A safety support structure for deep foundation pits

Abstract

This invention relates to the field of foundation pit support technology and discloses a deep foundation pit safety support structure, including a base, and further comprising: side frames disposed on both sides of the base end, with rotating shafts rotatably disposed on the side frames and hinged to support plates; a support component disposed between the base and the support plates; a protective component disposed within the support plates; a rotating component connected to the protective component; symmetrically distributed brackets disposed on the support plates, with rotating blocks rotatably disposed on the brackets and fixedly connected to connecting frames; an elastic component disposed between the connecting frames and the support plates; and a pressing component installed at the end of the connecting frames away from the rotating blocks; and a positioning component disposed on the support plates. In use, this invention supports the foundation pit wall through two support plates and retractable protective components located between the two support plates, thereby avoiding the problem of low installation efficiency caused by the need to install multiple supports one by one when supporting the foundation pit wall.

Description

Technical Field

[0001] This invention relates to the field of foundation pit support technology, specifically a deep foundation pit safety support structure. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the foundation elevation and foundation plane dimensions; excavation pit support refers to the measures taken to support, reinforce and protect the sidewalls and surrounding environment of the excavation pit in order to ensure the safety of underground structure construction and the surrounding environment.

[0003] Existing foundation pit safety support structures typically use a drive mechanism to slide a connecting plate within a groove. The connecting plate then drives an inclined support, which in turn pushes a support side plate. This causes the support side plate to rotate on the support base plate, changing the angle between them and allowing for support at different angles. However, foundation pit walls require long support lengths and multiple sets of support side plates to support the inner walls. Therefore, the support base plates must be installed one by one at the bottom of the foundation pit, resulting in a significant time commitment and reduced efficiency. Furthermore, the multiple sets of support base plates and support side plates occupy a large amount of space in the foundation pit and are inconvenient to store when not in use.

[0004] Therefore, those skilled in the art have proposed a deep foundation pit safety support structure to address the problems mentioned in the background. Summary of the Invention

[0005] The purpose of this invention is to provide a safe support structure for deep foundation pits to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A deep foundation pit safety support structure includes a base and further includes:

[0008] Side frames are set on both sides of the base end, and rotating shafts are rotatably mounted on the side frames. The rotating shafts are hinged to the support plates. Support components are provided between the base and the support plates to adjust the support angle of the support plates.

[0009] Protective components installed within the support plate are used to support the pit wall;

[0010] A rotating component connected to the protective component is used for retracting and extending the protective component;

[0011] The support plate is symmetrically distributed with brackets, and rotating blocks are rotatably mounted on the brackets. The rotating blocks are fixedly connected to the connecting frame. An elastic component is provided between the connecting frame and the support plate. An extrusion component is installed at the end of the connecting frame away from the rotating block to make the protective component fit against the pit wall.

[0012] The positioning component installed on the support plate is used to simultaneously position the rotating component and the rotating block, thereby enabling the extrusion component to extrude force on the protective component while positioning it.

[0013] As a preferred embodiment of the present invention, the support component includes a fixed frame installed in the middle of the base, a screw is rotatably disposed inside the fixed frame, a movable frame is threadedly connected to the screw and slidably connected to the inner wall of the fixed frame, one end of the movable frame is hinged to a support rod, the end of the support rod away from the movable frame is hinged to the middle of the support plate, and a first rotating wheel is installed at the end of the screw that protrudes from the fixed frame.

[0014] As a preferred embodiment of the present invention, the protective component includes a cavity formed in the support plate, a movable shaft rotatably disposed in the cavity, baffles installed at both ends of the movable shaft, a drum installed on the movable shaft located between the two baffles, and a support net wound on the drum. The protective component also includes an auxiliary baffle.

[0015] As a preferred embodiment of the present invention, the rotating component includes a drive shaft rotatably mounted on the support plate, a second bevel gear installed at one end of the drive shaft that passes through the cavity, a first bevel gear meshing with the second bevel gear installed on the movable shaft, a rotating column installed at one end of the drive shaft that passes through the support plate, and a second rotating wheel installed on the rotating column.

