Building crack repairing device

Abstract

The utility model provides a building crack repairing device which comprises a grouting needle tube, a thin tube is installed at one end of the grouting needle tube, a tube cap is connected to the end, away from the thin tube, of the grouting needle tube in a threaded mode, a piston is installed in the grouting needle tube in a sliding mode, and a connecting rod is fixedly connected to the middle of the upper surface of the piston. The end, away from the piston, of the connecting rod is fixedly connected with a grabbing rod, external threads are machined on the outer surface of the upper end of the piston, internal threads matched with the external threads are machined on the upper portion in the grouting needle tube, the connecting rod is sleeved with a spring, and the spring is arranged between the piston and the tube cap. A pipe cap is arranged on the connecting rod, a grabbing rod is arranged on the pipe cap, a threaded rod used for abutting against the pipe cap is connected to the grabbing rod in a threaded mode, the threaded rod and the connecting rod are arranged in parallel, and a handle is fixedly connected to the upper end of the threaded rod The grouting needle tube has the advantages that labor is saved when the grouting needle tube is used for extracting building crack repairing slurry, and labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building crack repair, in particular to a building crack repair device. Background Art

[0002] Pressure grouting is one of the building crack repair methods. A proper amount of building crack repair slurry is sucked by using a grouting needle tube. A piston with a gripping rod is slidably installed in the grouting needle tube. During the grouting process, the area around the crack is first cleaned, and then the grouting base is adhered to the crack with glue, so that the glue outlet of the grouting base faces the crack, and the cap on the grouting needle tube is inserted into the grouting base. The building crack repair slurry in the grouting needle tube can be injected into the crack by squeezing. Because the cap and the grouting base are relatively thin, it is impossible to directly apply pressure to the piston manually. Therefore, a spring is installed in the grouting needle tube so that the spring is between the piston and the pipe cap. An external thread is processed on the piston, and an internal thread is processed near the pipe cap in the grouting needle tube. After the piston is threadedly connected to the grouting needle tube, the spring is in a compressed state. When the capillary tube is connected to the grouting base, the piston is separated from the area where the internal thread is processed on the grouting needle tube. Under the action of the spring rebound force, the piston automatically squeezes the building crack repair slurry in the grouting needle tube. The above structure has the following shortcomings: when using the grouting needle tube to extract the building crack repair slurry, personnel are required to pull the piston to overcome the rebound force of the spring and move the piston to the area where the internal thread is processed on the grouting needle tube. In this way, the operator needs to always overcome the rebound force of the spring, which is labor-intensive. Utility Model Content

[0003] The purpose of the present invention is to provide a building crack repair device to solve the problems raised in the above-mentioned background technology. The present invention uses a grouting needle to extract building crack repair slurry to achieve the effect of saving labor and reducing labor intensity.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a building crack repair device, comprising a grouting needle tube, wherein a cap is installed at one end of the grouting needle tube, and the end of the grouting needle tube away from the cap is threadedly connected to a pipe cap, and a circular opening is opened in the middle position of the upper surface of the pipe cap, a piston is slidably installed in the grouting needle tube, and a connecting rod is connected and fixed at the middle position of the upper surface of the piston, and the end of the connecting rod away from the piston passes through the circular opening and extends to the outside of the grouting needle tube, and the end of the connecting rod away from the piston is connected and fixed to a grasping rod, the outer surface of the upper end of the piston is processed with an external thread, and the upper position of the grouting needle tube is processed with an internal thread matching the external thread, the connecting rod is sleeved with a spring, and the spring is arranged between the piston and the pipe cap, and the gripping rod is threadedly connected to a threaded rod for supporting the pipe cap, the threaded rod is arranged parallel to the connecting rod, and the upper end of the threaded rod is connected and fixed with a handle.

[0005] As a further improvement to the technical solution of the present invention, a bull's eye is connected and fixed to the end of the threaded rod away from the handle, an annular protrusion is connected and fixed to the upper surface of the tube cap, and the ball portion of the bull's eye is in contact with the annular protrusion.

