Box girder bottom and web stirrup feeding bin

Abstract

The invention provides a box girder bottom and web plate stirrup feeding stock bin, and belongs to the technical field of box girder prefabrication machining, the box girder bottom and web plate stirrup feeding stock bin comprises a stock bin body, the stock bin body comprises an outer bottom plate and outer side plates at the edges of the two sides of the outer bottom plate, and the stock bin body further comprises a supporting part which is connected to the top of the outer side wall and extends into the stock bin body; a plurality of first channels for external longitudinal bars to pass through are formed in the inner side faces of the outer side plates, a plurality of second channels for internal longitudinal bars to pass through are formed in the supporting part, and material stirring holes are formed in the two outer side plates. The combined stirrups of the box girder bottom and the web are neatly arranged in the stock bin body, the outer bottom plate and the outer side plate of the stock bin body are combined to support all the combined stirrups, the situation that the stock bin structure deforms due to suspension type supporting can be effectively avoided, meanwhile, a mechanical arm of a material stirring machine can stretch into the stock bin body from the material stirring hole and clamp the combined stirrups, and the material stirring efficiency is improved. Therefore, the work of automatic clamping, feeding and welding of the combined stirrups is met, and the stability of the stock bin body structure is improved.

Description

Technical Field

[0001] This invention relates to the field of box girder prefabrication technology, and in particular to a feeding hopper for the bottom and web stirrups of a box girder. Background Technology

[0002] In municipal road and bridge construction, box girders are indispensable. To improve construction efficiency, the structural components and internal reinforcing steel cages of box girders are usually prefabricated. When fabricating the bottom and web steel cages of the box girder, the arranged bottom and web stirrups need to be welded into a three-in-one combined stirrup. External longitudinal bars are welded to the outside of the combined stirrup, and internal longitudinal bars are welded to the inside of the combined stirrup, thus forming the integral steel cage of the bottom and web of the box girder.

[0003] Patent CN113927732B discloses a processing system and method for stirrups in the bottom and web plates of a small box girder. The system includes a CNC stirrup bending machine, welding equipment, and a storage device. The storage device includes guide rails and an electrically movable support platform. Two support beams arranged in the same direction are mounted on the upper part of the electrically movable support platform. The platform includes a support plate with two vertical columns, and the support beams are connected to the upper part of the columns. When storing the bottom and web plate stirrups in the storage device, the stirrups on both sides of the web plate are simply hooked onto the two support beams of the processing device.

[0004] However, in practical applications, continuous processing of box girder reinforcement cages requires a large number of bottom and web stirrups. With a large number of stirrups attached to the support beam, the support beam is prone to deflection and bending deformation under the weight of the stirrups. Furthermore, the web stirrups on both sides are also prone to outward deformation under the weight of gravity, affecting the quality of the processed box girder reinforcement cage. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, the present invention provides a feeding hopper for the bottom and web stirrups of a box girder.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0007] A feeding hopper for the bottom and web stirrups of a box girder is provided, comprising a hopper body, which includes an outer bottom plate and two outer side plates. Two outer side plates are respectively fixedly connected to the two edges of the outer bottom plate parallel to the length direction of the hopper body. The ends of the two outer side plates away from the outer bottom plate are symmetrically inclined in a direction away from each other. Several first channels for the external longitudinal reinforcement to pass through are provided on the inner side of the outer side plates along the length direction of the hopper body. The hopper body also includes a support part connected to the top of the outer side wall and extending into the interior of the hopper body. Several second channels for the internal longitudinal reinforcement to pass through are provided on the support part. Material-pulling holes are opened on the two outer side plates along the length direction of the hopper body, penetrating the outer side plates and allowing material-pulling arms to pass through.

[0008] Furthermore, the support includes two inner side plates that are parallel to the two outer side plates respectively. The upper edge of the inner side plate is fixedly connected to the upper edge of the outer side plate by a connecting plate. The outer side plate and the inner side plate form a storage cavity for storing the combined stirrups.

[0009] Furthermore, several through-rib sleeves are fixedly installed on the outer and inner side plates near the storage cavity along the length of the silo body. The through-rib sleeves extend to both end faces of the silo body, and the first channel and the second channel are both installed through the through-rib sleeves.

