Pushing device of steel structure auxiliary beam buttress

Abstract

The utility model discloses a pushing device of a steel structure auxiliary beam buttress. The pushing device comprises two supporting seats, a guide assembly and a thrust driving assembly. The guide assembly comprises a sliding base plate, a steel strand, a sliding seat, a sliding ring buckle and a fixed ring buckle. The two ends of the sliding base plate are supported on the two supporting bases respectively. A sliding ring buckle is fixed on the sliding seat; and two ends of the steel strand are respectively fixed with the two supporting seats. The steel strand penetrates through the sliding ring buckle; and a fixing ring buckle is sleeved on the steel strand. And the relative position between the fixing ring buckle and the steel strand can be locked. A thrust driving assembly is mounted between the fixed ring buckle and the sliding ring buckle; the thrust driving assembly is used for driving the fixed ring buckle and the sliding ring buckle to move relatively. By providing the pushing device which can be temporarily assembled and used on site, the sectional rapid pushing operation of the steel structure auxiliary beam buttress can be realized, so that multiple sections of steel structure auxiliary beam buttresses can be rapidly pushed in place, and the construction time is effectively shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of jacking equipment, and in particular relates to a jacking device for a temporary beam buttress of a steel structure. Background Art

[0002] Underpass railway overpass projects are usually constructed using the jacking method; during the jacking period, the existing railway must be in normal operation. To ensure the safe operation of the existing railway, a temporary beam must be erected under the railway before the jacking construction; the temporary beam provides support for the railway during construction, thereby ensuring the safe operation of the railway during construction. The structural device that supports the railway is called a temporary beam pier. For the jacking of the temporary beam pier, the traditional jacking process is complicated and only relies on jacks and auxiliary frames for jacking. During jacking, deviation and inability to jack often occur. Summary of the invention

[0003] The utility model aims to provide a novel limit and guide automatic push-pushing integrated device.

[0004] The utility model provides a jacking device for a steel structure temporary beam buttress, comprising two support seats, a guide assembly and a thrust driving assembly. The guide assembly comprises a sliding base plate, a steel strand, a sliding base plate, a sliding ring buckle and a fixed ring buckle. The two ends of the sliding base plate are respectively supported on the two support seats.

[0005] The sliding seat is fixed with a sliding ring; the two ends of the steel strand are fixed to the two support seats respectively. The steel strand passes through the sliding ring; the steel strand is sleeved with a fixed ring. The relative position between the fixed ring and the steel strand can be locked. A thrust driving assembly is installed between the fixed ring and the sliding ring; the thrust driving assembly is used to drive the fixed ring and the sliding ring to move relative to each other.

[0006] Preferably, the support seat is formed by laying out a plurality of I-beams.

[0007] Preferably, the top surfaces of the two support seats are fixed with stranded wire fixing seats, and the ends of the steel strands are fixed to the stranded wire fixing seats on the support seats.

[0008] Preferably, there are a plurality of sliding seats; each sliding seat is arranged in sequence and spaced apart along the arrangement direction of the two supporting seats.

[0009] Preferably, the fixing ring comprises an annular fastening sleeve and a clamp. The annular fastening sleeve is made of elastic material; the annular fastening sleeve is placed on the steel strand; the clamp is placed on the outside of the annular fastening sleeve. The clamp can squeeze the annular fastening sleeve so that the annular fastening sleeve clamps the steel strand.

[0010] Preferably, the thrust drive assembly adopts a hydraulic tensioning through-type jack; the hydraulic tensioning through-type jack is sleeved on the steel strand, and the two ends thereof are respectively against the fixed ring buckle and the sliding ring buckle.

[0011] Preferably, the sliding ring buckle is U-shaped and is welded and fixed to the sliding seat. A plurality of threaded holes arranged in a circular shape are provided on the flange base.

[0012] Preferably, a flange base is fixed in the middle of the top surface of the sliding seat; there are two steel strands; the two steel strands are respectively arranged on both sides of the flange base.

