A telescopic anchoring device for bridge bearings

Abstract

This invention discloses a telescopic anchoring device for bridge bearings, comprising a fixed base, an outer sleeve fixedly connected to the fixed base, a groove formed on the inner side wall of the outer sleeve, an adjusting sleeve inside the outer sleeve, a protrusion fixedly connected to the outer side wall of the adjusting sleeve, the protrusion being slidably connected to the groove, and a fixing block fixedly connected to the inner side wall of the adjusting sleeve. In this invention, by changing the volume of hydraulic oil in the corresponding bearing cavity and the connecting cavity, relative sliding occurs between the piston rod and the piston cylinder, causing a change in the height position of the through groove. This, in turn, causes relative sliding between the connecting rod and the through groove, and further, relative sliding occurs between the contact blocks on both sides of the connecting rod and the fixing blocks, thus changing the height position of the adjusting sleeve. Therefore, after adding an adjusting shim between the top plate and the bottom plate, the thread engagement length between the anchor bolt and the outer sleeve or the adjusting sleeve does not shorten, ensuring the anchoring performance between the bearing and the beam.

Description

Technical Field

[0001] This invention relates to the field of bridge bearing anchorage technology, and in particular to a telescopic anchorage device for bridge bearings. Background Technology

[0002] During bridge service, uneven settlement at bridge supports can alter the elevation of different parts of the beam, changing the stress distribution and affecting structural stability. Currently, the mainstream method is to adjust the bridge bearings, with shim plate adjustment being the simplest method. The basic idea is to lift the bridge to unload the bearings, then loosen the bolts, continue lifting the bridge to a certain position, insert a shim plate between the upper bearing plate and the bridge base plate (embedded steel plate), and then tighten the bolts. However, this process presents some problems: the anchor bolts need to be loosened before the bearing can be inserted, and the thread engagement length between the anchor bolt and the sleeve shortens as the shim plate is inserted, affecting the anchoring performance between the bearing and the beam. Summary of the Invention

[0003] The purpose of this invention is to provide a telescopic anchoring device for bridge bearings in order to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A telescopic anchoring device for a bridge bearing includes a fixed base, an outer sleeve fixedly connected to the fixed base, a groove formed on the inner wall of the outer sleeve, an adjusting sleeve inside the outer sleeve, a protrusion fixedly connected to the outer wall of the adjusting sleeve, the protrusion being slidably connected to the groove, a fixing block fixedly connected to the inner wall of the adjusting sleeve, a piston cylinder fixedly connected to the upper end of the fixed base inside the adjusting sleeve, a piston rod cooperating with the piston cylinder inside the piston cylinder, the upper end of the piston rod extending above the piston cylinder, a through groove formed on the piston rod extending above the piston cylinder, a connecting rod slidably connected inside the through groove. The piston rod has two ends that extend to the outside of the through groove and are respectively fixedly connected to contact blocks. There are two fixing blocks, which are respectively set on both sides of the piston rod. The contact blocks and fixing blocks are respectively provided with matching inclined surfaces. The piston cylinder has a cavity inside. The fixing seat has a communicating cavity inside that communicates with the cavity. The communicating cavity extends to the outer wall of the fixing seat. An elastic component is provided between the upper end face of the piston rod and the inner top surface wall of the height adjustment sleeve. The outer sleeve and the outer side of the height adjustment sleeve are provided with a top plate, a height adjustment pad, and a bottom plate from top to bottom. The lower end of the bottom plate abuts against the upper end of the fixing seat.

[0006] Preferably, the elastic component includes a first locking block, a second locking block, and a spring. The first locking block is fixedly connected to the upper end face of the piston rod, and the second locking block is fixedly connected to the inner top surface wall of the height adjustment sleeve. A spring is provided on the outer side of the first and second locking blocks, and the two ends of the spring are fixedly connected to the upper end face of the piston rod and the inner top surface wall of the height adjustment sleeve, respectively.

[0007] Preferably, the cavity and the communicating cavity are filled with hydraulic oil.

[0008] Preferably, the fixed base is provided with a control valve that cooperates with the communicating cavity.

[0009] Preferably, both the connecting rod and the through groove are inclined, and the inclination angles of the connecting rod and the through groove are the same.

