CN216919998U - Comb plate assembled expansion device - Google Patents
Comb plate assembled expansion device Download PDFInfo
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- CN216919998U CN216919998U CN202220431492.XU CN202220431492U CN216919998U CN 216919998 U CN216919998 U CN 216919998U CN 202220431492 U CN202220431492 U CN 202220431492U CN 216919998 U CN216919998 U CN 216919998U
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Abstract
The utility model discloses a comb plate assembled telescopic device, which comprises a movable tooth plate, a fixed tooth plate, a prefabricated connecting piece I and a prefabricated connecting piece II, wherein the prefabricated connecting piece I and the prefabricated connecting piece II are respectively prefabricated between two beam ends or between the beam ends and a bridge abutment; the movable toothed plate can be detachably connected to the first prefabricated connecting piece, and the fixed toothed plate can be detachably connected to the second prefabricated connecting piece. The prefabricated connecting piece I and the prefabricated connecting piece II can be poured at the end part in the pouring process of a beam end or an abutment, and concrete curing is finished according to a standardized flow, so that the production quality and precision are ensured. Meanwhile, secondary construction of on-site grooving after bridge erection is not needed. When needing to be changed or overhauld, only need loosen corresponding bolt take off the fishback can. Because concrete does not need to be poured on site, the workload and the construction period of site construction can be greatly reduced.
Description
Technical Field
The utility model relates to a comb plate assembly type telescopic device, and belongs to the technical field of 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 turning angles of the bridge caused by conditions such as temperature change, hurricane, vehicle-mounted and earthquake 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 expansion 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 off asphalt or concrete in the reserved notch, and the caused vibration seriously affects the safety of the main structure of the 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 lower layer traffic is in a traffic state, and the normal and safe traffic of the lower layer traffic is seriously influenced;
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 remaining defects that the reserved notch is irregular (the structural joint is too wide or is resisted), 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 exist, 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 expansion device structure in the prior art at home and abroad has congenital defects in the structure: (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 traffic is carried out, is adopted for replacing the bridge expansion device. Traditional type telescoping device no matter is modular telescoping device or fishback telescoping device and changes the construction, all needs the quartering hammer to chisel out the post-cast strip concrete, and not only construction speed is slow, and the chisel out the degree of difficulty is big moreover, and the vibrations that arouse seriously influence bridge major structure safety, 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 is the maintenance cost 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
In order to solve the defects of the prior art, the present invention provides a comb plate assembled type telescopic device to solve the problems in the prior art.
In order to achieve the above object, the present invention adopts the following technical solutions:
the comb plate assembly type telescopic device comprises a movable tooth plate, a fixed tooth plate, a prefabricated connecting piece I and a prefabricated connecting piece II, wherein the prefabricated connecting piece I and the prefabricated connecting piece II are respectively prefabricated between two beam ends or between the beam ends and a bridge abutment;
the movable toothed plate can be detachably connected to the first prefabricated connecting piece, and the fixed toothed plate can be detachably connected to the second prefabricated connecting piece.
Preferably, in the above comb plate assembly type telescopic device, the first comb teeth pass through a gap between the two beam ends or between the beam end and the bridge abutment, and the second comb teeth do not pass through a gap between the two beam ends or between the beam end and the bridge abutment.
Preferably, in the comb plate assembly type telescopic device, the prefabricated connecting piece is an L-shaped steel plate, and the side part and the bottom part are both prefabricated at the beam end or the bridge abutment through the first embedded rib;
the prefabricated connecting piece II is also an L-shaped steel plate, and the side part and the bottom part are prefabricated at the other beam end or the bridge abutment through the embedded rib II.
Preferably, aforementioned fishback assembled telescoping device, pre-buried muscle are the twisted steel, and pre-buried muscle two is also the twisted steel.
Preferably, in the comb plate assembly type telescopic device, the movable toothed plate is connected to the bottom of the first prefabricated connecting piece through a bolt, and the fixed toothed plate is connected to the bottom of the second prefabricated connecting piece through a bolt.
Preferably, in the comb plate assembly type telescopic device, the bottom of the prefabricated connecting piece i is provided with a first embedded sleeve, and the bottom of the prefabricated connecting piece ii is provided with a second embedded sleeve;
the bolt connected to the movable toothed plate penetrates through the prefabricated connecting piece I and is connected with the embedded sleeve I through threads;
and the bolt connected to the fixed toothed plate penetrates through the second prefabricated connecting piece and is connected with the second embedded sleeve through threads.
