CN216919997U - Assembled telescoping device - Google Patents
Assembled telescoping device Download PDFInfo
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- CN216919997U CN216919997U CN202220427214.7U CN202220427214U CN216919997U CN 216919997 U CN216919997 U CN 216919997U CN 202220427214 U CN202220427214 U CN 202220427214U CN 216919997 U CN216919997 U CN 216919997U
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Abstract
The utility model discloses an assembled telescopic device, which comprises a telescopic device body and two prefabricated connecting pieces, wherein the two prefabricated connecting pieces are respectively prefabricated between two beam ends or between a beam end and an abutment; the telescopic device body comprises two displacement boxes and a plurality of cross beams arranged between the two displacement boxes side by side, the cross beams are supported by a plurality of supporting cross beams, and two ends of each supporting cross beam are respectively connected with the two displacement boxes; the displacement box is detachably connected with the beam end or the bridge abutment. The utility model can cast the prefabricated connecting piece with the embedded ribs and the embedded sleeves together during on-site construction, and complete concrete curing by installing a standardized flow, thereby ensuring the production quality and precision. When the telescopic device body is arranged at the butt joint of the bridge deck, the displacement box can be fixed on the prefabricated connecting piece through the bolt, and the concrete does not need to be poured on site, so that the workload and the construction period of site construction are reduced.
Description
Technical Field
The utility model relates to an assembled telescopic device, and belongs to the technical field of bridge telescopic devices.
Background
The expansion device is an important component of a bridge structure, and is required to meet the requirements of longitudinal, transverse and vertical deflection and corner of the bridge caused by temperature change, hurricane, vehicle-mounted, earthquake and other conditions, and bear the impact of various complex dynamic loads with different magnitudes. Is the most key and bitter bridge structure protection device.
To bridge telescoping device installation, maintenance and change problem, have a great deal of drawback among the domestic and foreign prior art, mainly reflect:
first, bridge telescoping device installation
The prior art at home and abroad adopts site construction, and the main construction process is as follows: cutting a slot, slotting, cleaning a reserved slot opening, lifting a telescopic device into the slot, debugging, welding and fixing, supporting a template, pouring concrete, curing by using water, and cleaning construction waste (asphalt, filler and the like). The construction process has the following disadvantages:
1. cutting and reversely excavating the slot to cause huge national resource waste of asphalt, fillers and the like in the reserved slot opening;
2. in the field extensive construction, mechanical equipment and vehicles can cause the asphalt pavement to be polluted and damaged by diesel oil, and the pollution, dust emission and the like of the pier structure become important pollution sources due to the dirty, messy and poor phenomena on the field;
3. the noise generated by mechanical equipment used in construction causes serious environmental pollution;
4. in the construction grooving process, a breaking hammer is required to chisel asphalt or concrete in a reserved notch, and the caused vibration seriously affects the safety of a main structure of a bridge;
5. the construction teams are not level, the construction precision and quality cannot be guaranteed, the service life of the telescopic device is greatly shortened, and even the telescopic device is out of the duty period of defects, fails in function and is damaged and needs to be replaced again;
6. due to the difference of field climatic environments (extremely hot and cold) or rain and snow weather in the concrete pouring process, the standardized maintenance of the concrete cannot be realized, and the problems of cracking, crushing and leakage of the concrete are very prominent;
7. when the upper layer expansion device of a cross-line segment, double-layer or multi-layer bridge is constructed on site, the normal and safe traffic of the lower layer traffic is seriously influenced when the lower layer traffic is in a traffic state;
8. the construction of the bridge expansion device belongs to short, flat and fast engineering, so that the recruitment is difficult, the management difficulty is high, and the labor cost is high;
9. because the construction of the bridge expansion device belongs to high-altitude operation, the conditions of side-to-side vehicle construction or cross construction exist, and the field construction of the bridge expansion device needs to be grooved, so that an operation area is in a deep gully state for a long time, and casualties and traffic accidents are easily caused;
10. when the main structure of the bridge is constructed, the reserved notch is irregular (the structural joint is too wide or blocked), the embedded steel bar is lost, the reserved notch is too shallow or too deep, the width of the reserved notch is super-wide or too narrow, garbage filled in the structural joint cannot be cleaned, and the like, so that the construction difficulty of the bridge expansion device is greatly increased, the construction quality is influenced, and the premature damage of the expansion device is accelerated;
11. when the bridge expansion device is constructed, the phenomenon of work nest is caused in rainy and snowy weather, and the waste of resources such as manpower, equipment, vehicles and the like is increased;
12. the construction of the bridge expansion device has a serious common phenomenon of construction period robbing, the standardized or refined construction cannot be carried out, and the process quality control and supervision are relaxed, so that the expansion device is damaged too early.
