CN212477453U - Bridge line type adjusting device - Google Patents

Abstract

The utility model relates to the field of bridge construction, in particular to a bridge linear adjusting device, which comprises a jack, a counter-force seat, a sliding module and a cushion block; the lifting jacks comprise at least one first lifting jack and at least four second lifting jacks; the cushion blocks comprise a steel truss girder main cushion block and a jack main cushion block; the reaction seat comprises four groups of reaction seats. The utility model discloses a counter-force seat overcomes the vertical back of lifting up of bridge, and the produced frictional force of lateral displacement makes the whole displacement of bridge, reaches the purpose of bridge erection in-process line type adjustment. The utility model discloses saved the input of materials such as a large amount of temporary stand, cable, pre-buried counter-force device, equipment under the prerequisite of guaranteeing safety, saved a large amount of costs for the construction progress.

Description

Bridge line type adjusting device

Technical Field

The utility model belongs to the technical field of bridge engineering construction, involve bridge building construction field, specifically be a bridge line type adjusting device.

Background

From the beginning of reform development, the economic strength and comprehensive national strength of China are increased unprecedentedly, and meanwhile, more brilliant achievements are created in the aspects of infrastructure construction, scientific research and design of China, wherein China rises rapidly in the aspect of bridge construction, and in recent years, highway bridges of China are increased at the speed of 2.7 ten thousand seats per year on average. By the end of 2015, national highway bridges reach 77.9 thousands of seats, and become the first bridge major country in the world. Nowadays, bridge construction in China is not limited to aspects of functionality, safety, economy and the like, but develops towards aspects of larger span, greater difficulty, more novelty, beautiful shape and the like.

In the bridge erection construction process, corresponding linear adjustment is often required to be carried out on an erected bridge, in the conventional bridge linear adjustment mode, a chain block is often adopted for linear adjustment of a bridge with smaller tonnage, and an embedded counter-force retaining wall is matched with a jack for pushing; for a bridge with larger tonnage, temporary supports are erected, large-scale machinery is used for assisting in dragging or pushing, and the linear control of a sling tower is assisted.

The problems of high difficulty of linear control technology, need of large-scale construction equipment, large investment of construction equipment, high construction risk and slow construction progress exist in the construction of the above modes.

Consequently, make under the safe prerequisite of a section assurance, can be more economic, convenient bridge erection line type's adjusting device, satisfy on-the-spot line type adjustment needs and seem especially urgent, this also does the utility model provides favorable enterprise's demand and practical background.

Disclosure of Invention

The utility model discloses a need to drop into the main equipment among the solution present bridge line type adjustment mode and cause the technical problem that construction cycle is long, the construction degree of difficulty is big, provide a bridge line type adjusting device.

The utility model discloses an adopt following technical scheme to realize: a bridge linear adjusting device comprises four reaction seats arranged on the upper surface of a bridge pier and located in four directions, a sliding module is arranged between the reaction seats, at least one first jack used for jacking the bridge is arranged on the sliding module, and at least one second jack matched with the reaction seats is horizontally arranged on the inner side surface of each reaction seat; the movable rod of the second jack faces the first jack from four directions.

The bridge linear adjusting device adopts a mode that a jack transversely or longitudinally jacks up to produce a longitudinal or transverse adjusting effect on the bridge.

The bridge linear adjusting device generally adopts two groups; the linear adjustment operation should be performed synchronously; the first jack jacks up the bridge firstly, then thrust is applied to the first jack respectively through the second jacks located in the four directions, the first jack slides on the sliding module, accurate adjustment of the position of the first jack is achieved, and then linear adjustment of the position of the bridge is achieved. Two groups of hydraulic stations are adopted to respectively control the jacks on two sides of the pier.

In the device, a sliding module is additionally arranged between the jack and the reaction seat, so that the transverse friction force in the linear adjustment process is reduced.

At least one third jack which is used for jacking the bridge and is used for reversing with the first jack is arranged on the periphery of the reaction seat.

The third jack is located the reaction seat periphery, and the mutual alternative use of first jack all is used for the jack-up to the bridge, and wherein, peripheral jack is responsible for alone lifting up except participating in whole jacking in the bridge jack-up accommodation process, makes inside jack come to nothing, adjusts the effect of inside pad height of copying.

