PCB board drilling platform structure and construction method thereof

Abstract

The embodiment of the application provides a PCB drilling house platform structure and a construction method, the platform structure comprises: a foundation soil layer at the bottom; a three-dimensional anti-static grounding net installed on the foundation soil layer, the three-dimensional anti-static grounding net comprises grounding feet inserted into the foundation soil layer and connecting columns extending upwards; a first stone powder layer laid on the upper surface of the foundation soil layer; a shock-absorbing material layer laid on the upper surface of the first stone powder layer; a second stone powder layer laid on the upper surface of the shock-absorbing material layer; a first concrete layer cast on the upper surface of the second stone powder layer; a second concrete layer cast on the upper surface of the first concrete layer, the thickness and strength of the second concrete layer are greater than those of the first concrete layer, and a double-layer bidirectional steel reinforcement framework is embedded in the second concrete layer; and a ground bearing layer laid on the second concrete layer, the top end of the connecting column extends above the ground bearing layer. The embodiment can prevent vibration and static electricity from interfering with the equipment in the PCB drilling house.

Description

TECHNICAL FIELD

[0001] The embodiment of the application relates to the technical field of PCB drilling house construction, in particular to a PCB drilling house ground platform structure and a construction method thereof. BACKGROUND

[0002] In order to realize batch PCB drilling, PCB manufacturers usually set up a PCB drilling house to accommodate multiple drilling machines simultaneously for drilling. Since the drilling machines generate great vibration during operation, the vibration of the drilling machines will adversely affect the surrounding drilling auxiliary equipment and other drilling machines, resulting in poor drilling precision of the drilling machines and low product quality. In addition, the drilling machines and the surrounding drilling auxiliary equipment are usually sensitive to static electricity. Excessive static electricity will affect the normal operation of the drilling machines and the drilling auxiliary equipment, and may even cause production safety accidents. Therefore, the PCB drilling house is required to have good shock absorption and anti-static effects.

[0003] The ground platform structure for assembling the drilling machines and the drilling auxiliary equipment in the traditional PCB drilling house is usually formed by pouring concrete with a thickness of 400 mm and a strength of C25 on the foundation of the drilling house. However, the above ground platform structure is too simple and cannot effectively absorb the vibration of the drilling machines during operation. In order to prevent the interference of static electricity on the drilling machines, the existing PCB drilling house is usually provided with a special anti-static device. However, the cost of the special anti-static device is relatively high, and the anti-static effect is relatively poor for a large number of drilling machines and drilling auxiliary equipment in the drilling house. SUMMARY

[0004] The technical problem to be solved by the embodiment of the application is to provide a PCB drilling house ground platform structure that can effectively prevent the interference of vibration and static electricity on the equipment in the PCB drilling house.

[0005] The further technical problem to be solved by the embodiment of the application is to provide a construction method of a PCB drilling house ground platform structure that can effectively construct a ground platform structure capable of preventing the interference of vibration and static electricity on the equipment in the PCB drilling house.

[0006] In order to solve the above technical problems, the embodiment of the application first provides the following technical solution: a PCB drilling house ground platform structure, comprising:

[0007] a foundation soil layer located at the bottom;

[0008] a three-dimensional anti-static grounding net installed on the foundation soil layer, the three-dimensional anti-static grounding net having grounding feet inserted into the foundation soil layer as a whole and wiring columns extending upward;

[0009] a first stone powder layer laid on the upper surface of the foundation soil layer;

[0010] a shock-absorbing material layer laid on the upper surface of the first stone powder layer;

[0011] a second stone powder layer laid on the upper surface of the shock-absorbing material layer;

[0012] a first concrete layer cast on the upper surface of the second stone powder layer;

[0013] a second concrete layer cast on the upper surface of the first concrete layer, the thickness and strength of the second concrete layer being greater than those of the first concrete layer respectively, and a double-layered and double-directional steel reinforcement frame being embedded in the second concrete layer; and

[0014] a ground bearing layer laid on the second concrete layer, the top end of the grounding post extending above the ground bearing layer.

