Cement grouting construction device

Abstract

The invention relates to the technical field of cement grouting construction, in particular to a cement grouting construction device, a one-way high-pressure impact-extrusion grouting head and a rack, the one-way high-pressure impact-extrusion grouting head is installed on the rack through a grouting cylinder, an upper rotating part and a lower rotating part are driven by a driving mechanism to rotate oppositely, and the one-way high-pressure impact-extrusion grouting head is driven to rotate oppositely in the relative rotating state. And in the process that the telescopic head on the communicating pipe is placed into the through hole, the transverse vibrating head can also complete transverse vibrating of the cement grouting material at different heights, and the slurry on the lower portion is in a dense state under bidirectional vibrating, so that the cement grouting material is fully vibrated, and the construction efficiency is improved. The continuous grouting action enables the grouting pressure to be kept stable, the multiple longitudinal vibrating heads and the multiple transverse vibrating heads can fully cover the grouting interval within the vibrating path range, cement slurry can be rapidly supplemented and grouted into collapsed holes, grouting dead corners are avoided, and the compactness of the cement slurry is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cement grouting construction, in particular to a cement grouting construction device. Background Art

[0002] The grouting process of deep foundation pit support usually uses cement slurry with good fluidity and solidification properties. For conditions with poor pressure seepage such as soft soil or river sand, the existing technology has a combined process of hole-fixing water-stopping grouting and high-pressure extrusion grouting. The grouting pipe is poured into the borehole in stages, and with the help of the epoxy secretion effect of the high-pressure extrusion grouting composite slurry carrier, the unfavorable geology can be effectively penetrated and infiltrated and consolidated by the epoxy slurry.

[0003] For example, the Chinese patent application number CN201710049912.1 discloses a method for grouting poor geological bodies under pressure seepage conditions. In the first stage, a drilling and grouting process of "drilling and grouting in one, from top to bottom, high-pressure extrusion" is used to effectively fix the hole and stop the water in the grouting hole section of the poor geological body under pressure seepage conditions; in the second stage, a grouting process of "from bottom to top, plug closure, strong pressure extrusion" is used to uniformly and effectively perform high-pressure squeezing, pressure infiltration, and infiltration grouting on the poor geological body under pressure seepage conditions. However, for poor geological bodies under pressure seepage conditions, even if the segmented grouting method is adopted, the hole will still collapse in the borehole under high-pressure extrusion, and the grouting pressure at different heights is difficult to maintain stable, resulting in grouting dead angles at the collapsed hole; at the same time, during the segmented grouting process, due to the reciprocating implementation of grouting and grouting, the vibration of the rear grouting and the front grouting is discontinuous, resulting in differences in the density of cement slurry in different sections, affecting the support strength. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a cement grouting construction device to solve the technical problems in the prior art that the grouting pressure at different heights is difficult to maintain constant, resulting in grouting dead corners at the collapsed hole and differences in the density of cement slurry in different sections.

[0005] Based on the above purpose, the present invention provides a cement grouting construction device, including a unidirectional high-pressure extrusion grouting head and a frame, wherein the unidirectional high-pressure extrusion grouting head is installed on the frame through a grouting tube, and a grouting pressure tank connected to the grouting tube is provided on the frame, and a thread is provided on the outer surface of the unidirectional high-pressure extrusion grouting head, and the unidirectional high-pressure extrusion grouting head is connected to the grouting tube through a connecting head, and the connecting head is rotatably installed on the frame, and the cement grouting construction device also includes: A guide side plate, the guide side plate is detachably mounted on the lower end of the connector, and a lifting ring is slidably provided on the guide side plate; An upper rotating part, wherein the upper rotating part is threadedly mounted on the outer surface of the one-way high-pressure extrusion grouting head; A lower rotating part, wherein the lower rotating part is rotatably mounted on the upper rotating part, and the lifting ring is fixedly mounted on the outer side of the lower rotating part; A bidirectional vibrating mechanism for vibrating the grouting material, wherein the bidirectional vibrating mechanism is installed on the upper rotating part and the lower rotating part; A driving mechanism for driving the upper rotating part and the lower rotating part to rotate in opposite directions relative to each other, wherein the driving mechanism is installed on the frame.

