Pressure grouting machine

Abstract

The invention discloses a pressure grouting machine, belongs to the technical field of grouting devices, and aims to solve the problems that an existing grouting machine is inconvenient to use and the like. The invention discloses a pressure grouting machine. The pressure grouting machine comprises a grouting gun; the stirring device is used for stirring the raw materials to form slurry; the weighing device is used for measuring the weight of the raw materials entering the stirring device and / or the formed slurry; the slurry formed by the stirring device can fall into the slurry tank, and the slurry in the slurry tank can be fed into the gun main body. The pressure grouting machine comprises the grouting gun, the stirring device, the weighing device and the slurry tank, stirred slurry can fall into the slurry tank and then is directly fed into the grouting gun, manual filling is not needed, the labor intensity is low, and the working efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grouting device, in particular to a pressure grouting machine. BACKGROUND

[0002] In the field of building construction, sometimes it is necessary to fix the anchor rod on the base, and then install various structures on the anchor rod. In order to improve the stability of the structure, the anchor rod must be firmly fixed on the base. To achieve this purpose, it is usually necessary to dig a deep pit on the base, insert a part of the anchor rod into the deep pit, and then fill the pit with cement slurry. After the cement slurry hardens, the anchor rod is firmly fixed with the base.

[0003] The existing grouting machine mainly includes a grouting pump and a grouting gun. The anchor rod is partially inserted into the hollow pipe of the grouting gun. The outlet end of the grouting pump is connected to the grouting gun through a pipeline. The grouting pump can send the slurry in the mixer into the grouting gun. The slurry flows into the deep pit along the grouting gun until the deep pit is completely filled.

[0004] The defects of the existing grouting gun include: in order to make the viscosity and fluidity of the slurry meet the requirements, the weight or volume of the raw materials such as cement and water needs to be measured manually before the slurry is formed by stirring. The raw material ratio needs to meet the set value to ensure that the slurry can smoothly fill the deep pit through the grouting gun, and the anchor rod and the base are more firmly bonded. The operation of manually measuring the raw materials is complex and inconvenient to use. In the prior art, the slurry formed by stirring needs to be manually filled into the grouting pump, which is labor-intensive and low in work efficiency. SUMMARY

[0005] The purpose of the present application is to provide a pressure grouting machine, which solves the problem of inconvenient use of the existing grouting machine and has high work efficiency.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] The pressure grouting machine comprises: a grouting gun, including a tubular gun main body, a cavity in the gun main body for passing the anchor rod and flowing the slurry; a stirring device for stirring the raw materials to form the slurry; a weighing device for measuring the weight of the raw materials entering the stirring device and / or the formed slurry; and a slurry tank, the slurry formed by the stirring device can fall into the slurry tank, and the slurry in the slurry tank can be sent into the gun main body.

[0008] In one preferred embodiment, the pressure grouting machine further comprises: a delivery pump connected to the slurry tank; and a delivery pipe, the two ends of which are respectively connected to the output end of the delivery pump and the feed inlet of the gun main body. The delivery pump can deliver the slurry in the slurry tank to the feed inlet through the delivery pipe.

[0009] In one preferred embodiment, the pressure grouting machine comprises at least two of the grouting guns, and all the grouting guns are connected to the multi-way joint of the delivery pump through the delivery pipes respectively.

[0010] In one preferred embodiment, the pressure grouting machine further comprises a positioning member, a through hole is formed in the side wall of the gun body, the positioning member can be partially inserted into the gun body through the through hole and the length of the insertion can be adjusted, and the positioning member can abut against the anchor rod to abut the anchor rod against the inner wall surface of the gun body; and a sealing member is sleeved on the end of the gun body away from the delivery pipe, and the sealing member is used to set the gap between the outer wall surface of the gun body and the inner wall surface of the grouting space.

[0011] In one preferred embodiment, the pressure grouting machine comprises at least two of the grouting guns, and the sealing members arranged on the adjacent grouting guns abut against each other, and all the sealing members collectively fill the gap between the outer wall surfaces of all the gun bodies and the inner wall surface of the grouting space.

[0012] In one preferred embodiment, the appearance size of the sealing member can be adjusted, and the appearance size of the sealing member is increased when grouting, and the appearance size of the sealing member is reduced after grouting.

[0013] In one preferred embodiment, the pressure grouting machine further comprises a sealing gas pipeline, the sealing member is an annular sleeve made of flexible material, the sealing gas pipeline is communicated to the inner cavity of the sleeve, and the sealing gas pipeline can transmit gas into the inner cavity of the sleeve to increase the appearance size of the sealing member; and when the gas in the inner cavity of the sleeve is reduced, the sealing member elastically contracts to reduce the appearance size.

