Adjustable steel bar rack

Abstract

The utility model provides an adjustable steel bar rack, which belongs to the technical field of tunnel construction, and comprises a bottom frame, moving wheels, a steel frame, a top frame fixed at the top end of the bottom frame, and stretching structures arranged at the two sides of the steel frame, the lifting structure comprises a connecting sleeve fixed to one side of the bottom frame, a supporting plate fixed to the bottom end of the supporting stand column and locking assemblies arranged on the two sides of the supporting stand column. The hydraulic cylinder stretches to push the steel frame to move upwards, the overall height of the device is adjusted, the double-output-shaft motor is started to drive the screw to rotate, and the position of the connecting sleeve is locked, so that the height adjusting function of the device is achieved, the device can adapt to variable clearance heights of different mileage sections of a high-speed rail tunnel, construction feasibility is guaranteed, and construction universality is improved; the rack is prevented from being frequently replaced or transformed due to tunnel height difference, and cost and time are saved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to an adjustable rebar support. Background Technology

[0002] High-speed railway tunnels are a crucial component of modern railway transportation. Their construction involves complex engineering technologies, construction methods, and environmental impacts. To facilitate the installation of tunnel reinforcement bars, reinforcement support platforms are needed to provide a stable operating platform for the installation, effectively improving construction efficiency and ensuring accurate positioning of the reinforcement bars. These platforms also enhance construction safety, reducing the risks associated with workers operating at heights. Their significance lies in helping to ensure the quality of the reinforcement construction for open-cut tunnel linings, ensuring that the reinforcement arrangement meets design requirements.

[0003] The following shortcomings still exist: Since the dimensions of tunnel clearance, height and width are designed according to train speed, tunnel depth and geological conditions, the cross-sectional dimensions of tunnels in different sections are inconsistent. When the cross-section changes, traditional steel reinforcement platforms need to be recut, welded and modified to meet the requirements, which is inefficient and extremely inconvenient to use. Utility Model Content

[0004] This utility model provides an adjustable rebar support frame that solves the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An embodiment of this utility model provides an adjustable rebar support frame, including a base frame and further comprising:

[0007] Casters are installed on both sides of the bottom of the base frame;

[0008] A steel frame is fixed to the top of the base frame, and a top frame is fixed to the top of the steel frame;

[0009] A top workbench is installed at the top of the top frame, and top connecting beams connected to the top frame are provided on both sides of the top workbench.

[0010] Extension structures, located on both sides of the steel frame, are used to adjust the width of the device;

[0011] A side workbench is located at the top of the extension structure, and a side connecting beam is provided on one side of the extension structure;

[0012] The mounting sleeve is installed at the bottom end of the extension structure, and a support rod is slidably connected inside the mounting sleeve;

[0013] The lifting structure is installed on both sides of the base frame. The lifting structure includes a connecting sleeve fixed to one side of the base frame, a support column slidably connected inside the connecting sleeve, a hydraulic cylinder installed on one side of the steel frame with its telescopic end connected to the support column, a support plate fixed to the bottom of the support column, and locking components installed on both sides of the support column.

[0014] The above technical solution allows the frame to move as a whole by rolling the wheels, providing a working platform for workers through the top and side workbenches. The side and top connecting beams support and adjust the position of the inner main reinforcement bars. Each set of support rods is manually pulled out, and wooden boards are placed on the support rods as working platforms to facilitate the binding of longitudinal distribution bars from the outside of the inner main reinforcement bars.

[0015] Furthermore, the locking assembly includes a protective shell fixed to one side of the connecting sleeve, a dual-output shaft motor installed inside one side of the protective shell, a screw installed at the ends of the output shafts on both sides of the dual-output shaft motor and rotatably connected to the protective shell, a movable frame threaded to the outside of the screw, a movable block fixed to one side of the movable frame and slidably connected to the connecting sleeve, an outer toothed plate fixed to one side of the movable block, and an inner toothed plate fixed to both sides of the support column.

