Size adjustable horizontal opening guard
By designing and adjusting the sliding connection and bolt fixing of the support frame and protective plate, the problem of insufficient adaptability of traditional horizontal opening protection devices is solved, achieving the effects of simple installation, reliable fixing and reusability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG DEJIAN GRP CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional horizontal opening protection devices are not adaptable, are complex to install, costly, have low reuse rate, and pose safety hazards.
Design an adjustable horizontal opening protection device that includes an adjustable support frame and a protective plate. The device can adapt to different opening sizes by adjusting the sliding connection and bolt fixing of the support frame, and can be firmly installed using threaded rods and hanging plates.
It is adaptable to openings of different sizes, easy to install, securely fixed, prevents loosening and falling off, and is reusable.
Smart Images

Figure CN224532309U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, and in particular to a horizontal opening protection device with adjustable dimensions. Background Technology
[0002] In the construction process, the temporary or long-term protection of horizontal openings (such as pipe pre-drilled holes, equipment installation holes, construction and maintenance access points, etc.) is a crucial link in ensuring construction safety and facility operation and maintenance. Traditional horizontal opening protection devices mostly use fixed-size cover plates, grids, or welded closed structures, which have the following limitations: 1. Insufficient adaptability: The width of the opening varies due to design requirements or construction errors, and fixed-size protection devices need to be customized, resulting in high costs and low efficiency; 2. High installation complexity: Frequent on-site adjustments or cutting of materials to fit different-sized openings are required, increasing labor and time costs; 3. Low reuse rate: After the project ends, fixed-size devices are difficult to adapt to new scenarios, resulting in resource waste; 4. Safety hazards: Temporary assembled structures are prone to insecure fixation due to size mismatch, posing a risk of detachment or deformation. Utility Model Content
[0003] The purpose of this utility model is to provide a horizontal opening protection device with adjustable size, which can adapt to horizontal openings of different sizes, has good adaptability, is simple and convenient to install, can be reused, and is firmly fixed to avoid the risk of loosening and falling off.
[0004] To achieve the above and other related objectives, this utility model provides a dimensionally adjustable horizontal opening protection device, comprising: an adjustable support frame and a protective plate. The adjustable support frame includes a first adjusting pipe and a second adjusting pipe. One end of the second adjusting pipe passes through the first adjusting pipe along its extension direction. The second adjusting pipe is slidably connected to the first adjusting pipe. A plurality of first bolt holes are evenly distributed on both side walls of the first adjusting pipe along its extension direction. A plurality of second bolt holes are evenly distributed on both side walls of the second adjusting pipe along its extension direction. The first bolt holes and second bolt holes mate and are fixedly connected by a first bolt assembly. The first adjusting pipe is located away from the... One end of the second adjusting tube is rotatably fitted with a first adjusting sleeve, and the end of the second adjusting tube away from the first adjusting tube is rotatably fitted with a second adjusting sleeve. A screw rod is threaded into the first adjusting sleeve and the second adjusting sleeve respectively. A hanging plate is fixedly installed at the opposite ends of the two screw rods. The hanging plate is engaged with the edge of the horizontal opening. The length and width of the protective plate are greater than the length and width of the horizontal opening respectively. A sliding groove is provided on both sides of the top surface of the protective plate along the length of the protective plate. The positions of the two sliding grooves are respectively engaged with the top surfaces of the first adjusting tube and the second adjusting tube. The two sliding grooves are fixedly connected to the first adjusting tube and the second adjusting tube respectively by several fixing components.
[0005] In one example of the adjustable horizontal opening protection device of this utility model, the first adjusting tube and the second adjusting tube are square tubes. The first adjusting tube is fixedly installed with a first bearing at the end away from the second adjusting tube, and the second adjusting tube is fixedly installed with a second bearing at the end away from the first adjusting tube. The first adjusting sleeve is rotatably connected to the first bearing, and the second adjusting sleeve is rotatably connected to the second bearing.
[0006] In one example of the adjustable-size horizontal opening protection device of this utility model, a first adjusting plate is fixedly installed on the outer wall of the end of the first adjusting sleeve away from the second adjusting tube, and a second adjusting plate is fixedly installed on the outer wall of the end of the second adjusting sleeve away from the first adjusting tube.
[0007] In one example of the adjustable-size horizontal opening protection device of this utility model, the outer wall of the second adjusting tube is attached to and slidably connected to the inner wall of the first adjusting tube.