[0016] As a preferred embodiment of the present invention, the elastic component includes a telescopic rod hinged to one side of the support plate, the end of the telescopic rod away from the support plate being hinged to the connecting frame, and the telescopic rod being provided with a first elastic element at both ends connected to the support plate and the connecting frame respectively.

[0017] As a preferred embodiment of the present invention, the extrusion component includes a fixed plate installed on the end of the connecting frame away from the rotating block, movable rods equally spaced and slidably arranged on the fixed plate, a limit plate installed at the top of the movable rods, an mounting frame installed at the bottom of the movable rods, a pressure roller rotatably arranged on the mounting frame, and a second elastic element provided on the movable rods, with its two ends respectively connected to the limit plate and the fixed plate.

[0018] As a preferred embodiment of the present invention, a first positioning groove is provided through the rotating column in a ring-shaped distribution, and a second positioning groove is provided on the rotating block. The first positioning groove and the second positioning groove have the same cross-sectional dimensions, and a guide plate is provided on the rotating block near the second positioning groove.

[0019] As a preferred embodiment of the present invention, the positioning component includes an L-shaped frame mounted on a support plate, a positioning rod slidably disposed on the L-shaped frame, the positioning rod cooperating with the first positioning groove and the second positioning groove, a handle being installed at the end of the positioning rod away from the rotating block, and a fixing member being disposed on the L-shaped frame.

[0020] As a preferred embodiment of the present invention, the fixing member includes a clamping rod that is slidably disposed on the L-shaped frame and perpendicular to the positioning rod. A side plate is installed at the top of the clamping rod. A groove that cooperates with the clamping rod is opened near the handle of the positioning rod. A third elastic member is provided on the clamping rod, with its two ends respectively connected to the side plate and the L-shaped frame.

[0021] As a preferred embodiment of the present invention, a left connecting block and a right connecting block are respectively provided at the near ends of the two bases, and the left connecting block and the right connecting block are provided with connecting holes.

[0022] As a preferred embodiment of the present invention, the bottom of the base is equipped with regularly arranged insertion rods.

[0023] The present invention has the following advantages: In use, the present invention supports the pit wall through two support plates and a retractable protective component located between the two support plates. The rotating component can be positioned by the positioning component, thereby fixing the protective component. The actual support length of the protective component can be controlled as needed. During the positioning process of the rotating component, the rotating block is also positioned, fixing the connecting frame. The pressing component on the connecting frame maintains the pressing effect on the protective component, making the protective component fit closely to the pit wall, thereby achieving a better protective effect. This device can avoid the problem of reduced installation efficiency caused by installing multiple support plates one by one when supporting the pit wall. At the same time, this device does not occupy a lot of pit space during use, and the space occupied during storage is also small. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a safety support structure for deep foundation pits.

[0025] Figure 2 This is a schematic diagram of a partial structure of a deep foundation pit safety support structure.

[0026] Figure 3 This is a schematic diagram of the internal structure of the support plate in a deep foundation pit safety support structure.

[0027] Figure 4 This is a schematic diagram of one side of the connecting frame in a deep foundation pit safety support structure.

[0028] Figure 5 This is a schematic diagram of the other side of the connecting frame in a deep foundation pit safety support structure.

[0029] Figure 6 This is a schematic diagram of the positioning and rotating components in a deep foundation pit safety support structure.

[0030] In the diagram: 1. Base; 2. Side frame; 3. Rotating shaft; 4. Support plate; 5. Support component; 501. Fixed frame; 502. Screw; 503. Moving frame; 504. Support rod; 505. First rotating wheel; 6. Protective component; 601. Cavity; 602. Movable shaft; 603. Drum; 604. Baffle; 605. Support net; 606. Auxiliary stop bar; 7. Rotating component; 701. First bevel gear; 702. Second bevel gear; 703. Drive shaft; 704. Rotating column; 705. Second rotating wheel; 8. Bracket; 9. Rotating block; 10. Connecting frame; 11. Elastic component; 11 01. Telescopic rod; 1102. First elastic element; 12. Extrusion component; 1201. Fixed plate; 1202. Moving rod; 1203. Limiting plate; 1204. Second elastic element; 1205. Mounting bracket; 1206. Pressure roller; 13. First positioning groove; 14. Second positioning groove; 15. Guide plate; 16. Positioning component; 1601. L-shaped frame; 1602. Positioning rod; 1603. Handle; 1604. Locking rod; 1605. Side plate; 1606. Third elastic element; 1607. Locking groove; 17. Left connecting block; 18. Right connecting block; 19. Connecting hole; 20. Insert rod. Implementation

