Movable telescopic steel frame

By introducing a retractable steel frame design into the building formwork bracket, the height adjustment and portability are achieved by rotating double-headed screws and universal wheels, the problem of insufficient height adjustment in the prior art is solved, and construction efficiency and safety are improved .

CN222295691UActive Publication Date: 2025-01-03SHANGHAI MINGYUAN METAL STRUCTURE COMPLETE SET CO LTD
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Patent Information

Application Number
CN202421097252.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-20
Publication Date
2025-01-03
Estimated Expiration
2034-05-20

AI Technical Summary

Technical Problem

The existing building formwork support devices lack height adjustment function and are difficult to adapt to formwork support at different heights, which affects construction efficiency and quality.

Method used

A mobile retractable steel frame is designed, using a rotating double-headed screw and a lifting universal wheel. The support plate and the top plate are driven to move simultaneously to adjust the height through the double-headed screw, and the universal wheel is used to achieve portability. and stability.

Benefits of technology

It improves the flexibility, adaptability and stability of the steel frame, enhances the support effect of the formwork, ensures the support and fixation of formwork at different heights, and improves construction efficiency and safety.

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Abstract

The utility model relates to the technical field of buildings, in particular to a movable telescopic steel frame which comprises a steel frame body. A liftable top plate is arranged above the fixing plate, connecting rods are fixed to the two ends of the bottom of the top plate, and the connecting rods penetrate through the fixing plate and are in sliding connection with the fixing plate; a double-end lead screw is rotationally installed between the two side supports, two supporting plates capable of synchronously and relatively moving are arranged above the double-end lead screw, a connecting base is hinged to the bottom end of each supporting plate, and each connecting base is in threaded connection with a threaded groove in the corresponding double-end lead screw; according to the steel frame, a double-end lead screw is rotated to enable two connecting bases to synchronously and relatively move, the connecting bases can drive two supporting plates to synchronously and relatively move, the supporting plates move to drive a top plate to stretch out and draw back, and templates with different heights can be supported and fixed through the top plate along with stretching out and drawing back of the top plate; by means of the design, the flexibility and adaptability of the steel frame are improved, the stability and safety of the steel frame are enhanced, and the supporting effect on the formwork is guaranteed.
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Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a movable telescopic steel frame. Background Art

[0002] During the construction process, the steel frame is an important structure supporting the formwork. The main function of the steel frame supporting the formwork is to bear the various loads generated during the construction process, including the dead weight of the concrete, the active load of the construction workers, and the weight of the construction equipment, so as to ensure the quality and safety of the construction; therefore, the steel frame is particularly necessary for construction safety.

[0003] The utility model patent with authorization announcement number CN219261756U discloses a building formwork support device, which includes a vertical pole, the bottom of the vertical pole is connected with a sleeve by a screw sleeve, a cross bar is horizontally arranged in the middle of two groups of adjacent vertical poles, and joints are fixedly installed at both ends of the cross bar; a buckle plate, the surface outer wall of the vertical pole is provided with a buckle plate, and the inside of the buckle plate is provided with a groove consistent with the size of the joint, and the joint is inserted in the groove of the buckle plate; a connecting plate, the top of the vertical pole is equipped with a connecting plate, and the inside of the connecting plate is fixedly equipped with a fixing block, a main beam is installed above the connecting plate, and a fixing groove is provided at the bottom of the main beam, a groove is provided at the top of the main beam, the top of the main beam is connected to the sub-beam by screws, and the bottom of the sub-beam is embedded in the groove. By connecting a sleeve through screws on the outside of the bottom of the vertical pole, and by fixing supporting feet around the sleeve, and by connecting the supporting feet to the ground through screws, the sleeve can be fixed to the ground, and by inserting the vertical pole into the sleeve, the position of the vertical pole can be fixed, so that the vertical pole will not deviate from its original position during the construction process, thereby ensuring the precision of the construction work.

