Beam moulds based on prestressing method for easy transportation

Abstract

The present invention relates to the field of architectural mold technology, and in particular to a beam mold based on pre-tensioning method that is easy to transport, including a fixed crossbeam, a tensioning mechanism and a tensioning mechanism, one side of the fixed crossbeam is fixedly connected to a pedestal, and the top of the pedestal is detachably connected to side panels on both sides. The present invention tensions the prestressed tendons through the tensioning mechanism and releases the prestressed tendons through the tensioning mechanism, specifically by controlling the sliding of the rack through the rotation of the gear to achieve the height adjustment of the cutting blades on both sides, thereby achieving a variety of cutting methods for the prestressed tendons, improving the applicability of the device, eliminating the need for manual cutting operations, and greatly improving the work efficiency during tensioning and cutting. Through the assembleable connection between the side panels and the pedestal, the mold can be assembled and laid according to the size of the beam component, which can not only improve the applicability of the device, but also effectively reduce the footprint of the mold and reduce costs. Among them, each component can be disassembled and shipped for easy transportation.

Description

Technical Field

[0001] The invention relates to the technical field of building moulds, in particular to a beam mould which is convenient for transportation and based on prestressing method. Background Art

[0002] Prestressed concrete refers to a method of applying prestress to concrete components during prefabrication in order to improve their crack resistance and avoid premature cracking. The method of prestressing steel bars before pouring concrete is called pre-tensioning.

[0003] At present, the production process of prestressed beam molds usually uses a single-side mold to meet the production of prestressed beam components. The large area occupied during the production process results in low site utilization, complex production operations, poor mold versatility, and large mold amortization. This will cause a waste of site resources, and the mold is inconvenient to transport. At the same time, in order to meet the requirements of the construction schedule, a large number of molds need to be invested in production, resulting in low component production efficiency and high cost. In addition, the existing prestressed beam mold production process needs to be cut in different ways according to the different settings of the prestressed steel bars when releasing the tension. For prestressed steel bars with few reinforcements, they can be released and cut one by one, while for prestressed steel wires with more reinforcements, they should be released and cut at the same time to prevent the last prestressed steel wire from breaking or cracking the end due to the sudden increase in stress. However, when cutting, workers usually enter the mold with cutting tools to cut, and there is a small space for the steel bars to move, and it is not convenient to cut them at the same time, resulting in low cutting efficiency. Summary of the invention

[0004] In order to solve the problems that the existing mold has low efficiency in cutting prestressed steel bars, the mold occupies a large space and is inconvenient to transport, and the mold has poor versatility, the present invention provides a beam mold based on prestressing method that is easy to transport.

[0005] The beam mold provided by the present invention, which is based on prestressing method and is easy to transport, adopts the following technical solutions:

[0006] Beam moulds for transport based on prestressing method, including:

[0007] A fixed crossbeam, one side of which is fixedly connected to a pedestal, and both sides of the top of the pedestal are detachably connected to side panels;

[0008] A tensioning mechanism, which is arranged on a fixed crossbeam;

[0009] A tensioning mechanism is arranged inside a fixed crossbeam, and the tensioning mechanism includes a connecting plate and a U-shaped plate. A cylinder is fixedly connected to the outer top wall of the fixed crossbeam, and the output shaft of the cylinder is fixedly connected to the connecting plate. The U-shaped plate is fixedly connected to the bottom end of the connecting plate. Slide grooves are arranged on the inner walls on both sides of the U-shaped plate, and racks are slidably connected in the slide grooves. A rotating rod rotatably connected to the U-shaped plate is arranged between the two racks, and a gear meshing with the rack for transmission is coaxially fixedly connected to the outer wall of the rotating rod. A cavity-shaped extension plate is fixedly connected to the side of the rack away from the gear. The extension plate passes through the U-shaped plate, and a motor is fixedly connected inside it, and a cutting blade is fixedly connected to the output shaft of the motor.

