Advanced small conduit

Abstract

The advanced small guide pipe comprises a tip end and a slurry guide pipe connected with the tip end, the tip end comprises a connecting section and a tip part located at one end of the connecting section, the slurry guide pipe is connected with the tip end through a quick-mounting structure, and a grouting hole is formed in the slurry guide pipe; the quick mounting structure comprises an inserting part and a locking part, the inserting part is arranged at one end of the slurry guide pipe, the locking part is arranged in the connecting section of the tip end, the inserting part is inserted into the locking part so that the tip end can be connected with the slurry guide pipe, and the other end of the slurry guide pipe is used for grouting; the insertion part comprises an extension ring, ring teeth are arranged at the position, close to the end, of the outer circumference of the extension ring, and a plurality of notches are axially formed in the extension ring; the locking part comprises an annular clamping groove, and when the extending ring is inserted into the locking part, the ring teeth are clamped into the clamping groove. The locking part is located on the inner wall of the connecting section, and when the extending ring is inserted into the locking part, due to the fact that the multiple notches are annularly and evenly distributed in the extending ring, the end, located on the ring teeth, of the extending ring can deform inwards, and therefore rapid connection of the slurry guide pipe and the tip end is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an advanced small guide tube used for advanced support. Background Art

[0002] The advance small conduit is a tool for conduit grouting in tunnel construction. With the large-scale construction of underground tunnels in my country, the risk of cavern collapse is relatively high due to the surrounding rock geological conditions and other reasons. The application of advance small conduit grouting reinforcement measures is becoming more and more common. By grouting and consolidating the surrounding rock in front of the excavation direction, support is first carried out before excavation, providing safety guarantees for the excavation of tunnels or tunnels. In actual operation, the length of the advance small conduit varies according to different tunnel or tunnel sizes, geological conditions, etc. At present, the advance small conduits are all produced by manufacturers in a customized manner, and their versatility and turnover are poor.

[0003] To address this problem, existing advanced small conduits have a threaded docking structure, that is, the advanced small conduits are connected by multiple sections of pipes by threaded docking to solve the problem of poor versatility and turnover. However, when threaded docking is used, one end of the small conduit is an external thread. During transportation and transfer at the construction site, the external thread is easily bumped, causing the thread to deform and making it difficult to dock the thread. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, to provide an advanced small catheter, and to solve the problem that the existing advanced small catheter is difficult to connect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an advanced small catheter, comprising a tip and a grouting pipe connected to the tip, the tip comprising a connecting section and a tip located at one end of the connecting section, the grouting pipe is connected to the tip through a quick-fit structure, and a grouting hole is provided on the grouting pipe;

[0006] The quick-install structure includes an inserting part and a locking part, wherein one end of the grouting tube is provided with the inserting part, the connecting section of the tip is provided with the locking part, the inserting part is inserted into the locking part so as to connect the tip with the grouting tube, and the other end of the grouting tube is used for grouting;

[0007] The insertion part includes an extension ring, the outer circumference of the extension ring is provided with ring teeth near the end position, and multiple notches are axially provided on the extension ring; the locking part includes an annular groove, and when the extension ring is inserted into the locking part, the ring teeth are locked into the groove.

[0008] The grouting pipe includes a first pipe body, one end of which is provided with an insertion portion, and the other end is provided with a connecting portion, the connecting portion being used to connect to the grouting pipe of the grouting equipment, and the grouting holes on the first pipe body are multiple first through holes arranged on one side of the first pipe body close to the insertion portion.

[0009] The slurry guide tube comprises a first tube body and a plurality of second tube bodies, the second tube body is connected to the tip, and the first tube body is connected to the second tube body;

[0010] An insertion portion is provided at one end of the first tube body, and a connection portion is provided at the other end, the connection portion is used to connect to a grouting pipe of a grouting device, and the grouting holes on the first tube body are a plurality of first through holes provided on one side of the first tube body close to the insertion portion;

[0011] An inserting portion is provided at one end of the second tube body, and a locking portion is provided at the other end thereof. The grouting holes on the second tube body are a plurality of second through holes provided on the second tube body.

[0012] The connecting portion is an internal thread or an external thread arranged at the end of the first tube body, or a quick-connect connector installed at the end of the first tube body.