Preferably, in the comb plate assembly type telescopic device, an annular groove or a convex rib is arranged on the outer surface of the first embedded sleeve; and the outer surface of the second embedded sleeve is also provided with an annular groove or a convex rib.
Preferably, in the comb plate assembled type telescopic device, the second comb teeth comprise thin comb teeth and thick comb teeth which are arranged alternately, and the upper surfaces of the thin comb teeth and the thick comb teeth are flush with the upper surface of the fixed tooth plate;
the thin comb teeth are connected between two adjacent comb teeth I through the embedded blocks;
the thick comb teeth are also connected with the second embedded sleeve through bolts.
Preferably, in the comb plate assembly type telescopic device, the bottom of the insert block is further provided with a sliding support, a base plate is further arranged between the thick comb teeth and the second prefabricated connecting piece, and the sliding support is connected with the base plate.
Preferably, aforementioned fishback assembled telescoping device, sliding support are including embedding to the inside block rubber of abaculus, and the block rubber is connected the face with the backing plate and still is equipped with the super wear-resisting sliding material of self-lubricating, and the abaculus upper surface is connected the face with thin pinion rack and also is equipped with the super wear-resisting sliding material of self-lubricating.
Preferably, both ends of the backing plate of the comb plate assembly type telescopic device extend to the root of the second comb teeth and the outer edge of the collecting groove respectively, and the backing plate is embedded in the bottom of the first comb teeth.
The utility model achieves the following beneficial effects:
the prefabricated connecting piece I and the prefabricated connecting piece II can be poured at the end part in the pouring process of a beam end or an abutment, and concrete curing is finished according to a standardized flow, so that the production quality and precision are ensured. Meanwhile, secondary construction of on-site grooving after bridge erection is not needed.
When needing to be changed or overhauld, only need loosen corresponding bolt take off the fishback can. Because concrete does not need to be poured on site, and wet joint connection is not adopted, the workload and the construction period of site construction can be greatly reduced.
Besides the longitudinal displacement function, the utility model also has certain functions of transverse displacement and vertical displacement.
Drawings
FIG. 1 is a partial block diagram of the first embodiment of the present invention;
figure 2 is a bottom view of the comb plate of the present invention;
FIG. 3 is a partial block diagram of the present invention;
the meaning of the reference symbols in the figures: 1-prefabricating a first connecting piece; 2, prefabricating a second connecting piece; 3-a movable toothed plate; 4-fixing the toothed plate; 5, embedding a sleeve I; 6-embedding a second sleeve; 7-embedding a rib I; 8-embedding a second rib; 9-a collecting tank; 10-a backing plate; 31-comb one; 41-thin comb teeth; 42-thick comb teeth; 32-an insert; 321-a sliding support; 421-through hole.
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 3: the embodiment discloses fishback assembled telescoping device, including the adjustable tooth board 3, fixed tooth board 4 and prefabricate in prefabricated connecting piece 1, the prefabricated connecting piece two 2 between two beam ends or between beam end and the abutment respectively, adjustable tooth board 3 is equipped with broach one 31, and fixed tooth board 4 is equipped with broach two, and wherein broach one 31, broach two are staggered arrangement in proper order. Wherein the movable toothed plate 3 can be detachably connected to the first prefabricated connecting piece 1, and the fixed toothed plate 4 can be detachably connected to the second prefabricated connecting piece 2.
The expansion device needs to block the gap of the bridge, and the first comb teeth 31 of the embodiment cross the gap between two beam ends or between the beam end and the bridge abutment where the expansion device is installed, but the second comb teeth do not cross the gap between the two beam ends or between the beam end and the bridge abutment. Below said gap there is a removable collecting gutter 9. The collecting groove 9 is used for collecting sundries leaking from the gap of the first comb teeth 31.
The prefabricated connecting piece I1 of the embodiment is an L-shaped steel plate, and the L-shaped steel plate is provided with two vertical surfaces, one surface is vertically arranged and is called as a side part, and the other surface is horizontally arranged and is called as a bottom part. The distance of the side part is consistent with the thickness of the corresponding comb plate. The side part and the bottom part are prefabricated at the beam end or the bridge abutment through a first embedded rib 7. Similarly, the prefabricated connecting piece II 2 is also an L-shaped steel plate, and the side part and the bottom part are prefabricated at the other beam end or the bridge abutment through the embedded ribs II 8.
The first embedded bar 7 is a threaded steel bar, and the second embedded bar 8 is also a threaded steel bar.
