Box girder shear bar positioning device and box girder shear bar positioning method thereof

Abstract

The application discloses a box girder shear bar positioning device and a box girder shear bar positioning method, and belongs to the technical field of box girder construction. The device comprises walking tracks located on both sides of the transverse direction of the box girder, the walking tracks extend along the longitudinal direction of the box girder and are fixed on a jig frame, a walking trolley is arranged on the walking tracks, the walking trolley crosses the box girder along the transverse direction of the box girder, a plurality of positioning bars are installed on the walking trolley, the plurality of positioning bars are arranged along the transverse direction of the box girder according to the design laying positions of the shear bars, the axis of the positioning bars is parallel to the longitudinal direction of the box girder, the positioning bars comprise calibration sections used for comparing with the positions of the shear bars, and the calibration sections extend out of the walking trolley and are arranged in a suspended mode. The method comprises the following steps: the walking trolley is moved from one end of the box girder to the other end, the already laid shear bars are compared with the calibration sections of the positioning bars during the movement, and adjustment is conducted to ensure that the shear bars are linear and straight.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of box girder construction, in particular to a box girder shear reinforcement positioning device and a box girder shear reinforcement positioning method thereof. BACKGROUND

[0002] In the process of building a box girder, when binding the shear reinforcement of the top plate of the box girder, a line is usually pulled manually at both ends of the beam body, and the shear reinforcement is bound along the straight line in the position of the reinforcement cage. However, the line pulled at both ends is prone to drooping or breaking during the process of binding the shear reinforcement, resulting in unevenness of the overall line shape, and finally causing deviations in the height and left-right position of the shear reinforcement, which affects the qualification of the box girder. At present, the improvement of shear reinforcement positioning mainly focuses on height positioning improvement. For example, the positioning device and positioning method disclosed in patent No. 202121087939.8, entitled "Box girder top plate reinforcement mesh shear reinforcement positioning vehicle", include a track laid on a bed frame, a shear reinforcement positioning vehicle moving on the track, and at least two parallel longitudinal reinforcement limiting plates between the tracks. Steel reinforcement clamping grooves are provided on the longitudinal reinforcement limiting plates, the distribution reinforcement is installed in the steel reinforcement clamping grooves, and then the shear reinforcement is bound on the distribution reinforcement. The groove depth of the steel reinforcement clamping groove determines the elevation of the shear reinforcement, thereby solving the problem of inaccurate shear reinforcement height. However, neither the current technology nor the above-mentioned patent has realized how to improve the positioning in the horizontal direction of the shear reinforcement. SUMMARY

[0003] The purpose of the present application is to solve the above technical problems, and to provide a box girder shear reinforcement positioning device and a box girder shear reinforcement positioning method thereof. The positioning reinforcement of the walking trolley can be adjusted and calibrated while walking on the shear reinforcement of the box girder, ensuring the straightness of the shear reinforcement line.

[0004] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application discloses a box girder shear reinforcement positioning device, which comprises walking tracks located on both sides of the transverse direction of the box girder. The walking tracks extend along the longitudinal direction of the box girder and are fixed on the bed frame. The walking tracks are provided with walking trolleys that can move by themselves. The walking trolleys cross the box girder along the transverse direction of the box girder. The walking trolleys are installed with a plurality of positioning reinforcements. The positioning reinforcements are arranged along the transverse direction of the box girder according to the design of the shear reinforcement laying position. The axis of the positioning reinforcement is parallel to the longitudinal direction of the box girder. The positioning reinforcement comprises a calibration section for comparing with the position of the shear reinforcement laid on the box girder. The calibration section extends out of the walking trolley and is suspended.

[0005] Preferably, positioning longitudinal plates are arranged between the walking tracks at intervals along the transverse direction of the box girder, the positioning longitudinal plates extend along the longitudinal direction of the box girder and are fixed on the cradle, the top surface of the positioning longitudinal plates is provided with a plurality of steel bar clamping grooves for placing distribution bars, the steel bar clamping grooves are arranged at intervals along the longitudinal direction of the box girder, the intervals of the steel bar clamping grooves are consistent with the preset intervals of the distribution bars, and the groove depths of the steel bar clamping grooves are consistent with the preset elevations of the distribution bars.

