CN104452804B - Wall telephone is made in tunneling boring stirring cutting - Google Patents

Abstract

The invention discloses a full-section mixing and cutting wall building machine, which is mainly composed of a crawler crane, a pulley block, a chain turning device and a grouting pipe. The slurry pipe is arranged on the rectangular chain support, and the four corners of the rectangular chain support are provided with sprockets. The two sides and the bottom of the rectangular chain support are distributed with a plurality of guide wheels, and the chain is arranged on the sprockets and guide wheels. The interval between the cutters is distributed on the surface of the chain. The crawler crane drives the rectangular chain support to move up and down, and the motor drives the sprockets at the two corners of the upper end to rotate. The sprockets drive the chain, and the chain drives the cutter. A plurality of anti-knife fall-off mechanisms are distributed on the chain at intervals. The invention has the characteristics of simple structure, low cost, easy operation, high efficiency, adaptability to the change of formation rock surface, and wider application range.

Description

Full-section mixing and cutting wall building machine

technical field

The invention relates to civil engineering construction equipment, in particular to a full-section mixing and cutting wall building machine.

Background technique

In today's civil engineering construction process, it often involves the construction of underground buildings (structures) such as basements and subways. According to the geological conditions during construction, the foundation pit support body should be constructed first. In areas with rich groundwater, weak soil layers or areas without precipitation conditions, the basement pit support body must also have the function of retaining water and intercepting water. The water intercepting methods mainly include reinforced concrete underground diaphragm walls and lapped cement-soil mixing pile walls. Or high-pressure rotary (pendulum) spray wall, etc.

Cement-soil mixing piles are widely used because of their low cost. Initially, they consisted of Ø550@400 overlapping single piles, and now they have developed single piles with large diameters of Ø800-1200, and three-axis or even five-axis mixing pile machines. The frame height of these traditional deep mixing pile machines is limited, relying on overlapping to form a cut-off wall, and the mixing head of the mixing pile is located at the bottom end and can only mix locally. The biggest disadvantage is that the depth of the wall has reached the limit of 35 meters, and the wall The lower part is easy to split, the upper and lower strength is uneven, and the strength is very low when encountering soft soil layers, which greatly affects the soil retaining and water interception effects.

On April 20, 2011, the State Intellectual Property Office published the patent document whose publication number is CN102021920A, and the patent name is the continuous wall-forming machine for underground cement-soil anti-seepage wall. This underground cement-soil anti-seepage wall continuous wall-forming machine, mechanical chassis and hydraulic The support constitutes a walking movement mechanism, the frame and the tilt adjustment rod are installed on the mechanical chassis, the frame is vertical or tilted through the tilt adjustment rod, the vertical guide rod and the horizontal drive cylinder are installed on the frame, the tool drive mechanism is combined with the tool combination box and the tool combination The chain and the tool head are connected, and move up and down along the vertical guide rod through the vertical drive cylinder, and the tool combination chain that surrounds both sides of the tool combination box moves around between the tool drive mechanism and the tool head, and is fixed on the tool combination chain The blade realizes the cutting and mixing of the soil layer, and the cutter head is equipped with a cutter guide wheel, a cement nozzle and a vertical sensor. The non-"fence" anti-seepage wall with excellent anti-seepage effect can be really manufactured by this machine. This kind of continuous anti-seepage wall has uniform texture, precise direction, better anti-seepage effect, and simple process. It can dig down and cut the soil layer , Cement and soil to build the wall in one go.

The above-mentioned patent mainly improves the crawler crane, but this patent mainly improves the chain support, the distribution of the sprockets and the installation of the chain, and there is a substantial difference between the two.

Contents of the invention

The object of the present invention is to overcome the deficiencies in the prior art and provide a full-section mixing and cutting wall building machine with low cost, easy operation and high construction efficiency.

To achieve the above object, the technical solution adopted in the present invention is:

Full-section mixing and cutting wall building machine, which is mainly composed of crawler crane, pulley block, chain slewing device and grouting pipe. Set on the rectangular chain support, the lower end of the grouting pipe is connected with more than two grouting branch pipes, and the grouting branch pipes are connected with the grouting ports on the two side walls of the rectangular chain support. There are sprockets at the four corners, and a plurality of guide wheels are distributed on both sides and the bottom of the rectangular chain support. The chain is arranged on the sprockets and guide wheels. The crane is connected to the pulley block through the sling, the pulley block is connected to the upper end of the rectangular chain support, the crawler crane drives the rectangular chain support to move up and down, the motor drives the sprocket to rotate, the sprocket drives the chain, the chain drives the cutter, and the cutter continuously cuts and stirs the rock Soil section.

