Small box girder bottom die sliding device

Abstract

The utility model discloses a small box girder bottom die sliding device, and belongs to the field of small box girder construction. The device comprises a movable pedestal, the lower end of the movable pedestal is connected with a plurality of walking wheels, the upper end of the movable pedestal is provided with a bottom die, the bottom die comprises a standard section bottom die detachably installed on the movable pedestal and a beam end sliding bottom die slidably arranged on the movable pedestal, and standard supporting panels are laid on the tops of the standard section bottom die. Beam end supporting panels are laid on the tops of the beam end sliding bottom dies, the ends, close to the beam end sliding bottom dies, of the standard section bottom dies are connected with guiding panels, and the top faces of the beam end supporting panels are flush with the top faces of the guiding panels. Deformation of the bottom die can be small, and damage to concrete at the bottom opening of the beam end can be small.

Description

Technical Field

[0001] The utility model belongs to the field of small box beam construction, in particular to a small box beam bottom form sliding device. Background Art

[0002] In the smart beam yard for prefabricated T-beams and small box beams of highway bridges, the mobile pedestal tensioning end will generate large vertical and horizontal forces at the beam end during the tensioning operation, resulting in large deformation of the bottom formwork and deep damage to the concrete at the bottom of the beam end. Therefore, it is necessary to make improvements to this. Utility Model Content

[0003] The utility model aims to provide a bottom form sliding device for a small box beam, so as to solve the problem that the existing related technology easily causes large deformation of the bottom form and deep damage to the concrete at the bottom of the beam end.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a small box beam bottom mold sliding device, including a mobile pedestal, a plurality of walking wheels are connected to the lower end of the mobile pedestal, and a bottom mold is arranged on the upper end of the mobile pedestal, and the bottom mold includes a standard section bottom mold detachably mounted on the mobile pedestal and a beam end sliding bottom mold slidably arranged on the mobile pedestal, a standard support panel is laid on the top of the standard section bottom mold, and a beam end supporting panel is laid on the top of the beam end sliding bottom mold, the standard section bottom mold is connected to a guide panel at one end close to the beam end sliding bottom mold, and the top surface of the beam end support panel is flush with the top surface of the guide panel.

[0005] In the above technical solution, the standard section bottom mold includes a supporting truss fixed on a movable pedestal, the standard supporting panel is installed on the supporting truss, and a plurality of reinforcing ribs are connected to the supporting truss.

[0006] In the above technical solution, there are two beam end sliding bottom molds, the standard section bottom mold is located between the two beam end sliding bottom molds, and multiple limit seats for limiting the beam end sliding bottom molds are arranged on both sides of the beam end sliding bottom mold located at the front end.

[0007] In the above technical solution, the limit seat includes a bottom plate installed on the movable platform, and a baffle connected to the bottom plate, and the baffle is in contact with the side of the sliding bottom mold at the beam end.

[0008] In the above technical solution, the beam end sliding bottom mold includes a sliding top plate, the beam end support panel is installed on the top of the sliding top plate, the lower end of the sliding top plate is connected to a plurality of sliding support blocks arranged at intervals, the bottom of the sliding support block is connected to a sliding panel, and the top of the baffle is in contact with the side of the sliding top plate.

[0009] In the above technical solution, a plurality of support rods are connected to the lower end of the guide panel, and the plurality of support rods are installed on the movable base through a guide support base.

[0010] In the above technical solution, the rear end of the movable platform is also connected with a step.

[0011] In the above technical solution, the running wheels include a single-wheel running wheel located at the front end of the mobile platform and a double-wheel running wheel located at the rear end of the mobile platform. There are multiple single-wheel running wheels and only one double-wheel running wheel.

[0012] The utility model provides a small box beam bottom form sliding device, comprising a movable pedestal, a beam end sliding bottom form and a standard section bottom form; when the small box beam arranged on the bottom form is tensioned, the bottom form will slide together with the beam body toward the middle of the beam span, thereby reducing damage to the bottom form and damage to concrete at the beam support position when the beam body is tensioned, thereby reducing deformation of the bottom form and less damage to concrete at the bottom of the beam end. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a structural schematic diagram of the bottom mold sliding device of the small box beam described in the present application;

[0015] Figure 2 It is a structural schematic diagram of the sliding bottom formwork at the beam end;

[0016] Figure 3 It is a schematic diagram of the connection structure between the standard section bottom formwork and the beam end sliding bottom formwork at the guide panel.

