CN116479994A - A construction method of glass fiber reinforced plastic septic tank - Google Patents

Abstract

The application discloses a construction method of a glass fiber reinforced plastic septic tank, which relates to the field of sewage disposal facility construction technology and comprises the following steps: excavating foundation pit earthwork; constructing a concrete base, and pre-burying a rope penetrating piece on the concrete base; when the glass fiber reinforced plastic septic tank is hoisted by using a hoisting machine, a traction rope is tied up in the glass fiber reinforced plastic septic tank, the traction rope sags and extends, one end of the traction rope, which is far away from the glass fiber reinforced plastic septic tank, passes through a rope penetrating piece, is wound by using a winding device, and the winding device is positioned at the outer side of a pit mouth of a foundation pit by using a positioning piece; the winding device comprises a winding frame, a winding wheel and a driving mechanism, wherein the driving mechanism comprises a driving piece and a worm and gear transmission assembly, and the driving piece drives the winding wheel to rotate through the worm and gear transmission assembly. The suspension swing of the glass fiber reinforced plastic septic tank in the hoisting process can be restrained by utilizing the traction rope, so that the condition that the suspension swing affects the construction efficiency of the glass fiber reinforced plastic septic tank in the hoisting process of the glass fiber reinforced plastic septic tank can be reduced.

Description

A construction method of glass fiber reinforced plastic septic tank

technical field

The present application relates to the field of sewage facility construction technology, in particular to a construction method of a glass fiber reinforced plastic septic tank.

Background technique

FRP septic tank refers to the equipment specially used to treat domestic sewage, which is made of synthetic resin as the matrix and glass fiber reinforced material. The fiberglass septic tank is light in weight, high in strength, and corrosion-resistant. Compared with the conventional concrete structure septic tank, the fiberglass septic tank is a prefabricated structure, which is convenient for construction, and the waiting time in the construction process is less, and the construction efficiency is high.

FRP septic tanks are usually buried underground to reduce the space occupied by the septic tank on the ground. During the construction of the FRP septic tank, it is necessary to excavate the foundation pit in advance, and after the concrete base and foundation are constructed in the foundation pit, the FRP septic tank is hoisted into the inside of the foundation pit by hoisting equipment.

During the process of hoisting the FRP septic tank, the operator of the hoisting machine usually needs to repeatedly adjust the position of the FRP septic tank, so that the FRP septic tank can be more accurately landed on the predetermined position in the foundation pit, and try to avoid the situation that the FRP septic tank collides with the side wall of the foundation pit; however, during this process, the FRP septic tank in the suspended state is prone to hanging swings, and due to the weight of the FRP septic tank and the consideration of operational safety, artificial suppression of the FRP septic tank is usually not recommended. However, due to the hanging swing during the hoisting process of the FRP septic tank, the position control during the hoisting process of the FRP septic tank, and the anti-collision work between the FRP septic tank and the inner wall of the foundation pit are greatly hindered, so that the hoisting efficiency of the FRP septic tank is greatly affected.

Contents of the invention

In order to reduce the influence of hanging swing on the construction efficiency of the FRP septic tank during the hoisting process of the FRP septic tank, the application provides a construction method for the FRP septic tank.

The construction method of a kind of FRP septic tank provided by the application adopts the following technical scheme:

A construction method for a glass-steel septic tank, comprising the steps of:

foundation pit excavation;

Concrete base construction, pre-buried on the concrete base to install rope-through parts;

When hoisting FRP septic tanks, when using hoisting equipment to hoist FRP septic tanks, a traction rope is tied to the FRP septic tank, the traction rope extends downwards, and the end of the traction rope away from the FRP septic tank passes through the rope-threading piece. the reel rotates;

After the FRP septic tank is hoisted to the concrete base, remove the spreader and traction rope.

By adopting the above technical scheme, the FRP septic tank is gradually hoisted from top to bottom into the foundation pit by using hoisting equipment. When the FRP septic tank is hoisted downwards, the winding device gradually winds up the traction rope connected to the FRP septic tank at the same time, so that the traction rope is in a tight state. The relative position of the FRP septic tank is beneficial to improve the hoisting efficiency of the FRP septic tank.

