Road and bridge construction protection net

Abstract

This utility model discloses a protective net for road and bridge construction, including columns and two side frames, which are connected by a docking assembly. The docking assembly consists of a bending pin, a docking sleeve, and an adjustment cavity as its main structure. The bending pins are symmetrically welded to both sides of the frame, and the docking sleeves are symmetrically installed on both sides of the column. The adjustment cavity contains a threaded column, a movable plate, a spring, and a pin. The threaded column is threaded to the column and passes through the adjustment cavity. The movable plate is symmetrically slidably installed in the adjustment cavity. The two ends of the spring are respectively connected to the two movable plates. The movable plates are hinged to the mounting pad through a connecting rod. The pin is fixedly connected to one side of the movable plate. This device structure uses a double set of docking assemblies to achieve synchronous connection of the two side frames, reducing the number of actual operations. The interlocking of the pin and the pin hole, combined with the inclined guidance of the guide cover, achieves fast and accurate docking, improving installation efficiency and connection stability.

Description

Technical Field

[0001] This utility model relates to the field of protective netting technology, specifically a protective netting for road and bridge construction. Background Technology

[0002] Traditional techniques for protective netting in road and bridge construction typically employ a double-column support structure. The columns are fixed to the soil through deep burial or casting, with wire mesh laid horizontally between the columns as the main protective element. This structure has significant drawbacks: the connection between the wire mesh and the columns relies entirely on bolts. For example, connecting a single column to a single piece of wire mesh requires at least two bolts. If symmetrical installation of the mesh on both sides is considered, each column requires four bolt tightening operations. This multi-bolt fixing method not only makes the installation process cumbersome (requiring manual alignment and tightening of each hole), but also necessitates reverse operation during disassembly, which is time-consuming. Furthermore, the exposed bolts are susceptible to corrosion from rainwater, making later maintenance difficult and frequent bolt replacements increase construction costs.

[0003] While some quick-connect structure improvements have emerged in existing technologies, they all have significant limitations. For example, some designs use single-point snap-fit ​​connections, which can achieve quick connection at a single point, but when a single column needs to connect to both sides of the mesh frame (i.e., forming a three-way connection structure of "column-left mesh frame-right mesh frame"), at least four independent operations (two connection points for each side of the mesh frame) are required, and the operation steps have not been fundamentally simplified.

[0004] A protective net for road and bridge construction is proposed to address the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a protective net for road and bridge construction, in order to solve the problem mentioned in the background art that in the protective net composed of bolts or other quick-connect structures, a single column needs to be tightened four times. This fixing mode not only makes the installation process cumbersome (requiring manual alignment and tightening of each hole), but also requires reverse operation during disassembly, which is time-consuming. In addition, traditional bolts are exposed to the outside and are susceptible to corrosion by rainwater, making later maintenance difficult and frequent bolt replacements increasing construction costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective net for road and bridge construction, comprising posts, with mesh frames symmetrically installed on both sides of the posts;

[0007] A docking assembly is provided between the column and the mesh frame. The docking assembly includes a bending pin, a docking sleeve, and an adjustment cavity. The bending pin is symmetrically fixedly welded to both sides of the mesh frame, the docking sleeve is symmetrically fixedly installed on both sides of the column, and the adjustment cavity is opened inside the column.

[0008] The inner wall of one side of the adjustment cavity is connected to a threaded column, and the inside of the adjustment cavity is symmetrically and slidably installed with movable plates. A spring is fixedly connected between the two movable plates. A connecting rod is rotatably connected to one side of the movable plate. The end of the connecting rod away from the movable plate is hinged to the same mounting pad. A pin is fixedly connected to the end of the movable plate away from the spring.

[0009] The threaded post has one end that extends into the adjustment cavity and rotates with the surface of the mounting plate, and a pin hole is provided on one side of the adjustment cavity.

[0010] Preferably, the inner walls of the adjusting cavity are symmetrically provided with side holes, the mating sleeve is provided with a clearance hole on one side, the pin is slidably connected to both the side holes and the clearance hole, and the threaded column is threadedly connected to the column and can move axially.

[0011] Preferably, the bent pin is inserted into the mating sleeve, the bottom end of the bent pin is provided with a guide slope, and the top end of the mating sleeve is fixedly connected with a guide cover.

[0012] Preferably, the end of the pin furthest from the moving plate has an inclined pin surface, which is inserted into the pin hole.

[0013] Preferably, the guide cover is fixedly connected to the outside of the column, and is wider at the top and narrower at the bottom.

[0014] Preferably, there are two pairs of bending pins and mating sleeves, and two adjusting cavities distributed vertically.

