A prefabricated box beam foot protection structure for a pedestal
By installing the fixing mechanism of the clamping member and the clamping drive assembly on the fixed base of the prefabricated box girder, the problems of slippage and friction damage during the prefabricated box girder are solved, and stable fixation and high-quality prefabricated box girder are achieved.
Patent Information
- Application Number
- CN202421313324.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-07
AI Technical Summary
During the pretreatment process of prefabricated box beams, the foot part is prone to slip relative to the fixed pedestal due to the reaction force of the tension jack, resulting in friction damage and affecting the quality of the component.
Design a prefabricated box girder foot protective structure for a pedestal, including a fixing pedestal and a fixing mechanism. The fixing mechanism consists of two clamping members and a clamping drive assembly, which moves toward each other through a bidirectional screw and a guide to drive the clamping member toward each other, realizing further fixation of the prefabricated box beam.
By tightening and fixing the clamps, the relative position between the prefabricated box beam and the fixed base is stabilized, preventing the foot from slipping and friction damage, and ensuring the quality of the pretreated component.
Smart Images
Figure CN222697521U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of box girder construction, and in particular to a prefabricated box girder foot protection structure for a pedestal. Background Art
[0002] Precast box girders are concrete components that are prefabricated and finished in a factory. They are made in a factory using materials such as formwork, steel bars and concrete, and are finished after various inspections and tests on the production line. Precast box girders are widely used in bridge projects, including highway bridges, railway bridges, tunnels and high-speed railways.
[0003] Prefabricated box girders may be affected by various factors during transportation, such as gravity, vibration, and temperature changes, which may cause stress and deformation in prefabricated box girders. Therefore, before installation, the beams need to be pretreated to ensure that they can withstand the designed load and remain stable during use.
[0004] When prefabricated box girders are pretreated in the prior art, it is usually necessary to place the prefabricated box girders to be pretreated on top of a fixed pedestal, and then install a tensioning jack on one side of the length direction of the prefabricated box girders to tension the steel bars in the prefabricated box girders through the tensioning jacks. The tensioning jacks generate prestress in the prefabricated box girders by applying tension, thereby increasing the strength and rigidity of the prefabricated box girders and improving their ability to resist external loads. This prestress can also offset the internal stress and deformation that may be generated in the prefabricated box girders during transportation, so as to ensure the stability and safety of the prefabricated box girders during use.
[0005] With regard to the above-mentioned prior art, during the process of tensioning the steel bars in the prefabricated box girder by the tensioning jack, the foot part of the prefabricated box girder is prone to relative slippage with the fixed pedestal due to the reaction force of the tensioning jack, which makes the foot of the prefabricated box girder prone to damage due to friction with the fixed pedestal, making it difficult to ensure the quality of the prefabricated box girder components after pretreatment. Utility Model Content
[0006] In order to prevent the foot of the prefabricated box girder from being damaged due to friction with the fixed pedestal and to ensure the quality of the prefabricated box girder components after pretreatment, the present application provides a prefabricated box girder foot protection structure for a pedestal.
[0007] The present application provides a prefabricated box beam foot protection structure for a pedestal using the following technical solution:
[0008] A prefabricated box beam foot protection structure of a pedestal, comprising a fixed pedestal, wherein the fixed pedestal is used to carry the prefabricated box beam; and also comprising a fixing mechanism arranged on the fixed pedestal, wherein the fixing mechanism comprises two clamping members and a clamping drive assembly, wherein the two clamping members are both slidably engaged with the fixed pedestal, and when the fixed pedestal carries the prefabricated box beam, the two clamping members are respectively located on both sides of the width direction of the prefabricated box beam, and the clamping drive assembly is used to drive the two clamping members to move toward or away from each other.
