Self-adaptive fixing device for continuous tensioning jack

Abstract

The utility model discloses a continuous tensioning jack self-adaptive fixing device which comprises a combined supporting plate structure, a side face fixing structure and a multidirectional limiting structure, the combined supporting plate structure is arranged on a concrete slide way and comprises a first supporting plate, a second supporting plate and a third supporting plate, and the first supporting plate is arranged on the side face fixing structure. The first supporting plate is arranged on a concrete slide way, the second supporting plate is arranged on one side of the first supporting plate in a splicing mode, the third supporting plate is arranged on one side of the second supporting plate, and a side face fixing structure is arranged on the third supporting plate. The third supporting plate is used for supporting continuous tensioning jacks of different sizes, and the first supporting plate and the third supporting plate are provided with multi-directional limiting structures. The device can adapt to continuous tensioning jacks and concrete anchor blocks of various sizes; the whole structure is assembled and spliced and is convenient to mount and dismount; the structural strength is high, and the operation stability of the continuous tensioning jack is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, in particular to a self-adaptive fixing device for a continuous tensioning jack. Background Art

[0002] In recent years, my country's bridge construction industry has developed rapidly. Constrained by existing routes and rivers, the number of cross-line and cross-river bridges has increased significantly. Lateral movement and jacking construction play a crucial role in cross-line bridge construction. Continuous tensioning jacks, a core device in jacking construction, precisely control travel speed, ensuring stable translation of the bridge structure along its intended trajectory.

[0003] In order to ensure the normal operation of the continuous tensioning jack during the construction process, the device must be fixed to the traction end set in advance. Therefore, how to effectively anchor the continuous tensioning jack to the concrete block at the traction end is a key problem. In addition, considering that the sizes of the continuous tensioning jacks and concrete anchor blocks used in each construction project are different, how to ensure the fastening connection between concrete anchor blocks of different sizes and continuous tensioning jacks of different specifications is a complex problem in bridge jacking engineering, and a fixing device needs to be further developed. Chinese utility model CN219992202U discloses a jack fixing device for secondary tensioning of cap beams (patent number 202320949117.9). It mainly includes an upper horizontal arm, an oblique arm, a vertical arm combination and a limiting mechanism. The force-bearing structure of this utility model is reasonable, the structural safety performance is reliable, it can be processed once and used repeatedly, and it has high economic value. However, the fixing effect of this device on the jack is slightly insufficient; Chinese utility model CN208249757U discloses a downward-probing tension jack fixing stand (patent number is 201820776561.4). The stand mainly includes a bracket, a vertical rod and a bracket; the bracket includes a leg, a horizontal bar and a crossbeam. The utility model has a simple structure, is easy to use, and can be reused in a variety of scenarios. However, there is still room for improvement in the adaptability of this device to tension jacks of different specifications.

[0004] In summary, in order to ensure that the fixing effect of the jack in jacking construction meets the design requirements, it is urgent to design an adaptive fixing device for continuous tensioning jacks. Utility Model Content

[0005] The technical problem to be solved by the utility model is to solve the problem that the prior art cannot be applied to continuous tensioning jacks and concrete anchor blocks of different sizes, and the overall disassembly and assembly is inconvenient, which increases the construction time.

[0006] In order to solve the above technical problems, the utility model provides an adaptive fixing device for a continuous tensioning jack, including a combined support plate structure, a side fixing structure and a multi-directional limiting structure. The combined support plate structure is arranged on a concrete slide. The combined support plate structure includes a first support plate, a second support plate and a third support plate. The first support plate is arranged on the concrete slide. The second support plate can be assembled and arranged on one side of the first support plate. The third support plate is arranged on one side of the second support plate. The side fixing structure is arranged on the third support plate; the third support plate is used to meet the support of continuous tensioning jacks of different sizes. The first support plate and the third support plate are provided with a multi-directional limiting structure.

[0007] Preferably, a first bolt fixing plate is further provided on one side of the first support plate, and the first bolt fixing plate is fixed to the concrete slideway by bolts, so that the first support plate can be quickly connected to the concrete slideway.

[0008] Preferably, a No. 1 transverse expansion plate is further provided on both sides of the first support plate, and the distance between the two groups of No. 1 transverse expansion plates can be adjusted according to the concrete slide.

[0009] Preferably, a second slidable transverse expansion plate is further provided on both sides of the second support plate, and the second transverse expansion plate is connected to the first transverse expansion plate through a side sliding plate, so that the first transverse expansion plate and the second transverse expansion plate can be connected.

