Connecting and pouring device suitable for ultra-deep foundation pit underground diaphragm wall

Abstract

The invention relates to the technical field of underground diaphragm wall construction, in particular to a connecting and pouring device suitable for an ultra-deep foundation pit underground diaphragm wall, which comprises a grouting pipe, a mounting plate fixedly connected to the upper end of the grouting pipe, a sliding plate slidably connected in the grouting pipe, a suspender fixedly connected to the lower end of the sliding plate, and a punching device arranged on the inner wall of the grouting pipe, one side of the fixing plate is rotationally connected with a base pipe, a fixing pipe is slidably connected into the base pipe, the fixing pipe can slide back and forth in the base pipe when the suspender moves up and down along with the sliding plate, and meanwhile the base pipe rotates by a certain angle when the suspender descends. During chiseling, the concrete enters the connecting holes through the fixing pipes, so that slurry in the connecting holes can be discharged, and the concrete can fully enter the connecting holes, so that the connection stability between the newly-poured continuous wall and the old wall is enhanced, and the service life of the newly-poured continuous wall is prolonged; the problem that in the prior art, in the pouring process, a connecting hole is difficult to be completely filled with concrete is solved.

Description

Technical Field

[0001] The invention relates to the technical field of underground continuous wall construction, in particular to a connection casting device suitable for underground continuous walls of ultra-deep foundation pits. Background Art

[0002] An underground continuous wall is a foundation project that uses a trenching machine on the ground to dig a long and narrow deep trench along the peripheral axis of the deep excavation project under the condition of mud wall protection. After the trench is cleaned, a steel cage is suspended in the trench, and then underwater concrete is poured using the conduit method to build a unit trench section. This process is carried out section by section to build a continuous reinforced concrete wall underground as a water-blocking, anti-seepage, load-bearing, and water-retaining structure. In the prior art, during the construction of underground continuous walls, part of the continuous wall must be connected to the existing wall or pier. If the connection is directly cast, the connection strength at the junction of the new and the old is low, and the connection is easily deformed by external force, affecting the water-blocking, anti-seepage, load-bearing, and water-retaining performance of the underground continuous wall. To avoid this problem, refer to Figure 8 In the prior art, a plurality of connection holes 101 are usually chiseled on the old wall 100, and then the concrete enters the connection holes during the pouring of concrete. After the curing is completed, since the newly poured concrete part is located in the connection holes, the poured continuous wall is firmly connected to the old wall. It is found during use that since the deep groove excavated before pouring concrete needs to be filled with mud, the soil pressure on both sides of the deep groove is balanced by mud, so the mud will inevitably enter the connection hole. During the pouring process, after the concrete enters the bottom of the deep groove 200, it will sink into the bottom of the deep groove, so that the mud in the bottom of the deep groove will be squeezed out, and then poured upward little by little until the entire deep groove is filled with concrete. In this process, due to the presence of mud in the connection hole, under the obstruction of mud (concrete extrusion will increase the pressure in the connection hole), it is difficult for concrete to completely fill the connection hole during the pouring process. The connection between the continuous wall formed after pouring and the old wall is still not particularly firm, and it is still easy to deform under external forces. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose a connection casting device suitable for underground continuous walls of ultra-deep foundation pits.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A connection pouring device suitable for underground continuous walls in ultra-deep foundation pits comprises a grouting pipe, the upper end of the grouting pipe is fixedly connected to a mounting plate, a sliding plate is slidably connected inside the grouting pipe, the lower end of the sliding plate is fixedly connected to a hanger, a power assembly is mounted on the mounting plate, the power assembly is used for the sliding plate to slide up and down in the grouting pipe, a grouting inlet pipe is provided on the side wall of the grouting pipe, a drilling device is provided on the inner wall of the grouting pipe, the drilling device comprises a fixing plate, one side of the fixing plate is rotatably connected to a base pipe, the base pipe is slidably connected to a fixing pipe, one end of the fixing pipe passes through a clearance hole on one side of the grouting pipe, and the end of the fixing pipe is set as an inclined surface, a sealing plate is hinged at the inclined surface by a first spring hinge, the fixing pipe can slide back and forth in the base pipe when the hanger follows the sliding plate to move up and down, and the base pipe is also rotated by a certain angle during the descent of the hanger.