[0009] By adopting the above technical scheme, when the prefabricated box girder is placed on a fixed pedestal for bearing and the two clamps are located on both sides of the width direction of the prefabricated box girder, the two clamps are driven by the clamping drive assembly to move in a direction close to each other. When the two clamps press the prefabricated box girder, the position of the prefabricated box girder is further fixed, which is beneficial to further ensure the stability of the relative position between the prefabricated box girder and the fixed pedestal, so that the foot part of the prefabricated box girder is not easy to slip relative to the fixed pedestal due to the reaction force of the tensioning jack, and further make the foot of the prefabricated box girder less likely to be damaged due to friction with the fixed pedestal, which is beneficial to ensure the quality of the prefabricated box girder components after pretreatment.
[0010] Optionally, the clamping drive assembly includes a bidirectional screw and a guide member, the bidirectional screw is horizontally rotatably installed on a fixed base, the two ends of the bidirectional screw with opposite thread rotation directions are respectively passed through two clamping members and cooperate with the threads of the two clamping members, and the guide member is used to guide the two clamping members in a direction of approaching or moving away from each other.
[0011] By adopting the above technical solution, when the bidirectional screw rotates around its own axis, the two clamping members move towards or away from each other under the guidance of the guide member, thereby facilitating the fixing or loosening of the position of the prefabricated box girder. The setting of the bidirectional screw makes the operation of the two clamping members moving towards or away from each other convenient and quick.
[0012] Optionally, the guide member includes a guide rod horizontally fixedly installed on a fixed base, the guide rod is arranged parallel to the bidirectional screw, and the guide rod passes through two clamping members and slidably cooperates with the two clamping members.
[0013] By adopting the above technical solution, the setting of the guide rod facilitates the stable guidance of the two clamping members when they move towards or away from each other.
[0014] Optionally, one end of the bidirectional screw is passed through the outside of the fixed base and a handle is fixedly installed on the end of the bidirectional screw passed through the outside of the fixed base.
[0015] By adopting the above technical solution, the setting of the handle makes it easier for the staff to apply force to rotate the bidirectional screw around its own axis.
[0016] Optionally, the clamping member includes a driving part and a clamping part, the clamping driving part is used to drive the two driving parts to move towards or away from each other, the clamping part is rotatably installed on the driving part, the driving part is provided with a rotating part for driving the clamping part to rotate, and the clamping parts of the two clamping members are used to clamp both sides of the prefabricated box girder in the width direction.
[0017] By adopting the above technical solution, the arrangement of the rotating member driving the clamping part to rotate makes it easy for the clamping part to clamp and fix the two sides of the prefabricated box beam in the width direction at different angles, thereby facilitating adaptation to prefabricated box beams of different external dimensions, and having strong applicability.
[0018] Optionally, the rotating member includes a rotating worm wheel and a rotating worm. The clamping portion is fixedly mounted on a rotating shaft, the rotating shaft is rotatably mounted on the driving portion, and the rotating worm wheel is coaxially fixedly mounted on the rotating shaft. The rotating worm is rotatably mounted on the driving portion and meshes with the rotating worm wheel.
[0019] By adopting the above technical solution, when force is applied to rotate the rotating worm, the rotating worm wheel drives the clamping part to rotate together through the rotating shaft, thereby realizing the adjustment of the rotation angle of the clamping part. The self-locking effect between the rotating worm wheel and the rotating worm is conducive to ensuring the stability of the position of the clamping part after rotation.
[0020] Optionally, the driving part is equipped with a protective cover, and the protective cover is used to cover the rotating worm wheel and the rotating worm.
[0021] By adopting the above technical solution, the setting of the protective cover plays a protective role in the rotating worm wheel and the rotating worm, making the rotating worm wheel and the rotating worm not easily affected by external substances, which is conducive to ensuring the stability of the rotating worm when driving the rotating worm to rotate.
[0022] Optionally, a clamping rubber pad is fixedly provided on one side of the clamping portion close to the prefabricated box girder.
[0023] By adopting the above technical solution, the setting of the clamping rubber pad plays a buffering role when the clamping part clamps and fixes the prefabricated box girder, so that the prefabricated box girder is not easily damaged by the clamping of the clamping part.
