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CN-224224156-U - Rectangular section controllable expansion limit air sac internal mold

CN224224156UCN 224224156 UCN224224156 UCN 224224156UCN-224224156-U

Abstract

The utility model relates to the field of concrete templates, in particular to a rectangular section controllable expansion limiting air bag inner die which comprises an inner frame, wherein two groups of supporting frames are fixedly connected to the inner bottom wall of the inner frame, an inner frame fixedly connected to the inner top wall of the inner frame is arranged between the two groups of supporting frames, a positioning inner column is fixedly connected to the inner wall of the inner frame, the end part of the positioning inner column penetrates through the outer part of the inner frame and extends to the inner part of the inner frame, a supporting mechanism is arranged outside the inner frame, the inner die section is subjected to relatively good adjustment supporting operation, the device enables a supporting flat plate to form relatively stable supporting effect on the outer part through a plurality of first air bags, and under the cooperation of arc-shaped connecting angles and second air bags, relatively good radians are formed at corners, the supporting shape can be properly adjusted, the influence of inconvenient replacement of the inner die is reduced, and the working efficiency is improved.

Inventors

  • FENG HAIYING
  • HU YAOHUI
  • QIN HAOJIAO
  • LIU YUANYUAN
  • LIU XINFANG

Assignees

  • 天津市泽琪水泥构件有限公司

Dates

Publication Date
20260512
Application Date
20250506

Claims (7)

  1. 1. Rectangular section controllable inflation limiting gasbag centre form, its characterized in that includes: The inner frame (1), the inner bottom wall of the inner frame (1) is fixedly connected with two groups of supporting frames (11), an inner frame (21) fixedly connected to the inner top wall of the inner frame (1) is arranged between the two groups of supporting frames (11), the inner wall of the inner frame (21) is fixedly connected with a positioning inner column (2), and the end part of the positioning inner column (2) penetrates through the outer part of the inner frame (21) and extends to the inner part of the inner frame (1); The supporting mechanism (3) is arranged outside the inner frame (1); the support mechanism (3) comprises a support component (31) arranged on the surface of the inner frame (1), a positioning component (32) is arranged in the support component (31), the positioning component (32) is arranged on the surface of the positioning inner column (2), and the end part of the positioning component (32) away from the positioning inner column (2) is connected with the surface of the support component (31).
  2. 2. The rectangular section controllable expansion limit air bag inner mold according to claim 1, wherein the supporting component (31) comprises a plurality of supporting inner arches (311) which are arranged on the surface of the inner frame (1), guide arc rings (312) are embedded and arranged on the surface of the supporting inner arches (311) far away from the inner frame (1), the supporting inner arches (311) are uniformly distributed in a ring shape along the surface of the inner frame (1), first air bags (313) are arranged between adjacent supporting inner arches (311), and the first air bags (313) are fixedly connected to the surface of the inner frame (1).
  3. 3. The rectangular section controllable expansion limit air bag inner mold according to claim 2, wherein the positioning assembly (32) comprises a plurality of first electro-hydraulic push rods (321) which are respectively and fixedly connected with the upper end and the lower end of the positioning inner column (2), the telescopic ends of the first electro-hydraulic push rods (321) are fixedly connected with a connecting transverse plate (322), the other side of the connecting transverse plate (322) is fixedly connected with a longitudinal connecting rod (323), the longitudinal connecting rod (323) is fixedly connected with the surface of the supporting assembly (31), and both ends of the connecting transverse plate (322) are provided with end grooves (324).
  4. 4. The inner mold of a rectangular section controllable expansion limit air bag as set forth in claim 3, wherein the positioning assembly (32) further comprises two second electro-hydraulic push rods (326) fixedly connected to the end parts of the positioning inner columns (2), and the telescopic ends of the second electro-hydraulic push rods (326) are fixedly connected with connecting longitudinal plates (327).
  5. 5. The inner die of the rectangular section controllable expansion limit air bag of claim 2, wherein a supporting plate (314) is fixedly connected to the surface of the first air bag (313) far away from the inner frame (1), and an arc-shaped connecting angle (315) is connected between every two adjacent supporting plates (314).
  6. 6. The inner mold of a rectangular section controlled expansion limit air bag as set forth in claim 4, wherein said connecting longitudinal plate (327) is slidably connected to an inner wall of an adjacent end portion groove (324), and a transverse connecting rod (325) is fixedly connected to the other end of said connecting longitudinal plate (327).
  7. 7. The inner die of the rectangular section controllable expansion limit air bag of claim 5, wherein a second air bag (316) is fixedly connected to the inner side of the arc-shaped connecting angle (315), and the surface of the second air bag (316) is in contact with the surface of the inner frame (1).