[0006] Furthermore, the driving mechanism comprises: A driving motor, wherein the driving motor is mounted on the frame; A worm gear machine, the worm gear machine is rotatably mounted on the frame, and the end of the worm gear machine is connected to the output end of the driving motor; There are two worm wheels, both of which are meshed with the worm gear, one of which is mounted on the grouting cylinder, and the other is mounted on the frame through a rotating shaft; Gear 1, the gear 1 is fixedly connected to the upper end of the connector; Gear 2, the gear 2 is installed at the lower end of the rotating shaft, and the gear 2 is meshed with the gear 1.

[0007] Furthermore, a wave-shaped guide groove is provided on the surface of the upper rotating part, a slide groove is provided on the surface of the upper rotating part below the guide groove, and the lower end of the upper rotating part is rotatably mounted on the upper end of the upper rotating part.

[0008] Furthermore, the surface of the lower rotating part is evenly distributed with grouting channels in an annular direction, and the top of the lower rotating part is evenly distributed with through holes, the upper ends of the through holes are chamfered and expanded, and the lower ends of the through holes extend to the grouting channels.

[0009] Furthermore, the bidirectional vibration mechanism comprises: Sliding balls, there are a plurality of sliding balls, and the plurality of sliding balls are all slidably disposed in the guide groove; A connecting pipe, the upper end of which is fixedly connected to the sliding ball, the connecting pipe is slidably arranged in the sliding groove, the connecting pipe is also slidably arranged in the through hole, and the side end of the connecting pipe is movably provided with a telescopic head through an elastic member; A longitudinal vibrating head, which is installed at the lower end of the connecting pipe and is also slidably disposed in the grouting flow channel; A transverse vibrating head is slidably arranged in the longitudinal vibrating head, and the connecting pipe is sealed and filled with transmission fluid between the transverse vibrating head and the longitudinal vibrating head.

[0010] Furthermore, the elastic member is a spring, and there are a plurality of the springs, one end of a plurality of the springs is connected to the telescopic head, and the other end of a plurality of the springs is connected to the inner wall of the connecting pipe.

[0011] Furthermore, the slurry outlet at the lower end of the one-way high-pressure extrusion grouting head is arranged laterally.

[0012] Furthermore, a water blocking plate is clamped at the lower end of the guide side plate, and the middle part of the water blocking plate abuts against the bottom of the unidirectional high-pressure extrusion grouting head, and the abutment height is lower than the lower end slurry outlet of the unidirectional high-pressure extrusion grouting head.

[0013] Furthermore, a protective sleeve is installed on the lifting ring.

[0014] Furthermore, the inner wall of the protective sleeve cooperates with the outer edge of the upper rotating part, and the protective sleeve is a telescopic structure with adjustable height.

[0015] The beneficial effects of the present invention are as follows: by adopting a cement grouting construction device of the present invention, the driving mechanism drives the upper rotating part and the lower rotating part to rotate in opposite directions. Under the relative rotation state, the longitudinal vibrating head can complete the longitudinal vibration of the cement grouting material at different heights, and when the telescopic head on the connecting pipe is placed into the through hole, the transverse vibrating head can also complete the transverse vibration of the cement grouting material at different heights. Under the two-way vibration, the lower slurry is in a dense state, and the continuous grouting action keeps the grouting pressure stable. Within the vibration path, a plurality of longitudinal vibrating heads and transverse vibrating heads can fully cover the grouting interval, so that the cement slurry can be quickly filled into the collapsed hole, avoiding the occurrence of grouting dead corners, and ensuring the density of the cement slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A magnified view of the structure at center A; Figure 3 It is a structural schematic diagram of the frame in the present invention; Figure 4 It is a structural schematic diagram of the driving mechanism in the present invention; Figure 5 It is a schematic diagram of the assembly of the lifting ring and the protective sleeve in the present invention; Figure 6 It is a structural schematic diagram of the lifting ring in the present invention; Figure 7 It is a schematic diagram of the assembly of some structures in the present invention; Figure 8 It is a structural schematic diagram of the upper rotating part in the present invention; Fig. 9 It is a schematic diagram of the assembly of the bidirectional vibrating mechanism and the lower rotating part in the present invention; Fig.10 It is a schematic diagram of the internal structure of the bidirectional vibrating mechanism in the present invention.