[0013] An annular groove is arranged on the extending ring of the inserting part at the root of the notch.

[0014] The locking portion further comprises an inner ring groove, and the clamping groove is arranged at the inner end of the inner ring groove.

[0015] The outer wall of the first tube body is provided with a positioning ring and a sealing ring at one end close to the connecting portion. The positioning ring is fixedly connected to the first tube body. The sealing ring is made of elastic material. The sealing ring is sleeved on the first tube body and is located on the side of the positioning ring close to the inserting portion.

[0016] The utility model has the following beneficial effects:

[0017] 1. The quick-installation structure of the utility model includes an insertion part and a locking part. The insertion part includes an extension ring. The outer circumference of the extension ring is provided with ring teeth near the end. The extension ring is provided with multiple notches in the axial direction. The locking part includes an annular groove. When the extension ring is inserted into the locking part, the ring teeth are inserted into the groove. The locking part is located on the inner wall of the connecting section. When the extension ring is inserted into the locking part, due to the multiple notches evenly distributed in an annular manner on the extension ring, the extension ring at one end of the ring teeth can be deformed inward, thereby realizing the quick connection between the slurry guide tube and the tip.

[0018] 2. The utility model adjusts the length of the leading small conduit according to the needs of the site by increasing or decreasing the number of the second tube bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic structural diagram of one embodiment of the utility model.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the first tube body of the utility model.

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the first tube body of the utility model.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the tip of the utility model.

[0024] Figure 5 It is a schematic cross-sectional structure diagram of the tip of the utility model.

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the second tube body of the utility model.

[0026] Figure 7 This is a schematic structural diagram of another embodiment of the utility model.

[0027] Figure 8 This is a schematic structural diagram of the third embodiment of the utility model.

[0028] In the figure:

[0029] A tip 10, a connecting section 11, and a tip 12;

[0030] A first tube body 20, a first through hole 21, a sealing ring 22, a positioning ring 23, and a connecting portion 24;

[0031] second tube body 30, second through hole 31;

[0032] Insertion portion 40, extension ring 41, ring teeth 42, notch 43, annular groove 44;

[0033] Locking portion 50 , locking groove 51 , inner annular groove 52 . DETAILED DESCRIPTION

[0034] Embodiment 1:

[0035] See also Figure 2-57. An advanced small catheter comprises a tip 10 and a grouting tube connected to the tip 10, wherein the tip 10 comprises a connecting section 11 and a tip 12 located at one end of the connecting section 11, the grouting tube is connected to the tip 10 through a quick-fit structure, and a grouting hole is provided on the grouting tube; the quick-fit structure comprises an insertion portion 40 and a locking portion 50, wherein the insertion portion 40 is provided at one end of the grouting tube, the locking portion 50 is provided in the connecting section 11 of the tip 10, the insertion portion 40 is inserted into the locking portion 50 to connect the tip 10 with the grouting tube, and the other end of the grouting tube is used for grouting; the insertion portion 40 comprises an extension ring 41, the outer circumference of the extension ring 41 is provided with ring teeth 42 near the end position, and a plurality of notches 43 are axially provided on the extension ring 41; the locking portion 50 comprises an annular clamping groove 51, and when the extension ring 41 is inserted into the locking portion 50, the ring teeth 42 are clamped into the clamping groove 51. In this embodiment, the locking portion 50 is located on the inner wall of the connecting section 11. When the extending ring 41 is inserted into the locking portion 50, due to the multiple notches 43 evenly distributed in an annular manner on the extending ring 41, the extending ring 41 at one end of the ring tooth 42 can be deformed inward, thereby realizing the quick connection of the slurry guide tube and the tip 10.

[0036] For details, see Figure 2 , 3 The grouting pipe includes a first pipe body 20, one end of the first pipe body 20 is provided with an inserting portion 40, and the other end is provided with a connecting portion 24, the connecting portion 24 is used to connect with the grouting pipe of the grouting equipment, and the grouting holes on the first pipe body 20 are a plurality of first through holes 21 arranged on one side of the first pipe body 20 close to the inserting portion 40. Through the above structure, it can be assembled into Figure 7 The advanced small catheter structure is a connection structure of a tip 10 and a first tube body 20 .