Described motor is provided with two, and two motors are arranged on the both sides of rectangular chain support, and are respectively connected with two chain wheels of upper end in the rectangular chain support. The installation method of the two motors can keep the center of gravity of the rectangular chain bracket, which is conducive to maintaining the vertical verticality. The two motors enable the sprocket to rotate in the forward and reverse directions, thereby realizing the forward and reverse movement of the chain.

The motor is a hydraulic motor.

The rectangular chain support is formed by butting a top section, a plurality of middle sections and a bottom section.

A chain tension adjustment mechanism is provided between the top section and the intermediate section adjacent to the top section. The chain tension adjustment mechanism is composed of a hydraulic jack, a spring, a slide bar and a chute, and the chute is located adjacent to the top section. On the intermediate section, the hydraulic jack and the spring are arranged between the top section and the adjacent intermediate section.

The adjacent intermediate sections and between the intermediate sections and the bottom section are connected by bolts.

An inclinometer for detecting the inclination of the rectangular chain support is installed on the rectangular chain support.

The rectangular chain bracket and the two sides of the chain are provided with an anti-running device, the anti-running device is composed of a plastic slide plate and a steel baffle, and the bottom of the steel baffle is connected to the rectangular chain bracket by bolts , the side is close to both sides of the chain; the plastic slide plate is arranged between the chain and the steel baffle, and is arranged on the steel baffle through bolts. When the tool is under too much force during cutting, the chain is blocked in the groove formed by the guide wheel and the anti-movement device, which effectively prevents the chain from moving.

Beneficial effects of the present invention:

One, a full-section mixing and cutting wall-building machine provided by the present invention, the chain rotates along the edge of the rectangular chain support, drives the cutter to continuously cut and mix the rock and soil layer, and realizes full-section cutting/stirring, which is better than the deep layer mixing pile machine The vertical rotation mixing and local mixing efficiency of the machine is high, the depth is deeper, the thickness of the wall is uniform and thin, the wall strength is uniform, the continuity is good, the water interception performance is further improved, and the production is simple, which is more in line with the needs of today's high-speed construction.

Second, the chain support of the present invention can be spliced and extended to reach deeper rock-soil layers to deal with rock-soil layers of different origins and to meet wider construction requirements. The splicable structure can also realize the segmental production of the bracket, reducing the difficulty in production, use, transportation and storage.

Third, the double sprocket design at the bottom is cheaper than the traditional design of a large wheel, and the square bottom makes the bottom of the wall overlap better. At the same time, the application of the guide wheel makes the pressure of the chain and the soil layer increase when the cutter is cutting, and the chain and the guide wheel can still maintain a small friction and rotate normally.

Fourth, the present invention has simple structure, mature accessories and low cost; it is easy to operate, high in efficiency, can adapt to changes in stratum rock surfaces, and has a wider application range; thin walls save cement, and achieve material saving and environmental protection. The invention can better adapt to the needs of today's high-speed construction, and has high popularization and application value.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of rectangular chain support shown in Fig. 1;

Fig. 3 is a structural schematic diagram of the chain shown in Fig. 1;

FIG. 4 is an enlarged view of point A shown in FIG. 3 .

In the figure: 1. Crawler crane; 2. Pulley block; 3. Rectangular chain bracket; 4. Chain; 5. Tool; 6. Motor; 7. Sprocket; 8. Guide wheel; 11. Middle section; 12. Bottom section; 13. Hydraulic jack; 14. Spring; 15. Slide bar; 16. Chute; 17. Inclinometer; 18. Grouting pipe; 19. Plastic skateboard; 20. Steel block plate; 21 grouting port; 22, grouting branch pipe; 23, segmental connecting bolts.

