Connecting structure for supporting waist beam and fractured rock mass in foundation pit

Abstract

The invention discloses a foundation pit inner supporting waist beam and fractured rock mass connecting structure which comprises four groups of waist beam connecting mechanisms, four groups of splicing moving mechanisms, two groups of supporting abutting mechanisms, four groups of locking mechanisms and a foundation pit body. The waist beam connecting mechanism is connected with a broken rock mass in the foundation pit body through two rock anchor rods, and the splicing moving mechanism is arranged on the waist beam connecting mechanism. By arranging the splicing moving mechanism, the two adjacent waist beam connecting mechanisms can be spliced conveniently, the position of each spliced waist beam connecting mechanism can be adjusted, so that the waist beam plate can be tightly attached to a broken rock mass, the multiple waist beam connecting mechanisms form a whole, and the splicing moving mechanism can be used for splicing the two adjacent waist beam connecting mechanisms. The waist beam plate has the effect of integrally supporting the fractured rock mass, meanwhile, it is guaranteed that the waist beam plate can be tightly attached to the fractured rock mass, and the waist beam plate is fixed to the fractured rock mass through the anchor rods.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pits, and in particular to a connection structure between a supporting waist beam and a broken rock mass in a foundation pit. Background Art

[0002] The construction of foundation pit support structure is one of the important links in the civil construction process. Broken rock mass in foundation pit engineering usually refers to the rock fracture zone or broken rock layer encountered during the foundation pit excavation process. This part of the rock mass is broken, cracked, and reduced in strength due to geological structure, weathering, human activities and other factors, forming a relatively loose or unstable geological structure. The broken rock mass in the foundation pit usually needs to be supported and fixed with the help of waist beams to enhance the stability of the surrounding soil and ensure the safety of the foundation pit.

[0003] According to the publication number: CN218148393U, a supporting waist beam and broken rock mass connection structure in a foundation pit includes a foundation pit, a slope, a first rock layer soil nail, a second rock layer soil nail, a waist beam, a support column, and a support beam; the edges of the foundation pit are arranged in a stepped manner, and the foundation pit includes a road surface platform at the top, a multi-step stepped platform in the middle, and a foundation pit bottom platform at the bottom. Multiple slopes are built on the inclined surface of the edge of the foundation pit, and the back of each slope is evenly connected to the rock mass with the first rock layer soil nails. A waist beam arranged around the foundation pit is provided along the middle of each slope, and the second rock layer soil nails are evenly used to connect to the rock mass along the length direction of the waist beam. Support beams are provided between waist beams of the same height, and support columns are evenly arranged around the foundation pit at the end of the foundation pit bottom platform, and the support columns are connected to support beams of different heights.

[0004] The waist beam in the above case is in an integrally formed state. Due to the uneven surface of the broken rock mass, several welded waist beams cannot all fit and support the broken rock mass, which seriously affects the support effect on the broken rock mass. Some waist beams are separate individuals to support the broken rock mass separately, but the separate waist beams not only cannot ensure the stability between adjacent waist beams, but also reduce the support effect of the overall waist beam on the broken rock mass. Moreover, because the broken rock mass is not flat, the spacing between the supporting waist beams on the left and right sides will be different, making it impossible for the support beam to reinforce the waist beam. For this reason, we provide a connection structure between the supporting waist beam and the broken rock mass in the foundation pit. Summary of the Invention

[0005] The purpose of the present invention is to provide a connection structure between a supporting waist beam and a broken rock mass in a foundation pit, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a connection structure between a supporting waist beam and a broken rock mass in a foundation pit, comprising four sets of waist beam connection mechanisms, four sets of splicing and moving mechanisms, two sets of supporting and resisting mechanisms, four sets of locking mechanisms, and a foundation pit body, wherein the waist beam connection mechanism is arranged inside the foundation pit body, the waist beam connection mechanism is connected to the broken rock mass in the foundation pit body via two rock anchors, the splicing and moving mechanisms are arranged on the waist beam connection mechanism, the supporting and resisting mechanisms are arranged inside the foundation pit body for supporting and reinforcing the waist beam connection mechanism, and the locking mechanism is arranged on the supporting and resisting mechanisms;

[0007] The waist beam connection mechanism includes two waist beam plates, which are arranged inside the foundation pit body. A first reinforcement block and a second reinforcement block are respectively arranged between the two waist beam plates on the same side. The left and right sides of the first reinforcement block and the second reinforcement block are respectively fixedly connected to the two waist beam plates. The waist beam plate, the first reinforcement block and the second reinforcement block constitute a waist beam.

[0008] Preferably, the splicing moving mechanism includes an insert block and a slot, the insert blocks are two in number and are respectively arranged on the back of the two waist beam plates, the slots are two in number and are respectively opened on the top of the front of the two waist beam plates, a slide groove is opened on the back of the first reinforcement block, the left and right sides of the inner wall of the slide groove are fixedly connected by a sliding rod, and the surface of the sliding rod is slidably connected to the slider.