[0018] The markings in the figure are: 1. One-way high-pressure extrusion grouting head; 2. Frame; 3. Grouting tube; 4. Grouting pressure tank; 5. Connector; 6. Guide side plate; 7. Lifting ring; 8. Upper rotating part; 9. Lower rotating part; 10. Bidirectional vibrating mechanism; 101. Sliding ball; 102. Connecting pipe; 103. Elastic member; 104. Telescopic head; 105. Longitudinal vibrating head; 106. Horizontal vibrating head; 11. driving mechanism; 111. driving motor; 112. worm; 113. worm wheel; 114. rotating shaft; 115. gear 1; 116. gear 2; 12. Guide groove; 13. Slide groove; 14. Grouting flow channel; 15. Through hole; 16. Slurry outlet; 17. Water blocking plate; 18. Protective sleeve. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0020] The embodiment of the present invention provides a cement grouting construction device, such as Figure 1-10 As shown, it includes a one-way high-pressure extrusion grouting head 1 and a frame 2, the one-way high-pressure extrusion grouting head 1 is installed on the frame 2 through a grouting tube 3, the frame 2 is provided with a grouting pressure tank 4 connected to the grouting tube 3, the outer surface of the one-way high-pressure extrusion grouting head 1 is provided with a thread, the one-way high-pressure extrusion grouting head 1 is connected to the grouting tube 3 through a connector 5, and the connector 5 is rotatably installed on the frame 2, and the cement grouting construction device also includes: A guide side plate 6, the guide side plate 6 is detachably mounted on the lower end of the connector 5, and a lifting ring 7 is slidably provided on the guide side plate 6; An upper rotating part 8, wherein the upper rotating part 8 is threadedly mounted on the outer surface of the one-way high-pressure extrusion grouting head 1; A lower rotating part 9, wherein the lower rotating part 9 is rotatably mounted on the upper rotating part 8, and the lifting ring 7 is fixedly mounted on the outer side of the lower rotating part 9; A bidirectional vibrating mechanism 10 for vibrating the grouting material, wherein the bidirectional vibrating mechanism 10 is installed on the upper rotating part 8 and the lower rotating part 9; A driving mechanism 11 is used for driving the upper rotating part 8 and the lower rotating part 9 to rotate in opposite directions relative to each other. The driving mechanism 11 is installed on the frame 2 .

[0021] In this embodiment, a wave-shaped guide groove 12 is provided on the surface of the upper rotating part 8, a slide groove 13 is provided on the surface of the upper rotating part 8 below the guide groove 12, and the lower end of the upper rotating part 8 is rotatably mounted on the upper end of the upper rotating part 8.

[0022] In this embodiment, the surface of the lower rotating part 9 is also evenly distributed with grouting channels 14 in an annular direction, and the top of the lower rotating part 9 is evenly distributed with through holes 15. The upper ends of the through holes 15 are chamfered and expanded, and the lower ends of the through holes 15 extend to the grouting channels 14.

[0023] In this embodiment, the bidirectional vibrating mechanism 10 includes: Sliding balls 101, there are a plurality of sliding balls 101, and the plurality of sliding balls 101 are all slidably disposed in the guide groove 12; A connecting pipe 102, the upper end of which is fixedly connected to the sliding ball 101, the connecting pipe 102 is slidably disposed in the slide groove 13, and the connecting pipe 102 is also slidably disposed in the through hole 15, and a telescopic head 104 is movably disposed at the side end of the connecting pipe 102 through an elastic member 103; A longitudinal vibrating head 105, which is installed at the lower end of the connecting pipe 102, and is also slidably disposed in the grouting flow channel 14; The transverse vibrating head 106 is slidably disposed in the longitudinal vibrating head 105 , and the connecting pipe 102 is sealed and filled with transmission fluid between the transverse vibrating head 106 and the longitudinal vibrating head 105 .

