A high-pressure jet grouting device for building construction

Abstract

The present invention discloses a high-pressure jet grouting device for building construction, belonging to the technical field of high-pressure jet grouting pile construction, which includes a rod body structure and a terminal structure. The terminal structure includes a cover assembly arranged at the output end of the rod body structure, and the cover assembly includes two elastic buckle units and multiple nozzle units. During the construction of high-pressure jet grouting piles, when the nozzle units in the terminal structure located at the output end of the rod body structure are blocked, resulting in an increase in the internal hydraulic pressure of the rod body structure and exceeding the preset upper pressure limit, when the hydraulic pressure drives the two elastic baffle diaphragms to undergo elastic deformation and the telescopic module extends, the switch moving piece contacts the switch static terminal and triggers the signal transmitter to turn on, and then the signal transmitter emits a fault alarm signal externally, enabling the operator to quickly detect abnormal situations during construction and immediately take measures such as stopping the machine to avoid further deterioration of the situation, thereby ensuring the safe progress of high-pressure jet grouting pile construction.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure rotary jet grouting pile construction, and more specifically, to a high-pressure rotary jet device for building construction. Background Art

[0002] The high-pressure rotary jet grouting pile technology is developed by integrating the principle of hydraulic coal mining on the basis of static pressure grouting. During the construction process of this technology, first, a drill is used to drill a hole at the location to be reinforced, then the drill rod is pulled out and a rotary jet pipe is inserted. After the rotary jet pipe descends to the bottom of the hole, it starts to rotate and rise while injecting cement slurry to cut and mix the formation, changing the structure and composition of the original formation, so that a cylindrical consolidation body with a certain strength is formed in the foundation to achieve the purpose of reinforcing the foundation and preventing seepage and stopping water.

[0003] Currently, during the construction process of high-pressure rotary jet grouting piles, due to the soft soil layer after drilling and the presence of impurities such as debris, soil, and stones in the hole, when the rotary jet pipe is inserted into the drill hole, it is easy for the impurities in the hole to invade the nozzle of the rotary jet pipe.

[0004] In the above situation, during the high-pressure rotary jet construction process, it is extremely easy to cause the occurrence of blocked jet holes, resulting in an abnormal increase in pressure of the high-pressure rotary jet device, causing damage or failure of the equipment, and at the same time, it is also easy to trigger safety accidents, posing a threat to the personal safety of construction workers.

[0005] In view of this, we propose a high-pressure rotary jet device for building construction. Summary of the Invention

[0006] Technical problems to be solved: The purpose of the present invention is to provide a high-pressure rotary jet device for building construction, which solves the technical problems raised in the above background art.

[0007] Technical solution: The technical solution of the present invention provides a high-pressure rotary jet device for building construction, including a rod body structure and a terminal structure. The terminal structure includes a cover assembly arranged at the output end of the rod body structure. The cover assembly includes two elastic buckle units and a plurality of nozzle units. At the position corresponding to each elastic buckle unit on the side wall of the output end of the rod body structure, there is a card hole for the elastic buckle unit to buckle into, and the cover assembly is buckled and connected to the output end of the rod body structure through the elastic buckle unit;

[0008] Inside the output end of the rod body structure, an elastic sealing diaphragm is connected at the position corresponding to each card hole, and the elastic sealing diaphragm seals the opening at the end of the card hole. There is a telescopic module between the two elastic sealing diaphragms. The telescopic module includes a signal transmitter, a switch static terminal connected to the bottom cylinder of the telescopic module, and a switch moving piece connected to the reciprocating rod of the telescopic module;

[0009] When the nozzle unit is blocked, causing the internal hydraulic pressure of the rod structure to increase and exceed the preset upper pressure limit, when the two elastic sealing diaphragms are elastically deformed and the telescopic module extends, the switch moving piece contacts the switch static terminal and triggers the signal transmitter to turn on.