[0014] In one preferred embodiment, the pressure grouting machine comprises at least two of the positioning members, and each of the positioning members is arranged at intervals along the axial direction of the anchor rod, and the end of each of the positioning members abuts against the outer wall of the anchor rod.

[0015] In one preferred embodiment, the pressure grouting machine further comprises a pressure detection device, and the pressure detection device is used to detect the pressure in the gun body to determine whether the grouting space has been filled with grouting.

[0016] In one preferred embodiment, the pressure grouting machine further comprises an air hammer, and the air hammer is used to vibrate the anchor rod.

[0017] The pressure grouting machine disclosed by the application comprises a grouting gun, a stirring device, a weighing device and a slurry tank, slurry after stirring can fall into the slurry tank and then be directly sent into the grouting gun, manual filling is not needed, labor intensity is low, and work efficiency is high. The weighing device can conveniently and quickly measure the weight of cement, water and other raw materials, ensure that the proportion of various raw materials is more accurate, improve slurry quality, and be more convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the pressure grouting machine provided by the embodiment of the application;

[0019] Figure 2 is a combined structural schematic view of the stirring device, the slurry tank and the delivery pump provided by the embodiment of the application;

[0020] Figure 3 is a structural schematic view of the grouting gun provided by the embodiment of the application;

[0021] Figure 4 is Figure 3 is a local enlarged view of A in FIG. 1;

[0022] Figure 5 is Figure 3 is a local enlarged view of B in FIG. 1;

[0023] Figure 6 is a sectional view of the grouting gun provided by the embodiment of the application;

[0024] Figure 7 is Figure 6 is a local enlarged view of C in FIG. 1;

[0025] Figure 8 is Figure 6 is a local enlarged view of D in FIG. 1.

[0026] In the drawings:

[0027] 1, grouting gun; 2, positioning piece; 3, sealing piece; 4, sealing gas pipeline; 5, stirring device; 6, slurry tank; 7, delivery pump; 8, delivery pipe; 11, gun main body; 12, feeding port; 31, sleeve inner cavity; 71, multi-way joint; 100, anchor rod. DETAILED DESCRIPTION

[0028] To make the above objectives, features and advantages of the application more apparent, the specific embodiments of the application are described in detail below with reference to the drawings. In the following description, a lot of specific details are set forth in order to fully understand the application. However, the application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the application, so the application is not limited by the specific embodiments disclosed below.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] This embodiment discloses a pressure grouting machine, such as Figure 1 and Figure 2 As shown, the pressure grouting machine includes a grouting gun 1, a mixing device 5, a weighing device, and a grout tank 6. The grout tank 6 is located below the mixing device 5. The mixing device 5 is used to mix the raw materials to form a grout, which falls into the grout tank 6. The grouting gun 1 includes a tubular gun body 11, and the cavity in the gun body 11 is used to insert the anchor rod 100 and to allow the grout to flow. The weighing device is used to measure the weight of the raw materials entering the mixing device 5 and / or the formed grout, ensuring that raw materials such as cement and water are added to the mixing device 5 in proportion, improving the quality of the grout, and ensuring that the anchor rod 100 can be firmly fixed to the base after the grout dries and hardens. The specific structure and location of the weighing device are not limited, as long as it can measure the weight of the raw materials entering the mixing device 5 and / or the formed grout. It is understandable that the slurry tank 6 is placed below the mixing device 5 to facilitate the receiving of slurry from the mixing device 5. As long as it does not delay the slurry from entering the slurry tank 6, the slurry tank 6 may not be placed below the mixing device 5.

[0035] This pressure grouting machine integrates the grouting gun 1, mixing device 5, and grout tank 6. The mixed grout falls into the grout tank 6 and is then directly fed into the grouting gun 1, eliminating the need for manual loading, reducing labor intensity, and increasing work efficiency. The weighing device allows for convenient and quick measurement of the weight of raw materials such as cement and water, ensuring more accurate proportions of various materials, improving grout quality, and making it more convenient to use.

[0036] The specific method by which the grout is transferred from the grout tank 6 to the grouting gun 1 is not limited. In this embodiment, the pressure grouting machine also includes a delivery pump 7 and a delivery pipe 8. The delivery pump 7 is connected to the grout tank 6, and the two ends of the delivery pipe 8 are respectively connected to the output end of the delivery pump 7 and the inlet 12 of the gun body 11 (e.g., ...). Figure 4 (As shown) Connection. The slurry in the slurry tank 6 can enter the delivery pump 7, and the delivery pump 7 can deliver the slurry to the feed inlet 12 (as shown) through the delivery pipe 8. Figure 4 As shown in the figure.

