Quantitative concrete grouting machine for shield construction

Abstract

The invention discloses a concrete quantitative grouting machine for shield construction, and relates to the technical field of grouting machines, the concrete quantitative grouting machine for shield construction comprises a mounting frame, a plurality of mixing drums are mounted in the mounting frame, a plurality of feed ports are formed in the upper ends of the mixing drums, a mounting hole is formed in an upper round cover, and the upper round cover is connected with the mounting frame. A stirring assembly is mounted on the mounting hole, a lower round cover is mounted at the lower end of the stirring barrel, a discharging port is formed in the lower round cover, raw materials are injected into the stirring barrel through the feeding port, then the stirring assembly conducts stirring, slurry is discharged from the discharging port after stirring is finished, the size of the single stirring barrel is small, and the stirring barrels operate independently and conduct feeding separately; due to the fact that the volume of the single cylinder is a fixed value, quantitative grouting can be achieved by controlling the number of the working stirring cylinders, accurate control over the grouting amount is achieved, and the grouting effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grouting machines, and specifically to a concrete quantitative grouting machine for shield construction. Background Art

[0002] A shield machine is a tunneling equipment integrating technologies such as machinery, electricity, hydraulics, and sensing, and is widely used in fields such as urban subways, highway tunnels, and water conservancy projects. Its advantages lie in high automation, good construction accuracy, and strong safety, and it can effectively reduce ground settlement and the impact on the surrounding environment. In recent years, with the acceleration of the urbanization process and the growth of the demand for underground space development, shield machines have been widely used in regions such as China, Japan, and Europe, especially showing outstanding performance under complex geological conditions. In the future, with the development of intelligence and greenness, shield machines will play a greater role in the development of deep underground space.

[0003] After the shield machine advances at the front end, it is necessary to lay segments, and then grout in the gaps between the segments and the soil to achieve the purposes of stabilizing the bottom layer, controlling surface settlement, improving the structural waterproofness, and adjusting the tunnel attitude. Therefore, the grouting volume is extremely crucial.

[0004] Under the existing technology, a large amount of slurry is produced by prior stirring and then pumped for grouting. It is impossible to accurately control the grouting volume and perform quantitative grouting, which greatly affects the grouting effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a concrete quantitative grouting machine for shield construction to solve the problems raised in the existing technology.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A concrete quantitative grouting machine for shield construction, including an installation frame. A number of mixing drums are evenly installed in the installation frame. An upper round cover is installed at the upper end of the mixing drum. A number of feed ports are opened on the upper round cover. An installation hole is opened on the upper round cover, and a mixing component is installed on the installation hole. A lower round cover is installed at the lower end of the mixing drum. A discharge port is opened on the lower round cover. When it is necessary to provide concrete for shield construction, raw materials are injected into the mixing drum through the feed port, and then the raw materials are stirred by the mixing component. After the stirring is completed, the slurry is discharged from the discharge port. By arranging a number of mixing drums in the installation frame, compared with the traditional mixing device, the volume of a single mixing drum of this invention is small, and a number of mixing drums operate independently and supply materials separately. Since the volume of a single drum is a fixed value, the quantitative grouting can be achieved by controlling the number of mixing drums in operation, realizing the precise control of the grouting volume, improving the grouting effect, and at the same time avoiding the waste of raw materials that may be caused by a large amount of stirring at one time, saving raw materials and reducing the production cost.

[0007] As a preferred technical solution, a discharge valve is installed at the discharge port. A plurality of discharge pipes are installed below the mixing drums. The inlet end of the discharge pipe is connected to a plurality of discharge valves. The discharge valve is a one-way pressure valve. Since multiple mixing drums carry out grouting work respectively and the pipelines are interconnected, the discharge valve adopts the working mode of a one-way valve, which can effectively prevent the mixing drums from generating a backflow phenomenon. The pressure valve can prevent the slurry from leaking during the mixing process, thereby affecting the quality of the slurry, and can ensure the mixing quality of the slurry, further improving the grouting effect.