[0031] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. Example

[0032] Please see Figures 1-6 A deep foundation pit safety support structure includes a base 1, and also includes:

[0033] Side frames 2 are set on both sides of the end of the base 1. A rotating shaft 3 is rotatably set on the side frame 2. The rotating shaft 3 is hinged to the support plate 4. A support component 5 is set between the base 1 and the support plate 4 for adjusting the support angle of the support plate 4.

[0034] The protective component 6 installed inside the support plate 4 is used to support the pit wall;

[0035] The rotating component 7, which is connected to the protective component 6, is used to retract and extend the protective component 6.

[0036] The support plate 4 is provided with symmetrically distributed brackets 8. A rotating block 9 is rotatably provided on the support plate 4. The rotating block 9 is fixedly connected to the connecting frame 10. An elastic component 11 is provided between the connecting frame 10 and the support plate 4. A pressing component 12 is installed at the end of the connecting frame 10 away from the rotating block 9 to make the protective component 6 fit against the pit wall.

[0037] The positioning component 16 provided on the support plate 4 is used to simultaneously position the rotating component 7 and the rotating block 9, thereby enabling the pressing component 12 to press the protective component 6 while positioning the protective component 6.

[0038] The pit wall is supported by two support plates 4 and a retractable protective component 6 located between the two support plates 4. The rotating component 7 can be positioned by the positioning component 16, thereby fixing the protective component 6. The actual support length of the protective component 6 can be controlled as needed. During the positioning process of the rotating component 7, the rotating block 9 is also positioned, fixing the connecting frame 10. The pressing component 12 on the connecting frame 10 maintains the pressing effect on the protective component 6, so that the protective component 6 fits against the pit wall, thereby achieving a better protection effect. This device can avoid the problem of long installation time and low installation efficiency caused by installing multiple support plates 4 one by one when supporting the pit wall. At the same time, this device does not occupy a lot of pit space when in use, and the space occupied when stored is also small.

[0039] Please see Figure 1 and Figure 2 The supporting component 5 includes a fixed frame 501 installed in the middle of the base 1. A screw 502 is rotatably arranged inside the fixed frame 501. A movable frame 503 is threadedly connected to the screw 502 and slidably connected to the inner wall of the fixed frame 501. The movable frame 503 is hinged to one end of the support rod 504. The end of the support rod 504 away from the movable frame 503 is hinged to the middle of the support plate 4. A first rotating wheel 505 is installed at one end of the screw 502 that passes through the fixed frame 501.

[0040] In this embodiment, when it is necessary to adjust the protection angle of the support plate 4 and the protective component 6, the first rotating wheel 505 is rotated, which drives the screw 502 to rotate, thereby driving the moving frame 503 to move. In conjunction with the support rod 504, the support plate 4 is rotated, thereby changing the support angle of the support plate 4 and the protective component 6.

[0041] Please see Figure 1 , Figure 2 and Figure 3The protective component 6 includes a cavity 601 formed within the support plate 4. A movable shaft 602 is rotatably disposed within the cavity 601. Baffles 604 are installed at both ends of the movable shaft 602. A drum 603 is installed on the movable shaft 602 located between the two baffles 604. A support net 605 is wound on the drum 603. The protective component 6 also includes an auxiliary stop bar 606. Both support plates 4 are provided with drums 603 for winding the support net 605, thereby enabling bidirectional winding and unwinding. Furthermore, the auxiliary insert 20 can support the support net 605 between the two support plates 4, improving the support effect of the support net 605.