[0024] In this embodiment, if Figure 4 As shown, the driving mechanism 11 comprises: A driving motor 111, wherein the driving motor 111 is mounted on the frame 2; A worm gear 112, wherein the worm gear 112 is rotatably mounted on the frame 2, and an end of the worm gear 112 is connected to an output end of the driving motor 111; A worm gear 113, wherein there are two worm gears 113, both of which are meshed with the worm gear 112, wherein one of the worm gears 113 is mounted on the grouting cylinder 3, and the other worm gear 113 is mounted on the frame 2 via a rotating shaft 114; Gear 1 115, the gear 1 15 is fixedly connected to the upper end of the connector 5; Gear 2 116 , the gear 2 116 is installed at the lower end of the rotating shaft 114 , and the gear 2 116 is meshed with the gear 1 115 .

[0025] The method for using the cement grouting construction device comprises the following steps: S1. Selection and installation: Select a one-way high-pressure extrusion grouting head 1 with a length that matches the depth of the deep foundation pit drilling, install it at the lower end of the grouting tube 3, select a guide side plate 6 with the same height, and install it at the lower end of the connecting head 5; S2, grouting preparation: the device is moved to the deep foundation pit support drilling position by the associated transfer equipment, and the one-way high-pressure extrusion grouting head 1 is placed in the borehole through the lifting power source control device on the transfer equipment, and the frame 2 is placed in the grouting entrance area of ​​the borehole; S3, adjusting the vibration height: driving the lower rotating part 9 to the lowest point on the one-way high-pressure extrusion grouting head 1 through the driving mechanism 11; S4, grouting construction: The grouting tube 3 is filled with the configured cement stabilized slurry through the grouting pressure tank 4, and the bottom side of the unidirectional high-pressure extrusion grouting head 1 is continuously grouting the bottom of the borehole, and the upper rotating part 8 and the lower rotating part 9 are driven by the driving mechanism 11 to rotate in the opposite direction, and the bidirectional vibrating mechanism 10 is used to perform horizontal and vertical bidirectional vibration on the poured cement slurry. At the same time, the lower rotating part 9 will also perform a uniform upward movement to maintain the consistency of the density of the cement slurry in the borehole; S5, hole sealing and maintenance: clean the cement slurry attached to the surface of the one-way high-pressure extrusion grouting head 1, and seal the drilled hole.

[0026] Among them, in step S3, the specific process is: The lower end outlet of the unidirectional high-pressure extrusion grouting head 1 pours cement slurry into the borehole, and at the same time, the output end of the driving motor 111 drives the worm 112 to rotate, driving the worm wheels 113 on both sides to rotate in the same direction, and the worm wheel 113 on one side drives the grouting tube 3 to rotate in one direction, and the worm wheel 113 on the other side drives the gear 1 115 and the connector 5 to rotate synchronously in the opposite direction through the rotating shaft 114 and the gear 2 116; The grouting tube 3 drives the unidirectional high-pressure extrusion grouting head 1 directly below to rotate synchronously. Under the guidance of the guide side plate 6, the guide side plate 8 performs a synchronous action of rising and rotating. The connecting head 5 drives the lifting ring 7 and the lower rotating part 9 to rise and rotate synchronously through the guide side plate 6. The upper rotating part 8 and the lower rotating part 9 turn in opposite directions. In the state of relative rotation, the sliding ball 101 guides and slides in the guide groove 12, and drives the longitudinal vibrating head 105 to reciprocate and lift in the grouting flow channel 14 through the connecting pipe 102, thereby completing the longitudinal vibration of the cement grouting material at different heights; At the same time, when the telescopic head 104 on the connecting pipe 102 is placed in the through hole 15, the transmission fluid in the connecting pipe 102 pushes the transverse vibrating head 106 to extend transversely from the longitudinal vibrating head 105. After the telescopic head 104 extends out of the through hole 15 again under the elastic force of the elastic member 103, the transverse vibrating head 106 extends into the longitudinal vibrating head 105 again, thereby forming a reciprocating telescopic action of the transverse vibrating head 106, thereby completing the transverse vibration of the cement grouting material at different heights. During the ascending process of the upper rotating part 8 and the lower rotating part 9, the liquid level of the injected cement slurry is always kept below the height of the lifting ring 7. Since the cement slurry at the bottom of the borehole has completed bidirectional vibration during the grouting process, the lower slurry is already in a dense state, and the continuous grouting action keeps the grouting pressure stable. Even if the inner wall of the borehole collapses due to the grouting high pressure during the subsequent grouting process, a number of longitudinal vibrating heads 105 and transverse vibrating heads 106 within the vibration path can fully cover the grouting interval, so that the cement slurry can be quickly replenished in the collapsed hole to avoid grouting dead corners.