[0010] Preferably, the contact block and the fixing block located on the same side of the piston rod cooperate with each other, the inclined surfaces of the two fixing blocks are arranged parallel to each other, and the inclined surfaces of the two contact blocks are arranged parallel to each other.

[0011] Preferably, the two fixed blocks are at the same horizontal height, and the two contact blocks are at the same horizontal height.

[0012] Preferably, the grooves and protrusions are both arranged in the vertical direction, and there are multiple grooves and protrusions. The multiple grooves and protrusions are distributed in a ring at equal intervals about the axis of the height adjustment sleeve. The number of grooves and protrusions is the same and they correspond one-to-one.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] This application, by incorporating height-adjusting sleeves and height-adjusting pads, addresses uneven settlement at bridge supports. By altering the volume of hydraulic oil within the corresponding support cavities and connecting cavities, relative sliding occurs between the piston rod and piston cylinder, changing the height of the through groove. This, in turn, causes relative sliding between the connecting rod and the through groove. Consequently, relative sliding occurs between the contact blocks and fixing blocks on both sides of the connecting rod, further altering the height of the height-adjusting sleeve. Therefore, even after adding height-adjusting pads between the top and bottom plates, the thread engagement length between the anchor bolts and the outer sleeve or height-adjusting sleeve does not shorten, ensuring the anchoring performance between the support and the beam. Attached Figure Description

[0015] Figure 1 A cross-sectional view of the internal structure of the anchoring device provided according to an embodiment of the present invention is shown;

[0016] Figure 2 A cross-sectional view of the internal structure of the height adjustment sleeve provided according to an embodiment of the present invention is shown;

[0017] Figure 3A schematic diagram of the first state of the anchoring device provided according to an embodiment of the present invention is shown;

[0018] Figure 4 A schematic diagram of the second state of the anchoring device provided according to an embodiment of the present invention is shown.

[0019] Legend:

[0020] 1. Fixed seat; 2. Outer sleeve; 3. Slide groove; 4. Height adjustment sleeve; 5. Protrusion; 6. Fixed block; 7. Piston cylinder; 8. Contact block; 9. Connecting rod; 10. Piston rod; 11. Through groove; 12. First locking block; 13. Second locking block; 14. Spring; 15. Cavity; 16. Control valve; 17. Base plate; 18. Top plate; 19. Height adjustment pad. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-4 The present invention provides a technical solution:

[0023] A telescopic anchoring device for bridge bearings includes a fixed base 1, an outer sleeve 2 fixedly connected to the fixed base 1, a groove 3 formed on the inner side wall of the outer sleeve 2, an adjusting sleeve 4 inside the outer sleeve 2, a protrusion 5 fixedly connected to the outer side wall of the adjusting sleeve 4, the protrusion 5 being slidably connected to the groove 3, a fixing block 6 fixedly connected to the inner side wall of the adjusting sleeve 4, a piston cylinder 7 fixedly connected to the upper end of the fixed base 1 inside the adjusting sleeve 4, a piston rod 10 cooperating with the piston cylinder 7 inside the piston cylinder 7, the upper end of the piston rod 10 extending above the piston cylinder 7, a through groove 11 formed on the piston rod 10 extending above the piston cylinder 7, a connecting rod 9 slidably connected inside the through groove 11. Both ends of the connecting rod 9 extend to the outside of the through groove 11 and are respectively fixedly connected to contact blocks 8. There are two fixing blocks 6, which are respectively set on both sides of the piston rod 10. The contact blocks 8 and the fixing blocks 6 are respectively provided with matching inclined surfaces. The piston cylinder 7 has a cavity 15 inside. The fixing seat 1 has a communicating cavity connected to the cavity 15 inside. The communicating cavity extends to the outer wall of the fixing seat 1. An elastic component is provided between the upper end face of the piston rod 10 and the inner top surface wall of the height adjustment sleeve 4. The outer sleeve 2 and the outer side of the height adjustment sleeve 4 are provided with a top plate 18, a height adjustment pad 19 and a bottom plate 17 from top to bottom. The lower end of the bottom plate 17 abuts against the upper end of the fixing seat 1. This application utilizes an adjusting sleeve 4 and an adjusting pad 19. After uneven settlement occurs at each bridge support, the hydraulic oil inside the cavity 15 and connecting cavity is injected or released via a control valve 16. This changes the volume of hydraulic oil in the corresponding support cavity 15 and connecting cavity, causing relative sliding between the piston rod 10 and piston cylinder 7. This results in a change in the height of the through groove 11, causing relative sliding between the connecting rod 9 and the through groove 11. This, in turn, causes a change in the height of the through groove 11, which in turn causes relative sliding between the connecting rod 9 and the contact blocks 8 on both sides of the connecting rod 9 and the fixing blocks 6. The relative sliding causes the height position of the adjusting sleeve 4 to change, so that after the adjusting shim 19 is added between the top plate 18 and the bottom plate 17, the thread engagement length between the anchor bolt and the outer sleeve 2 or the adjusting sleeve 4 will not become shorter. At the same time, the height can be adjusted according to actual needs, so that the adjusting sleeve 4 is neither too long nor too short. This ensures that after the adjusting shim 19 is added between the top plate 18 and the bottom plate 17, the thread engagement length between the anchor bolt and the outer sleeve 2 or the adjusting sleeve 4 will not become shorter, thus ensuring the anchorage performance between the support and the beam.

