Well foot safety device

Abstract

The utility model provides a well foot safety device which comprises a metal net and a plurality of grouting anchor rods, one end of each grouting anchor rod is arranged in the metal net, the number of the grouting anchor rods is four, the four grouting anchor rods are arranged on the periphery of the metal net respectively, each grouting anchor rod comprises a fixing piece and a limiting piece, and the fixing pieces and the limiting pieces are arranged on the periphery of the metal net. The limiting piece is arranged at one end of the fixing piece, the top of the limiting piece is arranged in the metal net, a square rod is fixedly installed at one end of the fixing piece, and a square groove is formed in one end of the limiting piece. According to the well foot safety device, the metal net is made of the steel bars and fixed through the grouting anchor rods, compared with traditional matched installation of hemp ropes and expansion bolts for protection, the bearing capacity and stability of the safety net are greatly enhanced, objects are effectively prevented from falling off to hit personnel and equipment at the well bottom, and the safety of the well foot safety device is improved. And the safety of personnel and equipment is fully guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mining engineering, and in particular to a wellhead safety device. Background Technology

[0002] In the field of mining engineering, vertical shafts and inclined shafts, as key infrastructure, bear the heavy responsibility of personnel going up and down the mine, equipment transportation, and material transportation. They are the core channels to ensure the smooth operation of mining operations. Vertical shafts, with their vertical structure, provide efficient vertical passage for personnel and materials; while inclined shafts, with their inclined layout, meet specific transportation needs and add more flexibility to mining operations.

[0003] In these wells, safety accidents such as personnel and equipment falling into the well, and falling rocks causing objects to be struck occur frequently. Currently, ordinary hemp ropes are used with expansion bolts as a safety measure for fixing. However, hemp ropes are obviously insufficient in terms of stability and durability, and can no longer meet the requirements of the current safety situation. The expansion bolts used for fixing need to be driven in manually at height, which is not only difficult to operate, but also very easy to fall off, further increasing the safety hazards at the foot of the well and making it difficult to ensure safe production.

[0004] Therefore, it is necessary to provide a wellbore safety device to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a well foot safety device that solves the problem that existing well foot protection measures have poor stability and insufficient durability of hemp ropes, which pose safety hazards.

[0006] To solve the above-mentioned technical problems, this utility model provides a well foot safety device, comprising:

[0007] The metal mesh and multiple grouting anchors, with one end of each of the multiple grouting anchors located inside the metal mesh.

[0008] Preferably, four grouting anchors are provided, and the four grouting anchors are respectively provided around the metal mesh.

[0009] Preferably, the grouting anchor includes a fixing member and a limiting member. The limiting member is disposed at one end of the fixing member, and the top of the limiting member is disposed inside the metal mesh. A square rod is fixedly installed at one end of the fixing member, and a square groove is opened at one end of the limiting member. The square rod is slidably connected inside the square groove.

[0010] Preferably, the limiting member is internally rotatably connected to a first threaded rod, one end of which is threaded to the inside of the square rod.

[0011] Preferably, a handle is fixedly installed at the other end of the first screw.

[0012] Preferably, the wellhead safety device further includes a second threaded rod, a nut, and a pressure plate. The second threaded rod is disposed on the top of the grouting anchor rod, the nut is threadedly connected to the outer side of the second threaded rod, and the pressure plate is disposed on the outer side of the grouting anchor rod.

[0013] Preferably, the bottom of the pressure plate abuts against the top of the metal mesh, and the bottom of the nut abuts against the top of the pressure plate.

[0014] Compared with related technologies, the well foot safety device provided by this utility model has the following beneficial effects:

[0015] This utility model provides a well foot safety device, which uses steel bars to make a metal mesh and fixes it with grouting anchor rods. Compared with the traditional installation of hemp rope and expansion bolts, it greatly enhances the load-bearing capacity and stability of the safety net, effectively prevents objects from falling and hitting personnel and equipment at the bottom of the well, and fully protects the safety of personnel and equipment. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a first embodiment of a well foot safety device provided by this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the grouting anchor bolt of this utility model;

[0018] Figure 3 A schematic diagram of the structure of a second embodiment of a well foot safety device provided by this utility model;

[0019] Figure 4 for Figure 3 The enlarged schematic diagram of part A is shown.

[0020] The following are the labels in the diagram: 1. Metal mesh, 2. Grouting anchor, 21. Fixing rod, 22. Limiting component, 23. Square rod, 24. Square groove, 25. First threaded rod, 26. Rotary handle, 3. Second screw, 31. Nut, 32. Pressure plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] First Embodiment

[0023] Please refer to the following: Figure 1 ,in, Figure 1 This is a schematic diagram of the structure of a first embodiment of a well foot safety device provided by this utility model. The well foot safety device includes: a metal mesh 1 and a plurality of grouting anchor rods 2, one end of each of the plurality of grouting anchor rods 2 being disposed inside the metal mesh 1.

[0024] Four grouting anchors 2 are provided, and the four grouting anchors 2 are respectively arranged around the metal mesh 1.

[0025] The grouting anchor 2 includes a fixing member 21 and a limiting member 22. The limiting member 22 is disposed at one end of the fixing member 21, and the top of the limiting member 22 is disposed inside the metal mesh 1. A square rod 23 is fixedly installed at one end of the fixing member 21, and a square groove 24 is opened at one end of the limiting member 22. The square rod 23 is slidably connected inside the square groove 24.