[0010] Furthermore, the material feeding holes are arranged in multiple segments along the length of the hopper body. The multiple segments of material feeding holes are arranged in at least two rows with parallel intervals. The ends of the material feeding holes extend to one side of the staggered material feeding holes and overlap in the vertical direction. The material feeding holes near both ends of the hopper body penetrate to the end face of the hopper body.

[0011] Furthermore, one end of the inner side plate is flush with one end of the outer side plate, and a first transition gap is provided between the other end of the inner side plate and the other end of the outer side plate.

[0012] Furthermore, rollers are installed at the bottom of the hopper body for rotation.

[0013] Furthermore, the axis of the roller is parallel to the length of the hopper body.

[0014] Furthermore, a limiting step is coaxially fixed on the edge of the outer wall of the roller.

[0015] Furthermore, a second transition gap is provided between the support and the inner wall of the combined stirrups.

[0016] The beneficial effects of this invention are as follows: by neatly arranging the combined stirrups of the bottom and web plates of the box girder within the silo body, and using the outer bottom plate and outer side plate of the silo body to support all the combined stirrups, the deformation of the silo structure caused by the suspended support can be effectively avoided. At the same time, by opening material feeding holes on the side of the outer side plate, it can be ensured that the robotic arm of the material feeding machine can extend into and clamp the combined stirrups from the material feeding holes, so as to meet the automated clamping, feeding and welding work of the combined stirrups, thereby improving the stability of the silo body structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the material hopper in this embodiment of the application, with the stirrups and longitudinal bars combined.

[0018] Figure 2 This is a schematic diagram of the overall structure of the feeding hopper under unloaded conditions in the embodiments of this application;

[0019] Figure 3This is a front view structural diagram of the material hopper with combined stirrups and longitudinal bars in an embodiment of this application;

[0020] Figure 4 This is a front view of the material hopper in an unloaded state in an embodiment of this application.

[0021] Figure 5 This is a side view of the material hopper in an unloaded state in an embodiment of this application.

[0022] Figure 6 for Figure 5 An enlarged schematic diagram of part A in the middle.

[0023] Among them, 1. hopper body; 11. outer bottom plate; 12. outer side plate; 13. through-rib sleeve; 14. material feeding hole; 2. inner side plate; 21. first transition gap; 22. second transition gap; 23. connecting plate; 3. storage cavity; 4. roller; 41. limiting step; 5. combined stirrup; 51. longitudinal reinforcement. Detailed Implementation

[0024] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0025] This invention provides a feeding hopper for the bottom and web stirrups of a box girder, as shown in the following embodiment. Figures 1-4 The silo body 1 includes a support section, an outer bottom plate 11, and two outer side plates 12. The two outer side plates 12 are welded to the long edges on both sides of the outer bottom plate 11. The ends of the outer side plates 12 away from the outer bottom plate 11 are symmetrically inclined in a direction away from each other, so that the cross-section of the silo body 1 is an isosceles trapezoid with a larger top and a smaller bottom. The outer bottom plate 11 is located at the shorter bottom edge of the cross-section of the silo body 1. The cross-section of the silo body 1 is adapted to the shape of the combined stirrups 5 of the bottom and web of the box girder, so that the combined stirrups 5 of the box girder can be neatly arranged in the silo body 1.

[0026] Several first channels for external longitudinal ribs to pass through are provided on the inner side of the outer side plate 12 along the length of the hopper body 1. The support part is connected to the upper edge of the outer side plate 12 and extends into the interior of the two outer side plates 12 of the hopper body 1 to support the inner side of the stirrups 5 inside the hopper body 1. Several second channels for internal longitudinal ribs to pass through are also provided on the support part. Material feeding holes 14 are provided on the two outer side plates 12 along the length of the hopper body 1, penetrating the outer side plates 12 and allowing the material feeding arm to pass through.