[0006] Preferably, the positioning bars are fixedly connected to the end surface of the walking trolley in the direction opposite to the moving direction.

[0007] Preferably, the walking trolley comprises a horizontally arranged steel plate base, and the bottom of the steel plate base is provided with walking wheels for walking on the walking tracks and a driving mechanism for driving the walking wheels.

[0008] Preferably, the driving mechanism comprises a driving motor connected with the walking wheels.

[0009] Preferably, the end surface of the steel plate base in the direction opposite to the moving direction is provided with a sliding groove, the positioning bars are slidingly connected in the sliding groove through sliding blocks, the steel plate base is provided with a plurality of positioning bolt holes arranged at intervals along the transverse direction of the box girder, and the sliding blocks are provided with locking bolt holes for being bolted with the positioning bolt holes.

[0010] Preferably, the cradle is provided with the walking tracks of different intervals.

[0011] Preferably, the walking tracks are mainly composed of angle steels or U-shaped steels.

[0012] Also disclosed is a box girder shear bar positioning method using the box girder shear bar positioning device, which comprises the steps of calibrating a shear bar laying position: driving the walking trolley to move from one end of the box girder to the other end, comparing the shear bar that has been laid on the box girder with the calibration section of the positioning bar during the movement, temporarily stopping the walking trolley when there is a position that does not coincide in the vertical direction between the shear bar and the calibration section, adjusting the position of the shear bar until it coincides with the calibration section in the vertical direction, and then starting the walking trolley again and repeating the above process.

[0013] Preferably, before the step of calibrating the shear bar laying position, the method further comprises the step of calibrating a shear bar height position: installing the distribution bar in the steel bar clamping groove of the positioning longitudinal plate, and then laying the shear bar on the distribution bar.

[0014] The present application has the following technical effects relative to the prior art:

[0015] 1. The application uses good effect, according to the positioning rib of walking trolley and the shear reinforcement on the box girder, the calibration can be quickly and accurately, the measurement and line laying time of manual positioning installation is saved, it can be used with the installation, greatly saves manpower and material resources, the box girder shear reinforcement positioning installation efficiency is improved, the device can be recycled, avoids the waste of materials, the device principle is simple, convenient to install, at the same time, the device avoids the phenomenon that the human tramples on the reinforcement and causes disturbance to the box girder top plate reinforcement, the shear reinforcement is installed, the linear is straight, the horizontal direction is accurately positioned, the reinforcement skeleton quality is guaranteed, the digital instrument is not needed by using the application, the operation is simple, and the cost is low.

[0016] 2. The application utilizes the reinforcement clamping groove on the positioning longitudinal plate, utilizes the groove depth to position the height of the distribution reinforcement, and then the height of the shear reinforcement is accurately positioned through the distribution reinforcement.

[0017] 3. In the application, the position of the positioning rib is adjusted through the sliding groove and the sliding block, so that the walking trolley can be repeatedly used, and can be used for positioning shear reinforcement with different intervals next time. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following only constitute some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0019] Figure 1 It is a front view of the box girder shear reinforcement positioning device.

[0020] Figure 2 It is a partial enlarged view of Figure 1

[0021] Figure 3 It is a side view of the box girder shear reinforcement positioning device.

[0022] Figure 4 It is a partial enlarged view of Figure 3

[0023] Figure 5 It is a top view of the box girder shear reinforcement positioning device.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the walking trolley.

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the sliding block.