[0006] Preferably, the other end of the fixed tube is fixedly connected to a retaining ring, a first spring is fixedly connected between the retaining ring and the base tube, the fixed tube is connected to a resistance block through a connecting rod, one side of the suspension rod is fixedly connected to a triangular resistance plate, and the inclined surface of the resistance plate is arranged corresponding to the resistance block.

[0007] Preferably, a groove is provided on the inclined surface of the abutment plate.

[0008] Preferably, a cavity is provided inside the fixed plate, a ratchet gear ring is provided in the cavity, the ratchet gear ring is sleeved on the outside of the base pipe, a ratchet locking piece is provided in the cavity, a guide hole connected to the cavity is provided on one side of the fixed plate, a guide rod is slidably connected in the guide hole, a ratchet driving piece is fixedly connected in the guide rod, one end of the guide rod is fixedly connected to the interference shaft, the lower end of the suspension rod is fixedly connected to the pressure rod, the pressure rod is meshed with the interference shaft, and a second spring is fixedly connected between the end of the guide rod and the side wall of the cavity.

[0009] Preferably, the ratchet drive member and the ratchet locking member have the same structure, and both include a base plate, one side of the base plate is rotatably connected to the pawl through a rotating shaft, one side of the base plate is fixedly connected to a limit plate, one side of the base plate is equipped with an elastic pressure plate, and the limit plate and the elastic pressure plate are respectively located on both sides of the pawl.

[0010] Preferably, a fixing frame is mounted on the mounting plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] While roughening, the concrete enters into the connecting hole through a fixed pipe, so that the mud in the connecting hole can be discharged, so that the concrete can fully enter the connecting hole, thereby enhancing the connection stability between the newly cast continuous wall and the old wall, and solving the problem that it is difficult for the existing technology to completely fill the connecting hole with concrete during the pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 For the present invention Figure 1 A magnified view of the structure at A;

[0015] Figure 3 For the present invention Figure 1 A magnified view of the structure at B in FIG.

[0016] Figure 4 It is a structural schematic diagram of the drilling device of the present invention;

[0017] Figure 5 is a cross-sectional view of a drilling device of the present invention;

[0018] Figure 6 It is a schematic structural diagram of a ratchet driving member or a ratchet locking member of the present invention;

[0019] Figure 7 A reference diagram of the use state of the present invention;

[0020] Figure 8 This is a reference diagram of the drilling device of the present invention in use. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] Example 1

[0023] like Figure 1-Figure 7 The device shown is suitable for connecting and pouring underground continuous walls of ultra-deep foundation pits, comprising a grouting pipe 2, the upper end of which is fixedly connected to a mounting plate 1, and a fixing frame 4 is mounted on the mounting plate 1, which is conveniently connected to a lifting device through the fixing frame 4.

[0024] A slide plate 21 is slidably connected inside the grouting pipe 2, and a power assembly 3 is installed on the mounting plate 1. The power assembly 3 is used for the slide plate 21 to slide up and down inside the grouting pipe 2. The power assembly 3 is a prior art and will not be described in detail here. A slurry inlet pipe is provided on the side wall of the grouting pipe 2. The slurry inlet pipe is blocked in the figure. The slurry inlet pipe is horizontally arranged and connected to the grouting pipe 2. The concrete slurry enters the grouting pipe through the slurry inlet pipe and then flows downward along the grouting pipe.

[0025] The lower end of the slide plate 21 is fixedly connected to the hanger 5, and a drilling device 6 is provided on the inner wall of the grouting pipe 2. The drilling device 6 includes a fixed plate 61, one side of the fixed plate 61 is rotatably connected to the base pipe 62, and the base pipe 62 is slidably connected to the fixed pipe 63. Corresponding keys and keyways are provided between the outer wall of the fixed pipe 63 and the inner wall of the base pipe 62. The keys and keyways are used to ensure that the fixed pipe 63 can only slide in the base pipe 62, but cannot rotate in the base pipe 62.