Second, maintenance of bridge expansion device
Modulus formula telescoping device structure among the domestic and foreign prior art is at the in-process of using, the displacement case is wrapped up firmly in the post-cast strip concrete, can't dismantle, slip elastic element (sliding spring and sliding support) among the telescoping device, after the damage appears in vulnerable parts such as control spring, especially little displacement volume telescoping device, the operating space who does not detect and maintain the maintenance work needs, also can't set up because of the space is narrow and small in the telescoping device below, perhaps the condition sets up and does not set up under the condition of overhauing the platform, make the bridge telescoping device do not reach timely disease specialty and detect and administer, lead to the telescoping device system failure paralysed, roof beam fatigue fracture in the telescoping device, and can't restore, thereby seriously influence driving safety, treat whole change bridge telescoping device promptly.
The comb plate telescopic device structure in the prior art at home and abroad has congenital defects in the structure in the application process: (1) the structure is rigid; (2) the friction coefficient is high; (3) the anchoring screw is pre-buried in leveling layer concrete, once the fracture can't change. Under the vehicle impact load repeatedly, pinion rack lower surface and corrosion resistant plate are long-term to rubbing, cause pinion rack lower surface paint anticorrosive coating to drop, the pinion rack attenuation, form the harmful space of echelonment, lead to the bolt not hard up and the pinion rack is beated, and final bolt receives the shearing force and splits, and can't restore to seriously influence driving safety, the bridge telescoping device is waited for to wholly change urgently.
Thirdly, replacing the bridge expansion device
In the prior art at home and abroad, a semi-closed traffic mode, namely, construction while passing is adopted for replacing the bridge expansion device. Traditional type telescoping device, no matter be modular telescoping device or fishback telescoping device and change the construction, all need the quartering hammer to chisel to post-cast strip concrete and remove, not only construction speed is slow, and it is big to chisel the degree of difficulty moreover, and the vibrations that arouse seriously influence bridge major structure safety, and in the full life of bridge, the telescoping device need change more than ten times at least, changes the life that all can seriously attenuate bridge major structure at every turn. Therefore, during operation and management, not only the maintenance cost is greatly increased, but also the society is influenced, and huge waste is caused to the country.
In view of the above, a need exists for a new and subversive bridge expansion device that can be installed and replaced quickly without chiseling off post-cast strip concrete. The inventor of the utility model actively carries out research and innovation based on the practical experience and professional knowledge which is abundant for years when the product engineering is applied and is matched with the application of the theory, so as to create a fully prefabricated assembled bridge expansion device, and the fully prefabricated assembled bridge expansion device has higher practicability.
SUMMERY OF THE UTILITY MODEL
To overcome the disadvantages of the prior art, the present invention provides an assembled telescopic device to solve the problems of the prior art.
In order to achieve the above object, the present invention adopts the following technical solutions:
the assembled telescopic device comprises a telescopic device body and two prefabricated connecting pieces, wherein the two prefabricated connecting pieces are respectively prefabricated between two beam ends or between a beam end and an abutment;
the telescopic device body comprises two displacement boxes and a plurality of cross beams arranged between the two displacement boxes side by side, the cross beams are supported by a plurality of supporting cross beams, and two ends of each supporting cross beam are respectively connected with the two displacement boxes; the displacement box is detachably connected with the beam end or the bridge abutment.