[0027] In this embodiment, the support includes two inner side plates 2, each parallel to the outer side plate 12. The upper edge of the inner side plate 2 is fixedly connected to the upper edge of the outer side plate 12 via a connecting plate 23. The outer side plate 12 and the inner side plate 2 together form a storage cavity 3 for storing the combined stirrups 5. In this embodiment, the combined stirrups 5 of the box girder are arranged side by side in the silo body 1, supported by the outer bottom plate 11 and the outer side plates 12 on both sides at the outer edge of the combined stirrups 5, which can effectively prevent the silo body 1 from deforming due to the excessive weight of the combined stirrups 5. When the material feeder removes the combined stirrups 5 of the box girder from the silo body 1, the material feeder clamps the combined stirrups 5 through the feeding hole 14 and pushes them towards the end of the silo body 1 along the length direction of the feeding hole 14. The outer longitudinal bars and inner longitudinal bars for welding with the combined stirrups 5 pass through the first channel and the second channel, respectively, which can support the longitudinal bars to maintain their straightness and effectively improve the service life of the silo.

[0028] In this embodiment, the lower edges of the two inner side plates 2 of the support part are connected as one piece by a horizontally set inner bottom plate, so that the storage cavity 3 on the silo body 1 at the support part position forms a closed-loop cavity, which can effectively prevent the support part from bending and sinking due to large gravity during the process of supporting the internal longitudinal ribs in the second channel, and improve the load-bearing capacity of the silo body 1.

[0029] In this embodiment, several reinforcing sleeves 13 are fixedly arranged along the length of the hopper body 1 on the outer side plate 12 and the inner side plate 2 near the storage cavity 3. The reinforcing sleeves 13 extend to both end faces of the hopper body 1, and the first channel and the second channel are both disposed inside the reinforcing sleeves 13. The outer longitudinal ribs and the inner longitudinal ribs pass through the reinforcing sleeves 13. The reinforcing sleeves 13 are fixed to the outer side plate 12 and the inner side plate 2 by welding to support the outer longitudinal ribs and the inner longitudinal ribs. This allows the hopper body 1 to be placed directly next to the welding robot. The outer longitudinal ribs and the inner longitudinal ribs are passed through the hopper body 1 close to the merging stirrups 5. After the merging stirrups 5 are fed into the welding robot by the material feeder, the outer longitudinal ribs and the inner longitudinal ribs can be directly aligned with the welding positions on the merging stirrups 5. The welding robot then welds the outer longitudinal ribs, the inner longitudinal ribs and the merging stirrups 5 together. Meanwhile, a through-sleeve 13 is welded to the outer side plate 12 and the inner side plate 2 near the storage cavity 3. When the combined stirrups 5 are stored in the storage cavity 3, the stirrups on both sides of the web of the combined stirrups 5 contact and support the outer wall of the through-sleeve 13, greatly reducing the contact area between the combined stirrups 5 and the inner wall of the hopper, thereby reducing the frictional resistance encountered by the feeding machine when feeding the combined stirrups 5. In other embodiments, the first channel and the second channel can also be strip grooves opened on the outer side plate 12 and the inner side plate 2, allowing the longitudinal ribs to pass through the strip grooves.

[0030] In this embodiment, the material feeding holes 14 on the outer side plate 12 are provided in multiple segments along the length of the hopper body 1. The material feeding holes 14 on the outer side plate 12 are arranged in at least two rows parallel to each other in the vertical direction. The end of each segment of the material feeding hole 14 located inside the outer side plate 12 overlaps with the staggered material feeding holes 14 in the vertical direction. The material feeding holes 14 near both ends of the hopper body 1 extend to the end face of the hopper body 1. By providing staggered and multiple segments of material feeding holes 14, the upper and lower sides of the outer side plate 12 are not completely separated by the material feeding holes 14, ensuring sufficient connection stability between the upper and lower sides of the outer side plate 12. The staggered material feeding holes 14 overlap with each other, allowing the material feeding machine to push the combined stirrup 5 from one material feeding hole 14 to the end of the material feeding hole 14 when clamping and feeding it, and then clamp the combined stirrup 5 from the staggered material feeding hole 14 that overlaps with the previous material feeding hole 14 to continue pushing it forward, making it convenient to use.

[0031] In this embodiment, one end of the inner side plate 2 is flush with one end of the outer side plate 12, and a first transition gap 21 is provided between the other end of the inner side plate 2 and the other end of the outer side plate 12. When the merging stirrup 5 moves into the first transition gap 21, the top of the merging stirrup 5 is exposed, so that the subsequent welding robot can clamp and transport the merging stirrup 5 from the first transition gap 21. A second transition gap 22 is also provided between the support and the inner wall of the merging stirrup 5. The second transition gap 22 provides a margin of movement for changes in the size of the merging stirrup 5 and for the tilting of the top of the merging stirrup 5 when the merging stirrups are arranged continuously.

