Heavy door ground spring anti-swing reinforcing support device
By designing a heavy-duty door floor spring anti-sway reinforcement support device, and utilizing components such as triangular brackets and guide rail mechanisms, the swaying problem of heavy-duty fire doors during closing is solved, improving the stability of the floor spring and the smooth operation of the door, and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST COMPARY OF CHINA EIGHTH ENG BUREAU LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-23
AI Technical Summary
Existing heavy-duty fire doors are prone to swaying during closing due to rebound or external force, which can cause the connection between the floor spring and the ground to loosen and damage internal components, resulting in insufficient stability.
A heavy-duty door floor spring anti-sway reinforcement support device was designed, including a triangular bracket, a guide frame assembly, an adjustment assembly, and a support adjustment assembly. By stabilizing the base frame, guide rail mechanism, servo push rod, and other components, it provides stable basic support and variable support force, thereby enhancing the stability and support strength of the floor spring.
It effectively solves the problem of fire doors swaying when closing, improves the stability and service life of the floor spring, ensures smooth door operation, reduces safety hazards, and adapts to the installation needs of different door types.
Smart Images

Figure CN224396284U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline rust removal technology, and in particular to a heavy-duty door floor spring anti-sway reinforcement support device. Background Technology
[0002] Currently, fire doors, as important fire-resistant partitions in modern buildings, play a crucial role in protecting the lives and property of people. Especially in some large commercial buildings and industrial plants, heavy-duty fire doors are often used to meet higher fire protection levels and safety requirements. However, heavy-duty fire doors have many problems during the closing process.
[0003] However, after existing fire doors are closed by the door closer, due to the large weight of the fire door, they are prone to swaying due to rebound or external force. When the external force acts directly on the floor spring, it can not only cause the connection between the floor spring and the ground to loosen, but also easily damage the internal components of the floor spring.
[0004] Solving the aforementioned technical problems is the challenge facing this utility model. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a reasonably designed, safe, and reliable anti-sway reinforcement support device for heavy-duty door floor springs. It effectively solves the swaying problem when heavy-duty fire doors are closed, improves the stability and service life of the floor spring, and is suitable for the efficient installation and reliable operation of heavy-duty doors.
[0006] The technical solution adopted by this utility model to solve its technical problem is: a heavy-duty door floor spring anti-sway reinforcement support device, including a support mechanism for providing stable foundation support. The support mechanism includes supports symmetrically arranged on both sides of the floor spring module and having a triangular cross-section. A guide frame assembly is provided on one side of the support facing the other support. An adjustment component for installing and adjusting the floor spring module is provided on the guide frame assembly.
[0007] The bracket is provided with guide rail mechanisms at both ends, and a support adjustment component for providing variable support force is provided in the guide rail mechanism. The support adjustment component includes a horizontal support arm, a sliding guide block that cooperates with the guide rail mechanism is provided at one end of the horizontal support arm, a vertical support arm that cooperates with the vertical support arm is provided at the other end of the horizontal support arm, and a pressure block is provided at the bottom end of the vertical support arm.
[0008] Furthermore, the support includes a stable base frame that is in contact with the ground, a stable vertical frame that cooperates with the guide frame assembly is provided at one end of the stable base frame, and a stable inclined frame is provided on the stable base frame.
[0009] The guide frame assembly includes a guide frame body that cooperates with the stabilizing vertical frame. The guide frame body has a sliding vertical groove that cooperates with the adjustment component. The two guide rail mechanisms are located on the two end faces of the guide frame body.
[0010] Furthermore, a connecting plate is provided between the two brackets, and the connecting plate is located at the bottom center of the bracket mechanism; the bottom surface of the floor spring module has a connecting groove that mates with the connecting plate. The quick installation and removal of the floor spring module is achieved through the cooperation of the connecting plate and the connecting groove.
[0011] Furthermore, the connecting plate is provided with a connecting screw that connects to the stabilizing vertical frame, the stabilizing vertical frame is provided with a connecting screw groove, and the stabilizing base frame is provided with a storage groove that cooperates with the connecting plate.
[0012] Furthermore, the sturdy base frame is provided with arrayed positioning holes, and fixing bolts are inserted into the positioning holes. The bottom end of the fixing bolts is screwed to the ground or the pre-embedded threaded hole of the installation foundation to fix the support mechanism in the installation position.