detailed description

As shown in Figures 1 and 2, the full-section mixing and cutting wall building machine is mainly composed of a crawler crane 1, a pulley block 2, a chain slewing device and a grouting pipe 18. The chain slewing device is mainly composed of a rectangular chain support 3 and a chain 4. , a plurality of cutters 5, and a motor 6, the grouting pipe 18 is arranged on the rectangular chain support 3, and the lower end of the grouting pipe 18 is connected with two grouting branch pipes 22, and the grouting branch pipe 22 is connected to the The grouting port 21 on the two side walls of the rectangular chain support 3 communicates. The cement slurry is discharged through the grouting port 21. The four corners of described rectangular chain support 3 are provided with sprocket wheel 7, and the both sides of rectangular chain support 3 and the bottom are distributed with a plurality of guide wheels 8, and described chain 4 is arranged on described sprocket wheel 7 and guide wheel 8, The plurality of cutters 5 are distributed on the surface of the chain 4 at intervals. The crawler crane 1 is connected to the pulley block 2 through the suspension rope 9. The pulley block 2 is connected to the upper end of the rectangular chain support 3. The crawler crane 1 drives the rectangular chain support 3 to move up and down. The motor 6 drives the sprocket 7 to rotate, the sprocket 7 drives the chain 4, the chain 4 drives the cutting tool 5, and the cutting tool 5 continuously cuts and stirs the rock and soil section. The movement of the slewing chain is controlled in the cab of the crawler crane, and the slewing chain can be controlled to adapt to the undulation of the formation rock surface.

Described motor 6 is provided with two, and two motors 6 are located at the both sides of rectangular chain support 3, and are respectively connected with two sprockets of upper end in rectangular chain support 3, to drive two sprockets of upper end in rectangular chain support 3. The sprocket 7 rotates. The installation mode of two motors 6 can keep the center of gravity of the rectangular chain support, which is conducive to maintaining the vertical verticality. The motor 6 is a hydraulic motor.

The rectangular chain support 3 is formed by butting a top section 10 , a plurality of middle sections 11 and a bottom section 12 . The length of the top section 10 is 2-3 meters, the length of each middle section 11 is 3-10 meters, and the length of the bottom section 12 is 3-6 meters. A chain tightness adjustment mechanism is provided between the top section 10 and the intermediate section 11 adjacent to the top section. The chain tension adjustment mechanism is composed of a hydraulic jack 13, a spring 14, a slide bar 15 and a chute 16. The chute 16 Set on the middle section 11 adjacent to the top section, one end of the slide bar 15 is connected with the top section 10, and the other end is arranged in the chute 16, and the hydraulic jack 13 and the spring 14 are arranged on the Between the adjacent middle section 11 and the top section 10 . The two ends of all the intermediate sections 11 and one end of the bottom section 12 have bolt butt joint holes, the adjacent intermediate sections are connected by bolts 23, and the intermediate sections and the bottom sections are connected by bolts 23.

An inclinometer 17 for detecting the inclination of the rectangular chain support is installed on the rectangular chain support 3 .

As shown in Figures 3 and 4, on the rectangular chain bracket 3 and on both sides of the chain 4, anti-movement devices are provided. The bottom of the quality baffle 20 is connected with the rectangular chain bracket 3 by bolts, and the sides are close to both sides of the chain 4; . When the tool 5 is under too much force in cutting, the chain 4 is blocked in the groove formed by the guide wheel and the anti-movement device, effectively preventing the chain 4 from moving.

Concrete construction method of the present invention, comprises the following steps:

S1. Select the tool type according to the soil quality of the rock and soil layer measured on site; determine the width of the tool and the number of links of the chain support according to the depth required by the design plan;

S2. Assemble the full-section mixing and cutting wall building machine with the top section, the middle section (with chute) adjacent to the top section and the bottom section;

S3. The assembled full-section mixing and cutting wall building machine is first used to excavate the pit body where the standard section is placed. Near the corner of the planned wall, select an appropriate location to dig a pit and place a standard section (middle section). The size of the pit body can just be put into an iron box with standard sections placed vertically. Described suitable position, under the situation of not hindering work, allows crane to reach with suspension hook as far as possible at the beginning and end of every section wall. After the pit body is completed, put it into the iron box, and put the delivered standard section into the box, and the standard section is restrained by the box body to keep it upright;

S4. Drill down vertically at the designated starting position of the constructed guide wall until the bottom section sinks into the soil layer, stop the rotation and drill down, and then insert a cross bar at the top and clamp it on the guide wall to prevent the support from sinking. Then loosen the connection between the middle section and the bottom section, disconnect the grouting pipe and the chain, and the boom of the crane will bring the top section and the middle section adjacent to the top section to the top of the pit body, connect with the standard section in the pit, and then hoist Come back and splice the standard section with the bottom section. And connect the grouting pipe and chain, adjust the chain tightness; slightly lift, remove the cross bar, and continue drilling. After the standard joints are also lowered to the ground, repeat the above steps of adding standard joints until the size of the chain support meets the design requirements for the first time, and the full-section mixing and cutting wall building machine is installed;