[0017] In the figure: 1. Mobile pedestal; 2. Travel wheel; 21. Single-wheel travel wheel; 22. Two-wheel travel wheel; 3. Bottom mold; 31. Standard section bottom mold; 32. Sliding bottom mold at beam end; 33. Support truss; 34. Reinforcement rib; 35. Sliding top plate; 36. Sliding support block; 37. Sliding panel; 41. Standard support panel; 42. Beam end support panel; 51. Guide panel; 52. Support rod; 53. Guide support seat; 6. Limit seat; 61. Bottom plate; 62. Baffle; 63. Sliding plate; 7. Step. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. At the same time, it should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0019] like Figure 1 As shown, the utility model provides a sliding device for a small box beam bottom mold 3, comprising a mobile pedestal 1, a plurality of walking wheels 2 being connected to the lower end of the mobile pedestal 1, a bottom mold 3 being arranged at the upper end of the mobile pedestal 1, the bottom mold 3 comprising a standard section bottom mold 31 detachably mounted on the mobile pedestal 1 and a beam end sliding bottom mold 32 slidably arranged on the mobile pedestal 1, a standard support panel 41 being laid on the top of the standard section bottom mold 31, a beam end supporting panel 42 being laid on the top of the beam end sliding bottom mold 32, the standard section bottom mold 31 being connected to a guide panel 51 at one end close to the beam end sliding bottom mold 32, the top surface of the beam end supporting panel 42 is flush with the top surface of the guide panel 51.

[0020] In actual work, when the staff is tensioning the small box girder set on the bottom formwork 3, the bottom formwork 3 will slide together with the beam body toward the middle of the beam span. In this way, the present application reduces the damage to the bottom formwork 3 and the damage to the concrete at the beam support position when the beam body is tensioned, thereby reducing the deformation of the bottom formwork 3 and reducing the damage to the concrete at the bottom of the beam end.

[0021] The standard section bottom mold 31 includes a support truss 33 fixed on the mobile pedestal 1, the standard support panel 41 is installed on the support truss 33, and a plurality of reinforcing ribs 34 are connected to the support truss 33. In this way, the present application also realizes the layout of the standard section bottom mold 31 structure, and under the action of the support truss 33 and the reinforcing ribs 34, the structural stability of the present application is relatively high.

[0022] There are two beam end sliding bottom molds 32, and the standard section bottom mold 31 is located between the two beam end sliding bottom molds 32. A plurality of limit seats 6 are arranged on both sides of the beam end sliding bottom mold 32 located at the front end for limiting the beam end sliding bottom mold 32. In this way, the present application also realizes the layout of the beam end sliding bottom mold 32 structure, and under the action of the limit seats 6, the structural stability of the present application is higher.

[0023] The position limiting seat 6 includes a bottom plate 61 mounted on the movable platform 1, and a baffle plate 62 connected to the bottom plate 61, and the baffle plate 62 contacts the side of the beam end sliding bottom mold 32. In this way, the present application also realizes the arrangement of the position limiting seat 6 structure, and the baffle plate 62 can play a certain role in limiting the beam end sliding bottom mold 32. In actual operation, the movable platform 1 can also be provided with a sliding plate 63 to allow the beam end sliding bottom mold 32 to slide on the movable platform 1 more conveniently.

[0024] The beam end sliding bottom mold 32 includes a sliding top plate 35, the beam end support panel 42 is installed on the top of the sliding top plate 35, a plurality of sliding support blocks 36 arranged at intervals are connected to the lower end of the sliding top plate 35, the bottom of the sliding support block 36 is connected to the sliding panel 37, and the top of the baffle 62 is in contact with the side of the sliding top plate 35. Under the joint action of the sliding top plate 35, the sliding support block 36 and the sliding panel 37, the present application not only has high structural stability, but also can well meet the demand of sliding with a small box beam.

[0025] The lower end of the guide panel 51 is connected to a plurality of support rods 52, and the plurality of support rods 52 are installed on the movable platform 1 through the guide support seat 53. In this way, under the action of the guide support seat 53 and the plurality of support rods 52, the guide panel 51 can be well fixed on the standard section bottom mold 31.

[0026] The rear end of the mobile stand 1 is also connected with a step 7 to make the application more convenient to use.