[0015] Compared with the prior art, the beneficial effects of this utility model are: this road and bridge construction protective net only requires two bolts to complete the limiting of the four pin points of the mesh frame on both sides, which greatly reduces the labor intensity, effectively reduces the risk of wire slippage, extends the service life of the protective net connection structure, and is convenient to install and adjust while reducing installation problems. The specific details are as follows:

[0016] 1. This threaded post does not directly generate clamping force. Compared to traditional direct fastening methods, this design greatly reduces the possibility of stripping and effectively extends the service life of the entire protective net connection structure. Simultaneously, its lower pre-tightening force requirement makes installation and adjustment more convenient and quick, reducing installation problems caused by improper pre-tightening force control. Moreover, after adjustment, the post body is located inside the adjustment cavity, not directly exposed to external wind and rain, increasing the post's rust resistance and further ensuring its performance and service life. Furthermore, the spring design allows the moving plates to pull closer together. When the threaded post moves axially outward, the pulling force of the moving plate driving the pin comes from the spring, reducing resistance when rotating the threaded post, making operation easier and less strenuous. Additionally, two bolts can limit the four pin points on both sides of the net frame, reducing workload.

[0017] 2. The guide bevel at the bottom of the bent pin cooperates with the guide cover. The guide cover can guide the bent pin to be smoothly inserted into the mating sleeve, avoiding installation difficulties and repeated adjustments caused by inaccurate alignment, greatly improving installation efficiency, reducing installation difficulty and labor intensity, and making the entire installation process of road and bridge construction protection net more convenient and efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the column;

[0020] Figure 3 This is a schematic diagram of the internal structure of the regulating cavity;

[0021] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Column; 101. Frame; 2. Connecting assembly; 201. Bending pin; 2011. Pin hole; 2012. Guide slope; 202. Connecting sleeve; 203. Adjusting cavity; 204. Threaded column; 205. Mounting pad; 206. Connecting rod; 207. Moving plate; 208. Spring; 209. Pin; 2091. Angled pin surface; 210. Side hole; 211. Clearance hole; 3. Guide cover. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 The present invention provides a technical solution: a protective net for road and bridge construction, including a column 1, with a mesh frame 101 symmetrically installed on both sides of the column 1;

[0025] A docking assembly 2 is provided between the column 1 and the mesh frame 101. The docking assembly 2 includes a bent pin 201, a docking sleeve 202, and an adjusting cavity 203. The bent pin 201 is symmetrically fixedly welded to both sides of the mesh frame 101, and the docking sleeve 202 is symmetrically fixedly installed on both sides of the column 1. The adjusting cavity 203 is opened inside the column 1. A threaded column 204 is connected through one inner wall of the adjusting cavity 203. A movable plate 207 is symmetrically slidably installed inside the adjusting cavity 203. A spring 208 is fixedly connected between the two movable plates 207. A connecting rod 206 is rotatably connected to one side of the movable plate 207. The end of the connecting rod 206 away from the moving plate 207 is hinged to the same mounting pad 205, and the end of the moving plate 207 away from the spring 208 is fixedly connected to a pin 209; wherein, the end of the threaded pin 204 extending into the adjusting cavity 203 rotates on the surface of the mounting pad 205, and a pin hole 2011 is opened on one side of the bent pin 201; when it is necessary to disassemble the mesh frame 101 and the column 1, first rotate the threaded pin 204, so that most of it moves to the outside of the column 1, the threaded pin 204 moves axially, the spring 208 pulls the moving plate 207 to make the pin 209 move horizontally, and then from the pin hole 2011 To remove the support frame 101, simply adjust two threaded posts 204 to unlock it, avoiding the need for four bolts for separate fixing as in traditional methods. When installing the support frame 101, first move it to insert the bent pin 201 into the mating sleeve 202 to initially limit the position of the support frame 1 and the support frame 101. Then rotate the threaded posts 204 to push the mounting pad 205, causing the connecting rod 206 to push the moving plate 207 to slide laterally inside the adjusting cavity 203. This allows the pin 209 to slide into the pin hole 2011, thus securing the support frame 101. The connection with the mesh frame 101 is further locked; and since the threaded post 204 does not directly generate clamping force, it is less prone to stripping, increasing service life, and the preload requirement is low, making it easy to adjust; in the locked state, the end of the threaded post 204 retracts into the adjustment cavity, reducing the exposed area, thereby reducing the risk of corrosion and increasing the difficulty of corrosion during fastening; the spring 208 can pull the moving plate 207 closer to each other, so that when the threaded post 204 moves axially outward, it only achieves avoidance, and the pulling force of the moving plate 207 driving the pin 209 to move comes from the spring 208, reducing the resistance when rotating the threaded post 204.

[0026] The inner walls of the adjusting cavity 203 are symmetrically provided with side holes 210, and the mating sleeve 202 is provided with a clearance hole 211 on one side. The pin 209 is slidably connected to both the side holes 210 and the clearance hole 211. The threaded pin 204 is threadedly connected to the column 1 and can move axially. The side holes 210 and the clearance hole 211 are connected and guide and limit the pin 209.

[0027] The bending pin 201 is inserted into the mating sleeve 202. The bottom end of the bending pin 201 is provided with a guide slope 2012, and the top end of the mating sleeve 202 is fixedly connected with a guide cover 3. The guide slope 2012, together with the guide cover 3, can guide the bending pin 201. When the mesh frame 101 is heavy and manual installation does not require precise alignment, the guide cover 3 can guide the bending pin 201 to be inserted and accurately slide into the mating sleeve 202.