[0015] Further, the shock-absorbing material layer is formed by laying a plurality of pebbles with a particle size of 20-40mm.

[0016] Further, the first concrete layer is made of concrete with a strength of C10.

[0017] Further, the second concrete layer is made of concrete with a strength of C25.

[0018] Further, the ground bearing layer comprises a mortar leveling layer cast on the second concrete layer and a marble plate laid on the mortar leveling layer.

[0019] Further, the thicknesses of the first stone powder layer, the shock-absorbing material layer, the second stone powder layer, the first concrete layer, the second concrete layer and the ground bearing layer are 50mm, 200mm, 50mm, 100mm, 400mm and 70mm respectively.

[0020] Further, the double-layered and double-directional steel reinforcement frame is built by steel bars with a diameter of 14mm at a spacing of 250mm.

[0021] Further, the three-dimensional anti-static grounding net further comprises a grounding grid connecting the top ends of all the grounding feet into a net shape, and the grounding post is arranged upwardly from the grounding net.

[0022] Further, the grounding feet are made of galvanized angle steel, the grounding grid is laid by galvanized flat steel in a crisscross manner, and the grounding resistance of the grounding post is less than or equal to 1Ω.

[0023] On the other hand, in order to solve the above further technical problem, the embodiment of the present application further provides the following technical scheme: a construction method of the PCB board drilling house foundation platform structure according to any one of the above, comprising the following steps:

[0024] paving the foundation soil layer to a thickness less than a design elevation;

[0025] installing a three-dimensional anti-static grounding net on the foundation soil layer, and inserting grounding feet into the foundation soil layer;

[0026] continuing to pave the foundation soil layer to reach the design elevation, and layer-wise tamping during the paving of the foundation soil layer;

[0027] paving a first stone powder layer on the foundation soil layer, and tamping the first stone powder layer;

[0028] paving a shock-absorbing material layer on the first stone powder layer, and tamping the shock-absorbing material layer;

[0029] paving a second stone powder layer on the shock-absorbing material layer, and tamping the second stone powder layer;

[0030] pouring a first concrete layer on the second stone powder layer;

[0031] installing a double-layer bidirectional steel reinforcement frame on the first concrete layer, and pouring a second concrete layer on the first concrete layer, the thickness of the second concrete layer being greater than that of the first concrete layer, the double-layer bidirectional steel reinforcement frame being embedded in the second concrete layer as a whole, and the first concrete layer and the second concrete layer being made of different raw materials so that the strength of the second concrete layer is greater than that of the first concrete layer; and

[0032] paving a ground bearing layer on the second concrete layer, and extending the top end of a wiring column of the three-dimensional anti-static grounding net above the ground bearing layer.

[0033] After the technical scheme is applied, the PCB drilling house foundation structure embodiment of the present application has at least the following beneficial effects: the PCB drilling house foundation structure of the present application comprises, in sequence, a foundation soil layer, a three-dimensional anti-static grounding net, a first stone powder layer, a shock-absorbing material layer, a second stone powder layer, a first concrete layer, a second concrete layer, and a ground bearing layer, the shock-absorbing material layer is used to realize shock absorption of the drilling machine during operation, the thickness and strength of the second concrete layer are greater than those of the first concrete layer, and the double-layer bidirectional steel reinforcement frame is embedded in the second concrete layer, which effectively improves the anti-shock and shock-absorbing properties of the PCB drilling house; in addition, the wiring column of the three-dimensional anti-static grounding net is extended above the ground bearing layer, which provides a static grounding point for the drilling machine in the PCB drilling house, thereby effectively eliminating the interference of static electricity on the equipment in the PCB drilling house. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a cross-sectional view of an optional embodiment of the PCB drilling house foundation structure of the present application.

