Continuous beam trolley pre-pressing device

Abstract

This invention discloses a preloading device for a continuous beam hanging basket, belonging to the field of bridge construction technology. Preloading testing is performed using jacks. Two parallel angled supports form a support structure, with two jacks perpendicular to each other mounted on the angled supports. By moving sliding seats and translating beams, the jacks can be moved to any position on the plane. A wedge-shaped seat at the top of the jack has the same inclination as the surface to be preloaded. While ensuring the jacks are vertically positioned, the wedge-shaped seat fits snugly against the surface to be preloaded. The wedge-shaped blocks are manufactured according to the inclination of the surface to be preloaded. The overall preloading device has a certain degree of adaptability. This preloading device can perform preloading tests on the supporting inclined surface of a continuous beam hanging basket, replacing sandbags and other heavy objects for direct pressure application, greatly reducing the difficulty of the preloading test process. Compared to the method of stacking heavy objects, the installation and unloading of this device are more convenient. Furthermore, the planar movement of the jacks allows for preloading tests at any position on the supporting inclined surface, obtaining more comprehensive stress data for the supporting inclined surface, providing more reference data for subsequent continuous beam construction.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction technology, specifically relating to a continuous beam hanging basket preloading device. Background Technology

[0002] During the construction of the continuous beam, the continuous beam is poured after the piers are pre-cast. First, beam No. 0 is pre-cast at the top of the piers. Then, a hanging basket-type cantilever structure is built at both ends of beam No. 0 to carry out the cantilever pouring of beam No. 1 in stages. Before the cantilever pouring, the inclined bottom plate that is installed on the extended side of the continuous beam and is responsible for supporting the overall concrete cantilever pouring needs to be pre-stressed to test the ultimate bearing capacity of the inclined support surface. This is to avoid the failure of the inclined support surface to bear the load during the cantilever pouring process, which would lead to the failure of the entire continuous beam construction.

[0003] During on-site construction, it is common practice to install molds directly on the supporting slope after fixing the hanging basket and the supporting slope, and add sandbags or heavy objects inside the molds. By continuously increasing the weight, the load-bearing capacity of the entire hanging basket structure is observed. This pre-compression method is very time-consuming, occupies a lot of space, and is not easy to install and unload quickly. During the pre-compression process, the weight is not easy to control. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a continuous beam hanging basket preloading device that directly applies pressure to the supporting inclined surface through jacks, replacing sandbag pressure and improving preloading efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention includes two sets of angled supports fixed side by side on the extended side of a continuous beam. The angled supports include a horizontally arranged support beam and an inclined support beam that is obliquely supported between the end of the support beam and the wall. The present invention also includes a translation beam, the two ends of which are slidably mounted on the two support beams respectively. A sliding seat is slidably mounted on the translation beam. A downwardly extending jack is fixed under the sliding seat. The output end of the jack is provided with a wedge-shaped seat. The slope of the bottom surface of the wedge-shaped seat is the same as the slope of the surface to be preloaded.

[0007] Furthermore, the translation beam includes a load-bearing beam and a support beam. The load-bearing beam is located below the support beam, and the two ends of the load-bearing beam are connected by connecting columns. The support beam is located between the load-bearing beam and the support beam. When not preloaded, the two ends of the support beam rest on the two support beams, and there is a gap between the support beam and the load-bearing beam. The sliding seat includes a load-bearing seat and a support seat. The support seat is fixed on the upper side of the load-bearing seat, and a sliding hole is opened on the support seat. The load-bearing beam passes through the sliding hole. When not preloaded, the support seat rests on the load-bearing beam, and there is a gap between the load-bearing beam and the load-bearing seat. When preloaded, the load-bearing seat abuts against the load-bearing beam, and the two ends of the load-bearing beam abut against the two support beams.

[0008] Furthermore, rollers are provided on the contact surfaces of the load-bearing beam and the supporting crossbeam, and rollers are also provided on the contact surfaces of the load-bearing seat and the load-bearing beam.

[0009] Furthermore, the support base is equipped with a motor, which drives the rollers on the support base to rotate; it also includes a guide rail, which is located above the middle of the two support beams and is parallel to the support beams. A traction trolley moves on the guide rail, and a support wheel is rotatably mounted at each end of the guide rail. Traction ropes extend from the front and rear sides of the traction trolley, and the traction ropes pass around the support wheels and connect to the front and rear sides of the middle of the support beam.

[0010] Furthermore, a sliding shaft is slidably mounted on one side of the traction trolley, and a spring is provided between the sliding shaft and the interior of the traction trolley. The spring supports the sliding shaft to move within the traction trolley, and the sliding shaft is connected to the traction rope.