[0024] Optionally, a supporting rubber pad is installed on the top of the fixed pedestal, and when the fixed pedestal bears the prefabricated box girder, the prefabricated box girder is located on the top of the supporting rubber pad.
[0025] By adopting the above technical solution, the setting of the supporting rubber pad further increases the friction between the prefabricated box girder and the fixed pedestal on the one hand, which is beneficial to ensure the stability of the relative position between the prefabricated box girder and the fixed pedestal, and on the other hand, buffers the fixed pedestal and the prefabricated box girder, making it less likely for the fixed pedestal and the prefabricated box girder to be worn due to rigid friction.
[0026] In summary, the present application includes at least one of the following beneficial technical effects:
[0027] 1. When the two clamps press the prefabricated box girder, the position of the prefabricated box girder is further fixed, which is conducive to further ensuring the stability of the relative position between the prefabricated box girder and the fixed pedestal, making it difficult for the foot of the prefabricated box girder to slip relative to the fixed pedestal due to the reaction force of the tensioning jack, and further making it difficult for the foot of the prefabricated box girder to be damaged due to friction with the fixed pedestal, which is conducive to ensuring the quality of the prefabricated box girder components after pretreatment.
[0028] 2. The arrangement of the rotating part driving the clamping part to rotate facilitates the clamping part to clamp and fix both sides of the prefabricated box beam in the width direction at different angles, thereby facilitating adaptation to prefabricated box beams of different external dimensions, and having strong applicability.
[0029] 3. The setting of the clamping rubber pad plays a buffering role when the clamping part clamps and fixes the prefabricated box girder, so that the prefabricated box girder is not easily damaged by the clamping of the clamping part. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0031] Figure 2 It is a formal schematic diagram of the overall structure hidden protective door in the embodiment of the present application.
[0032] Description of reference numerals:
[0033] 1. Fixed base; 2. Support rubber pad; 3. Clamping piece; 301. Driving part; 302. Clamping part; 4. Bidirectional screw; 5. Guide rod; 6. Handle; 7. Rotating shaft; 8. Rotating worm gear; 9. Rotating worm; 10. Protective cover; 11. Receiving groove; 12. Protective door; 13. Hand wheel; 14. Clamping rubber pad. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1 and 2 This application is described in further detail.
[0035] The present application embodiment discloses a prefabricated box beam foot protection structure of a pedestal. Figure 1The prefabricated box beam foot protection structure of the pedestal includes a fixed pedestal 1 and a fixing mechanism arranged on the fixed pedestal 1, wherein the top of the fixed pedestal 1 is used to realize the bearing of the prefabricated box beam. In order to ensure the stability of the fixed pedestal 1 when bearing the prefabricated box beam and prevent the prefabricated box beam from being easily worn due to the rigid friction with the fixed pedestal 1, a supporting rubber pad 2 is fixed on the top of the fixed pedestal 1 by bonding. The prefabricated box beam is placed on the top of the fixed pedestal 1 so that the fixed pedestal 1 can bear the prefabricated box beam. The supporting rubber pad 2 is located at the bottom of the prefabricated box beam.
[0036] Reference Figure 1 and Figure 2 The fixing mechanism includes two clamping members 3 and a clamping drive assembly. When the fixed pedestal 1 carries the prefabricated box beam, the two clamping members 3 are respectively located on both sides of the width direction of the prefabricated box beam. The clamping drive assembly includes a bidirectional screw 4 and a guide member, wherein the bidirectional screw 4 is horizontally rotatably mounted on the fixed pedestal 1, and the two ends of the bidirectional screw 4 with opposite thread rotation directions are respectively passed through the two clamping members 3 along the width direction of the prefabricated box beam and are threadedly matched with the two clamping members 3. The guide member includes a guide rod 5 in the embodiment of the present application. The guide rod 5 is horizontally fixedly mounted on the fixed pedestal 1 and arranged parallel to the bidirectional screw 4. The guide rod 5 is sequentially passed through the two clamping members 3 and is slidably matched with the two clamping members 3 to play a role in limiting and guiding the two clamping members 3 when they are approaching or moving away from each other along the width direction of the prefabricated box beam.