Preferably, in the assembled telescopic device, the prefabricated connecting piece comprises a vertical connecting surface and a bottom supporting surface, and the vertical connecting surface and the bottom supporting surface are both connected to the beam end or the bridge abutment; when the displacement box is arranged on the prefabricated connecting piece, the end part and the bottom part of the displacement box are respectively connected with the vertical connecting surface and the bottom supporting surface.
Preferably, in the assembled type telescopic device, the prefabricated connecting piece is prefabricated at the beam end or the bridge abutment through the embedded ribs.
Preferably, in the assembled telescopic device, the embedded ribs include horizontal embedded ribs and vertical embedded ribs; the vertical connecting surface is connected with the beam end or the abutment through the horizontal embedded ribs, and the bottom supporting surface is connected with the beam end or the abutment through the vertical embedded ribs.
Preferably, in the assembled telescopic device, the beam end of the prefabricated connecting piece or the bridge abutment connecting side is provided with an embedded sleeve, and the displacement box is connected with the embedded sleeve through a bolt.
Preferably, in the assembled telescopic device, the prefabricated connecting piece comprises a vertical connecting surface and a bottom supporting surface, and the embedded sleeve comprises a horizontal embedded sleeve and a vertical embedded sleeve; a beam end of the vertical connecting surface or a bridge abutment connecting side is provided with a transverse embedded sleeve; the bottom of the bottom supporting surface is provided with a vertical embedded sleeve.
Preferably, in the assembled telescopic device, the surface of the embedded sleeve is provided with an annular groove or a convex rib.
Preferably, in the above-described fabricated telescopic device, the support beam is connected to the displacement box in an inclined manner.
Preferably, in the fabricated telescopic device, the cross beam includes an edge beam connected to the displacement box, and a middle beam disposed between the two edge beams, the middle beam is provided with a support ear ring, and the upper end and the lower end of the middle beam are respectively connected to the support ear ring through a support and a spring support.
Preferably, at least two dampers are further arranged between the two displacement boxes of the assembled telescopic device.
The utility model achieves the following beneficial effects:
compared with the prior art, the prefabricated connecting piece with the embedded ribs and the embedded sleeves can be cast together during field construction, and a standardized flow is installed to finish concrete curing, so that the production quality and precision are ensured.
When installing above-mentioned telescoping device body in bridge floor butt joint department, only need to be fixed in the prefabricated connecting piece with the displacement case through the bolt and can accomplish, because the cast concrete does not need on the spot, also do not adopt wet joint connection, moreover, inside the telescoping device body was placed in to the attenuator in, its installation and debugging also can be accomplished in the workshop, consequently the work load and the construction cycle of site operation have significantly reduced. When the telescopic device body needs to be replaced, only the bolts between the displacement box and the prefabricated connecting piece need to be loosened.
Drawings
FIG. 1 is a first three-dimensional view of the present invention employing a three-dimensional indexing retractor;
FIG. 2 is a second three-dimensional view (hidden prefabricated connecting piece) of the present invention using a three-dimensional displacement type telescoping device;
FIG. 3 is a partial bottom block diagram of the present invention employing a three-dimensional indexing telescoping device;
FIG. 4 is a block diagram of the modular expansion device of the present invention;
the meaning of the reference symbols in the figures: 1-displacement box; 2-prefabricating a connecting piece; 3-a side beam; 4-a middle beam; 5, embedding ribs; 6, pre-embedding a sleeve; 7-supporting the beam; 8-a damper; 11-grooving; 21-vertical joint face; 22-a bottom support surface; 41-supporting earrings; 51-transverse embedded ribs; 52-vertical pre-buried ribs; 61-transversely embedding a sleeve; 62-vertically embedding a sleeve; 71-a support pedestal; 72-spring support.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 4: the embodiment discloses an assembled telescoping device, including telescoping device body and two prefabricated connecting piece 2, two prefabricated connecting piece 2 prefabricate respectively between two beam ends or between beam end and abutment. Above-mentioned prefabrication is placed and is adopted the mode realization of built-in fitting, and the built-in rib 5 among the prior art is chooseed for use to the built-in fitting, and built-in rib 5 adopts the twisted steel usually for promote and the joint strength between the concrete.