S5. The length of the chain support is drilled down to the design depth, and the lateral movement and cutting are started, and the soil is stirred back and forth. At the same time, cement slurry is injected and mixed with the soil to form a continuous cement-soil wall. After the cement soil gradually hardens, it can achieve the required function. During the cutting and mixing process, bentonite can be injected from the grouting pipe to make the soil fluid and workable. Or after each grouting, clean the pipeline with bentonite or clean water according to the situation. During the cutting process, according to the cutting effect and the inclination reflected by the inclinometer, the crane controls the cutting speed of the rotary chain through the pulley block and adjusts to restore verticality.

S6. After a section of straight wall is completed, it is necessary to disassemble the standard section of the chain bracket section by section. The method is to reverse the installation process, and clean all the parts of the pipeline and the rotary chain with clean water during the disassembly process. The crane controls the rotary chain consisting of the top section, the intermediate section adjacent to the top section and the bottom section to repeat S4 and S5 to start another straight wall until all wall sections are completed. Thus, in the embodiment of the present invention, it can be seen from the assembly process of the full-section mixing and cutting wall-building machine that the structure of the wall-building device is simple, the accessories are mature, and the installation steps are few; The wall is built in section, and the strength is uniform; the continuous movement makes the wall smooth and the water interception performance is better; the brackets can be spliced to deal with different depths. And the three sides of the frame are cut and stirred at the same time to achieve high-efficiency work. Such a device has a relatively large improvement effect and a relatively high application value, and will be very popular and widely used.

The above description is only a preferred embodiment of the present invention, and of course it cannot be used to limit the scope of rights of the present invention. It should be pointed out that for those of ordinary skill in the art, any modification or equivalent replacement of the technical solutions of the present invention will Do not depart from the scope of protection of the technical solution of the present invention.

Claims (4)

1. null1. wall telephone is made in a tunneling boring stirring cutting，It is characterized in that: it is mainly by crawler crane、Assembly pulley、Chain slewing gear and Grouting Pipe are constituted，Described chain slewing gear is mainly by rectangle chain stay、Chain、Multiple cutters、Motor is constituted，Described Grouting Pipe is located on rectangle chain stay，The lower end of described Grouting Pipe connects two or more slip casting branched pipe，Described slip casting branched pipe connects with the grouting port on rectangle chain stay two side，It is provided with sprocket wheel at the corner of described rectangle chain stay，The both sides of rectangle chain stay and bottom are distributed multiple directive wheel，Described chain is located on described sprocket wheel and directive wheel，The plurality of cutter is distributed in the surface of chain，Crawler crane is connected with assembly pulley by lifting rope，Assembly pulley is connected with the upper end of rectangle chain stay，Crawler crane drives rectangle chain stay to move up and down，Described motor band movable sprocket rotates，Sprocket wheel drives chain，Chain-driving cutter，Cutter continuous cutting and stirring ground section；Described motor is provided with two, and two motors are located at the both sides of rectangle chain stay, and couple with two sprocket wheels of upper end in rectangle chain stay respectively；Described motor uses hydraulic motor；Described rectangle chain stay is to be docked by epimerite, multiple middle node and coxopodite to form；It is provided with chain elasticity adjusting mechanism between described epimerite and the middle node adjacent with epimerite, described chain elasticity adjusting mechanism is made up of hydraulic jack, spring and slide bar and chute, chute is located on the middle node adjacent with epimerite, and described hydraulic jack and described spring are located between epimerite and adjacent middle node.
2. Wall telephone is made in tunneling boring the most according to claim 1 stirring cutting, it is characterised in that: it is bolted between described adjacent middle node and between middle node and coxopodite.
3. Wall telephone is made in tunneling boring the most according to claim 1 and 2 stirring cutting, it is characterised in that: it is provided with to detect the dipmeter of rectangle chain stay gradient on described rectangle chain stay.
4. Wall telephone is made in tunneling boring the most according to claim 1 stirring cutting, it is characterized in that: on described rectangle chain stay and be positioned at the both sides of chain and be provided with the anti-device that walks, the described anti-device that walks is made up of with steel baffle plate plastic slide, the bottom of described steel baffle plate and rectangle chain stay are by bolt-connection, and side approaches chain both sides；Described plastic slide is located between chain and steel baffle plate, is located on steel baffle plate by bolt.