[0016] The above technical solution involves extending the hydraulic cylinder to push the steel frame upward, adjusting the overall height of the device, starting the dual-output shaft motor to drive the screw to rotate, and locking the position of the connecting sleeve.

[0017] Furthermore, the outer toothed plate and the inner toothed plate are meshed together, and the moving block and the outer toothed plate are symmetrically distributed on the vertical center line of the supporting column.

[0018] Through the above technical solution, the outer toothed plate and the inner toothed plate are meshed and connected. With the moving block and the outer toothed plate symmetrically distributed on the vertical center line of the support column, a stable locking of the support column can be achieved.

[0019] Furthermore, two sets of protective shells are installed on both sides of the dual-output shaft motor, and the external threads on the surfaces of the two sets of protective shells are in opposite directions.

[0020] The above technical solution ensures that when the dual-output shaft motor rotates, the two screws on both sides drive the moving frame synchronously in opposite directions, so that the external gear plate and the internal gear plate are subjected to balanced forces.

[0021] Furthermore, the extension structure includes support beams fixed to both sides of the steel frame, translation cylinders installed inside the support beams, a movable seat installed at the end of the translation cylinder and connected to the side connecting beam, a movable sleeve installed at the top of the movable seat and connected to the side worktable, and sliding plates fixed to both sides of the top of the support beam.

[0022] The above technical solution involves activating the translation cylinder to move the movable seat, which in turn causes the side worktable and side connecting beam to extend or retract laterally.

[0023] Furthermore, the sliding plate and the movable sleeve form a sliding structure, and the movable sleeve is arranged at equal intervals at the bottom end of the side worktable.

[0024] The above technical solution provides stable guidance and support for the lateral movement of the side worktable, reduces movement resistance, ensures smooth and stable extension or retraction of the worktable, and avoids deviation and shaking.

[0025] The above-described solution of this utility model has at least the following beneficial effects:

[0026] 1. This utility model uses a hydraulic cylinder to extend and push the steel frame upward to adjust the overall height of the device. It also starts a dual-output shaft motor to drive the screw to rotate and lock the position of the connecting sleeve. This achieves the height adjustment function of the device, which can adapt to the varying clearance heights of different sections of high-speed railway tunnels, ensuring construction feasibility, improving construction versatility, avoiding frequent replacement or modification of the platform due to tunnel height differences, and saving costs and time.

[0027] 2. This utility model uses a hydraulic cylinder to move the movable seat, which in turn causes the side worktable and side connecting beam to extend or retract laterally. This enables the device to move its platform, allowing it to adapt flexibly to different tunnel cross-sectional widths. It can be precisely positioned regardless of the width, and there is no need to repeatedly disassemble and reassemble the platform, which facilitates quick switching of work areas and shortens the construction period. Attached Figure Description

[0028] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0029] Figure 2 This is the second schematic diagram of the structure of this utility model;

[0030] Figure 3 This is one of the three-dimensional cross-sectional structural diagrams of the lifting structure provided by this utility model;

[0031] Figure 4 This is the second three-dimensional cross-sectional structural diagram of the lifting structure provided by this utility model;

[0032] Figure 5 One of the three-dimensional cross-sectional structural diagrams of the extension structure provided by this utility model;

[0033] Figure 6 This is the second three-dimensional cross-sectional structural diagram of the extension structure provided by this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Base frame; 2. Casters; 3. Side worktable; 4. Side connecting beam; 5. Support rod; 6. Top connecting beam; 7. Extension structure; 701. Support beam; 702. Translation cylinder; 703. Moving seat; 704. Slide plate; 705. Moving sleeve; 8. Top worktable; 9. Lifting structure; 901. Hydraulic cylinder; 902. Support column; 903. Internal gear; 904. Moving block; 905. Support plate; 906. Connecting sleeve; 907. Protective shell; 908. Dual-shaft motor; 909. External gear; 910. Screw; 911. Moving frame; 10. Steel frame; 11. Top frame; 12. Mounting sleeve. Detailed Implementation