The movable toothed plate 3 is connected to the bottom of the first prefabricated connecting part 1 through bolts, the fixed toothed plate 4 is connected to the bottom of the second prefabricated connecting part 2 through bolts, and the bolts are connected with corresponding embedded sleeves, and the movable toothed plate is specifically characterized in that: the bottom of the first prefabricated connecting piece 1 is provided with a first embedded sleeve 5, and the bottom of the second prefabricated connecting piece 2 is provided with a second embedded sleeve 6. The structures and specifications of the first embedded sleeve 5 and the second embedded sleeve 6 are generally the same, and only the installation positions are different. The bolt connected to the movable toothed plate 3 penetrates through the prefabricated connecting piece I1 and is connected with the embedded sleeve I5 through threads; and the bolt connected to the fixed toothed plate 4 penetrates through the prefabricated connecting piece II 2 and is connected with the embedded sleeve II 6 through threads.
Also be fixed connection between embedded sleeve and the corresponding prefabricated connecting piece, that is to say that embedded sleeve also plays the effect of pre-buried muscle to a certain extent, for the intensity of being connected between promotion embedded sleeve and the concrete, the embedded sleeve's of this embodiment surface is equipped with annular or protruding muscle.
In order to improve the connection strength between the second comb teeth and the movable toothed plate 3, the second comb teeth of the present embodiment include thin comb teeth 41 and thick comb teeth 42 that are alternately arranged, and the upper surfaces of the thin comb teeth 41 and the thick comb teeth 42 are flush with the upper surface of the fixed toothed plate 4; the two adjacent comb teeth one 31 are connected with the thin comb teeth 41 through the embedded block 32. The embedded blocks 32 are used for fixing and supporting the thin comb teeth 41, so that the thin comb teeth 41 are prevented from deforming and warping, and the quantity and distribution of the embedded blocks 32 can be reasonably adjusted according to the length of the thin comb teeth 41.
The first comb teeth 31 are provided with corresponding insert mounting grooves, the number of the insert mounting grooves is two, one insert mounting groove is located at the end part of the first comb teeth 31, and the other insert mounting groove is located in the middle of the first comb teeth 31. Wherein, the thick comb teeth 42 are also connected with the second embedded sleeve 6 through bolts. The method comprises the following steps: the thick comb teeth 42 are provided with corresponding through holes 421, and the through holes 421 are mounted inside the embedded sleeves 6 through countersunk screws.
Sliding support 321 is including embedding the rubber piece to the inside of abaculus 32, and the rubber piece is connected the face with the backing plate and still is equipped with the super wear-resisting sliding material of self-lubricating, and abaculus 32 upper surface is connected the face with thin broach 41 and also is equipped with the super wear-resisting sliding material of self-lubricating. Therefore, the sliding support 321 has certain elasticity, so that a certain floating distance can be reserved between the fixed toothed plate 4 and the movable toothed plate 3, and vertical displacement is realized.
The bottom of the embedded block 32 is further provided with a sliding support 321, a base plate 10 is further arranged between the thick comb teeth 42 and the second prefabricated connecting piece 2, the sliding support 321 is connected with the base plate 10, and when displacement occurs, the sliding support 321 can slide along the base plate 10. The backing plate 10 is typically a stainless steel plate. The backing plate connecting surface of the sliding support 321 is also provided with a self-lubricating super wear-resistant sliding material, and the lower surface of the thin comb teeth 41 is also provided with a stainless steel plate for reducing the friction force between the thin comb teeth 41 and the insert block 32.
In order to reduce the friction between the shoe 321 and the backing plate 10; the upper surface of the insert block 32 is also provided with a self-lubricating super wear-resistant sliding material for reducing the friction force between the insert block 32 and the stainless steel plate on the lower surface of the thin comb teeth 41.
The prefabricated connecting piece I1 and the prefabricated connecting piece II 2 can be poured at the end part in the pouring process of a beam end or an abutment, concrete curing is completed according to a standardized flow, and production quality and precision are guaranteed. Meanwhile, secondary construction of on-site grooving after bridge erection is not needed.
During installation, only the relative positions and elevations of the movable toothed plate 3 and the fixed toothed plate 4 need to be adjusted, and then the two are respectively fixed on the prefabricated connecting piece I1 and the prefabricated connecting piece II 2 through bolts. When needing to be changed or overhauld, only need loosen corresponding bolt take off the fishback can. Because concrete does not need to be poured on site, and wet joint connection is not adopted, the workload and the construction period of site construction can be greatly reduced.