[0037] The specific structure of the delivery pump 7 and the delivery pipe 8 is not limited. In this embodiment, the delivery pump 7 can be, but is not limited to, a screw delivery pump, which has stronger thrust and more stable overall performance. The delivery pipe 8 is a flexible hose, which does not obstruct the adjustment of the position and height of the gun body 11, making it more convenient to use.

[0038] Based on the above structure, in this embodiment, the pressure grouting machine also includes an electrical control cabinet and a hydraulic pump station. The electrical control cabinet has multiple buttons, allowing the user to start and stop the pressure grouting machine and control its process steps as needed. Inside the electrical control cabinet is a control device connected to the pressure grouting machine. The control device can be a centralized or distributed controller; for example, it can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control the pressure grouting machine and enable it to perform its functions.

[0039] The specific structure of the hydraulic pump station is not limited; any existing hydraulic pump station can be used as long as it can provide hydraulic pressure to the various structures in the pressure grouting machine that require hydraulic pressure.

[0040] To improve grouting efficiency, in this embodiment, the pressure grouting machine includes at least two grouting guns 1, and all grouting guns 1 are connected to the multi-port connector 71 of the delivery pump 7 via delivery pipes 8. The multi-port connector 71 includes one inlet hole and multiple outlet holes. The specific number of outlet holes is not limited and can be selected according to the number of grouting guns 1.

[0041] Based on the above structure, such as Figures 3 to 8 As shown, the pressure grouting machine also includes a positioning component 2 and a sealing component 3. A through hole is provided on the side wall of the gun body 11. The positioning component 2 can be partially inserted into the gun body 11 through the through hole and the insertion length can be adjusted. The positioning component 2 can abut against the anchor rod 100 so that the anchor rod 100 abuts against the inner wall surface of the gun body 11. The sealing component 3 is sleeved on the end of the gun body 11 away from the delivery pipe 8. During grouting, the sealing component 3 is used to fill the gap between the outer wall surface of the gun body 11 and the inner wall surface of the space to be grouted.

[0042] When multiple grouting guns 1 inject grout into the same grouting space, the sealing elements 3 installed on adjacent grouting guns 1 expand and abut against each other. All the sealing elements 3 together fill the gap between the outer wall of the entire gun body 11 and the inner wall of the grouting space, ensuring that the grout is compressed in the grouting space. Grout can also be pressed into the gaps on the side wall of the grouting space, improving the tightness of the connection between the anchor rod 100 and the dry hardened grout and the grouting space, making the anchor rod 100 more secure.

[0043] The positioning component 2 of this pressure grouting machine can be adjusted in length to be inserted into the gun body 11 according to actual conditions. When the anchor rod 100 is thinner, the positioning component 2 extends longer; when the anchor rod 100 is thicker, the positioning component 2 extends shorter, so as to fix the anchor rod 100 against the inner wall surface of the gun body 11, ensuring that the anchor rod 100 will not move or shake radially when the grout is poured from the top of the gun body 11. The position of the anchor rod 100 is more stable and the contact between the anchor rod 100 and the grout is tighter. It can adapt to anchor rods 100 of various specifications and sizes, and provides a better user experience.

[0044] The specific structure of the positioning element 2 is not limited, and it can be, but is not limited to, a bolt. The through hole opened on the side wall of the gun body 11 is a threaded hole. When the positioning element 2 rotates in one direction, its length extending into the gun body 11 increases; when the positioning element 2 rotates in the opposite direction, its bottom is gradually unscrewed, and the length of the positioning element 2 extending into the gun body 11 decreases.

[0045] In this embodiment, the pressure grouting machine includes at least two positioning elements 2, which are spaced apart along the axial direction of the anchor rod 100. The ends of all positioning elements 2 abut against the outer wall of the anchor rod 100, improving the stability of the anchor rod 100. When the diameter of the anchor rod 100 varies at different locations, the length of each positioning element 2 extending into the gun body 11 will also vary, ensuring more stable positioning of the anchor rod 100.

[0046] The specific structure of the sealing element 3 is not limited, as long as it can fill the gap. In this embodiment, the external dimensions of the sealing element 3 can be adjusted. When grouting, the external dimensions of the sealing element 3 are increased to fill the gap between the outer wall of the gun body 11 and the inner wall of the space to be grouted; after grouting is completed, the external dimensions of the sealing element 3 are reduced so as not to affect the removal of the gun body 11 from the space to be grouted.

[0047] The specific structure for changing the external dimensions of the seal 3 is not limited. In this embodiment, the pressure grouting machine also includes a sealing gas pipe 4. The seal 3 is an annular sleeve made of flexible material, and the sealing gas pipe 4 is connected to the inner cavity 31 of the sleeve. The sealing gas pipe 4 can transmit gas into the inner cavity 31 of the sleeve. The seal 3 expands under the action of gas pressure, thereby increasing the external dimensions of the seal 3. When the gas in the inner cavity 31 of the sleeve decreases, the seal 3 elastically contracts, causing its external dimensions to shrink.

