CN220352786U - Grouting assembly - Google Patents

Abstract

The utility model discloses a grouting assembly, relates to the technical field of grouting, and solves the problems that in the existing grouting reinforcement technology, large resistance exists in the jacking process of a grouting pipe, difficulty is brought to jacking of the grouting pipe, and inconvenience is brought to constructors. The utility model comprises a jacking pipe, a plurality of extension pipes and a jacking assembly, wherein the lower end of the jacking pipe is provided with a conical drill bit, the outer surface of the conical drill bit is provided with a first threaded section, the upper end of the jacking pipe and the upper end of the extension pipe are respectively provided with a first connecting cylinder and a second connecting cylinder, the outer diameters of the first connecting cylinder and the second connecting cylinder are respectively smaller than the outer diameters of the jacking pipe and the extension pipe, the first connecting cylinder and the second connecting cylinder are in threaded connection with the jacking assembly, the threaded direction is the same as that of the first threaded section, the lower end of the extension pipe is in threaded connection with the first connecting cylinder, the pipe walls of the jacking pipe and the extension pipe are respectively provided with a plurality of grouting holes, and the jacking assembly is provided with a jacking handle. According to the utility model, the soil layer is loosened, so that the jacking resistance is reduced, and the construction is convenient.

Description

Grouting assembly

Technical Field

The utility model belongs to the technical field of grouting, and particularly relates to a grouting assembly.

Background

Along with the rapid development of national economy in China, the construction of expressways in China is developed like spring bamboo shoots after rain, however, in the use process, phenomena of crack, plate bottom void, subsidence and the like occur frequently due to subsidence of the ground surface, and great social potential safety hazards are brought to the expressways by the engineering disasters.

The grouting reinforcement technology is used as one of the main technical means for managing engineering disasters, and after the injected slurry is hardened under the plate, the continuity of the plate body and the base layer can be recovered, the stress state of the plate body is effectively improved, and the grouting reinforcement technology has the advantages of rapidness, convenience, economy, practicability, small influence on traffic and the like, and is also applied to repairing diseases of the road base layer.

The conventional grouting reinforcement technology is to reinforce the roadbed through a grouting assembly, the grouting assembly generally comprises a grouting pipe and a gravity hammer, the grouting pipe is driven into the settlement roadbed through the gravity hammer during operation, grouting is carried out through a high-pressure grouting machine, cement slurry is spread into the roadbed through holes in the grouting pipe, the roadbed is reinforced after the cement slurry is dried, and the grouting pipe is driven into the roadbed to have extremely large resistance, the grouting pipe is driven into the roadbed to ensure that grouting of the roadbed is firm only by dozens of meters, the grouting pipe is required to have enough length, but the road construction has high limit, so the grouting pipe is generally manufactured into a shorter length convenient to construct, the grouting depth is achieved through continuous connection of one section, although the grouting depth can be carried out on the roadbed in the prior art, but the depth of the pre-drilled hole cannot reach the grouting depth, so the grouting pipe still needs to overcome large resistance, difficulty is brought to the jacking of the grouting pipe, and great inconvenience is brought to constructors.

Disclosure of Invention

The utility model discloses a grouting assembly, which aims to solve the technical problems that in the existing grouting reinforcement technology, large resistance exists in the jacking process of a grouting pipe, difficulty is brought to jacking of the grouting pipe, and inconvenience is brought to constructors.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a slip casting subassembly, includes slip casting pipe and jacking subassembly, the slip casting pipe is including jacking pipe and several extension pipe, the lower extreme of jacking pipe is equipped with the toper drill bit, the surface of toper drill bit is equipped with first screw thread section, the upper end of jacking pipe and the upper end of extension pipe are equipped with first connecting cylinder and second connecting cylinder respectively, the external diameter of first connecting cylinder is less than the external diameter of jacking pipe, the external diameter of second connecting cylinder is less than the external diameter of extension pipe, first connecting cylinder and second connecting cylinder all are the same with jacking subassembly threaded connection and screw thread direction and first screw thread section, the lower extreme and the first connecting cylinder threaded connection of extension pipe, all seted up the several slip casting hole on the pipe wall of jacking pipe and extension pipe, be equipped with the jacking handle on the jacking subassembly.