[0008] In one example of the adjustable-size horizontal opening protection device of this utility model, the hanging plate includes a vertical plate and a horizontal plate. The screw is vertically fixed to the middle of one end face of the vertical plate, and the horizontal plate is vertically fixed to one side edge of the other end face of the vertical plate.
[0009] In one example of the adjustable-size horizontal opening protection device of this utility model, one of the sliding grooves cooperates with the end of the top surface of the first adjusting pipe away from the second adjusting pipe, and the other sliding groove cooperates with the end of the top surface of the second adjusting pipe away from the first adjusting pipe.
[0010] In one example of the adjustable-size horizontal opening protection device of this utility model, the fixing component includes a first fixing bolt, a second fixing bolt, a first washer, and a second washer. The first fixing bolt passes through a first washer and a groove in sequence and is fixedly connected to the top surface of the first adjusting tube. The second fixing bolt passes through a first washer, a groove, and a second washer in sequence and is fixedly connected to the top surface of the second adjusting tube. The outer diameter of the first washer and the second washer is larger than the width of the groove, and the thickness of the second washer is equal to the outer wall thickness of the first adjusting tube.
[0011] In one example of the adjustable-size horizontal opening protection device of this utility model, several anti-slip strips are evenly distributed on the top surface of the protective plate along the length direction of the protective plate.
[0012] This utility model relates to an adjustable-size horizontal opening protection device. The number of adjustable support frames is selected based on the size of the horizontal opening. These frames are then evenly arranged along the length of the opening. The second adjusting tube slides within the first adjusting tube, allowing the hanging plates at both ends of the support frame to engage with the top edge of the horizontal opening in the width direction. The second adjusting tube is then adjusted so that its second bolt holes align with the first bolt holes on the first adjusting tube. The first and second adjusting tubes are then fixedly connected using a first bolt assembly. The first and second adjusting sleeves are then rotated, driving two lead screws to extend and press the two hanging plates against the sides of the horizontal opening, thus securing the adjustable support frame within the opening. A protective plate is then aligned and covered, and two sliding grooves are fixedly connected to the tops of the first and second adjusting tubes using several fixing assemblies, completing the installation of the protection device. This utility model is adaptable to horizontal openings of different sizes, offering good versatility, simple and convenient installation, reusability, and secure fixation, preventing the risk of loosening or detachment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of an embodiment of the adjustable-size horizontal opening protection device of this utility model; Figure 2 This is a schematic diagram of the installation of the adjustable support frame in one embodiment of the adjustable horizontal opening protection device of this utility model; Figure 3This is a schematic diagram of the structure of the adjustable support frame in one embodiment of the adjustable horizontal opening protection device of this utility model; Figure 4 This is a schematic diagram of the structure of the protective plate in one embodiment of the adjustable-size horizontal opening protection device of this utility model.
[0014] Component designation: 100 Adjustable support frame; 110 First adjusting pipe; 111 First bolt hole; 112 First adjusting threaded sleeve; 113 First bearing; 114 First adjusting plate; 120 Second adjusting pipe; 121 Second bolt hole; 122 Second adjusting threaded sleeve; 123 Second bearing; 124 Second adjusting plate; 130 First bolt assembly; 140 Lead screw; 150 Hanging plate; 151 Vertical plate; 152 Horizontal plate; 200 Protective plate; 210 Slide groove; 220 Fixing assembly; 221 First fixing bolt; 222 Second fixing bolt; 223 First washer; 224 Second washer; 230 Anti-slip strip; 300 Horizontal opening. Detailed Implementation
[0015] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.
[0016] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.
[0017] Please see Figures 1 to 4This utility model provides a dimensionally adjustable horizontal opening protection device, comprising: an adjustable support frame 100 and a protective plate 200. The adjustable support frame 100 includes a first adjusting pipe 110 and a second adjusting pipe 120. One end of the second adjusting pipe 120 passes through the first adjusting pipe 110 along its extension direction. The second adjusting pipe 120 is slidably connected to the first adjusting pipe 110. A plurality of first bolt holes 111 are evenly distributed on both side walls of the first adjusting pipe 110 along its extension direction. A plurality of first bolt holes 111 are evenly distributed on both side walls of the second adjusting pipe 120 along its extension direction. A plurality of second bolt holes 121 are distributed. The first bolt holes 111 and the second bolt holes 121 are engaged and fixedly connected by the first bolt assembly 130. The first adjusting tube 110 is rotatably mounted with a first adjusting sleeve 112 at the end away from the second adjusting tube 120. The second adjusting tube 120 is rotatably mounted with a second adjusting sleeve 122 at the end away from the first adjusting tube 110. A lead rod 140 is threadedly connected to the first adjusting sleeve 112 and the second adjusting sleeve 122 respectively. A hanging plate 150 is fixedly mounted at the opposite ends of the two lead rods 140 respectively. The hanging plate 150 is engaged with the edge of the horizontal opening 300. The length and width of the protective plate 200 are greater than the length and width of the horizontal opening, respectively. A sliding groove 210 is provided on both sides of the top surface of the protective plate 200 along the length direction of the protective plate 200. The positions of the two sliding grooves 210 are respectively matched with the top surfaces of the first adjusting pipe 110 and the second adjusting pipe 120. The two sliding grooves 210 are fixedly connected to the first adjusting pipe 110 and the second adjusting pipe 120 respectively by a number of fixing components 220.
