Well opening anti-falling plate

Abstract

The utility model discloses a shaft opening anti-falling plate which is used for being installed at the position of a shaft opening and comprises a protection plate, a guide supporting mechanism, a pair of guide supporting arms and a locking assembly, the guide supporting mechanism is arranged on the inner wall of a shaft and comprises two fixed sliding blocks which are oppositely arranged, and the guide supporting arms are arranged on the two fixed sliding blocks. A guide sliding groove is formed in the fixed sliding block; a guide sliding section is arranged on the guide supporting arm, the guide sliding section is suitable for sliding on the guide sliding groove of the fixed sliding block, one end of the guide supporting arm is fixedly connected with the protection plate, the other end of the guide supporting arm is a free end, and the free end is suitable for sliding in or sliding out of the guide sliding groove of the fixed sliding block; and the locking assembly is arranged on the guide supporting arm, and the locking assembly is suitable for locking the free end to limit the guide supporting arm from sliding out of the guide sliding groove of the fixed sliding block. The utility model can be quickly assembled and disassembled, and is reliable in fixation.

Description

Technical Field

[0001] This utility model relates to a fall prevention plate for well openings, belonging to the field of municipal drainage engineering technology. Background Technology

[0002] Currently, with the development of urbanization, the number of inspection wells in urban water supply and drainage pipe networks is constantly increasing. Inspection wells are vertical shafts built at regular intervals along underground pipelines for inspecting pipes, removing sludge, and connecting pipelines at different directions and heights. During construction and maintenance, inspection wells need to be opened frequently for work.

[0003] To prevent people from accidentally falling into manholes and getting injured, fall arrestors are usually temporarily installed on the manhole covers.

[0004] After searching the existing technology, it was found that Chinese patent CN217896696U discloses an anti-fall net installation device for rainwater and sewage wells. The patent uses a fixing component and several sets of buffer limiting components to install the anti-fall net. In use, it was found that multiple sets of buffer springs need to be installed, and the installation steps are complicated. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a wellhead anti-fall plate that can be quickly installed and disassembled and is reliably fixed.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a shaft opening anti-fall plate, used for installation at the shaft opening, comprising:

[0007] Protective panel;

[0008] A guide support mechanism is disposed on the inner wall of the wellbore, and the guide support mechanism includes two fixed sliders disposed opposite to each other, and the fixed sliders are provided with guide grooves.

[0009] A pair of guide support arms, each guide support arm having a guide sliding section adapted to slide on the guide groove of the fixed slider. One end of each guide support arm is fixedly connected to the protective plate, and the other end is a free end adapted to slide into or out of the guide groove of the fixed slider.

[0010] A locking component is disposed on the guide support arm, the locking component being adapted to lock the free end to restrict the guide support arm from sliding out of the guide groove of the fixed slider.

[0011] Furthermore, a specific structure for a fixed slider is provided, the fixed slider comprising:

[0012] A fixed mounting plate is provided with horizontal guide protrusions;

[0013] An adjustable slider has a guide groove on one side that mates with the guide support arm, and a steering guide groove on the other side. The steering guide groove includes a horizontal groove section and a vertical groove section that are connected to each other. The horizontal groove section is connected to one edge of the adjustable slider.

[0014] The horizontal guide protrusion on the fixed mounting plate is adapted to slide into the horizontal groove section of the steering guide groove, and rotate into the vertical groove section after sliding into the horizontal groove section.

[0015] Furthermore, the guide support arm is provided with a cross guide groove, which includes a transverse guide groove section and a longitudinal guide groove section that are perpendicular to each other and connected. The transverse guide groove section passes through the left and right sides of the guide support arm, and one end of the longitudinal guide groove section extends through to the mating surface between the guide support arm and the fixed slider.

[0016] The locking component includes:

[0017] A wedge-shaped mating block, wherein the wedge-shaped mating block is slidably disposed within the longitudinal guide groove section, and the wedge-shaped mating block is provided with a through inclined guide groove;

[0018] A lateral adjusting block is slidably disposed within the lateral guide groove section and passes through the inclined guide groove of the wedge-shaped mating block. The lateral adjusting block is provided with a wedge-shaped protrusion that mates with the inclined guide groove.

[0019] When the lateral adjusting block slides along the lateral guide groove, it is adapted to abut against the inclined guide groove through the wedge-shaped protrusion, thereby driving the wedge-shaped mating block to move along the longitudinal guide groove, so that one end of the wedge-shaped mating block extends out of the longitudinal guide groove and abuts against the fixed slider, thereby restricting the guide support arm from sliding out of the guide groove of the fixed slider.