[0010] By adopting the above technical scheme, the tensioning mechanism tensions the prestressed tendons, and the releasing mechanism releases the prestressed tendons. Specifically, the sliding of the rack is controlled by the rotation of the gear to achieve the height adjustment of the cutting blades on both sides, thereby realizing a variety of cutting methods for the prestressed tendons, thereby improving the applicability of the device, eliminating the need for manual cutting operations, and greatly improving the work efficiency during release and cutting. Through the assembleable connection between the side panel and the pedestal, the mold can be assembled and laid according to the size of the beam component, which can not only improve the applicability of the device, but also effectively reduce the footprint of the mold and reduce costs. Among them, each component can be disassembled and shipped for easy transportation.

[0011] Optionally, the tensioning mechanism includes a jack, a movable beam, a pull rod and an anchor, the jack is fixedly connected to a side of the fixed beam away from the pedestal, the output end of the jack is fixedly connected to the movable beam, the pull rod passes through the movable beam, one end of which is connected to the prestressed tendon, and a plurality of anchors are provided, one part of which is connected to one end of the pull rod and located on a side of the movable beam away from the fixed beam, and the other part of the anchor is connected between the pull rod and the prestressed tendon.

[0012] By adopting the above technical solution, during tensioning, the jack provides the tensioning force for the prestressed tendons, controls the movement of the movable crossbeam to pull the tie rod, and the tie rod tensions the prestressed tendons through the connection of the anchor.

[0013] Optionally, the connection between the pull rod and the prestressed tendon is located between the fixed crossbeam and the movable crossbeam.

[0014] By adopting the above technical solution, it is convenient to release the lock between the pull rod and the prestressed tendon, so as to facilitate the release of the prestressed tendon.

[0015] Optionally, the top side of the side panel is detachably covered with an upper cover plate, a port sealing plate is detachably provided between the two side panels, and one end of the prestressed steel bar passing through the port sealing plate is detachably connected with a fixed end anchor bolt.

[0016] By adopting the above technical solution, it is convenient for workers to walk on the upper cover plate without damaging the internal mold, and the setting of the port sealing plate is convenient for installation according to the actual production length of the mold, and has strong applicability.

[0017] Optionally, the outer wall of the side plate is fixedly connected with a vertical pole, a connecting rod is connected between two of the vertical poles, and a bolt is rotatably connected to the connecting rod.

[0018] By adopting the above technical solution, the connecting rod is reinforced with bolts, so that the connection between the vertical rods on both sides is stable, the stability of the two side panels is further improved, and the connecting rod is convenient to share with other molds, thereby reducing production costs.

[0019] Optionally, a plurality of lifting ears are fixedly connected to the top end of the side panel.

[0020] By adopting the above technical solution, it is convenient to lift, disassemble, assemble and transport the side panels, thereby improving the portability of the device.

[0021] Optionally, the bottom of the fixed cross beam is an open structure.

[0022] By adopting the above technical solution, the prestressed tendons can be conveniently dropped and collected after being cut.

[0023] Optionally, the extension plate, the motor and the cutting blade are provided in plurality, and the extension plates on the same side have the same height.

[0024] By adopting the above technical solution, it is convenient to complete the cutting operation simultaneously through multiple cutting blades, ensuring that one end or both ends of the prestressed tendons at the same height are cut off at the same time.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects:

[0026] (1) The prestressed tendons are tensioned by the tensioning mechanism and released by the releasing mechanism. Specifically, the height of the cutting blades on both sides is adjusted by controlling the sliding of the rack by the rotation of the gear, thereby realizing a variety of cutting methods for the prestressed tendons, improving the applicability of the device, and eliminating the need for manual cutting operations, which not only reduces the workload of workers, but also greatly improves the work efficiency during the release and cutting process;

[0027] (2) Through the assembleable connection between the side panel and the pedestal, the mold can be assembled and laid according to the size of the beam component, which can not only improve the applicability of the device, but also effectively reduce the footprint of the mold and reduce costs. Among them, each component can be disassembled and shipped, which is easy to transport, meeting people's needs when using the beam mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1It is a schematic diagram of the three-dimensional structure of the beam mold based on prestressing method for easy transportation in this embodiment.