[0024] Specifically, such as Figure 1 and Figure 2As shown, the elastic component includes a first locking block 12, a second locking block 13, and a spring 14. The first locking block 12 is fixedly connected to the upper end face of the piston rod 10, and the second locking block 13 is fixedly connected to the inner top surface wall of the height adjustment sleeve 4. A spring 14 is provided on the outer side of the first locking block 12 and the second locking block 13, with both ends of the spring 14 fixedly connected to the upper end face of the piston rod 10 and the inner top surface wall of the height adjustment sleeve 4, respectively. The elastic component is designed to assist and coordinate with the change in the height position of the height adjustment sleeve 4 caused by the relative sliding between the contact block 8 and the fixed block 6. Since the bridge bearing is located outdoors for extended periods, the relative sliding between the height adjustment sleeve 4 and the outer sleeve 2 may generate resistance due to natural factors. The spring 14 allows the piston rod 10 to directly transmit a portion of the thrust to the height adjustment sleeve 4 during its ascent, preventing the height adjustment sleeve 4 from getting stuck.

[0025] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the cavity 15 and the connecting cavity are filled with hydraulic oil. The fixed base 1 is equipped with a control valve 16 that cooperates with the connecting cavity. By changing the volume of hydraulic oil, the height of the adjusting sleeve 4 can be infinitely adjusted, making this device suitable for various settlement heights. Furthermore, the height can be adjusted according to actual needs, ensuring that the adjusting sleeve 4 is neither too long nor too short, thereby improving the applicability and effectiveness of the device.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, both the connecting rod 9 and the through groove 11 are inclined, and their inclination angles are the same. The contact block 8 and the fixing block 6, located on the same side of the piston rod 10, cooperate with each other. The inclined surfaces of the two fixing blocks 6 and the two contact blocks 8 are parallel to each other. The horizontal heights of the two fixing blocks 6 and the two contact blocks 8 are the same. The arrangement of the two fixing blocks 6 and the two contact blocks 8 improves the stability of the piston rod 10 and the height adjustment sleeve 4 during movement.

[0027] Specifically, such as Figure 1 and Figure 2 As shown, both the slide groove 3 and the protrusion 5 are arranged vertically, and there are multiple slide grooves 3 and protrusions 5. The multiple slide grooves 3 and protrusions 5 are distributed in a ring at equal intervals about the axis of the height adjustment sleeve 4. The number of slide grooves 3 and protrusions 5 are the same and they correspond one-to-one. The arrangement of multiple slide grooves 3 and protrusions 5 further improves the stability of the height adjustment sleeve 4 during movement and use after adjustment.