The telescoping device body includes two displacement case 1 and a plurality of crossbeam that sets up side by side between two displacement case 1, and the crossbeam includes boundary beam 3 and intermediate beam 4 usually, and intermediate beam 4 also has many usually, and many parallel arrangement.
The displacement box 1 of the present embodiment is detachably connected to the beam end or the abutment, and when the displacement box 1 is installed on the prefabricated connecting member 2, the end and the bottom of the displacement box 1 are respectively connected to the vertical connecting surface 21 and the bottom supporting surface 22. The detachable connection mode can adopt the most common bolt connection in the prior art, and specifically comprises the following steps: the beam end or the abutment connecting side of the prefabricated connecting piece 2 is provided with an embedded sleeve 6, and the displacement box 1 is connected with the embedded sleeve 6 through a bolt. The upper surface of the displacement box 1 is also provided with notches 11 for preventing slipping, the notches 11 being generally transversely arranged and having a plurality of strips.
The prefabricated connecting member 2 of the present embodiment is generally a steel plate with an L-shaped cross section, and can fix the bottom and the side of the displacement box 1, that is, the prefabricated connecting member 2 includes a vertical connecting surface 21 and a bottom supporting surface 22, and the vertical connecting surface 21 and the bottom supporting surface 22 are perpendicular to each other in most cases. The vertical connecting surface 21 and the bottom supporting surface 22 are both connected to a beam end or a bridge abutment; thus, a rectangular notch can be formed at the beam end or the bridge abutment end, the bottom of the notch is the bottom supporting surface 22, the side part is the vertical connecting surface 21, and two matched notches (for installing the same telescopic device) are arranged in parallel and oppositely.
The embedded ribs 5 comprise transverse embedded ribs 51 and vertical embedded ribs 52; the vertical connecting surface 21 is connected with the beam end or the bridge abutment through a horizontal embedded rib 51, and the bottom supporting surface 22 is connected with the beam end or the bridge abutment through a vertical embedded rib 52.
Due to the different positions, the embedded sleeve 6 also comprises a transverse embedded sleeve 61 and a vertical embedded sleeve 62. The transverse embedded sleeve 61 is positioned at the beam end or the abutment connecting side of the vertical connecting surface 21; the vertical embedded sleeves 62 are located at the bottom of the bottom support surface 22. The surface of the pre-buried sleeve 6 is provided with a ring groove or a convex rib for improving the bonding force with the concrete.
The embedded ribs 5 and the embedded sleeves 6 on the same surface of the prefabricated connecting piece 2 are preferably in staggered relation. The embedded ribs 5, the embedded sleeves 6 and the prefabricated connecting pieces 2 are connected in a welding mode.
The crossbeam supports through a plurality of supporting beam 7, and the telescoping device of this embodiment can be three-dimensional displacement formula telescoping device, also can be grid modulus formula telescoping device, and when being three-dimensional displacement formula telescoping device, supporting beam 7 slope is connected in displacement case 1 for promote the stability and the reliability of connecting. The specific connection mode is as follows: the centre sill 4 is provided with a support ear 41, the support ear 41 being U-shaped, the U-shape being open in the horizontal direction. The upper end and the lower end of the middle beam 4 are respectively connected with the supporting ear rings 41 through a supporting support 71 and a spring support 72. Two ends of the supporting beam 7 are respectively supported and fixed through the two displacement boxes 1.