[0011] The beneficial effects of this invention are as follows:

[0012] This invention utilizes jacks for pre-compression testing. Two parallel angled supports form a base, on which two jacks are positioned perpendicularly. By moving sliding seats and a translation beam, the jacks can be moved to any position on the plane. A wedge-shaped seat at the top of each jack has the same inclination as the surface to be pre-compressed. While ensuring the jacks are vertically positioned, the wedge-shaped seat fits snugly against the surface. The wedge-shaped blocks are manufactured according to the inclination of the surface. The overall pre-compression device has a certain degree of adaptability. This device can perform pre-compression testing on the inclined support surface of a continuous beam formwork, replacing sandbags and other heavy objects for direct pressure application, greatly reducing the difficulty of the pre-compression testing process. Compared to stacking heavy objects, this device is easier to install and remove. Furthermore, the planar movement of the jacks allows for pre-compression testing at any position on the inclined support surface, obtaining more comprehensive stress data and providing more reference data for subsequent continuous beam construction.

[0013] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0014] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0015] Figure 1 This is a diagram showing the installation location of the pre-compression device in an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the pre-compression device structure according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram showing the details of the sliding seat in an embodiment of the present invention;

[0018] Figure 4 This is a sectional view of the end of the translation beam according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the internal structure of the traction trolley according to an embodiment of the present invention;

[0020] The following are the markings in the attached diagram: 1. Angle bracket; 11. Support beam; 12. Supporting diagonal beam; 2. Translation beam; 21. Load-bearing beam; 22. Bearing beam; 3. Sliding seat; 31. Load-bearing seat; 32. Bearing seat; 321. Sliding hole; 322. Motor; 4. Jack; 5. Wedge seat; 6. Roller; 7. Guide rail; 71. Support wheel; 8. Traction trolley; 81. Traction rope; 82. Sliding shaft; 83. Spring. Detailed Implementation

[0021] like Figures 1-5 As shown, this invention discloses a continuous beam hanging basket preloading device, such as... Figure 1 and Figure 2 As shown, the structure includes two sets of angled supports fixed side-by-side to the extended side of a continuous beam. Each angled support includes a horizontally positioned support beam and an inclined support beam diagonally supported between the end of the support beam and the wall surface. The contact ends of the support beam and the inclined support beam are welded together. The support beam and the inclined support beam are connected to the extended side of the continuous beam via through-hole plug welding of reinforcing bars. Figure 2 It also includes a translation beam, with its two ends slidably mounted on the two supporting crossbeams. A sliding seat is slidably mounted on the translation beam, and a downwardly extending jack is fixed to the lower side of the sliding seat. The output end of the jack is provided with a wedge-shaped seat, and the slope of the bottom surface of the wedge-shaped seat is the same as the slope of the surface to be preloaded.

[0022] This preloading device uses jacks for preloading testing. It is supported by two parallel angled supports, on which two perpendicular jacks are mounted. By moving the sliding seat and the translation beam, the jacks can be moved to any position on the plane. The wedge-shaped seat at the top of the jack has the same slope as the surface to be preloaded. While ensuring the jacks are vertically positioned, the wedge-shaped seat fits snugly against the surface. The wedge-shaped blocks are manufactured according to the slope of the surface. The overall preloading device has a certain degree of adaptability and can handle continuous... Pre-compression testing on the inclined support surface of the beam hanging basket can replace direct pressure application with heavy objects such as sandbags, greatly reducing the difficulty of the pre-compression testing process. Compared with the method of stacking heavy objects, the installation of this device is more convenient for loading and unloading. Furthermore, through the planar moving jacks, pre-compression testing can be carried out at any position on the inclined support surface to obtain more comprehensive stress data on the inclined support surface, providing more reference data for the subsequent construction of continuous beams. In addition, more than three sliding seats can be set on the translation beam, that is, multiple jack structures can be set up to carry out a one-time full-surface pre-compression test.

[0023] In further proposals, such as Figure 2 As shown, the translation beam includes a load-bearing beam and a support beam. The load-bearing beam is located below the support beam, and the two ends of the load-bearing beam are connected by connecting columns. The support beam is located between the load-bearing beam and the support beam. Figure 4 The contact surface between the load-bearing beam and the supporting crossbeam is equipped with rollers. Without pre-loading, both ends of the load-bearing beam rest on the two supporting crossbeams, with a gap between the supporting crossbeams and the load-bearing beam. The load-bearing beam moves more smoothly on the supporting crossbeams thanks to the rollers. The sliding seat includes a load-bearing seat and a load-bearing seat. The load-bearing seat is fixed to the upper side of the load-bearing seat, and a sliding hole is formed on the load-bearing seat. The load-bearing beam passes through the sliding hole. Figure 3 The contact surface between the bearing seat and the force beam is provided with rollers. When not preloaded, the bearing seat is placed on the force beam, and there is a gap between the force beam and the bearing seat. The bearing seat is supported on the force beam by the rollers, making the movement smoother. When preloaded, the force seat abuts against the force beam, and both ends of the force beam abut against the two supporting crossbeams.