[0029] Figure 2 It is a schematic diagram of the top view of the structure of the beam mold based on the pre-stressing method for easy transportation in this embodiment.

[0030] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the beam mold for easy transportation based on prestressing method in this embodiment.

[0031] Figure 4 yes Figure 1 Enlarged structural diagram at A in the middle.

[0032] Figure 5 yes Figure 3 Enlarged structural diagram at B in the middle.

[0033] Description of reference numerals:

[0034] 1. Fixed beam; 11. Side plate; 12. Upper cover plate; 13. Port sealing plate; 14. Fixed end anchor bolt; 2. Tensioning mechanism; 21. Jack; 22. Movable beam; 23. Pull rod; 24. Anchor; 3. Base; 31. Vertical pole; 32. Connecting rod; 33. Lifting ear; 34. Bolt; 4. Tensioning mechanism; 41. Cylinder; 42. Connecting plate; 43. U-shaped plate; 44. Rack; 45. Rotating rod; 46. Gear; 47. Extension plate; 48. Motor; 49. Cutting blade. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-Figure 5 The present invention is described in further detail.

[0036] The embodiment of the present invention discloses a beam mold which is convenient for transportation and prestressed based on the pre-tensioning method.

[0037] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] Reference Figure 1-Figure 5 , based on prestressing method, the beam mould for easy transportation includes:

[0039] A fixed crossbeam 1 is fixedly connected to a pedestal 3 on one side, and side panels 11 are detachably connected to both sides of the top of the pedestal 3. The side panels 11 can be constructed according to the size of the beam component, which is suitable for the production of different beam components, thereby effectively improving the applicability of the device, and the mold can be quickly removed to improve production efficiency;

[0040] The tensioning mechanism 2 is arranged on the fixed crossbeam 1 to tension the prestressed tendons. Before the beam member is subjected to external loads, prestress is applied to the tension zone of the member in advance to delay the appearance of cracks in the beam member and limit the development of cracks, thereby improving the crack resistance and stiffness of the member.

[0041] The tensioning mechanism 4 is arranged inside the fixed crossbeam 1. The tensioning mechanism 4 includes a connecting plate 42 and a U-shaped plate 43. The outer top wall of the fixed crossbeam 1 is fixedly connected to a cylinder 41, and the cylinder 41 provides pressure for the cutting blade 49 to move downward, so as to facilitate the cutting of prestressed tendons of different heights. The output shaft of the cylinder 41 is fixedly connected to the connecting plate 42, and the U-shaped plate 43 is fixedly connected to the bottom end of the connecting plate 42. Slide grooves are arranged on the inner walls on both sides of the U-shaped plate 43, and racks 44 are slidably connected in the slide grooves. A rotating rod 45 rotatably connected to the U-shaped plate 43 is arranged between the two racks 44. A gear 46 meshing with the rack 44 is coaxially fixedly connected to the outer wall of the rotating rod 45. A cavity-shaped extension plate 47 is fixedly connected to the side of the rack 44 away from the gear 46. The extension plate 47 passes through the U-shaped plate 43 and is fixedly connected to a motor 48 inside it. The output shaft of the motor 48 is fixedly connected to the cutting blade 49. It should be noted that a driving motor for controlling the rotation of the gear 46 is arranged on the outer side of the U-shaped plate 43.