A bridge line type adjusting device can also adopt following technical scheme to realize: a bridge linear adjusting device comprises four reaction seats arranged on the upper surface of a bridge pier and located in four directions, wherein a sliding module is arranged between the reaction seats, a movable base is arranged on the sliding module, and two first jacks are fixed on the movable base; the two first jacks all adopt three-way jacks, the vertical movable rods of the two three-way jacks are used for jacking the bridge, and the other four horizontally-arranged movable rods of the two three-way jacks respectively face the four counter-force seats.

Two first jacks all adopt three-way jacks, and the adjustment to self position just can be realized through applying the effort to four counter-force seats to first jack like this.

Among the devices, the bridge linear adjusting device can be increased in number as needed.

The utility model discloses a device, reduced the bridge and faced pre-buried barricade before the line type adjustment, temporary support's setting, avoided a large amount of manpowers, material, mechanical equipment's input, avoided occuping of time and space, save the cost for the construction progress. The device is simple and convenient to install, potential safety hazards are reduced, and construction difficulty is reduced.

Drawings

Fig. 1 is a front view of the installation structure of the present invention.

Fig. 2 is a side view of the mounting structure of the present invention.

1-counterforce seat, 2-sliding module, 3-bridge, 4-first jack, 5-second jack, 6-third jack, 7-cushion block, 8-jack base.

Detailed Description

A bridge linear adjusting device comprises four reaction seats 1 which are arranged on the upper surface of a pier and located in four directions, a sliding module 2 is arranged between the reaction seats 1, at least one first jack 4 used for jacking a bridge 3 is arranged on the sliding module 2, and at least one second jack 5 matched with the reaction seats 1 is horizontally arranged on the inner side surface of each reaction seat 1; the movable rod of the second jack 5 faces the first jack 4 (against its base) from four directions.

A cushion block 7 is arranged between the top of the movable rod of the first jack 4 and the bridge 3.

When the number of the first jacks 4 is two or more, a bottom plate is placed on the sliding module 2; the first jack 4 is placed on the bottom plate; a cushion block is also arranged between the movable rod of the second jack 5 and the bottom plate. The second jack supports the bottom plate to adjust the position of the first jack.

The sliding module 2 adopts a tetrafluoroethylene plate.

The counter-force seat 1 comprises a vertical plate and a horizontal plate for supporting the vertical plate; of four reaction seats 1

The horizontal plates are mutually butted to form a platform (four horizontal plates can be made into a whole, and four vertical plates are positioned at four directions of the flat plate/platform), and the sliding module 2 is placed on the platform.

The first jack and the third jack adopt 300t jacks, and the second jack adopts 50t jacks.

A bridge linear adjusting device comprises four reaction seats 1 which are arranged on the upper surface of a bridge pier and located in four directions, a sliding module 2 is arranged between the reaction seats 1, a movable base is arranged on the sliding module 2, and two first jacks 4 are fixed on the movable base; the two first jacks 4 are three-way jacks, the vertical movable rods of the two three-way jacks are used for jacking the bridge 3, and the other four horizontally-arranged movable rods of the two three-way jacks respectively face the four counter-force seats 1.

Referring to fig. 1 to 2, the present invention provides a bridge line type adjusting device and method. In fig. 1, it can be seen that the first and second jacks are both located between the reaction seats (on the horizontal plate of the reaction seats), the third jack is located at the periphery of the reaction seats, and the first and third jacks are used for jacking the bridge and are inverted to each other for use, so that the position of the first jack can be finely adjusted.

In fig. 2, it can be seen that in the set of bridge linear adjustment devices, there are two first and second jacks; the number of the second jacks is 8, and two jacks are arranged in each direction, so that the force application is uniform. When the device is applied specifically, the device can be operated synchronously.

The first jack and the second jack are placed on the counter-force seat (on the horizontal plate of the counter-force seat); a sliding module is arranged between the jack and the counter-force seat; the counterforce seat is placed on the pier top and is not fixed with the pier top; after the counter-force seat overcomes the vertical jacking of the bridge, the friction force generated by the transverse displacement enables the whole bridge to displace, and the purpose of linear adjustment in the bridge erection process is achieved.