[0010] Preferably, a second support plate front slot is provided on one side of the second support plate, and the second support plate front slot is engaged with the first support plate rear slot, and the first support plate rear slot is provided on one side of the first support plate, so that the first support plate and the second support plate can be assembled and connected.

[0011] Preferably, a third transverse expansion plate is further provided on both sides of the third support plate, and the third transverse expansion plate is connected to the second transverse expansion plate through a side sliding plate, so that the third transverse expansion plate can be connected to the second transverse expansion plate.

[0012] Preferably, a third support plate front slot is provided on one side of the third support plate, the third support plate front slot is engaged with the second support plate rear slot, and the second support plate rear slot is provided on one side of the second support plate, so that the third support plate and the second support plate can be quickly installed.

[0013] Preferably, a first-level telescopic arm is movably provided in the third support plate, and a second-level telescopic arm is movably provided in the first-level telescopic arm, which can be adjusted according to the specifications of the continuous tensioning jack.

[0014] Preferably, the side fixing structure includes a primary fixer and a secondary fixer. The primary fixer is arranged on both sides of the third support plate, and the secondary fixer is arranged on both sides of the primary telescopic arm, which can lock and fix the telescopic positions of the primary telescopic arm and the secondary telescopic arm.

[0015] Preferably, the multi-directional limiting structure includes two groups of side limiting plates, one end of the side limiting plate is arranged in the front support groove, the front support groove is arranged in the front limiting slider, the other end of the side limiting plate is arranged in the rear support groove, the rear support groove is arranged in the rear limiting slider, the front limiting slider is slidably arranged in the front limiting slider slide groove, the front limiting slider slide groove is arranged on the first support plate, the rear limiting slider is slidably arranged in the rear limiting slider slide groove, and the rear limiting slider slide groove is arranged on the secondary telescopic arm, which can laterally fix the continuous tensioning jack.

[0016] The beneficial effects of the utility model are:

[0017] 1. This device can not only adapt to various specifications of continuous tensioning jacks, but also adapt to different sizes of concrete anchor blocks.

[0018] 2. The device has the advantage of being able to be quickly installed and disassembled, which can greatly shorten the construction time.

[0019] 3. The support plates of the device and the side sliding plates and the transverse expansion plates are connected by mortise and tenon structures. These components rely on the firmness of the mortise and tenon structure to make the entire combined support plate and the connection between the support plate and the concrete anchor block more stable, reducing the possibility of displacement of the jack, thereby ensuring that the steel strands tensioned by the continuous tensioning jacks always remain concentric during the construction process, ensuring smooth construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a bridge being pulled by a continuous tensioning jack during bridge jacking construction;

[0021] Figure 2 This is an axonometric diagram of the utility model continuous tensioning jack adaptive device;

[0022] Figure 3 This is a structural diagram of the main body combined support plate of the utility model;

[0023] Figure 4 This is a split diagram of the combined support plate;

[0024] Figure 5 It is a schematic diagram of the connection between the transverse telescopic plate and the side sliding fixed plate.

[0025] In the figure: 1. First support plate, 1a. First bolt fixing plate; 1b. Front limit slider slide; 1c. No. 1 horizontal telescopic plate; 1d. Rear slot of first support plate; 2. Second support plate; 2a. No. 2 horizontal telescopic plate; 2b. Front slot of second support plate; 2c. Rear slot of second support plate; 3. Third support plate; 3a. No. 3 horizontal telescopic plate; 3b. Second bolt fixing plate; 3c. First-level fixer; 3d. First-level telescopic arm; 3e. Second-level fixer; 3f. Second-level telescopic arm; 3g. Rear limit slider slide; 3h. Front slot of third support plate; 4. Prefabricated fixing bolts; 5. Side sliding plate; 6. Front limit slider; 7. Side limit plate; 8. Rear limit slider; 9. Front support slot; 10. Rear support slot; 11. Continuous tensioning jack; 12. Concrete slide; 13. Slider limiter DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. All directional indications in the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship and movement status of the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] See also Figure 1-Figure 5 , an adaptive fixing device for a continuous tensioning jack 11, comprising a combined support plate structure, a side fixing structure and a multi-directional limiting structure, the combined support plate structure is arranged on a concrete slide 12, the combined support plate structure comprises a first support plate 1, a second support plate 2 and a third support plate 3, the first support plate 1 is arranged on the concrete slide 12, the second support plate 2 can be assembled and arranged on one side of the first support plate 1, the third support plate 3 is arranged on one side of the second support plate 2, and a side fixing structure is arranged on the third support plate 3; the third support plate 3 is used to meet the support of continuous tensioning jacks 11 of different sizes, the first support plate 1 and the third support plate 3 are provided with a multi-directional limiting structure, the third support plate 3 is provided with a second bolt fixing plate 3b, which can fix the third support plate 3 on the concrete slide 12, and a first bolt fixing plate 1a is also provided on one side of the first support plate 1, the first bolt fixing plate 1a is fixed to the concrete slide 12 by bolts, so that the first support plate 1 can be quickly connected to the concrete slide 12.

