Anchor cable connecting tool and grouting anchor cable
By designing anchor cable connection fixtures, a connection device for the pumping of anchoring agent for hollow anchor cables is provided, which solves the problems of cumbersome construction and limited length in traditional anchoring methods, and achieves efficient anchoring and grouting effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CCTEG COAL MINING RES INST
- Filing Date
- 2023-12-25
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional hollow grouting anchor cable anchoring methods involve cumbersome construction processes, high resistance to mixing during propulsion, limited anchoring length, and a lack of matching connection devices for pumped anchoring agents, which can easily lead to leakage and blockage.
Design an anchor cable connection fixture, including a connection component, a mixing component, and a connector to form a flow channel for the anchoring agent, provide a matching connection device, and adopt a pump injection method to reduce construction difficulty and achieve good anchoring.
By using the pump injection method for anchoring agent, the problem of limited anchoring length was overcome, the difficulty of construction process was reduced, the smooth injection of anchoring agent was ensured, and the initial anchoring force and grouting effect of hollow anchor cables were improved.
Smart Images
Figure CN117662210B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of coal mine grouting support technology, and in particular to an anchor cable connection tool and a grouting anchor cable. Background Technology
[0002] The traditional method for anchoring hollow grouting anchor cables is mixing anchoring. The specific construction process involves first placing 2-3 bags of resin anchoring agent into the anchor cable borehole, then pushing them to the bottom of the borehole. Next, the anchor cable is axially advanced, and the mixing head at the front end of the anchor cable is used to break open the resin anchoring agent bags, mixing anchoring agent components A and B together. At the same time, the anchor cable is continuously advanced axially while being rotated and mixed to ensure that the anchoring agents are fully mixed and reacted. However, this anchoring method is cumbersome, has high resistance to pushing and mixing, and has a limited anchoring length.
[0003] To avoid the problem of limited anchor length in traditional anchoring methods, our company has developed a "first anchor, then grout" hollow anchor construction process. In this process, anchoring is carried out by pumping anchoring agent. However, in actual use, there is a lack of matching connection devices for pumping anchoring agent. At the same time, leakage is also prone to occur during the pumping of anchoring agent, which can cause the anchoring agent to enter the grouting channel and block the hollow anchor cable, causing the anchor cable to lose its grouting function. Summary of the Invention
[0004] The present invention aims to at least partially solve one of the technical problems in the related art.
[0005] To this end, one embodiment of the present invention proposes an anchor cable connection fixture, which provides a matching connection device for the pumping of anchoring agent in hollow anchor cables, so as to ensure that the anchoring agent can be smoothly pumped from the hollow anchor cable into the grouting hole, thereby achieving good anchoring of the hollow anchor cable and overcoming the problem of limited anchoring length.
[0006] Another embodiment of the present invention provides a grouting anchor cable.
[0007] An anchor cable connection fixture according to an embodiment of the present invention includes a connection component, a mixing component, and a connector.
[0008] The connecting component has a flow channel and an outlet communicating with the flow channel and at least two inlets;
[0009] The mixing assembly includes a sleeve, the two ends of which are respectively connected to the discharge port and the first end of the connector. The sleeve has a material cavity that connects the discharge port and the connector. The second end of the connector is used to connect to a hollow anchor cable.
[0010] According to an embodiment of the present invention, the anchor cable connection fixture is designed with a structure in which a connecting component, a sleeve, a connector, and a hollow anchor cable are connected in sequence. This design creates a flow channel for the anchoring agent between the inlet, flow channel, outlet, material cavity, the inner cavity of the connector, and the hollow anchor cable. This provides a matching connection device for the pumping of anchoring agent into the hollow anchor cable, ensuring that the anchoring agent can be smoothly pumped from the hollow anchor cable into the grouting hole. Compared to the mixing anchoring method used in related technologies for hollow grouting anchor cables, the anchor cable connection fixture in this application can assist in anchoring the hollow anchor cable by pumping anchoring agent, reducing the difficulty of the construction process, achieving good anchoring of the hollow anchor cable, and overcoming the problem of limited anchoring length.
