Grouting device for karst area of foundation pit

Abstract

The grouting device for the foundation pit karst area comprises a grouting pipe, an L-shaped supporting frame, an adjusting base, a corrugated pipe, a connecting rod, a reset spring, a movable seat and a round hole, the outer side of the annular face of the grouting pipe is sleeved with the adjusting base, the round hole is formed in the adjusting base, and the adjusting base is connected with the grouting pipe in an attached mode. Fastening threaded holes are formed in the adjusting base and the grouting pipe correspondingly, inclined pipes are arranged on the left end face and the right end face of the grouting pipe correspondingly, connecting pipe openings are fixed to the tail ends of the inclined pipes, the connecting pipe openings are connected with connectors in an attached mode, corrugated pipes are arranged at the tail ends of the connectors, and L-shaped supporting frames are installed on the left end face and the right end face of the adjusting base correspondingly. The lower end face of the L-shaped supporting frame is provided with grout outlet bases, a connecting rod is installed between the grout outlet bases, the interiors of the grout outlet bases are movably connected with movable bases, grout outlets are formed in the movable bases and the grout outlet bases, the grout outlet speed and the grout outlet angle can be adjusted through the design, a constructor can conduct grouting on foundation pits of different sizes conveniently, and practicability is good.

Description

Technical Field

[0001] The utility model relates to a grouting device used in a foundation pit karst area, belonging to the technical field of grouting in foundation pit construction. Background Art

[0002] During foundation pit excavation in karst areas, the karst water distribution is extremely uneven and difficult to detect, and water inrush accidents are very likely to occur during foundation pit excavation. If the specific location and area of ​​karst water distribution cannot be ascertained during excavation, and if effective protection measures are not taken for the water inrush, it will often flood the construction site, destroy machinery and tools, cause equipment and personnel accidents, delay construction period, and increase project investment. Therefore, a grouting device is required.

[0003] After searching the publication number: CN212294615U, a grouting device for karst areas of foundation pits is disclosed. This design solves the problems of difficulty in injecting slurry and back-absorption of karst water during construction, effectively realizes the blocking of karst areas, has good construction effect, saves project investment, and ensures construction safety. However, this design cannot adjust the slurry discharge speed and slurry discharge angle, which is not convenient for constructors to grout foundation pits of different sizes, and has poor practicality. Now, a grouting device for karst areas of foundation pits is urgently needed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a grouting device for karst areas of foundation pits to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable structure and the design can adjust the slurry discharge speed and slurry discharge angle, which is convenient for constructors to grout foundation pits of different sizes and has good practicality.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme: a grouting device for karst areas of foundation pits, comprising a grouting pipe, an L-shaped support frame, an adjustment base, a bellows, a connecting rod, a reset spring, a movable seat and a circular hole, wherein the outer side of the annular surface of the grouting pipe is sleeved with an adjustment base, a circular hole is provided inside the adjustment base and is closely connected with the grouting pipe, fastening threaded holes are provided inside the adjustment base and the grouting pipe, and both left and right end surfaces of the grouting pipe are provided with inclined pipes, and the tail end of the inclined pipe is fixed with a connecting pipe mouth;

[0006] The connecting pipe mouth is fitted and connected by a connecting head, and a bellows is arranged at the tail end of the connecting head. L-shaped support frames are installed on both end surfaces of the left and right sides of the adjusting base, and a slurry outlet base is installed on the lower end surface of the L-shaped support frame. A connecting rod is installed between the slurry outlet bases, and a movable seat is movably connected inside the slurry outlet base. Slurry outlets are opened inside the movable seat and the slurry outlet base, and a reset spring is arranged between the movable seat and the slurry outlet base.

[0007] Furthermore, the adjustment base is fixed by a fastening bolt, the outer diameter of the fastening bolt is equal to the inner diameter of the fastening threaded hole, and the two can be fitted and rotatably connected.

[0008] Furthermore, the inner diameter of the circular hole is equal to the outer diameter of the grouting pipe, and the two can fit and slide in connection.

[0009] Furthermore, the connector is connected to the connecting pipe opening via threads.