[0008] As a preferred technical solution, the mixing assembly includes a motor mounting frame, a mixing motor, an electric telescopic rod, and mixing blades;

[0009] A motor mounting frame is installed at the upper end of the mounting frame. A plurality of mixing motors are evenly installed on the motor mounting frame. The installation positions of the plurality of mixing motors are coaxial with the mounting holes. An electric telescopic rod is installed on the output shaft of the mixing motor. The electric telescopic rod penetrates through the mounting hole. A mixing blade is installed at the end of the electric telescopic rod. The electric telescopic rod is electrically connected to the mixing motor.

[0010] As a preferred technical solution, a grouting assembly is provided at the end of the electric telescopic rod, and a heat dissipation assembly is provided on the mounting frame.

[0011] As a preferred technical solution, the grouting assembly includes a connecting block, a connecting rod, a fluid guide, an upper cover, a lower cover, a turntable, a driven gear, a driving motor, a driving gear, a chute, a shutter blade, a slider, a guide post, and a guide groove;

[0012] A connecting block is installed at the end of the electric telescopic rod. Three connecting rods are installed on the connecting block. The three connecting rods are arranged in a circular pattern. A fluid guide is installed at the end of the connecting rod. An upper cover is installed below the fluid guide. A lower cover is installed on the upper cover. A turntable is rotatably installed on the lower cover. A plurality of shutter blades are movably installed between the turntable and the upper cover. A slider is installed on the side of the shutter blade close to the turntable. A chute is formed on the turntable. The slider is slidably installed in the chute. A guide post is installed on the side of the shutter blade away from the turntable. A guide groove is formed on the upper cover. The guide post is slidably installed in the guide groove.

[0013] As a preferred technical solution, the hollow part of the fluid guide is in an inverted conical shape. The outer circle radii of the upper cover and the lower cover are the same as the inner diameter of the mixing drum. When the grouting assembly works, the upper cover and the lower cover can be closely attached to the mixing drum to apply pressure to the slurry and reduce the upward overflow of the slurry.

[0014] As a preferred technical solution, the driving motor is electrically connected to the electric telescopic rod. The sum of the angles of the vertices of several shutter blades is 360 degrees. The rotation of several shutter blades forms a shutter mechanism to realize the closing and opening of the grouting assembly and ensure the normal progress of the grouting work.

[0015] As a preferred technical solution, the heat dissipation assembly includes a partition board, a rotating column, heat dissipation blades and a transmission belt;

[0016] The partition board is installed on the installation frame. The partition board is located between the upper round cover and the motor mounting bracket. Several rotating columns are rotatably installed on the partition board. Heat dissipation blades are installed on the rotating columns. The rotating columns are connected to the electric telescopic rod through a transmission belt.

[0017] As a preferred technical solution, the feed port is connected to the outside through a material conveying pipe. The material conveying pipes are all placed in the space between the partition board and the upper round cover. Since the pipes are made of flexible materials and their positions may change, the positions of the heat dissipation blades are separated from the positions of the pipes by the partition board to prevent interference between the pipes and the heat dissipation blades and ensure the normal operation of the equipment.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By controlling the number of working mixing drums, quantitative grouting is achieved, the grouting volume is accurately controlled, the grouting effect is improved, and at the same time, the waste of raw materials caused by single large-scale mixing is avoided, raw materials are saved, and the production cost is reduced.

[0020] 2. The electric telescopic rod drives the stirring blades to stir the raw materials in the mixing drum at different depths, which can make the stirring more uniform, prevent the phenomenon of solid accumulation, improve the stirring quality of the slurry, and thus ensure the grouting effect.

[0021] 3. By setting the grouting assembly, the pressure can be applied to the slurry for slurry supply in the drum while not affecting the raw material supply, ensuring the normal operation of the equipment.