[0026] ​​Explanation of reference numerals in the attached drawings: 1. Frame; 2. Traveling track; 3. Traveling trolley; 4. Positioning rib; 5. Positioning longitudinal plate; 6. Rebar positioning groove; 7. Steel plate base; 8. Traveling wheel; 9. Angle steel; 10. U-shaped steel; 11. Slide groove; 12. Sliding block; 13. Positioning bolt hole; 14. Locking bolt hole; 15. Distribution rib; 16. Insertion hole. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] This embodiment provides a box girder shear reinforcement positioning device, such as... Figures 1 to 7 As shown, the system includes a traveling track 2 fixed to the frame 1. The traveling track 2 is positioned on both sides of the box girder along its transverse direction and extends along its longitudinal direction, meaning its extension direction is parallel to the longitudinal direction of the box girder. A self-moving trolley 3 is mounted on the traveling track 2, spanning the box girder along its transverse direction and moving longitudinally along the box girder via the traveling track 2. Several positioning reinforcement bars 4 are installed on the trolley 3, arranged transversely along the box girder according to the shear reinforcement design. The axis of the positioning reinforcement bars 4 is parallel to the longitudinal direction of the box girder, and each positioning reinforcement bar 4 includes a calibration section that extends out of the trolley 3 and is suspended in the air. By comparing the shear bars already laid on the calibration section and the box girder one by one, it can be determined whether there is a left or right deviation in the horizontal direction of the shear bars, and then timely adjustment can be made. In specific comparison, it is only necessary to observe vertically to see if the suspended standard section of positioning bar 4 coincides with the shear bars in the vertical direction. If they do not coincide, adjust the position of the shear bars so that the shear bars and the standard section coincide. By adjusting while walking, the straightness of the shear bars can be ensured, and the horizontal spacing of the shear bars can be guaranteed.

[0030] In this embodiment, as Figures 1 to 7As shown, the positioning longitudinal plate 5 is fixed on the cradle 1, and a plurality of positioning longitudinal plates 5 are arranged between the walking tracks 2 along the transverse direction of the box girder, and the positioning longitudinal plate 5 extends along the longitudinal direction of the box girder, that is, the extending direction of the positioning longitudinal plate 5 is parallel to the longitudinal direction of the box girder. A plurality of steel bar clamping grooves 6 are arranged on the top surface of the positioning longitudinal plate 5 along the longitudinal direction of the box girder, and the spacing of the steel bar clamping grooves 6 is consistent with the preset spacing of the distribution steel bars 15, and the groove depth of the steel bar clamping grooves 6 is consistent with the preset elevation of the distribution steel bars 15. The distribution steel bars 15 are clamped in the steel bar clamping grooves 6 at the corresponding positions of the plurality of positioning longitudinal plates 5, and the positioning of the distribution steel bars 15 in the height direction is completed. When all the distribution steel bars 15 are installed, the height of the shear steel bars laid on the distribution steel bars 15 all meets the preset elevation. That is, the elevation of the distribution steel bars 15 is positioned by the groove depth of the steel bar clamping grooves 6, and then the elevation of the shear steel bars is positioned by the elevation of the distribution steel bars 15.

[0031] In the embodiment, as shown in Figures 1 to 7 The positioning steel bars 4 are fixedly connected to the end surface of the walking trolley 3 in the direction opposite to the moving direction, and at this time, the positioning steel bars 4 are all suspended, that is, the positioning steel bars 4 are all standard sections. The fixing mode of the positioning steel bars 4 and the walking trolley 3 is various, and the positioning steel bars 4 can be welded or fixed by other components. If adjustment is not performed later, welding can be used.

[0032] In the embodiment, as shown in Figures 1 to 7 The walking trolley 3 includes a horizontally arranged steel plate base 7, and the bottom of the steel plate base 7 is provided with walking wheels 8 and a driving mechanism for driving the walking wheels 8. The walking wheels 8 are used for walking on the walking tracks 2.

[0033] Further, in the embodiment, as shown in Figures 1 to 7 The driving mechanism includes a driving motor connected with the walking wheels 8, and the driving motor can drive the walking wheels 8 to rotate when started. As preferred, the driving motor and the walking wheels 8 are connected through a speed reducer.

[0034] In order to be able to adjust the position of the positioning steel bars 4, adjust according to different shear steel bar spacings, and achieve the purpose of repeated use of the walking trolley 3, in the embodiment, as shown in Figures 1 to 7As shown in the figure, the end surface of the steel plate base 7 facing away from the moving direction is provided with a sliding groove 11, and the positioning rib 4 is slidingly connected in the sliding groove 11 through a sliding block 12. The steel plate base 7 is provided with a plurality of positioning bolt holes 13, and the plurality of positioning bolt holes 13 are arranged at intervals along the transverse direction of the box girder. The sliding block 12 is provided with a locking bolt hole 14, and the position of the positioning rib 4 can be changed by moving the sliding block 12. When the locking bolt hole 14 on the sliding block 12 corresponds to the positioning bolt hole 13, the sliding block 12 can be locked through a bolt. By corresponding the locking bolt hole 14 to different positioning bolt holes 13, the position can be changed, and the position of the positioning rib 4 can be changed. The spacing between the positioning bolt holes 13 can be set to one tenth of the preset spacing of the shear reinforcement to improve the adjustment accuracy. Of course, it can also be adaptively changed. The sliding block 12 and the positioning rib 4 can be fixed by welding. The number of sliding blocks 12 and positioning ribs 4 corresponds to the number of shear reinforcement. If the number is not enough, additional sliding blocks 12 can be added in the sliding groove 11. As a preferred embodiment, the sliding block 12 and the positioning rib 4 can also be fixed by detachable connection, such as setting a plug-in hole 16 on the sliding block 12. By inserting the positioning rib 4 into the plug-in hole 16, the fixing of the two can be completed.