[0011] In some embodiments, the anchor cable connection fixture further includes a locking cylinder, the locking cylinder comprising a first connecting ring, a middle cylinder, and a second connecting ring connected sequentially along the axial direction of the locking cylinder;
[0012] The first connecting ring is threadedly connected to the sleeve, the second connecting ring is sleeved on the hollow anchor cable, and the connecting piece is fitted inside the first connecting ring and / or the middle cylinder.
[0013] In some embodiments, the outer peripheral surface of the middle cylinder is provided with an operating hole communicating with the inner cavity of the middle cylinder, and the inner diameter of the second connecting ring gradually decreases in the direction from the first connecting ring toward the second connecting ring;
[0014] The anchor cable connection fixture also includes a locking plate, which is installed between the second connecting ring and the hollow anchor cable along the axial direction of the second connecting ring. The thickness of the locking plate gradually decreases from the first connecting ring toward the second connecting ring.
[0015] In some embodiments, at least two locking plates are arranged at circumferential intervals along the second connecting ring, and the locking plates have anti-slip surfaces that are in contact with the outer peripheral surface of the hollow anchor cable.
[0016] In some embodiments, the anchor cable connection fixture further includes a helical blade, which engages within the material cavity.
[0017] In some embodiments, there are multiple helical blades that are connected sequentially along the coaxial direction of the material cavity, and the rotation directions of any two adjacent helical blades are opposite.
[0018] In some embodiments, the sum of the lengths of the plurality of helical blades along the extension direction of the material cavity is equal to the length of the material cavity;
[0019] The spiral blades are coaxial with the material cavity, and the difference between the diameter of the spiral blades and the inner diameter of the material cavity is s, where 1 mm ≤ s ≤ 2 mm.
[0020] In some embodiments, the connecting assembly further includes an end cap and at least two quick connectors. The end cap is provided with the flow channel, the discharge port and the inlet port. The quick connectors are threadedly connected to the end cap and communicate with the inlets one by one.
[0021] In some embodiments, the outer peripheral surface of the sleeve is provided with a clamping plane, which is located between the end cap and the first connecting ring.
[0022] According to an embodiment of the present invention, a grouting anchor cable includes a hollow anchor cable and an anchor cable connecting fixture.
[0023] The hollow anchor cable includes an inner tube, a grouting pipe and a locking body arranged sequentially from the inside to the outside. A grouting channel is defined between the outer circumferential surface of the inner tube and the inner circumferential surface of the grouting pipe. The inner tube is used to inject anchoring agent.
[0024] The anchor cable connection fixture is the same as described above, and the grouting pipe is sleeved on the connector.
[0025] The technical advantages of the grouting anchor cable according to the embodiments of the present invention are the same as those of the anchor cable connection tooling described above, and will not be repeated here.
[0026] In some embodiments, the connector includes a nozzle and a washer.
[0027] The nozzle has a first section, a second section, and a third section connected in sequence. The first section, the second section, and the third section together define an anchoring agent channel that connects the material cavity and the inner tube. At least a portion of the first section is threadedly connected to a sleeve. The grouting pipe is sleeved on the second section, and the third section is fitted into the inner tube.
[0028] The washer is sandwiched between the second section and the inner tube and sleeved on the third section.
[0029] In some embodiments, the connector further includes a rubber gasket sandwiched between the first segment and the sleeve.
[0030] In some embodiments, the second segment is provided with a first shoulder along the axial direction of the second segment, and the inner tube abuts against the first shoulder.
[0031] In some embodiments, the connector includes a grouting head having a grouting port communicating with the material chamber and the grouting channel. At least a portion of a first end of the grouting head is threadedly connected to a sleeve, and at least a portion of a second end of the grouting head extends into the grouting channel and has a tapered surface abutting against the inner edge of the end face of the grouting pipe. The diameter of the tapered surface gradually decreases in the direction from the first end of the grouting head toward the second end of the grouting head.