[0004] Although the building formwork support device ensures the precision of the construction work, it still has some shortcomings in actual use. Specifically, the device lacks the function of height adjustment, which is particularly inconvenient when supporting formworks of different heights. Since the height of the support cannot be flexibly adjusted, construction workers often find it difficult to adapt to formworks of different heights, which not only affects the construction efficiency, but also may have a certain impact on the construction quality. In view of this, we propose a mobile retractable steel frame. Utility Model Content

[0005] The purpose of the utility model is to provide a movable retractable steel frame to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A movable retractable steel frame comprises a steel frame;

[0008] The steel frame includes two symmetrical bases, the front and rear ends of the bases are transparent, the bottom of the bases are provided with two notches, a movable plate that can be raised and lowered is installed in the inner cavity of the bases, and two universal wheels are fixed at the bottom of the movable plate;

[0009] A support is fixed at the top center of the base, and two detachable pull plates are arranged between the two supports, and the two pull plates are arranged crosswise;

[0010] A fixed plate is fixed between the top ends of the two supports, and two side brackets are fixed on the top of the fixed plate; a liftable top plate is provided above the fixed plate, and connecting rods are fixed at both ends of the bottom of the top plate, and the connecting rods pass through the fixed plate and are slidably connected to the fixed plate; a double-headed screw is rotatably installed between the two side brackets, and two support plates that can move synchronously relative to each other are provided above the double-headed screw, a connecting seat is hinged at the bottom end of the support plate, and the connecting seat is threadedly connected to the threaded groove on the double-headed screw, a hinge seat is hinged at the top end of the support plate, and the hinge seat is fixedly connected to the bottom of the fixed plate.

[0011] Preferably, a threaded rod is threadedly connected to the movable plate, the bottom end of the threaded rod is rotatably connected to the inner bottom of the base through a bearing, and the top end of the threaded rod passes through the outside and is coaxially fixed with a hand wheel.

[0012] Preferably, a guide rod is fixedly connected to the inner cavity of the base via bolts, and the guide rod passes through the movable plate and is slidably connected to the movable plate.

[0013] Preferably, a reinforcing plate is fixed between the two bases, and both ends of the reinforcing plate are fixedly connected to the bases by bolts.

[0014] Preferably, the two pull plates are an integrally formed structure, and the pull plates are manufactured from galvanized steel.

[0015] Preferably, an adjusting roller is coaxially keyed at the center of the double-headed screw, and an anti-slip groove is provided on the outer wall of the adjusting roller.

[0016] Preferably, the ends of the pull plates are tightly welded with mounting plates, the mounting plates are tightly welded with threaded columns, the threaded columns pass through the supports, and the ends of the threaded columns are threadedly connected with nuts.

[0017] Preferably, the cross-sectional shape of the side bracket is U-shaped, and the end of the double-headed screw is rotatably connected to the side bracket via a bearing.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. Through the steel frame: rotating the double-headed screw makes the two connecting seats move relative to each other synchronously, and the connecting seats can drive the two supporting plates to move relative to each other synchronously. The movement of the supporting plates drives the top plate to expand and contract. With the expansion and contraction of the top plate, the top plate can support and fix the templates of different heights. This design not only improves the flexibility and adaptability of the steel frame, but also enhances its stability and safety, ensuring the supporting effect of the template;

[0020] 2. The universal wheels that can be raised and lowered are provided, which not only facilitates the movement of the device through the universal wheels, thus improving the portability of the device, but also facilitates the storage of the universal wheels to ensure the stability and reliability of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is one of the schematic diagrams of a partial explosion structure in the utility model;

[0023] Figure 3 This is a structural cross-sectional view of the base in the utility model;

[0024] Figure 4 It is a partial structural schematic diagram of the utility model;

[0025] Figure 5 This is the second schematic diagram of the partial explosion structure in the utility model.

[0026] In the figure:

[0027] 1. Steel frame; 10. Base; 101. Notch; 102. Guide rod; 103. Reinforcement plate; 11. Movable plate; 12. Threaded rod; 121. Handwheel; 13. Universal wheel; 14. Support; 15. Pull plate; 151. Mounting plate; 152. Threaded column; 153. Nut; 16. Fixed plate; 161. Side bracket; 17. Top plate; 171. Connecting rod; 18. Double-headed screw; 181. Adjusting roller; 19. Support plate; 191. Connecting seat; 192. Hinge seat. DETAILED DESCRIPTION

[0028] 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.

