Foundation pit protection system for road and bridge construction

Abstract

The utility model relates to a foundation pit protection system for road and bridge construction. The foundation pit protection system effectively solves the problems that a protection net has no buffering effect and the like. Comprising a one-way wheel, a one-way block and a release block, the one-way wheel is integrally arranged on the lower surface of the rotating rod, the one-way block is arranged on the lower surface of the one-way wheel, and the release block is arranged on the lower surface of the one-way wheel. The one-way blocks are slidably arranged at the bottoms of the mounting columns, and one-way wheels are arranged at the tops of the one-way blocks in a lap joint mode. The protective net designed in the scheme adopts the arrangement that the protective net can be wound around the rotating rod, when impact is generated, the torsion spring is twisted through impact force, the winding length of the two sides of the protective net is released, the protective net has certain buffering capacity, and a one-way wheel is designed for preventing reverse impact force on people from being caused by reset of the torsion spring; and reverse rotation of the one-way wheel can be prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pit protection, and in particular relates to a foundation pit protection system for road and bridge construction. Background Art

[0002] Before the construction of highway bridges, the construction location will be confirmed in advance through measurement, and only then will the subsequent planning drawings and construction of corresponding engineering and construction be carried out. Usually, the construction location is confirmed by digging a pit, that is, digging a foundation pit. Therefore, after the foundation pit is dug, in order to avoid casualties caused by accidental falling into it, it is necessary to establish protective devices outside the construction scope. The general protective devices are mainly guardrails as protective measures. Most of the existing protection systems are protective nets, which are fixedly installed on the edge of the foundation pit. When a person collides with the protective net, it causes a direct collision with the protective net, and there is no certain buffer space, which is easy to cause damage to the impact site. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a road and bridge construction pit protection system. The protection net designed in the road and bridge construction pit protection system adopts a setting that can be wrapped around a rotating rod. When an impact occurs, the impact force causes the torsion spring to twist, releasing the length of the protection net wrapped on both sides, so that the protection net has a certain buffering capacity.

[0004] A road and bridge construction foundation pit protection system comprises a mounting column, a rotatable rotating rod is arranged inside the mounting column, a protective net is overlapped on one side of the rotating rod, a stretching rotating mechanism is arranged at the bottom of the rotating rod, the stretching rotating mechanism comprises a one-way wheel, a one-way block and a release block, the one-way wheel is integrally arranged on the lower surface of the rotating rod, the one-way block is slidably arranged at the bottom of the mounting column, the top of the one-way block is overlapped with the one-way wheel, the release block is slidably arranged at the bottom of the mounting column, the inner side wall of the mounting column is provided with a stretching fixing mechanism, the surface thread of the rotating rod is provided with a lifting release mechanism, and a torsion spring is arranged between the rotating rod and the mounting column.

[0005] The above technical solution has the following beneficial effects:

[0006] The protective net designed in this scheme is configured to be wrapped around a rotating rod. When a collision occurs, the impact force causes the torsion spring to twist, releasing the length of the wrapping on both sides of the protective net, so that the protective net has a certain buffering capacity. In order to prevent the torsion spring from resetting and exerting a reverse impact force on people, a one-way wheel is designed to prevent the one-way wheel from rotating in the opposite direction, thereby protecting people from falling. The extension plate designed in this scheme can be extended under certain conditions to achieve an automatic extension effect, and can be inserted into both sides of the protective net to achieve a fixed effect. This scheme also has a certain reset function and can be used a second time. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the state of the utility model;

[0008] Figure 2 This is a schematic diagram of the cutting of the installation column of the utility model when viewed from above;

[0009] Figure 3 It is a partial cut schematic diagram of the installation column of the utility model;

[0010] Figure 4 This is a schematic diagram of a single-side cut of the installation column of the utility model;

[0011] Figure 5 This is a schematic diagram of cutting the bottom of the installation column of the utility model.

[0012] In the figure: 1. Mounting column; 2. Rotating rod; 3. Protective net; 4. One-way wheel; 5. One-way block; 6. Release block; 7. Torsion spring; 8. Spring No. 1; 9. Spring No. 2; 10. Extension plate; 11. Extension spring; 12. Fixing nail; 13. Fixing groove; 14. Lifting ring; 15. Compression block; 16. Compression spring; 17. Notch; 18. Gap; 19. Storage tank. DETAILED DESCRIPTION

[0013] The above and other technical contents, features and functions of the present invention are described in detail below with reference to the attached Figures 1 to 5 The embodiments are described in detail.