[0022] 4. A heat dissipation assembly is set, and heat dissipation is carried out through the heat dissipation blades, which can maintain the working temperature of the mixing drum and ensure the stirring quality of the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the first perspective structural schematic diagram of the present invention;

[0024] Figure 2 is the second perspective structural schematic diagram of the present invention;

[0025] Figure 3 is the first sectional structural schematic diagram of the present invention;

[0026] Figure 4 The second sectional view structure diagram of the present invention;

[0027] Figure 5 The structure diagram of the grouting component of the present invention;

[0028] Figure 6 The sectional view structure diagram of the grouting component of the present invention;

[0029] Figure 7 The first partial structure diagram of the grouting component of the present invention;

[0030] Figure 8 The second partial structure diagram of the grouting component of the present invention;

[0031] Figure 9 The partial sectional view structure diagram of the grouting component of the present invention;

[0032] Figure 10 For the present invention Figure 6 The enlarged structure diagram of the position A in the present invention.

[0033] In the figure: 1, mounting frame; 2, mixing drum; 3, upper round cover; 4, lower round cover; 5, mounting hole; 6, feed inlet; 7, discharge outlet; 8, discharge valve; 9, discharge pipe;

[0034] 10, mixing component; 1001, motor mounting frame; 1002, mixing motor; 1003, electric telescopic rod; 1004, mixing blade;

[0035] 11, grouting component; 1101, connecting block; 1102, connecting rod; 1103, fluid guide body; 1104, upper cover body; 1105, lower cover body; 1106, turntable; 1107, driven gear; 1108, driving motor; 1109, driving gear; 1110, chute; 1111, shutter blade; 1112, slider; 1113, guide post; 1114, guide groove;

[0036] 12, heat dissipation component; 1201, partition board; 1202, rotating column; 1203, heat dissipation blade; 1204, transmission belt. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment: As Figures 1 - 4As shown in the figure, the present invention provides a technical solution for a concrete quantitative grouting machine for shield construction, which is characterized in that: the concrete quantitative grouting machine for shield construction includes an installation frame 1, and a plurality of mixing drums 2 are evenly installed in the installation frame 1. An upper round cover 3 is installed at the upper end of the mixing drum 2. A plurality of feeding ports 6 are provided on the upper round cover 3. An installation hole 5 is provided on the upper round cover 3, and a mixing assembly 10 is installed on the installation hole 5. A lower round cover 4 is installed at the lower end of the mixing drum 2, and a discharge port 7 is provided on the lower round cover 4.

[0039] When it is necessary to provide concrete for shield construction, raw materials are injected into the mixing drum 2 through the feeding port 6, and then the raw materials are stirred by the mixing assembly 10. After the stirring is completed, the slurry is discharged from the discharge port 7. By arranging a plurality of mixing drums 2 in the installation frame, compared with the traditional mixing device, the volume of a single mixing drum 2 of this invention is small, and a plurality of mixing drums 2 operate independently and supply materials separately. Since the volume of a single drum is a fixed value, the quantitative grouting can be achieved by controlling the number of mixing drums 2 working, realizing the precise control of the grouting volume, improving the grouting effect, and at the same time avoiding the waste of raw materials that may be caused by a large amount of stirring at one time, saving raw materials and reducing the production cost.

[0040] A discharge valve 8 is installed on the discharge port 7. A discharge pipe 9 is installed below a plurality of mixing drums 2. The inlet end of the discharge pipe 9 is connected to a plurality of discharge valves 8, and the discharge valve 8 is a one-way pressure valve.

[0041] Since a plurality of mixing drums 2 carry out grouting work separately, and the pipelines are interconnected with each other, and the discharge valve 8 adopts the working mode of a one-way valve, it can effectively prevent the mixing drum 2 from generating a backflow phenomenon. The pressure valve can prevent the slurry from leaking during the stirring process, thus affecting the quality of the slurry, and can ensure the stirring quality of the slurry, further improving the grouting effect.

[0042] As Figures 3 - 6 shown, the mixing assembly 10 includes a motor mounting frame 1001, a mixing motor 1002, an electric telescopic rod 1003 and a mixing blade 1004;

[0043] The motor mounting frame 1001 is installed at the upper end of the installation frame 1. A plurality of mixing motors 1002 are evenly installed on the motor mounting frame 1001. The installation positions of the plurality of mixing motors 1002 are coaxial with the installation hole 5. An electric telescopic rod 1003 is installed on the output shaft of the mixing motor 1002. The electric telescopic rod 1003 passes through the installation hole 5. A mixing blade 1004 is installed at the end of the electric telescopic rod 1003, and the electric telescopic rod 1003 is electrically connected to the mixing motor 1002.

