene slide plate 3 is fixedly connected to the bottom of the sliding steel plate 2, and the polytetrafluoroethylene slide plate 3 is slidably arranged on the inner wall of the sliding track 1;
[0034] It also includes: the right side of the sliding steel plate 2 is bolted with a hydraulic cylinder 4, and the right end bolts of the two hydraulic cylinders 4 are installed with a rear anchor 5, a motor is arranged on the left side of the sliding steel plate 2, and the internal bearing of the sliding steel plate 2 is connected with a screw rod 6; the left end of the screw rod 6 passes through the interior of the sliding steel plate 2, and the left end of the screw rod 6 is fixedly connected to the output end of the motor, and the outer sides of the two ends of the screw rod 6 are sleeved with clamping plates 7, the two clamping plates 7 and the screw rod 6 are threadedly connected, and the tops of the two clamping plates 7 pass through the interior of the sliding steel plate 2, and the bottoms of the two clamping plates 7 are slidably connected to the inner wall of the sliding steel plate 2; the front and rear ends of the rear anchor 5 are penetrated and connected, and force holes 8 are opened at equal intervals at the front and rear ends of the inner wall of the sliding track 1;
[0035] The precast beam is dropped onto the sliding steel plate 2, and then the motor is started. The motor drives the screw rod 6 to rotate forward, so that the two clamping plates 7 move relative to each other and clamp the precast beam to fix it, thereby ensuring the stability of the precast beam during the sliding process and preventing it from shaking during the sliding process. Then the two hydraulic cylinders 4 are started. The two hydraulic cylinders 4 push the sliding steel plate 2 to move horizontally, so that the bottom Teflon slide plate 3 slides in the sliding track 1, and then the precast beam is slid to the specified position. After that, the motor drives the screw rod 6 to reverse, so that the two clamping plates 7 move in the opposite direction, and the fixation of the precast beam is released, so that the precast beam can be lifted off the sliding steel plate 2.
[0036] Embodiment 2: Different from Embodiment 1, this embodiment uses steel rods 9 to be inserted into force holes 8 at different positions, which can fix the hydraulic cylinder 4 and the rear anchor 5 after pushing for a certain distance, further ensuring the stability of the sliding of the prefabricated beam slab. For details, refer to Figure 1-Figure 3 and Figure 4 and Figure 7 As shown, the rear anchor 5 is internally rotatably connected with a bidirectional threaded rod 11, and the right side of the rear anchor 5 is penetrated and connected with a rotating rod 10, the left end of the rotating rod 10 is connected to the outer side of the bidirectional threaded rod 11 through a bevel gear set, two steel rods 9 are sleeved on both ends of the bidirectional threaded rod 11, the two steel rods 9 are threadedly connected to the bidirectional threaded rod 11, and the outer sides of the two steel rods 9 are slidably connected to the inner wall of the rear anchor 5, and the positions of the steel rods 9 and the force-bearing holes 8 correspond one to one, and the rotating rod 10 is rotatably connected to the rear anchor 5;
[0037] When the prefabricated beam slab has traveled a pushing distance, the staff manually rotates the rotating rod 10 in the opposite direction, so that the rotating rod 10 drives the two-way double-threaded rod 11 to reverse by the bevel gear set, and at the same time, the two steel rods 9 move relative to each other and separate from the force-bearing hole 8 in the initial position, thereby releasing the fixation of the hydraulic cylinder 4 and the rear anchor 5. Then, as the prefabricated beam slab slides for a certain distance, the staff rotates the rotating rod 10 in the forward direction, so that the rotating rod 10 drives the two-way double-threaded rod 11 to rotate forward by the bevel gear set, thereby making the two steel rods 9 move in opposite directions and be inserted into the corresponding force-bearing holes 8, thereby fixing the hydraulic cylinder 4 and the rear anchor 5 after being pushed for a certain distance, thereby further ensuring the stability of the sliding of the prefabricated beam slab.
