Bolt type fixing device for expansion joint shaped steel formwork
By using fixed steel formwork pin fixing devices on both sides of the expansion joint, the problem of easy running of traditional extruded boards is solved, and the stability of the formwork and the quality of concrete forming during concrete pouring are improved.
Patent Information
- Application Number
- CN202421972149.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-15
AI Technical Summary
When concrete is poured on both sides of expansion joints of high-rise buildings, traditional extruded boards are prone to run, making it difficult to control the concrete forming quality.
The expansion joint fixed steel formwork pin type fixing device is adopted, which includes inner formwork, outer formwork, casing, reinforcement rod, locking ring, sliding bolt, locking rib and fastener. Through the synergy of these components, the formwork is fixed and resists the pressure of concrete to prevent the mold from running.
It effectively ensures the stability of the formwork when pouring the wall concrete on both sides of the expansion joint, avoids the problem of mold running, and improves the molding quality of structural wall concrete.
Smart Images
Figure CN222976383U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of construction engineering devices, and in particular to a latch-type fixing device for a shaped steel formwork for an expansion joint. Background Art
[0002] In order to prevent crack damage caused by temperature changes, high-rise buildings usually have expansion joints along the length of the building. The width of the joints is usually between 200mm and 300mm, which makes it difficult to cast the structural walls on both sides of the expansion joints.
[0003] In traditional technology, extruded boards are often buried in expansion joints, and then concrete is poured on the structural walls on both sides of the expansion joints. However, during the concrete pouring and vibration operations, the extruded boards are prone to run, and the quality of the concrete molding of the structural walls is difficult to control. Utility Model Content
[0004] In order to avoid the movement of the mold as much as possible during concrete pouring and vibration operations and improve the molding quality of structural wall concrete, the present application provides a pin-type fixing device for expansion joint shaped steel templates.
[0005] The present application provides a bolt-type fixing device for expansion joint shaped steel formwork, which adopts the following technical solution:
[0006] A latch-type fixing device for an expansion joint shaped steel template, comprising an inner template preset on a side of a wall close to the expansion joint, and an outer template preset on a side of the wall away from the expansion joint, a plurality of sleeves are vertically arranged between the inner template and the outer template, a reinforcement rod is inserted into the sleeve, a locking ring is fixedly arranged at one end of the reinforcement rod, the locking ring extends out of the sleeve with a vertical axis, a sliding plug is inserted into the locking ring, the bottom end of the sliding plug can be inserted into the ground, the sliding plug abuts against the outer side of the inner template, a locking rib is fixedly arranged at the other end of the reinforcement rod, the locking rib abuts against the outer side of the outer template, and a fastener connected to the ground is also arranged on the outer side of the outer template.
[0007] By adopting the above technical solution, when constructing the walls on both sides of the expansion joint, first install the inner formwork and the outer formwork, then insert the reinforcement rods into the sleeves, make the locking ribs abut against the outer side of the outer formwork, and then insert the sliding bolts into the locking rings from the top and make their bottom ends insert into the ground to fix the outer side of the inner formwork. At the same time, use fasteners to connect and fix the outer formwork to the ground, and the outer formwork and the inner formwork are respectively restricted by the ground; when pouring concrete, pour the concrete between the inner formwork and the outer formwork. The concrete exerts an outward pressure on the inner formwork and the outer formwork on both sides. One side of the reinforcement rod bears the pressure received by the inner formwork through the sliding bolt, and is further fastened to the ground through the sliding bolt to prevent the inner formwork from running. The other side of the reinforcement rod bears the pressure received by the outer formwork through the locking rib, and is further fastened to the ground through the fastener to prevent the outer formwork from running; thus effectively ensuring the stability of the formwork during the concrete pouring of the walls on both sides of the expansion joint, minimizing the problem of easy running of the extruded polystyrene board in the traditional technology, and improving the forming quality of the structural wall concrete.
[0008] Preferably, all the sleeves are arranged uniformly in the horizontal and vertical directions, and the sliding bolts penetrate through all the locking rings located in the same vertical direction at the same time.
