Fence alarm

Abstract

This utility model relates to the field of construction technology and discloses an alarm device for construction site fencing. It includes a protective net, a frame installed outside the protective net, and an audible and visual alarm fixedly installed at the center of the top of the frame. The surface of the frame has mounting holes on both sides of the audible and visual alarm, and a control component is installed inside each mounting hole. The front surface of the control component extends to the outside of the frame. After the protective net is correctly placed and fixed, a screw abuts against and drives a sliding column to press a switch, turning off the audible and visual alarm. When the frame is removed or the protective net is moved, the screw detaches, and the alarm activates to warn workers, preventing safety accidents caused by protective failure and ensuring the safety of personnel and equipment. Furthermore, this device can be quickly assembled on existing frames; only the control component needs to be inserted through holes, and pressure is applied to the sealed cavity for fixation. It eliminates the need for remanufacturing the fencing, making it highly applicable, low-cost, and widely applicable in construction site fencing scenarios.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and more specifically to an alarm device for construction site fencing. Background Technology

[0002] In building construction, the fencing around the elevator pit and elevator shaft is an important facility to ensure construction safety. Its main function is to prevent people or objects from falling accidentally and to avoid safety accidents. Existing protective fencing usually adopts a frame structure with protective netting or protective panels, and is installed above or outside the elevator shaft through simple fixing methods.

[0003] However, due to the complex environment of the construction site and the frequent operation of personnel and equipment, these fences are often moved unintentionally or intentionally during use. Once the position of the fence is changed, the original protective function fails, which may lead to serious safety accidents such as people falling into the foundation pit or elevator shaft, or construction equipment overturning and sliding down. This not only threatens the lives of construction workers, but also easily causes significant property damage and delays in the construction period. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an alarm device for fencing to solve the problems existing in the background art.

[0005] The utility model provides the following technical solution: an alarm device for a fence, including a protective net, a frame set outside the protective net, and an audible and visual alarm fixedly installed at the top center of the frame. The surface of the frame has mounting holes on both sides of the audible and visual alarm. Each mounting hole has a control component installed inside it. The front surface of the control component extends to the outside of the frame. Both control components can control the opening and closing of the audible and visual alarm.

[0006] Furthermore, the control component includes a fixed base inserted into the mounting hole, a sliding groove formed inside the fixed base, a normally open tactile switch fixedly installed inside the fixed base, the input end of the normally open tactile switch extending into the sliding groove, a sliding column slidably connected inside the sliding groove, a limit block fixedly connected to the top of the sliding column, a spring fixedly connected to the surface of the limit block, a limit groove communicating with the inside of the sliding groove formed inside the fixed base, a screw threadedly connected to the center of the sliding column, a pressure boosting component installed inside the fixed base, and a positioning component communicating with the output end of the pressure boosting component installed inside the fixed base.

[0007] Furthermore, the booster assembly includes a sealed cavity formed inside the fixed seat, the fixed seat has a groove formed on the surface away from the normally open tactile switch, a valve core valve is fixedly installed inside the fixed seat, the inside of the valve core valve is connected to the inside of the sealed cavity, and a connecting pipe connected to the inside of the sealed cavity is fixedly connected inside the fixed seat.

[0008] The positioning component includes a square groove inside the fixed base, a toothed plate slidably connected inside the square groove, a fixing rod fixedly connected at equal intervals on the surface of the toothed plate, a sealing block fixedly connected to the surface of the fixing rod away from the toothed plate, and a square cavity matching the sealing block opened inside the fixed base, and the inside of the sealing cavity is connected to the inside of the square cavity through a connecting pipe.

[0009] Furthermore, the outer surface of the limiting block is slidably connected to the inside of the limiting groove, a threaded hole is provided at the center of the inside of the sliding column, the outer surface of the screw is threadedly connected to the inside of the threaded hole, and the end of the screw away from the sliding column is arc-shaped.

[0010] Furthermore, the end of the spring away from the limiting block abuts against the inner wall of the limiting groove, and the surface of the toothed plate away from the fixing rod abuts against the inner wall of the mounting hole.