[0020] Furthermore, a specific structure of a limiting component is provided, and the wellhead anti-fall plate also includes a limiting component, which includes a limiting bolt and a threaded through hole;

[0021] The threaded through hole is provided on the guide support arm and intersects and communicates with the inclined guide groove;

[0022] The limiting bolt is threadedly connected to the threaded through hole, and the end of the limiting bolt abuts against the side wall of the transverse adjusting block.

[0023] Furthermore, the wellhead anti-fall plate also includes a warning strip, which is set on the surface of the protective plate.

[0024] Furthermore, the protective plate has a hollow structure.

[0025] Furthermore, the outer periphery of the protective plate has a rounded transition.

[0026] Furthermore, the wellhead anti-fall plate also includes a handle, which is installed on the protective plate.

[0027] By adopting the above technical solution, this utility model has the following beneficial effects:

[0028] During operation, a guide support mechanism is first installed on the inner wall of the shaft, comprising two opposing fixed sliders, each with a guide groove. During installation, the free ends of a pair of guide support arms are slid into the corresponding guide grooves of the fixed sliders. Next, by sliding the lateral adjusting block on the locking assembly, a wedge-shaped mating block moves along the longitudinal guide groove, causing it to abut against the fixed slider, thereby locking the free ends of the guide support arms and preventing them from sliding out of the guide grooves. This completes the installation and fixing of the protective plate.

[0029] Furthermore, the fixed slider is positioned by engaging with the horizontal guide protrusion on the fixed mounting plate via the steering guide groove on the adjustable slider. The limit bolts in the limit assembly engage with the threaded through holes to fix the position of the lateral adjustment block. The protective plate features a hollow structure with rounded edges on the outer perimeter, reducing overall weight. Warning strips make hazardous areas at the well opening easier to identify, and a handle facilitates the transport of the protective plate.

[0030] In summary, this utility model has both quick installation and disassembly functions, and the hollow structure of the protective plate and the setting of the warning strip enable it to have a warning function while ensuring safety protection. Attached Figure Description

[0031] Figure 1 This is a front view of the wellhead anti-fall plate of this utility model;

[0032] Figure 2 for Figure 1 Cross-sectional view along line AA;

[0033] Figure 3 This is a schematic diagram of the locking assembly of the wellhead anti-fall plate of this utility model;

[0034] Figure 4 This is a three-dimensional structural diagram of the fixing slider of the wellhead anti-fall plate of this utility model;

[0035] Figure 5 This is a three-dimensional structural diagram of the fixing mounting plate of the fixing slider of the wellhead anti-fall plate of this utility model. Detailed Implementation

[0036] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0037] like Figure 1-5 As shown, a shaft opening anti-fall plate, used for installation at the shaft opening, includes:

[0038] Protective panel 1;

[0039] Guide support mechanism 2 is installed on the inner wall of the shaft. Guide support mechanism 2 includes two fixed sliders arranged opposite to each other. The fixed sliders are provided with guide grooves.

[0040] A pair of guide support arms 3, each guide support arm 3 is provided with a guide sliding section, the guide sliding section is adapted to slide on the guide groove of the fixed slider, one end of the guide support arm 3 is fixedly connected to the protective plate 1, and the other end is a free end, the free end is adapted to slide into or out of the guide groove of the fixed slider;

[0041] Locking component 4 is disposed on guide support arm 3 and is adapted to lock the free end to restrict guide support arm 3 from sliding out of guide groove of fixed slider.

[0042] In this embodiment, as Figure 1-2 As shown, firstly, a guide support mechanism 2 is installed on the inner wall of the shaft, including two fixed sliders arranged opposite each other, each fixed slider having a guide groove. During installation, the free ends of a pair of guide support arms 3 are slid into the guide grooves of the corresponding fixed sliders. Next, by sliding the lateral adjusting block 42 on the locking assembly 4, the wedge-shaped mating block 41 is moved along the longitudinal guide groove section, causing the wedge-shaped mating block 41 to abut against the fixed slider, thereby locking the free ends of the guide support arms 3 and preventing them from sliding out of the guide grooves. The installation and fixing of the protective plate 1 is then completed.

[0043] Specifically, such as Figure 2 and Figure 4-5 As shown, the fixed slider can have the following structure, including:

[0044] A fixed mounting plate 21 is provided with a horizontal guide protrusion.