[0018] This utility model is installed at a horizontal opening 300. The number of adjusting support frames 100 used is selected according to the size of the horizontal opening 300, such as one, two or more. Then, several adjusting support frames 100 are evenly arranged along the length direction of the horizontal opening 300. The second adjusting tube 120 is controlled to slide inside the first adjusting tube 110, so that the hanging plates 150 at both ends of the adjusting support frame 100 are respectively hooked to the top edge of the horizontal opening 300 in the width direction. Then, the second adjusting tube 120 is adjusted so that several second bolt holes 121 on the second adjusting tube 120 are engaged with several first bolt holes 111 on the first adjusting tube 110. The first adjusting tube 110 and the second adjusting tube 120 are fixedly connected by the first bolt assembly 130. Then, the first adjusting sleeve 112 and the second adjusting sleeve 122 are rotated respectively, driving the two lead screws 140 to extend. The two lead screws 140 are used to press and fix the two hanging plates 150 to the two sides of the horizontal opening 300, thereby fixing the adjusting support frame 100 in the horizontal opening 300. Then, the protective plate 200 is aligned and covered to cover the horizontal opening 300. Then, the two sliding grooves 210 are fixedly connected to the top of the first adjusting pipe 110 and the second adjusting pipe 120 respectively through several fixing components 220, thus completing the installation of the protective device.
[0019] Please see Figure 3 In one example of the adjustable-size horizontal opening protection device of this utility model, the first adjusting pipe 110 and the second adjusting pipe 120 are square tubes. A first bearing 113 is fixedly installed at the end of the first adjusting pipe 110 away from the second adjusting pipe 120, and a second bearing 123 is fixedly installed at the end of the second adjusting pipe 120 away from the first adjusting pipe 110. The first adjusting sleeve 112 is rotatably connected to the first bearing 113, and the second adjusting sleeve 122 is rotatably connected to the second bearing 123. The first bearing 113 and the second bearing 123 are respectively embedded and fixedly connected to the first adjusting pipe 110 and the second adjusting pipe 120. The first bearing 113 and the second bearing 123 can be fixedly connected to the first adjusting pipe 110 and the second adjusting pipe 120 through bearing seats, fixing plates, etc.
[0020] Please see Figures 1 to 3 In one example of the adjustable-size horizontal opening protection device of this utility model, a first adjusting plate 114 is fixedly installed on the outer wall of the end of the first adjusting sleeve 112 away from the second adjusting tube 120, and a second adjusting plate 124 is fixedly installed on the outer wall of the end of the second adjusting sleeve 122 away from the first adjusting tube 110. The rotation of the first adjusting sleeve 112 and the second adjusting sleeve 122 can be controlled by the first adjusting plate 114 and the second adjusting plate 124 respectively, thereby facilitating operation by workers.
[0021] Please see Figure 3In one example of the adjustable-size horizontal opening protection device of this utility model, the outer wall of the second adjusting pipe 120 is attached to and slidably connected to the inner wall of the first adjusting pipe 110.
[0022] Please see Figures 1 to 3 In one example of the adjustable-size horizontal opening protection device of this utility model, the hanging plate 150 includes a vertical plate 151 and a horizontal plate 152. The lead screw 140 is vertically fixedly connected to the middle of one end face of the vertical plate 151, and the horizontal plate 152 is vertically fixedly connected to one side edge of the other end face of the vertical plate 151.
[0023] Please see Figure 1 and Figure 4 In one example of the adjustable-size horizontal opening protection device of this utility model, one of the slide grooves 210 is engaged with the end of the top surface of the first adjusting pipe 110 away from the second adjusting pipe 120, and the other slide groove 210 is engaged with the end of the top surface of the second adjusting pipe 120 away from the first adjusting pipe 110.