[0024] In this structure, the supporting translation beam is divided into upper and lower distributed load-bearing beams and bearing beams, and the sliding seat is divided into upper and lower distributed bearing seats and load-bearing seats. Before preloading, the jack is suspended, the bearing beam is placed on the supporting crossbeam, and the bearing seat is placed on the load-bearing beam. At this time, the jack can be moved in two vertical directions simultaneously by moving the jack directly. During preloading, the jack does work, the wedge-shaped seat at the lower end of the jack supports the surface to be preloaded, and the upper end supports upward, causing the jack to lift the load-bearing seat. The load-bearing seat contacts the load-bearing beam, and the load-bearing beam continues to be lifted, contacting the supporting crossbeam. An I-shaped support frame structure is formed at the upper end of the jack. The load-bearing beam and the load-bearing seat are used for force support during preloading, forming good support. This structure separates the load-bearing and sliding bearing non-structural components, and the contact of each component is controlled by the force applied by the jack, which can ensure that there is a load during movement and a force during preloading, ensuring the integrity of the load-bearing structure.

[0025] In further proposals, such as Figure 3 The support base is equipped with a motor, which drives the rollers mounted on the support base to rotate; Reference Figure 2 It also includes a guide rail, which is located above the middle of the two supporting beams and is parallel to the supporting beams. A traction trolley moves on the guide rail, and a support wheel is rotatably mounted at each end of the guide rail. Traction ropes extend from the front and rear sides of the traction trolley and pass around the support wheels and connect to the front and rear sides of the middle of the load-bearing beam.

[0026] In this structure, a motor drives the rollers located on the support seat to rotate, thereby controlling the movement of the sliding seat on the translation beam. The traction trolley moves on the guide rail, causing the traction rope to move the support beam horizontally. This structure, with its electric drive, allows for remote control of the preload structure. Furthermore, the structure is simple. The traction trolley pulls the traction rope, which, supported by the support wheels at both ends of the guide rail, moves with the traction trolley, thus moving the entire translation beam. The traction method of the traction rope allows the support beam to have a certain vertical displacement while being horizontally tractioned, ensuring that the jack can be tractioned during the movement phase. Moreover, during the hydraulic phase, when switching the force position, the traction structure remains unaffected.

[0027] In further proposals, such as Figure 5 As shown, a sliding shaft is slidably provided on one side of the front and rear of the traction trolley. A spring is provided between the sliding shaft and the interior of the traction trolley. The spring supports the sliding shaft to move into the traction trolley. The sliding shaft is connected to the traction rope.

[0028] In this structure, by setting up a sliding shaft with elastic movement, the traction rope has a larger tension and contraction space. It elastically yields during preloading and ensures that the traction rope is taut when not preloaded, so as to provide smoother translation beam movement.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended 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 to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A continuous beam hanging basket preloading device, characterized in that: The system includes two sets of angled supports fixed side-by-side on the extended side of a continuous beam. Each angled support comprises a horizontally positioned support beam and an inclined support beam supported diagonally between the end of the support beam and the wall. It also includes a translation beam, with its two ends slidably mounted on the two support beams. A sliding seat is slidably mounted on the translation beam, and a downwardly extending jack is fixed to the underside of the sliding seat. The output end of the jack has a wedge-shaped seat, the slope of which is the same as the slope of the surface to be preloaded. The translation beam includes a load-bearing beam and a support beam. The load-bearing beam is located below the support beam, and the two ends of the load-bearing beam are connected by connecting columns. The support beam is located between the load-bearing beam and the support beam. Without preloading, the two ends of the support beam rest on the two support beams, with a gap between the support beam and the load-bearing beam. The sliding seat includes a load-bearing seat and a support seat. The support seat is fixed... The bearing seat is fixed on the upper side of the force-bearing seat. A sliding hole is opened on the bearing seat, and the force-bearing beam passes through the sliding hole. When not pre-pressed, the bearing seat is placed on the force-bearing beam, and there is a gap between the force-bearing beam and the bearing seat. When pre-pressed, the bearing seat and the force-bearing beam abut against each other, and the two ends of the force-bearing beam abut against the two supporting crossbeams. Rollers are provided on the contact surfaces of the bearing beam and the supporting crossbeams, and rollers are provided on the contact surfaces of the bearing seat and the force-bearing beam. A motor is provided on the bearing seat, and the motor drives the rollers on the bearing seat to rotate. It also includes a guide rail, which is located above the middle of the two supporting crossbeams. The guide rail is parallel to the supporting crossbeams. A traction trolley moves on the guide rail, and a support wheel is rotated at each end of the guide rail. Traction ropes extend from the front and rear sides of the traction trolley, and the traction ropes pass around the support wheels and connect to the front and rear sides of the middle of the bearing beam.

2. The continuous beam hanging basket preloading device according to claim 1, characterized in that: A sliding shaft is slidably provided on one side of the traction trolley, and a spring is provided between the sliding shaft and the interior of the traction trolley. The spring supports the sliding shaft to move into the traction trolley, and the sliding shaft is connected to the traction rope.

Images