The specific working principle of the technical scheme is as follows:

when the roadbed is reinforced, the grouting position is pre-drilled, the jacking pipe stretches into the pre-drilled hole to be stable, the jacking component is screwed on the first connecting cylinder on the jacking pipe, the jacking pipe is screwed on the first connecting cylinder, the jacking component is driven to rotate towards the screwing direction after screwing, the conical drill bit below the jacking pipe is driven to rotate along the screw thread direction, the roadbed soil layer around the conical drill bit is dispersed and loosened, the resistance of the roadbed soil layer to the jacking pipe is reduced, the jacking pipe is enabled to tunnel downwards more easily, when the jacking pipe is driven into a foundation to the position where the upper end of the jacking pipe is low, the jacking pipe is clamped, the jacking component is screwed down in a reverse direction, the screw thread of the jacking pipe is arranged at the upper end of the jacking pipe, welding is applied to enable the jacking pipe and the jacking pipe to be firmly connected, loosening is avoided, then the jacking component is screwed on the second connecting cylinder arranged on the jacking pipe, the jacking pipe is enabled to rotate in the same direction, the jacking pipe and the grouting machine is enabled to draw down to be high, and the grouting machine is driven down to the position where the jacking pipe is high, and the grouting machine is driven down to the position where the grouting machine is high. According to the utility model, the grouting pipe is rotated through the jacking handle, the conical drill bit below the jacking pipe is driven to rotate, tunneling is carried out downwards, the resistance of a road foundation soil layer to the grouting pipe is reduced, the jacking difficulty of the grouting pipe is reduced, and the grouting pipe is convenient for constructors to use.

In a further technical scheme, the jacking component comprises a sleeve, the first connecting cylinder and the second connecting cylinder can be in threaded connection with the sleeve, the number of the jacking handles is two, and the two jacking handles are symmetrically arranged on two sides of the sleeve.

In the scheme, the specifications of the first connecting cylinder and the second connecting cylinder are the same, the sleeve is in threaded connection with the first connecting cylinder and the second connecting cylinder, the sleeve is convenient to install, detach and replace, and the jacking handles on the two sides of the sleeve can be rotated conveniently, so that the sleeve is beneficial to use.

In a further technical scheme, telescopic inside is equipped with first internal thread, be equipped with first external screw thread and the second external screw thread with first internal screw thread assorted on the lateral wall of first connecting cylinder and the lateral wall of second connecting cylinder respectively, the lower extreme of extension pipe is equipped with first external screw thread assorted second internal screw thread.

In the scheme, the first external thread and the second external thread on the outer side wall of the first connecting cylinder and the outer side wall of the second connecting cylinder are identical in specification, the first external thread is matched with the first internal thread in the sleeve, the use is convenient, the second internal thread at the lower end of the extension pipe is matched with the first external thread, and the extension pipe and the jacking pipe can be connected conveniently due to the fact that the first external thread and the second external thread are identical in specification, and connection between the extension pipe can be facilitated.

In a further technical scheme, the pipe walls of the jacking pipe and the lengthening pipe are respectively provided with a second thread section and a third thread section, and the thread directions of the second thread section and the third thread section are the same as those of the first thread section.

In the scheme, the second thread section and the third thread section on the pipe wall of the jacking pipe and the lengthening pipe can disperse the roadbed soil layer in the drilling process, so that the jacking difficulty of the grouting pipe is further reduced.

In a further technical scheme, at least two grouting holes which are in central symmetry with the center of the cross section of the extension tube are arranged below the first connecting cylinder, and at least two grouting holes which are in central symmetry with the center of the cross section of the extension tube are arranged below the second connecting cylinder.

In the scheme, through two grouting holes which are arranged below the first connecting cylinder and are in central symmetry with the center of the cross section of the jacking pipe, a straight-section rigid material rod can penetrate through the grouting holes when the sleeve is unscrewed, the straight-section rigid material rod can be a reinforcing steel bar, when the sleeve is unscrewed, another constructor applies force to the straight-section rigid material rod to clamp, the jacking pipe is prevented from being driven by the sleeve to unscrew, and the extension pipe and the second connecting cylinder are also identical.