[0009] By adopting the above technical solution, the uniform arrangement of the sleeves in the horizontal and vertical directions makes the distribution of the reinforcement rods more reasonable and uniform, and can better provide support and reinforcement functions. The sliding bolts penetrate through all the locking rings located in the same vertical direction at the same time, realizing the synchronous fixation of multiple reinforcement rods, improving the efficiency and convenience of the fixation operation, and at the same time making multiple reinforcement rods related to each other, enhancing the overall fixation effect and stability.
[0010] Preferably, the inner formwork is made of steel plate, and several steel keels are fixedly arranged on the outer side wall of the inner formwork, and the sliding bolts abut against the steel keels.
[0011] By adopting the above technical solution, using a steel plate for the inner formwork improves its strength and durability, and the steel keels further enhance the structural stability of the inner formwork, making the entire fixing device more stable and reliable. At the same time, it also reduces the obstruction when the sliding bolt penetrates the locking ring, so that when the sliding bolt penetrates the locking ring, it does not have to keep fitting with the outer side wall of the inner formwork all the time.
[0012] Preferably, the outer formwork is made of wood board, and several wooden secondary ribs are vertically and fixedly arranged on the outer side wall of the outer formwork. Several steel pipe main ribs are fixedly arranged together on all the wooden secondary ribs, and the steel pipe main ribs are arranged horizontally.
[0013] By adopting the above technical solutions, the outer formwork is made of wooden boards. The wooden boards have certain flexibility and adaptability, and are light in texture, making it convenient for the outer formwork to be adjusted according to the inner formwork. The setting of the wooden secondary ribs and steel pipe main ribs further enhances the structural strength and stability of the outer formwork, enabling it to better withstand the pressure and impact during concrete pouring, ensuring the smooth progress of construction and the quality of the wall.
[0014] Preferably, the locking bars are bent, and the inner side of the bent part of the locking bars abuts against the steel pipe main ribs, and all the locking bars in the same horizontal direction abut against the same steel pipe main rib.
[0015] By adopting the above technical solutions, the locking bars are bent and fit against the steel pipe main ribs, increasing the contact area and friction force, making the abutment of the locking bars against the outer formwork more stable and reliable. And the steel pipe main ribs lock the locking bars in the reverse direction, helping to prevent the reinforcement rod from twisting in the sleeve, ensuring that the axis direction of the locking ring is always vertical, and making it more convenient for the sliding bolt to be inserted. All the locking bars in the same horizontal direction abut against the same steel pipe main rib, further enhancing the overall reinforcement effect on the outer formwork and ensuring the stability of the outer formwork during the construction process.
[0016] Preferably, a guiding rounded corner is provided at the bottom of the sliding bolt, and a lifting ring is fixedly arranged at the top of the sliding bolt.
[0017] By adopting the above technical solutions, the setting of the guiding rounded corner facilitates the smoother insertion of the sliding bolt into the locking ring, reducing the insertion resistance. The setting of the lifting ring makes it convenient for the operator to lift the sliding bolt, making the disassembly of the sliding bolt more convenient and labor-saving, thus facilitating the quick installation and disassembly operation of the sliding bolt.
[0018] Preferably, the fastener includes a fastening bolt and a connecting block. The connecting block is fixedly arranged on the outer side wall of the outer formwork, and the connecting block is connected to the ground through the fastening bolt.
[0019] By adopting the above technical solutions, the connecting block is connected to the ground by using the fastening bolt, thereby realizing the fixed connection between the outer formwork and the ground. This connection method is relatively convenient, stable and reliable, and can effectively resist the external forces during construction such as concrete pouring, ensuring the stability of the position of the outer formwork, and further guaranteeing the construction quality and construction safety.
[0020] Preferably, a lifting ring is fixedly arranged at the top of the outer side wall of the inner formwork.