[0024] Please see Figure 1 and Figure 4 In one example of the adjustable-size horizontal opening protection device of this utility model, the fixing component 220 includes a first fixing bolt 221, a second fixing bolt 222, a first washer 223, and a second washer 224. The first fixing bolt 221 passes through a first washer 223 and a slide groove 210 in sequence and is fixedly connected to the top surface of the first adjusting tube 110. The second fixing bolt 222 passes through a first washer 223, a slide groove 210, and a second washer 224 in sequence and is fixedly connected to the top surface of the second adjusting tube 120. The outer diameter of the first washer 223 and the second washer 224 is greater than the width of the slide groove 210, and the thickness of the second washer 224 is equal to the outer wall thickness of the first adjusting tube 110.
[0025] Please see Figure 4 In one example of the adjustable-size horizontal opening protection device of this utility model, a plurality of anti-slip strips 230 are evenly distributed on the top surface of the protective plate 200 along the length direction of the protective plate 200.
[0026] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A horizontal opening protection device with adjustable dimensions, characterized in that, include: An adjustable support frame includes a first adjusting tube and a second adjusting tube. One end of the second adjusting tube passes through the first adjusting tube along its extension direction. The second adjusting tube is slidably connected to the first adjusting tube. A plurality of first bolt holes are evenly distributed on both sides of the first adjusting tube along its extension direction. A plurality of second bolt holes are evenly distributed on both sides of the second adjusting tube along its extension direction. The first bolt holes and the second bolt holes are engaged and fixedly connected by a first bolt assembly. A first adjusting sleeve is rotatably installed on the end of the first adjusting tube away from the second adjusting tube. A second adjusting sleeve is rotatably installed on the end of the second adjusting tube away from the first adjusting tube. A screw rod is threaded into the first adjusting sleeve and the second adjusting sleeve respectively. A hanging plate is fixedly installed on the opposite ends of the two screw rods respectively. The hanging plate engages with the edge of the horizontal opening. The protective plate has a length and width greater than the length and width of the horizontal opening, respectively. A sliding groove is provided on both sides of the top surface of the protective plate along the length direction of the protective plate. The positions of the two sliding grooves are respectively matched with the top surfaces of the first adjusting pipe and the second adjusting pipe. The two sliding grooves are fixedly connected to the first adjusting pipe and the second adjusting pipe respectively by several fixing components.
2. The adjustable-size horizontal opening protection device as described in claim 1, characterized in that, The first adjusting tube and the second adjusting tube are square tubes. The first adjusting tube is fixedly mounted with a first bearing at the end away from the second adjusting tube, and the second adjusting tube is fixedly mounted with a second bearing at the end away from the first adjusting tube. The first adjusting sleeve is rotatably connected to the first bearing, and the second adjusting sleeve is rotatably connected to the second bearing.
3. The adjustable-size horizontal opening protection device as described in claim 2, characterized in that, A first adjusting plate is fixedly installed on the outer wall of the end of the first adjusting sleeve away from the second adjusting tube, and a second adjusting plate is fixedly installed on the outer wall of the end of the second adjusting sleeve away from the first adjusting tube.
4. The adjustable-size horizontal opening protection device as described in claim 1, characterized in that, The outer wall of the second regulating tube is in contact with and slidably connected to the inner wall of the first regulating tube.
5. The adjustable-size horizontal opening protection device as described in claim 1, characterized in that, The mounting plate includes a vertical plate and a horizontal plate. The lead screw is vertically fixed to the middle of one end face of the vertical plate, and the horizontal plate is vertically fixed to one side edge of the other end face of the vertical plate.
6. The adjustable-size horizontal opening protection device as described in claim 1, characterized in that, One of the slides engages with the end of the top surface of the first regulating tube that is away from the second regulating tube, and the other slide engages with the end of the top surface of the second regulating tube that is away from the first regulating tube.
7. The adjustable-size horizontal opening protection device as described in claim 1, characterized in that, The fixing assembly includes a first fixing bolt, a second fixing bolt, a first washer, and a second washer. The first fixing bolt passes through a first washer and a groove in sequence and is fixedly connected to the top surface of the first adjusting tube. The second fixing bolt passes through a first washer, a groove, and a second washer in sequence and is fixedly connected to the top surface of the second adjusting tube. The outer diameter of the first washer and the second washer is greater than the width of the groove, and the thickness of the second washer is equal to the outer wall thickness of the first adjusting tube.
8. The adjustable-size horizontal opening protection device as described in claim 1, characterized in that, Several anti-slip strips are evenly distributed on the top surface of the protective plate along its length.