An assembled prestressed reinforcement device for highway bridges

Abstract

The present invention discloses a pre-stressed reinforcement device for an assembled highway bridge, belonging to the technical field of highway bridge reinforcement. It includes a first mounting frame arranged in the length direction of the reinforcement component. A sliding table is arranged on the first mounting frame along the length direction. A two-way hydraulic cylinder perpendicular to the width direction of the first mounting frame is arranged on the sliding block of the sliding table. First connecting blocks parallel to the height direction of the first mounting frame are arranged on the output ends of the two-way hydraulic cylinders. A left sliding rod and a right sliding rod are respectively arranged on the first connecting blocks arranged on both sides. One end of the left sliding rod and one end of the right sliding rod are slidably sleeved. Second connecting blocks parallel to the first connecting block are arranged on the other ends of the left sliding rod and the right sliding rod. This technical solution is used to solve the problems that when using the pre-stressed reinforcement device in the prior art for reinforcement operations, the construction efficiency is low, and the bridge or highway will be damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of highway bridge reinforcement, and particularly relates to a prefabricated highway bridge prestressed reinforcement device. Background Art

[0002] With the rapid development of China's transportation scale, about 70% of the concrete bridges in China have entered the overloaded service period, and many bridges have entered the maintenance and reinforcement period. Moreover, a large number of bridges that have been in service for a short time have also shown damage, resulting in a large number of reinforcement and maintenance projects for bridges in China. This phenomenon also exists in the field of prefabricated highways or prefabricated bridge projects.

[0003] Currently, there are two common types of reinforcement methods for prefabricated highways or prefabricated bridges. One is the passive stress method of using bonded steel plates, bonded carbon fiber plates or fiber cloth; the other is the active stress method of using prestress, especially external prestress technology for reinforcement.

[0004] As shown in a prestressed reinforcement device for concrete structures using CFRP cloth with the patent number CN201610963503.8, it discloses a technology of applying prestress to the CFRP cloth and then bonding it to the bridge or highway to be reinforced to improve the bearing capacity of the bridge deck or highway deck. However, in this device or the existing technology, when installing the CFRP cloth, it is necessary to drill holes at designated positions on the bridge deck or highway deck according to the number of CFRP cloths, and install pre-tightening devices and clamping devices with the same number as the CFRP cloths. This will result in a long reinforcement construction period and low construction efficiency, and too many holes drilled on the bridge deck or highway deck will also cause damage to it to a certain extent. Therefore, there is an urgent need to set up a device with high construction efficiency and not easy to damage the bridge or highway. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a prefabricated highway bridge prestressed reinforcement device to solve the problems of low construction efficiency and damage to the bridge or highway during the reinforcement operation when using the prestressed reinforcement device in the existing technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An assembled prestressed reinforcement device for a highway bridge of the present invention includes a first mounting frame arranged in the length direction of a reinforcement component. A sliding table is arranged on the first mounting frame along the length direction. A bidirectional hydraulic cylinder perpendicular to the width direction of the first mounting frame is arranged on the sliding block of the sliding table. First connecting blocks parallel to the height direction of the first mounting frame are arranged on the output ends of the bidirectional hydraulic cylinders. A left sliding rod and a right sliding rod are respectively arranged on the two-sided first connecting blocks. One end of the left sliding rod and one end of the right sliding rod are slidably sleeved. Second connecting blocks parallel to the first connecting block are arranged on the other ends of the left sliding rod and the right sliding rod. A hydraulic push rod is arranged on the second connecting block. A first clamping plate is arranged on the end of the hydraulic push rod. A second clamping plate detachably connected thereto is arranged on the surface of the first clamping plate. The first clamping plate and the second clamping plate are perpendicular to the width direction of the first mounting frame.