[0010] As an alternative solution of the technical solution of the present invention document, the rod structure includes a hollow rotary jet rod and an output interface connected to the output port of the hollow rotary jet rod;

[0011] The card hole is provided on the side wall of the output interface;

[0012] The elastic sealing diaphragm is connected to the inner cavity side wall of the output interface;

[0013] The rod structure further includes a plurality of traction ropes, and mounting seats are connected to both ends of each traction rope;

[0014] A circular storage groove for accommodating the traction rope is provided at the bottom end of the hollow rotary jet rod.

[0015] As an alternative solution of the technical solution of the present invention document, the cover assembly includes an end cover shell, and an annular sealing gasket is connected to the end of the inner cavity of the open end of the end cover shell;

[0016] The nozzle units are arranged in a circular array on the cover assembly;

[0017] The nozzle unit includes a nozzle interface fixedly connected to the side wall of the end cover shell in the cover assembly;

[0018] A nozzle is provided on the nozzle interface, and the nozzle is threadedly connected to the nozzle interface;

[0019] The mounting seat connected to one end of the traction rope is detachably connected to the end of the circular storage groove, and the mounting seat connected to the other end of the traction rope is detachably connected to the end of the end cover shell.

[0020] As an alternative solution of the technical solution of the present invention document, the elastic buckle unit includes a chuck, and a handle rod is connected to the end of the chuck;

[0021] A return spring is sleeved on the outer periphery of the handle rod.

[0022] As an alternative solution of the technical solution of the present invention document, horizontal grooves adapted to the chucks are provided at the positions corresponding to each card hole on the inner cavity side wall of the open end of the end cover shell, and the chucks in each elastic buckle unit slide in their respective corresponding horizontal grooves;

[0023] The end of the handle rod away from the chuck slides through the side wall of the end cover shell;

[0024] One end of the return spring is connected to the end of the chuck, and the other end is connected to the end of the horizontal groove.

[0025] As an alternative embodiment of the technical solution of this invention document, the end of the chuck away from the return spring faces the corresponding elastic sealing diaphragm;

[0026] The end of the chuck away from the return spring is movably snapped into the corresponding card hole.

[0027] As an alternative embodiment of the technical solution of this invention document, after the chuck in the elastic snap unit is snapped into the corresponding card hole, the end of the output interface abuts tightly against the annular sealing gasket.

[0028] As an alternative embodiment of the technical solution of this invention document, the telescopic module further includes a directional ring sleeve. An insulating bottom cylinder is slidably inserted into the inner cavity of the directional ring sleeve, and an insulating reciprocating rod is hermetically and slidably inserted into the end of the insulating bottom cylinder;

[0029] A guiding slider is connected to the end of the insulating reciprocating rod extending into the inner cavity of the insulating bottom cylinder;

[0030] A limiting straight groove adapted to it is opened at the position corresponding to the guiding slider on the inner cavity side wall of the insulating bottom cylinder, and the end of the guiding slider away from the insulating reciprocating rod slides in the limiting straight groove;

[0031] A fixing frame is connected to the side wall of the directional ring sleeve, and the end of the fixing frame away from the directional ring sleeve is connected to the inner cavity side wall of the output interface.

[0032] As an alternative embodiment of the technical solution of this invention document, the end of the insulating reciprocating rod away from the guiding slider is connected to one of the elastic sealing diaphragms, and the end of the insulating bottom cylinder away from the insulating reciprocating rod is connected to the other elastic sealing diaphragm.

[0033] As an alternative embodiment of the technical solution of this invention document, the signal transmitter is connected into the inner cavity of the insulating bottom cylinder;

[0034] The switch moving piece and the switch static terminal are both located in the inner cavity of the insulating bottom cylinder, and the switch moving piece is connected to the end of the insulating reciprocating rod extending into the inner cavity of the insulating bottom cylinder

[0035] The switch static terminal is connected to the inner cavity side wall of the insulating bottom cylinder, and the surface of the side wall of the switch static terminal is flush with the surface of the inner cavity side wall of the insulating bottom cylinder;

[0036] The free end of the switch moving piece is closely attached to the inner cavity side wall of the insulating bottom cylinder;

[0037] The switch moving piece and the switch static terminal are arranged oppositely, and when the elastic sealing diaphragm is in the initial relaxed state, the switch moving piece and the switch static terminal do not contact each other.