[0009] Preferably, a moving block is installed on the back of the slider, two connecting blocks are installed on the back of the moving block, the back of the connecting block is fixedly connected to the front of the plug block, and a locking mechanism is provided on the top of the first reinforcement block.

[0010] Preferably, the locking mechanism includes a recessed block and a movable column, the recessed block is mounted on the top of the first reinforcement block, a rubber block is mounted on the top of the recessed block, and movable grooves that are interconnected are provided at the top of the recessed block, the top of the rubber block and the top of the inner wall of the slide groove, the movable column is mounted on the top of the slider, and the top of the movable column passes through the slide groove and the movable groove in sequence from bottom to top and extends to the inside of the movable groove.

[0011] Preferably, a rotatable rotating block is provided on the top of the rubber block, a threaded head is installed on the bottom of the rotating block, a threaded groove adapted to the threaded head is opened on the top of the movable column, and the bottom end of the threaded head passes through the threaded groove and extends to its interior to be threadedly connected to the inner wall of the threaded groove.

[0012] Preferably, the supporting and resisting mechanism includes a supporting column, which is fixed in the pile pit at the bottom of the inner wall of the foundation pit body. Two movable supporting blocks are arranged above the supporting column, and the two sides of the supporting blocks away from each other are both equipped with resisting plates used in conjunction with the waist beam plate. The top of the supporting column is provided with a mounting block, and the mounting block is provided with an adjusting telescopic mechanism.

[0013] The cam is secured to the interior of the unit and has a locking plate which is secured on the floor to the interior of the unit and has a locking plate which is secured on the interior of the unit and has a locking plate which is secured on the interior of the unit and has a locking plate which is secured on the interior of the unit and has a locking plate which is secured on the interior of the unit and has a locking plate which is secured on the interior of the unit and

[0014] Preferably, the supporting and resisting mechanism also includes a stabilizing block and a card slot. There are two stabilizing blocks, which are respectively installed on the left and right sides of the support column. A top plate is installed on the top of the stabilizing block, and a positioning block is installed on the top of the top plate. A positioning slot adapted to the positioning block is provided at the bottom of the support block and at the position corresponding to the positioning block. The card slot is provided at the top of the support column, and a card block is installed at the bottom of the mounting block and at the position corresponding to the card slot.

[0015] Preferably, the locking mechanism includes a downward pressure block and a concave plate, the downward pressure block is installed on the top of the supporting plate, the concave plate is arranged on the back of the second reinforcement block, a connecting groove is opened inside the waist beam plate and at the position corresponding to the slot, a movable active block is arranged inside the connecting groove, two fixing rods are installed on the front of the inner wall of the connecting groove, the rear end of the fixing rod passes through the movable block and extends to its outside and is fixedly connected to the inner wall of the connecting groove, and a buffer spring is sleeved on the surface of the fixing rod.

[0016] Preferably, a locking block is installed on the side of the movable block close to the insertion block, a locking groove is opened on the position of the insertion block close to the locking block, the side of the movable block close to the concave plate is fixedly connected to the concave plate through an adjusting block, an inclined plate is installed on the back of the concave plate, and a movable inclined block used in conjunction with the inclined plate is installed on the bottom of the pressing block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a splicing moving mechanism to facilitate the splicing of two adjacent waist beam connecting mechanisms, and can adjust the position of each waist beam connecting mechanism after splicing, so that the waist beam plate can be close to the broken rock mass. Not only does it make multiple waist beam connecting mechanisms form a whole, so that the waist beam plate has the effect of supporting the broken rock mass as a whole, but it also ensures that the waist beam plate can be close to the broken rock mass, and the waist beam plate is fixed to the broken rock mass through anchor rods.

[0019] 2. The present invention can improve the effect of the waist beam on connecting and supporting the broken rock mass by setting a supporting and resisting mechanism, thereby ensuring the overall stability of the support system in the foundation pit. By setting an adjustable telescopic mechanism, the resisting plate can be adjusted according to the position of the waist beam plate. When the position of the waist beam plate changes, the position of the resisting plate can always be close to the waist beam plate. When the waist beam plate is close to the broken rock mass, the resisting plate can be close to the waist beam plate.

[0020] 3. The present invention sets a locking mechanism. When the supporting plate supports the waist beam plate, the supporting plate can insert the locking block into the locking groove through the pressing block and the inclined plate, and the two adjacent waist beam plates can be locked, thereby ensuring the stability of the two adjacent waist beam connection mechanisms after splicing and installation. By setting a locking mechanism, the waist beam connection mechanism after the position is adjusted can be further locked. Since each waist beam connection mechanism needs to fit and support the broken rock mass, it is ensured that the two adjacent waist beam connection mechanisms can be locked after the position is adjusted, so that the position between the two adjacent waist beam connection mechanisms will not change, thereby improving the overall stability of the support system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the anchor rod, waist beam connection mechanism, splicing movement mechanism, supporting and resisting mechanism, locking mechanism, locking mechanism and adjusting and telescopic mechanism of the present invention;