[0008] Further, optical rods are symmetrically arranged above the left sliding rod and the right sliding rod. Third connecting blocks are arranged at both ends of the optical rods. The third connecting blocks connect the optical rods to the second connecting blocks. Sliding plates are arranged between both ends of the symmetrically arranged optical rods. A telescopic roller mechanism perpendicular to the sliding plate is arranged on the upper surface of the sliding plate. A return spring is arranged between the two-sided sliding plates. The return spring is sleeved on the optical rod and is in close contact with the sliding plate at both ends. A second mounting frame is further arranged on the sliding block. A mounting plate is arranged at the upper end of the second mounting frame. The mounting plate is located above the first mounting frame. At least one driving motor is arranged on the mounting plate. A first winding wheel and a second winding wheel are arranged on the output end of the driving motor. Pulling ropes with one end fixedly connected thereto are arranged on both the first winding wheel and the second winding wheel. The other ends of the pulling ropes are fixedly connected to the sliding plate.

[0009] Further, the telescopic roller mechanism is arranged between the two-sided first clamping plates and includes an outer sleeve, an inner sliding rod, a sliding block, a telescopic spring, and a pressing roller. The outer sleeve is fixed on the sliding plate. The sliding block is slidably connected inside the outer sleeve. One end of the inner sliding rod is fixedly connected to the sliding block, and the other end is fixedly connected to the pressing roller. The telescopic spring is arranged inside the outer sleeve, and one end of the telescopic spring is fixedly connected to the inner side surface of the outer sleeve at the end connected to the sliding plate, and the other end of the telescopic spring is fixedly connected to the surface of the sliding block.

[0010] Further, a supporting plate for placing the pressing roller is arranged on the first clamping plate. The supporting plate is fixed on the side surface of the first clamping plate.

[0011] Further, a friction layer for increasing friction is arranged on the side surface where the first clamping plate and the second clamping plate contact.

[0012] Further, the first clamping plate and the second clamping plate are connected by bolts.

[0013] Further, both ends of the first mounting bracket are fixed to the reinforcement member by high-strength bolts.

[0014] Further, the reinforcement member is the road surface of an assembled road or the bridge deck of an assembled bridge.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) This prestressed reinforcement device can perform prestressed reinforcement operations on the road surface of a road or the bridge deck of a bridge, improving its load-bearing performance; (2) In this technical solution, the setting of the first mounting bracket, the sliding table, and the double-acting hydraulic cylinder enables the double-acting hydraulic cylinder to move in the width direction of the bridge deck. Furthermore, the setting of the first clamping plate and the second clamping plate enables it to clamp both ends of the carbon fiber cloth. In cooperation with the telescoping of the output end of the double-acting hydraulic cylinder, it is possible to pull the end rope of the carbon fiber cloth to the end in the length direction of the reinforcement member. Therefore, only by moving, the carbon fiber cloth can be laid in the length direction of the bridge deck to reinforce the bridge deck, simplifying the reinforcement process and improving the reinforcement rate (without excessive drilling and installing pre-tightening components and clamping components); (3) The setting of the telescoping roller mechanism can repeatedly roll press the carbon fiber cloth pasted on the reinforcement member, improving the bonding and fixing effect of the carbon fiber cloth on the reinforcement member.

[0017] Other advantages, objectives, and features of the present invention will be described in the subsequent specification, and to some extent, they are obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the objectives, technical solutions, and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0019] Figure 1 Is a three-dimensional schematic diagram of the present invention installed on the upper end of the reinforcement member;

[0020] Figure 2 Is a three-dimensional schematic diagram of another direction of the present invention;

[0021] Figure 3 Is a front view schematic diagram of the present invention;

[0022] Figure 4 Is a left view schematic diagram of the present invention;

[0023] Figure 5 Is a three-dimensional schematic diagram of the present invention after removing the mounting plate;

[0024] Figure 6 Is a three-dimensional schematic diagram of the present invention after removing the first mounting bracket;

[0025] Figure 7 For the present invention Figure 6 is a schematic cross-sectional view of the front view at position A in the present invention.

[0026] The markings in the drawings are as follows:

[0027] Reinforcement member 1, first mounting bracket 2, sliding table 3, sliding block 4, double-acting hydraulic cylinder 5, first connecting block 6, left slide bar 7, right slide bar 8, second connecting block 9, hydraulic push rod 10, first clamping plate 11, second clamping plate 12, carbon fiber cloth material 13, smooth rod 14, sliding plate 15, third connecting block 16, return spring 17, pull rope 18, drive motor 19, first wire winding wheel 20, second wire winding wheel 21, second mounting bracket 22, mounting plate 23, outer sleeve 24, inner slide bar 25, pressure roller 26, support plate 27, telescopic spring 28, slider 29. Detailed implementation manners

[0028] As Figures 1 to 7 shown, an assembled prestressed reinforcement device for a highway bridge of the present invention. It should be noted that the reference object for the up-down relationship direction in this technical solution is the bridge deck or road surface. Since the plate device is installed below the bridge deck or road surface, the direction towards the bridge deck is defined as the upper direction in this technical solution.