[0029] This embodiment provides a technical solution:

[0030] See also Figure 1-Figure 5A movable and retractable steel frame includes a steel frame 1. The steel frame 1 includes two symmetrical bases 10, the front and rear ends of the base 10 are transparent, and two notches 101 are provided at the bottom of the base 10. A movable plate 11 that can be lifted and lowered is installed in the inner cavity of the base 10, and two universal wheels 13 are fixed to the bottom of the movable plate 11; a support 14 is fixed at the top center of the base 10, and two detachable pull plates 15 are arranged between the two supports 14, and the two pull plates 15 are arranged crosswise; a fixed plate 16 is fixed between the top ends of the two supports 14, and the two ends of the support 14 are respectively fixedly connected to the fixed plate 16 and the base 10 by bolts, and two side brackets 161 are fixed to the top of the fixed plate 16; A liftable top plate 17 is provided above the fixed plate 16, and connecting rods 171 are fixed at both ends of the bottom of the top plate 17, which pass through the fixed plate 16 and are slidably connected to the fixed plate 16; a double-headed screw 18 is rotatably installed between the two side brackets 161, and two support plates 19 that can move synchronously relative to each other are provided above the double-headed screw 18, a connecting seat 191 is hinged at the bottom end of the support plate 19, and the connecting seat 191 is threadedly connected to the threaded groove on the double-headed screw 18, a hinge seat 192 is hinged at the top end of the support plate 19, and the hinge seat 192 is fixedly connected to the bottom of the fixed plate 16, and the hinge seat 192 is fixedly connected to the bottom of the fixed plate 16 by bolts.

[0031] Preferably, a threaded rod 12 is threadedly connected to the movable plate 11, the bottom end of the threaded rod 12 is rotatably connected to the inner bottom of the base 10 through a bearing, and the top end of the threaded rod 12 is extended to the outside and coaxially fixed with a hand wheel 121. By rotating the threaded rod 12, it is convenient to drive the movable plate 11 to rise and fall, and then it is convenient to drive the universal wheel 13 to rise and fall.

[0032] Preferably, a guide rod 102 is fixedly connected to the inner cavity of the base 10 by bolts, and the guide rod 102 passes through the movable plate 11 and is slidably connected to the movable plate 11. The setting of the guide rod 102 guides the lifting and lowering of the movable plate 11, ensuring that the movable plate 11 is stable.

[0033] Preferably, a reinforcing plate 103 is fixed between the two bases 10, and both ends of the reinforcing plate 103 are fixedly connected to the base 10 by bolts. The provision of the reinforcing plate 103 increases the connection strength between the two bases 10.

[0034] Preferably, the two pull plates 15 are integrally formed, and the pull plates 15 are made of galvanized steel. The integrally formed pull plates 15 have better connection strength, and improve the fixing effect of the pull plates 15 on the supports 14 on both sides.

[0035] Preferably, the center of the double-ended screw 18 is coaxially keyed to an adjusting roller 181, and an anti-slip groove is provided on the outer wall of the adjusting roller 181. This design facilitates the rotation of the double-ended screw 18, and the operation is convenient and quick.

[0036] Preferably, the ends of the pull plates 15 are tightly welded with mounting plates 151, the mounting plates 151 are tightly welded with threaded columns 152, the threaded columns 152 pass through the support 14, and the ends of the threaded columns 152 are threadedly connected with nuts 153. This design facilitates the assembly of the pull plates 15, and the installation is firm and stable.

[0037] Preferably, the cross-section of the side bracket 161 is U-shaped, and the end of the double-ended screw rod 18 is rotatably connected to the side bracket 161 through a bearing. The setting of the side bracket 161 supports the double-ended screw rod 18 and ensures the stability of the double-ended screw rod 18.

[0038] It can be understood that the gap 101 is located directly below the universal wheel 13 , and the universal wheel 13 can pass through the gap 101 normally when the universal wheel 13 is raised or lowered.

[0039] It should be added that the threaded grooves at both ends of the double-headed screw 18 in this embodiment have opposite thread winding directions. When the double-headed screw 18 rotates, the two connecting seats 191 can move relative to each other synchronously, which is convenient for driving the support plate 19 to move relative to each other synchronously, and then convenient for driving the top plate 17 to rise and fall.