The end of the traction rope far away from the FRP septic tank passes through the rope fitting and is connected to the rewinding device. The rewinding device for rewinding the traction rope is placed outside the foundation pit, which is conducive to ensuring the safety of the operator of the rewinding device. The driving part of the rewinding device drives the reel to rewind the traction rope through the worm gear transmission assembly. The worm gear assembly has a self-locking function.

Optionally, the traction rope includes a first high-strength section, a second high-strength section and a low-strength protection section, the tensile strengths of the first high-strength section and the second high-strength section are higher than that of the low-strength protection section, one end of the low-strength protection section is connected to one end of the first high-strength section, the other end of the low-strength protection section is connected to one end of the second high-strength section, the first high-strength section is used to bind the FRP septic tank, and the second high-strength section is used for winding by the winding device.

By adopting the above technical solution, the strength of the first high-strength section and the second high-strength section of the traction rope is greater than that of the low-strength protection section. When the traction rope is subjected to excessive tension, the low-strength protection section of the traction rope is relatively easy to break, so as to reduce the failure of the rewinding device due to excessive load due to excessive traction rope tension, and try to avoid the excessive traction rope tension. In actual work, the pulling force of the traction rope may suddenly increase sharply. For example, the operator of the hoisting machine suddenly lifts the FRP septic tank upward due to improper operation without releasing the traction rope by the winding device.

Optionally, two ends of the low-strength protection section are provided with hooks respectively, and both the first high-strength section and the second high-strength section are provided with hooking rings for connecting with the hooks.

By adopting the above technical scheme, the two ends of the low-strength protection section are respectively hooked to the hooking rings of the first high-strength section and the hooking rings of the second high-strength section through hooks, so that the low-strength protection section is respectively connected to the first high-strength section and the second high-strength section. When the low-strength protection section breaks during use, a new low-strength protection section can be replaced in time.

Optionally, the positioning member is an anchor rod, and the number of the anchor rods is set to be multiple, and the winding frame is provided with a plurality of positioning holes corresponding to the anchor rods.

By adopting the above-mentioned technical scheme, the winding device is positioned outside the pit opening of the foundation pit through the bolt. When the winding device winds up the traction rope, the traction rope generates force along the horizontal direction on the bolt through the winding device, and the bolt is limited by the soil, so that the bolt can form a good positioning effect on the winding device.

Optionally, the rope threading member includes a pulley and a pulley seat, the pulley seat is pre-embedded and fixed on the concrete base, the upper surface of the concrete base is provided with an accommodation groove for accommodating the pulley, and the apex of the pulley is lower than the notch plane of the accommodation groove.

By adopting the above technical solution, the rope-threading member realizes the reversing effect on the traction rope through the pulley, which is beneficial to reduce the resistance in the process of rewinding the traction rope by the winding device. The rope-threading piece is hidden in the accommodation groove on the upper surface of the concrete base to avoid collision between the rope-threading piece and the FRP septic tank.

Optionally, an installation marking area is provided on the upper surface of the concrete base, and the rope threading member is arranged at the center of the installation marking area of the concrete base.

By adopting the above-mentioned technical solution, the rope-threading part is arranged in the installation mark area, and when the rope segment between the FRP septic tank and the rope-threading part remains vertical, the position of the FRP septic tank in the horizontal plane can be kept stable during its downward lifting process, making it easy to control the position of the FRP septic tank in the foundation pit.

Optionally, before hoisting the FRP septic tank with the hoisting machine, hang a plumb line at the end of the boom of the hoisting machine.

Although the suspension swing of the FRP septic tank can be suppressed under the tensioned state of the traction rope, the tensioned state of the traction rope may be in a vertical state or in an inclined state. When the traction rope needs to be adjusted from an inclined state to a vertical state, the position of the FRP septic tank needs to be adjusted.

Optionally, the plumb part of the plumb line is fixedly provided with a first magnet, and the upward central part of the FRP septic tank is detachably provided with a second magnet when the FRP septic tank is hoisted.

By adopting the above technical solution, a magnetic attraction is formed between the first magnet of the plumb part and the second magnet on the upper surface of the FRP septic tank, and the plumb part is not easy to swing under the constraint of the magnetic attraction, so that the staff can use the plumb line as a reference to judge the verticality of the traction rope.