[0026] The limiting member 22 is rotatably connected to a first threaded rod 25, one end of which is threaded to the inside of the square rod 23.

[0027] A handle 26 is fixedly installed at the other end of the first screw 25.

[0028] Metal mesh 1 uses steel bars with a diameter of 6.0mm as the material for the safety net. The steel bars are tied securely using the figure-eight method. Grouting anchor rods 2 are used around the well foot as a safety net fixing measure to reinforce the steel mesh and improve its load-bearing capacity and stability.

[0029] The size of the metal mesh 1 can be adjusted according to the diameter of various wells, making it flexible and reliable;

[0030] After the fixing rod 21 is installed at the well foot, the metal mesh 1 is placed on top of the limiting member 22. Then, the user rotates the handle 26, which drives the first threaded rod 25 to rotate inside the limiting member 22. This causes one end of the first threaded rod 25 to be threaded inside the square rod 23, thereby causing the square rod 23 to slide towards the inner side of the square groove 24. This causes one side of the limiting member 22 to abut against the inner side of the metal mesh 1, increasing the stability of the installation of the metal mesh 1.

[0031] The square groove 24 and the square rod 23 are adapted to each other, allowing the square rod 23 to slide on the inner side of the square groove 24.

[0032] The working principle of the well foot safety device provided by this utility model is as follows:

[0033] When in use, the grouting anchor 2 is installed at the well foot, and then the metal mesh 1 is placed on the outer side of the grouting anchor 2, thereby serving to install the metal mesh 1.

[0034] Compared with related technologies, the well foot safety device provided by this utility model has the following beneficial effects:

[0035] By using steel bars to make a metal mesh 1 and fixing it with grouting anchor rods 2, compared with the traditional installation of hemp rope and expansion bolts, the load-bearing capacity and stability of the safety net are greatly enhanced, effectively preventing objects from falling and hitting personnel and equipment at the bottom of the well, and fully ensuring the safety of personnel and equipment.

[0036] Second Embodiment

[0037] Please refer to the following: Figure 2 and Figure 3 Based on the wellhead safety device provided in the first embodiment of this application, the second embodiment of this application proposes another wellhead safety device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0038] Specifically, the difference in the well foot safety device provided in the second embodiment of this application is that the well foot safety device further includes a second screw 3, a nut 31 and a pressure plate 32. The second screw 3 is disposed on the top of the grouting anchor 2, the nut 31 is threadedly connected to the outer side of the second screw 3, and the pressure plate 32 is disposed on the outer side of the grouting anchor 2.

[0039] The bottom of the pressure plate 32 abuts against the top of the metal mesh 1, and the bottom of the nut 31 abuts against the top of the pressure plate 32.

[0040] The working principle of the well foot safety device provided by this utility model is as follows:

[0041] When using it, first install the grouting anchor 2 at the well foot position, then place the metal mesh 1 on top of the grouting anchor 2, and let the top of the grouting anchor 2 pass through the metal mesh. Then, pass the pressure plate 32 through the second screw 3, and let the bottom of the pressure plate 32 press against the top of the metal mesh 1. Then, thread the nut 31 to the outer side of the second screw 3, and let the bottom of the nut 31 abut against the top of the pressure plate 32, thereby limiting the pressure plate 32.

[0042] Compared with related technologies, the well foot safety device provided by this utility model has the following beneficial effects:

[0043] The second screw 3, nut 31 and pressure plate 32 work together to ensure that the bottom of the pressure plate 32 abuts against the top of the metal mesh 1 during use, and the nut 31 and the second screw 3 are threaded together so that the bottom of the nut 31 abuts against the top of the pressure plate 32. This helps to limit the position of the metal mesh 1 and increase the stability of the installation of the metal mesh 1.

[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A wellhead safety device, characterized in that, include: The device comprises a metal mesh and multiple grouting anchors, with one end of each grouting anchor located inside the metal mesh. Each grouting anchor includes a fixing member and a limiting member. The limiting member is located at one end of the fixing member, and its top is located inside the metal mesh. A square rod is fixedly installed at one end of the fixing member, and a square groove is formed at one end of the limiting member. The square rod is slidably connected inside the square groove.

2. The wellhead safety device according to claim 1, characterized in that, Four grouting anchors are provided, and the four grouting anchors are respectively arranged around the metal mesh.

3. A wellhead safety device according to claim 1, characterized in that, The limiting member is internally rotatably connected to a first threaded rod, one end of which is threaded into the interior of the square rod.

4. A well foot safety device according to claim 3, characterized in that, A handle is fixedly installed at the other end of the first threaded rod.

5. A wellhead safety device according to claim 1, characterized in that, It also includes a second screw, a nut, and a pressure plate. The second screw is disposed on the top of the grouting anchor rod, the nut is threaded to the outer side of the second screw rod, and the pressure plate is disposed on the outer side of the grouting anchor rod.

6. A wellhead safety device according to claim 5, characterized in that, The bottom of the pressure plate abuts against the top of the metal mesh, and the bottom of the nut abuts against the top of the pressure plate.

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