As shown in fig. 4: when the telescopic device is a lattice module type telescopic device, the supporting beam 7 is fixedly connected to a certain middle beam 4, and the supporting beam 7 is perpendicular to the middle beam 4.
When the bridge deck is subjected to longitudinal force (vehicle starts or brakes), longitudinal acting force can be generated between the bridge deck and can act on the telescopic device between the two bridge decks, at least two dampers 8 are further arranged between the two displacement boxes 1 of the embodiment in order to buffer and release the acting force, and the dampers 8 are located at the bottom of the middle beam 4 and are approximately equal to the height of the supporting cross beam 7.
When the assembled telescopic device recorded in the embodiment needs to be installed between two beam ends or between the beam end and an abutment, the prefabricated connecting piece 2 with the embedded ribs 5 and the embedded sleeves 6 is prefabricated at the beam end or the abutment, so that reserved notches are formed at the beam end or the abutment and are provided with a plurality of through holes which are used for installing bolts and are opposite to the embedded sleeves 6.
Then the telescoping device body that will have the portal frame is transported to the job site to place in prefabricated connecting piece 2 inside and adjust to the design elevation position, if the distance between two displacement case 1 and the size between two prefabricated connecting piece 2 do not accord with, then adjust the distance between two displacement case 1 through the portal frame. The two displacement boxes 1 are respectively fixed on the prefabricated connecting piece 2 through bolts. When the installation is finished, the heights of the upper surface of the telescopic device body and the bridge deck are equal.
Compared with the prior art, the embodiment can be used for pouring the prefabricated connecting piece 2 with the embedded ribs 5 and the embedded sleeves 6 together during field construction, concrete curing is completed according to a standardized flow, and production quality and precision are guaranteed.
When installing above-mentioned telescoping device body in bridge floor butt joint department, only need through the bolt with displacement case 1 be fixed in prefabricated connecting piece 2 can accomplish, because the on-the-spot concrete that does not need to pour, also do not adopt wet joint connection, moreover, place the telescoping device body in the attenuator 8 inside, its installation and debugging also can be accomplished in the workshop, consequently the work load and the construction cycle of site operation have significantly reduced. When the telescopic device body needs to be replaced, only the bolts between the displacement box 1 and the prefabricated connecting piece 2 need to be loosened.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The assembled telescopic device is characterized by comprising a telescopic device body and two prefabricated connecting pieces (2), wherein the two prefabricated connecting pieces (2) are respectively prefabricated between two beam ends or between a beam end and a bridge abutment;
the telescopic device body comprises two displacement boxes (1) and a plurality of cross beams arranged between the two displacement boxes (1) side by side, the cross beams are supported by a plurality of supporting cross beams (7), and two ends of each supporting cross beam (7) are respectively connected with the two displacement boxes (1);
the displacement box (1) is detachably connected with the beam end or the bridge abutment.
2. The fabricated telescopic device according to claim 1, wherein the prefabricated connecting piece (2) comprises a vertical connecting surface (21) and a bottom supporting surface (22), and the vertical connecting surface (21) and the bottom supporting surface (22) are both connected to a beam end or a bridge abutment;
when the displacement box (1) is arranged on the prefabricated connecting piece (2), the end part and the bottom part of the displacement box (1) are respectively connected with the vertical connecting surface (21) and the bottom supporting surface (22).
3. The fabricated telescopic device according to claim 2, characterized in that the prefabricated connecting pieces (2) are prefabricated at beam ends or bridge abutments by means of embedded tendons (5).
4. The fitted telescopic device according to claim 3, wherein the embedded ribs (5) comprise transverse embedded ribs (51) and vertical embedded ribs (52); the vertical connecting surface (21) is connected with the beam end or the bridge abutment through a transverse embedded rib (51), and the bottom supporting surface (22) is connected with the beam end or the bridge abutment through a vertical embedded rib (52).