Optionally, before the FRP septic tank is hoisted, guide devices are set around the foundation pit;

The guide device includes two base frames and two guide frames. The two guide frames are arranged corresponding to the two base frames. The two base frames are used to be placed on both sides of the foundation pit. The guide frames are hinged to the corresponding base frames. As for the guide frame, the other end of the elastic stretching member is connected to the base frame.

By adopting the above technical solution, when the FRP septic tank enters between the two guide frames of the guide device, the two guide frames of the guide device form a vertical guiding effect on the FRP septic tank; when the FRP septic tank is hoisted to a height close to the foundation pit and the traction rope breaks, the FRP septic tank is prone to large swings due to the sudden break of the traction rope. The two guide frames are always kept parallel, which can reduce the impact force between the two guide frames during the swing of the FRP septic tank. Furthermore, because the two guide frames of the guide device are bound by elastic stretching parts, when the FRP septic tank drives the two guide frames to swing, the two elastic stretching parts are repeatedly and alternately subjected to the action of the stretching seat, which is conducive to forming a buffering effect on the reciprocating swing of the FRP septic tank.

Optionally, guide rods are respectively provided on opposite sides of the two guide frames, and the guide rods of the two guide frames are parallel to each other, and the lower ends of the guide rods are used to extend into the inner side of the foundation pit.

By adopting the above technical solution, when the FRP septic tank enters the inner side of the foundation pit, the guide frame plays a guiding role for the FRP septic tank through the guide rod. Usually, the diameter of the FRP septic tank is smaller than the width of the foundation pit. When the guide rod extends into the inner side of the foundation pit, the guide rod has a swing space.

In summary, the present application includes at least one of the following beneficial technical effects:

1. When the FRP septic tank is hoisted downward, the winding device gradually rewinds the traction rope connected to the FRP septic tank at the same time, and the suspension swing of the FRP septic tank is suppressed, which helps to keep the position of the FRP septic tank stable, so that the staff can control the relative position between the FRP septic tank and the foundation pit, which is conducive to improving the hoisting efficiency of the FRP septic tank.

2. The strength of the first high-strength section and the second high-strength section of the traction rope is greater than that of the low-strength protection section. When the traction rope is subjected to excessive tension, the low-strength protection section of the traction rope is relatively easy to break, so as to reduce the failure of the rewinding device due to excessive load due to excessive traction rope tension, and try to avoid excessive traction rope tension.

Description of drawings

Fig. 1 is the flow diagram of the construction method of the FRP septic tank of embodiment 1.

Fig. 2 is a schematic diagram showing the hoisting state of the FRP septic tank in Embodiment 1.

Fig. 3 is a partially enlarged view of A in Fig. 2 .

Fig. 4 is a schematic diagram showing the positional relationship between the FRP septic tank and the foundation pit in the hoisting state of Embodiment 1.

Fig. 5 is a partially enlarged view at B in Fig. 4 .

Fig. 6 is a partially enlarged view at point C in Fig. 4 .

Fig. 7 is a schematic diagram showing the hoisting state of the FRP septic tank in Embodiment 2.

Fig. 8 is a schematic structural view of the guiding device of the second embodiment.

Explanation of reference signs:

1. Traction rope; 11. First high-strength section; 12. Second high-strength section; 13. Low-strength protection section; 14. Hook; 15. Hook ring; 2. Rewinding device; 21. Rewinding stand; , plumb line; 51, plumb piece; 511, first magnet; 512, second magnet; 6, guide device; 61, foundation frame; 62, guide frame; 63, articulated rod; 631, double-ended screw rod; 632, base rod;

Detailed ways

The present application will be described in further detail below in conjunction with accompanying drawings 1-8.