[0029] It includes a first mounting bracket 2 arranged along the length direction of the reinforcement member 1. A sliding table 3 is provided on the first mounting bracket 2 along the length direction. A double-acting hydraulic cylinder 5 is provided on the sliding block 4 of the sliding table 3 and is arranged perpendicular to the width direction of the first mounting bracket 2. First connecting blocks 6 are provided on the output ends of the double-acting hydraulic cylinder 5 and are arranged parallel to the height direction of the first mounting bracket 2. The end of the first connecting block 6 is fixed to the output end of the double-acting hydraulic cylinder 5, and the fixing method can adopt connection methods such as welding or flange. A left slide bar 7 and a right slide bar 8 are respectively provided on the two-sided first connecting blocks 6. It should be noted that one of the left slide bar 7 or the right slide bar 8 is a hollow rod, and the other can slide and be connected therein. The ends of the left slide bar 7 and the right slide bar 8 are slidably sleeved. Second connecting blocks 9 are provided at the other ends of the left slide bar 7 and the right slide bar 8 and are arranged parallel to the first connecting block 6. The second connecting block 9 is in an "L" shape in this specific implementation manner. A hydraulic push rod 10 is provided on the horizontal setting end face of the second connecting block 9. A first clamping plate 11 is provided at the end of the hydraulic push rod 10. The middle of the first clamping plate 11 is fixed to the output end of the hydraulic push rod 10. A second clamping plate 12 detachably connected thereto is provided on the surface of the first clamping plate 11. The first clamping plate 11 and the second clamping plate 12 are arranged perpendicular to the width direction of the first mounting bracket 2.

[0030] The working principle of the above technical solution is:

[0031] First, fix both ends of the first mounting bracket 2 in the shape of a "mouth" to the bridge deck in the width direction through high-strength bolts. Then, install a sliding table 3 on its horizontally arranged frame. The sliding table 3 can be an electric sliding table 3 or a hydraulic sliding table 3. Then, fixedly connect a two-way hydraulic cylinder 5 to the sliding block 4 of the sliding table 3. Then, install and connect the subsequent components. When using the carbon fiber cloth material 13 for reinforcement, first clamp both ends of the carbon fiber cloth material 13 between the first clamping plate 11 and the second clamping plate 12. After clamping, start the two-way hydraulic cylinder 5. When the two-way hydraulic cylinder 5 extends, it will drive the carbon fiber cloth material 13 to be stretched, enabling the carbon fiber cloth material 13 to have local prestress in advance. Then, after reaching the designated position, under the downward action of the hydraulic push rod 10, the carbon fiber cloth material 13 is made to fit the bridge deck, thereby achieving bonding. After the bonding is firm, release the first clamping plate 11 and the second clamping plate 12;

[0032] It should be noted that when the two-way hydraulic cylinder 5 moves, it can first retract, fix one end of the carbon fiber cloth material 13 to the first clamping plate 11 and the second clamping plate 12 on one side (during movement, apply glue to the carbon fiber cloth material 13). Then, when it moves close to the designated position, fix the carbon fiber cloth material 13 on the other side, and then stretch the carbon fiber cloth material 13. Of course, a pre-stretch can be carried out once before applying glue to avoid the problem of uneven glue distribution after stretching when directly applying glue.

[0033] The main advantage of this setting is that several carbon fiber cloth materials 13 can be moved for reinforcement in the width direction of the bridge deck through the movement of the sliding table 3. In the traditional method, holes need to be drilled on the bridge deck for each reinforcement, and components for clamping and stretching the ends of the carbon fiber cloth material 13 need to be installed. This method is troublesome to operate, has a long construction period, and the large number of drilling and anchoring operations are also likely to damage the bridge deck.

