Device for adjusting distance between upper chords of steel truss girder

Abstract

The utility model relates to the technical field of bridges, in particular to a device for adjusting the distance between upper chords of a steel truss girder, which comprises a transverse supporting rod piece, a group of common check blocks and a counter-force seat check block, the common check blocks and the counter-force seat check block are respectively arranged at two ends of the transverse supporting rod piece, jack clamping grooves are arranged on two sides of the counter-force seat check block, and the counter-force seat check block is arranged in the jack clamping grooves. The jack clamping grooves in the two counter-force seat check blocks are oppositely arranged, and jacks can be placed in the jack clamping grooves. The common check block and the counter-force seat check block on the transverse supporting rod piece are respectively clamped on the two adjacent upper chords, the jack is arranged on the counter-force seat check block, and the jack acts on the device, so that the distance between the upper chords is quickly adjusted, a cross beam or a bridge deck can be smoothly mounted in place, and the working efficiency is improved. Therefore, the construction efficiency and the engineering quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge technical field, especially relate to a kind of adjusting device for steel truss beam upper chord spacing. BACKGROUND

[0002] Steel truss beam bridge refers to the bridge with steel truss beam as the main load-bearing component of superstructure.Steel truss beam is connected by numerous members through nodes, which are combined into truss structure according to certain rules to bear the load on the bridge and transfer it to piers and foundation.

[0003] However, in the process of steel truss beam bridge erection, the spacing between two upper chords is often deviated from the theoretical design value due to the influence of manufacturing accuracy, structure weight, installation accuracy and other factors.After installation, the spacing between two upper chords of steel truss beam is often deviated from the theoretical design value.Steel truss beam bridge generally adopts bolted or bolted-welded connection method.When the spacing is too small, the cross beam or bridge deck slab between the upper chords will be difficult to insert into place;on the contrary, if the spacing is too large, the bolted joint between the cross beam or bridge deck slab and the upper chord will face the difficulty of inserting punch pin and bolt.

[0004] Based on the above technical problems, it is necessary to design an adjusting device for steel truss beam upper chord spacing to quickly and effectively adjust the spacing of steel truss beam upper chord and ensure the smooth installation of cross beam or bridge deck slab. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problems of the prior art and provides an adjusting device for steel truss beam upper chord spacing, which is simple in structure, easy to use, can quickly and effectively adjust the spacing of steel truss beam upper chord, ensure the smooth installation of cross beam or bridge deck slab, and improve construction efficiency and engineering quality.

[0006] Technical scheme: In order to achieve the above purpose, the utility model provides an adjusting device for steel truss beam upper chord spacing, which comprises a cross brace member, a set of ordinary stop blocks and counterforce seat stop blocks, the ordinary stop blocks and counterforce seat stop blocks are respectively arranged at both ends of the cross brace member, the two sides of the counterforce seat stop block are provided with jack clamping grooves, the jack clamping grooves on the two counterforce seat stop blocks are oppositely arranged, and the jack clamping grooves can accommodate jacks.

[0007] The utility model realizes quick adjustment of the spacing of upper chords by clamping ordinary stop blocks and counterforce seat stop blocks on adjacent two upper chords, setting jacks on the counterforce seat stop blocks and applying jacks on the device.

[0008] Further, the counterforce seat stopper comprises a U-shaped plate, a vertical stiffener plate, a horizontal stiffener plate and a connecting reinforcing box, the jack clamping groove is arranged on one side of the U-shaped plate, the horizontal stiffener plate is arranged on the other side of the U-shaped plate, the vertical stiffener plate is vertically arranged on the bottom surface of the horizontal stiffener plate and connected with the U-shaped plate, and the connecting reinforcing box is arranged on the top surface of the horizontal stiffener plate and connected with the U-shaped plate. The connecting reinforcing box is used for enhancing the connecting strength between the counterforce seat stopper and the horizontal bracing rod.

[0009] Further, the connecting reinforcing box comprises a group of stiffener plates and cover plates, the stiffener plates, the cover plates and the horizontal stiffener plate form an open box body, the open end of the box body is connected with the side surface of the horizontal bracing rod, and the notch of the U-shaped plate is connected with the horizontal bracing rod.

