Anchoring device for bridge expansion joint

Abstract

The utility model discloses an anchoring device for a bridge expansion joint, which comprises a main body unit and an anchoring unit, the main body unit comprises expansion joint profile steel, a plurality of positioning plates are fixed at the bottom of the expansion joint profile steel at equal intervals, round holes are formed in the positioning plates, the anchoring unit comprises a pre-embedded plate, a plurality of L-shaped steel bars are fixed at the top of the pre-embedded plate, the expansion joint profile steel can be placed on the L-shaped steel bars, and the L-shaped steel bars are fixed on the pre-embedded plate. S-shaped steel bars are fixed to the ends, away from the embedded plate, of the L-shaped steel bars, connecting bars are slidably connected into the circular holes, and straight steel bars are fixed to one ends of the connecting bars. The straight steel bar is moved to the concave position of the S-shaped steel bar, the connecting bar penetrates through the circular hole, then the nut is in threaded connection with the internal thread on the connecting bar, the nut abuts against the positioning plate, at the moment, the straight steel bar abuts against the S-shaped steel bar, and the expansion joint profile steel and the L-shaped steel bar are fixed together through the straight steel bar and the connecting bar. Compared with an existing fixing mode, the expansion joint profile steel mounting method is more convenient and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of anchoring devices, in particular to an anchoring device for a bridge expansion joint. Background Art

[0002] A bridge expansion joint is the gap between two piers, allowing the bridge to expand and contract freely in different seasons and temperatures. Anchors, on the other hand, are the components that secure the two sections of the expansion joint, allowing the bridge structure to withstand traffic loads and environmental changes.

[0003] There are many types of existing anchoring devices, and the rib plate type is one of them. The specific structure is as follows: Figure 1 As shown, the U-shaped steel bar 1 is pre-embedded first, and then the long steel bar 2 is passed through the U-shaped steel bar 1, and the long steel bar 2 and the U-shaped steel bar 1 are welded, and then the expansion joint steel 4 is placed on the U-shaped steel bar 1, and then the U-shaped installation rib 3 is passed through the long steel bar 2 horizontally, so that the long steel bar 2 is located in the U-shaped installation rib 3, and then the U-shaped installation rib 3 and the expansion joint steel 4 are fixed with bolts and nuts. This method has the following problems: first, after the long steel bar 2 is passed through the U-shaped steel bar 1, when the two are welded, there are many welding points and the fixing time is long. Moreover, when welding, the long steel bar 2 needs to be fixed from the U-shaped steel bar 1 with fine steel wire before the two can be welded. When fixing with fine steel wire, the labor workload is further increased, which affects the construction efficiency. In addition, after fixing with bolts and nuts, the expansion joint steel 4 is driven to move and vibrate due to the vibration of the bridge, which easily causes the bolts and nuts to loosen and the stability is poor. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the problems of the above-mentioned anchoring device for bridge expansion joints, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide an anchoring device for a bridge expansion joint, which is used to solve the problem that after the long steel bar passes through the U-shaped steel bar, the two are welded, there are many welding points and the fixing time is long. In addition, when welding, the long steel bar needs to be fixed from the U-shaped steel bar with a fine steel wire before the two can be welded. When fixing with a fine steel wire, the workload is further increased, affecting the construction efficiency. In addition, after fixing with bolts and nuts, the vibration of the bridge drives the expansion joint steel to move and vibrate, which easily leads to loosening of the bolts and nuts and poor stability.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an anchoring device for a bridge expansion joint, comprising:

[0008] The main unit includes an expansion joint steel, a plurality of positioning plates are fixed at equal intervals on the bottom of the expansion joint steel, and a circular hole is opened in the positioning plates;

[0009] The anchoring unit includes an embedded plate, a plurality of L-shaped steel bars are fixed on the top of the embedded plate, the expansion joint steel can be placed on the L-shaped steel bar, an S-shaped steel bar is fixed to the end of the L-shaped steel bar away from the embedded plate, a connecting bar is slidably connected in the circular hole, a straight steel bar is fixed to one end of the connecting bar, and the straight steel bar can be embedded in the S-shaped steel bar, an internal thread is provided at the end of the connecting bar away from the straight steel bar, a nut is threadedly connected to the outer side of the internal thread, and the nut and the positioning plate are abutted, and an anti-falling component is provided on the connecting bar to prevent the nut from falling off.