[0038] Beneficial effects: One or more technical solutions provided in the technical solution of the present invention have at least the following technical effects or advantages: 1. During the construction process of the high-pressure jet grouting pile, when the nozzle unit in the end structure located at the output end of the rod structure is blocked, resulting in an increase in the internal hydraulic pressure of the rod structure and exceeding the preset upper pressure limit, when the hydraulic pressure drives the two elastic sealing diaphragms to undergo elastic deformation and the telescopic module extends, the switch moving piece contacts the switch static terminal and triggers the signal transmitter to turn on, and then the signal transmitter emits a fault alarm signal externally, enabling the operator to quickly detect abnormal conditions during the construction process and immediately take measures to stop the machine to avoid further deterioration of the situation, thereby ensuring the safe progress of the high-pressure jet grouting pile construction.

[0039] 2. When the nozzle unit in the end structure is blocked, as the internal hydraulic pressure of the rod structure gradually increases and the hydraulic pressure drives the two elastic sealing diaphragms to undergo elastic deformation and the telescopic module extends, the deformed elastic sealing diaphragms gradually push the chuck out of the chuck hole under the action of the increasing hydraulic pressure. When the chuck disengages from the chuck hole, the end cover shell falls off from the output interface, allowing the cement slurry to be discharged through the gap between the output interface and the end cover shell. Thus, when a blockage occurs during the construction process and the operator fails to take timely measures to stop the machine, the pressure relief process is automatically completed, preventing further increase in pressure, and further enhancing the construction safety.

[0040] 3. During the construction process, when a blockage causes the cover assembly to disengage from the output interface in the rod structure to complete the pressure relief process, under the restrictive action of the towing rope, the disengaged cover assembly is prevented from being left in the blocked hole.

[0041] 4. After the machine is stopped, the device with the blocked hole is taken out of the drill hole, the mounting seat is disassembled from the end of the cover assembly disengaged from the output interface, and then the end cover shell in the new cover assembly is sleeved outside the output interface again. When the chuck in the elastic snap unit aligns with the chuck hole on the side wall of the output interface, under the elastic force of the return spring, the chuck quickly snaps into the chuck hole, facilitating the disassembly and replacement operation of the blocked cover assembly and enabling the device to be put into the construction process of the high-pressure jet grouting pile again. Description of the Drawings

[0042] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0043] Figure 2 It is a side view of the overall structure of the present invention.

[0044] Figure 3 For the present invention Figure 2 A partial enlarged schematic view of part A.

[0045] Figure 4 It is a schematic diagram of the internal structure of the terminal structure in the present invention.

[0046] Figure 5 For the present invention Figure 4 It is a partially enlarged schematic diagram of part B in the present invention.

[0047] Figure 6 It is a schematic diagram of the internal structure of the output interface in the present invention.

[0048] Figure 7 It is a sectional view of the terminal structure in the present invention.

[0049] Figure 8 For the present invention Figure 7 It is a partially enlarged schematic diagram of part C in the present invention.

[0050] Figure 9 For the present invention Figure 8 It is a partially enlarged schematic diagram of part D in the present invention.

[0051] Figure 10 For the present invention Figure 8 It is a partially enlarged schematic diagram of part E in the present invention.