[0010] Furthermore, a movable groove is provided inside the slurry discharge base, the specification of the movable groove matches the specification of the movable seat, and the two can be slidably connected to each other, and the slurry discharge openings provided inside the movable seat and the slurry discharge base are equal in size.

[0011] Furthermore, the inclined pipe, connecting head, connecting pipe mouth, corrugated pipe, slurry outlet base, slurry outlet and movable seat constitute a slurry outlet assembly, and six groups of slurry outlet assemblies are arranged. The six groups of slurry outlet assemblies have the same composition structure and are symmetrically arranged on the left and right sides of the grouting pipe.

[0012] The beneficial effects of the utility model: the utility model is a grouting device for karst areas of foundation pits. Because the utility model adds an L-shaped support frame, an adjustment base, a bellows, a connecting rod, a reset spring, a movable seat and a circular hole, the design can adjust the slurry discharge speed and the slurry discharge angle, which is convenient for constructors to grout foundation pits of different sizes, and has good practicality. It solves the problem that the original grouting device for karst areas of foundation pits cannot adjust the slurry discharge speed and the slurry discharge angle, which is not convenient for constructors to grout foundation pits of different sizes and has poor practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 It is a partial structural diagram of a grouting device used in karst areas of foundation pits according to the utility model;

[0015] Figure 2 This is a structural cross-sectional view of a grouting device used in a karst area of ​​a foundation pit according to the utility model;

[0016] Figure 3 It is a partial structural diagram of a grouting device used in karst areas of foundation pits according to the utility model;

[0017] In the figure: 1-grouting pipe, 2-fastening threaded hole, 3-inclined pipe, 4-connecting pipe mouth, 5-L-shaped support frame, 6-adjusting base, 7-connecting head, 8-corrugated pipe, 9-slurry outlet base, 10-connecting rod, 11-reset spring, 12-movable seat, 13-slurry outlet, 14-circular hole. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1-Figure 3 The utility model provides a technical solution: a grouting device for karst areas of foundation pits, comprising a grouting pipe 1, an L-shaped support frame 5, an adjusting base 6, a bellows 8, a connecting rod 10, a reset spring 11, a movable seat 12 and a circular hole 14, an adjusting base 6 is sleeved on the outer side of the annular surface of the grouting pipe 1, a circular hole 14 is opened inside the adjusting base 6 and is closely connected with the grouting pipe 1, fastening threaded holes 2 are opened inside the adjusting base 6 and the grouting pipe 1, inclined pipes 3 are arranged on both left and right end surfaces of the grouting pipe 1, and a connecting pipe port 4 is fixed at the tail end of the inclined pipe 3;

[0020] The connecting pipe mouth 4 is fittedly connected by a connecting head 7, and a bellows 8 is arranged at the tail end of the connecting head 7. L-shaped support frames 5 are installed on both end surfaces of the left and right sides of the adjusting base 6, and a slurry discharge base 9 is installed on the lower end surface of the L-shaped support frame 5. A connecting rod 10 is installed between the slurry discharge bases 9. A movable seat 12 is movably connected inside the slurry discharge base 9, and a slurry discharge port 13 is opened inside the movable seat 12 and the slurry discharge base 9. A reset spring 11 is arranged between the movable seat 12 and the slurry discharge base 9. This design can adjust the slurry discharge speed and slurry discharge angle, which is convenient for the constructors to grout foundation pits of different sizes and has good practicality.

[0021] As the first embodiment of the utility model: the adjusting base 6 is fixed by a fastening bolt, the outer diameter of the fastening bolt is equal to the inner diameter of the fastening threaded hole 2, and the two can be connected in a rotatable manner. The design fixes the adjusting base 6 by a rotatable manner of the fastening bolt and the fastening threaded hole 2. The inner diameter of the circular hole 14 is equal to the outer diameter of the grouting pipe 1, and the two can be connected in a slidable manner. The design enables the adjusting base 6 to move up and down through a slidable manner of the circular hole 14 and the grouting pipe 1, so that the adjusting base 6 drives the slurry outlet base 9 to move up and down, thereby changing the slurry outlet angle and slurry outlet speed of the slurry outlet 13.