[0032] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0033] Figure 1 This is a structural schematic diagram of the anchor cable connection tool according to an embodiment of the present invention.
[0034] Figure 2 This is a cross-sectional structural schematic diagram of the sleeve in the anchor cable connection tooling according to an embodiment of the present invention.
[0035] Figure 3 This is a schematic diagram of the structure of the helical blade in the anchor cable connection tooling according to an embodiment of the present invention.
[0036] Figure 4 This is a schematic diagram of the locking cylinder in the anchor cable connection tooling according to an embodiment of the present invention.
[0037] Figure 5 This is a structural schematic diagram of a grouting anchor cable according to an embodiment of the present invention.
[0038] Figure 6 This is a schematic diagram of the connection structure between the nozzle and the hollow anchor cable in the grouting anchor cable according to an embodiment of the present invention.
[0039] Figure 7 This is a schematic diagram of the connection structure between the grouting head and the hollow anchor cable in a grouting anchor cable according to an embodiment of the present invention.
[0040] Reference numerals: 1. Connecting assembly; 11. End cap; 12. Quick connector; 2. Mixing assembly; 21. Sleeve; 211. Clamping plane; 22. Material chamber; 3. Connecting piece; 31. Top nozzle; 311. First section; 312. Second section; 313. Third section; 314. Anchoring agent channel; 32. Washer; 33. Rubber gasket; 34. Grouting head; 341. Grouting port; 342. Conical surface; 4. Hollow anchor cable; 41. Inner tube; 42. Grouting pipe; 43. Lock body; 44. Grouting channel; 5. Lock cylinder; 51. First connecting ring; 52. Middle cylinder; 521. Operating hole; 53. Second connecting ring; 6. Locking plate; 7. Spiral blade. Detailed Implementation
[0041] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0042] like Figure 1 and Figure 2 As shown, an anchor cable connection fixture according to an embodiment of the present invention includes a connection component 1, a mixing component 2, and a connector 3.
[0043] The connecting component 1 has a flow channel and an outlet communicating with the flow channel, and at least two inlets.
[0044] The mixing component 2 includes a sleeve 21, with its two ends connected to the discharge port and the first end of the connector 3, respectively. The sleeve 21 is provided with a material cavity 22 that connects the discharge port and the connector 3. The second end of the connector 3 is used to connect to the hollow anchor cable 4.
[0045] According to an embodiment of the present invention, the anchor cable connection fixture is designed with a structure in which the connecting component 1, sleeve 21, connector 3 and hollow anchor cable 4 are connected in sequence. An anchoring agent flow channel is formed between the inlet, flow channel, outlet, material cavity 22, inner cavity of connector 3 and hollow anchor cable 4. This provides a matching connection device for the pumping anchoring agent process of hollow anchor cable 4, ensuring that the anchoring agent can be smoothly pumped from hollow anchor cable 4 into the grouting hole. Compared with the stirring anchoring method used in related technologies for hollow grouting anchor cables, the anchor cable connection fixture in this application can assist the hollow anchor cable 4 in anchoring by pumping anchoring agent, reducing the difficulty of construction process, achieving good anchoring of hollow anchor cable 4, and overcoming the problem of limited anchoring length.
[0046] Specifically, the connecting component 1, sleeve 21, connector 3, and hollow anchor cable 4 can be sequentially connected coaxially along a first direction, wherein the axial direction of sleeve 21, connector 3, and hollow anchor cable 4 are all in the first direction. The specific number of feed inlets can be set according to the number of types of materials required to form the anchoring agent, as well as the required flow rate of the anchoring agent entering the hollow anchor cable 4 or the required grouting flow rate. Generally, the anchoring agent is a mixture of two different materials, so two feed inlets can be provided, so that the two materials enter from one feed inlet respectively, mix in the material cavity 22 to form the anchoring agent, and then supply it to the hollow anchor cable 4 through the inner cavity of connector 3, entering the grouting hole for anchoring. The inner cavity of sleeve 21 is the material cavity 22. Sleeve 21 is not limited to a metal sleeve 21.