[0037] Reference Figure 1 One end of the bidirectional screw 4 is fixedly connected to a handle 6. When the bidirectional screw 4 is rotated by applying force through the handle 6, the two clamping parts 3 cooperate with the threads of the bidirectional screw 4 and move towards or away from each other along the width direction of the prefabricated box beam under the guidance of the guide rod 5, thereby fixing or not fixing the clamping of both sides of the width direction of the prefabricated box beam.
[0038] Continue to refer to Figure 1 Specifically, the clamping member 3 includes a driving portion 301 and a clamping portion 302, wherein the bidirectional screw rod 4 and the guide rod 5 are both provided through the driving portions 301 of the two clamping members 3. The clamping portion 302 is fixedly connected with a rotating shaft 7, which is arranged along the length direction of the prefabricated box beam, and the rotating shaft 7 is horizontally rotatably mounted on the driving portion 301, so that the clamping portion 302 is rotatably mounted on the driving portion 301 and can be rotated toward or away from the prefabricated box beam through the rotating shaft 7, thereby realizing the adjustment of its own rotation angle, which is convenient for adapting to prefabricated box beams of different external dimensions.
[0039] Reference Figure 1 and Figure 2The driving part 301 is provided with a rotating part for driving the clamping part 302 to rotate around the axis of the rotating shaft 7. The rotating part includes a rotating worm wheel 8 and a rotating worm 9. The rotating worm wheel 8 is coaxially fixedly installed on the rotating shaft 7. The rotating worm 9 is rotatably installed on the driving part 301 and meshes with the rotating worm wheel 8. When the rotating worm 9 rotates, the rotating worm wheel 8 finally realizes the rotation of the clamping part 302 through the rotating shaft 7. The self-locking effect between the rotating worm wheel 8 and the rotating worm 9 is beneficial to ensure the stability of the position of the clamping part 302 after the final rotation.
[0040] Continue to refer to Figure 1 and Figure 2 In order to ensure the stability of the rotating worm 9 when driving the rotating worm wheel 8 to rotate, the driving part 301 is equipped with a protective cover 10 that covers the rotating worm wheel 8 and the rotating worm 9. Specifically, a receiving groove 11 is provided on the side of the protective cover 10 away from the driving part 301. The rotating worm wheel 8 and the rotating worm 9 are both located in the receiving groove 11. The protective cover 10 is rotatably installed with a protective door 12 for opening and closing the notch of the receiving groove 11, so as to facilitate the inspection and maintenance of the rotating worm wheel 8 and the rotating worm 9. One end of the rotating worm 9 is inserted outside the protective cover 10, and the end of the rotating worm 9 inserted outside the protective cover 10 is fixedly connected with a hand wheel 13, so that the staff can apply force through the hand wheel 13 to realize the rotation of the rotating worm 9.
[0041] Reference Figure 1 The two clamping parts 302 are both provided with clamping rubber pads 14 on one side close to the prefabricated box girder by bonding. When the two clamping parts 302 clamp and fix the two sides of the prefabricated box girder in the width direction, the two clamping rubber pads 14 respectively press against the two sides of the prefabricated box girder in the width direction, so as to play a buffering role when the clamping parts 302 clamp and fix the prefabricated box girder, thereby preventing the prefabricated box girder from being damaged due to the clamping of the clamping parts 302.
[0042] The implementation principle of the prefabricated box girder foot protection structure of a pedestal in an embodiment of the present application is as follows: when the prefabricated box girder needs to be preprocessed, the prefabricated box girder is placed on a fixed pedestal 1 for bearing and the two clamping members 3 are located on both sides of the width direction of the prefabricated box girder, the bidirectional screw 4 is rotated by applying force through the handle 6, thereby driving the two clamping members 3 to move in a direction approaching each other, and when the clamping parts 302 of the two clamping members 3 are pressed against the prefabricated box girder, the position of the prefabricated box girder is further clamped and fixed, which is beneficial to further ensure the stability of the relative position between the prefabricated box girder and the fixed pedestal 1, so that the foot part of the prefabricated box girder is not easy to slip relative to the fixed pedestal 1 due to the reaction force of the tensioning jack, and thus the foot of the prefabricated box girder is not easy to be damaged due to friction with the fixed pedestal 1, which is beneficial to ensure the quality of the prefabricated box girder components after preprocessing.