[0013] Furthermore, the adjustment assembly includes a vertically arranged adjustment screw, the upper end of which extends upward to form a guide frame assembly, and an adjustment block for manual adjustment is fixedly connected to the top of the adjustment screw.
[0014] The adjusting screw is provided with a pressure plate, and the inside of the pressure plate is provided with a screw hole that cooperates with the adjusting screw. A slider is provided on the outside of the pressure plate, and the pressure plate is slidably connected to the guide frame assembly through the slider. A ground spring module is press-fitted and limited at the bottom of the pressure plate.
[0015] Preferably, the adjustment assembly further includes a bearing seat disposed on the top of the guide assembly, and the adjustment screw is rotatably connected to the guide assembly through the bearing seat to ensure stable rotation and smooth adjustment of the adjustment screw.
[0016] Preferably, an elastic buffer is provided between the pressure plate and the floor spring module. The elastic buffer is a rubber pad or a spring sheet, which is used to absorb impact and vibration during adjustment, thereby improving the installation stability and service life of the floor spring module.
[0017] Furthermore, the guide rail mechanism includes a guide rail body fixedly installed on both ends of the bracket. The guide rail body has a longitudinal slide groove inside. The shape and size of the longitudinal slide groove are adapted to the sliding guide block to guide the up and down movement of the support adjustment component. The guide rail mechanism is provided with a servo push rod for driving the support adjustment component to move along the longitudinal slide groove.
[0018] Furthermore, the support adjustment assembly also includes an inclined support arm disposed between the horizontal support arm and the vertical support arm, with both ends of the inclined support arm fixedly connected to the horizontal support arm and the vertical support arm respectively, to enhance the overall stability and support strength of the support adjustment assembly.
[0019] Furthermore, the support adjustment assembly also includes a hydraulic damper disposed between the pressure block and the support vertical arm. The hydraulic damper includes a cylinder, a piston, and a piston rod. The cylinder is fixed on the support vertical arm, and the piston rod is connected to the pressure block. The flow of hydraulic oil in the cylinder generates damping force, absorbs impact force, and achieves a shock absorption effect.
[0020] This utility model provides a stable basic support structure through a triangular bracket mechanism. With the help of positioning holes and fixing bolts, the entire support structure can be firmly fixed to the ground during installation, effectively preventing displacement of the bracket mechanism during use and greatly improving stability. It solves the problem of door opening and closing not being smooth due to insufficient stability of existing floor spring support structures. At the same time, the coordinated work of the guide rail mechanism, servo push rod, horizontal support arm, support vertical arm and diagonal support arm further enhances the support strength and stability of the door, ensuring that the door can maintain smooth operation during frequent opening and closing and reducing safety hazards.
[0021] This invention, through the combination of adjusting screw, adjusting block, pressure plate and slider, can easily adjust the height of the floor spring module to adapt to the installation requirements of different doors. The support force adjustment structure composed of servo push rod and other components can flexibly adjust the support force according to the weight of the door and the usage conditions. This flexibility is not available in the prior art. This not only improves versatility, but also effectively extends the service life of the floor spring and the door, solving the problem from multiple aspects that the existing floor spring support structure cannot meet the needs of heavy doors. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall axial side view of the present invention;
[0023] Figure 2 This is a schematic diagram of the combined structure of the support mechanism and positioning hole of this utility model;
[0024] Figure 3 This is a top view of the structure of this utility model;
[0025] Figure 4 This is a schematic diagram of the left-side structure of this utility model;
[0026] Figure 5 This is a schematic diagram of the combined structure of the movable component and the longitudinal support arm of this utility model;
[0027] Figure 6This is a schematic diagram of the left-side structure of this utility model;
[0028] The attached diagram is labeled as follows: 1. Support mechanism; 101. Positioning hole; 1011. Fixing bolt; 1012. Guide frame assembly; 2. Adjusting block; 201. Adjusting screw; 2011. Pressure plate; 2012. Sliding block; 2013. Floor spring module; 3. Guide rail mechanism; 301. Servo push rod; 3011. Horizontal support arm; 3012. Sliding guide block; 3013. Supporting vertical arm; 3014. Inclined support arm; 3015. Pressure block. Detailed Implementation
[0029] See Figures 1 to 6 As shown, a heavy-duty door floor spring anti-sway reinforcement support device includes a support mechanism 1 for providing stable foundation support. The support mechanism 1 includes supports symmetrically arranged on both sides of the floor spring module 2013 and having a triangular cross-section. A guide frame assembly 1012 is provided on one side of the support facing the other support. An adjustment component for installing and adjusting the floor spring module 2013 is provided on the guide frame assembly 1012.