[0011] Furthermore, the interior of the square cavity is under high pressure, and the input end of the valve core extends into the interior of the groove.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. In use, when the protective net is correctly placed and fixed, the screw rod abuts against the wall or ground, causing the sliding column to press the normally open tactile switch, thus turning off the audible and visual alarm. However, once the frame is dismantled or the protective net is moved, the screw rod disengages from the abutment, and the spring causes the sliding column to move away from the normally open tactile switch, immediately turning on the audible and visual alarm. This allows workers to be alerted to any abnormalities in the enclosure and to promptly conduct inspections and handle the situation. It effectively prevents the protective function from failing due to changes in the enclosure's position, thus avoiding serious safety accidents such as personnel falling or equipment slipping. This greatly ensures the safety of personnel and equipment at construction sites.

[0014] 2. This utility model can be quickly assembled and used on existing frames. Before use, only mounting holes need to be opened on the existing frame. After inserting the control components, the sealing cavity is pressurized by connecting the valve core valve through the pressurization equipment. This allows the toothed plate in the positioning component to tightly abut against the inner wall of the mounting hole, achieving rapid fixation with the frame. There is no need to reproduce the enclosure, which greatly improves the applicability of the device, reduces the cost of use, and can be widely used in various construction enclosure scenarios. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the control component in this utility model;

[0017] Figure 3 This is a cross-sectional view of the control component in this utility model;

[0018] Figure 4 This is a schematic diagram showing the connection between the sliding column and the screw in this utility model;

[0019] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 6 for Figure 3 Enlarged view of point B in the middle.

[0021] The attached diagram is labeled as follows: 1. Protective net; 2. Frame; 3. Audible and visual alarm; 4. Mounting hole; 5. Control component; 51. Fixing base; 52. Slide groove; 54. Normally open tactile switch; 55. Sliding column; 551. Threaded hole; 56. Limiting block; 57. Spring; 58. Limiting groove; 59. Screw; 510. Pressurization component; 5101. Sealing cavity; 5102. Valve core; 5103. Groove; 5104. Connecting pipe; 511. Positioning component; 5111. Square groove; 5112. Toothed plate; 5113. Fixing rod; 5114. Sealing block; 5115. Square cavity. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0023] Figures 1-6 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-6 The present invention will be further described below.

[0024] An alarm device for fencing includes a protective net 1, a frame 2 set outside the protective net 1, and an audible and visual alarm 3 fixedly installed at the top center of the frame 2. The surface of the frame 2 has mounting holes 4 through both sides of the audible and visual alarm 3. Each mounting hole 4 has a control component 5 installed inside it. The front surface of the control component 5 extends to the outside of the frame 2. Both control components 5 can control the opening and closing of the audible and visual alarm 3.

[0025] In this implementation plan, two control components 5 are set up to control the opening and closing of the audible and visual alarm 3. When the protective net 1 and the frame 2 are properly installed and in a fixed position, the control components 5 can keep the audible and visual alarm 3 in a closed state. Once the protective net 1 or the frame 2 moves abnormally, the control components 5 can react quickly, turn on the audible and visual alarm 3, and promptly issue an alarm to the surrounding staff to remind them to pay attention to the potential safety hazards of the fence, avoid safety accidents caused by the failure of the protective function due to the change of the fence position, and ensure the safety of personnel and equipment at the construction site.

[0026] Specifically, the control component 5 includes a fixed base 51 inserted into the mounting hole 4. The fixed base 51 has a slide groove 52 inside. A normally open tactile switch 54 is fixedly installed inside the fixed base 51. The input end of the normally open tactile switch 54 extends into the slide groove 52. A sliding column 55 is slidably connected inside the slide groove 52. A limit block 56 is fixedly connected to the top of the sliding column 55. A spring 57 is fixedly connected to the surface of the limit block 56. A limit groove 58 communicating with the inside of the slide groove 52 is opened inside the fixed base 51. A screw 59 is threadedly connected to the center of the inside of the sliding column 55. A pressure boosting component 510 is installed inside the fixed base 51. A positioning component 511 communicating with the output end of the pressure boosting component 510 is installed inside the fixed base 51.