[0035] Figure 2 Figure 3 is a schematic diagram of a three-dimensional anti-static grounding net for an optional embodiment of the PCB drill house platform structure of the present application.

[0036] Figure 3 Figure 4 is a flow chart of a construction method for an optional embodiment of the PCB drill house platform structure of the present application. DETAILED DESCRIPTION

[0037] The present application will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present application and are not intended to limit the present application, and the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0038] As shown in Figure 1, an optional embodiment of the present application provides a PCB drill house platform structure, comprising: Figure 1 a foundation soil layer 1 located at the bottom;

[0039] a three-dimensional anti-static grounding net 2 installed on the foundation soil layer 1, the three-dimensional anti-static grounding net 2 having grounding feet 22 inserted into the foundation soil layer 1 and wire posts 20 extending upward;

[0040] a first stone powder layer 3 laid on the upper surface of the foundation soil layer 1;

[0041] a shock-absorbing material layer 4 laid on the upper surface of the first stone powder layer 3;

[0042] a second stone powder layer 5 laid on the upper surface of the shock-absorbing material layer 4;

[0043] a first concrete layer 6 cast on the upper surface of the second stone powder layer 5;

[0044] a second concrete layer 7 cast on the upper surface of the first concrete layer 6, the second concrete layer 7 having a thickness and strength greater than those of the first concrete layer 6, and the second concrete layer 7 further having a double-layered and double-directional steel reinforcement frame embedded therein; and

[0045] a ground bearing layer 8 laid on the second concrete layer 7, the wire posts 10 extending above the ground bearing layer 8.

[0046]

[0047] ​The PCB drilling room platform structure of this invention includes a foundation soil layer 1, a three-dimensional anti-static grounding mesh 2, a first stone powder layer 3, a shock-absorbing material layer 4, a second stone powder layer 5, a first concrete layer 6, a second concrete layer 7, and a ground bearing layer 8, which are stacked sequentially. The shock-absorbing material layer 4 reduces vibration during the drilling process. Since the thickness and strength of the second concrete layer 7 are greater than those of the first concrete layer 6, and a double-layer bidirectional steel reinforcement skeleton is embedded in the second concrete layer 7, the seismic resistance and vibration reduction of the PCB drilling room can be effectively improved. In addition, by extending the terminal 20 of the three-dimensional anti-static grounding mesh 2 above the ground bearing layer 8, an electrostatic grounding point can be provided for the drilling rig in the PCB drilling room, thereby effectively eliminating the interference of static electricity on the equipment in the PCB drilling room.

[0048] In an optional embodiment of the present invention, the damping material layer 4 is formed by laying a plurality of pebbles with a particle size of 20-40mm. In this embodiment, the use of pebbles with a particle size of 20-40mm to form the damping material layer 4 can effectively reduce vibration during the operation of the drilling equipment.

[0049] In an optional embodiment of the present invention, the first concrete layer 6 is made of C10 concrete. In this embodiment, the first concrete layer 6 formed by using concrete of the above-mentioned strength can effectively improve the structural strength of the platform and has good seismic resistance and vibration reduction effects.

[0050] In an optional embodiment of the present invention, the second concrete layer 7 is made of C25 concrete. In this embodiment, the second concrete layer 7 formed by using concrete of the above-mentioned strength can effectively improve the structural strength of the platform and has good seismic resistance and vibration reduction effects.

[0051] In an optional embodiment of the present invention, the ground bearing layer 8 includes a mortar leveling layer 80 poured onto the second concrete layer 7 and a marble slab 82 laid on the mortar leveling layer 80. In this embodiment, the ground bearing layer 8 is constructed using the above-described structural form. The mortar leveling layer 80 can not only level the second concrete layer 7 but also effectively bond and fix the marble slab 82; moreover, the structural strength is relatively strong, which can effectively support the relevant equipment in the PCB board drilling room.