[0045] The adjustable slider 22 has a guide groove on one side that cooperates with the guide support arm 3, and a steering guide groove on the other side. The steering guide groove includes a horizontal groove section and a vertical groove section that are connected to each other. The horizontal groove section is connected to one edge of the adjustable slider 22.

[0046] The horizontal guide protrusion on the fixed mounting plate 21 is adapted to slide into the horizontal groove section of the steering guide groove, and rotate into the vertical groove section after sliding into the horizontal groove section.

[0047] In this embodiment, as Figure 4-5 As shown, the mounting plate 21 is also provided with four fixing holes. During installation, first drill holes in the inner wall of the well, and then use expansion screws to fix the mounting plate 21 in the well.

[0048] During installation, the adjustable slider 22 first aligns with the horizontal guide protrusion on the fixed mounting plate 21 via the horizontal section of its steering guide groove. The adjustable slider 22 is then pushed horizontally, causing the horizontal guide protrusion to slide into the horizontal groove. Once the horizontal guide protrusion is in place, the adjustable slider 22 rotates around it, causing the horizontal guide protrusion to enter the vertical groove, thus completing the installation of the adjustable slider 22 with the fixed mounting plate 21.

[0049] Specifically, such as Figure 2-3 As shown, the guide support arm 3 is provided with a cross guide groove. The cross guide groove includes a transverse guide groove section and a longitudinal guide groove section that are perpendicular to each other and connected. The transverse guide groove section passes through the left and right sides of the guide support arm 3, and one end of the longitudinal guide groove section extends and passes through the mating surface between the guide support arm 3 and the fixed slider.

[0050] Locking component 4 includes:

[0051] The wedge-shaped mating block 41 is slidably disposed in the longitudinal guide groove section, and the wedge-shaped mating block 41 is provided with a through inclined guide groove.

[0052] The lateral adjustment block 42 is slidably disposed in the lateral guide groove section and passes through the inclined guide groove of the wedge-shaped mating block 41. The lateral adjustment block 42 is provided with a wedge-shaped protrusion that mates with the inclined guide groove.

[0053] When the lateral adjusting block 42 slides along the lateral guide groove, it is suitable to abut against the inclined guide groove through the wedge-shaped protrusion, thereby driving the wedge-shaped mating block 41 to move along the longitudinal guide groove, so that one end of the wedge-shaped mating block 41 extends out of the longitudinal guide groove and abuts against the fixed slider, thereby restricting the guide support arm 3 from sliding out of the guide groove of the fixed slider.

[0054] In this embodiment, as Figure 2-3 As shown, during use, by pushing the lateral adjusting block 42, its wedge-shaped protrusion slides within the inclined guide groove, converting the horizontal movement into vertical movement, which in turn drives the wedge-shaped mating block 41 to move outward within the longitudinal guide groove section. When the wedge-shaped mating block 41 moves outward to contact the side of the fixed slider, it prevents the guide support arm 3 from disengaging from the guide groove of the fixed slider. In the reverse operation, pulling the lateral adjusting block 42 causes the wedge-shaped mating block 41 to move inward, releasing the locking state and allowing the guide support arm 3 to be pulled out from the fixed slider.

[0055] Specifically, the wellhead anti-fall plate also includes a limiting component (not shown in the figure), which includes a limiting bolt and a threaded through hole;

[0056] A threaded through hole is provided on the guide support arm 3 and intersects and communicates with the inclined guide groove;

[0057] The limiting bolt is threadedly connected to the threaded through hole, and the end of the limiting bolt abuts against the side wall of the transverse adjusting block 42.

[0058] In this embodiment, as Figure 2-3 As shown, the limiting bolt is installed on the guide support arm 3 through a threaded engagement with the threaded through hole. When the limiting bolt is screwed in, its end passes through the threaded through hole and abuts against the side wall of the lateral adjusting block 42, thereby fixing the lateral adjusting block 42 in the set position.

[0059] During installation and adjustment, the contact force between the end of the limiting bolt and the side wall of the transverse adjusting block 42 can be adjusted by rotating the limiting bolt. When it is necessary to adjust the position of the transverse adjusting block 42, the limiting bolt can be loosened, and after adjustment, the limiting bolt can be tightened again to fix the transverse adjusting block 42.

[0060] Specifically, the fall arrestor at the shaft entrance also includes a warning strip (not shown in the figure), which is set on the surface of the protective plate 1.