[0027] In this embodiment, if Fig.10 As shown, the elastic member 103 is a spring, and there are several springs. One end of several of the springs is connected to the telescopic head 104, and the other end of several of the springs is connected to the inner wall of the connecting tube 102, so that after the telescopic head 104 slides out of the through hole 15, it automatically extends out of the connecting tube 102.

[0028] In this embodiment, if Figure 2 As shown, the slurry outlet 16 at the lower end of the one-way high-pressure extrusion grouting head 1 is arranged laterally. The one-way high-pressure extrusion grouting head 1 in the rotating state can make the slurry evenly grouted around the bottom of the borehole to avoid aggravating the risk of collapse of the bottom of the borehole.

[0029] In this embodiment, if Figure 2As shown, a water blocking plate 17 is clamped at the lower end of the guide side plate 6, and the middle part of the water blocking plate 17 abuts against the bottom of the one-way high-pressure extrusion grouting head 1, and the abutting height is lower than the lower end slurry outlet 16 of the one-way high-pressure extrusion grouting head 1. After the cement grouting in the drill hole is completed, the one-way high-pressure extrusion grouting head 1 is lifted. Under the resistance of the cement slurry, the water blocking plate 17 is disengaged from the guide side plate 6, and the cement slurry in the one-way high-pressure extrusion grouting head 1 can be quickly filled into the middle cavity.

[0030] In this embodiment, if Figure 1 As shown, a protective sleeve 18 is installed on the lifting ring 7, and the inner wall of the protective sleeve 18 cooperates with the outer edge of the upper rotating part 8. The protective sleeve 18 is a telescopic structure with adjustable height to prevent cement slurry or collapsed material in the drilled hole from falling onto the lifting ring 7 and affecting the stable operation of the bidirectional vibration mechanism 10.

[0031] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cement grouting construction device, comprising a unidirectional high-pressure extrusion grouting head (1) and a frame (2), wherein the unidirectional high-pressure extrusion grouting head (1) is mounted on the frame (2) via a grouting tube (3), and a grouting pressure tank (4) connected to the grouting tube (3) is provided on the frame (2), characterized in that: The outer surface of the one-way high-pressure extrusion grouting head (1) is provided with threads. The one-way high-pressure extrusion grouting head (1) is connected to the grouting tube (3) via a connector (5). The connector (5) is rotatably mounted on the frame (2). The cement grouting construction device further comprises: A guide side plate (6), the guide side plate (6) being detachably mounted on the lower end of the connector (5), and a lifting ring (7) being slidably provided on the guide side plate (6); An upper rotating part (8), the upper rotating part (8) being threadedly mounted on the outer surface of the one-way high-pressure extrusion grouting head (1); A lower rotating part (9), the lower rotating part (9) is rotatably mounted on the upper rotating part (8), and the lifting ring (7) is fixedly mounted on the outer side of the lower rotating part (9); A bidirectional vibrating mechanism (10) for vibrating the grouting material, the bidirectional vibrating mechanism (10) being mounted on the upper rotating part (8) and the lower rotating part (9); A driving mechanism (11) for driving the upper rotating part (8) and the lower rotating part (9) to rotate in opposite directions relative to each other, wherein the driving mechanism (11) is mounted on the frame (2).