[0052] Explanation of the reference numerals in the figure:

[0053] 10. Hollow jetting rod;

[0054] 201. End housing; 202. Nozzle; 203. Handle rod; 204. Insulating bottom cylinder; 205. Insulating reciprocating rod; 206. Directional ring sleeve; 207. Elastic sealing diaphragm; 208. Ring-shaped gasket; 209. Nozzle interface; 210. Chuck; 211. Return spring; 212. Static switch terminal; 213. Moving switch piece; 214. Signal transmitter;

[0055] 30. Output interface;

[0056] 40. Towing rope. Specific embodiments

[0057] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0058] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0059] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0060] Referring to Figures 1 to 7 , an embodiment of the present invention provides a high-pressure jet grouting device for building construction, including a rod body structure and a terminal structure. The terminal structure includes a cover assembly arranged at the output end of the rod body structure. The cover assembly includes two elastic buckle units and a plurality of nozzle units. At the position corresponding to each elastic buckle unit on the side wall of the output end of the rod body structure, a card hole is provided for the elastic buckle unit to buckle into, and the cover assembly is buckled and connected to the output end of the rod body structure through the elastic buckle unit;

[0061] Inside the output end of the rod body structure, an elastic sealing diaphragm 207 is connected at the position corresponding to each card hole, and the elastic sealing diaphragm 207 blocks the opening at the end of the card hole. A telescopic module is provided between the two elastic sealing diaphragms 207. The telescopic module includes a signal transmitter 214, a switch static terminal 212 connected to the bottom cylinder of the telescopic module, and a switch moving piece 213 connected to the reciprocating rod of the telescopic module;

[0062] When the nozzle unit is blocked, causing the internal hydraulic pressure of the rod body structure to increase and exceed the preset pressure upper limit, driving the two elastic sealing diaphragms 207 to elastically deform and making the telescopic module extend, the switch moving piece 213 contacts the switch static terminal 212 and triggers the signal transmitter 214 to turn on.

[0063] During the construction of high-pressure jet grouting piles, when the nozzle unit in the end structure located at the output end of the rod structure becomes blocked, causing the internal hydraulic pressure of the rod structure to increase and exceed the preset upper pressure limit, when the hydraulic pressure drives the two elastic sealing diaphragms 207 to undergo elastic deformation and the telescopic module extends, the switch moving piece 213 contacts the switch static terminal 212 and triggers the signal transmitter 214 to turn on. Then, the signal transmitter 214 sends a fault alarm signal to the external main controller, enabling the operator to quickly detect abnormal situations during the construction process and immediately take measures to stop the machine, so as to avoid the situation from deteriorating further, thereby ensuring the safe progress of the high-pressure jet grouting pile construction. The main controller mentioned in this article is a common prior art such as a computer that plays a control role, and will not be elaborated here.

[0064] Referring to Figures 1 to 7 , the embodiment of the present invention provides a high-pressure jet grouting device for building construction. The rod structure includes a hollow jet grouting rod 10 and an output interface 30 connected to the output port of the hollow jet grouting rod 10;

[0065] The card hole is arranged on the side wall of the output interface 30;

[0066] The elastic sealing diaphragm 207 is connected to the inner cavity side wall of the output interface 30, and the elastic sealing diaphragm 207 is preferably made of elastic rubber material;

[0067] The rod structure further includes a plurality of traction ropes 40, and mounting seats are connected to both ends of each traction rope 40. The traction rope 40 is preferably a steel wire rope;

[0068] A circular storage groove for accommodating the traction rope 40 is opened at the bottom end of the hollow jet grouting rod 10.

[0069] Referring to Figures 1 to 7 , the embodiment of the present invention provides a high-pressure jet grouting device for building construction. The cover assembly includes an end cover 201, and a ring-shaped gasket 208 is connected to the end of the inner cavity of the open end of the end cover 201;

[0070] The nozzle units are arranged in a circular array on the cover assembly;

[0071] The nozzle unit includes a nozzle interface 209 fixedly communicated with the side wall of the end cover 201 in the cover assembly;

[0072] A nozzle 202 is provided on the nozzle interface 209, and the nozzle 202 is threadedly connected to the nozzle interface 209;

[0073] The mounting seat connected to one end of the traction rope 40 is detachably connected to the end of the circular storage groove, and the mounting seat connected to the other end of the traction rope 40 is detachably connected to the end of the end cover 201.