[0027] In this embodiment, the fixed base 51 is used to support and install other components, providing a stable support structure for the entire control assembly 5. The cooperation between the slide groove 52 and the sliding column 55 allows the sliding column 55 to slide smoothly within the fixed base 51, facilitating its cooperation with the normally open tactile switch 54 to control the audible and visual alarm 3. The normally open tactile switch 54 is a key component for controlling the opening and closing of the audible and visual alarm 3. Under normal circumstances, it is in the open state, and it will only close when pressed by the sliding column 55, thereby controlling the circuit on and off. The limit block 56 and the limit groove 58 cooperate with each other to limit the sliding range of the sliding column 55, preventing it from coming out of the slide groove 52 and ensuring the stable operation of the device. The spring 57 provides elastic force. When the screw 59 disengages from the contact, the spring 57 can drive the sliding column 55 to reset, causing the normally open tactile switch 54 to return to the open state, and the audible and visual alarm 3 will sound. The screw 59 is used to abut against the wall or ground. By rotating the screw 59, its extension length can be adjusted to adapt to different installation environments, ensuring that the sliding column 55 can accurately press the normally open tactile switch 54. The boosting component 510 and the positioning component 511 work together to achieve quick fixation of the control component 5 and the frame 2 without complicated installation steps, thus improving the installation efficiency and stability of the device.

[0028] Specifically, the booster assembly 510 includes a sealing cavity 5101 opened inside the fixed seat 51. The fixed seat 51 has a groove 5103 on the surface away from the normally open tactile switch 54. A valve core valve 5102 is fixedly installed inside the fixed seat 51. The inside of the valve core valve 5102 is connected to the inside of the sealing cavity 5101. A connecting pipe 5104 connected to the inside of the sealing cavity 5101 is fixedly connected inside the fixed seat 51.

[0029] The positioning component 511 includes a square groove 5111 formed inside the fixed base 51. A toothed plate 5112 is slidably connected inside the square groove 5111. A fixing rod 5113 is fixedly connected at equal intervals on the surface of the toothed plate 5112. A sealing block 5114 is fixedly connected to the surface of the fixing rod 5113 away from the toothed plate 5112. A square cavity 5115 matching the sealing block 5114 is formed inside the fixed base 51. The interior of the sealing cavity 5101 is connected to the interior of the square cavity 5115 through a connecting pipe 5104.

[0030] In this embodiment, the sealing cavity 5101 is the core component of the pressurization assembly 510. By pressurizing its interior, the pressure can be transmitted to the positioning assembly 511. The valve core valve 5102 facilitates the connection of external pressurization equipment to pressurize the sealing cavity 5101, while also preventing gas leakage and ensuring pressure stability within the sealing cavity 5101. The groove 5103 provides operating space for connecting pressurization equipment, facilitating pressurization operations. The connecting pipe 5104 connects the sealing cavity 5101 and the square cavity 5115, allowing the pressure within the sealing cavity 5101 to be transmitted to the square cavity 5115. Cavity 5115 drives the positioning component 511 to work. The square groove 5111 provides a sliding track for the toothed plate 5112, ensuring that the toothed plate 5112 can slide smoothly under pressure. The toothed plate 5112 slides under pressure, driving the fixing rod 5113 and the sealing block 5114 to move, so that the toothed plate 5112 is tightly against the inner wall of the mounting hole 4, realizing the fixation of the control component 5 and the frame 2. The sealing block 5114 matches the square cavity 5115, which can effectively prevent pressure leakage, ensure the normal operation of the positioning component 511, and enhance the stability of the connection between the control component 5 and the frame 2.