In a further technical scheme, the conical drill bit is detachably connected with the jacking pipe.

In the scheme, the conical drill bit is detachably connected with the jacking pipe, and after the conical drill bit is used for multiple times, the conical drill bit or the jacking pipe can be replaced after being worn too much to affect the use, so that the conical drill bit is convenient to use.

In a further technical scheme, the conical drill bit is in threaded connection with the lower end of the jacking pipe, a third connecting cylinder is arranged at the upper end of the conical drill bit, the outer diameter of the third connecting cylinder is smaller than the outer diameter of the uppermost end of the conical drill bit, a third external thread is arranged on the third connecting cylinder, and a third internal thread matched with the third external thread is arranged at the lower end of the jacking pipe.

In the scheme, after the third external thread on the third connecting cylinder is in threaded connection with the third internal thread at the lower end of the jacking pipe, the drilling effect is prevented from being influenced by loosening during use through welding.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. according to the utility model, the jacking handles on the two sides of the jacking assembly sleeve are rotated, so that the first threaded section on the conical drill bit, the second threaded section on the jacking pipe and the third threaded section on the extension pipe rotate along the threaded direction, the grouting pipe is drilled downwards, the foundation soil layer around the grouting pipe is dispersed and loosened by rotation, the resistance of the foundation soil layer to the jacking pipe is reduced, the jacking pipe is more easily tunneled downwards, and the grouting pipe is convenient for constructors to use.

2. According to the utility model, the first connecting cylinder and the second connecting cylinder are set to be the same in specification, and the first external screw thread and the second external screw thread are also the same in specification, so that the connection of the jacking pipe and the extension pipe and the connection of the extension pipe and the extension pipe are facilitated through the unified specification.

3. The conical drill bit and the jacking cylinder are detachable, and after the conical drill bit or the jacking pipe is worn for a plurality of times to affect the use, the conical drill bit or the jacking pipe can be replaced, so that the conical drill bit or the jacking pipe is beneficial to the use.

Drawings

The utility model will now be described by way of example and with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of an explosive structure of the present utility model;

FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged partial schematic view at B in FIG. 1;

fig. 4 is an enlarged partial schematic view at C in fig. 1.

Reference numerals: 1-jacking pipe, 2-extension pipe, 3-cone drill bit, 4-first screw thread section, 5-first connecting cylinder, 6-second connecting cylinder, 7-grouting hole, 8-jacking handle, 9-sleeve, 10-first internal thread, 11-first external thread, 12-second external thread, 13-second internal thread, 14-second screw thread section, 15-third screw thread section, 16-third connecting cylinder, 17-third external thread, 18-third internal thread.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application and the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.

In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of description and simplicity of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

The present utility model is described in detail below with reference to fig. 1-4.

Example 1:

this embodiment provides a grouting assembly, refer to fig. 1, including slip casting pipe and jacking subassembly, the slip casting pipe is including jacking pipe 1 and a plurality of extension pipe 2, the lower extreme of jacking pipe 1 is equipped with toper drill bit 3, refer to fig. 2, the surface of toper drill bit 3 is equipped with the right height, right-handed first screw section 4 promptly, the welding has first connecting cylinder 5 and second connecting cylinder 6 respectively to establish the upper end of jacking pipe 1 and the upper end of extension pipe 2, the external diameter of first connecting cylinder 5 is less than the external diameter of jacking pipe 1, the external diameter of second connecting cylinder 6 is less than the external diameter of extension pipe 2, first connecting cylinder 5 and second connecting cylinder 6 all are with jacking subassembly threaded connection and screw thread direction is the same with first screw section 4, promptly install and screw down when screwing up, a plurality of grout hole 7 have all been seted up on the pipe wall of extension pipe 2 on jacking pipe 1 and extension pipe 2, be equipped with on the jacking subassembly. Specifically, after the jacking component is screwed up on the first connecting cylinder 5 or the second connecting cylinder 6 clockwise, the jacking component is limited by the upper edge of the jacking pipe 1 or the lengthening pipe 2, the jacking component is continuously screwed clockwise, the jacking pipe 1 or the lengthening pipe 2 is driven to rotate clockwise, the conical rotating head is further rotated, the first thread section 4 on the conical rotating head continuously disperses and loosens surrounding soil layers, and the jacking difficulty is reduced.