[0042] Specifically, when in use, first install the side panels 11 and the port cover 13 according to the size of the beam component, and set up the prestressed tendons in the area surrounded by the side panels 11 and the port cover 13. One end of the prestressed tendons passes through the fixed cross beam 1 and is connected to the tensioning mechanism 2, and the other end passes through the port cover 13 for fixation, and then non-prestressed steel bars are set up. This is a prior art and will not be described in detail. After the construction is completed, concrete is poured. After the pouring is completed, a cover plate 12 is placed on the top to facilitate operators to walk and operate on the upper part, provide a good operating environment, and solve the problem of difficult operating space. The tensioning mechanism 2 tensions the prestressed tendons and releases them after tensioning. It should be noted that when releasing and cutting the prestressed tendons, it should be done according to different situations. Situation 1: In the case of prestressed steel bars with few reinforcements , the driving motor controls the gear 46 to rotate, thereby meshing with the two racks 44, changing the height of the extension plate 47, so that there is a height difference between the extension plates 47 on both sides, and the height of the extension plate 47 close to the tensioning end is lower than the height away from the tensioning end. The cylinder 41 and the motor 48 work simultaneously, and the prestressed tendons close to the tensioning end are cut first. The cylinder 41 continues to control the cutting blade 49 to move downward, thereby cutting the prestressed tendons at the end away from the tensioning end; Situation 2: For prestressed steel bars with more reinforcement, they should be tensioned and cut at the same time. The driving motor controls the gear 46 to rotate, and the extension plates 47 are controlled to be at the same height. When the cylinder 41 controls the connecting plate 42 to move downward, the two ends of the prestressed steel bars are cut simultaneously to prevent the last prestressed steel bar from breaking or cracking due to a sudden increase in stress.

[0043] Reference Figure 1 and Figure 2 Specifically, in the embodiment of the present invention, the tensioning mechanism 2 includes a jack 21, a movable beam 22, a tie rod 23 and an anchor 24. The jack 21 is fixedly connected to the side of the fixed beam 1 away from the pedestal 3, the output end of the jack 21 is fixedly connected to the movable beam 22, the tie rod 23 passes through the movable beam 22, and one end thereof is connected to the prestressed tendon. A plurality of anchors 24 are provided, one part of which is connected to one end of the tie rod 23 and is located on the side of the movable beam 22 away from the fixed beam 1, and the other part of the anchor 24 is connected between the tie rod 23 and the prestressed tendon. The connection between the tie rod 23 and the prestressed tendon is located between the fixed beam 1 and the movable beam 22.

[0044] In the embodiment of the present invention, when tensioning, the jack 21 works to push the movable crossbeam 22 to move, and synchronously push the pull rod 23, so as to tension the prestressed steel bars. It should be noted that when multiple prestressed steel bars are tensioned at the same time, the initial stress must be adjusted in advance to make the stress consistent. The deviation of the stress value of the spot check during tensioning shall not be greater than or less than 5% of the total prestress value of all steel wires of the component.

[0045] Reference Figure 1 and Figure 2Specifically, in the embodiment of the present invention, the top side of the side panel 11 is detachably covered with an upper cover plate 12, a port sealing plate 13 is detachably provided between the two side panels 11, and one end of the prestressed steel bar passing through the port sealing plate 13 is detachably connected with a fixed end anchor bolt 14.

[0046] In the embodiment of the present invention, the staff can walk on the upper cover plate 12, thereby providing a good operating space. The setting of the port cover plate 13 is convenient for installation according to the size of the beam component and has strong applicability. The fixed end anchor bolt 14 facilitates the fixing and disassembly of the prestressed steel bars and the port cover plate 13.

[0047] Reference Figure 1 and Figure 4 Specifically, in the embodiment of the present invention, a vertical rod 31 is fixedly connected to the outer wall of the side plate 11, a connecting rod 32 is connected between the two vertical rods 31, and a bolt 34 is rotatably connected to the connecting rod 32.

[0048] In the embodiment of the present invention, when in use, the connecting rod 32 is inserted between the two vertical rods 31 and is locked with bolts 34 so that the positions of the side panels 11 on both sides remain stable.

[0049] Reference Figure 1 and Figure 2 Specifically, in the embodiment of the present invention, a plurality of lifting ears 33 are fixedly connected to the top end of the side plate 11 .

[0050] In the embodiment of the present invention, when removing the mold, a gantry truck is used to connect with the lifting lug 33, so as to facilitate the rapid removal of the mold.

[0051] Reference Figure 3 Specifically, in the embodiment of the present invention, the bottom of the fixed beam 1 is an open structure.

[0052] In the embodiment of the present invention, when the prestressed steel bars are cut, the cut steel bars fall from the opening of the fixed cross beam 1 and are collected.