[0035] In this embodiment, as shown in the figure, Figures 1 to 7 The trolley 1 is provided with walking tracks 2 of different intervals. Then, different transverse widths of box girders are dealt with. When the box girder is small, two walking tracks 2 of small intervals can be used, and then a walking trolley 3 of corresponding width is set. When the box girder is large, two walking tracks 2 of large intervals are used, and then a walking trolley 3 of corresponding width is set.

[0036] Further, in this embodiment, as shown in the figure, Figures 1 to 7 The walking track 2 is mainly composed of angle steel 9 or U-shaped steel 10. Multiple groups of walking tracks 2 (two walking tracks 2 in each group, forming different intervals) can be made of U-shaped steel 10 or angle steel 9, or part of them can be made of angle steel 9 and part of them can be made of U-shaped steel 10. However, it should be noted that for the corresponding two walking tracks 2, if one of them is made of angle steel 9, the other one also needs to be made of angle steel 9. If one of them is made of U-shaped steel 10, the other one also needs to be made of U-shaped steel 10. When using angle steel 9, the vertical plate segments of the two angle steels 9 need to be arranged inward, so that the walking wheel 8 can be limited when walking on the horizontal plate segment of the angle steel 9, to avoid derailing. When using U-shaped steel 10, the walking wheel 8 is located in the U-shaped groove of the U-shaped steel 10. The U-shaped steel 10 and the angle steel 9 are fixed on the trolley 1 by welding, of course, they can also be connected by bolts. If the bolt connection method is used, it is best to use a countersunk head bolt, so that the bolt head will not protrude, thereby ensuring the stability of the movement of the walking wheel 8.

[0037] Embodiment 2

[0038] The embodiment provides a box girder shear bar positioning method using the box girder shear bar positioning device in the embodiment 1, as shown in the figure, comprising the steps of calibrating a shear bar laying position: a walking trolley 3 moves from one end of a box girder to the other end, and during the movement, whether the calibrated section of a positioning bar 4 coincides with the already laid shear bar on the box girder is compared; if there is a position where the calibrated section does not coincide with the already laid shear bar, the walking trolley 3 is paused, the position of the shear bar is adjusted until the calibrated section coincides with the shear bar, the walking trolley 3 is started again, and the process is repeated until the walking trolley 3 reaches the end of the box girder. Figures 1 to 7 As shown in the figure, the method further comprises the step of calibrating a shear bar height position before the step of calibrating the shear bar laying position.

[0039] As shown in the figure, the method further comprises the step of calibrating a shear bar height position before the step of calibrating the shear bar laying position. Figures 1 to 7 As shown in the figure, the method further comprises the step of calibrating a shear bar height position before the step of calibrating the shear bar laying position.

[0040] As shown in the figure, the method further comprises the step of calibrating a shear bar height position before the step of calibrating the shear bar laying position. Figures 1 to 7 As shown in the figure, the method further comprises the step of calibrating a shear bar height position before the step of calibrating the shear bar laying position.

[0041] ①According to the design size, the positioning bar 4 is fixed on the steel plate base 7 of the walking trolley 3, and the positioning bar 4 is used to determine the transverse spacing of the shear bar;

[0042] ②The walking track 2 is erected on both sides of the bed frame 1, and the walking wheel 8 of the walking trolley 3 is placed on the walking track 2, so that the walking trolley 3 can move along the longitudinal direction of the box girder;

[0043] ③The positioning longitudinal plate 5 is welded on the bed frame 1, so as to facilitate the installation of the distribution bar 15 and the elevation positioning of the shear bar.