[0023] Figure 3 It is a three-dimensional structural diagram of the bottom view of the anchor rod, waist beam connection mechanism, splicing and moving mechanism, supporting and resisting mechanism, locking mechanism, locking mechanism and adjusting and telescopic mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the waist beam connection mechanism of the present invention when the front and rear sides are not spliced;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the waist beam connection mechanism, support block, mounting block and locking mechanism of the present invention;

[0026] Figure 6It is a schematic diagram of the three-dimensional structure of the side view of the waist beam connection mechanism, splicing movement mechanism, locking mechanism, inclined plate and extension block of the present invention;

[0027] Figure 7 It is a three-dimensional cross-sectional view of the side view of the waist beam connecting mechanism, the splicing moving mechanism and the locking mechanism of the present invention;

[0028] Figure 8 This is an exploded view of the three-dimensional structure of the slider and the locking mechanism of the present invention;

[0029] Figure 9 It is a three-dimensional structural cross-sectional view of the waist beam connecting mechanism, splicing moving mechanism, locking mechanism, lower pressing block, inclined plate and inclined block side view of the present invention;

[0030] Figure 10 It is a schematic diagram of the three-dimensional structure of the side view of the lower pressing block, the inclined plate and the inclined block of the present invention;

[0031] Figure 11 It is a structural cross-sectional view of the front view of the supporting and resisting mechanism and the adjusting and telescopic mechanism of the present invention;

[0032] Figure 12 It is a structural cross-sectional view of the support block, the rotating shaft, the annular limiting groove and the front view of the annular limiting block of the present invention;

[0033] Figure 13 This is a structural cross-sectional view of the top view of the front and rear waist beam connection mechanisms after splicing;

[0034] Figure 14 It is a schematic diagram of the three-dimensional structure of the support block, the abutting plate and the rotation axis from the bottom view of the present invention;

[0035] Figure 15 It is a schematic diagram of the three-dimensional structure of the concave plate, movable block, locking block, adjusting block and extension slot of the present invention.

[0036] In the figure: 100 foundation pit body, 101 anchor rod, 1 waist beam connecting mechanism, 11 waist beam plate, 12 first reinforcement block, 13 second reinforcement block, 2 splicing moving mechanism, 21 plug block, 22 slot, 23 slide groove, 24 slide rod, 25 slider, 26 moving block, 27 connecting block, 3 supporting and resisting mechanism, 31 support column, 32 support block, 33 resisting plate, 34 mounting block, 35 stabilizing block, 36 card slot, 37 top plate, 38 positioning block, 39 positioning slot, 310 card block, 311 fixing block, 312 fastening bolt, 4 locking mechanism, 41 pressing block, 42 ​​concave plate, 4 3 connecting groove, 44 movable block, 45 fixed rod, 46 buffer spring, 47 locking block, 48 locking groove, 49 adjusting block, 410 inclined plate, 411 inclined block, 412 extension block, 413 extension groove, 5 locking mechanism, 51 concave block, 52 moving column, 53 rubber block, 54 moving groove, 55 rotating block, 56 threaded head, 57 threaded groove, 6 adjusting telescopic mechanism, 61 annular mounting groove, 62 positive threaded annular head, 63 negative threaded annular head, 64 rotating shaft, 65 annular groove, 66 annular block, 67 annular limit groove, 68 annular limit block, 100 foundation pit body. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figure 1-15 A connection structure between a supporting waist beam and a broken rock mass in a foundation pit comprises four groups of waist beam connection mechanisms 1, four groups of splicing and moving mechanisms 2, two groups of supporting and resisting mechanisms 3, four groups of locking mechanisms 4 and a foundation pit body 100. The waist beam connection mechanism 1 is arranged inside the foundation pit body 100. The waist beam connection mechanism 1 is connected to the broken rock mass in the foundation pit body 100 through two rock anchors 101. The splicing and moving mechanism 2 is arranged on the waist beam connection mechanism 1. The supporting and resisting mechanism 3 is arranged inside the foundation pit body 100 for supporting and reinforcing the waist beam connection mechanism 1. The locking mechanism 4 is arranged on the supporting and resisting mechanism 3.

[0039] Furthermore, the number of waist beam connecting mechanisms 1 , splicing moving mechanisms 2 , supporting and resisting mechanisms 3 and locking mechanisms 4 can be increased according to the size of the foundation pit body 100 .

[0040] The waist beam connection mechanism 1 includes two waist beam plates 11, which are arranged inside the foundation pit body 100. A first reinforcement block 12 and a second reinforcement block 13 are respectively arranged between the two waist beam plates 11 on the same side. The left and right sides of the first reinforcement block 12 and the second reinforcement block 13 are respectively fixedly connected to the two waist beam plates 11. The waist beam plate 11, the first reinforcement block 12 and the second reinforcement block 13 constitute a waist beam.