[0013] Preferably, a slide groove is provided on the top surface of the sliding base plate. The length direction of the slide groove is arranged along the arrangement direction of the two support seats. The bottom of each sliding seat is provided with a guide protrusion; the guide protrusion is slidably connected with the slide groove on the sliding base plate.

[0014] Preferably, a plurality of mutually parallel slide grooves are provided on the top surface of the sliding base plate; a plurality of guide protrusions matching the slide grooves are provided on the bottom of the sliding seat.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model provides a jacking device that can be temporarily assembled on site, which can realize the segmented rapid jacking operation of the steel structure temporary beam pier, so that multiple sections of steel structure temporary beam piers can be quickly jacked into place, thereby effectively shortening the construction time.

[0017] 2. The utility model can effectively solve the offset and displacement phenomenon during jacking construction by fixing and positioning with steel strands, reduce the correction of jacking routes during construction, and shorten the construction time.

[0018] 3. The utility model uses I-beams to lay support seats to bear pressure, which can adapt to a variety of harsh working environments, such as soft soil foundations, silty soil and other harsh conditions that are not conducive to foundation work. In addition, the utility model is easy to disassemble and repair. The overall structure uses a combination of steel structure and environmentally friendly tetrafluoroethylene plates, which is convenient for secondary use and later manual maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the sliding seat in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the annular fastening sleeve of the fixed ring buckle in the utility model;

[0022] Figure 4It is a schematic diagram of the structure of the clamp for fixing the ring buckle in the utility model;

[0023] Figure 5 It is a schematic diagram of the working principle of the utility model. DETAILED DESCRIPTION

[0024] The utility model is further described below.

[0025] like Figure 1 As shown, a jacking device for a steel structure temporary beam pier includes two support seats 1, a guide assembly 2 and a thrust drive assembly 3. Both support seats 1 are obtained by laying I-beams. During operation, the two support seats 1 are arranged at intervals, and the culvert to be constructed is located between the opposite ends of the two support seats 1. The two ends of the guide assembly 2 are supported on the two support seats 1 respectively. The middle part of the guide assembly 2 is supported by the soil layer at the culvert.

[0026] like Figure 1 and Figure 2 As shown, the guide assembly 2 includes a sliding base 2-1, a steel strand 2-2, a strand fixing seat 2-3, a sliding seat 2-4, a sliding ring buckle 2-5 and a fixing ring buckle 2-6. The two ends of the bottom surface of the sliding base 2-1 are supported on two supporting seats 1 respectively. Two parallel sliding grooves are provided on the top surface of the sliding base 2-1. The length direction of the sliding groove is arranged along the arrangement direction of the two supporting seats 1. The bottoms of the two sliding seats 2-4 arranged at intervals are both provided with guide protrusions. The guide protrusions at the bottom of the sliding seat 2-4 are slidably connected to the sliding grooves on the sliding base 2-1.

[0027] A flange base 2-7 is fixed in the middle of the top surface of the sliding seat 2-4, and sliding ring buckles 2-5 are fixed at both ends. The sliding ring buckle 2-5 adopts an ear plate type connection structure, is U-shaped, and is welded and fixed to the sliding seat 2-4. The flange base 2-7 is provided with a plurality of high-strength threaded holes 2-8 arranged in a circular shape, and the hole diameter is M30; during the working process, the pushed temporary beam pier 4 is supported on the flange bases 2-7 of the two sliding seats 2-4 and fastened by bolts.

[0028] Two stranded wire fixing seats 2-3 are fixed to the top surfaces of the two support seats 1. One end of the two steel strands 2-2 is respectively fixed to the two stranded wire fixing seats 2-3 on one of the support seats 1; the other ends of the two steel strands 2-2 are respectively fixed to the two stranded wire fixing seats 2-3 on the other support seat 1. The two steel strands 2-2 are parallel to each other and are both arranged horizontally. The two steel strands 2-2 pass through the two sliding buckles 2-5 on the same sliding seat 2-4 respectively. Fixed buckles 2-6 are sleeved on the two steel strands 2-2. A locking structure is arranged between the fixed buckle 2-6 and the corresponding steel strand 2-2, so that the fixed buckle 2-6 can be locked at different positions of the steel strand 2-2.