[0044] After injecting raw materials into the mixing drum 2, start the mixing motor 1002. The output shaft of the mixing motor 1002 drives the mixing blades 1004 to rotate through the electric telescopic rod 1003, so as to mix the raw materials. When the mixing motor 1002 is working, it will emit an electrical signal to control the electric telescopic rod 1003 to slowly extend, so as to mix the raw materials at different depths in the mixing drum 2, prevent the phenomenon of solid accumulation, improve the mixing quality of the slurry, and thus ensure the grouting effect.

[0045] A grouting component 11 is arranged at the end of the electric telescopic rod 1003, and a heat dissipation component 12 is arranged on the mounting frame 1.

[0046] As Figures 3 - 10 shown, the grouting component 11 includes a connecting block 1101, a connecting rod 1102, a fluid guide 1103, an upper cover 1104, a lower cover 1105, a turntable 1106, a driven gear 1107, a driving motor 1108, a driving gear 1109, a chute 1110, a shutter blade 1111, a slider 1112, a guide post 1113 and a guide groove 1114;

[0047] A connecting block 1101 is installed at the end of the electric telescopic rod 1003. Three connecting rods 1102 are installed on the connecting block 1101. The three connecting rods 1102 are arranged in a circular pattern. A fluid guide 1103 is installed at the end of the connecting rod 1102. An upper cover 1104 is installed below the fluid guide 1103. A lower cover 1105 is installed on the upper cover 1104. A turntable 1106 is rotatably installed on the lower cover 1105. A plurality of shutter blades 1111 are movably installed between the turntable 1106 and the upper cover 1104. A slider 1112 is installed on the side of the shutter blade 1111 close to the turntable 1106. A chute 1110 is formed on the turntable 1106. The slider 1112 is slidably installed in the chute 1110. A guide post 1113 is installed on the side of the shutter blade 1111 away from the turntable 1106. A guide groove 1114 is formed on the upper cover 1104. The guide post 1113 is slidably installed in the guide groove 1114.

[0048] The hollow part of the fluid guide 1103 is in an inverted conical shape, and the outer circle radius of the upper cover 1104 and the lower cover 1105 is the same as the inner diameter of the mixing drum 2.

[0049] The driving motor 1108 is electrically connected to the electric telescopic rod 1003, and the sum of the angles of the vertices of the plurality of shutter blades 1111 is 360 degrees.

[0050] A height sensor is installed at the end of the lower cover 1105, and this height sensor is used to measure the distance between the lower end of the lower cover 1105 and the bottom of the mixing drum 2.

[0051] When the electric telescopic rod 1003 controls the stirring blade 1004 to stir the raw materials, the electric telescopic rod 1003 will not extend to the upper and lower ends of the mixing drum 2. When the electric telescopic rod 1003 receives a signal to perform grouting, the electric telescopic rod 1003 contracts to the top of the mixing drum 2. At this time, the height sensor will send an electrical signal to control the driving motor 1108 to rotate forward regularly. The driving motor 1108 drives the driving gear 1109 to rotate. Due to the meshing effect, the driving gear 1109 drives the driven gear to rotate. The driven gear 1107 drives the turntable 1106 to rotate forward. Due to the blocking of the slider 1112 by the chute 1110, when the turntable 1106 rotates forward, the tips of the shutter blades 1111 gradually approach each other, closing the opening below the fluid guide 1103. At this time, the electric telescopic rod 1003 extends again. Since the shutter blades 1111 are closed, under the drive of the electric telescopic rod 1003, the lower cover 1105 and the shutter blades 1111 generate a downward pressure on the slurry, pushing the slurry out of the mixing drum 2 to achieve the feeding of the slurry. When the electric telescopic rod 1003 drives the lower cover 1105 to contact the bottom of the mixing drum 2 and the grouting is completed, at this time, the height sensor will send an electrical signal to control the driving motor 1108 to rotate in reverse, so that the shutter blades 1111 cancel the closing, so as to perform the next operation.