[0048] Based on the above structure, the pressure grouting machine also includes an air hammer for vibrating the anchor bolt 100 and a compressor for providing air to the air hammer. The compressor can compress air to a set state. After the compressed air is sent into the air hammer, its volume expands, thereby driving the air hammer to vibrate the anchor bolt 100. This makes the grout injected into the grouting space more evenly distributed and more compactly filled. After the grout dries and hardens, it can firmly fix the anchor bolt 100 in place, laying a solid foundation for subsequent use.

[0049] The compressor can also supply air to the sealing gas pipe 4 to inflate the inner cavity 31 of the sleeve and increase the external dimensions of the seal 3.

[0050] Based on the above structure, the pressure grouting machine also includes a pressure detection device for detecting the pressure inside the gun body 11. The inside of the gun body 11 is connected to the grouting space. When the pressure inside the gun body 11 reaches the set value, it indicates that the grouting space has been filled with grout and the pressure has reached the set value, thus completing the grouting work.

[0051] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A pressure grouting machine, characterized in that, include: The grouting gun (1) includes a tubular gun body (11), and the cavity in the gun body (11) is used for inserting anchor rods (100) and for the flow of grout. A stirring device (5) is used to stir the raw materials to form a slurry; A weighing device for measuring the weight of the raw materials entering the mixing device (5) and / or the slurry formed therefrom; as well as, The slurry tank (6) formed by the stirring device (5) can fall into the slurry tank (6), and the slurry in the slurry tank (6) can be sent into the gun body (11).

2. The pressure grouting machine according to claim 1, characterized in that, The pressure grouting machine also includes: The delivery pump (7) is connected to the slurry tank (6); and, The conveying pipe (8) is connected at both ends to the output end of the conveying pump (7) and the feed port (12) of the gun body (11), respectively. The conveying pump (7) can convey the slurry in the slurry tank (6) to the feed port (12) through the conveying pipe (8).

3. The pressure grouting machine according to claim 2, characterized in that, The pressure grouting machine includes at least two grouting guns (1), and all of the grouting guns (1) are connected to the multi-port joint (71) of the delivery pump (7) through the delivery pipe (8).

4. The pressure grouting machine according to claim 2, characterized in that, The pressure grouting machine also includes: The positioning element (2) has a through hole on the side wall of the gun body (11). The positioning element (2) can be partially inserted into the gun body (11) through the through hole and the insertion length can be adjusted. The positioning element (2) can abut against the anchor rod (100) to abut against the inner wall surface of the gun body (11); and, A sealing element (3) is fitted on the end of the gun body (11) away from the delivery pipe (8). The sealing element (3) is used to create a gap between the outer wall surface of the gun body (11) and the inner wall surface of the grouting space.

5. The pressure grouting machine according to claim 4, characterized in that, The pressure grouting machine includes at least two grouting guns (1), and the sealing elements (3) provided on adjacent grouting guns (1) abut against each other. All the sealing elements (3) together fill the gap between the outer wall surface of the entire gun body (11) and the inner wall surface of the space to be grouted.

6. The pressure grouting machine according to claim 4, characterized in that, The external dimensions of the seal (3) can be adjusted. When grouting is performed, the external dimensions of the seal (3) are increased; after grouting is completed, the external dimensions of the seal (3) are reduced.

7. The pressure grouting machine according to claim 6, characterized in that, The pressure grouting machine also includes a sealing gas pipe (4), and the sealing element (3) is an annular sleeve made of flexible material. The sealing gas pipe (4) is connected to the inner cavity (31) of the sleeve. The sealing gas pipe (4) can transmit gas into the inner cavity (31) of the sleeve so that the external size of the sealing element (3) increases. When the gas in the inner cavity (31) of the sleeve decreases, the sealing element (3) elastically contracts so that its external size decreases.

8. The pressure grouting machine according to claim 4, characterized in that, The pressure grouting machine includes at least two positioning elements (2), each positioning element (2) is spaced apart along the axial direction of the anchor rod (100), and the ends of all the positioning elements (2) abut against the outer wall of the anchor rod (100).

9. The pressure grouting machine according to any one of claims 1 to 8, characterized in that, The pressure grouting machine also includes a pressure detection device, which is used to detect the pressure inside the gun body (11) to determine whether the grouting space has been filled with grout.

10. The pressure grouting machine according to any one of claims 1 to 8, characterized in that, The pressure grouting machine also includes an air hammer, which is used to vibrate the anchor bolt (100).

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