In this embodiment, referring to fig. 3 and 4, the jacking component includes a sleeve 9, the number of jacking handles 8 is two, the two jacking handles 8 are symmetrically disposed on two sides of the sleeve 9, a first internal thread 10 is disposed in the sleeve 9, a first external thread 11 and a second external thread 12 matched with the first internal thread 10 are disposed on an outer side wall of the first connecting tube 5 and an outer side wall of the second connecting tube 6 respectively, the first connecting tube 5 and the second connecting tube 6 can be in threaded connection with the sleeve 9, and a second internal thread 13 matched with the first external thread 11 is disposed at a lower end of the extension tube 2. Specifically, the pushing handle 8 may be rotated not only manually, but also by a machine; the first connecting cylinder 5 and the second connecting cylinder 6 are manufactured to be identical in specification, and the first external screw thread 11 and the second external screw thread 12 on the first connecting cylinder are identical in specification, so that the extension pipe 2 and the jacking pipe 1 can be conveniently connected, and the connection between the extension pipes 2 can be also facilitated.

The specific working principle of the embodiment is as follows:

when the roadbed is reinforced, pre-drilling is carried out on the grouting position, after the jacking pipe 1 stretches into the pre-drilling hole to be stable, the jacking pipe 1 is clamped, the sleeve 9 is screwed on the first connecting cylinder 5 on the jacking pipe 1 clockwise through the jacking handle 8, the sleeve 9 is continuously rotated clockwise by using the jacking handle 8, the jacking pipe 1 and the conical drill bit 3 at the lower end of the jacking pipe 1 are driven to rotate clockwise, and further the first thread section 4 on the conical drill bit 3 is continuously dispersed and loosened to surrounding soil layers by rotating clockwise, so that the downward jacking difficulty is reduced; when the jacking pipe 1 is driven into the foundation until the height of the upper end of the jacking pipe 1 is low, and the operation is inconvenient, the jacking handle 8 is screwed anticlockwise to take down the sleeve 9 by clamping the jacking pipe 1, the extension pipe 2 is screwed and installed on the first connecting cylinder 5 of the jacking pipe 1 through the second internal thread 13 at the lower end of the extension pipe 2, then welding is carried out at the joint of the jacking pipe 1 and the extension pipe 2, loosening during jacking is avoided, the sleeve 9 is installed on the second connecting cylinder 6 on the extension pipe 2 in the same way, the grouting pipe is continuously pushed downwards by rotating the jacking handle 8 clockwise, and when the extension pipe 2 is driven into the foundation until the height of the upper end of the jacking pipe 1 is low, the extension pipe 2 is additionally installed in the same operation until the grouting depth is continuously pushed, grouting can be carried out in the grouting pipe through a high-pressure grouting machine, and roadbed is further reinforced.

Example 2:

the present embodiment is optimized based on embodiment 1, in this embodiment, referring to fig. 1, the walls of the jacking pipe 1 and the extension pipe 2 are respectively provided with a second thread section 14 and a third thread section 15, and the thread directions of the second thread section 14 and the third thread section 15 are the same as those of the first thread section 4.

Specifically, the second thread section 14 and the third thread section 15 on the pipe walls of the jacking pipe 1 and the lengthening pipe 2 can disperse and loosen the roadbed soil layer in the drilling process, so that the jacking difficulty of the grouting pipe is further reduced.

In this embodiment, two grouting holes 7 with center symmetry about the center of the cross section of the jacking pipe 1 are provided below the first connecting cylinder 5, and two grouting holes 7 with center symmetry about the center of the cross section of the extension pipe 2 are also provided below the second connecting cylinder 6.

Specifically, through two grouting holes 7 of center symmetry with the centre of a circle of jacking pipe 1 cross section in first connecting cylinder 5 below, can pass grouting hole 7 with the reinforcing bar when unscrewing sleeve 9, another constructor is exerted force to the reinforcing bar and is pressed from both sides tightly, avoids jacking pipe 1 to be driven by sleeve 9 and unscrews, and extension pipe 2 and second connecting cylinder 6 are the same.