[0021] By adopting the above technical solutions, the lifting ring facilitates the hoisting and installation of the inner formwork. During the construction process, the inner formwork can be lifted by using the lifting ring and moved to the designated position for installation. And when operations such as adjusting or replacing the inner formwork are required, the lifting ring can be used as a convenient force application point for related operations.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. By setting the inner formwork, outer formwork, sleeve, reinforcement rod, locking ring, sliding plug, locking rib and fasteners, when pouring concrete on the walls on both sides of the expansion joint, the stability of the formwork is effectively guaranteed, the problem of possible mold movement is avoided as much as possible, and the molding quality of the structural wall concrete is improved;
[0024] 2. By setting up steel keels, secondary wooden beams and main steel pipe beams, the strength and stability of the inner and outer formworks are further enhanced. All locking ribs in the same horizontal direction are against the same main steel pipe beam, and all locking rings in the same vertical direction are penetrated by the same sliding bolt, which further improves the overall stability of the device.
[0025] 3. By setting the guide fillet and the lifting ring, it is easy to guide the sliding plug to be inserted into the locking ring more smoothly during installation, reducing the insertion resistance, and it is convenient for the operator to lift the sliding plug during disassembly, making the disassembly of the sliding plug more convenient and labor-saving, and facilitating the installation and disassembly of the sliding plug. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural schematic diagram of a latch-type fixing device for an expansion joint shaping steel formwork provided in an embodiment of the present application.
[0027] Figure 2 It is a structural schematic diagram of the outer side of the middle and outer template of a latch-type fixing device for an expansion joint shaping steel template provided in an embodiment of the present application.
[0028] Figure 3 It is a schematic diagram of the structure of the reinforcement rod provided in the embodiment of the present application.
[0029] Explanation of the reference numerals: 1. Inner formwork; 12. Steel keel; 13. Lifting ring; 2. Outer formwork; 22. Secondary wooden beam rib; 23. Main steel pipe rib; 3. Casing; 31. Reinforcement rod; 311. Locking ring; 312. Locking rib; 4. Sliding plug; 41. Guide fillet; 42. Lifting ring; 5. Fastener; 51. Fastening bolt; 52. Connecting block. DETAILED DESCRIPTION
[0030] The following is combined with Figures 1-3 This application is described in further detail.
[0031] The present application embodiment discloses a bolt-type fixing device for a steel template for expansion joints. Figure 1, which includes an inner formwork 1 preset on one side of the wall close to the expansion joint and an outer formwork 2 preset on the side of the wall away from the expansion joint. The inner formwork 1 is made of steel plate, and a number of steel keels 12 are fixedly arranged on the outer side wall of the inner formwork 1. The steel keels 12 can be welded to the outer side wall of the inner formwork 1 with deformed bars. A lifting ring 13 is also fixedly welded on the top of the outer side wall of the inner formwork 1.
[0032] Refer to Figure 2 , the outer formwork 2 is made of wood board, and a number of vertical and fixedly arranged wooden secondary ribs 22 are provided on the outer side wall of the outer formwork 2. A number of horizontally arranged steel pipe main ribs 23 are fixedly arranged on all the wooden secondary ribs 22 together. A fastener 5 connected to the ground is also provided on the outside of the outer formwork 2.
[0033] Refer to Figure 1 And Figure 2 , a number of enlarged holes are penetrated through both the inner formwork 1 and the outer formwork 2. The enlarged holes on the inner formwork 1 and the outer formwork 2 correspond to each other one by one. A sleeve 3 is inserted into each group of corresponding enlarged holes. The sleeve 3 can be a PVC pipe. The sleeve 3 is vertically arranged between the inner formwork 1 and the outer formwork 2, and all the sleeves 3 are uniformly arranged in the horizontal and vertical directions.