[0034] Above the left sliding rod 7 and the right sliding rod 8, there are symmetrically arranged optical rods 14. Third connection blocks 16 are provided at both ends of the optical rod 14. The third connection blocks 16 connect the optical rod 14 to the second connection block 9. Between the two ends of the symmetrically arranged optical rods 14, there are sliding plates 15. On the upper surface of the sliding plate 15, there is a telescopic roller mechanism perpendicular to the sliding plate 15. A return spring 17 is provided between the two sliding plates 15 at both ends. The return spring 17 is sleeved on the optical rod 14 and is in close contact with the sliding plate 15 at both ends. On the sliding block 4, there is also a second mounting bracket 22. At the upper end of the second mounting bracket 22, there is a mounting plate 23. The mounting plate 23 is located above the first mounting bracket 2. On the mounting plate 23, there is at least one driving motor 19. At the output end of the driving motor 19, there are a first winding wheel 20 and a second winding wheel 21. One end of a pulling rope 18 is fixedly connected to both the first winding wheel 20 and the second winding wheel 21. The other end of the pulling rope 18 is fixedly connected to the sliding plate 15. The specific structure of the second mounting bracket 22 is a rectangular connecting bracket symmetrically arranged on both sides of the sliding block 4. At the other end of the rectangular connecting bracket, the mounting plate 23 is fixedly connected. It should be noted that the power supply of the driving motor can be supplied by a generator or by the mains supply.

[0035] Under the action of the driving motor 19, the telescopic roller mechanism will move towards the middle of the optical rod 14. During the movement, since the pressure roller 26 contacts the carbon fiber cloth material 13, the bonding part can be pressurized, thereby improving the bonding effect between the two. The function of the return spring 17 is that when the driving motor 19 loses the traction on the pulling rope 18, the deformation reset of the return spring 17 drives the sliding plate 15 back to the initial position. It is not difficult to understand that the part below the first mounting bracket 2 may not be extruded by the pressure roller 26, and this part can be manually pressurized. The pulling rope 18 is preferably a steel wire rope.

[0036] The telescopic roller mechanism is arranged between the two first clamping plates 11 and includes an outer sleeve 24, an inner sliding rod 25, a sliding block 29, a telescopic spring 28 and a pressure roller 26. The outer sleeve 24 is fixed on the sliding plate 15. The sliding block 29 is slidably connected inside the outer sleeve 24. One end of the inner sliding rod 25 is fixedly connected to the sliding block 29, and the other end is fixedly connected to the pressure roller 26. The telescopic spring 28 is arranged inside the outer sleeve 24, and one end of the telescopic spring 28 is fixedly connected to the inner side surface of the outer sleeve 24 at the end connected to the sliding plate 15, and the other end of the telescopic spring 28 is fixed on the surface of the sliding block 29.

[0037] The telescopic roller mechanism is arranged in such a way that under the action of the telescopic spring 28, the pressure roller 26 can always contact and extrude the carbon fiber cloth material 13, further improving the bonding effect.

[0038] A support plate 27 for placing a pressure roller 26 is provided on the first clamping plate 11, and the support plate 27 is fixed on the side of the first clamping plate 11. When the pressure roller 26 is in the initial position, the pressure roller 26 is located on the support plate 27, and the support plate 27 is located below the carbon fiber cloth 13, that is, the pressure roller 26 will not interfere with the movement or gluing operation of the carbon fiber cloth 13. When the slide plate 15 moves, the pressure roller 26 will be separated from the support plate 27, and then extended under the lifting of the telescopic spring 28, and then contact and roll with the carbon fiber cloth 13. When resetting, under the action of the reset spring 17, the pressure roller 26 will move to the support plate 27 after contacting with the support plate 27. It is not difficult to understand that an inclined surface can be set on one end of the support plate 27 facing the pressure roller 26 to facilitate the movement, climbing and resetting of the pressure roller 26.

[0039] A friction layer is provided on the contacting side of the first clamping plate 11 and the second clamping plate 12 to increase the friction force, thereby improving the clamping effect on the carbon fiber cloth 13. Of course, the first clamping plate 11 and the second clamping plate 12 can be detachably connected by bolts, or can be clamped by a clamping cylinder. In the present specific embodiment, any component that can achieve the clamping operation on the carbon fiber cloth 13 can be used.