[0010] As a preferred solution of the anchoring device of the bridge expansion joint described in the utility model, the anti-slip component includes a shaft body rotating in the connecting rib, connecting plates are fixed at both ends of the shaft body, a long rod is slidably connected in the connecting plate, an ear plate is fixed at the end of the long rod away from the connecting plate, and a limiting sleeve is fixed on the side where the two ear plates are close to each other, and the limiting sleeve is slidably fitted on the outside of the connecting rib, and the limiting sleeve can be offset against the nut.

[0011] As a preferred solution of the anchoring device of the bridge expansion joint described in the utility model, a travel groove is opened in the connecting plate, a protrusion is fixed at one end of the long rod, and the protrusion is slidably fitted in the travel groove.

[0012] As a preferred solution of the anchoring device of the bridge expansion joint described in the utility model, a spring is provided on the outer side of the long rod, and one end of the spring is against the protrusion, and the other end of the spring is against the inner wall of the stroke groove.

[0013] As a preferred solution of the anchoring device of the bridge expansion joint described in the utility model, wherein: when the spring is in a normal state, the distance between the limit sleeve and the shaft body is smaller than the distance between the positioning plate and the shaft body.

[0014] As a preferred solution of the anchoring device of a bridge expansion joint described in the utility model, a plurality of guide holes are opened at equal intervals in the expansion joint steel section, a guide column is fixed on the top of the L-shaped steel bar, and the guide column can be embedded in the guide hole.

[0015] Beneficial effects of the utility model:

[0016] 1. Move the straight steel bar to the depression of the S-shaped steel bar, pass the connecting bar through the circular hole, and then thread the nut and the internal thread on the connecting bar, and make the nut and the positioning plate press against each other. At this time, the straight steel bar and the S-shaped steel bar are pressed against each other, that is, the expansion joint steel and the L-shaped steel bar are fixed together by the straight steel bar and the connecting bar, thus completing the installation of the expansion joint steel. This installation method is more convenient and faster than the existing fixing method.

[0017] 2. Pull the long rod to drive the limit sleeve to move. When the distance from the position of the limit sleeve after movement to the axis is greater than the distance from the end of the connecting bar away from the straight steel bar to the axis, rotate the long rod to rotate the limit sleeve until it coincides with the axis of the connecting bar. Then slowly loosen the long rod and drive the limit sleeve to be installed on the connecting bar under the spring rebound force, so that the limit sleeve and the nut are offset, thereby preventing the nut from falling off from the internal thread of the connecting bar, thereby increasing the stability of the expansion joint steel and L-shaped steel bar fixed together. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0019] Figure 1 It is a structural schematic diagram of the anchoring device in the prior art.

[0020] Figure 2 The utility model is a structural schematic diagram of an anchoring device for a bridge expansion joint.

[0021] Figure 3 It is a schematic diagram of the partial structure of an anchoring device for a bridge expansion joint according to the present invention.

[0022] Figure 4 This is an enlarged schematic diagram of the partial structure of an anchoring device for a bridge expansion joint according to the utility model from another perspective.

[0023] Figure 5 This is a schematic diagram of the partial structure of an anchoring device for a bridge expansion joint according to the utility model, which is disassembled and enlarged from another perspective.

[0024] Figure 6 This is a schematic structural diagram of the anti-slip assembly provided by the utility model.

[0025] Description of the drawings: 100, main unit; 101, expansion joint steel; 102, positioning plate; 103, round hole; 200, anchoring unit; 201, embedded plate; 202, L-shaped steel bar; 203, S-shaped steel bar; 204, straight steel bar; 205, connecting rib; 206, internal thread; 207, nut; 208, anti-slip assembly; 2081, shaft; 2082, connecting plate; 2083, long rod; 2084, limiting sleeve; 2085, ear plate; 209, protrusion; 210, travel groove; 211, spring; 213, guide hole; 214, guide column. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0030] Reference Figures 1-6 , which is an embodiment of the present utility model, provides an anchoring device for a bridge expansion joint, which includes: a main unit 100 and an anchoring unit 200;

[0031] The main unit 100 includes an expansion joint steel 101, a plurality of positioning plates 102 are fixed at equal intervals on the bottom of the expansion joint steel 101, and a circular hole 103 is opened in the positioning plate 102;