[0022] The connector 7 is connected to the connecting pipe orifice 4 by a threaded connection. A movable groove is provided inside the slurry outlet base 9. The specification of the movable groove matches that of the movable seat 12, and the two can be fitted and slidably connected. The movable seat 12 is equal in size to the slurry outlet 13 provided inside the slurry outlet base 9. This design enables the movable seat 12 to overlap with the slurry outlet 13 of the slurry outlet base 9 through the fitting and sliding connection between the movable groove and the movable seat 12, so that the slurry can be exposed from the slurry outlet 13.

[0023] The inclined pipe 3, the connecting head 7, the connecting pipe mouth 4, the corrugated pipe 8, the slurry discharge base 9, the slurry discharge port 13 and the movable seat 12 constitute a slurry discharge assembly. There are six groups of slurry discharge assemblies. The six groups of slurry discharge assemblies have the same composition structure and are symmetrically arranged on the left and right sides of the grouting pipe 1. This design can increase the slurry discharge speed by discharging slurry through the six groups of slurry discharge assemblies at the same time.

[0024] As the second embodiment of the utility model: when the constructor needs to change the height of the slurry discharge base 9, the fastening bolt is loosened at this time so that the fastening bolt leaves the fastening threaded hole 2. At this time, the circular hole 14 is slidably connected with the grouting pipe 1, so that the adjustment base 6 can be adjusted up and down in height. After the adjustment is completed, the fastening bolt is tightened again, and mud is poured into the grouting pipe 1. The mud reaches the corrugated pipe 8 through the inclined pipe 3 and then reaches the inside of the movable seat 12. The mud applies gravity to the movable seat 12, so that the reset spring 11 is compressed. At this time, the movable groove and the movable seat 12 are slidably connected, so that the movable seat 12 and the slurry outlet 13 of the slurry discharge base 9 can overlap. At this time, the mud is exposed from the slurry outlets 13 of both, and the foundation pit is poured with mud.

[0025] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A grouting device for a foundation pit karst area, comprising a grouting pipe, an L-shaped support frame, an adjustment base, a bellows, a connecting rod, a return spring, a movable seat and a circular hole, characterized in that: The outer side of the annular surface of the grouting pipe is sleeved with an adjustment base, a circular hole is opened inside the adjustment base and is closely connected with the grouting pipe, fastening threaded holes are opened inside the adjustment base and the grouting pipe, and the left and right end surfaces of the grouting pipe are both provided with inclined pipes, and the tail end of the inclined pipe is fixed with a connecting pipe port; The connecting pipe mouth is fitted and connected by a connecting head, and a bellows is arranged at the tail end of the connecting head. L-shaped support frames are installed on both end surfaces of the left and right sides of the adjusting base, and a slurry outlet base is installed on the lower end surface of the L-shaped support frame. A connecting rod is installed between the slurry outlet bases, and a movable seat is movably connected inside the slurry outlet base. Slurry outlets are opened inside the movable seat and the slurry outlet base, and a reset spring is arranged between the movable seat and the slurry outlet base.

2. A grouting device for a foundation pit karst area according to claim 1, characterized in that: The adjustment base is fixed by a fastening bolt, the outer diameter of the fastening bolt is equal to the inner diameter of the fastening threaded hole, and the two can be fitted and rotatably connected.

3. A grouting device for karst areas of foundation pits according to claim 1, characterized in that: The inner diameter of the circular hole is equal to the outer diameter of the grouting pipe, and the two can fit and slide in connection.

4. A grouting device for a foundation pit karst area according to claim 1, characterized in that: The connector is connected to the connecting pipe opening via threads.

5. The grouting device for karst area of ​​foundation pit according to claim 1, characterized in that: A movable groove is provided inside the slurry discharge base, the specification of the movable groove matches the specification of the movable seat, and the two can be fitted and slidably connected, and the slurry discharge opening provided in the movable seat and the slurry discharge base are equal in size.

6. The grouting device for karst areas of foundation pits according to claim 1, characterized in that: The inclined pipe, connector, connecting pipe port, bellows, slurry outlet base, slurry outlet port and movable seat constitute a slurry outlet assembly. Six groups of slurry outlet assemblies are provided. The six groups of slurry outlet assemblies have the same composition structure and are symmetrically arranged on the left and right sides of the grouting pipe.

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