[0031] Specifically, the outer surface of the limiting block 56 is slidably connected to the inside of the limiting groove 58, a threaded hole 551 is provided at the center of the inside of the sliding column 55, the outer surface of the screw 59 is threadedly connected to the inside of the threaded hole 551, and the end of the screw 59 away from the sliding column 55 is arc-shaped.

[0032] In this embodiment, the limiting block 56 slides within the limiting groove 58, precisely controlling the sliding direction of the sliding column 55 and ensuring stable sliding of the sliding column 55 within the sliding groove 52 without deviation. This allows for accurate pressing or releasing of the normally open tactile switch 54. The threaded connection between the threaded hole 551 and the screw 59 facilitates adjusting the length of the screw 59 extending beyond the sliding column 55 by rotating it, adapting to different installation scenarios and wall / floor conditions. This ensures that the screw 59 reliably abuts against the wall or floor, driving the sliding column 55 to press the normally open tactile switch 54. The end of the screw 59 furthest from the sliding column 55 is arc-shaped. This design increases the contact area between the screw 59 and the wall or floor, dispersing pressure and preventing damage to the wall or floor during contact. It also improves the stability of contact, ensuring that the sliding column 55 can properly press the normally open tactile switch 54.

[0033] Specifically, the end of the spring 57 away from the limiting block 56 abuts against the inner wall of the limiting groove 58, and the surface of the toothed plate 5112 away from the fixing rod 5113 abuts against the inner wall of the mounting hole 4.

[0034] In this embodiment, the elastic force of spring 57 acts between limit block 56 and limit groove 58. When screw 59 disengages from the wall or ground, spring 57 can quickly drive sliding column 55 away from normally open tactile switch 54, so that normally open tactile switch 54 returns to the open state, and the audible and visual alarm 3 alarms in time, ensuring the timeliness and reliability of the alarm. Tooth plate 5112 abuts against the inner wall of mounting hole 4, and uses friction to firmly fix control component 5 in mounting hole 4 of frame 2, preventing control component 5 from loosening or falling off during use, enhancing the stability and reliability of the entire device, ensuring that control component 5 can work normally, and realizing effective control of audible and visual alarm 3.

[0035] Specifically, the interior of the square cavity 5115 is under high pressure, and the input end of the valve core valve 5102 extends into the interior of the groove 5103.

[0036] In this embodiment, the high pressure inside the square cavity 5115 can push the sealing block 5114 and the toothed plate 5112 to move, so that the toothed plate 5112 tightly abuts against the inner wall of the mounting hole 4, thereby firmly fixing the control component 5 to the frame 2, ensuring that the control component 5 will not loosen during use and stably play the role of controlling the audible and visual alarm 3. The input end of the valve core valve 5102 extends into the groove 5103, which makes it convenient for the staff to use the pressurizing equipment to connect the valve core valve 5102 to pressurize the sealing cavity 5101. The operation is more convenient, the installation efficiency of the device is improved, and the subsequent maintenance and adjustment of the control component 5 are also convenient.

[0037] The working principle and usage process of this utility model are as follows: Before use, an installation hole 4 is opened on the existing frame 2. Then, the control component 5 is inserted into the installation hole 4 as a whole. The valve core valve 5102 is connected to the pressurizing device to pressurize the sealing cavity 5101. The strong pressure inside the sealing cavity 5101 will enter the square cavity 5115 through the connecting pipe 5104. Due to the strong pressure, the sealing block 5114 slides away from the connecting pipe 5104. The sealing block 5114 drives the toothed plate 5112 to slide through the fixing rod 5113, so that the surface of the toothed plate 5112 abuts against the inner wall of the installation hole 4, realizing the quick fixed assembly with the frame 2. Therefore, it can be directly assembled and used on the existing fence without the need for re-production, which improves the applicability.