[0032] The anchoring unit 200 includes an embedded plate 201, and a plurality of L-shaped steel bars 202 are fixed on the top of the embedded plate 201. The expansion joint steel 101 can be placed on the L-shaped steel bar 202. An S-shaped steel bar 203 is fixed to the end of the L-shaped steel bar 202 away from the embedded plate 201. A connecting rib 205 is slidably connected in the circular hole 103. A straight steel bar 204 is fixed at one end of the connecting rib 205, and the straight steel bar 204 can be embedded in the S-shaped steel bar 203. An internal thread 206 is provided at the end of the connecting rib 205 away from the straight steel bar 204. A nut 207 is threadedly connected to the outer side of the internal thread 206, and the nut 207 and the positioning plate 102 are abutted. An anti-falling component 208 is provided on the connecting rib 205 to prevent the nut 207 from falling off. A plurality of guide holes 213 are opened at equal intervals in the expansion joint steel 101. A guide column 214 is fixed to the top of the L-shaped steel bar 202, and the guide column 214 can be embedded in the guide hole 213.

[0033] In the prior art, two bridges are provided with reserved grooves on one side close to each other. When in use, two relatively arranged embedded plates 201 are respectively embedded in the reserved grooves of the two bridges by pouring concrete, and then the expansion joint steel 101 is installed. When installing the expansion joint steel 101, first align the guide hole 213 in the expansion joint steel 101 with the guide column 214, and then lower the expansion joint steel 101 so that the guide column 214 is embedded in the guide hole 213. At this time, the bottom of the expansion joint steel 101 and the top of the L-shaped steel bar 202 are in contact with each other, and then Move the straight steel bar 204 to the recess of the S-shaped steel bar 203, and make the connecting bar 205 pass through the circular hole 103, then thread the nut 207 and the internal thread 206 on the connecting bar 205, and make the nut 207 and the positioning plate 102 press together. At this time, the straight steel bar 204 and the S-shaped steel bar 203 press together, that is, the expansion joint steel 101 and the L-shaped steel bar 202 are fixed together by the straight steel bar 204 and the connecting bar 205, and the installation of the expansion joint steel 101 is completed. Compared with the existing fixing method (such as Figure 1 As shown, the U-shaped steel bar 1 is first embedded, and then the long steel bar 2 is passed through the U-shaped steel bar 1, and the long steel bar 2 and the U-shaped steel bar 1 are welded, and then the expansion joint steel 4 is placed on the U-shaped steel bar 1, and then the U-shaped installation rib 3 is passed through the long steel bar 2 horizontally, so that the long steel bar 2 is located in the U-shaped installation rib 3, and then the U-shaped installation rib 3 and the expansion joint steel 4 are fixed with bolts and nuts. During welding, it is also necessary to first fix the long steel bar 2 from the U-shaped steel bar 1 with a thin steel wire before the two can be welded).

[0034] In addition, the anti-slip component 208 includes a shaft body 2081 rotating in the connecting rib 205, and connecting plates 2082 are fixed at both ends of the shaft body 2081. A long rod 2083 is slidably connected in the connecting plate 2082, and an ear plate 2085 is fixed at one end of the long rod 2083 away from the connecting plate 2082. The two ear plates 2085 are close to each other and a limiting sleeve 2084 is fixed on one side. The limiting sleeve 2084 is slidably fitted on the outside of the connecting rib 205, and the limiting sleeve 2084 can be offset against the nut 207. A travel groove 210 is provided in the connecting plate 2082, and one end of the long rod 2083 is fixed The protrusion 209 is slidably fitted in the travel groove 210, and a spring 211 is sleeved on the outside of the long rod 2083, and one end of the spring 211 is against the protrusion 209, and the other end of the spring 211 is against the inner wall of the travel groove 210. When the spring 211 is in the normal state, the distance between the limit sleeve 2084 and the shaft body 2081 is smaller than the distance between the positioning plate 102 and the shaft body 2081, so that when the nut 207 and the internal thread 206 of the connecting rib 205 are threadedly connected, the limit sleeve 2084 is sleeved on the connecting rib 205, and the limit sleeve 2084 can be against the nut 207.