[0026] One end of the fixed pipe 63 passes through the clearance hole on one side of the grouting pipe 2. In this embodiment, the angle between the fixed pipe 63 and the grouting pipe 2 is 45°, and the end of the fixed pipe 63 is set as an inclined surface. The sealing plate is hinged at the inclined surface through the first spring hinge. When the elastic force of the first spring hinge is in a free state, the sealing plate can just seal the fixed pipe 63. The hanging rod 5 can make the fixed pipe 63 slide back and forth in the base pipe 62 during the up and down movement of the slide plate 21. During the reciprocating movement of the fixed pipe 63, the connecting hole 101 is chiseled on the old wall 100. Since the end of the fixed pipe 63 is an inclined surface, a tip is formed on the inclined surface, so that a hole is drilled through the tip during the reciprocating movement of the fixed pipe 63. In order to facilitate drilling, the base pipe 62 is also rotated by a certain angle during the descent of the hanging rod 5. In this embodiment, each time the suspension rod 5 descends, the base tube 62 can rotate to a certain angle, which is specifically achieved in the following manner: the other end of the fixed tube 63 is fixedly connected to the retaining ring 64, the retaining ring 64 and the base tube 62 are fixedly connected to the first spring 65, the fixed tube 63 is connected to the resistance block 67 through the connecting rod 66, and one side of the suspension rod 5 is fixedly connected to the triangular resistance plate 51, and the inclined surface of the resistance plate 51 is set corresponding to the resistance block 67. In this way, see Figure 3 and Figure 8 When the suspension rod 5 reciprocates and descends, the contact plate 51 contacts the inclined surface of the contact block 67, thereby generating a squeezing force on the contact plate 51, and the fixed tube 63 reciprocates under the cooperation of the first spring 65. In order to facilitate the base tube 62 to rotate a certain angle, a cavity 60 is provided inside the fixed plate 61, and a ratchet gear ring 9 is provided in the cavity. The ratchet gear ring 9 is sleeved on the outside of the base tube 62, and a ratchet locking member 80 is provided in the cavity. A guide hole connected to the cavity 60 is provided on one side of the fixed plate 61, and a guide rod 7 is slidably connected in the guide hole. A ratchet driving member 8 is fixedly connected in the guide rod 7. The ratchet driving member 8 has the same structure as the ratchet locking member 80, and both include a base plate 81, one side of the base plate 81 is rotatably connected to the ratchet pawl 83 through the rotating shaft 82, and one side of the base plate 81 is fixedly connected to the limit plate 84. An elastic pressure plate 85 is provided on one side of the base plate 81, and the limit plate 84 and the elastic pressure plate 85 are respectively located on both sides of the ratchet pawl 83. One end of the guide rod 7 is fixedly connected to the abutment shaft 71, and the lower end of the suspension rod 5 is fixedly connected to the pressure rod 53, which meshes with the abutment shaft 71, and a second spring 70 is fixedly connected between the end of the guide rod 7 and the side wall of the cavity 60. Each time the suspension rod 5 descends, the pressure rod 53 generates downward pressure on the abutment shaft 71, thereby causing the guide rod 7 to move downward. During the movement of the guide rod 7, the ratchet drive member 8 causes the ratchet gear ring 9 to rotate by an angle of one tooth, and the angle of rotation is completed according to the number of teeth of the ratchet gear ring 9. The rotation of the ratchet gear ring 9 can drive the base pipe 62 and the fixed pipe 63 to rotate simultaneously, thereby causing the position of the tip of the fixed pipe 63 to change, which makes it easier to perform the drilling operation.