[0047] It should be noted that the anchor cable connection fixture in this application is mainly designed to match the construction process of the hollow anchor cable 4 using a "first anchor, then grout" method. "First anchor, then grout" means that the anchoring agent is first pumped into the grouting hole through the hollow anchor cable 4 to form anchor support. The pumping method increases the length of the anchoring agent in the hollow anchor cable 4, improving the initial anchoring force of the hollow anchor cable 4 under soft and fractured coal and rock conditions. Combined with high-pressure grouting technology, the hollow anchor cable 4 is used to modify and reinforce the coal body, fully utilizing the dual functions of anchoring and grouting to help solve the problem of large deformation in soft rock roadways. The anchor cable connection fixture bridges the gap between pumping the anchoring agent and pumping the grout to the hollow anchor cable 4, and can be switched between these two functions, making it highly adaptable.
[0048] like Figure 1 and Figure 4 As shown, in some embodiments, the anchor cable connection fixture further includes a locking cylinder 5, which includes a first connecting ring 51, a middle cylinder 52, and a second connecting ring 53 connected sequentially along the axial direction of the locking cylinder 5.
[0049] The first connecting ring 51 is threadedly connected to the sleeve 21, the second connecting ring 53 is sleeved on the hollow anchor cable 4, and the connecting piece 3 is fitted inside the first connecting ring 51 and / or the middle cylinder 52.
[0050] The locking sleeve 5 can limit and lock the connection between the sleeve 21, the connector 3 and the hollow anchor cable 4, ensuring the reliability of the connection. At the same time, the threaded structure between the first connecting ring 51 and the sleeve 21 can also generate a large axial locking force between them. When the high-pressure anchoring agent or high-pressure slurry flows in the material cavity 22, the inner cavity of the connector 3 and the hollow anchor cable 4, the high-pressure impact force cannot easily destroy the connection between the sleeve 21, the connector 3 and the hollow anchor cable 4. Thus, the anchor cable connection tooling can withstand a certain high pressure, forming the first pressure-bearing structure.
[0051] Specifically, the first connecting ring 51, the middle cylinder 52, and the second connecting ring 53 can be integrally formed on the same axis, which facilitates the alignment and connection between the sleeve 21, the connecting piece 3, and the hollow anchor cable 4, and reduces the processing difficulty of the lock cylinder 5. The first connecting ring 51 can be threaded onto the sleeve 21.
[0052] like Figure 1 and Figure 4 As shown, in some embodiments, the outer peripheral surface of the middle cylinder 52 is provided with an operation hole 521 that communicates with the inner cavity of the middle cylinder 52, and the inner diameter of the second connecting ring 53 gradually decreases in the direction from the first connecting ring 51 toward the second connecting ring 53.
[0053] The anchor cable connection fixture also includes a locking plate 6, which is installed between the second connecting ring 53 and the hollow anchor cable 4 along the axial direction of the second connecting ring 53. The thickness of the locking plate 6 gradually decreases in the direction from the first connecting ring 51 toward the second connecting ring 53.
[0054] The operating hole 521 allows operators to easily assemble and disassemble the connecting piece 3 between the sleeve 21 and the hollow anchor cable 4. The conical inner diameter of the second connecting ring 53, in conjunction with the structure of the locking plate 6, generates radial extrusion force between the locking sleeve 5, the locking plate 6, and the hollow anchor cable 4. This enables reliable pre-tightening of the hollow anchor cable 4 within the second connecting ring 53, further preventing interference from the high-pressure impact force during the flow of high-pressure anchoring agent or high-pressure grout on the reliable connection between the three components. This improves the pressure-bearing capacity of the anchor cable connection fixture and forms a second pressure-bearing structure.