[0032] Reference Figure 5 , Figure 6 A roller 4 is rotatably mounted at the bottom of the hopper body 1, allowing for fine-tuning of the hopper body 1's position when placed on the ground. Furthermore, the axis of the roller 4 is parallel to the length of the hopper body 1, ensuring that the hopper body 1 moves only laterally along the width of the roller 4. This prevents movement of the hopper body 1 during the feeding of longitudinal reinforcement bars and the merging of stirrups 5, thus avoiding interference with the normal welding of the reinforcing cage. Additionally, a protruding limiting step 41 is coaxially fixed to the edge of the outer wall of the roller 4. The limiting step 41 engages with steps on the track, mounting base, or other structures where the hopper body 1 is placed, further restricting the hopper body 1 from sliding along its length on the platform and improving the feeding stability of the hopper body 1.

[0033] Those skilled in the art will understand that although preferred embodiments of the invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if these modifications and modifications of the invention fall within the scope of the claims of the invention and their equivalents, the invention also intends to include these modifications and modifications.

Claims

1. A feeding hopper for the bottom and web stirrups of a box girder, characterized in that, The hopper body (1) includes an outer bottom plate (11) and an outer side plate (12). The two outer side plates (12) are fixedly connected to the outer bottom plate (11) at the two sides of the outer bottom plate (11) parallel to the length direction of the hopper body (1). The two outer side plates (12) are symmetrically inclined at the ends away from the outer bottom plate (11) in a direction away from each other. The inner side of the outer side plate (12) is provided with a number of first channels for the external longitudinal ribs to pass through along the length direction of the hopper body (1). The hopper body (1) also includes a support part connected to the top of the outer side wall and extending into the interior of the hopper body (1). The support part is provided with a number of second channels for the internal longitudinal ribs to pass through. The two outer side plates (12) are provided with material feeding holes (14) that penetrate the outer side plates (12) and allow the material feeding arms to pass through along the length direction of the hopper body (1).

2. The feeding hopper for the bottom and web stirrups of a box girder according to claim 1, characterized in that, The support includes two inner side plates (2) that are parallel to the two outer side plates (12) respectively. The upper edge of the inner side plate (2) is fixedly connected to the upper edge of the outer side plate (12) by a connecting plate (23). The outer side plate (12) and the inner side plate (2) form a storage cavity (3) for storing the combined stirrups (5).

3. The feeding hopper for the bottom and web stirrups of a box girder according to claim 2, characterized in that, Several through-rib sleeves (13) are fixedly arranged on the outer side plate (12) and inner side plate (2) near the storage cavity (3) along the length direction of the silo body (1). The through-rib sleeves (13) extend to the two end faces of the silo body (1). The first channel and the second channel are both arranged through the through-rib sleeves (13).

4. The feeding hopper for the bottom and web stirrups of a box girder according to claim 1, characterized in that, The feeding holes (14) are arranged in multiple segments along the length of the hopper body (1). The multiple feeding holes (14) are arranged in at least two rows with parallel intervals. The ends of the feeding holes (14) extend to one side of the staggered feeding holes (14) and coincide with each other in the vertical direction. The feeding holes (14) near both ends of the hopper body (1) penetrate to the end face of the hopper body (1).

5. The feeding hopper for the bottom and web stirrups of a box girder according to claim 2, characterized in that, One end of the inner side plate (2) is flush with one end of the outer side plate (12), and a first transition gap (21) is provided between the other end of the inner side plate (2) and the other end of the outer side plate (12).

6. The feeding hopper for the bottom and web stirrups of a box girder according to claim 2, characterized in that, The bottom of the hopper body (1) is provided with rotatable rollers (4).

7. A feeding hopper for the bottom and web stirrups of a box girder according to claim 6, characterized in that, The axis of the roller (4) is parallel to the length direction of the hopper body (1).

8. The feeding hopper for the bottom and web stirrups of a box girder according to claim 7, characterized in that, A limiting step (41) is coaxially fixed on the edge of the outer wall of the roller (4).

9. A feeding hopper for the bottom and web stirrups of a box girder according to claim 2, characterized in that, A second transition gap (22) is provided between the support and the inner wall of the combined stirrup (5).

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