[0040] During specific use, the user first rotates the adjusting roller 181, and the adjusting roller 181 drives the double-headed screw 18 to rotate. As the double-headed screw 18 rotates, the two connecting seats 191 move inwardly relative to each other synchronously, and the connecting seat 191 drives the support plate 19 to move at the same time, and the support plate 19 drives the top plate 17 to move upward. When the top plate 17 moves to a suitable height, the user stops rotating the adjusting roller 181, and the height adjustment of the top plate 17 is completed.

[0041] When the universal wheel 13 is needed to move the steel frame 1, the user first holds the hand wheel 121 and turns it, and the hand wheel 121 drives the threaded rod 12 to rotate. As the threaded rod 12 rotates, the movable plate 11 moves downward along the guide rod 102, and the movable plate 11 drives the universal wheel 13 to move downward and pass through the notch 101. When the movable plate 11 is pressed against the inner bottom of the base 10, the user stops turning the hand wheel 121.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A mobile and retractable steel frame, comprising a steel frame (1), characterized in that: The steel frame (1) comprises two symmetrical bases (10), the front and rear ends of the bases (10) are transparent, the bottom of the bases (10) is provided with two notches (101), a movable plate (11) that can be raised and lowered is installed in the inner cavity of the bases (10), and two universal wheels (13) are fixed at the bottom of the movable plate (11); A support (14) is fixed at the top center of the base (10), two detachable pull plates (15) are arranged between the two supports (14), and the two pull plates (15) are arranged crosswise; A fixing plate (16) is fixed between the top ends of the two supports (14), and two side brackets (161) are fixed on the top of the fixing plate (16); a liftable top plate (17) is provided above the fixing plate (16), and connecting rods (171) are fixed at both ends of the bottom of the top plate (17), and the connecting rods (171) pass through the fixing plate (16) and are slidably connected to the fixing plate (16); a double-headed screw rod (18) is rotatably installed between the two side brackets (161), and two supporting plates (19) that can move synchronously relative to each other are provided above the double-headed screw rod (18), a connecting seat (191) is hinged at the bottom end of the supporting plate (19), and the connecting seat (191) is threadedly connected to the thread groove on the double-headed screw rod (18), and a hinge seat (192) is hinged at the top end of the supporting plate (19), and the hinge seat (192) is fixedly connected to the bottom of the fixing plate (16).

2. The movable retractable steel frame according to claim 1 is characterized in that: A threaded rod (12) is threadedly connected to the movable plate (11), the bottom end of the threaded rod (12) is rotatably connected to the inner bottom of the base (10) via a bearing, and the top end of the threaded rod (12) extends out to the outside and is coaxially fixed with a hand wheel (121).

3. The movable retractable steel frame according to claim 1 is characterized in that: A guide rod (102) is also fixedly connected to the inner cavity of the base (10) via bolts, and the guide rod (102) passes through the movable plate (11) and is slidably connected to the movable plate (11).

4. The movable retractable steel frame according to claim 1, characterized in that: A reinforcing plate (103) is fixed between the two bases (10), and two ends of the reinforcing plate (103) are fixedly connected to the base (10) via bolts.

5. The movable retractable steel frame according to claim 1, characterized in that: The two pull plates (15) are an integrally formed structure, and the pull plates (15) are manufactured products made of galvanized steel.

6. The movable retractable steel frame according to claim 1, characterized in that: An adjusting roller (181) is coaxially keyed at the center of the double-headed screw rod (18), and an anti-slip groove is provided on the outer wall of the adjusting roller (181).

7. The movable retractable steel frame according to claim 1, characterized in that: The ends of the pull plates (15) are tightly welded with mounting plates (151), the mounting plates (151) are tightly welded with threaded columns (152), the threaded columns (152) pass through the support (14), and the ends of the threaded columns (152) are threadedly connected with nuts (153).

8. The movable retractable steel frame according to claim 1, characterized in that: The cross-sectional shape of the side bracket (161) is U-shaped, and the end of the double-ended screw rod (18) is rotatably connected to the side bracket (161) via a bearing.