[0074] Referring to Figure 7and Figure 8 In an embodiment of the present invention, a high-pressure jet grouting device for building construction is provided. The elastic buckle unit includes a chuck 210. At the position corresponding to each card hole on the inner cavity side wall of the open end of the end cover 201, a horizontal groove adapted to the chuck 210 is provided, and the chuck 210 in each elastic buckle unit slides in the corresponding horizontal groove respectively;

[0075] One end of the chuck 210 away from the return spring 211 faces the corresponding elastic sealing diaphragm 207;

[0076] One end of the chuck 210 away from the return spring 211 is movably buckled into the corresponding card hole. After the chuck 210 in the elastic buckle unit is buckled into the corresponding card hole, the end of the output interface 30 abuts tightly against the annular sealing gasket 208;

[0077] A handle rod 203 is connected to the end of the chuck 210, and the end of the handle rod 203 away from the chuck 210 slides through the side wall of the end cover 201;

[0078] A return spring 211 is sleeved on the outer periphery of the handle rod 203. One end of the return spring 211 is connected to the end of the chuck 210, and the other end is connected to the end of the horizontal groove.

[0079] When the cover assembly is installed on the output interface 30 in the rod structure through the elastic buckle unit, a pressure relief channel is formed between the end cover 201 and the output interface 30;

[0080] When the nozzle unit in the end structure is blocked, as the hydraulic pressure inside the rod structure gradually increases and causes the two elastic sealing diaphragms 207 to undergo elastic deformation and the telescopic module to elongate, the deformed elastic sealing diaphragm 207 gradually pushes the chuck 210 out of the card hole under the action of the increasing hydraulic pressure. When the chuck 210 disengages from the card hole, the end cover 201 falls off from the output interface 30, allowing the cement slurry to be discharged through the gap between the output interface 30 and the end cover 201. Thus, when a blockage occurs during construction and the operator fails to take timely measures to stop the machine, the pressure relief process is automatically completed, avoiding further increase in pressure, which is beneficial to further improving the construction safety.

[0081] During the construction process, when a blockage occurs and the cover assembly disengages from the output interface 30 in the rod structure to complete the pressure relief process, under the restraining action of the towing rope 40, the disengaged cover assembly is prevented from falling into the blocked hole.

[0082] After shutdown, take out the device with blocked holes from the drill hole, remove the mounting base from the end of the cover assembly detached from the output interface 30, then put the end housing 201 in the new cover assembly back over the output interface 30. When the chuck 210 in the elastic snap unit aligns with the snap hole on the side wall of the output interface 30, under the elastic force of the return spring 211, the chuck 210 quickly snaps into the snap hole, thus facilitating the disassembly and replacement operation of the blocked cover assembly by people and enabling the device to be put into the construction process of high-pressure jet grouting piles again.

[0083] Refer to Figures 4 to 10 , an embodiment of the present invention provides a high-pressure jet grouting device for building construction. The telescopic module further includes an orientation ring sleeve 206. An insulating bottom cylinder 204 is slidably inserted into the inner cavity of the orientation ring sleeve 206. An insulating reciprocating rod 205 is hermetically and slidably inserted into the end of the insulating bottom cylinder 204, and both the insulating reciprocating rod 205 and the insulating bottom cylinder 204 are made of insulating materials;

[0084] One end of the insulating reciprocating rod 205 extending into the inner cavity of the insulating bottom cylinder 204 is connected with a guiding slider;

[0085] A limiting straight groove adapted to it is provided at the position corresponding to the guiding slider on the inner cavity side wall of the insulating bottom cylinder 204, and one end of the guiding slider away from the insulating reciprocating rod 205 slides in the limiting straight groove;

[0086] One end of the insulating reciprocating rod 205 away from the guiding slider is connected with one of the elastic sealing diaphragms 207, and one end of the insulating bottom cylinder 204 away from the insulating reciprocating rod 205 is connected with the other elastic sealing diaphragm 207;