[0044] Beneficial effects: the device has good on-site use effect, can quickly and accurately position and install the shear bar according to the positioning bar 4 of the walking trolley 3 in actual application, and saves the measurement and layout time during manual positioning and installation, can be used at any time, greatly saves manpower and material resources, improves the positioning and installation efficiency of the box girder shear bar, can be recycled, avoids material waste, has simple principle, and is convenient to assemble and disassemble. Meanwhile, the device avoids the phenomenon that the steel bar is disturbed due to human trampling, the shear bar is straight after installation, the elevation is uniform, the quality of the steel bar framework is guaranteed, the device does not need to purchase digital instruments, is simple to operate, and has low cost.

[0045] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the method of the present application and its core idea; meanwhile, for the general technical personnel in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed. In conclusion, the content of the present specification should not be understood as the limitation of the present application.

Claims

1. A positioning device for shear reinforcement in a box girder, characterized in that, The system includes traveling tracks located on both sides of the box girder in the transverse direction. The traveling tracks extend along the longitudinal direction of the box girder and are fixed on a frame. A self-moving trolley is provided on the traveling tracks. The trolley spans the box girder in the transverse direction. Several positioning bars are installed on the trolley. The positioning bars are arranged in the transverse direction of the box girder according to the design position of the shear bars. The axis of the positioning bars is parallel to the longitudinal direction of the box girder. The positioning bars include a calibration section for comparing with the position of the shear bars already laid on the box girder. The calibration section extends out of the trolley and is suspended in the air.

2. The box girder shear reinforcement positioning device according to claim 1, characterized in that, The system includes positioning longitudinal plates spaced along the transverse direction of the box girder between the traveling tracks. The positioning longitudinal plates extend longitudinally along the box girder and are fixed to the jig. The top surface of the positioning longitudinal plates has a plurality of rebar positioning slots for placing the distribution bars. The plurality of rebar positioning slots are arranged along the longitudinal spacing of the box girder. The spacing of the rebar positioning slots is consistent with the preset spacing of the distribution bars, and the depth of the rebar positioning slots is consistent with the preset elevation of the distribution bars.

3. The box girder shear reinforcement positioning device according to claim 1, characterized in that, The positioning rib is fixedly connected to the end face of the traveling trolley opposite to the direction of movement.

4. A box girder shear reinforcement positioning device according to claim 3, characterized in that, The traveling trolley includes a horizontally arranged steel plate base, and the bottom of the steel plate base is provided with traveling wheels for traveling on the traveling track and a drive mechanism for driving the traveling wheels.

5. A box girder shear reinforcement positioning device according to claim 4, characterized in that, The drive mechanism includes a drive motor connected to the walking wheel.

6. A box girder shear reinforcement positioning device according to claim 4, characterized in that, The steel plate base has a groove on the end face opposite to the moving direction. The positioning rib is slidably connected in the groove by a slider. The steel plate base has a plurality of positioning bolt holes, which are spaced apart along the transverse direction of the box girder. The slider has locking bolt holes for bolting with the positioning bolt holes.

7. A box girder shear reinforcement positioning device according to claim 1, characterized in that, The frame is provided with the travel tracks at different intervals.

8. A box girder shear reinforcement positioning device according to claim 7, characterized in that, The running track is mainly composed of angle steel or U-shaped steel.

9. A method for positioning shear reinforcement in a box girder using the box girder shear reinforcement positioning device as described in any one of claims 1 to 8, characterized in that, This includes calibrating the shear reinforcement placement: the traveling trolley moves from one end of the box girder to the other, comparing the shear reinforcement already laid on the box girder with the calibration section of the positioning reinforcement during the movement. If the shear reinforcement and the calibration section do not overlap vertically, the traveling trolley is paused, the shear reinforcement position is adjusted, and the traveling trolley is restarted to repeat the above process.

10. A method for positioning shear reinforcement in a box girder according to claim 9, characterized in that, Before calibrating the shear reinforcement laying position, the step also includes calibrating the shear reinforcement height position: installing the distribution reinforcement in the reinforcement positioning groove of the positioning longitudinal plate, and then laying the shear reinforcement on the distribution reinforcement.

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