[0034] Refer to Figures 1 to 3 , a reinforcing rod 31 is arranged in the sleeve 3. One end of the reinforcing rod 31 is fixedly provided with a locking ring 311. The locking ring 311 extends out of the inner formwork 1 and its axis is vertical. A sliding bolt 4 is inserted into the locking ring 311. The sliding bolt 4 penetrates through all the locking rings 311 located in the same vertical direction at the same time, and the sliding bolt 4 can also be inserted into the ground. The sliding bolt 4 indirectly abuts against the outer side of the inner formwork 1 through the steel keel 12. The other end of the reinforcing rod 31 is fixedly provided with a locking rib 312. The locking rib 312 is bent. The inner side of the bent part of the locking rib 312 is attached to and abuts against the steel pipe main rib 23. All the locking ribs 312 located in the same horizontal direction abut against the same steel pipe main rib 23.
[0035] Refer to Figures 1 to 3 , before pouring the wall, first make fixed holes on the ground or set other fixing parts. Then connect the lifting ring 13 through a tower crane, lift the inner formwork 1 to the expansion joint position and make positioning, and then calibrate the positioning of the outer formwork 2 and the inner formwork 1. Through the preset enlarged holes, the sleeve 3 is perforated and embedded, and then the reinforcing rod 31 is stuffed into the sleeve 3 so that the locking ring 311 on the reinforcing rod 31 extends out of the inner formwork 1. At this time, the inner side of the bent part of the locking rib 312 is attached to and abuts against the steel pipe main rib 23, and the steel pipe main rib 23 locks the locking rib 312 in the reverse direction, preventing the reinforcing rod 31 from twisting in the sleeve and ensuring that the axis direction of the locking ring 311 is always vertical. Finally, insert threaded steel bars into all the locking rings 311 located in the same vertical direction from top to bottom, and insert the threaded steel bars into the fixed holes preset on the ground to complete the fixation of the inner formwork. Finally, the outer formwork 2 is reliably fixed through the fastener 5.
[0036] Referring to Figure 1 , when pouring concrete, the concrete is poured between the inner formwork 1 and the outer formwork 2, and the concrete exerts an outward pressure on the inner formwork 1 and the outer formwork 2 on both sides. One side of the reinforcing rod 31 bears the pressure received by the inner formwork 1 through the sliding bolt 4, and is further fastened to the ground through the sliding bolt 4. The other side of the reinforcing rod 31 bears the pressure received by the outer formwork 2 through the locking rib 312, and is further fastened to the ground through the fastener 5. In this way, the problem of the formwork running away is avoided as much as possible, and the forming quality of the concrete of the structural wall is improved.
[0037] For the convenience of the installation and disassembly of the sliding bolt 4, referring to Figure 1 , a guiding fillet 41 is provided at the bottom of the sliding bolt 4, which is convenient for guiding the sliding bolt 4 to be inserted into the locking ring 311 more smoothly, reducing the insertion resistance. A lifting ring 42 is fixedly arranged at the top of the sliding bolt 4, which is convenient for the operator to perform a lifting operation on the sliding bolt 4, making the disassembly of the sliding bolt 4 more convenient and labor-saving.
[0038] To achieve the fixed connection between the outer formwork 2 and the ground, referring to Figure 2 , the fastener 5 includes a fastening bolt 51 and a connecting block 52. The connecting block 52 is fixedly arranged on the outer side wall of the outer formwork 2, and the connecting block 52 is connected to the ground through the fastening bolt 51. Thus, the fixed connection between the outer formwork 2 and the ground is achieved.
[0039] In addition, the lifting ring 42 and the sliding bolt 4 can be made by cold bending a round steel, which is convenient for obtaining materials locally during the construction process.
[0040] The implementation principle of the plug-in fixing device for the expansion joint sizing steel formwork in the embodiment of the present application is as follows: Before pouring the wall, first open fixing holes on the ground. The tower crane hoists the inner formwork 1 to the expansion joint position through the lifting ring 13, and then calibrates the outer formwork 2 and the inner formwork 1. Then, after pre-burying the sleeve 3 in the corresponding reamed hole, the reinforcing rod 31 is inserted into the sleeve 3, and the locking ring 311 extends out of the inner formwork 1. At this time, the bent part of the locking rib 312 abuts against and is in contact with the steel pipe main rib 23 to prevent the reinforcing rod 31 from twisting and ensure that the axis of the locking ring 311 is vertical. Then, a threaded steel bar is inserted into the locking ring 311 from top to bottom to the ground fixing hole to complete the fixation of the inner form. Finally, the connecting block 52 is connected to the ground through the fastening bolt 51.