2. A cement grouting construction device according to claim 1, characterized in that: The driving mechanism (11) comprises: A driving motor (111), wherein the driving motor (111) is mounted on the frame (2); A worm gear machine (112), the worm gear machine (112) being rotatably mounted on the frame (2), and an end of the worm gear machine (112) being connected to an output end of the drive motor (111); A worm wheel (113), wherein there are two worm wheels (113), both of which are meshed with the worm gear (112), wherein one of the worm wheels (113) is mounted on the grouting barrel (3), and the other of the worm wheels (113) is mounted on the frame (2) via a rotating shaft (114); Gear 1 (115), the gear 1 (115) being fixedly connected to the upper end of the connector (5); Gear 2 (116), the gear 2 (116) is mounted on the lower end of the rotating shaft (114), and the gear 2 (116) is meshed with the gear 1 (115).

3. A cement grouting construction device according to claim 1, characterized in that: A wave-shaped guide groove (12) is provided on the surface of the upper rotating part (8), a slide groove (13) is provided on the surface of the upper rotating part (8) below the guide groove (12), and the lower end of the upper rotating part (8) is rotatably mounted on the upper end of the upper rotating part (8).

4. A cement grouting construction device according to claim 3, characterized in that: The surface of the lower rotating part (9) is also uniformly provided with grouting channels (14) in a circumferential direction, and the top of the lower rotating part (9) is uniformly provided with through holes (15), the upper ends of the through holes (15) are chamfered and expanded, and the lower ends of the through holes (15) extend to the grouting channels (14).

5. A cement grouting construction device according to claim 4, characterized in that: The bidirectional vibrating mechanism (10) comprises: A sliding ball (101), wherein there are a plurality of sliding balls (101), and the plurality of sliding balls (101) are all slidably disposed in the guide groove (12); A connecting tube (102), the upper end of the connecting tube (102) being fixedly connected to the sliding ball (101), the connecting tube (102) being slidably disposed in the sliding groove (13), the connecting tube (102) also being slidably disposed in the through hole (15), and the side end of the connecting tube (102) being movably provided with a telescopic head (104) via an elastic member (103); A longitudinal vibrating head (105), the longitudinal vibrating head (105) being mounted on the lower end of the connecting pipe (102), and the longitudinal vibrating head (105) being also slidably disposed in the grouting flow channel (14); A transverse vibrating head (106) is slidably disposed in the longitudinal vibrating head (105), and transmission fluid is sealed and filled in the connecting pipe (102) between the transverse vibrating head (106) and the longitudinal vibrating head (105).

6. A cement grouting construction device according to claim 1, characterized in that: The elastic member (103) is a spring, and there are a plurality of springs. One end of the plurality of springs is connected to the telescopic head (104), and the other end of the plurality of springs is connected to the inner wall of the connecting tube (102).

7. A cement grouting construction device according to claim 1, characterized in that: The grout outlet (16) at the lower end of the one-way high-pressure extrusion grouting head (1) is arranged laterally.

8. A cement grouting construction device according to claim 7, characterized in that: A water blocking plate (17) is clamped at the lower end of the guide side plate (6), and the middle portion of the water blocking plate (17) abuts against the bottom of the one-way high-pressure extrusion grouting head (1), and the abutment height is lower than the slurry outlet (16) at the lower end of the one-way high-pressure extrusion grouting head (1).

9. A cement grouting construction device according to claim 1, characterized in that: A protective sleeve (18) is installed on the lifting ring (7).

10. A cement grouting construction device according to claim 9, characterized in that: The inner wall of the protective sleeve (18) matches the outer edge of the upper rotating portion (8), and the protective sleeve (18) is a telescopic structure with adjustable height.

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