[0027] A groove 52 is provided on the inclined surface of the resistance plate 51. After the drilling is completed, the suspension rod 5 is controlled to move so that the resistance block 67 is located in the groove 52, so that there is just a gap between the fixed pipe 63 and the bottom of the connection hole 101, and the grouting pipe is filled with concrete. After the filled concrete falls downward, the concrete can enter the fixed pipe 63, and then the sealing plate is rotated under the extrusion force of the concrete, and the concrete enters the connection hole through the fixed pipe 63, so that the mud in the connection hole can be discharged, so that the concrete can fully enter the connection hole, thereby enhancing the connection stability between the newly cast continuous wall 300 and the old wall. The problem of the prior art that it is difficult to completely fill the connection hole with concrete during the casting process is solved.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A connection pouring device suitable for underground continuous walls of ultra-deep foundation pits, characterized by: The invention comprises a grouting pipe (2), the upper end of the grouting pipe (2) is fixedly connected to a mounting plate (1), a slide plate (21) is slidably connected inside the grouting pipe (2), the lower end of the slide plate (21) is fixedly connected to a suspension rod (5), a power assembly (3) is mounted on the mounting plate (1), the power assembly (3) is used for the slide plate (21) to slide up and down inside the grouting pipe (2), a grouting pipe is arranged on the side wall of the grouting pipe (2), a drilling device (6) is arranged on the inner wall of the grouting pipe (2), the drilling device (6) comprises a fixing plate (61), the fixing plate One side of (61) is rotatably connected to a base pipe (62), and the base pipe (62) is slidably connected to a fixed pipe (63), one end of the fixed pipe (63) passes through a clearance hole on one side of the grouting pipe (2), and the end of the fixed pipe (63) is set as an inclined surface, and a sealing plate is hinged at the inclined surface through a first spring hinge. When the suspension rod (5) follows the sliding plate (21) to move up and down, the fixed pipe (63) can slide back and forth in the base pipe (62), and at the same time, when the suspension rod (5) descends, the base pipe (62) is also rotated by a certain angle.

2. A connection pouring device suitable for underground continuous walls of ultra-deep foundation pits as claimed in claim 1, characterized in that: The other end of the fixed tube (63) is fixedly connected to a retaining ring (64), a first spring (65) is fixedly connected between the retaining ring (64) and the base tube (62), the fixed tube (63) is connected to a resistance block (67) via a connecting rod (66), one side of the suspension rod (5) is fixedly connected to a triangular resistance plate (51), and the inclined surface of the resistance plate (51) is arranged corresponding to the resistance block (67).

3. A connection pouring device suitable for underground continuous walls of ultra-deep foundation pits as claimed in claim 2, characterized in that: A groove (52) is provided on the inclined surface of the abutment plate (51).

4. A connection pouring device suitable for underground continuous walls of ultra-deep foundation pits as claimed in claim 2, characterized in that: A cavity (60) is provided inside the fixing plate (61), a ratchet gear ring (9) is provided inside the cavity, the ratchet gear ring (9) is sleeved on the outside of the base tube (62), a ratchet locking member (80) is provided in the cavity, a guide hole connected to the cavity (60) is provided on one side of the fixing plate (61), a guide rod (7) is slidably connected in the guide hole, a ratchet driving member (8) is fixedly connected in the guide rod (7), one end of the guide rod (7) is fixedly connected to a resistance shaft (71), the lower end of the suspension rod (5) is fixedly connected to a pressure rod (53), the pressure rod (53) is meshed with the resistance shaft (71), and a second spring (70) is fixedly connected between the end of the guide rod (7) and the side wall of the cavity (60).

5. A connection pouring device suitable for underground continuous wall of ultra-deep foundation pit as claimed in claim 4, characterized in that: The ratchet drive member (8) and the ratchet locking member (80) have the same structure, and both include a base plate (81). One side of the base plate (81) is rotatably connected to a ratchet pawl (83) via a rotating shaft (82). One side of the base plate (81) is fixedly connected to a limit plate (84). One side of the base plate (81) is provided with an elastic pressure plate (85). The limit plate (84) and the elastic pressure plate (85) are respectively located on two sides of the ratchet pawl (83).

6. A connection pouring device suitable for underground continuous walls of ultra-deep foundation pits as claimed in claim 1, characterized in that: A fixing frame (4) is mounted on the mounting plate (1).

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