[0042] Please see Figure 1 , Figure 2 and Figure 6 The rotating component 7 includes a drive shaft 703 rotatably mounted on the support plate 4. A second bevel gear 702 is installed at one end of the drive shaft 703 that passes through the cavity 601. A first bevel gear 701 that meshes with the second bevel gear 702 is installed on the movable shaft 602. A rotating column 704 is installed at one end of the drive shaft 703 that passes through the support plate 4. A second rotating wheel 705 is installed on the rotating column 704. Rotating the second rotating wheel 705 drives the rotating column 704 to rotate, which in turn drives the drive shaft 703 to rotate. This, in turn, drives the movable shaft 602 to rotate through the meshing first bevel gear 701 and second bevel gear 702. The rotation of the movable shaft 602 drives the drum 603 to rotate, which in turn releases the support net 605 wound on the drum 603. When the length of the support net 605 released is sufficient for the foundation pit support requirements, the rotation of the second rotating wheel 705 is stopped.

[0043] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 The elastic component 11 includes a telescopic rod 1101 hinged to one side of the support plate 4. The end of the telescopic rod 1101 away from the support plate 4 is hinged to the connecting frame 10. The telescopic rod 1101 is provided with a first elastic element 1102 at both ends connected to the support plate 4 and the connecting frame 10 respectively. The specific structure of the first elastic element 1102 is not limited. Preferably, the first elastic element 1102 is set as a spring. In the natural state, the first elastic element 1102 will push the connecting frame 10 to the side away from the support net 605.

[0044] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5The extrusion component 12 includes a fixed plate 1201 installed on the end of the connecting frame 10 away from the rotating block 9. Equally spaced movable rods 1202 are slidably arranged on the fixed plate 1201. A limiting plate 1203 is installed at the top of the movable rods 1202, and a mounting frame 1205 is installed at the bottom of the movable rods 1202. A pressure roller 1206 is rotatably arranged on the mounting frame 1205. A second elastic element 1204 is provided on the movable rods 1202, with its two ends respectively connected to the limiting plate 1203 and the fixed plate 1201. The specific structure of the second elastic element 1204 is not limited. Preferably, the second elastic element 1204 is a spring. Under the action of the positioning component 16, the rotating block 9 rotates, which drives the connecting frame 10 to rotate, causing the pressure roller 1206 of the extrusion component 12 to press the support net 605 onto the surface of the pit wall and straighten the support net 605.

[0045] Please see Figure 5 and Figure 6 The rotating column 704 has a first positioning groove 13 that is distributed in a ring through it, and the rotating block 9 has a second positioning groove 14. The first positioning groove 13 and the second positioning groove 14 have the same cross-sectional dimensions. The rotating block 9 has a guide plate 15 near the second positioning groove 14. The guide plate 15 is an arc-shaped plate.

[0046] Please see Figure 1 , Figure 2 and Figure 6 The positioning component 16 includes an L-shaped frame 1601 mounted on the support plate 4. A positioning rod 1602 is slidably mounted on the L-shaped frame 1601. The positioning rod 1602 cooperates with the first positioning groove 13 and the second positioning groove 14. A handle 1603 is mounted on the end of the positioning rod 1602 away from the rotating block 9. A fixing component is provided on the L-shaped frame 1601.

[0047] Please see Figure 6 The fixing component includes a locking rod 1604 that is slidably mounted on the L-shaped frame 1601 and perpendicular to the positioning rod 1602. A side plate 1605 is installed at the top of the locking rod 1604. The positioning rod 1602 has a slot 1607 near the handle 1603 that cooperates with the locking rod 1604. The locking rod 1604 is provided with a third elastic element 1606 at both ends that are respectively connected to the side plate 1605 and the L-shaped frame 1601. The specific structure of the third elastic element 1606 is not limited. Preferably, the third elastic element 1606 is a spring.