[0010] Further, the jack clamping groove comprises a bottom plate and a stop plate, the bottom plate is horizontally arranged on the lower edge of the U-shaped plate, and the stop plate is vertically arranged on the bottom plate to form the clamping groove. The jack can be placed in the clamping groove, one end of the jack is in contact with the side surface of the upper chord rod, and the other end of the jack is in contact with the U-shaped plate.

[0011] Further, the common stopper comprises a group of rib plates and face plates, one side of the rib plate is arranged on one side of the face plate, and the other side is connected with the bottom surface of the horizontal bracing rod, and the face plates on the two common stoppers are oppositely arranged.

[0012] Further, the upper surface of the horizontal bracing rod is respectively provided with a single lifting lug and a double lifting lug at two ends. The lifting lug is used for hoisting the horizontal bracing rod to the upper chord rod.

[0013] Further, the distance between the common stoppers is greater than the width of the chord rod. The distance is slightly wider than the width of the upper chord rod, so that the upper chord rod can be easily embedded.

[0014] The above technical scheme can be seen that, compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a kind of adjusting device for steel truss upper chord spacing, simple structure, when using, only the device is clamped on the adjacent two upper chord, by installing jack on counterforce seat stopper and exerting pressure, the spacing of steel truss upper chord can be quickly and effectively adjusted, ensure that beam or bridge deck can be smoothly installed in place, so as to improve construction efficiency and engineering quality. DRAWINGS

[0016] Figure 1 It is a kind of adjusting device for steel truss upper chord spacing of the structure schematic view of the utility model

[0017] Figure 2 It is the structure schematic view of counterforce seat stopper of the utility model;

[0018] Figure 3This is a top view of the ordinary stop block described in this utility model;

[0019] Figure 4 This is a schematic diagram illustrating the use of the device for adjusting the spacing of the upper chord members of a steel truss, as described in this utility model.

[0020] In the diagram: 1-cross brace, 11-single lifting lug, 12-double lifting lug;

[0021] 2-Ordinary stop block, 21-Firming plate, 22-Panel;

[0022] 3-Reaction seat block, 31-Jack slot, 311-Base plate, 312-Baffle, 32-U-shaped plate, 33-Vertical stiffening plate, 34-Horizontal stiffening plate, 35-Connecting reinforcing box, 351-Cover plate;

[0023] 4-Top chord. Detailed Implementation

[0024] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0025] like Figures 1-3 As shown, an adjustment device for the spacing of the upper chord members of a steel truss includes a cross brace 1, a set of ordinary blocks 2 and reaction blocks 3. The ordinary blocks 2 and reaction blocks 3 are respectively located at both ends of the cross brace 1. The reaction blocks 3 have jack slots 31 on both sides. The jack slots 31 on the two reaction blocks 3 are arranged opposite each other, and jacks can be placed in the jack slots 31.

[0026] For details, please refer to Figure 2 The reaction seat block 3 includes a U-shaped plate 32, a vertical stiffening plate 33, a horizontal stiffening plate 34, and a connecting reinforcement box 35. The jack slot 31 is located on one side of the U-shaped plate 32, the horizontal stiffening plate 34 is located on the other side of the U-shaped plate 32, the vertical stiffening plate 33 is vertically located on the bottom surface of the horizontal stiffening plate 34 and connected to the U-shaped plate 32, and the connecting reinforcement box 35 is located on the top surface of the horizontal stiffening plate 34 and connected to the U-shaped plate 32.

[0027] In a further optimized scheme, the connecting reinforcement box 35 includes a set of stiffening plates and a cover plate 351. The stiffening plates, cover plate 351 and transverse stiffening plate 34 form a box body with one open side. The open end of the box body is connected to the side of the cross brace 1, and the notch of the U-shaped plate 32 is connected to the cross brace 1.

[0028] Specifically, the jack slot 31 includes a base plate 311 and a baffle 312. The base plate 311 is horizontally disposed on the lower edge of the U-shaped plate 32, and the baffle 312 is vertically disposed on the base plate 311 to form a slot.

[0029] In addition, as shown in Figure 3 The common block 2 includes a set of webs 21 and panels 22, one side of the webs 21 is arranged on one side of the panels 22, and the other side is connected with the bottom surface of the cross brace 1, and the panels 22 on the two common blocks 2 are oppositely arranged.

[0030] The upper surface of the cross brace 1 is provided with a single lifting lug 11 and a double lifting lug 12 at two ends, respectively.

