Automatic tensioning device for safety fence of construction site

Abstract

The utility model relates to the technical field of protective net tensioner, especially for a kind of safety protective net automatic tensioner for construction site, including mounting disc, the front end of mounting disc is fixedly connected with connecting rod, the front end of connecting rod is fixedly connected with self-adapting fixed component, and the outside of self-adapting fixed component is equipped with elastic mechanism;Self-adapting fixed component includes fixed base, the side fixed connection of fixed base front end face has hook arm, the inner wall of hook arm is fixedly connected with arc clamping block, the outer surface of arc clamping block is fixedly connected with V-shaped antiskid tooth, the rear end of arc clamping block is fixedly connected with elastic antiskid spring piece, and the front surface of elastic antiskid spring piece is fixedly connected with antiskid convex strip, in the utility model, effectively solve the problem that protective net tensioner is difficult to adapt to different diameter fence column and is prone to shift, ensure that device is firmly fixed, realize safety protective net accurate installation, improve installation quality and protection effect, meet efficient, accurate installation demand.

Description

Technical Field

[0001] This utility model relates to the technical field of protective net tensioning devices, specifically an automatic tensioning device for safety protective nets used on construction sites. Background Technology

[0002] The automatic tensioning device for safety nets at construction sites is a piece of equipment used to improve the reliability of safety nets. By controlling the tension, it avoids the damage to the net caused by excessive tightness or looseness due to traditional manual adjustment, thus reducing maintenance costs.

[0003] Since safety nets used on construction sites are mostly transported in rolls, they need to be unrolled, erected, and attached to the fence posts during installation. However, because the netting has been rolled up for a long time, it is easy for it to automatically roll back after being unrolled due to inertia. Multiple people are needed to hold the netting in place. To solve this problem, an automatic tensioning device is connected and fixed to the fence posts commonly used on construction sites.

[0004] However, it was found during use that due to the different diameters of the fence posts at construction sites, the tensioning device is difficult to effectively contact fence posts of different diameters. During the tensioning process, it is easily affected by external factors such as pulling force and slight vibration, causing it to move up and down on the surface of the fence post, which in turn causes the safety net to tilt, resulting in inaccurate installation, affecting the installation quality and subsequent protective effect of the safety net, and failing to meet the requirements of efficient and accurate installation. Therefore, an automatic tensioning device for safety nets for construction sites is proposed to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic tensioning device for safety nets used on construction sites, in order to solve the problem that, due to the different diameters of the fence posts on construction sites, the tensioning device is difficult to effectively contact fence posts of different diameters. During the tensioning process, it is easily affected by external factors such as pulling force and slight vibration, causing the safety net to move up and down on the surface of the fence post, which in turn causes the safety net to tilt, resulting in inaccurate installation and affecting the installation quality and subsequent protective effect of the safety net.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automatic tensioning device for safety nets used on construction sites includes an installation plate. A connecting rod is fixedly connected to the front end of the installation plate, and an adaptive fixing component is fixedly connected to the front end of the connecting rod. An elastic mechanism is installed on the outer side of the adaptive fixing component. The adaptive fixing component includes a fixing base, a hook arm is fixedly connected to one side of the front face of the fixing base, an arc-shaped locking block is fixedly connected to the inner wall of the hook arm, a V-shaped anti-slip tooth pattern is fixedly connected to the outer surface of the arc-shaped locking block, an elastic anti-slip spring is fixedly connected to the rear end of the arc-shaped locking block, an anti-slip protrusion is fixedly connected to the front surface of the elastic anti-slip spring, and an inclined block is fixedly connected to the rear surface of the elastic anti-slip spring. A retaining arm sliding block is slidably connected to the outer wall of the hook arm through a dovetail block, and an inclined groove is formed on the front end face of the retaining arm sliding block.

[0008] As a further optimization of this utility model, the hook arm inner wall is provided with two arc-shaped locking blocks, which are located on the side of the hook arm inner wall away from the arm-holding sliding block, and the inner side of the arc-shaped locking block has an arc-shaped structure.

[0009] As a further optimization of this utility model, the V-shaped anti-slip teeth are located in the middle of the outer surface of the arc-shaped card block, the vertical cross-section of the V-shaped anti-slip teeth is triangular, and the V-shaped anti-slip teeth are located in front of the elastic anti-slip spring.