[0052] When the electric telescopic rod 1003 contracts after stirring, the upper cover 1104 may drive some solid particles to move upward, affecting the quality of the slurry. Through the inverted cone design, this situation can be effectively prevented. At the same time, it is convenient for the raw materials to fall downward when inputting the raw materials, ensuring the normal transportation of the raw materials and the slurry, and further improving the stirring quality of the slurry.

[0053] The rotation of the shutter blades 1111 forms a shutter structure. Without affecting the supply of raw materials, it can also apply pressure to the slurry to supply the slurry, ensuring the normal operation of the equipment.

[0054] The grouting assembly 11 will squeeze and feed the corresponding number of mixing drums 2 according to the demand for the amount of slurry, and the mixing assembly 10 in the mixing drum 2 that does not feed will continue to operate to prevent the concrete from solidifying and avoid blocking the discharge port 7 with concrete.

[0055] The heat dissipation assembly 12 includes a partition 1201, a rotating column 1202, heat dissipation fins 1203 and a transmission belt 1204;

[0056] The partition 1201 is installed on the installation frame 1. The partition is located between the upper round cover 3 and the motor mounting frame 1001. A number of rotating columns 1202 are rotatably installed on the partition 1201. Heat dissipation fins 1203 are installed on the rotating columns 1202. The rotating columns 1202 are connected to the electric telescopic rod 1003 through the transmission belt 1204.

[0057] When the stirring motor 1002 drives the electric telescopic rod 1003 to work, the electric telescopic rod 1003 drives the rotating column 1202 to rotate through the transmission belt 1204. The rotating column 1202 drives the heat dissipation blades 1203 to rotate, discharging the heat generated by the stirring motor 1002 and during the stirring process upward. If multiple stirring motors 1002 work simultaneously, a large amount of heat energy will be generated. If the heat energy cannot be removed in time, the temperature inside the mixing drum 2 will increase, which will affect the quality of the slurry. Therefore, heat dissipation through the heat dissipation blades can maintain the working temperature of the mixing drum and ensure the mixing quality of the slurry.

[0058] The feed inlet 6 is connected to the outside through a feed pipe, and all the feed pipes are placed in the space between the partition 1201 and the upper circular cover 3.

[0059] Since the pipeline is made of flexible material and its position may change, the position of the heat dissipation blades 1203 is separated from the position of the pipeline by the partition 1201 to prevent interference between the pipeline and the heat dissipation blades 1203 and ensure the normal operation of the equipment.

[0060] The working principle of the present invention:

[0061] When concrete needs to be provided for shield construction, raw materials are injected into the mixing drum 2 through the feed inlet 6, and then the raw materials are stirred by the stirring assembly 10. After the stirring is completed, the slurry is discharged from the discharge port 7. By arranging multiple mixing drums 2 in the installation frame, compared with the traditional mixing device, the volume of a single mixing drum 2 of this invention is small, and several mixing drums 2 operate independently and supply materials separately. Since the volume of a single drum is a fixed value, the accurate control of the grouting volume can be achieved by controlling the number of mixing drums 2 working, improving the grouting effect. At the same time, it avoids the waste of raw materials that may be caused by a large amount of stirring at one time, saves raw materials, and reduces production costs.

[0062] Since multiple mixing drums 2 carry out grouting work separately and the pipelines are interconnected with each other, the discharge valve 8 adopts the working mode of a one-way valve, which can effectively prevent the mixing drum 2 from generating a backflow phenomenon. The pressure valve can prevent the slurry from leaking during the stirring process, thereby affecting the quality of the slurry, ensuring the mixing quality of the slurry, and further improving the grouting effect.

[0063] After raw materials are injected into the mixing drum 2, the stirring motor 1002 is started. The output shaft of the stirring motor 1002 drives the stirring blade 1004 to rotate through the electric telescopic rod 1003 to stir the raw materials. When the stirring motor 1002 is working, it will emit an electrical signal to control the electric telescopic rod 1003 to slowly extend, so as to stir the raw materials at different depths in the mixing drum 2, prevent the phenomenon of solid accumulation, improve the mixing quality of the slurry, and thus ensure the grouting effect.