Example 1

The embodiment of the application discloses a construction method of a glass fiber reinforced plastic septic tank. Referring to Figure 1-3, the construction method of the FRP septic tank includes the following steps:

Step 1: Excavation of 20 earthworks in the foundation pit;

Step 2: Construction of the concrete base 30. After the concrete base 30 is concreted, an installation marking area is set on the upper surface of the concrete base 30 by painting lines or placing markers; during the construction process of the concrete base 30, a rope threading part 4 is pre-buried, and the rope threading part 4 is arranged at the center of the installation marking area of the concrete base 30;

Step 3: hoisting the FRP septic tank 10;

When the FRP septic tank 10 is hoisted by the hoisting equipment, a plumb line 5 is set at the end of the boom of the hoisting equipment, and the traction rope 1 is bound to the FRP septic tank 10, and the traction rope 1 extends downward.

Step 4: After the FRP septic tank 10 is hoisted to the concrete base 30, remove the spreader, the traction rope 1 and the guide device 6; after the FRP septic tank 10 is hoisted in place, adjust the levelness of the FRP septic tank 10 to meet the requirements of the engineering design drawing, fill the concrete block to fix the septic tank body, and pour concrete next to the pipe after stabilization;

Step 5: backfill the foundation pit 20 layer by layer;

Step 6: Build connecting wells and inspection wells;

Step 7: On-site preliminary acceptance.

The FRP septic tank 10 is hoisted to the inner side of the foundation pit 20 by hoisting equipment. During the process of hoisting the FRP septic tank 10, as the FRP septic tank 10 goes down, the winding device 2 is continuously used to rewind the traction rope 1 . It is beneficial to improve the hoisting efficiency of the FRP septic tank 10 .

On the premise that the rope threading member 4 is located at the center of the installation mark area, when the FRP septic tank 10 is hoisted, by keeping the traction rope 1 in a vertical state between the rope threading member 4 and the FRP septic tank 10, the FRP septic tank 10 can be landed in the installation mark area of the concrete base 30 as accurately as possible.

Referring to Fig. 4 and Fig. 5, the end of the plumb line 5 has a plumb piece 51, and the plumb piece 51 is embedded with a first magnet 511. When the FRP septic tank 10 is hoisted, a second magnet 512 is detachably arranged in the upward central part. The plumb part 51 is constrained by the magnetic attraction force between the first magnet 511 and the second magnet 512, so that the hanging swing of the plumb part 51 is restrained, and the state of the plumb line 5 is kept stable.

4 and 6, the traction rope 1 comprises a first high-strength section 11, a second high-strength section 12 and a low-strength protection section 13, the tensile strength of the first high-strength section 11 and the second high-strength section 12 are higher than the low-strength protection section 13, the two ends of the low-strength protection section 13 are respectively provided with hooks 14, and the first high-strength section 11 and the second high-strength section 12 are all provided with hooking rings 15 for hook 14 connection. One end of the low-strength protection section 13 is connected to one end of the first high-strength section 11, and the other end of the low-strength protection section 13 is connected to one end of the second high-strength section 12. The first high-strength section 11 is used to bind the FRP septic tank 10, and the second high-strength section 12 is used for winding by the winding device 2.

When the traction rope 1 is subjected to excessive tension, the low-strength protection section 13 of the traction rope 1 is relatively easy to break, so as to reduce the failure of the rewinding device 2 due to excessive load due to the excessive tension of the traction rope 1, and try to avoid the excessive tension of the traction rope 1. Drive the rewinding device 2 to break away from the positioning of the positioning member 3, and hit the situation that injures the staff. The low-strength protection section 13 forms a detachable connection with the first high-strength section 11 and the second high-strength section 12 respectively, which is convenient for replacement of the low-strength protection section 13 after it breaks.

Referring to Fig. 4, the rope-threading part 4 includes a pulley 41 and a pulley seat 42, the traction rope 1 is connected with the pulley 41 around, the pulley 41 is connected with the pulley seat 42 in rotation, the pulley seat 42 is pre-embedded and fixed on the concrete base 30, the upper surface of the concrete base 30 is provided with an accommodation groove 301 for accommodating the pulley 41, and the apex of the pulley 41 is lower than the notch plane of the accommodation groove 301.