[0010] As a further optimization of this utility model, the surface of the elastic anti-slip spring is arc-shaped, the position of the elastic anti-slip spring corresponds one-to-one with the position of the arc-shaped block, each elastic anti-slip spring is provided with multiple anti-slip protrusions, and the anti-slip protrusions are parallel to each other with the elastic anti-slip spring.

[0011] As a further optimization of this utility model, the rear end of the inclined block has an inclined structure, the position of the inclined block corresponds one-to-one with the position of the inclined groove, and the inclined block and the inclined groove slide together.

[0012] As a further optimization of this utility model, the elastic mechanism includes a fixing block, which is fixedly disposed on the other side of the front end face of the fixing seat. A grooved sleeve is fixedly connected to the front end of the fixing block. An adjusting nut is threadedly connected to the outer side of the grooved sleeve. A tension spring is fixedly connected to the front end of the adjusting nut. A two-section guide rod is sleeved on the inner side of the tension spring. The two-section guide rod is slidably connected to the grooved sleeve. The two-section guide rod is fixedly connected to the rear end face of the arm sliding block.

[0013] As a further optimization of this utility model, the rear end face of the mounting plate is fixedly connected to an elastic tension rope, and the number of elastic tension ropes is set to multiple, with a connecting hook fixedly connected to the rear end of each elastic tension rope.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention effectively solves the problems of construction site safety net tensioning devices being difficult to adapt to fence posts of different diameters and prone to shifting by setting up adaptive fixing components and elastic mechanisms. In the adaptive fixing components, the arc-shaped locking block and the elastic anti-slip spring work together to fit tightly to fence posts of different diameters, and the V-shaped anti-slip teeth and anti-slip ridges enhance the fixing stability. In the elastic mechanism, the tension spring and the adjusting nut cooperate to adjust the spring length, maintain the tension performance of the device, ensure that the device is firmly fixed, prevent shifting, achieve precise installation of the safety net, improve installation quality and protection effect, and meet the needs of efficient and precise installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the adaptive fixing component of this utility model;

[0018] Figure 3 This is a schematic diagram of the hook arm of this utility model;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A;

[0020] Figure 5 This is a schematic diagram of the structure of the elastic anti-slip spring of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the sliding block of the arm of this utility model;

[0022] Figure 7 This is an exploded structural diagram of the elastic mechanism of this utility model.

[0023] In the diagram: 1. Mounting plate; 2. Connecting rod;

[0024] 3. Adaptive fixing component; 31. Fixing base; 32. Hook arm; 33. Arc-shaped locking block; 34. V-shaped anti-slip serration; 35. Elastic anti-slip spring; 36. Anti-slip convex strip; 37. Angled block; 38. Arm-mounting sliding block; 39. Angled groove;

[0025] 4. Elastic mechanism; 41. Fixing block; 42. Grooved sleeve; 43. Adjusting nut; 44. Tension spring; 45. Two-stage guide rod;

[0026] 5. Elastic tension rope; 6. Connecting hook. Detailed Implementation

[0027] 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.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Please see Figures 1-7 This utility model provides a technical solution:

[0030] An automatic tensioning device for safety nets used on construction sites includes a mounting plate 1. A connecting rod 2 is fixedly connected to the front end of the mounting plate 1. An adaptive fixing component 3 is fixedly connected to the front end of the connecting rod 2. An elastic mechanism 4 is installed on the outer side of the adaptive fixing component 3. The adaptive fixing component 3 includes a fixing base 31. A hook arm 32 is fixedly connected to one side of the front end face of the fixing base 31. An arc-shaped locking block 33 is fixedly connected to the inner wall of the hook arm 32. A V-shaped anti-slip tooth pattern 34 is fixedly connected to the outer surface of the arc-shaped locking block 33. An elastic anti-slip spring 35 is fixedly connected to the rear end of the arc-shaped locking block 33. An anti-slip convex strip 36 is fixedly connected to the front surface of the elastic anti-slip spring 35. An inclined block 37 is fixedly connected to the rear surface of the elastic anti-slip spring 35. A retaining arm sliding block 38 is slidably connected to the outer wall of the hook arm 32 through a dovetail block. An inclined groove 39 is formed on the front end face of the retaining arm sliding block 38.