[0031] In addition, the spacing between the common blocks 2 is greater than the width of the chord, and the spacing between the reaction block 3 is determined according to the width of the upper chord and the length of the jack.

[0032] The adjustment device for the spacing of the upper chord of the steel truss provided in the embodiment is used as shown in Figure 4 After the installation of the upper chord 4 of the steel truss is completed, the adjustment cross brace device is hoisted by the hoisting equipment to make the common block 2 and the reaction block 3 clamp into the end of the upper chord, the spacing between the upper chords 4 is accurately measured by using a tape measure, if the measured spacing is less than the theoretical design value, then a jack is arranged on the two sides of the reaction block 3 on the inner side of the upper chord 4, and the two jacks are simultaneously lifted to widen the spacing of the upper chords 4 to the theoretical design value. On the contrary, if the measured spacing is greater than the theoretical design value, then the jack is arranged at the reaction block 3 on the outer side of the upper chord 4 to adjust. After the adjustment of the spacing of the upper chord 4 is completed, the cross beam or the bridge deck plate can be smoothly installed.

[0033] The device successfully solves the problem of the spacing deviation of the upper chord of the steel truss, effectively avoids the trouble of the subsequent installation of the member in place, and ensures the smooth construction. The device is designed ingeniously, convenient to assemble and disassemble, and the operation process is simple and clear, and the adjustment work of the spacing of the upper chord can be easily completed in only 3 to 5 minutes, so that the hoisting operation efficiency of the cross beam and the bridge deck plate is significantly improved.

[0034] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements can be made without departing from the principle of the utility model, and these improvements should also be regarded as the protection range of the utility model.

Claims

1. An adjustment device for the spacing of the top chords of a steel truss, characterized in that Including cross bracing bar (1), a group of ordinary block (2) and counterforce seat block (3), ordinary block (2) and counterforce seat block (3) are respectively arranged in both ends of cross bracing bar (1), both sides of counterforce seat block (3) are equipped with jack clamping groove (31), the jack clamping groove (31) on two counterforce seat blocks (3) is oppositely arranged, the jack clamping groove (31) can be placed in the jack.

2. A device for adjusting the spacing between the top chords of a steel truss according to claim 1, characterized in that, The counterforce seat block (3) includes a U-shaped plate (32), a vertical stiffener plate (33), a horizontal stiffener plate (34), a connecting reinforcing box (35), the jack clamping groove (31) is arranged on one side of the U-shaped plate (32), the horizontal stiffener plate (34) is arranged on the other side of the U-shaped plate (32), the vertical stiffener plate (33) is vertically arranged on the bottom surface of the horizontal stiffener plate (34) and connected with the U-shaped plate (32), and the connecting reinforcing box (35) is arranged on the top surface of the horizontal stiffener plate (34) and connected with the U-shaped plate (32).

3. A device for adjusting the spacing between the top chords of a steel truss according to claim 2, characterized in that, The connecting reinforcing box (35) includes a group of stiffener plates and cover plates (351), the stiffener plates, cover plates (351) and horizontal stiffener plate (34) form an open box body, the open end of the box body is connected with the side surface of the cross bracing bar (1), and the gap of the U-shaped plate (32) is connected with the cross bracing bar (1).

4. A device for adjusting the spacing between the top chords of a steel truss according to claim 3, characterized in that, The jack clamping groove (31) includes a bottom plate (311) and a baffle (312), the bottom plate (311) is horizontally arranged on the lower edge of the U-shaped plate (32), and the baffle (312) is vertically arranged on the bottom plate (311) to form a clamping groove.

5. The device for adjusting the spacing between the top chords of a steel truss beam according to claim 1, wherein, The ordinary block (2) includes a group of rib plates (21) and face plates (22), one side of the rib plate (21) is arranged on one side of the face plate (22), and the other side is connected with the bottom surface of the cross bracing bar (1), and the face plates (22) on the two ordinary blocks (2) are oppositely arranged.

6. A device for adjusting the spacing between the top chords of a steel truss according to claim 1, characterized in that, Single lifting lugs (11) and double lifting lugs (12) are respectively arranged at both ends of the upper surface of the cross bracing bar (1).

7. The device for adjusting the spacing between the top chords of a steel truss beam according to claim 1, wherein, The distance between the ordinary blocks (2) is greater than the width of the chord bar.

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