[0006] As a further improvement to the technical solution of the present invention, a through hole is provided on the gripping rod, a straight threaded barrel is inserted into the through hole, a positioning screw for limiting the relative position of the gripping rod and the straight threaded barrel is threadedly connected to the outer surface of the gripping rod, and the threaded rod is threadedly connected in the straight threaded barrel.

[0007] As a further improvement to the technical solution of the present invention, a small hole is opened on the outer surface of the gripping rod, the small hole is communicated with the through hole, an internal threaded sleeve is connected and fixed in the small hole, and the positioning screw is threadedly connected in the internal threaded sleeve.

[0008] As a further improvement to the technical solution of the present invention, a blind hole is provided on the outer surface of the straight threaded barrel, and one end of the positioning screw extends into the blind hole.

[0009] As a further improvement to the technical solution of the present utility model, a plurality of convex ribs are fixed in an annular shape at equal intervals on the outer surface of the pipe cap, and the convex ribs and the pipe cap are an integrally formed structure.

[0010] The utility model has the following beneficial effects:

[0011] 1. Before using the grouting needle to extract the building crack repair slurry, screw the threaded rod into the straight thread barrel, and use the positioning screw to limit the relative position of the straight thread barrel and the gripping rod to complete the assembly of the threaded rod and the gripping rod. Use the handle to rotate the threaded rod so that the threaded rod rests on the pipe cap. In the process of rotating the threaded rod, the piston moves toward the pipe cap. There is no need for personnel to always overcome the rebound force of the spring when extracting the building crack repair slurry, thereby reducing labor intensity.

[0012] 2. Use the positioning screw to install the straight thread barrel on the grasping rod. On the one hand, it is convenient for disassembly and assembly of the threaded rod and the grasping rod. On the other hand, there is no need to process threaded holes on the grasping rod to match the threaded rod. When the threads inside the straight thread barrel are damaged, the straight thread barrel can be replaced. After loosening the positioning screw, the straight thread barrel is separated from the grasping rod, thereby not affecting the separation and threaded connection of the piston and the internal threaded part of the grouting needle tube.

[0013] 3. Install the bull's eye on the threaded rod and make the ball bearing part of the bull's eye contact with the annular protrusion on the pipe cap. When the threaded rod is rotated, the probability of relative sliding between the ball bearing part of the bull's eye and the annular protrusion is reduced, thereby reducing the wear on the pipe cap. At the same time, the design of the annular protrusion increases the thickness of the contact part between the pipe cap and the bull's eye, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 This is a structural diagram of a building crack repair device of the utility model;

[0016] Figure 2 This is a three-dimensional diagram of a building crack repair device according to the utility model from another perspective;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is an explosion diagram of a building crack repair device of the utility model;

[0019] Figure 5 This is a schematic diagram of the assembly of a piston, a spring, a connecting rod and a gripping rod in a building crack repair device of the utility model;

[0020] Figure 6 This is a three-dimensional diagram of a straight thread barrel in a building crack repair device of the utility model;

[0021] Figure 7 This is a three-dimensional diagram of a pipe cap in a building crack repair device according to the present utility model.