[0041] The splicing moving mechanism 2 includes an insert block 21 and a slot 22. There are two insert blocks 21 and they are respectively arranged on the back of the two waist beams 11. There are two slots 22 and they are respectively opened at the top of the front of the two waist beams 11. The side of the insert block 21 close to the slot 22 passes through the slot 22 and extends to its interior and contacts the inner wall of the slot 22. A slide groove 23 is provided on the back of the first reinforcement block 12. The left and right sides of the inner wall of the slide groove 23 are fixedly connected by a slide rod 24. The surface of the slide rod 24 is slidably connected to the slider 25. The back of the slider 25 is fixedly connected to a moving block 26. The side of the moving block 26 close to the first reinforcement block 12 is in sliding contact with the first reinforcement block 12. The back of the moving block 26 is fixedly connected to two connecting blocks 27. The back of the connecting block 27 is fixedly connected to the front of the insert block 21. A locking mechanism 5 is provided on the top of the first reinforcement block 12.

[0042] Furthermore, by setting a slide groove 23, a slide rod 24, a slider 25, a moving block 26 and a connecting block 27, the positions of the front and rear waist beam connection mechanisms 1 can be adjusted left and right, so that the waist beam plate 11 on each set of waist beam connection mechanisms 1 can be close to the broken rock mass.

[0043] By setting up a splicing moving mechanism 2, it is convenient to splice two adjacent waist beam connecting mechanisms 1, and the position of each waist beam connecting mechanism 1 after splicing can be adjusted, so that the waist beam plate 11 can be close to the broken rock mass. Not only does it make multiple waist beam connecting mechanisms 1 form a whole, so that the waist beam plate 11 has the effect of supporting the broken rock mass as a whole, but it also ensures that the waist beam plate 11 can be close to the broken rock mass, and the waist beam plate 11 is fixed to the broken rock mass through the anchor rod 101.

[0044] The locking mechanism 5 includes a concave block 51 and a movable column 52. The concave block 51 is installed on the top of the first reinforcement block 12. The top of the concave block 51 is fixedly connected to a rubber block 53. The top of the concave block 51, the top of the rubber block 53 and the top of the inner wall of the slide 23 are all provided with a movable groove 54 that is interconnected. The movable column 52 is installed on the top of the slider 25. The top of the movable column 52 passes through the slide 23 and the movable groove 54 from bottom to top and extends to the inside of the movable groove 54. The top of the rubber block 53 is provided with a rotatable The movable rotating block 55 has one end of the rotating block 55 close to the rubber block 53 in contact with the rubber block 53. By providing the rubber block 53, the friction between the rotating block 55 and the rubber block 53 is increased, thereby preventing the rotating block 55 from rotating on its own. A threaded head 56 is fixedly connected to the bottom of the rotating block 55, and a threaded groove 57 adapted to the threaded head 56 is provided at the top of the movable column 52. The bottom end of the threaded head 56 passes through the threaded groove 57 and extends to its interior to be threadedly connected to the inner wall of the threaded groove 57.

[0045] Furthermore, the positions of the front and rear sets of waist beam connection mechanisms 1 can be adjusted left and right. After the positions are adjusted, they are locked by the locking mechanism 5, so that the rotating block 55 drives the threaded head 56 to be threadedly connected in the thread groove 57, thereby limiting the position of the slider 25, and further limiting the position of the waist beam connection mechanism 1, ensuring the stability of each set of waist beam connection mechanisms 1 after being close to the broken rock mass.

[0046] The supporting and resisting mechanism 3 includes a supporting column 31, which is fixed in the pile pit at the bottom of the inner wall of the foundation pit body 100. Two movable supporting blocks 32 are arranged above the supporting column 31. The two supporting blocks 32 are fixedly connected to a resisting plate 33 used in conjunction with the waist beam plate 11 on the side away from each other. The side of the resisting plate 33 close to the waist beam plate 11 is in contact with the waist beam plate 11. A mounting block 34 is provided at the top of the supporting column 31. The bottom of the mounting block 34 is in contact with the top of the supporting column 31. An adjusting and telescopic mechanism 6 is provided on the mounting block 34.

[0047] The adjusting and telescopic mechanism 6 includes an annular mounting groove 61, which is provided inside the mounting block 34. Two rotatable positive thread annular heads 62 and negative thread annular heads 63 are provided inside the annular mounting groove 61. Two thread adjustment grooves are provided on the inner wall of the annular mounting groove 61, which are respectively threadedly connected to the positive thread annular head 62 and the negative thread annular head 63, so that the positive thread annular head 62 and the negative thread annular head 63 can rotate left and right through the thread adjustment grooves. The left end of the positive thread annular head 62 and the right end of the negative thread annular head 63 are fixedly connected to a rotating shaft 64. The end of the rotating shaft 64 close to the support block 32 passes through the annular mounting groove 61 and extends to the outside thereof. The end of the rotating shaft 64 close to the support block 32 is connected to the support block 32 rotational contact, an annular groove 65 is provided on the side of the rotating shaft 64 close to the support block 32, and an annular block 66 is fixedly connected to the side of the support block 32 close to the annular groove 65, and the side of the annular block 66 close to the annular groove 65 passes through the annular groove 65 and extends to its interior and is in rotational contact with the inner wall of the annular groove 65. An annular limiting groove 67 is provided on the inner wall of the annular groove 65, and an annular limiting block 68 is fixedly connected to the surface of the annular block 66 and the position corresponding to the annular limiting groove 67, which is in rotational contact with the annular limiting groove 67. By setting the annular groove 65, the annular block 66, the annular limiting groove 67 and the annular limiting block 68, when the rotating shaft 64 rotates, the support block 32 can only move left and right, thereby ensuring the stability of the left and right movement of the support block 32.