[0087] A fixing frame is connected to the side wall of the orientation ring sleeve 206, and one end of the fixing frame away from the orientation ring sleeve 206 is connected with the inner cavity side wall of the output interface 30;

[0088] The signal transmitter 214 is connected into the inner cavity of the insulating bottom cylinder 204. The signal transmitter 214 is a wireless transmitting module. A battery is installed on the wireless transmitting module. When the switch moving piece 213 contacts the switch static terminal 212, the series circuit composed of the wireless transmitting module, the battery, the switch moving piece 213, and the switch static terminal 212 is turned on, and then the battery supplies power to the wireless transmitting module and turns on the signal transmitter 214;

[0089] Both the switch moving piece 213 and the switch static terminal 212 are located in the inner cavity of the insulating bottom cylinder 204, and the switch moving piece 213 is connected with one end of the insulating reciprocating rod 205 extending into the inner cavity of the insulating bottom cylinder 204;

[0090] The static switch terminal 212 is connected to the inner cavity side wall of the insulating bottom cylinder 204, and the side wall surface of the static switch terminal 212 is flush with the inner cavity side wall surface of the insulating bottom cylinder 204;

[0091] The free end of the movable switch piece 213 is closely attached to the inner cavity side wall of the insulating bottom cylinder 204;

[0092] The movable switch piece 213 and the static switch terminal 212 are arranged oppositely, and when the elastic blocking diaphragm 207 is in the initial relaxed state, the movable switch piece 213 and the static switch terminal 212 do not contact each other.

[0093] The detachable connection methods mentioned in this article are bolt connection or snap connection.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-pressure jet grouting device for building construction, characterized in that: It includes a rod structure and a terminal structure. The terminal structure includes a cover assembly arranged at the output end of the rod structure. The cover assembly includes two elastic buckle units and a plurality of nozzle units. At the position corresponding to each elastic buckle unit on the side wall of the output end of the rod structure, there is a card hole for the elastic buckle unit to buckle into, and the cover assembly is buckled and connected to the output end of the rod structure through the elastic buckle unit; Inside the output end of the rod structure, at the position corresponding to each card hole, there is an elastic blocking diaphragm (207) connected, and the elastic blocking diaphragm (207) blocks the opening at the end of the card hole. Between the two elastic blocking diaphragms (207), there is a telescopic module. The telescopic module includes a signal transmitter (214), a switch static terminal (212) connected to the bottom cylinder of the telescopic module, and a switch moving piece (213) connected to the reciprocating rod of the telescopic module; The rod structure includes a hollow rotary spray rod (10) and an output interface (30) connected to the output port of the hollow rotary spray rod (10); The card holes are arranged on the side wall of the output interface (30); The elastic blocking diaphragm (207) is connected to the inner cavity side wall of the output interface (30); The rod structure further includes a plurality of traction ropes (40), and both ends of each traction rope (40) are connected with mounting seats; At the bottom end of the hollow rotary spray rod (10), there is a circular storage groove for accommodating the traction rope (40); The mounting seat connected to one end of the traction rope (40) is detachably connected to the end of the circular storage groove, and the mounting seat connected to the other end of the traction rope (40) is detachably connected to the end of the end cover shell (201); When the nozzle unit is blocked, resulting in an increase in the internal hydraulic pressure of the rod structure and exceeding the preset pressure upper limit, driving the two elastic blocking diaphragms (207) to undergo elastic deformation and causing the telescopic module to elongate, the switch moving piece (213) contacts the switch static terminal (212) and triggers the signal transmitter (214) to turn on; When the nozzle unit in the terminal structure has a blocked hole, as the internal hydraulic pressure of the rod structure gradually increases, and during the process of the hydraulic pressure driving the two elastic blocking diaphragms (207) to undergo elastic deformation and causing the telescopic module to elongate, the deformed elastic blocking diaphragm (207) gradually pushes the chuck (210) out of the card hole under the action of the increasing hydraulic pressure.