[0061] Specifically, such as Figure 1 As shown, the protective plate 1 has a hollow structure.

[0062] Specifically, such as Figure 1 As shown, the outer periphery of the protective plate 1 has a rounded transition.

[0063] Specifically, such as Figure 1 As shown, the wellhead anti-fall plate also includes a handle 5, which is installed on the protective plate 1.

[0064] In this embodiment, as Figure 1-2 As shown, Figure 1 As shown, the protective plate 1 adopts a hollow design, which reduces the overall weight while ensuring the protective function and facilitating rainwater drainage. The outer perimeter of the protective plate 1 is rounded. A warning strip is set on the surface of the protective plate 1 to mark the location of the fall arrestor at the wellhead; the warning strip uses conspicuous red and white stripes. Two handles 5 are provided.

[0065] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shaft opening anti-fall plate, used for installation at the shaft opening, characterized in that, include: Protective plate (1); A guide support mechanism (2) is provided on the inner wall of the wellbore. The guide support mechanism (2) includes two fixed sliders arranged opposite to each other, and the fixed sliders are provided with guide grooves. A pair of guide support arms (3), the guide support arms (3) are provided with guide sliding sections, the guide sliding sections are adapted to slide on the guide groove of the fixed slider, one end of the guide support arm (3) is fixedly connected to the protective plate (1), and the other end is a free end, the free end is adapted to slide into or out of the guide groove of the fixed slider; A locking component (4) is disposed on the guide support arm (3) and is adapted to lock the free end to restrict the guide support arm (3) from sliding out of the guide groove of the fixed slider.

2. The wellhead anti-fall plate according to claim 1, characterized in that, The fixed slider includes: A fixed mounting plate (21) is provided with a horizontal guide protrusion; Adjustable slider (22), one side of the adjustable slider (22) is provided with a guide groove that cooperates with the guide support arm (3), and the other side is provided with a steering guide groove. The steering guide groove includes a horizontal groove section and a vertical groove section that are connected. The horizontal groove section is connected to one side edge of the adjustable slider (22). The horizontal guide protrusion on the fixed mounting plate (21) is adapted to slide into the steering guide groove through the horizontal groove section of the steering guide groove, and rotate into the vertical groove section after the horizontal groove section slides into place.

3. The wellhead anti-fall plate according to claim 1, characterized in that, The guide support arm (3) is provided with a cross guide groove. The cross guide groove includes a horizontal guide groove section and a vertical guide groove section that are perpendicular to each other and connected. The horizontal guide groove section passes through the left and right sides of the guide support arm (3). One end of the vertical guide groove section extends and passes through the mating surface between the guide support arm (3) and the fixed slider. The locking component (4) includes: A wedge-shaped mating block (41) is slidably disposed in the longitudinal guide groove section, and the wedge-shaped mating block (41) is provided with a through inclined guide groove; A transverse adjustment block (42) is slidably disposed in the transverse guide groove section and passes through the inclined guide groove of the wedge-shaped mating block (41). The transverse adjustment block (42) is provided with a wedge-shaped protrusion that mates with the inclined guide groove. When the lateral adjustment block (42) slides along the lateral guide groove, it is adapted to abut against the inclined guide groove through the wedge-shaped protrusion, thereby driving the wedge-shaped mating block (41) to move along the longitudinal guide groove, so that one end of the wedge-shaped mating block (41) extends out of the longitudinal guide groove and abuts against the fixed slider, thereby restricting the guide support arm (3) from sliding out of the guide groove of the fixed slider.

4. The wellhead anti-fall plate according to claim 3, characterized in that, It also includes a limiting component, which includes a limiting bolt and a threaded through hole; The threaded through hole is provided on the guide support arm (3) and intersects and communicates with the inclined guide groove; The limiting bolt is threadedly connected to the threaded through hole, and the end of the limiting bolt abuts against the side wall of the transverse adjusting block (42).

5. The wellhead anti-fall plate according to claim 1, characterized in that, It also includes a warning strip, which is disposed on the surface of the protective plate (1).

6. The wellhead anti-fall plate according to claim 1, characterized in that, The protective plate (1) has a hollow structure.

7. The wellhead anti-fall plate according to claim 1, characterized in that, The outer periphery of the protective plate (1) is provided with a rounded transition.

8. The wellhead anti-fall plate according to claim 1, characterized in that, It also includes a handle (5) which is mounted on the protective plate (1).

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