[0029] The fixed ring buckle 2-6 is arranged on the side of the sliding seat 2-4 away from the jacking direction. The thrust drive assembly 3 is installed between the fixed ring buckle 2-6 and the adjacent sliding ring buckle 2-5, and is used to push the sliding ring buckle 2-5 to move, thereby driving the two sliding seats 2-4 and the temporary beam piers supported by them to slide. The thrust drive assembly 3 adopts a hydraulic tensioning through-type jack; the two hydraulic tensioning through-type jacks are respectively placed on the two steel strands 2-2, and the two ends are respectively against the fixed ring buckle 2-6 and the sliding ring buckle 2-5. During the jacking operation, the hydraulic tensioning through-type jack pushes the sliding ring to move along the steel strand 2-2 through its own telescopic movement when the fixed ring buckle 2-6 is locked.

[0030] By utilizing the locking and unlocking switching of the fixed ring buckle 2-6 on the steel strand 2-2 and coordinating the extension and shortening switching of the hydraulic tensioning through-type jack, the step-by-step jacking of the steel structure temporary beam pier on the steel strand can be achieved, thereby allowing the steel structure temporary beam pier to complete a lateral displacement exceeding the stroke of the hydraulic tensioning through-type jack.

[0031] In this embodiment, the sliding base plate 2-1 mainly plays the role of guiding and reducing friction. The weight of the temporary beam pier 4 is mainly transferred to the two support seats 1 through the steel strands 2-2 and the strand fixing seats 2-3 to achieve the support of the temporary beam pier 4.

[0032] In some embodiments, Figure 3 and Figure 4 As shown, the fixing ring buckle 2-6 includes an annular fastening sleeve 2-6-1 and a clamp 2-6-2. The annular fastening sleeve 2-6-1 is made of elastic material (such as rubber); the annular fastening sleeve 2-6-1 is sleeved on the steel strand 2-2; and the clamp 2-6-2 is sleeved on the outside of the annular fastening sleeve 2-6-1.

[0033] The clamp 2-6-2 can adjust the tightness of the annular fastening sleeve 2-6-1. When the clamp 2-6-2 is locked, an inward extrusion force is applied to the annular fastening sleeve 2-6-1, so that the inner wall of the annular fastening sleeve 2-6-1 is deformed and squeezes the steel strand 2-2, so that the fixing ring buckle 2-6 is fixed to the steel strand 2-2.

[0034] When the clamp 2-6-2 is loosened, the extrusion force is no longer applied to the annular fastening sleeve 2-6-1, so that the annular fastening sleeve 2-6-1 is restored and no longer squeezes the steel strand 2-2, so that the fixing ring buckle 2-6 can slide on the steel strand 2-2.

[0035] like Figure 5 As shown, the process of pushing the temporary beam pier based on the pushing device provided by the utility model is as follows:

[0036] Step 1: Pre-excavate the site of the existing railway underpass culvert construction, lay sand and gravel on both sides of the foundation for reinforcement, and then lay the support seat 1 (composed of I-beams) of the jacking device. Then weld the stranded wire fixing seat 2-3 on the support seat 1 and lay the sliding base plate 2-1 made of special tetrafluoroethylene material.

[0037] Step 2: Install the steel strand 2-2. First, fix the end of the steel strand 2-2 on the strand fixing seat 2-3. Put the hydraulic tension through-type jack on the steel strand 2-2. Then, fix the annular fastening sleeve 2-6-1 on the steel strand 2-2 using the clamp 2-6-2 to form a usable reaction wall. Then, pass the steel strand 2-2 through the sliding ring 2-5 of the sliding seat 2-4 to form a set of power jacking device.

[0038] Step 3: After assembling the temporary beam pier 4, use M30 high-strength bolts to fix it on the sliding seat 2-4, and then use the jack to push it. After reaching the jack stroke, loosen the clamp 2-6-2, push the annular fastening sleeve 2-6-1 and the jack forward, and carry out the pushing work of the next stroke.