5. The assembled telescopic device according to claim 1, wherein a pre-embedded sleeve (6) is arranged at the beam end or the abutment connecting side of the prefabricated connecting piece (2), and the displacement box (1) is connected with the pre-embedded sleeve (6) through a bolt.
6. The assembled telescopic device according to claim 5, wherein the prefabricated connecting piece (2) comprises a vertical connecting surface (21) and a bottom supporting surface (22), and the embedded sleeve (6) comprises a transverse embedded sleeve (61) and a vertical embedded sleeve (62);
a transverse embedded sleeve (61) is arranged at the beam end of the vertical connecting surface (21) or the connecting side of the abutment;
the bottom of the bottom supporting surface (22) is provided with a vertical embedded sleeve (62).
7. The assembled telescopic device according to claim 5, wherein the surface of the embedded sleeve (6) is provided with a ring groove or a rib.
8. The fabricated telescopic device according to claim 1, characterized in that the supporting beam (7) is connected to the displacement box (1) at an inclination; the crossbeam sets up intermediate beam (4) between two boundary beams (3) including connecting in boundary beam (3) of displacement case (1), intermediate beam (4) are equipped with support earrings (41), upper end, the lower extreme of intermediate beam (4) are respectively through supporting support (71), spring support (72) connection support earrings (41).
9. The fabricated telescopic device according to claim 1, characterized in that the cross beams comprise edge beams (3) connected to the displacement box (1), a middle beam (4) arranged between two edge beams (3), the supporting cross beam (7) is fixedly connected to a certain middle beam (4), and the supporting cross beam (7) is perpendicular to the middle beam (4).
10. The modular telescopic device according to claim 1, characterized in that at least two dampers (8) are further arranged between the two displacement boxes (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220427214.7U CN216919997U (en) | 2022-03-01 | 2022-03-01 | Assembled telescoping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220427214.7U CN216919997U (en) | 2022-03-01 | 2022-03-01 | Assembled telescoping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216919997U true CN216919997U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220427214.7U Active CN216919997U (en) | 2022-03-01 | 2022-03-01 | Assembled telescoping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216919997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411542A (en) * | 2022-03-01 | 2022-04-29 | 江苏领跑梦设计研究有限公司 | Assembled telescoping device |
| CN118581799A (en) * | 2024-08-06 | 2024-09-03 | 山西交科桥梁附件有限责任公司 | Multidirectional displacement bridge expansion joint device |
-
2022
- 2022-03-01 CN CN202220427214.7U patent/CN216919997U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411542A (en) * | 2022-03-01 | 2022-04-29 | 江苏领跑梦设计研究有限公司 | Assembled telescoping device |
| CN118581799A (en) * | 2024-08-06 | 2024-09-03 | 山西交科桥梁附件有限责任公司 | Multidirectional displacement bridge expansion joint device |
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Effective date of registration: 20230413 Address after: 211500 Fuyun group, Ma'an street, Ma'an central community, Liuhe District, Nanjing City, Jiangsu Province Patentee after: Jiangsu leading mengmaole Zhizao Technology Group Co.,Ltd. Patentee after: ZHEJIANG JIAOGONG ADVANCED-GRADE HIGHWAY MAINTENANCE CO.,LTD. Patentee after: Jiangsu Jiaoke leading dream High Tech Co.,Ltd. Patentee after: JSTI GROUP Co.,Ltd. Address before: 211500 Zhujiashan, north of Ma'an street, Liuhe District, Nanjing City, Jiangsu Province Patentee before: Jiangsu leading Dream Design and Research Co.,Ltd. Patentee before: ZHEJIANG JIAOGONG ADVANCED-GRADE HIGHWAY MAINTENANCE CO.,LTD. Patentee before: Jiangsu Jiaoke leading dream High Tech Co.,Ltd. Patentee before: JSTI GROUP Co.,Ltd. |
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