[0041] During the concrete pouring, the concrete is poured between the inner formwork 1 and the outer formwork 2, and the concrete exerts an outward pressure on the inner formwork 1 and the outer formwork 2 on both sides. One side of the reinforcement rod 31 bears the pressure received by the inner formwork 1 through the sliding bolt 4, and is further fastened to the ground through the sliding bolt 4. The other side of the reinforcement rod 31 bears the pressure received by the outer formwork 2 through the locking rib 312, and is further fastened to the ground through the fastener 5. In this way, the problem of the formwork running is avoided as much as possible, and the forming quality of the concrete of the structural wall is improved.
[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A bolt-type fixing device for expansion joint shaped steel template, comprising an inner template (1) preset on a side of a wall body close to the expansion joint, and an outer template (2) preset on a side of the wall body away from the expansion joint, characterized in that: A plurality of sleeves (3) are vertically arranged between the inner template (1) and the outer template (2), a reinforcing rod (31) is inserted into the sleeve (3), a locking ring (311) is fixedly arranged at one end of the reinforcing rod (31), the locking ring (311) extends out of the sleeve and has a vertical axis, a sliding plug (4) is inserted into the locking ring (311), the bottom end of the sliding plug (4) can be inserted into the ground, the sliding plug (4) abuts against the outer side of the inner template (1), a locking rib (312) is fixedly arranged at the other end of the reinforcing rod (31), the locking rib (312) abuts against the outer side of the outer template (2), and a fastener (5) connected to the ground is also arranged on the outer side of the outer template (2).
2. The bolt-type fixing device for expansion joint shaped steel formwork according to claim 1 is characterized in that: All the sleeves (3) are evenly arranged in the horizontal and vertical directions, and the sliding plug (4) simultaneously penetrates all the locking rings (311) located in the same vertical direction.
3. The bolt-type fixing device for expansion joint shaped steel formwork according to claim 1 is characterized in that: The inner template (1) is a steel plate, and a plurality of steel keels (12) are fixedly arranged on the outer side wall of the inner template (1), and the sliding plug (4) abuts against the steel keels (12).
4. The bolt-type fixing device for expansion joint shaped steel formwork according to claim 1 is characterized in that: The outer formwork (2) is a wooden board, and a plurality of wooden secondary ribs (22) are vertically and fixedly arranged on the outer side wall of the outer formwork (2), and a plurality of steel pipe main ribs (23) are fixedly arranged on all the wooden secondary ribs (22), and the steel pipe main ribs (23) are arranged horizontally.
5. The bolt-type fixing device for expansion joint shaped steel template according to claim 4 is characterized in that: The locking ribs (312) are bent, and the inner side of the bent part of the locking ribs (312) abuts against the main ribs (23) of the steel pipe. All the locking ribs (312) located in the same horizontal direction abut against the same main rib (23) of the steel pipe.
6. The bolt-type fixing device for expansion joint shaped steel formwork according to claim 1, characterized in that: A guide fillet (41) is provided at the bottom of the sliding plug (4), and a lifting ring (42) is fixedly provided at the top of the sliding plug (4).
7. The bolt-type fixing device for expansion joint shaped steel formwork according to claim 1, characterized in that: The fastener (5) comprises a fastening bolt (51) and a connecting block (52); the connecting block (52) is fixedly arranged on the outer side wall of the outer template (2); and the connecting block (52) is connected to the ground via the fastening bolt (51).
8. The bolt-type fixing device for expansion joint shaped steel formwork according to claim 1, characterized in that: A hanging ring (13) is fixedly provided on the top of the outer side wall of the inner template (1).