[0064] When the electric telescopic rod 1003 controls the stirring blade 1004 to stir the raw materials, the electric telescopic rod 1003 will not extend to the upper and lower ends of the mixing drum 2. When the electric telescopic rod 1003 receives a signal to perform grouting, the electric telescopic rod 1003 contracts to the top of the mixing drum 2. At this time, the height sensor will send an electrical signal to control the driving motor 1108 to rotate forward regularly. The driving motor 1108 drives the driving gear 1109 to rotate. Due to the meshing effect, the driving gear 1109 drives the driven gear to rotate. The driven gear 1107 drives the turntable 1106 to rotate forward. Due to the blocking of the slider 1112 by the chute 1110, when the turntable 1106 rotates forward, the tips of the shutter blades 1111 gradually approach each other, closing the opening below the fluid guide 1103. At this time, the electric telescopic rod 1003 extends again. Since the shutter blades 1111 are closed, under the drive of the electric telescopic rod 1003, the lower cover 1105 and the shutter blades 1111 generate a downward pressure on the slurry, pushing the slurry out of the mixing drum 2 to achieve the feeding of the slurry. When the electric telescopic rod 1003 drives the lower cover 1105 to contact the bottom of the mixing drum 2 and the grouting is completed, at this time, the height sensor will send an electrical signal to control the driving motor 1108 to rotate in reverse, so that the shutter blades 1111 cancel the closing to facilitate subsequent re-operation.

[0065] When the electric telescopic rod 1003 contracts after stirring, the upper cover 1104 may drive some solid particles to move upward, affecting the quality of the slurry. Through the inverted cone design, this situation can be effectively prevented. At the same time, it is convenient for the raw materials to fall downward when inputting the raw materials, ensuring the normal transportation of the raw materials and the slurry, and further improving the stirring quality of the slurry.

[0066] The rotation of the shutter blades 1111 forms a shutter structure. Without affecting the supply of raw materials, it can simultaneously apply pressure to the slurry to supply the slurry, ensuring the normal operation of the equipment.

[0067] The grouting assembly 11 will squeeze and feed the corresponding number of mixing drums 2 according to the demand for the amount of slurry, and the mixing assembly 10 in the mixing drums 2 that do not feed will continue to operate to prevent the concrete from solidifying and avoid blocking the discharge port 7 with concrete.

[0068] When the stirring motor 1002 drives the electric telescopic rod 1003 to work, the electric telescopic rod 1003 drives the rotating column 1202 to rotate through the transmission belt 1204. The rotating column 1202 drives the heat dissipation blades 1203 to rotate, discharging the heat generated by the stirring motor 1002 and possibly generated during the stirring process upward. If multiple stirring motors 1002 work simultaneously, a large amount of heat energy will be generated. If the heat energy cannot be removed in time, the temperature inside the mixing drum 2 will rise, affecting the quality of the slurry. Therefore, heat dissipation through the heat dissipation blades can maintain the working temperature of the mixing drum and ensure the stirring quality of the slurry.

[0069] Since the pipeline is made of flexible material and its position may change, the position of the heat dissipation fins 1203 is separated from that of the pipeline by the partition plate 1201 to prevent interference between the pipeline and the heat dissipation fins 1203 and ensure the normal operation of the equipment.

[0070] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A concrete quantitative grouting machine for shield construction, characterized in that: The quantitative concrete grouting machine for shield construction comprises an installation frame (1), wherein a plurality of mixing drums (2) are evenly installed in the installation frame (1), an upper round cover (3) is installed at the upper end of the mixing drum (2), a plurality of feed ports (6) are provided on the upper round cover (3), a mounting hole (5) is provided on the upper round cover (3), a mixing assembly (10) is installed on the mounting hole (5), a lower round cover (4) is installed at the lower end of the mixing drum (2), and a discharge port (7) is provided on the lower round cover (4).