[0028] In one embodiment, a No. 1 transverse expansion plate 1c is further provided on both sides of the first support plate 1. According to the specifications of the concrete slide 12, the No. 1 transverse expansion plate 1c is pulled simultaneously, and the spacing between the two groups of No. 1 transverse expansion plates 1c is adjusted according to the width of the concrete slide 12.

[0029] In one embodiment, a sliding second transverse expansion plate 2a is further provided on both sides of the second support plate 2. The second transverse expansion plate 2a is connected to the first transverse expansion plate 1c through a side sliding plate 5, and the first transverse expansion plate 1c can be connected to the second transverse expansion plate 2a.

[0030] Specifically, see Figure 5 Prefabricated fixing bolts 4 are also embedded in the concrete slide 12 to fix the side sliding plate 5. A second support plate front slot 2b is provided on one side of the second support plate 2. The second support plate front slot 2b is engaged with the first support plate rear slot 1d. The first support plate rear slot 1d is provided on one side of the first support plate 1, so that the first support plate 1 and the second support plate 2 can be assembled and connected. A third transverse expansion plate 3a is also provided on both sides of the third support plate 3. The third transverse expansion plate 3a is connected to the second transverse expansion plate 2a through the side sliding plate 5. The third transverse expansion plate 3a can be connected to the second transverse expansion plate 2a. The side sliding plate 5 is connected to the first transverse expansion plate 1c, the second transverse expansion plate 2a, and the third transverse expansion plate 3a using a mortise and tenon structure. This structural form makes the overall structure relatively small after connection, thereby reducing the weight of the entire device. The mortise and tenon structure has high stability, can significantly improve the overall strength of the fixed structure, reduce the occurrence of diseases, and extend the service life of the device. In addition, this structural form has good disassembly, which makes it easier to maintain, replace and install, reducing manpower consumption and shortening the erection cycle.

[0031] Furthermore, a third support plate front slot 3h is provided on one side of the third support plate 3, and the third support plate front slot 3h is engaged with the second support plate rear slot 2c, and the second support plate rear slot 2c is provided on one side of the second support plate 2, so that the third support plate 3 and the second support plate 2 can be quickly installed.

[0032] See also Figure 3 A first-level telescopic arm 3d is movably provided in the third support plate 3 , and a second-level telescopic arm 3f is movably provided in the first-level telescopic arm 3d , which can be adjusted according to the specifications of the continuous tensioning jack 11 .

[0033] Furthermore, the side fixing structure includes a primary fixer 3c and a secondary fixer 3e. The primary fixer 3c is arranged on both sides of the third support plate 3, and the secondary fixer 3e is arranged on both sides of the primary telescopic arm 3d, which can lock and fix the telescopic position of the primary telescopic arm 3d and the secondary telescopic arm 3f. The contact surfaces of the primary fixer 3c, the secondary fixer 3e and the primary telescopic arm 3d and the secondary telescopic arm 3f are pasted with polyurethane rubber sheets. This material has a high friction coefficient, generally above 0.5, which can enhance the fixing effect of the telescopic arm. In addition, this material has excellent wear resistance, low temperature resistance, and aging resistance, can be used for a long time, and reduces replacement costs. At the same time, the polyurethane rubber sheet has good bonding properties and can be tightly connected to steel, eliminating the occurrence of displacement and deformation, and ensuring the integrity of the structure.