[0038] In use, place the protective net 1 outside the elevator pit and elevator shaft opening, so that the surface of the frame 2 rests against the wall or ground. The tip of the screw 59 will first connect with the wall or ground, and drive the sliding column 55 to slide towards the normally open tactile switch 54. Ensure that after the protective net 1 is properly placed or fixed, the sliding column 55 can press the input terminal of the normally open tactile switch 54 to activate it. After pressing the normally open tactile switch 54, the audible and visual alarm 3 will be in the off state. When the protective net 1 is properly placed or fixed, the sliding column 55 should not be able to press the input terminal of the normally open tactile switch 54. When the input end of switch 54 is pressed to start, the length of screw 59 extending from the threaded hole 551 can be adjusted by rotating screw 59. When the screw 59 is adjusted to a suitable length, when frame 2 is removed or protective net 1 is moved, screw 59 will disengage from the wall or ground. Through the elasticity of spring 57, limit block 56 drives sliding column 55 to slide away from normally open tactile switch 54 and disengage from the input end of normally open tactile switch 54. The audible and visual alarm 3 is in the open state, alerting staff to conduct timely inspections through audible and visual alarms.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. An alarm device for fencing, comprising a protective net (1), a frame (2) disposed outside the protective net (1), and an audible and visual alarm (3) fixedly installed at the center of the top of the frame (2), characterized in that: The surface of the frame (2) is provided with mounting holes (4) on both sides of the audible and visual alarm (3). Each mounting hole (4) is equipped with a control component (5). The front surface of the control component (5) extends to the outside of the frame (2). Both control components (5) can control the opening and closing of the audible and visual alarm (3).

2. The alarm device for fencing according to claim 1, characterized in that: The control component (5) includes a fixed base (51) inserted into the mounting hole (4). The fixed base (51) has a groove (52) inside. A normally open tactile switch (54) is fixedly installed inside the fixed base (51). The input end of the normally open tactile switch (54) extends into the groove (52). A sliding column (55) is slidably connected inside the groove (52). A limit block (56) is fixedly connected to the top of the sliding column (55). A spring (57) is fixedly connected to the surface of the limit block (56). A limit groove (58) communicating with the inside of the groove (52) is opened inside the fixed base (51). A screw rod (59) is threadedly connected to the center of the sliding column (55). A pressure boosting component (510) is installed inside the fixed base (51). A positioning component (511) communicating with the output end of the pressure boosting component (510) is installed inside the fixed base (51).

3. The alarm device for fencing according to claim 2, characterized in that: The booster assembly (510) includes a sealed cavity (5101) formed inside a fixed base (51). The fixed base (51) has a groove (5103) on its surface away from the normally open tactile switch (54). A valve core valve (5102) is fixedly installed inside the fixed base (51). The interior of the valve core valve (5102) is connected to the interior of the sealed cavity (5101). A connecting pipe (5104) connected to the interior of the sealed cavity (5101) is fixedly connected inside the fixed base (51). The positioning component (511) includes a square groove (5111) formed inside the fixed base (51). A toothed plate (5112) is slidably connected inside the square groove (5111). A fixing rod (5113) is fixedly connected at equal intervals on the surface of the toothed plate (5112). A sealing block (5114) is fixedly connected to the surface of the fixing rod (5113) away from the toothed plate (5112). A square cavity (5115) matching the sealing block (5114) is formed inside the fixed base (51). The interior of the sealing cavity (5101) is connected to the interior of the square cavity (5115) through a connecting pipe (5104).

4. The alarm device for fencing according to claim 2, characterized in that: The outer surface of the limiting block (56) is slidably connected to the inside of the limiting groove (58). A threaded hole (551) is provided at the center of the inside of the sliding column (55). The outer surface of the screw (59) is threadedly connected to the inside of the threaded hole (551). The end of the screw (59) away from the sliding column (55) is arc-shaped.

5. An alarm device for fencing according to claim 3, characterized in that: The end of the spring (57) away from the limiting block (56) abuts against the inner wall of the limiting groove (58), and the surface of the toothed plate (5112) away from the fixing rod (5113) abuts against the inner wall of the mounting hole (4).

6. The alarm device for fencing according to claim 3, characterized in that: The interior of the square cavity (5115) is under high pressure, and the input end of the valve core valve (5102) extends into the interior of the groove (5103).

Images