[0028] The end of the pin 209 away from the moving plate 207 has an inclined pin surface 2091, which is inserted into the pin hole 2011. The inclined pin surface 2091 is inserted into the pin hole 2011, and the insertion of the bent pin 201 into the mating sleeve 202 and the insertion of the pin 209 into the pin hole 2011 form an interlock.

[0029] The guide cover 3 is fixedly connected to the outside of the column 1, and is wider at the top and narrower at the bottom.

[0030] There are two pairs of bending pins 201 and docking sleeves 202, and two adjusting cavities 203 distributed vertically.

[0031] Working principle: Before using this type of road and bridge construction safety net, it is necessary to check the overall condition of the device to ensure it can function properly. Figure 1 - Figure 4 As shown, first move the mesh frame 101 and insert the bent pins 201 on both sides of the mesh frame 101 into the connecting sleeves 202 on both sides of the column 1. Use the insertion of the bent pins 201 and the connecting sleeves 202 to initially limit the position of the column 1 and the mesh frame 101.

[0032] At this time, the guide cover 3 and the guide slope 2012 at the bottom of the bending pin 201 cooperate with each other. When the mesh frame 101 is relatively heavy and manual installation does not require precise alignment, the guide cover 3 can guide the bending pin 201 to be smoothly inserted and accurately slid into the docking sleeve 202.

[0033] After initial positioning, the threaded post 204 is rotated, connecting to the column 1 and moving axially, pushing the mounting pad 205. This, in turn, causes the connecting rod 206 to push the moving plate 207 to slide laterally inside the adjusting cavity 203. The moving plate 207 drives the pin 209 to slide, and the pin 209 is inserted into the pin hole 2011 after passing through the side hole 210 and the clearance hole 211, further locking the connection between the column 1 and the mesh frame 101. The insertion of the bent pin 201 into the mating sleeve 202 and the insertion of the pin 209 into the pin hole 2011 form an interlock, enhancing the stability of the connection.

[0034] When disassembling the protective netting, rotating the threaded post 204 moves it mostly to the outside of the column 1. During the axial movement of the threaded post 204, the spring 208 pulls the moving plate 207 closer together. The moving plate 207 drives the pin 209 to move horizontally, causing the pin 209 to be pulled out of the pin hole 2011. Since only two threaded posts 204 need to be adjusted, the net frame 101 on both sides of the column 1 can be unlocked.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective net for road and bridge construction, comprising a column (1), wherein a mesh frame (101) is symmetrically installed on both sides of the column (1); Its features are, Also includes: A docking assembly (2) is provided between the column (1) and the mesh frame (101). The docking assembly (2) includes a bending pin (201), a docking sleeve (202), and an adjustment cavity (203). The bending pin (201) is symmetrically fixedly welded to both sides of the mesh frame (101). The docking sleeve (202) is symmetrically fixedly installed on both sides of the column (1). The adjustment cavity (203) is opened inside the column (1). Among them, a threaded column (204) is connected through one inner wall of the adjustment cavity (203), and a movable plate (207) is symmetrically slidably installed inside the adjustment cavity (203). A spring (208) is fixedly connected between the two movable plates (207). A connecting rod (206) is rotatably connected to one side of the movable plate (207). The end of the connecting rod (206) away from the movable plate (207) is hinged to the same mounting pad (205). A pin (209) is fixedly connected to the end of the movable plate (207) away from the spring (208). The threaded post (204) has one end that extends into the adjustment cavity (203) and rotates with the surface of the mounting plate (205). A pin hole (2011) is provided on one side of the bent pin (201).

2. The road and bridge construction protection net according to claim 1, characterized in that: The adjusting cavity (203) has symmetrical side holes (210) on both sides of its inner wall. The mating sleeve (202) has a clearance hole (211) on one side. The pin (209) is slidably connected to both the side hole (210) and the clearance hole (211). The threaded column (204) is threadedly connected to the column (1) and can move axially.

3. The road and bridge construction protection net according to claim 2, characterized in that: The bent pin (201) is inserted into the mating sleeve (202), and a guide slope (2012) is provided at the bottom end of the bent pin (201). A guide cover (3) is fixedly connected to the top end of the mating sleeve (202).

4. The road and bridge construction protection net according to claim 1, characterized in that: The pin (209) has an inclined pin surface (2091) at one end away from the moving plate (207), and is inserted into the pin hole (2011).

5. A road and bridge construction protection net according to claim 3, characterized in that: The guide cover (3) is fixedly connected to the outside of the column (1), and is wider at the top and narrower at the bottom.

6. A road and bridge construction protection net according to claim 1, characterized in that: The bending pin (201) and the docking sleeve (202) are provided in two pairs, and the adjustment cavity (203) is provided in two pairs and distributed vertically.

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