[0022] In the accompanying drawings: 1- grouting needle, 2- pipe cap, 3- straight threaded barrel, 4- handle, 5- threaded rod, 6- gripping rod, 7- annular protrusion, 8- connecting rod, 9- thin tube, 10- convex rib, 11- internal threaded sleeve, 12- positioning screw, 13- bull's eye, 14- spring, 15- piston, 16- perforation, 17- small hole, 18- blind hole. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In this utility model, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one such feature. Furthermore, the technical solutions of various embodiments may be combined with each other, but only on the basis that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions contradicts or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] See also Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 7The utility model provides a technical solution: a building crack repair device, including a grouting needle tube 1, a thin tube 9 is installed at one end of the grouting needle tube 1, and the end of the grouting needle tube 1 away from the thin tube 9 is threadedly connected to a pipe cap 2, and a round opening is opened in the middle position of the upper surface of the pipe cap 2. A piston 15 is slidably installed in the grouting needle tube 1, and a connecting rod 8 is connected and fixed at the middle position of the upper surface of the piston 15. The end of the connecting rod 8 away from the piston 15 passes through the round opening and extends to the outside of the grouting needle tube 1. The end of the connecting rod 8 away from the piston 15 is connected and fixed to a gripping rod 6. The outer surface of the upper end of the piston 15 is processed with an external thread, and the upper position of the grouting needle tube 1 is processed with an internal thread matching the external thread. A spring 14 is sleeved on the connecting rod 8, and the spring 14 is arranged on the piston 1 5 and the pipe cap 2, so that the piston 15 is threadedly connected to the area of ​​the grouting needle tube 1 where the internal thread is processed, so that the relative position of the piston 15 and the grouting needle tube 1 remains unchanged, and after the cap 9 is inserted into the grouting base adhered to the crack, the structure formed by the grasping rod 6 and the connecting rod 8 is used to rotate the piston 15, so that the piston 15 is separated from the area of ​​the grouting needle tube 1 where the internal thread is processed, and then under the action of the rebound force of the spring 14, the piston 15 squeezes the building crack repair slurry in the grouting needle tube 1, so that the building crack repair slurry enters the crack. The outer surface of the pipe cap 2 is annularly and equidistantly fixed with multiple ribs 10, which are an integrally formed structure with the pipe cap 2. The ribs 10 increase the friction coefficient of the surface of the pipe cap 2, making it easier to twist the pipe cap 2.

[0029] See Figure 1-Figure 7, a threaded rod 5 is threadedly connected to the grasping rod 6 for resting on the pipe cap 2 and arranged parallel to the connecting rod 8, wherein a through-hole 16 is provided on the grasping rod 6, and a straight threaded tube 3 is inserted in the through-hole 16. A positioning screw 12 is threadedly connected to the outer surface of the grasping rod 6 for limiting the relative position of the grasping rod 6 and the straight threaded tube 3. A small hole 17 is provided on the outer surface of the grasping rod 6, and the small hole 17 is communicated with the through-hole 16. An internal threaded sleeve 11 is connected and fixed in the small hole 17, and the positioning screw 12 is threadedly connected in the internal threaded sleeve 11. A blind hole 18 is provided on the outer surface of the straight threaded tube 3, and one end of the positioning screw 12 extends into the blind hole 18. The threaded rod 5 is threadedly connected in the straight threaded tube 3, and a handle 4 is connected and fixed to the upper end of the threaded rod 5. Before using the grouting needle 1 to extract the building crack repair slurry, the threaded rod 5 is screwed into the straight threaded tube 3, and the positioning screw 1 is used to 2 limits the relative position of the straight threaded barrel 3 and the gripping rod 6 to complete the assembly of the threaded rod 5 and the gripping rod 6, and uses the handle 4 to rotate the threaded rod 5 so that the threaded rod 5 rests on the pipe cap 2, so that in the process of rotating the threaded rod 5, the piston 15 moves in the direction close to the pipe cap 2, and there is no need for personnel to always overcome the rebound force of the spring 14 when extracting the building crack repair slurry, thereby reducing labor intensity. The straight threaded barrel 3 is installed on the gripping rod 6 using the positioning screw 12, which, on the one hand, facilitates the disassembly and assembly of the threaded rod 5 and the gripping rod 6, and on the other hand, does not need to be processed on the gripping rod 6 to match the threaded rod 5. When the thread in the straight threaded barrel 3 is damaged, the straight threaded barrel 3 can be replaced. After loosening the positioning screw 12, the straight threaded barrel 3 is separated from the gripping rod 6, thereby not affecting the separation and threaded connection of the piston 15 and the internal threaded portion processed by the grouting needle tube 1.

[0030] See Figure 1 、 Figure 2 、 Figure 3 and Figure 7 The end of the threaded rod 5 away from the handle 4 is connected and fixed with a bull's eye ball 13, and the upper surface of the pipe cap 2 is connected and fixed with an annular protrusion 7. The ball rolling part of the bull's eye ball 13 is in contact with the annular protrusion 7. The bull's eye ball 13 is installed on the threaded rod 5, and the ball rolling part of the bull's eye ball 13 is in contact with the annular protrusion 7 on the pipe cap 2. When the threaded rod 5 is rotated, the probability of relative sliding between the ball rolling part of the bull's eye ball 13 and the annular protrusion 7 is reduced, thereby reducing the wear on the pipe cap 2. At the same time, the design of the annular protrusion 7 increases the thickness of the contact part between the pipe cap 2 and the bull's eye ball 13, thereby extending the service life.