[0055] Specifically, the operating hole 521 has a first end and a second end along the axial direction of the middle cylinder 52. The first end of the operating hole 521 communicates with the first connecting ring 51, and the second end of the operating hole 521 communicates with the second connecting ring 53. The second connecting ring 53 is a hollow frustum structure or the inner cavity of the second connecting ring 53 is a frustum inner cavity. The minimum inner diameter of the second connecting ring 53 is equal to the outer diameter of the hollow anchor cable 4.
[0056] like Figure 1 and Figure 4 As shown, in some embodiments, there are at least two locking plates 6 arranged at circumferential intervals along the second connecting ring 53, and the locking plates 6 have anti-slip surfaces that are in contact with the outer circumferential surface of the hollow anchor cable 4.
[0057] The design of having at least two locking plates 6 spaced apart circumferentially along the second connecting ring 53 ensures reliable pre-tightening of the hollow anchor cable 4 within the second connecting ring 53 and disperses the radial compressive force between them circumferentially, resulting in more uniform circumferential stress on the hollow anchor cable 4 and the second connecting ring 53, thus guaranteeing service life. At the same time, the anti-slip structure between the locking plates 6 and the hollow anchor cable 4 prevents them from slipping against each other, effectively avoiding the problem of high-pressure impact force pushing the hollow anchor cable 4 and the connecting piece 3 apart along the axial direction of the hollow anchor cable 4 when the high-pressure anchoring agent or high-pressure grout flows. This further ensures the pressure-bearing capacity of the anchor cable connection fixture, forming a third pressure-bearing structure.
[0058] Specifically, the locking plates 6 are evenly spaced along the circumference of the second connecting ring 53. The anti-slip surface is not limited to the threaded surface.
[0059] like Figure 1 and Figure 3 As shown, in some embodiments, the anchor cable connection fixture also includes a helical blade 7, which is fitted inside the material chamber 22 so that when the high-pressure material (the material required to form the anchoring agent) or the high-pressure slurry enters the material chamber 22 and flows, it can be fully mixed by the helical blade 7 to form the anchoring agent or to make the slurry mixing effect better.
[0060] It is understandable that the spiral blade 7 can be directly fixed in the material cavity 22, or it can be driven to rotate in the material cavity 22. In addition, when grouting is required, if there is no need to mix and stir the grout, the spiral blade 7 can be removed from the material cavity 22, so that the high-pressure grout flows directly through the material cavity 22 to the hollow anchor cable 4.
[0061] like Figures 1 to 3 As shown, in some embodiments, there are multiple spiral blades 7 connected coaxially along the extension direction of the material chamber 22, and the spiral directions of any two adjacent spiral blades 7 are opposite, that is, spiral blades 7 with different spiral directions are connected alternately, which is more conducive to the mixing of high-pressure materials.
[0062] Specifically, the helical blade 7 is not limited to being a metal blade.
[0063] like Figures 1 to 3 As shown, in some embodiments, the sum of the lengths of the plurality of spiral blades 7 along the extension direction of the material chamber 22 is equal to the length of the material chamber 22, further ensuring the mixing effect of the high-pressure material.
[0064] The spiral blade 7 is coaxial with the material chamber 22, and the difference between the diameter of the spiral blade 7 and the inner diameter of the material chamber 22 is s, where 1 mm ≤ s ≤ 2 mm.
[0065] like Figure 1 As shown, in some embodiments, the connecting assembly 1 further includes an end cap 11 and at least two quick connectors 12. The end cap 11 is provided with a flow channel, a discharge port and a feed port. The quick connectors 12 are threadedly connected to the end cap 11 and are connected to the feed ports one by one. The quick connectors 12 can facilitate quick assembly and disassembly between the end cap 11 and the external hose.
[0066] Specifically, the end cap 11 has two feed ports, each of which is threaded to one end of a quick connector 12. The other end of the quick connector 12 is connected to an external hose, which can be connected to a high-pressure material supply pump or a high-pressure slurry supply pump. The two feed ports are symmetrically arranged on both sides of the end cap 11.