[0037] In this embodiment, the outer diameter of the protruding ring 41 is smaller than the outer diameter of the first tube body 20 , so that the thickness of the protruding ring 41 is thinner, and it is easier to deform inwards.

[0038] Embodiment 2:

[0039] See also Figure 1-6 8. The slurry guide tube includes a first tube body 20 and a plurality of second tube bodies 30. The second tube bodies 30 are connected to the tip 10, and the first tube body 20 is connected to the second tube body 30.

[0040] An insertion portion 40 is provided at one end of the first tube body 20, and a connecting portion 24 is provided at the other end. The connecting portion 24 is used to connect to the grouting pipe of the grouting equipment. The grouting holes on the first tube body 20 are multiple first through holes 21 arranged on one side of the first tube body 20 close to the insertion portion 40.

[0041] An inserting portion 40 is disposed at one end of the second tube body 30 , and a locking portion 50 is disposed at the other end thereof. The grouting holes on the second tube body 30 are a plurality of second through holes 31 disposed on the second tube body 30 .

[0042] Through the above structure, by increasing or decreasing the number of the second tube bodies 30, the length of the advance small catheter can be adjusted according to the needs on site.

[0043] exist Figure 1 In the invention, a tip 10, a first tube body 20, and a second tube body 30 are provided. The insertion portion 40 at one end of the second tube body 30 is docked with the locking portion 50 on the tip 10, and the insertion portion 40 of the first tube body 20 is docked with the locking portion 50 at the other end of the second tube body 30.

[0044] exist Figure 8 In the embodiment, there is a tip 10, a first tube body 20, and two second tube bodies 30. The insertion portion 40 at one end of one second tube body 30 is butted with the locking portion 50 on the tip 10, the insertion portion 40 at one end of another second tube body 30 is butted with the locking portion 50 at the other end of the previous second tube body 30, and the insertion portion 40 of the first tube body 20 is butted with the locking portion 50 at the other end of the next second tube body 30.

[0045] In the above embodiment, the connection portion 24 is an internal thread or an external thread provided at the end of the first tube body 20 , or a quick-connect connector installed at the end of the first tube body 20 .

[0046] It should be noted that the quick connector installed at the end of the first tube body 20 is part of a set of quick connectors, and the other part is installed on the grouting pipe of the grouting equipment. For example, a quick connector of a clamp quick-open flange type can be used.

[0047] Embodiment three:

[0048] See also Figure 2 On the extension ring 41 of the inserting part 40, an annular groove 44 is provided at the root of the notch 43. The thickness of the extension ring 41 is reduced to facilitate the inward deformation of the extension ring 41.

[0049] Embodiment 4:

[0050] See also Figure 5 The locking portion 50 further includes an inner annular groove 52, and the clamping groove 51 is arranged at the inner end of the inner annular groove 52. Specifically, the diameter of the inner annular groove 52 is larger than the inner diameter of the connecting section 11 and the second tube body 30, so that the inner wall or outer wall of the connecting section 11, the first tube body 30 and the second tube body 30 are flat when docked.

[0051] Embodiment five:

[0052] See also Figure 2 , 3A positioning ring 23 and a sealing ring 22 are provided on the outer wall of the first tube body 20 at one end close to the connection portion 24. The positioning ring 23 is fixedly connected to the first tube body 20. The sealing ring 22 is made of elastic material. The sealing ring 22 is sleeved on the first tube body 20 and is located on the side of the positioning ring 23 close to the insertion portion 40. The positioning ring 23 is used to fix the sealing ring 22. By installing the sealing ring 22 made of elastic material, the sealing ring 22 can block the hole to prevent leakage of the grouting liquid.

[0053] Preferably, the sealing ring 22 is made of EPDM foam rubber or high-density sponge, which has good shrinkage elasticity.

[0054] The working principle or action process of the utility model is as follows:

[0055] exist Figure 7 In the embodiment, a tip 10 and a first tube body 20 are provided, and an insertion portion 40 of the first tube body 20 is butted against a locking portion 50 on the tip 10 .