[0048] Furthermore, a rotating sleeve is fixedly connected to the surface of the rotating shaft 64, which facilitates the operation of the rotating shaft 64 for rotation. When rotating the rotating shaft 64, you can choose to use a wrench or other tools to rotate the rotating shaft 64. By rotating the rotating shaft 64, the positive thread ring head 62 and the negative thread ring head 63 can be rotated horizontally in the thread adjustment groove, thereby adjusting the position of the support block 32. The supporting plate 33 can be close to the waist beam plate 11 after the position is adjusted, and extend the position of the supporting plate 33 as the position of the waist beam plate 11 changes, ensuring that the supporting plate 33 is in full contact with the waist beam plate 11.

[0049] The support and resisting mechanism 3 also includes a stabilizing block 35 and a slot 36. There are two stabilizing blocks 35 and they are respectively installed on the left and right sides of the support column 31. The top of the stabilizing block 35 is fixedly connected to a top plate 37. The top of the top plate 37 contacts the bottom of the support block 32. The top of the top plate 37 is fixedly connected to a positioning block 38. The bottom of the support block 32 is provided with a positioning groove 39 corresponding to the position of the positioning block 38. The top of the positioning block 38 passes through the positioning groove 39 and extends to its interior and slides in contact with the inner wall of the positioning groove 39. The slot 36 is opened at the top of the support column 31. The bottom of the mounting block 34 is fixedly connected to a clamping block 310 at the position corresponding to the clamping groove 36. The bottom of the clamping block 310 passes through the clamping groove 36 and extends to its interior and contacts the inner wall of the clamping groove 36. By providing the clamping groove 36 and the clamping block 310, the mounting block 34 can be stably placed on the support column 31.

[0050] Furthermore, the stabilizing block 35, the top plate 37, the positioning block 38 and the positioning groove 39 not only support the support block 32, but also ensure that there will be no deviation when the supporting plate 33 moves close to the waist beam plate 11, thereby locking the front and rear positions of the support block 32 so that the support block 32 only has the effect of left and right movement.

[0051] Furthermore, a fixing block 311 is fixedly connected to the bottom of the supporting plate 33, and a fastening bolt 312 is provided on the fixing block 311 and is threadedly connected to the waist beam plate 11. By providing the fixing block 311 and the fastening bolt 312, the stability of the connection between the supporting plate 33 and the waist beam plate 11 is further improved, and the supporting effect of the waist beam plate 11 is improved.

[0052] By setting up the supporting and resisting mechanism 3, the effect of the waist beam on the connection and support of the broken rock mass can be improved, and the overall stability of the support system in the foundation pit can be ensured. By setting up the adjusting and telescopic mechanism 6, the resisting plate 33 can be adjusted according to the position of the waist beam plate 11. When the position of the waist beam plate 11 changes, the position of the resisting plate 33 can always be close to the waist beam plate 11. When the waist beam plate 11 is close to the broken rock mass, the resisting plate 33 can be close to the waist beam plate 11.

[0053] The locking mechanism 4 includes a pressing block 41 and a concave plate 42. The pressing block 41 is installed on the top of the plate 33. The concave plate 42 is arranged on the back of the second reinforcing block 13. The side of the concave plate 42 close to the second reinforcing block 13 is in contact with the second reinforcing block 13. A connecting groove 43 is provided inside the waist beam plate 11 and corresponds to the position of the slot 22. A movable movable block 44 is provided inside the connecting groove 43. The surface of the movable block 44 is in sliding contact with the inner wall of the connecting groove 43. Two fixing rods 45 are fixedly connected to the front of the inner wall of the connecting groove 43. The rear end of the fixing rod 45 passes through the movable block 44 and extends to its outside and is fixedly connected to the inner wall of the connecting groove 43. The surface of the fixing rod 45 is sleeved with The buffer spring 46 and the movable block 44 are fixedly connected to the side of the plug block 21 with a locking block 47. The plug block 21 is provided with a locking groove 48 at the position close to the locking block 47. The side of the locking block 47 close to the locking groove 48 passes through the connecting groove 43, the slot 22 and the locking groove 48 in sequence and extends to the interior of the locking groove 48 and contacts the inner wall of the locking groove 48. The side of the movable block 44 close to the concave plate 42 is fixedly connected to the concave plate 42 through the adjusting block 49. The back of the concave plate 42 is fixedly connected to the inclined plate 410. The bottom of the pressing block 41 is fixedly connected to a movable inclined block 411 used in conjunction with the inclined plate 410. The side of the inclined block 411 close to the inclined plate 410 contacts the inclined plate 410.