[0067] like Figure 1 As shown, in some embodiments, the outer peripheral surface of the sleeve 21 is provided with a clamping plane 211, which is located between the end cap 11 and the first connecting ring 51. The clamping plane 211 can facilitate the installation and disassembly of the sleeve 21 with other components.
[0068] It should be noted that, compared with related technologies, the triple pressure-bearing structure in the anchor cable connection fixture enables the fixture to withstand pumping pressure of anchoring agent above 10MPa and grouting pressure above 20MPa. Therefore, it can meet the matching connection requirements of the external pump body pumping anchoring agent or grout into the hollow anchor cable 4 in the "anchor first, then grout" construction process.
[0069] like Figures 1 to 5 As shown, an embodiment of the present invention provides a grouting anchor cable including a hollow anchor cable 4 and an anchor cable connecting fixture.
[0070] The hollow anchor cable 4 includes an inner tube 41, a grouting pipe 42 and a locking body 43, which are sequentially arranged from the inside to the outside. A grouting channel 44 is defined between the outer circumferential surface of the inner tube 41 and the inner circumferential surface of the grouting pipe 42. The inner tube 41 is used to inject anchoring agent.
[0071] Among them, the anchor cable connection tooling is the aforementioned anchor cable connection tooling, and the grouting pipe 42 is sleeved on the connector 3.
[0072] The technical advantages of the grouting anchor cable according to the embodiments of the present invention are the same as those of the anchor cable connection tooling described above, and will not be repeated here.
[0073] Understandably, the hollow anchor cable 4 has an inner tube 41 and a grouting channel 44 that are independent of each other, allowing for sequential operation of anchoring agent pumping and grout pumping. The design is ingenious and highly practical. Compared with related technologies, it increases the anchoring length and improves the initial anchoring force.
[0074] like Figure 5 and Figure 6 As shown, in some embodiments, the connector 3 includes a nozzle 31 and a washer 32.
[0075] The nozzle 31 has a first section 311, a second section 312 and a third section 313 connected in sequence. The first section 311, the second section 312 and the third section 313 together define an anchoring agent channel 314 that connects the material cavity 22 and the inner tube 41. At least a portion of the first section 311 is threadedly connected to the sleeve 21. The grouting pipe 42 is sleeved on the second section 312 and the third section 313 is fitted in the inner tube 41.
[0076] Among them, the washer 32 is sandwiched between the second section 312 and the inner tube 41 and is sleeved on the third section 313.
[0077] The connector 3 uses a nozzle 31, which allows the anchoring agent to enter the inner tube 41 through the flow channel of the end cap 11, the material cavity 22 of the sleeve 21, and the anchoring agent channel 314, so as to meet the anchoring function requirements of the grouting anchor cable. The washer 32 can contact the end of the inner tube 41 and undergo elastic deformation during the process of the rotating sleeve 21 pushing the nozzle 31 towards the inner tube 41, sealing the connection between the second section 312 and the inner tube 41, separating the anchoring agent channel 314 and the grouting channel 44, avoiding leakage when pumping the anchoring agent, and ensuring the grouting function of the grouting anchor cable.
[0078] Specifically, washer 32 is a rubber washer.
[0079] like Figure 1 and Figure 6 As shown, in some embodiments, the connector 3 further includes a rubber gasket 33, which is sandwiched between the first section 311 and the sleeve 21. The first section 311 and the sleeve 21 are connected by threads, and the rubber gasket 33 is provided between them. When tightened, the rubber gasket 33 can be squeezed to make it elastically deformed, so as to ensure the connection and sealing between the nozzle 31 and the sleeve 21.
[0080] like Figure 6 As shown, in some embodiments, the second segment 312 is provided with a first shoulder along the axial direction of the second segment 312, and the inner tube 41 abuts against the first shoulder to facilitate the assembly and positioning between the nozzle 31 and the inner tube 41.