[0056] exist Figure 1 In the invention, a tip 10, a first tube body 20, and a second tube body 30 are provided. The insertion portion 40 at one end of the second tube body 30 is docked with the locking portion 50 on the tip 10, and the insertion portion 40 of the first tube body 20 is docked with the locking portion 50 at the other end of the second tube body 30.

[0057] exist Figure 8 In the embodiment, there is a tip 10, a first tube body 20, and two second tube bodies 30. The insertion portion 40 at one end of one second tube body 30 is butted with the locking portion 50 on the tip 10, the insertion portion 40 at one end of another second tube body 30 is butted with the locking portion 50 at the other end of the previous second tube body 30, and the insertion portion 40 of the first tube body 20 is butted with the locking portion 50 at the other end of the next second tube body 30.

[0058] Therefore, the length of the leading small catheter can be adjusted by increasing or decreasing the number of the second tube bodies 30. The device has good versatility and turnover utilization.

Claims

1. An advanced small catheter, comprising a tip (10) and a slurry guide tube connected to the tip (10), characterized in that: The tip (10) comprises a connecting section (11) and a tip portion (12) located at one end of the connecting section (11); the grouting pipe is connected to the tip (10) via a quick-fit structure; and a grouting hole is provided on the grouting pipe; The quick-installation structure comprises an insertion portion (40) and a locking portion (50), wherein one end of the grouting tube is provided with the insertion portion (40), the connecting section (11) of the tip (10) is provided with the locking portion (50), the insertion portion (40) is inserted into the locking portion (50) so as to connect the tip (10) to the grouting tube, and the other end of the grouting tube is used for grouting; The insertion portion (40) comprises an extension ring (41), the outer circumference of the extension ring (41) is provided with ring teeth (42) near the end, and the extension ring (41) is provided with a plurality of notches (43) in the axial direction; the locking portion (50) comprises an annular groove (51), and when the extension ring (41) is inserted into the locking portion (50), the ring teeth (42) are locked into the groove (51).

2. The advanced small catheter according to claim 1, characterized in that: The grouting pipe comprises a first pipe body (20), one end of the first pipe body (20) is provided with an insertion portion (40), and the other end is provided with a connecting portion (24), the connecting portion (24) is used to connect to a grouting pipe of a grouting device, and the grouting holes on the first pipe body (20) are a plurality of first through holes (21) arranged on a side of the first pipe body (20) close to the insertion portion (40).

3. The advanced small catheter according to claim 1, characterized in that: The slurry guide tube comprises a first tube body (20) and a plurality of second tube bodies (30), the second tube bodies (30) are connected to the tip (10), and the first tube body (20) is connected to the second tube bodies (30); An insertion portion (40) is provided at one end of the first tube body (20), and a connection portion (24) is provided at the other end, the connection portion (24) being used to connect to a grouting pipe of a grouting device, and the grouting holes on the first tube body (20) are a plurality of first through holes (21) provided on a side of the first tube body (20) close to the insertion portion (40); One end of the second tube body (30) is provided with an insertion portion (40), and the other end is provided with a locking portion (50); the grouting holes on the second tube body (30) are a plurality of second through holes (31) provided on the second tube body (30).

4. The advanced small catheter according to claim 2 or 3, characterized in that: The connecting portion (24) is an internal thread or an external thread provided at the end of the first tube body (20), or a quick-connect connector installed at the end of the first tube body (20).

5. The advanced small catheter according to any one of claims 1 to 3, characterized in that: An annular groove (44) is provided on the protruding ring (41) of the inserting portion (40) at the root of the notch (43).

6. The advanced small catheter according to any one of claims 1 to 3, characterized in that: The locking portion (50) further comprises an inner annular groove (52), and the locking groove (51) is arranged at the inner end of the inner annular groove (52).

7. The advanced small catheter according to claim 2 or 3, characterized in that: The outer wall of the first tube body (20) is provided with a positioning ring (23) and a sealing ring (22) at one end close to the connecting portion (24); the positioning ring (23) is fixedly connected to the first tube body (20); the sealing ring (22) is made of elastic material; the sealing ring (22) is sleeved on the first tube body (20) and is located on a side of the positioning ring (23) close to the inserting portion (40).

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