[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A prefabricated box beam foot protection structure of a pedestal, comprising a fixed pedestal (1), wherein the fixed pedestal (1) is used to carry the prefabricated box beam; characterized in that: It also includes a fixing mechanism arranged on the fixing pedestal (1), the fixing mechanism including two clamping members (3) and a clamping drive assembly, the two clamping members (3) are both slidably matched with the fixing pedestal (1), when the fixing pedestal (1) bears the prefabricated box beam, the two clamping members (3) are respectively located on both sides of the width direction of the prefabricated box beam, and the clamping drive assembly is used to drive the two clamping members (3) to move in a direction of approaching or moving away from each other.
2. The prefabricated box beam bottom foot protection structure of a pedestal according to claim 1, characterized in that: The clamping drive assembly comprises a bidirectional screw (4) and a guide member. The bidirectional screw (4) is horizontally rotatably mounted on a fixed base (1). Two ends of the bidirectional screw (4) with opposite thread rotation directions are respectively passed through two clamping members (3) and matched with the threads of the two clamping members (3). The guide member is used to guide the two clamping members (3) in a direction of approaching or moving away from each other.
3. The prefabricated box beam foot protection structure of a pedestal according to claim 2, characterized in that: The guide member comprises a guide rod (5) fixedly mounted horizontally on a fixed pedestal (1); the guide rod (5) is arranged parallel to the bidirectional screw rod (4); the guide rod (5) penetrates the two clamping members (3) and is slidably matched with the two clamping members (3).
4. The prefabricated box beam foot protection structure of a pedestal according to claim 2, characterized in that: One end of the bidirectional screw (4) is inserted outside the fixed base (1), and a handle (6) is fixedly mounted on the end of the bidirectional screw (4) inserted outside the fixed base (1).
5. The prefabricated box beam foot protection structure of a pedestal according to claim 1, characterized in that: The clamping member (3) comprises a driving part (301) and a clamping part (302); the clamping driving assembly is used to drive the two driving parts (301) to move in a direction of approaching or moving away from each other; the clamping part (302) is rotatably mounted on the driving part (301); the driving part (301) is provided with a rotating member for driving the clamping part (302) to rotate; the clamping parts (302) of the two clamping members (3) are used to clamp both sides of the prefabricated box beam in the width direction.
6. The prefabricated box beam foot protection structure of a pedestal according to claim 5, characterized in that: The rotating member comprises a rotating worm wheel (8) and a rotating worm (9); the clamping portion (302) is fixedly mounted on a rotating shaft (7); the rotating shaft (7) is rotatably mounted on a driving portion (301); the rotating worm wheel (8) is coaxially fixedly mounted on the rotating shaft (7); and the rotating worm (9) is rotatably mounted on the driving portion (301) and meshes with the rotating worm wheel (8).
7. The prefabricated box beam foot protection structure of a pedestal according to claim 6, characterized in that: The driving part (301) is equipped with a protective cover (10), and the protective cover (10) is used to cover the rotating worm wheel (8) and the rotating worm (9).
8. The prefabricated box beam foot protection structure of a pedestal according to claim 5, characterized in that: A clamping rubber pad (14) is fixedly arranged on one side of the clamping portion (302) close to the prefabricated box beam.
9. The prefabricated box beam foot protection structure of a pedestal according to claim 1, characterized in that: A supporting rubber pad (2) is installed on the top of the fixed pedestal (1); when the fixed pedestal (1) bears the prefabricated box girder, the prefabricated box girder is located on the top of the supporting rubber pad (2).