In addition to the longitudinal displacement function, the insert 32 of the present embodiment is made of rubber, and has a certain elasticity, so that the entire telescopic device has a certain vertical displacement function. A certain gap error exists between the adjacent first comb teeth and the adjacent second comb teeth, so that the whole telescopic device has a certain transverse displacement function.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (10)
1. The comb plate assembly type telescopic device is characterized by comprising a movable tooth plate (3), a fixed tooth plate (4), a prefabricated connecting piece I (1) and a prefabricated connecting piece II (2) which are respectively prefabricated between two beam ends or between the beam ends and a bridge abutment, wherein the movable tooth plate (3) is provided with a comb tooth I (31), the fixed tooth plate (4) is provided with a comb tooth II, and the comb tooth I (31) and the comb tooth II are sequentially staggered;
the movable toothed plate (3) can be detachably connected to the first prefabricated connecting piece (1), and the fixed toothed plate (4) can be detachably connected to the second prefabricated connecting piece (2).
2. The comb-assembled extension and retraction device according to claim 1, wherein the first comb teeth (31) cross the gap between the beam ends or between the beam ends and the abutment and the second comb teeth do not cross the gap between the beam ends or between the beam ends and the abutment.
3. The comb plate fabricated retractor device of claim 1 wherein the prefabricated connecting piece one (1) is an L-shaped steel plate, and the side portion and the bottom portion are prefabricated at the beam end or the bridge abutment through a pre-embedded bar one (7);
the prefabricated connecting piece II (2) is also an L-shaped steel plate, and the side part and the bottom part of the prefabricated connecting piece II are prefabricated at the other beam end or the bridge abutment through a prefabricated bar II (8).
4. The comb plate fabricated retractor device of claim 3 wherein the movable toothed plate (3) is bolted to the bottom of the first prefabricated connector (1) and the fixed toothed plate (4) is bolted to the bottom of the second prefabricated connector (2).
5. The comb plate assembled type telescopic device according to claim 4, wherein a first embedded sleeve (5) is arranged at the bottom of the first prefabricated connecting piece (1), and a second embedded sleeve (6) is arranged at the bottom of the second prefabricated connecting piece (2);
bolts connected to the movable toothed plate (3) penetrate through the prefabricated connecting piece I (1) and are connected with the embedded sleeve I (5) through threads;
and the bolt connected to the fixed toothed plate (4) penetrates through the prefabricated connecting piece II (2) and is connected with the embedded sleeve II (6) through threads.
6. The comb plate assembled type telescopic device according to claim 5, wherein the outer surface of the embedded sleeve I (5) is provided with an annular groove or a convex rib; and the outer surface of the second embedded sleeve (6) is also provided with a ring groove or a convex rib.
7. The comb plate assembled type telescopic device according to claim 1, wherein the comb teeth two comprise thin comb teeth (41) and thick comb teeth (42) which are arranged at intervals, and the upper surfaces of the thin comb teeth (41) and the thick comb teeth (42) are flush with the upper surface of the fixed tooth plate (4);
thin comb teeth (41) are connected between two adjacent comb teeth I (31) through an insert block (32);
the thick comb teeth (42) are also connected with the second embedded sleeve (6) through bolts.
8. The comb plate assembled type telescopic device according to claim 7, wherein a sliding support (321) is further arranged at the bottom of the embedded block (32), a cushion plate (10) is further arranged between the thick comb teeth (42) and the second prefabricated connecting piece (2), and the sliding support (321) is connected with the cushion plate (10).
9. The comb plate fabricated retractor device of claim 8 wherein the sliding support (321) comprises a rubber block embedded inside the insert (32), the connection surface of the rubber block and the backing plate is further provided with a self-lubricating super wear-resistant sliding material, and the connection surface of the upper surface of the insert (32) and the thin comb teeth (41) is also provided with a self-lubricating super wear-resistant sliding material.
10. The comb plate assembly type telescopic device according to claim 8, wherein two ends of the backing plate (10) respectively extend to the root of the second comb teeth and the outer edge of the collecting groove (9), and the backing plate (10) is embedded at the bottom of the first comb teeth (31).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220431492.XU CN216919998U (en) | 2022-03-01 | 2022-03-01 | Comb plate assembled expansion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220431492.XU CN216919998U (en) | 2022-03-01 | 2022-03-01 | Comb plate assembled expansion device |
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| CN216919998U true CN216919998U (en) | 2022-07-08 |
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| CN202220431492.XU Active CN216919998U (en) | 2022-03-01 | 2022-03-01 | Comb plate assembled expansion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411543A (en) * | 2022-03-01 | 2022-04-29 | 江苏领跑梦设计研究有限公司 | Comb plate assembled expansion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411543A (en) * | 2022-03-01 | 2022-04-29 | 江苏领跑梦设计研究有限公司 | Comb plate assembled expansion 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. |