Example 3:

in this embodiment, referring to fig. 2, the conical drill bit 3 is in threaded connection with the lower end of the jacking pipe 1, the upper end of the conical drill bit 3 is provided with a third connecting cylinder 16, the outer diameter of the third connecting cylinder 16 is smaller than the outer diameter of the uppermost end of the conical drill bit 3, the third connecting cylinder 16 is provided with a third external thread 17, and the lower end of the jacking pipe 1 is provided with a third internal thread 18 matched with the third external thread 17.

Specifically, through third external screw thread 17 and third internal screw thread 18, with toper drill bit 3 and jacking pipe 1 threaded connection, it is not hard up when welding avoids using after the installation, after repetitious usage, toper drill bit 3 or jacking pipe 1 wearing and tearing too big influence use, can cut the welded part, change toper drill bit 3 or jacking pipe 1 of wearing and tearing, facilitate the use.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a slip casting subassembly, its characterized in that, includes slip casting pipe and jacking subassembly, slip casting pipe is including jacking pipe (1) and several extension pipe (2), the lower extreme of jacking pipe (1) is equipped with toper drill bit (3), the surface of toper drill bit (3) is equipped with first screw thread section (4), the upper end of jacking pipe (1) and the upper end of extension pipe (2) are equipped with first connecting cylinder (5) and second connecting cylinder (6) respectively, the external diameter of first connecting cylinder (5) is less than the external diameter of jacking pipe (1), the external diameter of second connecting cylinder (6) is less than the external diameter of extension pipe (2), first connecting cylinder (5) and second connecting cylinder (6) all are the same with jacking subassembly threaded connection and screw thread direction and first screw thread section (4), the lower extreme of extension pipe (2) and first connecting cylinder (5) threaded connection, jacking pipe (1) and extension pipe's pipe wall upper end are last to be equipped with grout and are all equipped with jack-in hole (8), jack-in number (8) are equipped with on the slip casting subassembly.

2. Grouting assembly according to claim 1, characterized in that the jacking assembly comprises a sleeve (9), the first connecting cylinder (5) and the second connecting cylinder (6) are both in threaded connection with the sleeve (9), the number of the jacking handles (8) is two, and the two jacking handles (8) are symmetrically arranged on two sides of the sleeve (9).

3. Grouting assembly according to claim 2, characterized in that the sleeve (9) is internally provided with a first internal thread (10), the outer side wall of the first connecting cylinder (5) and the outer side wall of the second connecting cylinder (6) are respectively provided with a first external thread (11) and a second external thread (12) which are matched with the first internal thread (10), and the lower end of the extension tube (2) is provided with a second internal thread (13) which is matched with the first external thread (11).

4. A grouting assembly as claimed in any one of claims 1 to 3, characterised in that the walls of the jacking pipe (1) and the extension pipe (2) are provided with a second thread section (14) and a third thread section (15), respectively, the second thread section (14) and the third thread section (15) being of the same thread direction as the first thread section (4).

5. A grouting assembly as claimed in any one of claims 1-3, characterised in that at least two grouting holes (7) are arranged below the first connecting cylinder (5) and are centrosymmetric with respect to the centre of the cross section of the jacking pipe (1), and at least two grouting holes (7) are arranged below the second connecting cylinder (6) and are centrosymmetric with respect to the centre of the cross section of the extension pipe (2).

6. A grouting assembly as claimed in any one of claims 1 to 3, characterised in that the cone drill bit (3) is detachably connected to the jacking pipe (1).

7. The grouting assembly according to claim 6, wherein the conical drill bit (3) is in threaded connection with the lower end of the jacking pipe (1), a third connecting cylinder (16) is arranged at the upper end of the conical drill bit (3), the outer diameter of the third connecting cylinder (16) is smaller than the outer diameter of the uppermost end of the conical drill bit (3), a third external thread (17) is arranged on the third connecting cylinder (16), and a third internal thread (18) matched with the third external thread (17) is arranged at the lower end of the jacking pipe (1).