Referring to Fig. 3, the winding device 2 used in the construction method of the FRP septic tank includes a winding frame 21, a reel 22 and a drive mechanism 23, the winding frame 21 is provided with a plurality of positioning holes 211 corresponding to the anchor rods, and the winding frame 21 is positioned outside the pit mouth of the foundation pit 20 through a plurality of anchor rods; 3 are respectively connected to the winding rack 21 in rotation, the winding wheel 22 is coaxially fixedly connected to the worm wheel 232, and the worm 233 and the worm wheel 232 are engaged with each other; the driving member is a rocking handle 234, and the rocking handle 234 is fixedly arranged on one end of the worm 233, and the rocking handle 234 drives the winding wheel 22 to rotate and rewind the traction rope 1 through the worm gear 232 worm drive assembly.

The worm gear 232 worm drive assembly has a self-locking function. As the FRP septic tank 10 gradually descends, the reel 22 continues to wind the traction rope 1. Under the self-locking action of the worm gear 232 worm drive assembly, it is difficult for the FRP septic tank 10 to force the reel 22 to unwind by swinging, thereby keeping the traction rope 1 in a tight state.

The implementation principle of a construction method for a FRP septic tank in the embodiment of the present application is as follows: the FRP septic tank 10 is gradually lifted from top to bottom into the foundation pit 20 by hoisting equipment. When the FRP septic tank 10 is hoisted downward, the winding device 2 gradually winds up the traction rope 1 connected to the FRP septic tank 10 at the same time. The relative position between the septic tank 10 and the foundation pit 20 is conducive to improving the hoisting efficiency of the FRP septic tank 10 .

Example 2

The difference between this embodiment and Embodiment 1 is that in step 3 of this embodiment, before hoisting the FRP septic tank 10 , the guide device 6 is provided around the foundation pit 20 .

Referring to Fig. 7 and Fig. 8, the guiding device 6 includes two basic frames 61 and two guiding frames 62, the two guiding frames 62 are arranged corresponding to the two basic frames 61 respectively, and the two basic frames 61 are used to be placed on both sides of the foundation pit 20, and the basic frames 61 can be positioned by passing through anchor rods or by pressing with heavy objects. The guide frame 62 is hinged with the corresponding base frame 61, and the two guide frames 62 are oppositely arranged. The opposite sides of the two guide frames 62 are used to abut against the outer peripheral surface of the FRP septic tank 10, and the two guide frames 62 are parallel to each other; two hinge rods 63 are jointly connected between the two guide frames 62, and the two hinge rods 63 are oppositely arranged and parallel to each other. One end of the elastic stretcher 64 is connected to the guide frame 62, and the other end of the elastic stretcher 64 is connected to the base frame 61.

Referring to FIG. 8 , the opposite sides of the two guide frames 62 are provided with guide rods 65 respectively. The guide rods 65 are used to abut against the outer peripheral surface of the FRP septic tank 10 and are located between the guide rods 65 of the two guide frames 62 and are parallel to each other. The lower ends of the guide rods 65 are used to extend into the inside of the foundation pit 20.

When the FRP septic tank 10 entered between the two guide frames 62 of the guide device 6, the two guide frames 62 of the guide device 6 formed a vertical guiding effect on the FRP septic tank 10; The member 64 is repeatedly and alternately stretched, which is beneficial to form a buffering effect on the reciprocating swing of the FRP septic tank 10, and can restore the FRP septic tank 10 to a stable state as much as possible.

With reference to Fig. 8, hinge rod 63 comprises double-ended screw rod 631 and two base rods 632, and the helical direction of the two ends of double-ended screw rod 631 is opposite, and the two ends of double-ended screw rod 631 are threadedly connected with two base rods 632 respectively, and two base rods 632 all screw holes, and the internal screw thread of two base rods 632 rotates in opposite direction, and two base rods 632 are correspondingly arranged with two guide frames 62 respectively, and base rod 632 is away from one end of double-ended screw rod 631 and corresponding guide frame 6 2 hinged. By screwing the double-ended screw 631, the length of the hinge rod 63 can be adjusted, so that the distance between the two guide frames 62 can be adjusted according to actual needs, so as to adapt to the FRP septic tanks 10 of different specifications.