[0035] When in use, after the nut 207 is threadedly connected to the internal thread 206 on the connecting rib 205, and the nut 207 and the positioning plate 102 are against each other, the long rod 2083 is pulled to drive the limiting sleeve 2084 and the protrusion 209 to move, and the protrusion 209 compresses the spring 211. When the distance between the position of the limiting sleeve 2084 after movement and the shaft body 2081 is greater than the distance between the connecting rib 205 away from one end of the straight steel bar 204 and the shaft body 2081, the long rod 2083 is rotated at this time to rotate the limiting sleeve 2084 until it coincides with the axis of the connecting rib 205, and then the long rod 2083 is slowly loosened, and the limiting sleeve 2084 is driven to be sleeved on the connecting rib 205 under the rebound force of the spring 211. , so that the limiting sleeve 2084 and the nut 207 are offset against each other, thereby preventing the nut 207 from falling off from the internal thread 206 of the connecting rib 205, that is, increasing the stability of the expansion joint steel 101 and the L-shaped steel bar 202 fixed together; it should be noted that before the connecting rib 205 is embedded in the circular hole 103, the limiting sleeve 2084 is not set on the connecting rib 205. After the connecting rib 205 is passed through the circular hole 103 and the nut 207 is threadedly connected to the internal thread 206 of the connecting rib 205, the long rod 2083 is pulled and the connecting plate 2082 is rotated, thereby driving the limiting sleeve 2084 to rotate, and then the limiting sleeve 2084 is set on the connecting rib 205.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An anchoring device for a bridge expansion joint, characterized in that: include: The main body unit (100) comprises an expansion joint steel (101), a plurality of positioning plates (102) are fixed at equal intervals on the bottom of the expansion joint steel (101), and a circular hole (103) is formed in the positioning plate (102); The anchoring unit (200) comprises an embedded plate (201), a plurality of L-shaped steel bars (202) are fixed on the top of the embedded plate (201), the expansion joint steel (101) can be placed on the L-shaped steel bars (202), an S-shaped steel bar (203) is fixed on one end of the L-shaped steel bar (202) away from the embedded plate (201), a connecting bar (205) is slidably connected in the circular hole (103), and one end of the connecting bar (205) is fixed. A straight steel bar (204) is provided, and the straight steel bar (204) can be embedded in the S-shaped steel bar (203); an internal thread (206) is provided at one end of the connecting bar (205) away from the straight steel bar (204); a nut (207) is threadedly connected to the outer side of the internal thread (206); the nut (207) and the positioning plate (102) are abutted against each other; and an anti-falling component (208) is provided on the connecting bar (205) to prevent the nut (207) from falling off.

2. The anchoring device for a bridge expansion joint according to claim 1, characterized in that: The anti-slip assembly (208) includes a shaft (2081) that rotates inside the connecting rib (205), a connecting plate (2082) is fixed at both ends of the shaft (2081), a long rod (2083) is slidably connected inside the connecting plate (2082), an ear plate (2085) is fixed at one end of the long rod (2083) away from the connecting plate (2082), a limiting sleeve (2084) is fixed on the side where the two ear plates (2085) are close to each other, and the limiting sleeve (2084) is slidably fitted outside the connecting rib (205), and the limiting sleeve (2084) can be abutted against the nut (207).

3. The anchoring device for a bridge expansion joint according to claim 2, characterized in that: A travel groove (210) is provided in the connecting plate (2082), a protrusion (209) is fixed to one end of the long rod (2083), and the protrusion (209) is slidably fitted in the travel groove (210).

4. The anchoring device for a bridge expansion joint according to claim 3, characterized in that: A spring (211) is sleeved on the outer side of the long rod (2083), and one end of the spring (211) abuts against the protrusion (209), while the other end of the spring (211) abuts against the inner wall of the travel groove (210).

5. The anchoring device for a bridge expansion joint according to claim 4, characterized in that: When the spring (211) is in a normal state, the distance between the limiting sleeve (2084) and the shaft body (2081) is smaller than the distance between the positioning plate (102) and the shaft body (2081).

6. The anchoring device for a bridge expansion joint according to claim 1, characterized in that: A plurality of guide holes (213) are provided at equal intervals in the expansion joint steel (101), a guide column (214) is fixed on the top of the L-shaped steel bar (202), and the guide column (214) can be embedded in the guide hole (213).

Images