[0054] Further, such as Figure 13 As shown, the buffer spring 46 is in a compressed state at this time. When the inclined block 411 moves upward and separates from the inclined plate 410, the buffer spring 46 can drive the locking block 47 to move away from the locking groove 48 through the movable block 44 through the restoring elastic force of the buffer spring 46, so that the locking block 47 moves to the inside of the connecting groove 43 and separates from the locking groove 48.

[0055] Furthermore, when the waist beam connection mechanism 1 on the front and rear sides is spliced, the plug block 21 is inserted into the slot 22 and comes into contact with the broken rock mass at the same time, the supporting plate 33 can be operated at this time, so that the supporting plate 33 drives the lower pressing block 41 to move from top to bottom, and the lower pressing block 41 drives the locking block 47 to insert into the locking groove 48. The waist beam connection mechanism 1 is set at the front and rear ends of the foundation pit body 100, and the slot 22 on the waist beam connection mechanism 1 does not need the plug block 21 to be inserted. At this time, the supporting plate 33 can be directly operated, so that the supporting plate 33 drives the lower pressing block 41 to move from top to bottom, so that the locking block 47 can only be inserted into the corresponding slot 22. Figure 4 The status shown.

[0056] Furthermore, when the entire support system is installed and fixed, if an additional waist beam connecting mechanism 1 is needed, the corresponding support plate 33 and waist beam plate 11 need to be separated first, so that the inclined block 411 and the inclined plate 410 are separated, and the locking block 47 moves backward into the connecting groove 43, and then the waist beam connecting mechanism 1 is added to allow the insertion block 21 to be inserted into the slot 22, and then the corresponding support plate 33 and waist beam plate 11 are contacted, so that the locking block 47 is inserted into the corresponding locking groove 48.

[0057] Furthermore, by setting the shape of the plug block 21 and the slot 22, the front and rear positions of the waist beam plates 11 on the front and rear sides are limited, and they only have the effect of up and down movement. By the plug-in cooperation of the locking block 47 and the locking groove 48, the upper and lower positions of the waist beam plates 11 on the front and rear sides are limited. At this time, the positions of the waist beam plates 11 on the front and rear sides are locked.

[0058] Furthermore, since a tight fit can be ensured between the waist beam plate 11 and the broken rock mass by only fine-tuning, the distance between the supporting plate 33 and the installed waist beam plate 11 will not be too large, ensuring that the positioning block 38 can always move in the positioning groove 39 and the inclined block 411 can move laterally on the inclined surface of the inclined plate 410.

[0059] Furthermore, two extension blocks 412 are fixedly connected to the back of the second reinforcement block 13, and an extension groove 413 is provided on the front of the concave plate 42 at the position corresponding to the extension block 412. The back of the extension block 412 passes through the extension groove 413 and extends to the inside thereof and slides in contact with the inner wall of the extension groove 413. By providing the extension block 412 and the extension groove 413, the stability of the concave plate 42 during forward and backward movement is improved, and the phenomenon of displacement of the concave plate 42 during forward and backward movement is avoided.

[0060] Furthermore, the waist beam connection mechanism 1, splicing movement mechanism 2, supporting and resisting mechanism 3, locking mechanism 4, locking mechanism 5 and adjusting and telescopic mechanism 6 of the device of the present application can be disassembled from the foundation pit body 100 for recycling, saving resources and improving recycling efficiency.

[0061] By setting up the locking mechanism 4, when the supporting plate 33 supports the waist beam plate 11, the supporting plate 33 can insert the locking block 47 into the locking groove 48 through the pressing block 41 and the inclined plate 410, and the two adjacent waist beam plates 11 can be locked, ensuring the stability of the two adjacent waist beam connection mechanisms 1 after splicing and installation. By setting up the locking mechanism 5, the waist beam connection mechanism 1 after the position is adjusted can be further locked. Because each waist beam connection mechanism 1 needs to fit and support the broken rock mass, it is ensured that the two adjacent waist beam connection mechanisms 1 can be locked after the position is adjusted, so that the position between the two adjacent waist beam connection mechanisms 1 will not change, thereby improving the overall stability of the support system.

[0062] When in use, the same number of waist beam connection mechanisms 1 are selected according to the size of the foundation pit body 100, and then the first set of waist beam plates 11 are connected to the broken rock mass on the inner wall of the foundation pit body 100 through the anchor rods 101, so that the anchor rods 101 pass through the waist beam plates 11 and are inserted into the interior of the broken rock mass;

[0063] The second set of waist beams 11 drives the insert blocks 21 to be inserted from top to bottom into the corresponding slots 22 of the first set, and then the second set of waist beams 11 moves close to the broken rock mass, so that the second set of waist beams 11 can be closely attached to the broken rock mass. The second set of waist beams 11 drives the chute 23 to move close to the broken rock mass through the first reinforcement block 12, and the chute 23 drives the slide rod 24 to slide on the inner wall of the slider 25. At this time, the position of the second set of insert blocks 21 does not move, and the second set of waist beam connection mechanisms 1 moves close to the broken rock mass, so that the second set of waist beams 11 can be closely attached to the broken rock mass on the inner wall of the foundation pit body 100;