[0014] This embodiment provides a road and bridge construction foundation pit protection system, as shown in the attached Figure 1-5 As shown in the instruction manual, Figure 1 The overall structure diagram of this solution shows that this solution has two mounting columns 1, which are arranged symmetrically on the left and right. Figure 2 For the upward cutting perspective of this solution, the installation column 1 is cut upward. Since the protection net 3 of this solution is long, the middle distance reduction typesetting is adopted. Figure 3 One of the mounting posts 1 was cut from a face-to-face perspective. Figure 4The mounting column 1 is shown separately, and one side of the mounting column 1 is cut. Figure 5 The mounting post 1 is placed upside down, and the lower side of the one-way wheel 4 is cut, so it is placed upside down. You can see the structural diagram at the bottom of the mounting post 1. The following is an introduction to this scheme. The two sides of the protective net 3 of this scheme are overlapped on the rotating rod 2 and wrapped around the rotating rod 2, and a torsion spring 7 is provided on the top of the rotating rod 2, so that the rotating rod 2 can be twisted at an angle, but a certain force is required. Therefore, when a person hits the protective net 3, the protective net 3 has an elastic space, which can buffer the person, so that the person can break through and stretch the length of the protective net 3. Compared with the existing protective net 3 adopts a fixed design, once a person hits the top, there is no certain buffer space, and the contact part of the person is also damaged to a certain extent. Moreover, due to the characteristics of the torsion spring 7, the greater the torsion angle, the greater the force required, and the more difficult it is to stretch. Moreover, this scheme has a one-way wheel 4, which can rotate When the rotating rod 2 rotates, it will not rotate in the opposite direction under the elastic force of the torsion spring 7, preventing the rotating rod 2 from buffering the person when rotating. After the buffering, the torsion spring 7 resets and causes the person to rebound. Therefore, the one-way wheel 4 is integrally arranged under the rotating rod 2, and two slidable one-way blocks 5 are inserted into the two sides of the one-way wheel 4, which does not affect the pulling out of the protective net 3 stored in the storage groove 19. When the torsion spring 7 is twisted, the one-way block 5 will automatically get stuck on the one-way wheel 4 under the action of the No. 1 spring 8 to prevent the torsion spring 7 from twisting. This scheme is also designed with the function of resetting the one-way wheel 4. A release block 6 that can slide upwards is arranged in the middle of the one-way block 5. When the pull-out length of the protective net 3 is limited, the release block 6 can be moved upwards to push the one-way blocks 5 toward both sides to reset the rotating rod 2 (as shown in the attached manual Figure 4 As shown), this solution also has a locking function, but when it reaches a certain length, it will drive the lifting ring 14 to descend, and the lifting ring 14 is threadedly connected to the rotating rod 2 (there is an adapted internal thread on the rotating rod 2). However, when the rotating rod 2 is pulled and rotated by the protective net 3, it will drive the lifting ring 14 to slide downward (a notch 18 is designed on one side of the lifting ring 14 to facilitate the lifting ring 14 to slide downward smoothly). When the lifting ring 14 moves offline to a certain position, it will break away from the extension plate 10 (fixing groove 13), and the extension plate 10 will be released under the elastic force of the extension spring 11 (the extension spring 11 is in the appendix of the instruction manual) Figure 2In the compressed state), it will be inserted into the protective net 3 to lock it (a slidable compression block 15 is designed on one side of the lifting circle 14. The purpose is to facilitate the secondary use of this solution. In the case of external force, the extension plate 10 is controlled to reset, and the lifting circle 14 is reset again. The setting of the compression block 15 is to increase the fault tolerance rate). After reaching a certain stretch, the extension plate 10 is started to extend and fix the protective net 3. This solution can adopt a set of mounting columns 1, or only one mounting column 1 can be set, and the other can be an ordinary column. The mounting column 1 requires bolts or Welded at the edge of the foundation pit, a rotatable rotating rod 2 is arranged inside the mounting column 1, a protective net 3 is overlapped on one side of the rotating rod 2, a stretching rotating mechanism is arranged at the bottom of the rotating rod 2, and the stretching rotating mechanism includes a one-way wheel 4, a one-way block 5 and a release block 6, the one-way wheel 4 is integrally arranged on the lower surface of the rotating rod 2, the one-way block 5 is slidably arranged at the bottom of the mounting column 1, the top of the one-way block 5 is overlapped with the one-way wheel 4, the release block 6 is slidably arranged at the bottom of the mounting column 1, the inner side wall of the mounting column 1 is provided with a stretching fixing mechanism, and the surface thread of the rotating rod 2 is provided with a lifting The lowering release mechanism is provided with a torsion spring 7 between the rotating rod 2 and the mounting column 1, a No. 1 spring 8 is provided between the one-way block 5 and the mounting column 1, a No. 2 spring 9 is provided between the release block 6 and the mounting column 1, the stretching fixing mechanism includes an extension plate 10 and an extension spring 11, the extension plate 10 is slidably arranged inside the mounting column 1, a fixing nail 12 is integrally arranged on one side of the extension plate 10, an extension spring 11 is provided between the extension plate 10 and the mounting column 1, a fixing groove 13 is provided on one side of the extension plate 10, and the lifting and releasing mechanism includes a lifting ring 14, a compression block 15 and a compression spring 16, a compression block 15 can be inserted on the surface of the fixed groove 13, the lifting ring 14 is threadedly connected to the surface of the rotating rod 2, a compression block 15 is slidably provided on one side of the lifting ring 14, a compression spring 16 is provided between the compression block 15 and the lifting ring 14, an internal thread is provided on the surface of the rotating rod 2, a notch 17 is provided on one side of the mounting column 1, a protective net 3 is slidably provided on the surface of the notch 17, a notch 18 is provided on one side of the lifting ring 14, a mounting column 1 is slidably provided on the surface of the notch 18, and a storage groove 19 is provided inside the mounting column 1.