[0027] The running wheels 2 include a single-wheel running wheel 21 located at the front end of the mobile platform 1 and a two-wheel running wheel 22 located at the rear end of the mobile platform 1. There are multiple single-wheel running wheels 21 and only one two-wheel running wheel 22. In this way, the application is more convenient to use.

[0028] The existing small box girder is constructed with a fully fixed bottom formwork 3. When the existing small box girder is tensioned, the stress form at the bottom of the beam will change from linear stress to point stress due to the overall upward arch of the beam body, and the stress point will move toward the middle of the beam. The sliding device of the bottom formwork 3 of the small box girder described in the present application is compared with the fully fixed bottom formwork 3. When the small box girder described in the present application is tensioned, the bottom formwork 3 will slide toward the middle of the beam span together with the beam body, thereby reducing the damage to the bottom formwork 3 and the damage to the concrete at the beam support position when the beam body is tensioned.

[0029] During actual operation, the mobile pedestal 1 is mainly composed of a main truss, which can be separated from the bottom mold 3. The standard section bottom mold 31 can be fixed on the mobile pedestal 1 with bolts. There is a gap between the beam end sliding bottom mold 32 and the mobile pedestal 1 (truss). Stainless steel panels can be laid on the standard support panel 41 and the beam end support panel 42 to further reduce the friction coefficient.

[0030] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A small box beam bottom mold sliding device, characterized in that: The invention comprises a movable platform (1), wherein the lower end of the movable platform (1) is connected to a plurality of walking wheels (2), and the upper end of the movable platform (1) is provided with a bottom mold (3), wherein the bottom mold (3) comprises a standard section bottom mold (31) detachably mounted on the movable platform (1) and a beam end sliding bottom mold (32) slidably arranged on the movable platform (1), wherein the top of the standard section bottom mold (31) is provided with a standard support panel (41), and the top of the beam end sliding bottom mold (32) is provided with a beam end support panel (42), wherein the standard section bottom mold (31) is connected to a guide panel (51) at one end close to the beam end sliding bottom mold (32), and the top surface of the beam end support panel (42) is flush with the top surface of the guide panel (51).

2. The bottom mold sliding device of the small box beam according to claim 1 is characterized in that: The standard segment bottom mold (31) comprises a supporting truss (33) fixed on a movable platform (1), the standard supporting panel (41) is installed on the supporting truss (33), and a plurality of reinforcing ribs (34) are connected to the supporting truss (33).

3. The small box beam bottom mold sliding device according to claim 2 is characterized in that: There are two beam end sliding bottom molds (32), the standard section bottom mold (31) is located between the two beam end sliding bottom molds (32), and a plurality of limit seats (6) for limiting the beam end sliding bottom mold (32) are arranged on both sides of the beam end sliding bottom mold (32) located at the front end.

4. The small box beam bottom mold sliding device according to claim 3 is characterized in that: The limiting seat (6) comprises a bottom plate (61) mounted on the movable platform (1), and a baffle (62) connected to the bottom plate (61), wherein the baffle (62) contacts the side of the beam end sliding bottom mold (32).

5. The small box beam bottom mold sliding device according to any one of claims 1 to 4, characterized in that: The beam end sliding bottom mold (32) comprises a sliding top plate (35), the beam end support panel (42) is installed on the top of the sliding top plate (35), the lower end of the sliding top plate (35) is connected to a plurality of sliding support blocks (36) arranged at intervals, the bottom of the sliding support block (36) is connected to a sliding panel (37), and the top of the baffle (62) is in contact with the side of the sliding top plate (35).

6. The small box beam bottom mold sliding device according to claim 5 is characterized in that: The lower end of the guide panel (51) is connected to a plurality of support rods (52), and the plurality of support rods (52) are mounted on the movable platform (1) via a guide support seat (53).

7. The bottom mold sliding device of the small box beam according to claim 6 is characterized in that: The rear end of the movable platform (1) is also connected to a step (7).

8. The small box beam bottom mold sliding device according to claim 7 is characterized in that: The running wheels (2) comprise a single-wheel running wheel (21) located at the front end of the mobile platform (1) and a double-wheel running wheel (22) located at the rear end of the mobile platform (1), wherein there are a plurality of single-wheel running wheels (21) and there is only one double-wheel running wheel (22).

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