[0052] In an optional embodiment of the present invention, the thicknesses of the first stone powder layer 3, the shock-absorbing material layer 4, the second stone powder layer 5, the first concrete layer 6, the second concrete layer 7, and the ground bearing layer 8 are 50mm, 200mm, 50mm, 100mm, 400mm, and 70mm, respectively. In this embodiment, using the above thickness parameters sequentially to form the platform structure can effectively ensure the seismic resistance and shock absorption effect of the platform. In specific implementation, the thickness of the mortar leveling layer 80 in the ground bearing layer 8 is 50mm, and the thickness of the marble slab 82 is 20mm.

[0053] In an optional embodiment of the present invention, the double-layer bidirectional steel reinforcement cage is constructed using steel bars with a diameter of 14mm at a spacing of 250mm. In this embodiment, using the above parameters to construct the double-layer bidirectional steel reinforcement cage effectively enhances the structural strength of the second concrete layer 7 and improves the seismic resistance and damping effect of the platform. Specifically, based on experimental data, the platform structure using the second concrete layer 7 in this embodiment can bear a load of 6-10 T / m. 2 .

[0054] In an optional embodiment of the present invention, such as Figure 2 As shown, the three-dimensional anti-static grounding mesh 2 also includes a grounding grid 24 that connects the tops of all the grounding feet 22 into a mesh, and the terminal block 20 extends upward from the grounding grid 24. In this embodiment, the three-dimensional anti-static grounding mesh 2 adopts the above-described structural form to create a vertical three-dimensional mesh, which has a relatively simple structure, is relatively convenient to produce and manufacture, and can effectively guide static electricity to the ground. In specific implementation, the length of each grounding foot 22 can be 2 meters; the length and width of each grid of the grounding grid 24 can be 3 meters.

[0055] In an optional embodiment of the present invention, the grounding foot 22 is made of galvanized angle steel, the grounding grid 24 is made of galvanized flat steel laid in a crisscross pattern, and the grounding resistance of the terminal block 20 is less than or equal to 1Ω. In this embodiment, the three-dimensional anti-static grounding grid 2 is made using the above-mentioned materials. In addition, designing the grounding resistance of the terminal block 20 to be within the above-mentioned resistance value range can effectively ensure that the terminal block 20 can conduct static electricity to the ground and eliminate the interference of static electricity on the drilling rig.

[0056] On the other hand, such as Figure 3 As shown, this embodiment of the invention further provides a construction method for the PCB board drilling room platform structure described in the above embodiments, including the following steps:

[0057] S1: Lay a foundation soil layer with a thickness less than the design elevation;

[0058] S2: Install a three-dimensional anti-static grounding net 2 on the foundation soil layer 1, so that the grounding foot 22 is inserted into the foundation soil layer 1;

[0059] S3: Continue laying the foundation soil layer 1 until the thickness of the foundation soil layer 1 reaches the design elevation. During the laying of the foundation soil layer 1, it is necessary to compact it in layers.

[0060] S4: Lay the first stone powder layer 3 on the foundation soil layer 1 that has reached the design elevation, and flatten and compact the first stone powder layer 3.

[0061] S5: Lay a shock-absorbing material layer 4 on the first stone powder layer 3, and flatten and compact the shock-absorbing material layer 4;

[0062] S6: Lay a second stone powder layer 5 on the shock-absorbing material layer 4, and flatten and compact the second stone powder layer 5.

[0063] S7: Pour the first concrete layer 6 on the second stone powder layer 5;

[0064] S8: Install a double-layer bidirectional steel reinforcement cage on the first concrete layer 6, and then pour a second concrete layer 7 on the first concrete layer 6. The thickness of the second concrete layer 7 is greater than the thickness of the first concrete layer 6. The double-layer bidirectional steel reinforcement cage is integrally embedded inside the second concrete layer 7. The first concrete layer 6 and the second concrete layer 7 are made of different raw materials so that the strength of the second concrete layer 7 is greater than the strength of the first concrete layer 6; and

[0065] S9: Lay a ground bearing layer 8 on the second concrete layer 7 and make the top of the terminal post 20 of the three-dimensional anti-static grounding network 2 extend above the ground bearing layer 8.