[0031] As a further implementation of this solution, two arc-shaped locking blocks 33 are provided on the inner wall of the hook arm 32. The arc-shaped locking blocks 33 are located on the side of the inner wall of the hook arm 32 away from the arm-holding sliding block 38. The inner side of the arc-shaped locking blocks 33 has an arc-shaped structure. V-shaped anti-slip teeth 34 are located in the middle of the outer surface of the arc-shaped locking blocks 33. The vertical cross-section of the V-shaped anti-slip teeth 34 is triangular. The V-shaped anti-slip teeth 34 are located in front of the elastic anti-slip spring 35. The surface of the elastic anti-slip spring 35 has an arc-shaped structure. The positions correspond one-to-one with the positions of the arc-shaped locking blocks 33. Each elastic anti-slip spring 35 is provided with multiple anti-slip protrusions 36. The anti-slip protrusions 36 are parallel to each other and correspond to the positions of the arc-shaped locking blocks 33. The multiple anti-slip protrusions 36 on the surface are parallel to each other. When the subsequent arm sliding block 38 is reset, it can further fit tightly against the fence post and work together with the V-shaped anti-slip teeth 34 to enhance the fixing stability. The arc design allows it to better adapt to the surface curvature of fence posts of different diameters.

[0032] As a further implementation of this solution, the rear end of the inclined block 37 has an inclined structure, and the positions of the inclined blocks 37 and the inclined grooves 39 correspond one-to-one. The inclined blocks 37 and the inclined grooves 39 slide together, and the inclined grooves 39 contact the inclined blocks 37. Utilizing the principle of inclined surfaces, the inclined blocks 37 drive the elastic anti-slip springs 35 to move forward. This design cleverly transforms the linear motion of the arm sliding block 38 into the lateral motion of the elastic anti-slip springs 35, achieving close contact between the anti-slip protrusions 36 and the fence posts, further improving the anti-slip performance of the device, ensuring that the adaptive fixing component 3 is firmly fixed to the fence posts, and preventing movement when the safety net is tensioned.

[0033] As a further implementation of this solution, the elastic mechanism 4 includes a fixed block 41, which is fixedly disposed on the other side of the front end face of the fixed seat 31. A grooved sleeve 42 is fixedly connected to the front end of the fixed block 41. An adjusting nut 43 is threadedly connected to the outer side of the grooved sleeve 42. A tension spring 44 is fixedly connected to the front end of the adjusting nut 43. A two-section guide rod 45 is sleeved on the inner side of the tension spring 44. The two-section guide rod 45 is slidably connected to the grooved sleeve 42. The two-section guide rod 45 is fixedly connected to the rear end face of the arm sliding block 38. During long-term use, if the tension spring 44 becomes loose, the adjusting nut 43 can be rotated to adjust the length of the tension spring 44 by changing the threaded connection position, thereby providing stable elasticity to the arm sliding block 38, maintaining the tension performance of the device, extending its service life, and ensuring that the safety net is always in a suitable tension state.

[0034] As a further implementation of this solution, an elastic tension rope 5 is fixedly connected to the rear end of the installation plate 1. Multiple elastic tension ropes 5 are provided, and a connecting hook 6 is fixedly connected to the rear end of each rope. The elastic tension rope 5 has a certain degree of elasticity, which can buffer the safety net when it is subjected to external impact, reducing damage to the safety net. The connecting hook 6 facilitates connection with the safety net. During tensioning operations, the safety net is tightened by the elastic tension ropes 5, while the self-adaptive fixing component 3 is stably fixed to the fence post, preventing the device from shifting and causing the safety net to tilt, thus achieving precise installation.