[0048] In this embodiment, when it is necessary to fix the rotating component 7 by the positioning component 16, the positioning rod 1602 is pushed by the handle 1603, so that the positioning rod 1602 will be inserted into the first positioning groove 13 of the rotating column 704. After the positioning rod 1602 is inserted into the first positioning groove 13, it will continue to move and contact the guide plate 15. Under the action of the guide plate 15, the rotating block 9 will rotate, thereby driving the connecting frame 10 to rotate, so that the pressing component 12 presses the support net 605. When the rotating block 9 rotates to the second positioning groove 14 on it and contacts the positioning rod 1602, the positioning rod... 1602 will be inserted into the second positioning groove 14, thereby positioning the pressing component 12 on the connecting frame 10, so that the pressing component 12 can maintain the pressing effect on the support net 605. When the positioning rod 1602 is inserted into the second slot 1607, the locking rod 1604 on the L-shaped frame 1601 will be locked into the slot 1607 of the positioning rod 1602 under the action of the third elastic element 1606, thereby completing the positioning operation. When it is necessary to remove the positioning rod 1602, simply pull the locking rod 1604 out of the slot 1607 and pull the handle 1603.

[0049] The base 1 has regularly arranged insert rods 20 installed at its bottom. The base 1 can be fixed to the bottom of the pit by the insert rods 20 so as to support the support plate 4. Example

[0050] Please see Figures 1-6 The other contents of this embodiment are the same as those of embodiment 1, except that: a left connecting block 17 and a right connecting block 18 are respectively provided near the two bases 1. The left connecting block 17 and the right connecting block 18 are provided with connecting holes 19. The left connecting block 17 is located on the upper right side of one of the bases 1, and the right connecting block 18 is located on the lower left side of the other base 1. When the protective component 6 is retracted into the support plate 4, the left connecting block 17 and the right connecting block 18 will be stacked together. The two bases 1 are connected together by bolts and the connecting holes 19 on the left connecting block 17 and the right connecting block 18, which facilitates the storage of this device and reduces the space occupied by this device when stored.

[0051] In the implementation of this invention, when it is necessary to support the foundation pit wall, the rotating component 7 drives the movable shaft 602 to rotate. The rotation of the movable shaft 602 drives the drum 603 to rotate, thereby releasing the support net 605 wound on the drum 603. When the length of the support net 605 released is sufficient for the foundation pit support requirements, the rotating component 7 stops, and the base 1 is placed on both sides of the foundation pit wall. At the same time, the base 1 is fixed to the bottom of the foundation pit by the insertion rod 20. At this time, the positioning rod 1602 is pushed by the handle 1603, so that the positioning rod 1602 passes through the rotating component 7. The rotating column 704 is fixed in the first positioning groove 13 of the moving column 704, which in turn fixes the movable shaft 602, preventing the protective component 6 from retracting or extending the support net 605. Furthermore, after the positioning rod 1602 passes through the rotating column 704, it contacts the guide plate 15, causing the rotating block 9 to rotate until the second slot 1607 on the rotating block 9 contacts the positioning rod 1602, and the positioning rod 1602 is inserted into the second slot 1607. During the rotation of the rotating block 9, the connecting frame 10 also rotates, simultaneously compressing the first elastic... The compression member 12, 1102, causes the pressure rollers 1206 on the compression member 12 to compress both sides of the support net 605, thereby making the support net 605 fit against the pit wall and straightening it, thus improving the protective effect. Furthermore, by inserting the auxiliary rod 20 along the support net 605 into the bottom of the pit, the support net 605 can be supported, further enhancing the support effect. When not in use, by disengaging the positioning member 16 from the first and second slots 1607, the first elastic member 1102 connects... When frame 10 is reset, the compression component 12 no longer contacts the support net 605. At this time, the support net 605 can be rolled up, and the base 1 can be removed. The two bases 1 are connected by the left connecting block 17 and the right connecting block 18, along with bolts and connecting holes 19, so that the device can be put together. This device can avoid the problem of long installation time and low installation efficiency caused by installing multiple support plates 4 one by one when supporting the foundation pit wall. At the same time, this device does not require a lot of foundation pit space when in use, and the space occupied when stored is also small.