[0030] The bracket is provided with guide rail mechanism 3 at both ends, and a support adjustment component for providing variable support force is provided in the guide rail mechanism 3. The support adjustment component includes a horizontal support arm 3011, a sliding guide block 3012 that cooperates with the guide rail mechanism 3 is provided at one end of the horizontal support arm 3011, a support vertical arm 3013 that cooperates with the guide rail mechanism 3 is provided at the other end of the horizontal support arm 3011, and a pressure block 3015 is provided at the bottom end of the support vertical arm 3013.
[0031] Furthermore, the support includes a stable base frame that is in contact with the ground, and a stable vertical frame that cooperates with the guide frame assembly 1012 is provided at one end of the stable base frame. A stable inclined frame is provided on the stable base frame.
[0032] The guide frame assembly 1012 includes a guide frame body that cooperates with the stabilizing vertical frame. The guide frame body has a sliding vertical groove that cooperates with the adjustment assembly. The two guide rail mechanisms 3 are respectively located on the two end faces of the guide frame body.
[0033] Preferably, the side of the sturdy vertical frame facing the other support is provided with an installation groove that is adapted to the guide frame assembly 1012. The guide frame assembly 1012 is fixed in the installation groove by welding, bolt connection or snap-fit connection, so as to realize the stable connection and precise positioning of the guide frame assembly 1012 and the support. Moreover, the shape and size of the installation groove are closely fitted with the outer contour of the guide frame assembly 1012 to ensure the connection strength and stability.
[0034] Preferably, the stabilizing vertical frame is integrally formed with the guide frame assembly 1012.
[0035] Furthermore, a connecting plate is provided between the two brackets, and the connecting plate is located at the bottom center of the bracket mechanism 1; the bottom surface of the floor spring module 2013 has a connecting groove that mates with the connecting plate. The floor spring module 2013 can be quickly installed and disassembled through the cooperation between the connecting plate and the connecting groove.
[0036] Preferably, the upper surface of the connecting plate is provided with a plurality of positioning bosses, and the connecting groove is provided with a connecting groove adapted to the positioning bosses. The connecting plate achieves positioning and cooperation with the floor spring module 2013 by the positioning bosses being embedded into the connecting grooves.
[0037] Furthermore, the connecting plate is provided with a connecting screw that connects to the stabilizing vertical frame, the stabilizing vertical frame is provided with a connecting screw groove, and the stabilizing base frame is provided with a storage groove that cooperates with the connecting plate.
[0038] Furthermore, the sturdy base frame is provided with arrayed positioning holes 101, and fixing bolts 1011 are inserted into the positioning holes 101. The bottom end of the fixing bolts 1011 is screwed to the ground or the pre-embedded threaded hole of the installation foundation to fix the support mechanism 1 in the installation position.
[0039] Furthermore, the adjustment assembly includes a vertically arranged adjustment screw 201, the upper end of which extends upward to form a guide frame assembly 1012, and the top end of the adjustment screw 201 is fixedly connected to an adjustment block 2 for manual adjustment.
[0040] The adjusting screw 201 is provided with a pressure plate 2011. The pressure plate 2011 has a screw hole inside that is in transmission cooperation with the adjusting screw 201. The outer side of the pressure plate 2011 is provided with a slider 2012. The pressure plate 2011 is slidably connected to the guide frame assembly 1012 through the slider 2012. The bottom end of the pressure plate 2011 is press-fitted with a floor spring module 2013.
[0041] Preferably, the adjustment assembly further includes a bearing seat disposed on the top of the guide frame assembly 1012, and the adjustment screw 201 is rotatably connected to the guide frame assembly 1012 through the bearing seat to ensure stable rotation and smooth adjustment of the adjustment screw 201.