[0064] The rotating block 55 is rotated, and the rotating block 55 drives the threaded head 56 to rotate downward, so that the bottom of the rotating block 55 is in close contact with the top of the rubber block 53, and the rotating block 55 cannot continue to rotate. At this time, the slider 25 cannot move in the slide groove 23 and is limited by the rotating block 55. At this time, the position where the second group of waist beam connection mechanism 1 and the first group of waist beam connection mechanism 1 contact the broken rock mass is locked, and then the second group of waist beam connection mechanism 1 is connected to the broken rock mass through the anchor rod 101. And so on, the subsequent waist beam connection mechanism 1 is connected to the broken rock mass.

[0065] When the waist beam connection mechanism 1 is completely installed, the corresponding support column 31 is installed at the bottom of the inner wall of the foundation pit body 100 according to the position of the center of the waist beam connection mechanism 1 (one support column 31 is installed for each waist beam connection mechanism 1 on the left and right sides), and then the support block 32 and the abutting plate 33 are driven from top to bottom by the mounting block 34, so that the clamping block 310 can be inserted into the clamping slot 36, and the positioning block 38 can be inserted into the positioning slot 39;

[0066] The support plate 33 drives the inclined block 411 downward through the pressing block 41, so that the inclined block 411 and the inclined plate 410 come into contact (at this time, the support plate 33 does not come into contact with the waist beam plate 11). Because the contacting side of the inclined block 411 and the inclined plate 410 is designed as an inclined surface, the inclined block 411 drives the concave plate 42 to move close to the second reinforcing block 13 through the inclined plate 410, and the concave plate 42 drives the movable block 44 to move close to the inserting block 21 through the adjusting block 49. The movable block 44 squeezes the buffer spring 46 to move, and the movable block 44 drives the locking block 47 to move close to the locking groove 48, so that the locking block 47 is inserted into the locking groove 48, thereby locking the two adjacent waist beam connection mechanisms 1.

[0067] According to the distance between the support plate 33 and the waist beam plate 11, the rotating shaft 64 on the left side is rotated, and the rotating shaft 64 on the left side drives the positive thread ring head 62 to rotate to the left, and the rotating shaft 64 on the right side is rotated, so that the rotating shaft 64 on the right side drives the reverse thread ring head 63 to rotate to the right. The rotating shaft 64 that rotates left and right can drive the support block 32 to move left and right through the annular groove 65, the annular block 66, the annular limiting groove 67 and the annular limiting block 68, so that the annular block 66 rotates on the inner wall of the annular groove 65, and the surface of the annular limiting block 68 is aligned with the annular limiting groove 65. 7, the inner wall of the support block 32 drives the support plate 33 to move close to the waist beam plate 11, so that the support plate 33 and the waist beam plate 11 can be in close contact. (The movement of the support plate 33 close to the waist beam plate 11 will not cause the inclined block 411 and the inclined plate 410 to separate, because the size of the inclined plate 410 is much larger than the size of the inclined block 411. When the support plate 33 moves close to the waist beam plate 11, the inclined block 411 can move laterally on the inclined surface of the inclined plate 410). Then, the support plate 33 and the waist beam plate 11 are connected and fixed by tightening the bolts 312 to complete the overall support system.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A connection structure between a supporting waist beam and a broken rock mass in a foundation pit, characterized by: The invention comprises four groups of waist beam connection mechanisms (1), four groups of splicing movement mechanisms (2), two groups of supporting and resisting mechanisms (3), four groups of locking mechanisms (4) and a foundation pit body (100), wherein the waist beam connection mechanism (1) is arranged inside the foundation pit body (100), the waist beam connection mechanism (1) is connected to the broken rock mass inside the foundation pit body (100) through two rock anchor rods (101), the splicing movement mechanism (2) is arranged on the waist beam connection mechanism (1), the supporting and resisting mechanism (3) is arranged inside the foundation pit body (100) and is used to support and reinforce the waist beam connection mechanism (1), and the locking mechanism (4) is arranged on the supporting and resisting mechanism (3); The waist beam connection mechanism (1) comprises two waist beam plates (11), the waist beam plates (11) are arranged inside the foundation pit body (100), and a first reinforcement block (12) and a second reinforcement block (13) are respectively arranged between the two waist beam plates (11) on the same side, and the left and right sides of the first reinforcement block (12) and the second reinforcement block (13) are respectively fixedly connected to the two waist beam plates (11), and the waist beam plates (11), the first reinforcement block (12) and the second reinforcement block (13) constitute a waist beam.

2. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 1, characterized in that: The splicing moving mechanism (2) comprises an insert block (21) and a slot (22), wherein the insert blocks (21) are two in number and are respectively arranged on the back sides of the two waist beam plates (11), and the slots (22) are two in number and are respectively opened on the top of the front sides of the two waist beam plates (11). A sliding groove (23) is opened on the back side of the first reinforcement block (12), and the left and right sides of the inner wall of the sliding groove (23) are fixedly connected by a sliding rod (24), and the surface of the sliding rod (24) is slidably connected to the slider (25).

3. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 2, characterized in that: A moving block (26) is installed on the back of the slider (25), two connecting blocks (27) are installed on the back of the moving block (26), the back of the connecting block (27) is fixedly connected to the front of the insert block (21), and a locking mechanism (5) is provided on the top of the first reinforcement block (12).

4. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 3, characterized in that: The locking mechanism (5) comprises a recessed block (51) and a movable column (52), wherein the recessed block (51) is mounted on the top of the first reinforcing block (12), a rubber block (53) is mounted on the top of the recessed block (51), and movable grooves (54) that are interconnected are formed at the top of the recessed block (51), the top of the rubber block (53) and the top of the inner wall of the slide groove (23). The movable column (52) is mounted on the top of the slider (25), and the top of the movable column (52) sequentially passes through the slide groove (23) and the movable groove (54) from bottom to top and extends to the interior of the movable groove (54).

5. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 4, characterized in that: A rotatable rotating block (55) is provided on the top of the rubber block (53), a threaded head (56) is installed on the bottom of the rotating block (55), a threaded groove (57) adapted to the threaded head (56) is provided on the top of the movable column (52), and the bottom end of the threaded head (56) passes through the threaded groove (57) and extends to the inside thereof to be threadedly connected with the inner wall of the threaded groove (57).

6. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 1, characterized in that: The supporting and resisting mechanism (3) comprises a supporting column (31), the supporting column (31) being fixed in a pile pit at the bottom of the inner wall of the foundation pit body (100), two movable supporting blocks (32) being arranged above the supporting column (31), and a resisting plate (33) used in conjunction with the waist beam plate (11) being installed on the side away from each other of the two supporting blocks (32), and a mounting block (34) being arranged at the top end of the supporting column (31), and an adjusting and telescopic mechanism (6) being arranged on the mounting block (34).

7. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 6, characterized in that: The adjusting telescopic mechanism (6) includes an annular mounting groove (61), the annular mounting groove (61) is provided inside the mounting block (34), two rotatable positive thread annular heads (62) and negative thread annular heads (63) are provided inside the annular mounting groove (61), two thread adjustment grooves are provided on the inner wall of the annular mounting groove (61), which are respectively threadedly connected to the positive thread annular head (62) and the negative thread annular head (63), and a rotating shaft (64) is installed at the left end of the positive thread annular head (62) and the right end of the negative thread annular head (63), and the rotating shaft (64) passes through the annular groove at one end close to the support block (32). The rotating shaft (64) is provided with an annular groove (65) on one side close to the supporting block (32), and an annular block (66) is installed on one side close to the annular groove (65). The annular block (66) passes through the annular groove (65) on one side close to the annular groove (65) and extends to the inside thereof to be in rotational contact with the inner wall of the annular groove (65). An annular limiting groove (67) is provided on the inner wall of the annular groove (65), and an annular limiting block (68) is installed on the surface of the annular block (66) and at a position corresponding to the annular limiting groove (67) to be in rotational contact with the annular limiting groove (67).

8. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 7, characterized in that: The supporting and resisting mechanism (3) further comprises a stabilizing block (35) and a card slot (36), wherein the number of the stabilizing blocks (35) is two and they are respectively mounted on the left and right sides of the supporting column (31), a top plate (37) is mounted on the top of the stabilizing block (35), a positioning block (38) is mounted on the top of the top plate (37), a positioning slot (39) adapted to the positioning block (38) is provided at the bottom of the supporting block (32) and at a position corresponding to the positioning block (38), the card slot (36) is provided at the top of the supporting column (31), and a card block (310) is mounted at the bottom of the mounting block (34) and at a position corresponding to the card slot (36).

9. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 1, characterized in that: The locking mechanism (4) comprises a pressing block (41) and a concave plate (42), wherein the pressing block (41) is mounted on the top of the supporting plate (33), and the concave plate (42) is arranged on the back of the second reinforcing block (13). A connecting groove (43) is provided inside the waist beam plate (11) and at a position corresponding to the slot (22). A movable movable block (44) is provided inside the connecting groove (43), and two fixing rods (45) are installed on the front of the inner wall of the connecting groove (43). The rear end of the fixing rod (45) passes through the movable block (44) and extends to the outside thereof to be fixedly connected to the inner wall of the connecting groove (43). A buffer spring (46) is sleeved on the surface of the fixing rod (45).

10. The connection structure between the supporting waist beam and the broken rock mass in the foundation pit according to claim 9, characterized in that: A locking block (47) is installed on one side of the movable block (44) close to the insert block (21); a locking groove (48) is provided on the position of the insert block (21) close to the locking block (47); a side of the movable block (44) close to the concave plate (42) is fixedly connected to the concave plate (42) through an adjusting block (49); a slanted plate (410) is installed on the back side of the concave plate (42); and a movable slanted block (411) used in conjunction with the slanted plate (410) is installed on the bottom of the pressing block (41).

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