[0053] Reference Figure 3 and Figure 5 Specifically, in the embodiment of the present invention, multiple extension plates 47, motors 48 and cutting blades 49 are provided, and the extension plates 47 on the same side have the same height.

[0054] In the embodiment of the present invention, during cutting, the cutting blades 49 on the same side of the U-shaped plate 43 are ensured to complete cutting at the same time, thereby ensuring stable and synchronous cutting after the sheet is released.

[0055] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A beam mould based on prestressing method for easy transportation, characterized in that: include: A fixed crossbeam (1) having a pedestal (3) fixedly connected to one side thereof, and side panels (11) detachably connected to both sides of the top of the pedestal (3); A tensioning mechanism (2) arranged on the fixed crossbeam (1); A tensioning mechanism (4) is arranged inside the fixed crossbeam (1), the tensioning mechanism (4) comprising a connecting plate (42) and a U-shaped plate (43), the outer top wall of the fixed crossbeam (1) is fixedly connected to a cylinder (41), the output shaft of the cylinder (41) is fixedly connected to the connecting plate (42), the U-shaped plate (43) is fixedly connected to the bottom end of the connecting plate (42), the inner walls on both sides of the U-shaped plate (43) are provided with sliding grooves, the sliding grooves are slidably connected to racks (44), and the two A rotating rod (45) rotatably connected to the U-shaped plate (43) is arranged between the racks (44); a gear (46) meshing with the racks (44) is coaxially fixedly connected to the outer wall of the rotating rod (45); a cavity-shaped extension plate (47) is fixedly connected to the side of the rack (44) away from the gear (46); the extension plate (47) passes through the U-shaped plate (43) and is fixedly connected to the inside of the extension plate (47); and a cutting blade (49) is fixedly connected to the output shaft of the motor (48).

2. The prestressed beam mold for easy transportation based on pre-tensioning method according to claim 1 is characterized in that: The tensioning mechanism (2) comprises a jack (21), a movable crossbeam (22), a tie rod (23) and an anchor (24); the jack (21) is fixedly connected to a side of the fixed crossbeam (1) away from the pedestal (3); the output end of the jack (21) is fixedly connected to the movable crossbeam (22); the tie rod (23) passes through the movable crossbeam (22) and one end of the tie rod is connected to the prestressed tendon; a plurality of anchors (24) are provided, one part of which is connected to one end of the tie rod (23) and is located on a side of the movable crossbeam (22) away from the fixed crossbeam (1); and the other part of the anchors (24) is connected between the tie rod (23) and the prestressed tendon.

3. The beam mold based on prestressing method and convenient for transportation according to claim 2 is characterized in that: The connection between the pull rod (23) and the prestressed tendon is located between the fixed crossbeam (1) and the movable crossbeam (22).

4. The prestressed beam mold for easy transportation based on pre-tensioning method according to claim 1 is characterized in that: The top side of the side plate (11) is detachably covered with an upper cover plate (12), a port sealing plate (13) is detachably provided between the two side plates (11), and one end of the prestressed steel bar penetrating the port sealing plate (13) is detachably connected with a fixed end anchor bolt (14).

5. The prestressed beam mold for easy transportation based on pre-tensioning method according to claim 1 is characterized in that: The outer wall of the side plate (11) is fixedly connected to a vertical rod (31), a connecting rod (32) is connected between the two vertical rods (31), and a bolt (34) is rotatably connected to the connecting rod (32).

6. The prestressed beam mold for easy transportation based on pre-tensioning method according to claim 1 is characterized in that: A plurality of lifting ears (33) are fixedly connected to the top end of the side plate (11).

7. The prestressed beam mold for easy transportation based on pre-tensioning method according to claim 1 is characterized in that: The bottom of the fixed cross beam (1) is an open structure.

8. The prestressed beam mold for transportation based on pretensioning method according to claim 1 is characterized in that: The extension plate (47), the motor (48) and the cutting blade (49) are all provided in plurality, and the extension plates (47) on the same side have the same height.

Images