[0042] Preferably, an elastic buffer is provided between the pressure plate 2011 and the floor spring module 2013. The elastic buffer is a rubber pad or a spring sheet, which is used to absorb impact and vibration during adjustment, thereby improving the installation stability and service life of the floor spring module 2013.
[0043] Preferably, the elastic buffer is fixed to the bottom surface of the pressure plate 2011 by adhesive or clips to ensure that it will not shift or fall off during adjustment, thus ensuring the stable performance of the shock absorption effect.
[0044] Furthermore, the guide rail mechanism 3 includes a guide rail body fixedly installed on both ends of the bracket. The guide rail body has a longitudinal slide groove inside. The shape and size of the longitudinal slide groove are adapted to the sliding guide block 3012 to guide the up and down movement of the support adjustment component. The guide rail mechanism 3 is provided with a servo push rod 301 for driving the support adjustment component to move along the longitudinal slide groove.
[0045] Preferably, the longitudinal section of the guide rail body is C-shaped or U-shaped to increase structural strength and prevent the sliding guide block 3012 from falling off the track during movement, thus ensuring the stable operation of the support adjustment assembly.
[0046] Preferably, the guide rail mechanism 3 is connected to the bracket by bolts, which facilitates disassembly and maintenance and ensures the stability of the connection. In addition, the guide rail mechanism 3 is fixedly installed in the guide frame body and is integrally formed.
[0047] Furthermore, the support adjustment assembly also includes an inclined support arm 3014 disposed between the horizontal support arm 3011 and the vertical support arm 3013. The two ends of the inclined support arm 3014 are fixedly connected to the horizontal support arm 3011 and the vertical support arm 3013, respectively, to enhance the overall stability and support strength of the support adjustment assembly.
[0048] Furthermore, the support adjustment assembly also includes a hydraulic damper disposed between the pressure block 3015 and the support vertical arm 3013. The hydraulic damper includes a cylinder, a piston, and a piston rod. The cylinder is fixed on the support vertical arm 3013, and the piston rod is connected to the pressure block 3015. The flow of hydraulic oil in the cylinder generates damping force, absorbs impact force, and achieves a shock absorption effect.
[0049] Meanwhile, the aforementioned hydraulic damper can be replaced by a gas spring disposed between the pressure block 3015 and the support vertical arm 3013. The gas spring consists of a pressure tube, a piston, a piston rod, and a spring seat, and is filled with high-pressure nitrogen. One end of the gas spring is fixed to the support vertical arm 3013, and the other end is connected to the pressure block 3015. The compressibility of the high-pressure nitrogen is used to buffer the impact force and achieve the shock absorption effect.
[0050] Furthermore, the aforementioned hydraulic damper can be replaced with a magnetorheological fluid damper disposed between the pressure block 3015 and the support vertical arm 3013. The magnetorheological damper includes a cavity installed between the bottom of the support vertical arm 3013 and the pressure block 3015; the cavity is filled with magnetorheological fluid and equipped with an excitation coil; the excitation coil is energized by an external controller to adjust the viscosity of the magnetorheological fluid in real time, thereby dynamically adjusting the damping performance. Preferably, it also includes a vibration sensor and a control module for automatically adjusting the damping force according to the vibration intensity during the opening and closing of the door, achieving intelligent damping function.
[0051] Furthermore, the aforementioned hydraulic damper can be replaced by an airbag-type shock absorption system disposed between the pressure block 3015 and the support vertical arm 3013. The airbag-type shock absorption system includes an air spring airbag installed at the bottom of the support vertical arm 3013; the airbag is connected to a pressure regulating valve via an air pipe; the pressure regulating valve is used to manually or automatically adjust the internal air pressure of the airbag according to the door load, thereby changing its shock absorption stiffness. Preferably, the airbag is provided with a protective sleeve on its outer side to prevent wear or environmental factors from affecting its service life.
[0052] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.