[0081] like Figure 5 and Figure 7 As shown, in some embodiments, the connector 3 includes a grouting head 34, which has a grouting port 341 connecting the material chamber 22 and the grouting channel 44. At least a portion of the first end of the grouting head 34 is threadedly connected to the sleeve 21, and at least a portion of the second end of the grouting head 34 extends to the grouting channel 44 and has a tapered surface 342 that abuts against the inner edge of the end face of the grouting pipe 42. The diameter of the tapered surface 342 gradually decreases from the first end of the grouting head 34 toward the second end of the grouting head 34. The tapered surface 342 of the grouting head 34 contacts and compresses the grouting pipe 42, generating plastic deformation and completing the seal between the grouting port 341 and the grouting channel 44.
[0082] Specifically, the second end of the grouting head 34 is spaced apart from the end of the inner tube 41 to prevent the inner tube 41 from being filled with anchoring agent and solidifying, which would block the grouting port 341 and affect the normal progress of the grouting operation.
[0083] It should be noted that when pumping the anchoring agent, connector 3 uses nozzle 31. When grouting is required, nozzle 31 can be replaced with grouting head 34. The connection and switching between the two between sleeve 21 and hollow anchor cable 4 is simple. Of course, two separate sets of grouting anchor cables can also be made. One set of grouting anchor cables uses nozzle 31 for connector 3 to achieve pumped anchoring agent anchoring, while the other set of grouting anchor cables uses grouting head 34 for connector 3 to achieve pumped grouting. The two sets of grouting anchor cables can be used sequentially during operation and have good interchangeability.
[0084] like Figures 1 to 7 As shown, the specific structure of this anchor cable connection fixture will now be used to explain its usage method, specifically as follows:
[0085] When grouting anchor cable injection of anchoring agent is required, firstly, thread the first section 311 of the nozzle 31 into the sleeve 21, then thread the first connecting ring 51 onto the sleeve 21, so that the hollow anchor cable 4 passes through the second connecting ring 53. Insert the locking piece 6 between the inner circumferential surface of the second connecting ring 53 and the outer circumferential surface of the hollow anchor cable 4, along the direction from the first connecting ring 51 towards the second connecting ring 53. By striking the locking piece 6, it is moved axially along the second connecting ring 53 until the locking piece 6 is squeezed between the second connecting ring 53 and the hollow anchor cable 4, generating radial mutual compressive force. This completes the connection of the sleeve 21, locking cylinder 5, and hollow anchor cable. After the pre-tightening of the cable 4, the sleeve 21 is rotated to push the nozzle 31 towards the inner tube 41 until the third section 313 of the nozzle 31 fits into the inner tube 41, the inner tube 41 abuts against the first shoulder, the washer 32 contacts the end of the inner tube 41 and undergoes elastic deformation, sealing the connection between the second section 312 and the inner tube 41, separating the anchoring agent channel 314 and the grouting channel 44. Finally, the external hose connected to the quick connector 12 is connected to the high-pressure material supply pump to complete the assembly of the anchor cable connection tool and the hollow anchor cable 4, start the high-pressure material supply pump to realize the anchoring operation of the grouting anchor cable.
[0086] After the anchoring of the grouting anchor cable is completed, when grouting is required, connect the external hose to the high-pressure grout supply pump, rotate the sleeve 21 in the opposite direction to drive the nozzle 31 towards the sleeve 21 until the third section 313 of the nozzle 31 disengages from the inner tube 41. Then, rotate the nozzle 31 in the opposite direction through the operating hole 521 until the nozzle 31 disengages from the sleeve 21. Remove the nozzle 31, thread the first end of the grouting head 34 into the sleeve 21, and then... Then rotate the sleeve 21 to push the grouting head 34 towards the inner tube 41 until the conical surface 342 of the grouting head 34 abuts against the inner edge of the end face of the grouting pipe 42, completing the replacement operation of the grouting head 34 and the nozzle 31. At this time, the inner tube 41 is completely filled with anchoring agent and solidified. Start the high-pressure grout supply pump and the grout flows from the end cover 11, the material chamber 22 and the grouting port 341 into the grouting channel 44, which can realize the grouting operation of the grouting anchor cable.