[0015] The above description is only for illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various variations that conform to the concept of the present invention are within the protection scope of the present invention.

Claims

1. A road and bridge construction foundation pit protection system, comprising a mounting column (1), Features: A rotatable rotating rod (2) is arranged inside the mounting column (1), a protective net (3) is overlapped on one side of the rotating rod (2), a stretching rotating mechanism is arranged at the bottom of the rotating rod (2), and the stretching rotating mechanism comprises a one-way wheel (4), a one-way block (5) and a release block (6), the one-way wheel (4) is integrally arranged on the lower surface of the rotating rod (2), the one-way block (5) is slidably arranged at the bottom of the mounting column (1), the top of the one-way block (5) is overlapped with the one-way wheel (4), the release block (6) is slidably arranged at the bottom of the mounting column (1), the inner side wall of the mounting column (1) is provided with a stretching fixing mechanism, the surface thread of the rotating rod (2) is provided with a lifting release mechanism, and a torsion spring (7) is arranged between the rotating rod (2) and the mounting column (1).

2. A road and bridge construction foundation pit protection system according to claim 1, Features: A No. 1 spring (8) is arranged between the one-way block (5) and the mounting column (1), and a No. 2 spring (9) is arranged between the release block (6) and the mounting column (1).

3. A road and bridge construction foundation pit protection system according to claim 1, Features: The stretching and fixing mechanism comprises an extension plate (10) and an extension spring (11); the extension plate (10) is slidably arranged inside the mounting column (1); and a fixing nail (12) is integrally arranged on one side of the extension plate (10).

4. A road and bridge construction foundation pit protection system according to claim 3, Features: An extension spring (11) is arranged between the extension plate (10) and the mounting column (1), and a fixing groove (13) is provided on one side of the extension plate (10).

5. A road and bridge construction foundation pit protection system according to claim 4, Features: The lifting and releasing mechanism comprises a lifting ring (14), a compression block (15) and a compression spring (16); the surface of the fixing groove (13) can be plugged with the compression block (15).

6. A road and bridge construction foundation pit protection system according to claim 5, Features: The lifting ring (14) is threadedly connected to the surface of the rotating rod (2), and a compression block (15) is slidably arranged on one side of the lifting ring (14).

7. A road and bridge construction foundation pit protection system according to claim 5, Features: A compression spring (16) is arranged between the compression block (15) and the lifting ring (14), and an internal thread is provided on the surface of the rotating rod (2).

8. A road and bridge construction foundation pit protection system according to claim 1, Features: A notch (17) is provided on one side of the installation column (1), and a protective net (3) is slidably provided on the surface of the notch (17).

9. A road and bridge construction foundation pit protection system according to claim 5, Features: A notch (18) is provided on one side of the lifting ring (14), and a mounting column (1) is slidably provided on the surface of the notch (18).

10. A road and bridge construction foundation pit protection system according to claim 1, Features: A storage groove (19) is provided inside the installation column (1).

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