[0034] Furthermore, the multi-directional limiting structure includes two groups of side limiting plates 7, one end of the side limiting plate 7 is arranged in the front support groove 9, the front support groove 9 is arranged in the front limit slider 6, the other end of the side limiting plate 7 is arranged in the rear support groove 10, the rear support groove 10 is arranged in the rear limit slider 8, the front limit slider 6 is slidably arranged in the front limit slider groove 1b, the front limit slider groove 1b is arranged on the first support plate 1, the rear limit slider 8 is slidably arranged in the rear limit slider groove 3g, and the rear limit slider groove 3g is arranged on the secondary telescopic arm 3f, which can laterally fix the continuous tensioning jack 11.

[0035] The specific implementation principles of this application are:

[0036] (1) First, when preparing the concrete slide 12, the required number of prefabricated fixing bolts 4 must be embedded therein. At the same time, the prefabricated fixing bolts 4 must protrude 2 to 3 cm from the side of the concrete slide 12. The protruding portion must correspond to the position of the side sliding plate 5 to ensure a smooth connection between the two. In addition, since the side sliding plate 5 must be located at the connection point between the first support plate 1, the second support plate 2, and the third support plate 3, this operation also determines the position of the first support plate 1.

[0037] (2) Install the first support plate 1 according to the above operation. First, place the first support plate 1 in the designated position and drive the expansion screw into the hole of the first bolt fixing plate 1a to complete the preliminary fixation of the first support plate 1 on the concrete slide 12. Then, lift the No. 1 transverse expansion plate 1c to the longest position to prepare for the subsequent installation of the side sliding plate 5. The number of second support plates 2 to be installed is determined according to the length of the continuous tensioning jack 11 (the number of second support plates 2 is at least 0, and there is no maximum limit). After determining the number, connect the second support plate 2 with the first support plate 1: first connect the front card slot 2b of the second support plate with the rear card slot 1d of the first support plate to form a whole; after fixing, lift the No. 2 transverse expansion plate 2a to the longest position. Then, slide the side sliding plate 5 through the internal slide of the No. 1 transverse expansion plate 1c and move it to the connection between the first support plate 1 and the second support plate 2. At the same time, this operation also successfully connects the No. 1 transverse expansion plate 1c with the No. 2 transverse expansion plate 2a. At this point, the connection between the first support plate 1 and the second support plate 2 is completed. According to the above steps, the required number of second support plates 2 are installed.

[0038] (3) Install the third support plate 3. First, connect the front slot 3h of the third support plate with the rear slot 2c of the second support plate as a whole, and then raise the third transverse telescopic plate 3a to its longest position. Then, slide the side sliding plate 5 into the internal slide of the third transverse telescopic plate 3a and move it to the connection between the second support plate 2 and the third support plate 3. At the same time, this operation also successfully connects the second transverse telescopic plate 2a with the third transverse telescopic plate 3a. At this point, the installation of the combined support plate structure is completed. Afterwards, loosen the first-level fixture 3c at the rear end of the third support plate 3, raise the first-level telescopic arm 3d to its longest position, and tighten the first-level fixture 3c; loosen the second-level fixture 3e, raise the second-level telescopic arm 3f to its longest position, and tighten the second-level fixture 3e. The above operation pulls out all the telescopic arms at the rear end of the third support plate 3, preparing for the subsequent placement of the jack.

[0039] (4) After the combined support plate structure is installed, retract all previously extended transverse expansion plates until the prefabricated fixing bolts 4 successfully pass through the holes in the side sliding plates 5 and are exposed. Then, use the fastening nuts to secure the prefabricated fixing bolts 4 to the side sliding plates 5. At the same time, since the side sliding plates 5 are completely secured and can no longer slide along the internal grooves of the transverse expansion plates, the connection between the combined support plate structures is also more secure.

[0040] (5) Install the front limit slider 6 and the rear limit slider 8 into the corresponding front limit slider slot 1b and the rear limit slider slot 3g, and align them front and back. Then install the side limit plate 7 into the front support slot 9 and the rear support slot 10 to form a multi-directional continuous tensioning jack 11 limiting device. At this point, the entire fixing device is installed. The continuous tensioning jack 11 is placed on the surface of the combined support plate structure by crane, and the front section of the continuous tensioning jack 11 is placed against the front section protrusion of the first support plate 1. Then, slide the front limit plate to clamp the front section of the continuous tensioning jack 11. Then, adjust the length of the first telescopic arm 3d and the second telescopic arm 3f of the third support plate 3 to limit the displacement of the rear of the continuous tensioning jack 11. At the same time, the side limit plate 7 and the rear limit slider 8 will move together during the movement of the front limit slider 6 to complete the multi-directional limiting of the jack. After the limiting is completed, slider limiters 13 are installed on the left and right sides of each front limiting slider 6 and rear limiting slider 8 to limit the front limiting slider 6 and rear limiting slider 8 in place, thereby strengthening the fixing effect of the continuous tensioning jack 11.