The utility model discloses a counter-force seat overcomes the vertical back of lifting up of bridge, and the produced frictional force of lateral displacement makes the whole displacement of bridge, reaches the purpose of bridge erection in-process line type adjustment. The utility model discloses saved the input of materials such as a large amount of temporary stand, cable, pre-buried counter-force device, equipment under the prerequisite of guaranteeing safety, saved a large amount of costs for the construction progress.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description, which is fully applicable in all kinds of fields of the invention where appropriate, and further modifications may readily be effected by those skilled in the art, the invention thus not being limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

The embodiment of the method is to newly build a Guangzhou south Shagang railway NSGZQ-5 standard, cross flood bridge and drainage road steel truss flexible arch grand bridge engineering, wherein a full bridge steel truss weighs 2.2 ten thousand tons, has the length of 998m, and is adjusted to be 6cm in the linear adjustment process of a main bridge steel truss, and the adjustment precision reaches 2 cm. Because of the construction precision requirement is high, and the bridge body is huge, and the influence of expending with heat and contracting with cold is big. According to the research and the determination, a linear adjusting device in the bridge erecting process is adopted, and a first jack and a second jack are placed on a counter-force seat by the linear adjusting device; a sliding module is arranged between the first jack and the counter-force seat; the counterforce seat is placed on the pier top; after the counter-force seat overcomes the vertical jacking of the bridge, the friction force generated by the transverse displacement enables the whole bridge to displace, and the purpose of linear adjustment in the bridge erection process is achieved.

Adopt the utility model discloses, do not have any pre-buried and equipment to drop into, only adopt under the condition of constructor 10 people, whole line type adjustment process is 2 hours when totaling, and the work progress safety is rapid.

Claims (8)

1. A bridge linear adjusting device is characterized by comprising four reaction seats (1) which are arranged on the upper surface of a pier and located in four directions, wherein a sliding module (2) is arranged between the reaction seats (1), at least one first jack (4) used for jacking a bridge (3) is arranged on the sliding module (2), and at least one second jack (5) matched with the reaction seats (1) is horizontally arranged on the inner side surface of each reaction seat (1); the movable rod of the second jack (5) faces the first jack (4) from four directions.

2. A bridge linear adjustment device according to claim 1, characterized in that at least one third jack (6) is arranged around the counterforce seat (1) for lifting the bridge (3) and reversing the first jack (4).

3. A bridge linear adjustment device according to claim 2, characterized in that a spacer (7) is arranged between the top of the movable rod of the first jack (4) and the bridge (3).

4. A bridge linear adjusting device according to claim 3, characterized in that when the number of the first jacks (4) is two or more, the sliding module (2) is provided with a bottom plate; the first jack (4) is placed on the bottom plate; a cushion block is also arranged between the movable rod of the second jack (5) and the bottom plate.

5. A bridge linear adjustment device according to any one of claims 1 to 4, characterized in that the sliding module (2) is made of tetrafluoroethylene sheet.

6. A bridge linear adjustment device according to any one of claims 1 to 4, wherein the reaction seat (1) comprises a vertical plate and a horizontal plate for supporting the vertical plate; the horizontal plates of the four reaction force seats (1) are mutually butted to form a platform, and the sliding module (2) is placed on the platform.

7. A bridge linear adjustment device according to any one of claims 2 to 4, wherein the first and third jacks are 300t jacks, and the second jack (5) is 50t jack.

8. A bridge linear adjusting device is characterized by comprising four reaction seats (1) which are arranged on the upper surface of a bridge pier and located in four directions, wherein a sliding module (2) is arranged between the reaction seats (1), a movable base is arranged on the sliding module (2), and two first jacks (4) are fixed on the movable base; three-way jacks are adopted in the two first jacks (4), the vertical movable rods of the two three-way jacks are used for jacking the bridge (3), and the other four horizontally-arranged movable rods of the two three-way jacks respectively face the four counter-force seats (1).

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