Description

Rectangular section controllable expansion limit air sac internal mold Technical Field The utility model relates to the field of concrete templates, in particular to a rectangular section controllable expansion limit air bag inner die. Background The precast concrete box girder is one of the middle girders of bridge engineering, the inside of the precast concrete box girder is hollow, wing plates are arranged at two sides of the upper part of the precast concrete box girder, and the precast concrete box girder is similar to boxes, so that names, single boxes, multiple boxes and the like are obtained, and an inner template and an outer template matched with the structure of the precast concrete box girder are required to be used in the pouring process; Through retrieving "a concrete beam prefabricated box that prevents centre form come-up" among the prior art, bulletin number is "CN213593223U", and the device is provided with screw-thread steel, extrusion pole, gag lever post and spacing groove, makes the extrusion pole can be applicable to the centre form piece of more types with the extrusion pole of adjustable length like this, but the device is in the use, because the centre form needs to be changed to different service conditions, leads to the centre form to change inconveniently, influences work efficiency. Therefore, a rectangular section controllable expansion limit air bag inner mold is provided to solve the problems. Disclosure of utility model The utility model aims to provide the rectangular section controllable expansion limit air bag internal mold for solving the problems, and the problems that the internal mold is inconvenient to replace and the working efficiency is affected because the internal mold needs to be replaced according to different using conditions in the using process are solved. The inner frame is fixedly connected with two groups of supporting frames, an inner frame fixedly connected with the inner top wall of the inner frame is arranged between the two groups of supporting frames, the inner wall of the inner frame is fixedly connected with a positioning inner column, the end part of the positioning inner column penetrates through the outer part of the inner frame and extends to the inner part of the inner frame, the supporting mechanism is arranged outside the inner frame, the supporting mechanism comprises a supporting component arranged on the surface of the inner frame, a positioning component is arranged inside the supporting component, the positioning component is arranged on the surface of the positioning inner column, and the end part of the positioning component far away from the positioning inner column is connected with the surface of the supporting component. Preferably, the support assembly comprises a plurality of support arches arranged on the surface of the inner frame, guide arc rings are embedded and arranged on the surfaces of the support arches far away from the inner frame, the support arches are annularly and uniformly distributed along the surface of the inner frame, first air bags are arranged between adjacent support arches, and the first air bags are fixedly connected to the surface of the inner frame. Wherein one end of the first air bag is provided with an inflation inlet, and the inflation inlet is in gas supplementation with the air pump through an external pipeline. The support inner arch is formed by combining two S-shaped arc plates, the two arc plates are mutually matched and combined to form an arch support, and guide arc rings connected through the surface embedding of the arc plates are combined to form a circular tube shape, wherein the longitudinal section of the guide arc ring is semicircular. Preferably, the positioning assembly comprises a plurality of first electro-hydraulic push rods which are respectively and fixedly connected with the upper end and the lower end of the positioning inner column, the telescopic end of each first electro-hydraulic push rod is fixedly connected with a connecting transverse plate, the other side of each connecting transverse plate is fixedly connected with a longitudinal connecting rod, the longitudinal connecting rods are fixedly connected with the surface of the supporting assembly, and the two ends of each connecting transverse plate are respectively provided with an end groove. Electro-hydraulic push rods typically do not contract unexpectedly in the absence of an electrical power supply. A pressure self-locking mechanism is designed in the oil way integrated block, when the motor stops rotating, the piston rod can immediately stay at the current position, and pressure oil is kept in a pressure maintaining state. This means that the push rod position is locked and does not retract itself by power failure. Preferably, the positioning assembly further comprises two second electro-hydraulic push rods which are respectively and fixedly connected with the end parts of the positioning inner columns, and th