2. A concrete quantitative grouting machine for shield construction according to claim 1, characterized in that: A discharge valve (8) is installed on the discharge port (7), and a discharge pipe (9) is installed below a plurality of the mixing drums (2). The inlet end of the discharge pipe (9) is connected to a plurality of discharge valves (8), and the discharge valve (8) is a one-way pressure valve.

3. A concrete quantitative grouting machine for shield construction according to claim 1, characterized in that: The stirring assembly (10) comprises a motor mounting frame (1001), a stirring motor (1002), an electric telescopic rod (1003) and a stirring blade (1004); A motor mounting frame (1001) is mounted on the upper end of the mounting frame (1), a plurality of stirring motors (1002) are evenly mounted on the motor mounting frame (1001), the mounting positions of the plurality of stirring motors (1002) are coaxial with the mounting hole (5), an electric telescopic rod (1003) is mounted on the output shaft of the stirring motor (1002), the electric telescopic rod (1003) passes through the mounting hole (5), a stirring blade (1004) is mounted on the end of the electric telescopic rod (1003), and the electric telescopic rod (1003) is electrically connected to the stirring motor (1002).

4. A concrete quantitative grouting machine for shield construction according to claim 3, characterized in that: A grouting assembly (11) is provided at the end of the electric telescopic rod (1003), and a heat dissipation assembly (12) is provided on the installation frame (1).

5. A concrete quantitative grouting machine for shield construction according to claim 4, characterized in that: The grouting assembly (11) comprises a connecting block (1101), a connecting rod (1102), a guide body (1103), an upper cover (1104), a lower cover (1105), a rotating disk (1106), a driven gear (1107), a driving motor (1108), a driving gear (1109), a sliding groove (1110), a shutter blade (1111), a sliding block (1112), a guide column (1113) and a guide groove (1114); A connecting block (1101) is installed at the end of the electric telescopic rod (1003), and three connecting rods (1102) are installed on the connecting block (1101). The three connecting rods (1102) are arranged in a circle. A guide body (1103) is installed at the end of the connecting rod (1102). An upper cover body (1104) is installed below the guide body (1103). A lower cover body (1105) is installed on the upper cover body (1104). A turntable (1106) is rotatably installed on the lower cover body (1105). The turntable (1106) is rotatably connected to the upper cover body (1104). ) are movably mounted between the shutter blades (1111), a slider (1112) is mounted on the shutter blades (1111) close to the rotating disk (1106), a slide groove (1110) is provided on the rotating disk (1106), the slider (1112) is slidably mounted in the slide groove (1110), a guide column (1113) is mounted on the shutter blades (1111) away from the rotating disk (1106), a guide groove (1114) is provided on the upper cover body (1104), and the guide column (1113) is slidably mounted in the guide groove (1114).

6. A concrete quantitative grouting machine for shield construction according to claim 5, characterized in that: The hollow portion of the flow guide (1103) is in an inverted cone shape, and the outer radius of the upper cover (1104) and the lower cover (1105) is the same as the inner diameter of the mixing drum (2).

7. A concrete quantitative grouting machine for shield construction according to claim 6, characterized in that: The driving motor (1108) is electrically connected to the electric telescopic rod (1003), and the sum of the top angles of the plurality of shutter blades (1111) is 360 degrees.

8. The concrete quantitative grouting machine for shield construction according to claim 4, characterized in that: The heat dissipation component (12) comprises a partition (1201), a rotating column (1202), heat dissipation blades (1203) and a transmission belt (1204); A partition (1201) is installed on the installation frame (1), and the partition is located between the upper circular cover (3) and the motor installation frame (1001). A plurality of rotating columns (1202) are rotatably installed on the partition (1201), and heat dissipation blades (1203) are installed on the rotating columns (1202). The rotating columns (1202) are connected to the electric telescopic rod (1003) via a transmission belt (1204).

9. A concrete quantitative grouting machine for shield construction according to claim 8, characterized in that: The feed port (6) is connected to the outside world via a feed pipe, and the feed pipe is placed in the space between the partition (1201) and the upper circular cover (3).

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