[0041] (6) After the tensioning is completed, the continuous tensioning jack 11 is lifted by a crane, the nuts on the side sliding plate 5 are removed, and the combined support plate structure is disassembled and reused to improve the utilization efficiency of the device.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive fixing device for a continuous tensioning jack (11), characterized in that: The invention comprises a combined support plate structure, a side fixing structure and a multi-directional limiting structure, wherein the combined support plate structure is arranged on a concrete slide (12), and the combined support plate structure comprises a first support plate (1), a second support plate (2) and a third support plate (3), wherein the first support plate (1) is arranged on the concrete slide (12), the second support plate (2) can be assembled and arranged on one side of the first support plate (1), the third support plate (3) is arranged on one side of the second support plate (2), and the side fixing structure is arranged on the third support plate (3); the third support plate (3) is used to support continuous tensioning jacks (11) of different sizes, and the first support plate (1) and the third support plate (3) are provided with a multi-directional limiting structure.

2. The adaptive fixing device for a continuous tensioning jack (11) according to claim 1, characterized in that: A first bolt fixing plate (1a) is also provided on one side of the first support plate (1), and the first bolt fixing plate (1a) is fixed to the concrete slideway (12) by means of bolts.

3. The adaptive fixing device for a continuous tensioning jack (11) according to claim 1, characterized in that: A first transverse telescopic plate (1c) is also provided on both sides of the first support plate (1).

4. The self-adaptive fixing device for a continuous tensioning jack (11) according to claim 1, characterized in that: Slidable second transverse expansion and contraction plates (2a) are also provided on both sides of the second support plate (2), and the second transverse expansion and contraction plates (2a) are connected to the first transverse expansion and contraction plate (1c) via side sliding plates (5).

5. The adaptive fixing device for a continuous tensioning jack (11) according to claim 4, characterized in that: A second support plate front card slot (2b) is provided on one side of the second support plate (2), the second support plate front card slot (2b) is engaged with the first support plate rear card slot (1d), and the first support plate rear card slot (1d) is provided on one side of the first support plate (1).

6. The adaptive fixing device for a continuous tensioning jack (11) according to claim 1, characterized in that: A third transverse expansion plate (3a) is also provided on both sides of the third support plate (3), and the third transverse expansion plate (3a) is connected to the second transverse expansion plate (2a) via a side sliding plate (5).

7. The adaptive fixing device for a continuous tensioning jack (11) according to claim 6, characterized in that: A third support plate front card slot (3h) is provided on one side of the third support plate (3), the third support plate front card slot (3h) is engaged with a second support plate rear card slot (2c), and the second support plate rear card slot (2c) is provided on one side of the second support plate (2).

8. The adaptive fixing device for a continuous tensioning jack (11) according to claim 1, characterized in that: A first-stage telescopic arm (3d) is movably arranged in the third support plate (3), and a second-stage telescopic arm (3f) is movably arranged in the first-stage telescopic arm (3d).

9. The adaptive fixing device for a continuous tensioning jack (11) according to claim 1, characterized in that: The side fixing structure comprises a primary fixer (3c) and a secondary fixer (3e), wherein the primary fixer (3c) is arranged on both sides of the third support plate (3), and the secondary fixer (3e) is arranged on both sides of the primary telescopic arm (3d).

10. The self-adaptive fixing device for a continuous tensioning jack (11) according to claim 1, characterized in that: The multi-directional limiting structure comprises two groups of side limiting plates (7), one end of the side limiting plate (7) is arranged in a front supporting groove (9), the front supporting groove (9) is arranged in a front limiting slider (6), the other end of the side limiting plate (7) is arranged in a rear supporting groove (10), the rear supporting groove (10) is arranged in a rear limiting slider (8), the front limiting slider (6) is slidably arranged in a front limiting slider slide groove (1b), the front limiting slider slide groove (1b) is arranged on the first supporting plate (1), the rear limiting slider (8) is slidably arranged in a rear limiting slider slide groove (3g), and the rear limiting slider slide groove (3g) is arranged on the secondary telescopic arm (3f).

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