[0052] In use, this invention supports the pit wall using two support plates 4 and a retractable protective component 6 located between the two support plates 4. The rotating component 7 is positioned by the positioning component 16, thereby fixing the protective component 6. The actual support length of the protective component 6 can be controlled as needed. During the positioning process of the rotating component 7, the rotating block 9 is also positioned, fixing the connecting frame 10. The pressing component 12 on the connecting frame 10 maintains a pressing effect on the protective component 6, ensuring the protective component 6 fits snugly against the pit wall, thus achieving better protection. This device avoids the problems of long installation time and low installation efficiency caused by installing multiple support plates 4 one by one when supporting the pit wall. Furthermore, this device does not require a large amount of pit space during use, and its storage space is also relatively small.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safety support structure for deep foundation pits, comprising a base, characterized in that, Also includes: Side frames are set on both sides of the base end, and rotating shafts are rotatably mounted on the side frames. The rotating shafts are hinged to the support plates. Support components are provided between the base and the support plates to adjust the support angle of the support plates. Protective components installed within the support plate; The protective component includes a cavity opened in the support plate, a movable shaft rotatably arranged in the cavity, baffles installed at both ends of the movable shaft, a drum installed on the movable shaft located between the two baffles, and a support net wound on the drum. The protective component also includes an auxiliary baffle. Rotating components connected to the protective components; The support plate is symmetrically distributed with brackets, and rotating blocks are rotatably mounted on the brackets. The rotating blocks are fixedly connected to the connecting frame. An elastic component is provided between the connecting frame and the support plate. An extrusion component is installed at the end of the connecting frame away from the rotating block to make the protective component fit against the pit wall. The rotating component includes a drive shaft rotatably mounted on the support plate, a second bevel gear installed at one end of the drive shaft that passes through the cavity, a first bevel gear meshing with the second bevel gear installed on the movable shaft, a rotating column installed at one end of the drive shaft that passes through the support plate, and a second rotating wheel installed on the rotating column. The rotating column has a first positioning groove distributed in a ring, and the rotating block has a second positioning groove. The first positioning groove and the second positioning groove have the same cross-sectional dimensions. A guide plate is provided on the rotating block near the second positioning groove. The positioning component installed on the support plate can position the protective component while simultaneously allowing the compression component to compress the protective component. The positioning component includes an L-shaped frame mounted on the support plate, a positioning rod slidably mounted on the L-shaped frame, the positioning rod cooperating with the first positioning groove and the second positioning groove, a handle mounted on the end of the positioning rod away from the rotating block, and a fixing component mounted on the L-shaped frame.

2. The deep foundation pit safety support structure according to claim 1, characterized in that, The support component includes a fixed frame installed in the middle of the base, a screw is rotatably installed inside the fixed frame, a movable frame is threadedly connected to the screw and slidably connected to the inner wall of the fixed frame, one end of the movable frame is hinged to a support rod, the end of the support rod away from the movable frame is hinged to the middle of the support plate, and a first rotating wheel is installed at the end of the screw that protrudes from the fixed frame.

3. The deep foundation pit safety support structure according to claim 1, characterized in that, The elastic component includes a telescopic rod hinged to one side of the support plate, with one end of the telescopic rod away from the support plate hinged to the connecting frame. The telescopic rod is provided with a first elastic element at both ends that are respectively connected to the support plate and the connecting frame.

4. The deep foundation pit safety support structure according to claim 3, characterized in that, The extrusion component includes a fixed plate installed on the end of the connecting frame away from the rotating block. Equally spaced movable rods are slidably arranged on the fixed plate. A limit plate is installed at the top of the movable rod. A mounting frame is installed at the bottom of the movable rod. A pressure roller is rotatably arranged on the mounting frame. A second elastic element is provided on the movable rod, with its two ends respectively connected to the limit plate and the fixed plate.

5. A deep foundation pit safety support structure according to claim 1, characterized in that, The fixing component includes a clamp rod that is slidably mounted on the L-shaped frame and perpendicular to the positioning rod. A side plate is installed at the top of the clamp rod. The positioning rod has a groove near the handle that cooperates with the clamp rod. The clamp rod is provided with a third elastic element at both ends that are respectively connected to the side plate and the L-shaped frame.

6. The deep foundation pit safety support structure according to claim 1, characterized in that, The two bases are respectively provided with a left connecting block and a right connecting block at their near ends, and the left connecting block and the right connecting block are provided with connecting holes.

7. A deep foundation pit safety support structure according to claim 1, characterized in that, The base has regularly arranged insert rods installed at its bottom.

Images