All of the above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims (10)

1. A construction method for a fiberglass septic tank, characterized in that, comprises the steps: Foundation pit (20) earthwork excavation; Concrete base (30) construction, pre-buried on the concrete base (30) to set the threading piece (4); When hoisting the FRP septic tank (10), use the hoisting equipment to hoist the FRP septic tank (10), bind the traction rope (1) to the FRP septic tank (10), the traction rope (1) hangs down and extend, the end of the traction rope (1) far away from the FRP septic tank (10) passes through the rope piece (4), the traction rope (1) is wound up by the winding device (2), and the winding device (2) is positioned in the pit of the foundation pit (20) through the positioning piece (3) Outside the mouth; the winding device (2) includes a winding frame (21), a winding wheel (22) and a driving mechanism (23), and the driving mechanism (23) includes a driving member and a worm gear assembly, and the driving member drives the winding wheel (22) to rotate through the worm gear assembly; After the fiberglass septic tank (10) is hoisted to the concrete base (30), remove the spreader and the traction rope (1). 2. The construction method of a FRP septic tank according to claim 1, characterized in that: the traction rope (1) includes a first high-strength section (11), a second high-strength section (12) and a low-strength protection section (13), the tensile strength of the first high-strength section (11) and the second high-strength section (12) are higher than the low-strength protection section (13), one end of the low-strength protection section (13) is connected to one end of the first high-strength section (11), and the low-strength protection section The other end of (13) is connected to one end of the second high-strength section (12), the first high-strength section (11) is used to bind the FRP septic tank (10), and the second high-strength section (12) is used for winding by the winding device (2). 3. The construction method of a FRP septic tank according to claim 2, characterized in that: the two ends of the low-strength protection section (13) are respectively provided with hooks (14), and the first high-strength section (11) and the second high-strength section (12) are both provided with hooking rings (15) for connecting the hooks (14). 4. The construction method of a glass fiber reinforced plastic septic tank according to claim 1, characterized in that: the positioning member (3) is an anchor rod, and the number of anchor rods is set to be multiple, and the winding rack (21) is provided with a plurality of positioning holes (211) corresponding to the anchor rods. 5. The construction method of a FRP septic tank according to claim 1, characterized in that: the rope threading member (4) includes a pulley (41) and a pulley seat (42), the pulley seat (42) is pre-embedded and fixed on the concrete base (30), the upper surface of the concrete base (30) is provided with an accommodation groove (301) for accommodating the pulley (41), and the apex of the pulley (41) is lower than the notch plane of the accommodation groove (301). 6. The construction method of a glass reinforced plastic septic tank according to claim 1, characterized in that: the upper surface of the concrete base (30) is provided with an installation marking area, and the rope threading member (4) is set at the center of the installation marking area of the concrete base (30). 7. The construction method of a FRP septic tank according to claim 1, characterized in that: before the FRP septic tank (10) is hoisted by the hoisting machine, a plumb line (5) is suspended at the end of the boom of the hoisting machine. 8. The construction method of a FRP septic tank according to claim 7, characterized in that: the plumb part (51) of the plumb line (5) is fixed with a first magnet (511), and the upward central part of the FRP septic tank (10) is detachably provided with a second magnet (512). 2) A magnetic attraction is formed between them. 9. The construction method of a FRP septic tank according to claim 1, characterized in that before the FRP septic tank (10) is hoisted, a guide device (6) is provided around the foundation pit (20); The guide device (6) includes two base frames (61) and two guide frames (62), the two guide frames (62) are set corresponding to the two base frames (61), the two base frames (61) are used to be placed on both sides of the foundation pit (20), the guide frames (62) are hinged to the corresponding base frames (61), the two guide frames (62) are arranged oppositely, and the opposite sides of the two guide frames (62) are used to abut against the outer surface of the FRP septic tank (10) On the peripheral surface, the two guide frames (62) are parallel to each other; the two guide frames (62) are jointly connected with a hinge rod (63), and the sides of the two guide frames (62) facing away from each other are respectively provided with elastic stretching members (64), one end of the elastic stretching member (64) is connected to the guide frame (62), and the other end of the elastic stretching member (64) is connected to the basic frame (61). 10. The construction method of a FRP septic tank according to claim 9, characterized in that: guide rods (65) are respectively provided on the opposite sides of the two guide frames (62), and the guide rods (65) of the two guide frames (62) are parallel to each other, and the lower ends of the guide rods (65) are used to extend into the inside of the foundation pit (20).