[0031] Beneficial effects of the utility model:

[0032] 1. Before using the grouting needle to extract the building crack repair slurry, screw the threaded rod into the straight thread barrel, and use the positioning screw to limit the relative position of the straight thread barrel and the gripping rod to complete the assembly of the threaded rod and the gripping rod. Use the handle to rotate the threaded rod so that the threaded rod rests on the pipe cap. In the process of rotating the threaded rod, the piston moves toward the pipe cap. There is no need for personnel to always overcome the rebound force of the spring when extracting the building crack repair slurry, thereby reducing labor intensity.

[0033] 2. Use the positioning screw to install the straight thread barrel on the grasping rod. On the one hand, it is convenient for disassembly and assembly of the threaded rod and the grasping rod. On the other hand, there is no need to process threaded holes on the grasping rod to match the threaded rod. When the threads inside the straight thread barrel are damaged, the straight thread barrel can be replaced. After loosening the positioning screw, the straight thread barrel is separated from the grasping rod, thereby not affecting the separation and threaded connection of the piston and the internal threaded part of the grouting needle tube.

[0034] 3. Install the bull's eye on the threaded rod and make the ball bearing part of the bull's eye contact with the annular protrusion on the pipe cap. When the threaded rod is rotated, the probability of relative sliding between the ball bearing part of the bull's eye and the annular protrusion is reduced, thereby reducing the wear on the pipe cap. At the same time, the design of the annular protrusion increases the thickness of the contact part between the pipe cap and the bull's eye, thereby extending the service life.

[0035] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A building crack repair device, characterized by: The grouting needle tube includes a thin tube installed at one end of the grouting needle tube, and the end of the grouting needle tube away from the thin tube is threadedly connected to a pipe cap, and a circular opening is opened in the middle position of the upper surface of the pipe cap, and a piston is slidably installed in the grouting needle tube, and a connecting rod is connected and fixed at the middle position of the upper surface of the piston, and the end of the connecting rod away from the piston passes through the circular opening and extends to the outside of the grouting needle tube, and the end of the connecting rod away from the piston is connected and fixed to a gripping rod, the outer surface of the upper end of the piston is processed with an external thread, and the upper position of the grouting needle tube is processed with an internal thread matching the external thread, a spring is sleeved on the connecting rod, and the spring is arranged between the piston and the pipe cap, and a threaded rod for supporting the pipe cap is threadedly connected to the gripping rod, the threaded rod is arranged parallel to the connecting rod, and a handle is connected and fixed to the upper end of the threaded rod.

2. A building crack repair device according to claim 1, characterized in that: A bull's eye is connected and fixed to one end of the threaded rod away from the handle, an annular protrusion is connected and fixed to the upper surface of the tube cap, and the ball rolling part of the bull's eye is in contact with the annular protrusion.

3. A building crack repair device according to claim 1, characterized in that: The gripping rod is provided with a through hole, a straight threaded barrel is inserted into the through hole, the outer surface of the gripping rod is threadedly connected with a positioning screw for limiting the relative position of the gripping rod and the straight threaded barrel, and the threaded rod is threadedly connected in the straight threaded barrel.

4. A building crack repair device according to claim 3, characterized in that: A small hole is opened on the outer surface of the gripping rod, the small hole is communicated with the through hole, an internal thread sleeve is connected and fixed in the small hole, and the positioning screw is threadedly connected in the internal thread sleeve.

5. A building crack repair device according to claim 3, characterized in that: A blind hole is formed on the outer surface of the straight threaded cylinder, and one end of the positioning screw extends into the blind hole.

6. A building crack repair device according to claim 1, characterized in that: The outer surface of the pipe cap is annularly and equidistantly fixed with a plurality of convex ribs, and the convex ribs and the pipe cap are an integrally formed structure.

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