[0039] Step 4: While the temporary beam pier 4 is being pushed into place, use a rail crane to lift one end from the pushing base, place it on the pre-buried pile, then fix it to the pile foundation and withdraw the pushing device.

Claims

1. A jacking device for a steel structure temporary beam buttress, comprising a thrust driving assembly (3); characterized in that: It also includes two support seats (1) and a guide assembly (2); the guide assembly (2) includes a sliding base plate (2-1), a steel strand (2-2), a sliding base plate (2-4), a sliding ring buckle (2-5) and a fixed ring buckle (2-6); the two ends of the sliding base plate (2-1) are respectively supported on the two support seats (1); A sliding buckle (2-5) is fixed on the sliding seat (2-4); two ends of the steel strand (2-2) are respectively fixed to two support seats (1); the steel strand (2-2) passes through the sliding buckle (2-5); a fixing buckle (2-6) is sleeved on the steel strand (2-2); the relative position between the fixing buckle (2-6) and the steel strand (2-2) can be locked; a thrust driving component (3) is installed between the fixing buckle (2-6) and the sliding buckle (2-5); the thrust driving component (3) is used to drive the fixing buckle (2-6) and the sliding buckle (2-5) to move relative to each other.

2. The jacking device for a steel structure temporary beam buttress according to claim 1 is characterized in that: The support seat (1) is formed by laying out a plurality of I-beams.

3. The jacking device for a steel structure temporary beam buttress according to claim 1 is characterized in that: A stranded wire fixing seat (2-3) is fixed to the top surface of each of the two support seats (1); and the end of the steel strand (2-2) is fixed to the stranded wire fixing seat (2-3) on the support seat (1).

4. The jacking device for a steel structure temporary beam buttress according to claim 1 is characterized in that: There are a plurality of sliding seats (2-4); each sliding seat (2-4) is arranged in sequence and at intervals along the arrangement direction of the two support seats (1).

5. The jacking device for a steel structure temporary beam buttress according to claim 1 is characterized in that: The fixing ring buckle (2-6) comprises an annular fastening sleeve (2-6-1) and a clamp (2-6-2); the annular fastening sleeve (2-6-1) is made of elastic material; the annular fastening sleeve (2-6-1) is sleeved on the steel strand (2-2); the clamp (2-6-2) is sleeved on the outside of the annular fastening sleeve (2-6-1); the clamp (2-6-2) can squeeze the annular fastening sleeve (2-6-1), so that the annular fastening sleeve (2-6-1) tightly clamps the steel strand (2-2).

6. The jacking device for a steel structure temporary beam buttress according to claim 1 is characterized in that: The thrust drive assembly (3) adopts a hydraulic tension through-type jack; the hydraulic tension through-type jack is sleeved on the steel strand (2-2), and the two ends thereof respectively abut against a fixed ring buckle (2-6) and a sliding ring buckle (2-5).

7. The jacking device for a steel structure temporary beam buttress according to claim 1 is characterized in that: The sliding ring buckle (2-5) is U-shaped and is fixed to the sliding seat (2-4) by welding; a plurality of threaded holes (2-8) arranged in a circular shape are provided on the flange base (2-7).

8. The jacking device for a steel structure temporary beam buttress according to claim 1 is characterized in that: A flange base (2-7) is fixed in the middle of the top surface of the sliding seat (2-4); there are two steel strands (2-2); the two steel strands (2-2) are respectively arranged on both sides of the flange base (2-7).

9. The jacking device for a steel structure temporary beam buttress according to claim 1 is characterized in that: A slide groove is provided on the top surface of the sliding base (2-1); the length direction of the slide groove is arranged along the arrangement direction of the two support seats (1); the bottom of the sliding seats (2-4) are provided with guide protrusions; the guide protrusions are slidably connected to the slide groove on the sliding base (2-1).

10. The jacking device for a steel structure temporary beam buttress according to claim 9 is characterized in that: The top surface of the sliding base plate (2-1) is provided with a plurality of sliding grooves parallel to each other; the bottom of the sliding seat (2-4) is provided with a plurality of guide protrusions matching the sliding grooves.

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