[0035] Workflow: When fixing the automatic tensioning device for the safety netting at the construction site using the fence posts, first push the sliding block 38 of the clamping arm backward. At this time, the tension spring 44 is compressed, opening the internal space of the hook arm 32. Align the fence post with the hook arm 32 and embed it inside, so that the fence post contacts the arc-shaped locking block 33. Because the arc-shaped locking block 33 has an arc-shaped structure, when the hook arm 32 rotates relative to the fence post, the arc-shaped locking block 33 can effectively contact fence posts of different diameters, adapting to fence posts of various diameters. At the same time, the V-shaped anti-slip teeth 34 on the arc-shaped locking block 33 contact the surface of the fence post, increasing the friction and initially preventing the device from moving up and down. Then, release the sliding block 38 of the clamping arm. Under the elastic force of the tension spring 44 of the elastic mechanism 4, the sliding block 38 of the clamping arm moves forward and resets. The grooved sleeve 42 slides and connects with the two-section guide rod 45, ensuring the accuracy of the movement process. During the process, the inclined groove 39 on the front end of the sliding block 38 contacts the inclined block 37 at the rear end of the elastic anti-slip spring 35. The elastic anti-slip spring 35 moves forward. The elastic anti-slip spring 35 is an elastic structure. After moving forward, the anti-slip protrusions 36 on its surface make close contact with the fence post, further improving the anti-slip performance. This allows the self-adaptive fixing component 3 to be stably fixed on the fence post, preventing movement during tensioning. The connecting hook 6 is connected to the installation plate 1 through the elastic tension rope 5. The safety net is tensioned by hooking the connecting hook 6. During long-term use, the tension spring 44 may loosen. The adjusting nut 43 can be rotated to change the length of the tension spring 44, thereby providing stable elasticity for the sliding block 38 and ensuring the service life of the device. During the tensioning process, the self-adaptive fixing component 3 can be stably fixed on the fence post, preventing the device from moving and causing the safety net to tilt, thus achieving precise installation.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety fence automatic tensioning device for construction sites, comprising a mounting disc (1), characterized in that: The front end of the mounting plate (1) is fixedly connected to a connecting rod (2), the front end of the connecting rod (2) is fixedly connected to an adaptive fixing component (3), and an elastic mechanism (4) is installed on the outside of the adaptive fixing component (3). The adaptive fixing component (3) includes a fixing seat (31), a hook arm (32) is fixedly connected to one side of the front end face of the fixing seat (31), an arc-shaped locking block (33) is fixedly connected to the inner wall of the hook arm (32), a V-shaped anti-slip tooth pattern (34) is fixedly connected to the outer surface of the arc-shaped locking block (33), an elastic anti-slip spring (35) is fixedly connected to the rear end of the arc-shaped locking block (33), an anti-slip ridge (36) is fixedly connected to the front surface of the elastic anti-slip spring (35), an inclined block (37) is fixedly connected to the rear surface of the elastic anti-slip spring (35), and a retaining arm sliding block (38) is slidably connected to the outer wall of the hook arm (32) through a dovetail block, and an inclined groove (39) is opened on the front end face of the retaining arm sliding block (38).

2. The automatic tensioner for a construction site safety fence according to claim 1, characterized in that: There are two arc-shaped locking blocks (33) provided on the inner wall of the hook arm (32). The arc-shaped locking blocks (33) are located on the side of the inner wall of the hook arm (32) away from the arm sliding block (38). The inner side of the arc-shaped locking blocks (33) has an arc-shaped structure.

3. The automatic tensioner for a construction site safety fence according to claim 1, characterized in that: The V-shaped anti-slip serration (34) is located in the middle of the outer surface of the arc-shaped card block (33). The vertical cross section of the V-shaped anti-slip serration (34) is triangular. The V-shaped anti-slip serration (34) is located in front of the elastic anti-slip spring (35).

4. The automatic tensioner for a construction site safety fence according to claim 1, characterized in that: The surface of the elastic anti-slip spring (35) is arc-shaped. The position of the elastic anti-slip spring (35) corresponds one-to-one with the position of the arc-shaped block (33). Each elastic anti-slip spring (35) is provided with multiple anti-slip protrusions (36). The anti-slip protrusions (36) are parallel to each other with the elastic anti-slip spring (35).

5. The automatic tensioner for a construction site safety fence according to claim 1, characterized in that: The rear end of the inclined block (37) is inclined, and the position of the inclined block (37) corresponds to the position of the inclined groove (39). The inclined block (37) and the inclined groove (39) are in sliding fit.

6. The automatic tensioner for a construction site safety fence according to claim 1, characterized in that: The elastic mechanism (4) includes a fixing block (41), which is fixedly disposed on the other side of the front end face of the fixing seat (31). A grooved sleeve (42) is fixedly connected to the front end of the fixing block (41). An adjusting nut (43) is threadedly connected to the outer side of the grooved sleeve (42). A tension spring (44) is fixedly connected to the front end of the adjusting nut (43). A two-section guide rod (45) is sleeved on the inner side of the tension spring (44). The two-section guide rod (45) is slidably connected to the grooved sleeve (42). The two-section guide rod (45) is fixedly connected to the rear end face of the arm sliding block (38).

7. The automatic tensioner for a construction site safety fence according to claim 1, characterized in that: The rear end face of the mounting plate (1) is fixedly connected to an elastic tension rope (5), and the number of elastic tension ropes (5) is set to multiple, with a connecting hook (6) fixedly connected to the rear end of the elastic tension rope (5).

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