[0036] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0037] like Figures 1 to 6 As shown, an embodiment of this utility model provides an adjustable rebar support frame, including a base frame 1, and further comprising:

[0038] The two movable wheels are installed on both sides of the bottom end of the base frame 1;

[0039] A steel frame 10 is fixed to the top of the base frame 1, and a top frame 11 is fixed to the top of the steel frame 10;

[0040] The top worktable 8 is installed at the top of the top frame 11, and both sides of the top worktable 8 are provided with top connecting beams 6 that are connected to the top frame 11.

[0041] Extension structure 7 is set on both sides of steel frame 10 and is used to adjust the width of the device;

[0042] The side workbench 3 is set at the top of the extension structure 7, and a side connecting beam 4 is provided on one side of the extension structure 7.

[0043] Mounting sleeve 12 is installed at the bottom end of extension structure 7, and a support rod 5 is slidably connected inside mounting sleeve 12;

[0044] The lifting structure 9 is provided on both sides of the base frame 1. The lifting structure 9 includes a connecting sleeve 906 fixed on one side of the base frame 1, a support column 902 slidably connected inside the connecting sleeve 906, a hydraulic cylinder 901 installed on one side of the steel frame 10 and whose telescopic end is connected to the support column 902, a support plate 905 fixed at the bottom of the support column 902, and locking components provided on both sides of the support column 902.

[0045] In this embodiment of the utility model, the moving wheels 2 facilitate the overall movement of the platform, thereby adjusting the position of the platform. The top workbench 8 and the side workbench 3 provide a working platform for workers. The side connecting beam 4 and the top connecting beam 6 support and adjust the position of the inner main reinforcement. The main reinforcement is simply placed on the side connecting beam 4 and the top connecting beam 6 according to the design spacing to facilitate the binding of the binding wire. Each set of support rods 5 is manually pulled out, and a wooden board is placed on the support rod 5 as a working platform to facilitate the binding of the longitudinal distribution reinforcement from the outside of the inner main reinforcement.

[0046] like Figures 3 to 4 As shown, the locking assembly includes a protective shell 907 fixed to one side of the connecting sleeve 906, a dual-output shaft motor 908 installed inside one side of the protective shell 907, a screw 910 installed at the ends of the output shafts on both sides of the dual-output shaft motor 908 and rotatably connected to the protective shell 907, a movable frame 911 threaded to the outside of the screw 910, a movable block 904 fixed to one side of the movable frame 911 and slidably connected to the connecting sleeve 906, an outer toothed piece 909 fixed to one side of the movable block 904, and an inner toothed piece 903 fixed to both sides of the support column 902. The outer toothed piece 909 and the inner toothed piece 903 are meshed together. The movable block 904 and the outer toothed piece 909 are symmetrically distributed on the vertical center line of the support column 902. Two sets of protective shells 907 are installed on both sides of the dual-output shaft motor 908, and the external threads on the surfaces of the two sets of protective shells 907 are in opposite directions.

[0047] In this embodiment of the utility model, when adjusting the height, the hydraulic cylinder 901 extends and pushes the steel frame 10 upward to adjust the overall height of the device. At the same time, the base frame 1 drives the connecting sleeve 906 to slide on the outside of the support column 902, so that the steel frame 10 is not easy to shake during the lifting process. The support plate 905 increases the contact area between the support column 902 and the ground, ensuring that the support column 902 is not easy to sink into the soil and rocks. After the adjustment is completed, the dual-output shaft motor 908 is started to drive the screw 910 to rotate, so that the moving frame 911 drives the moving block 904 to move through the thread on the surface of the screw 910. Then, the moving block 904 pushes the outer toothed plate 909 to mesh with the inner toothed plate 903, thereby locking the lifting of the connecting sleeve 906.