[0038] Embodiment 3: Different from Embodiment 2, this embodiment utilizes the elastic force of the buffer spring 15 and the repulsive force between the movable magnet 18 and the fixed magnet to effectively buffer the gravity of the prefabricated beam plate and prevent the device from being crushed. For details, refer to Figure 1 , Figure 5 and Figure 6As shown, a receiving groove 13 is provided in the middle position inside the sliding steel plate 2, and a movable plate 12 is provided in the middle position above the sliding steel plate 2, and guide blocks 14 are slidably connected to the left and right sides of the bottom of the inner wall of the receiving groove 13, and the two guide blocks 14 are connected to the movable plate 12 through a connecting plate 16, and the two ends of the connecting plate 16 are respectively hingedly connected to the bottom of the movable plate 12 and the top of the guide block 14, and buffer springs 15 are installed between one side of the two guide blocks 14 and the inner wall of the receiving groove 13, a movable magnet 18 is installed at the bottom of the movable plate 12, and a fixed magnet 17 is installed at the middle position of the bottom of the inner wall of the receiving groove 13, the movable magnet 18 corresponds to the position of the fixed magnet 17, and the magnetic poles of the opposite surfaces of the movable magnet 18 and the fixed magnet 17 are the same;
[0039] When the prefabricated beam is placed on the sliding steel plate 2, the movable plate 12 will be forced to move downward, causing the connecting plate 16 to rotate and drive the guide block 14 to move, and then the guide block 14 will squeeze the buffer spring 15, and then the movable magnet 18 will move toward the fixed magnet 17 position, and use the principle of like-sex magnets repelling each other to make the movable plate 12 generate a reverse force, and combined with the elastic force of the buffer spring 15, it can effectively buffer the gravity of the prefabricated beam to prevent the prefabricated beam from crushing the device. Then when the prefabricated beam is lifted, the guide block 14 will reset under the elastic force of the buffer spring 15, and at the same time the connecting plate 16 will rotate and push the movable plate 12 to reset upward.
[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A prefabricated beam and slab transverse pushing and sliding device, comprising a sliding track (1), wherein a sliding steel plate (2) is arranged above the sliding track (1), and a polytetrafluoroethylene sliding plate (3) is fixedly connected to the bottom of the sliding steel plate (2), and the polytetrafluoroethylene sliding plate (3) is slidably arranged on the inner wall of the sliding track (1); It is characterized in that Also includes: The right side of the sliding steel plate (2) is bolted to a hydraulic cylinder (4), and the right end bolts of the two hydraulic cylinders (4) are installed with rear anchors (5); the left side of the sliding steel plate (2) is provided with a motor, and the internal bearing of the sliding steel plate (2) is connected to a screw rod (6); The left end of the screw rod (6) passes through the interior of the sliding steel plate (2), and the left end of the screw rod (6) is fixedly connected to the output end of the motor, and the outer sides of both ends of the screw rod (6) are sleeved with clamping plates (7); Steel bars (9) are connected through the front and rear ends of the rear anchor (5), and force-bearing holes (8) are provided at equal intervals at the front and rear ends of the inner wall of the sliding track (1).
2. The prefabricated beam and slab transverse pushing and sliding device according to claim 1, characterized in that: The two clamping plates (7) are threadedly connected to the screw rod (6), the tops of the two clamping plates (7) penetrate the interior of the sliding steel plate (2), and the bottoms of the two clamping plates (7) are slidably connected to the inner wall of the sliding steel plate (2).
3. The prefabricated beam and slab transverse pushing and sliding device according to claim 1, characterized in that: A bidirectional threaded rod (11) is rotatably connected inside the rear anchor (5), and a rotating rod (10) is connected through the right side of the rear anchor (5). The left end of the rotating rod (10) is connected to the outer side of the bidirectional threaded rod (11) through a bevel gear set. The two steel rods (9) are sleeved on both ends of the bidirectional threaded rod (11).
4. The prefabricated beam and slab transverse pushing and sliding device according to claim 3 is characterized in that: The two steel bars (9) and the bidirectional threaded rod (11) are both threadedly connected, and the outer sides of the two steel bars (9) and the inner wall of the rear anchor (5) are slidably connected, and the positions of the steel bars (9) and the force-bearing holes (8) correspond one to one, and the rotating rod (10) and the rear anchor (5) are rotationally connected.
5. The prefabricated beam and slab transverse pushing and sliding device according to claim 1, characterized in that: A receiving groove (13) is provided in the middle position inside the sliding steel plate (2), and a movable plate (12) is provided in the middle position above the sliding steel plate (2). Guide blocks (14) are slidably connected to the left and right sides of the bottom of the inner wall of the receiving groove (13), and the two guide blocks (14) are connected to the movable plate (12) via a connecting plate (16). Buffer springs (15) are installed between one side of the two guide blocks (14) and the inner wall of the receiving groove (13). A movable magnet (18) is installed at the bottom of the movable plate (12), and a fixed magnet (17) is installed in the middle position of the bottom of the inner wall of the receiving groove (13).
6. The prefabricated beam and slab transverse pushing and sliding device according to claim 5, characterized in that: Both ends of the connecting plate (16) are hingedly connected to the bottom of the movable plate (12) and the top of the guide block (14).
7. The prefabricated beam and slab transverse pushing and sliding device according to claim 5, characterized in that: The positions of the movable magnet (18) and the fixed magnet (17) correspond to each other, and the magnetic poles of the opposing surfaces of the movable magnet (18) and the fixed magnet (17) are the same.