[0028] In summary, the telescopic anchoring device for bridge bearings provided in this embodiment, when uneven settlement occurs at each bridge support, uses the control valve 16 to fill or release the hydraulic oil inside the cavity 15 and the connecting cavity, changing the volume of hydraulic oil inside the corresponding support cavity 15 and the connecting cavity. This causes relative sliding between the piston rod 10 and the piston cylinder 7, resulting in a change in the height position of the through groove 11. Consequently, relative sliding occurs between the connecting rod 9 and the through groove 11, and then relative sliding occurs between the contact blocks 8 on both sides of the connecting rod 9 and the fixing blocks 6, changing the height position of the adjusting sleeve 4. This ensures that after adding the adjusting shim 19 between the top plate 18 and the bottom plate 17, the thread engagement length between the anchor bolt and the outer sleeve 2 or the adjusting sleeve 4 will not shorten. At the same time, the height can be adjusted according to actual needs, ensuring that the adjusting sleeve 4 is neither too long nor too short.

[0029] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A telescopic anchoring device for bridge bearings, comprising a fixed base (1), characterized in that, An outer sleeve (2) is fixedly connected to the fixed base (1). A groove (3) is provided on the inner side wall of the outer sleeve (2). An adjusting sleeve (4) is provided inside the outer sleeve (2). A protrusion (5) is fixedly connected to the outer side wall of the adjusting sleeve (4). The protrusion (5) is slidably connected to the groove (3). A fixing block (6) is fixedly connected to the inner side wall of the adjusting sleeve (4). A piston cylinder (7) is fixedly connected to the upper end of the fixed base (1) inside the adjusting sleeve (4). A piston rod (10) is provided inside the piston cylinder (7) and cooperates with it. The upper end of the piston rod (10) extends to the top of the piston cylinder (7). A through groove (11) is provided on the piston rod (10) extending to the top of the piston cylinder (7). A connecting rod (9) is slidably connected inside the through groove (11). Both ends extend to the outside of the through groove (11) and are respectively fixedly connected to contact blocks (8). There are two fixed blocks (6), and the two fixed blocks (6) are respectively set on both sides of the piston rod (10). The contact blocks (8) and the fixed blocks (6) are respectively provided with matching inclined surfaces. The piston cylinder (7) has a cavity (15) inside. The fixed seat (1) has a communicating cavity connected to the cavity (15) inside. The communicating cavity extends to the outer wall of the fixed seat (1). An elastic component is provided between the upper end face of the piston rod (10) and the inner top surface wall of the height adjustment sleeve (4). The outer sleeve (2) and the outer side of the height adjustment sleeve (4) are provided with a top plate (18), a height adjustment pad (19) and a bottom plate (17) from top to bottom. The lower end of the bottom plate (17) abuts against the upper end of the fixed seat (1). The elastic component includes a first locking block (12), a second locking block (13), and a spring (14). The first locking block (12) is fixedly connected to the upper end face of the piston rod (10), and the second locking block (13) is fixedly connected to the inner top surface wall of the height adjustment sleeve (4). The first locking block (12) and the second locking block (13) are provided with a spring (14) on their outer sides. The two ends of the spring (14) are fixedly connected to the upper end face of the piston rod (10) and the inner top surface wall of the height adjustment sleeve (4), respectively. The connecting rod (9) and the through groove (11) are both inclined, and the inclination angles of the connecting rod (9) and the through groove (11) are the same; The contact block (8) and the fixing block (6) located on the same side of the piston rod (10) cooperate with each other. The inclined surfaces of the two fixing blocks (6) are set parallel to each other, and the inclined surfaces of the two contact blocks (8) are set parallel to each other. The two fixed blocks (6) are at the same horizontal height, and the two contact blocks (8) are at the same horizontal height.

2. The telescopic anchoring device for a bridge bearing according to claim 1, characterized in that, The cavity (15) and the connecting cavity are filled with hydraulic oil.

3. The telescopic anchoring device for a bridge bearing according to claim 2, characterized in that, The fixed base (1) is provided with a control valve (16) that cooperates with the connecting cavity.

4. The telescopic anchoring device for a bridge bearing according to claim 1, characterized in that, Both the groove (3) and the protrusion (5) are arranged in the vertical direction. There are multiple grooves (3) and protrusions (5). The multiple grooves (3) and protrusions (5) are distributed in a ring at equal intervals about the axis of the height adjustment sleeve (4). The number of grooves (3) and protrusions (5) is the same and they correspond one to one.

Images