[0048] like Figures 5 to 6 As shown, the extension structure 7 includes a support beam 701 fixed on both sides of the steel frame 10, a translation cylinder 702 installed inside the support beam 701, a movable seat 703 installed at the end of the translation cylinder 702 and connected to the side connecting beam 4, a movable sleeve 705 installed at the top of the movable seat 703 and connected to the side worktable 3, and a sliding plate 704 fixed on both sides of the top of the support beam 701. The sliding plate 704 and the movable sleeve 705 form a sliding structure. The movable sleeves 705 are arranged at equal intervals at the bottom of the side worktable 3.

[0049] In this embodiment of the utility model, the moving seat 703 is moved by activating the translation cylinder 702, which causes the moving seat 703 to drive the side worktable 3 and the side connecting beam 4 to extend or retract laterally. The side worktable 3 is moved smoothly by sliding the sliding plate 704 inside the moving sleeve 705.

[0050] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An adjustable rebar support frame, comprising a base frame (1), characterized in that, Also includes: The movable wheels (2) are installed on both sides of the bottom end of the base frame (1); A steel frame (10) is fixed to the top of the base frame (1), and a top frame (11) is fixed to the top of the steel frame (10); A top workbench (8) is installed at the top of the top frame (11), and top connecting beams (6) connected to the top frame (11) are provided on both sides of the top workbench (8). Extension structures (7) are set on both sides of the steel frame (10) for adjusting the width of the device; A side workbench (3) is set at the top of the extension structure (7), and a side connecting beam (4) is provided on one side of the extension structure (7); The mounting sleeve (12) is installed at the bottom end of the extension structure (7), and the mounting sleeve (12) is slidably connected to the inside of the support rod (5); The lifting structure (9) is set on both sides of the base frame (1). The lifting structure (9) includes a connecting sleeve (906) fixed on one side of the base frame (1), a support column (902) slidably connected inside the connecting sleeve (906), a hydraulic cylinder (901) installed on one side of the steel frame (10) and whose telescopic end is connected to the support column (902), a support plate (905) fixed at the bottom of the support column (902), and locking components set on both sides of the support column (902).

2. The adjustable rebar support according to claim 1, characterized in that, The locking assembly includes a protective shell (907) fixed to one side of the connecting sleeve (906), a dual-output shaft motor (908) installed inside one side of the protective shell (907), a screw (910) installed at the ends of the output shafts on both sides of the dual-output shaft motor (908) and rotatably connected to the protective shell (907), a movable frame (911) threaded to the outside of the screw (910), a movable block (904) fixed to one side of the movable frame (911) and slidably connected to the connecting sleeve (906), an outer toothed piece (909) fixed to one side of the movable block (904), and an inner toothed piece (903) fixed to both sides of the support column (902).

3. An adjustable rebar support according to claim 2, characterized in that, The outer toothed plate (909) and the inner toothed plate (903) are meshed together, and the moving block (904) and the outer toothed plate (909) are symmetrically distributed on the vertical center line of the supporting column (902).

4. An adjustable rebar support according to claim 2, characterized in that, Two sets of the protective shell (907) are installed on both sides of the dual-output shaft motor (908), and the external threads on the surfaces of the two sets of protective shells (907) are opposite.

5. An adjustable rebar support according to claim 1, characterized in that, The extension structure (7) includes a support beam (701) fixed on both sides of the steel frame (10), a translation cylinder (702) installed inside the support beam (701), a movable seat (703) installed at the end of the translation cylinder (702) and connected to the side connecting beam (4), a movable sleeve (705) installed at the top of the movable seat (703) and connected to the side worktable (3), and a sliding plate (704) fixed on both sides of the top of the support beam (701).

6. An adjustable rebar support according to claim 5, characterized in that, The sliding structure is formed between the sliding plate (704) and the movable sleeve (705), and the movable sleeve (705) is arranged at equal intervals at the bottom of the side worktable (3).

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