Claims
1. A heavy-duty door floor spring anti-sway reinforcement support device, characterized in that: The system includes a support mechanism (1) for providing stable foundation support. The support mechanism (1) includes supports symmetrically arranged on both sides of the floor spring module (2013) and having a triangular cross-section. A guide frame assembly (1012) is provided on one side of the support facing the other support. An adjustment component for installing and adjusting the floor spring module (2013) is provided on the guide frame assembly (1012). The bracket is provided with guide rail mechanism (3) at both ends, and a support adjustment component for providing variable support force is provided in the guide rail mechanism (3); the support adjustment component includes a horizontal support arm (3011), a sliding guide block (3012) that cooperates with the guide rail mechanism (3) is provided at one end of the horizontal support arm (3011), a support vertical arm (3013) that cooperates with the support vertical arm (3013) is provided at the other end of the horizontal support arm (3011), and a pressure block (3015) is provided at the bottom end of the support vertical arm (3013).
2. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 1, characterized in that: The support includes a stable base frame that is in contact with the ground, and a stable vertical frame that cooperates with the guide frame assembly (1012) is provided at one end of the stable base frame. A stable inclined frame is provided on the stable base frame. The guide frame assembly (1012) includes a guide frame body that cooperates with the sturdy vertical frame. The guide frame body has a sliding vertical groove that cooperates with the adjustment assembly. The two guide rail mechanisms (3) are located on the two end faces of the guide frame body.
3. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 2, characterized in that: A connecting plate is provided between the two brackets, and the connecting plate is located at the bottom center of the bracket mechanism (1); the bottom surface of the floor spring module (2013) is provided with a connecting groove that mates with the connecting plate. The floor spring module (2013) can be quickly installed and disassembled through the cooperation between the connecting plate and the connecting groove.
4. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 3, characterized in that: The connecting plate is provided with a connecting screw that connects to the stabilizing vertical frame. The stabilizing vertical frame is provided with a connecting screw groove, and the stabilizing base frame is provided with a storage groove that cooperates with the connecting plate.
5. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 2, characterized in that: The sturdy base frame is provided with arrayed positioning holes (101), and a fixing bolt (1011) is inserted into the positioning hole (101). The bottom end of the fixing bolt (1011) is screwed to the ground or the pre-embedded threaded hole of the installation foundation to fix the support mechanism (1) in the installation position.
6. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 1, characterized in that: The adjustment assembly includes a vertically arranged adjustment screw (201), the upper end of which extends upward to form a guide frame assembly (1012), and the top end of the adjustment screw (201) is fixedly connected to an adjustment block (2) for manual adjustment. The adjusting screw (201) is provided with a pressure plate (2011). The pressure plate (2011) has a screw hole inside that is in transmission cooperation with the adjusting screw (201). A slider (2012) is provided on the outside of the pressure plate (2011). The pressure plate (2011) is slidably connected to the guide frame assembly (1012) through the slider (2012). A ground spring module (2013) is press-fitted and limited at the bottom end of the pressure plate (2011).
7. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 6, characterized in that: The adjustment assembly also includes a bearing seat disposed on the top of the guide frame assembly (1012), and the adjustment screw (201) is rotatably connected to the guide frame assembly (1012) through the bearing seat; An elastic buffer is provided between the pressure plate (2011) and the floor spring module (2013), and the elastic buffer is a rubber pad or a spring sheet.
8. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 1, characterized in that: The guide rail mechanism (3) includes a guide rail body fixedly installed on both ends of the bracket. The guide rail body is provided with a longitudinal slide groove. The shape and size of the longitudinal slide groove are adapted to the sliding guide block (3012). The guide rail mechanism (3) is provided with a servo push rod (301) for driving the support adjustment component to move along the longitudinal slide groove.
9. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 1, characterized in that: The support adjustment assembly also includes an inclined support arm (3014) disposed between the horizontal support arm (3011) and the vertical support arm (3013), with both ends of the inclined support arm (3014) being fixedly connected to the horizontal support arm (3011) and the vertical support arm (3013) respectively.
10. The heavy-duty door floor spring anti-sway reinforcement support device as described in claim 1, characterized in that: The support adjustment assembly also includes a hydraulic damper disposed between the pressure block (3015) and the support vertical arm (3013). The hydraulic damper includes a cylinder, a piston, and a piston rod. The cylinder is fixed on the support vertical arm (3013), and the piston rod is connected to the pressure block (3015). The flow of hydraulic oil in the cylinder generates damping force, absorbs impact force, and achieves shock absorption effect.