[0087] 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 are not intended to 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.
[0088] 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 technical features indicated. 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.
[0089] 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, an electrical connection, or a connection that allows communication between them; 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.
[0090] 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.
[0091] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0092] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. An anchor cable connection fixture, characterized in that, include: A connecting assembly having a flow channel and an outlet communicating with the flow channel and at least two inlets; as well as A mixing assembly and a connector, the mixing assembly including a sleeve, the two ends of the sleeve being connected to the discharge port and the first end of the connector respectively, the sleeve having a material cavity communicating with the discharge port and the connector, and the second end of the connector being used to connect to a hollow anchor cable; The connecting assembly also includes an end cap and at least two quick connectors. The end cap is provided with the flow channel, the discharge port and the inlet port. The quick connectors are threadedly connected to the end cap and communicate with the inlets one by one. The quick connectors can facilitate quick assembly and disassembly between the end cap and the external hose. The anchor cable connection fixture also includes a locking cylinder, which includes a first connecting ring, a middle cylinder, and a second connecting ring connected sequentially along the axial direction of the locking cylinder; the first connecting ring is threadedly connected to the sleeve, the second connecting ring is sleeved on the hollow anchor cable, and the connecting piece is fitted inside the first connecting ring and / or the middle cylinder; The outer circumferential surface of the middle cylinder is provided with an operating hole communicating with the inner cavity of the middle cylinder. The inner diameter of the second connecting ring gradually decreases in the direction from the first connecting ring toward the second connecting ring. The anchor cable connecting fixture also includes a locking plate, which is installed between the second connecting ring and the hollow anchor cable along the axial direction of the second connecting ring. The thickness of the locking plate gradually decreases in the direction from the first connecting ring toward the second connecting ring.
2. The anchor cable connection fixture according to claim 1, characterized in that, The locking plates are at least two in number and are arranged at circumferential intervals along the second connecting ring. The locking plates have anti-slip surfaces that are in contact with the outer circumferential surface of the hollow anchor cable.
3. The anchor cable connection fixture according to claim 1, characterized in that, The anchor cable connection fixture also includes a helical blade, which fits into the material cavity.
4. The anchor cable connection fixture according to claim 3, characterized in that, The spiral blades are multiple and connected sequentially along the coaxial direction of the material cavity, with any two adjacent spiral blades having opposite directions of rotation.
5. A grouting anchor cable, characterized in that, include: A hollow anchor cable includes an inner tube, a grouting pipe, and a locking body arranged sequentially from the inside to the outside. A grouting channel is defined between the outer circumferential surface of the inner tube and the inner circumferential surface of the grouting pipe. The inner tube is used to inject anchoring agent. and An anchor cable connection fixture, wherein the anchor cable connection fixture is the anchor cable connection fixture according to any one of claims 1-4, and the grouting pipe is sleeved on the connector.
6. The grouting anchor cable according to claim 5, characterized in that, The connecting component includes: The nozzle has a first section, a second section, and a third section connected in sequence. The first section, the second section, and the third section together define an anchoring agent channel that connects the material cavity and the inner tube. At least a portion of the first section is threadedly connected to a sleeve. The grouting pipe is sleeved on the second section, and the third section is fitted into the inner tube. A washer, which is sandwiched between the second section and the inner tube and sleeved on the third section.
7. The grouting anchor cable according to claim 6, characterized in that, The connector also includes a rubber gasket, which is sandwiched between the first section and the sleeve.
8. The grouting anchor cable according to any one of claims 5-7, characterized in that, The connector includes a grouting head, which has a grouting port connecting the material cavity and the grouting channel. At least a portion of the first end of the grouting head is threadedly connected to a sleeve, and at least a portion of the second end of the grouting head extends into the grouting channel and has a tapered surface that abuts against the inner edge of the end face of the grouting pipe. The diameter of the tapered surface gradually decreases in the direction from the first end of the grouting head toward the second end of the grouting head.