[0066] This embodiment, through the above construction method, can effectively construct a platform structure to prevent vibration and static electricity from interfering with the equipment inside the PCB drilling room.

[0067] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present invention.

Claims

1. A PCB board drill floor structure, characterized by, The platform structure comprises: a foundation soil layer at the bottom; a three-dimensional anti-static grounding net installed on the foundation soil layer, the three-dimensional anti-static grounding net having grounding feet inserted into the foundation soil layer and connection posts extending upward, the three-dimensional anti-static grounding net further comprising a grounding grid connecting the top ends of all the grounding feet into a network, the connection posts extending upward from the grounding grid; a first stone powder layer laid on the top surface of the foundation soil layer; a shock-absorbing material layer laid on the top surface of the first stone powder layer, the shock-absorbing material layer being formed by laying a plurality of pebbles with a particle size of 20-40 mm; a second stone powder layer laid on the top surface of the shock-absorbing material layer; a first concrete layer cast on the top surface of the second stone powder layer; a second concrete layer cast on the top surface of the first concrete layer, the second concrete layer having a thickness and strength greater than those of the first concrete layer, and the second concrete layer having a double-layer double-direction steel reinforcement embedded therein; and a ground bearing layer laid on the second concrete layer, the top ends of the connection posts extending above the ground bearing layer.

2. The PCB board drill floor structure of claim 1, wherein, The first concrete layer is made of concrete with a strength of C10.

3. The PCB board drill floor structure of claim 2, wherein, The second concrete layer is made of concrete with a strength of C25.

4. The PCB board drill floor structure of claim 1, wherein, The ground bearing layer comprises a mortar leveling layer cast on the second concrete layer and a marble slab laid on the mortar leveling layer.

5. The PCB drill floor structure of any of claims 1 to 4, wherein, The thicknesses of the first stone powder layer, the shock-absorbing material layer, the second stone powder layer, the first concrete layer, the second concrete layer and the ground bearing layer are 50 mm, 200 mm, 50 mm, 100 mm, 400 mm and 70 mm, respectively.

6. The PCB board drill floor structure of claim 1, wherein, The double-layer double-direction steel reinforcement is built by steel bars with a diameter of 14 mm at a spacing of 250 mm.

7. The PCB board drill floor structure of claim 1, wherein, The grounding feet are made of galvanized angle steel, the grounding grid is made of galvanized flat steel laid in a crisscross manner, and the grounding resistance of the connection posts is less than or equal to 1 Ω.

8. A method for constructing a PCB drill floor structure according to any one of claims 1 to 7, characterised in that, The method comprises the following steps: laying the foundation soil layer with a thickness less than the design elevation; installing the three-dimensional anti-static grounding net on the foundation soil layer so that the grounding feet are inserted into the foundation soil layer; continuing to lay the foundation soil layer so that the thickness of the foundation soil layer reaches the design elevation, and the foundation soil layer needs to be tamped layer by layer during the laying process; laying the first stone powder layer on the foundation soil layer that has reached the design elevation, and tamping the first stone powder layer; laying the shock-absorbing material layer on the first stone powder layer, and tamping the shock-absorbing material layer; laying the second stone powder layer on the shock-absorbing material layer, and tamping the second stone powder layer; casting the first concrete layer on the second stone powder layer; installing the double-layer double-direction steel reinforcement on the first concrete layer, and then casting the second concrete layer on the first concrete layer, the thickness of the second concrete layer being greater than that of the first concrete layer, the double-layer double-direction steel reinforcement being embedded in the second concrete layer, and the first concrete layer and the second concrete layer being made of different raw materials so that the strength of the second concrete layer is greater than that of the first concrete layer; and A ground bearing layer is laid on the second concrete layer and the top end of the connection post of the three-dimensional anti-static grounding net is extended above the ground bearing layer.

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