2. The high-pressure jet grouting device for building construction according to claim 1, wherein: The cover assembly includes an end cover shell (201), and at the end of the inner cavity of the open end of the end cover shell (201), there is an annular sealing gasket (208) connected; The nozzle units are arranged in a circular array on the cover assembly; The nozzle unit includes a nozzle interface (209) fixedly communicated with the side wall of the end cover shell (201) in the cover assembly; On the nozzle interface (209), there is a nozzle (202), and the nozzle (202) is threadedly connected to the nozzle interface (209); 3. The high-pressure jet grouting device for building construction according to claim 2, wherein: The elastic buckle unit includes a chuck (210), and at the end of the chuck (210), there is a handle rod (203) connected; A return spring (211) is sleeved on the outer periphery of the handle rod (203).

4. The high-pressure jet grouting device for building construction according to claim 3, wherein: On the inner cavity side wall at the opening end of the end housing (201), horizontal grooves adapted to the latch heads (210) are provided at positions corresponding to each card hole, and the latch heads (210) in each of the elastic buckle units slide in their respective corresponding horizontal grooves; One end of the handle rod (203) away from the latch head (210) slides through the side wall of the end housing (201); One end of the return spring (211) is connected to the end of the latch head (210), and the other end is connected to the end of the horizontal groove.

5. The high-pressure jet grouting device for building construction according to claim 3, characterized in that: The end of the latch head (210) away from the return spring (211) faces the corresponding elastic blocking diaphragm (207); The end of the latch head (210) away from the return spring (211) is movably buckled into the corresponding card hole.

6. The high-pressure rotary jet grouting device for building construction according to claim 5, characterized in that: After the latch head (210) in the elastic buckle unit is buckled into the corresponding card hole, the end of the output interface (30) abuts tightly against the annular sealing gasket (208).

7. The high-pressure jet grouting device for building construction according to claim 1, characterized in that: The telescopic module further includes an orientation ring sleeve (206). An insulating bottom cylinder (204) is slidably inserted into the inner cavity of the orientation ring sleeve (206), and an insulating reciprocating rod (205) is hermetically slidably inserted into the end of the insulating bottom cylinder (204); One end of the insulating reciprocating rod (205) extending into the inner cavity of the insulating bottom cylinder (204) is connected with a guiding slider; A limiting straight groove adapted to the guiding slider is provided on the inner cavity side wall of the insulating bottom cylinder (204) at a position corresponding to the guiding slider, and one end of the guiding slider away from the insulating reciprocating rod (205) slides in the limiting straight groove; A fixing frame is connected to the side wall of the orientation ring sleeve (206), and one end of the fixing frame away from the orientation ring sleeve (206) is connected to the inner cavity side wall of the output interface (30).

8. The high-pressure jet grouting device for building construction according to claim 7, characterized in that: One end of the insulating reciprocating rod (205) away from the guiding slider is connected to one of the elastic blocking diaphragms (207), and one end of the insulating bottom cylinder (204) away from the insulating reciprocating rod (205) is connected to the other elastic blocking diaphragm (207).

9. The high-pressure rotary jet grouting device for building construction according to claim 7, wherein: The signal transmitter (214) is connected in the inner cavity of the insulating bottom cylinder (204); The switch moving piece (213) and the switch static terminal (212) are both located in the inner cavity of the insulating bottom cylinder (204), and the switch moving piece (213) is connected to one end of the insulating reciprocating rod (205) extending into the inner cavity of the insulating bottom cylinder (204) The switch static terminal (212) is connected to the inner cavity side wall of the insulating bottom cylinder (204), and the surface of the side wall of the switch static terminal (212) is flush with the surface of the inner cavity side wall of the insulating bottom cylinder (204); The free end of the switch moving piece (213) is closely attached to the inner cavity side wall of the insulating bottom cylinder (204); The switch moving piece (213) and the switch static terminal (212) are arranged oppositely, and when the elastic blocking diaphragm (207) is in the initial relaxed state, the switch moving piece (213) and the switch static terminal (212) do not contact each other.

Images