[0040] It should be noted that components such as the bidirectional hydraulic cylinder 5, the hydraulic push rod 10 and the drive motor 19 are prior arts, and whether they are regarded as hydraulic telescopic components or electric telescopic components, they can be designed and selected according to actual conditions. The terms hydraulic and the like in this embodiment are only for the convenience of understanding and do not limit their types of use. At the same time, the connection method of the above-mentioned components is common knowledge to those skilled in the art and will not be elaborated on here.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An assembled prestressed reinforcement device for a highway bridge, characterized in that: It includes a first mounting bracket arranged in the length direction of the reinforcement member. A slide table arranged in the length direction is provided on the first mounting bracket. A two-way hydraulic cylinder arranged perpendicular to the width direction of the first mounting bracket is provided on the sliding block of the slide table. First connecting blocks arranged parallel to the height direction of the first mounting bracket are respectively provided on the output ends of the two-way hydraulic cylinder. A left slide rod and a right slide rod are respectively provided on the two first connecting blocks arranged on both sides. One end of the left slide rod and one end of the right slide rod are slidably sleeved. Second connecting blocks arranged parallel to the first connecting block are respectively provided on the other ends of the left slide rod and the right slide rod. A hydraulic push rod is provided on the second connecting block. A first clamping plate is provided on the end of the hydraulic push rod. A second clamping plate detachably connected thereto is provided on the surface of the first clamping plate. The first clamping plate and the second clamping plate are arranged perpendicular to the width direction of the first mounting bracket; Optical rods are symmetrically arranged above the left slide rod and the right slide rod. Third connecting blocks are provided at both ends of the optical rod. The third connecting blocks connect the optical rod to the second connecting block. A slide plate is arranged between both ends of the symmetrically arranged optical rods. A telescopic roller mechanism perpendicular to the slide plate is provided on the upper surface of the slide plate. A return spring is arranged between the two slide plates arranged at both ends. The return spring is sleeved on the optical rod and is in close contact with the slide plate at both ends. A second mounting bracket is further provided on the sliding block. A mounting plate is provided at the upper end of the second mounting bracket. The mounting plate is located above the first mounting bracket. At least one driving motor is provided on the mounting plate. A first wire winding wheel and a second wire winding wheel are provided on the output end of the driving motor. Pulling ropes with one end fixedly connected thereto are respectively provided on the first wire winding wheel and the second wire winding wheel. The other end of the pulling rope is fixedly connected to the slide plate.

2. The pre-stressed reinforcement device for an assembled highway bridge according to claim 1, characterized in that: The telescopic roller mechanism is arranged between the two first clamping plates on both sides and includes an outer sleeve, an inner slide rod, a slider, a telescopic spring and a pressing roller. The outer sleeve is fixed on the slide plate. The slider is slidably connected in the outer sleeve. One end of the inner slide rod is fixedly connected to the slider, and the other end is fixedly connected to the pressing roller. The telescopic spring is arranged in the outer sleeve, and one end of the telescopic spring is fixedly connected to the inner side surface of the outer sleeve at the end connected to the slide plate, and the other end of the telescopic spring is fixed on the surface of the slider.

3. The pre-stressed reinforcement device for an assembled highway bridge according to claim 2, characterized in that: A support plate for placing the pressing roller is provided on the first clamping plate. The support plate is fixed on the side surface of the first clamping plate.

4. The pre-stressed reinforcement device for an assembled highway bridge according to claim 1, wherein: A friction layer for increasing friction is provided on the side surface where the first clamping plate and the second clamping plate are in contact.

5. The pre-stressed reinforcement device for an assembled highway bridge according to claim 1, characterized in that: The first clamping plate and the second clamping plate are connected by bolts.

6. The pre-stressed reinforcement device for an assembled highway bridge according to claim 1, characterized in that: Both ends of the first mounting bracket are fixed on the reinforcement member by high-strength bolts.

7. A pre-stressed reinforcement device for an assembled highway bridge according to claim 1, characterized in that: The reinforcement member is the road surface of an assembled highway or the bridge deck of an assembled bridge.

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