A connection structure of foundation pit protection device

Abstract

The present application relates to a connection structure of a foundation pit protection device, which belongs to the technical field of foundation pit construction, and comprises a foundation pit body, a reinforcement layer arranged on the periphery of the foundation pit body, a column body detachably connected to the inner side of the reinforcement layer, and a cross bar detachably connected to the column body, a connection assembly connected to the cross bar detachably connected to the periphery of the column body, and a fixing assembly for fixing the cross bar to the connection assembly is arranged on the connection assembly. The present application has the effect of being able to realize the installation of the cross bar on the column body, so that the cross bar can be conveniently installed on the column body.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit construction, and in particular to a connection structure of a foundation pit protection device. Background Art

[0002] A foundation pit refers to a deep pit temporarily excavated on the ground in order to excavate underground space during the construction process. Foundation pit construction is a common and important task in construction projects, and is usually used for the construction of underground spaces such as basements, underground parking lots, and subway stations.

[0003] During foundation pit construction, in order to reduce the situation where construction workers accidentally fall into the foundation pit and cause casualties among construction workers, a construction fence will be set up around the foundation pit. The fence includes columns and cross bars. The columns are vertically fixed to the ground, and then the cross bars are fixed to the columns by bolts, so that the columns and cross bars together form a protective structure.

[0004] The present application provides another technical solution that can realize the installation of a cross bar on a column so that the cross bar can be conveniently installed on the column, aiming to provide a variety of solution options for technical personnel in the field. Utility Model Content

[0005] In order to realize the installation of the cross bar on the column body so that the cross bar can be conveniently installed on the column body, the present application provides a connection structure of a foundation pit protection device.

[0006] The connection structure of a foundation pit protection device provided in this application adopts the following technical solution:

[0007] A connection structure of a foundation pit protection device includes a foundation pit body, a reinforcement layer arranged on the periphery of the foundation pit body, a column body detachably connected to the inner side of the reinforcement layer, and a cross bar detachably connected to the column body, a connection component detachably connected to the cross bar on the circumferential side of the column body, and a fixing component for fixing the cross bar to the connection component is provided on the connection component.

[0008] By adopting the above technical solution, the connecting assembly is installed on the peripheral side of the column body, and then the cross bar is connected to the connecting assembly, and the cross bar is fixed to the connecting assembly by the fixing assembly, so that the cross bar can be conveniently installed on the column body.

[0009] Preferably, a through hole is provided on the circumferential side of the column body, and the connecting assembly includes an insertion rod plugged into the through hole, a connecting plate fixedly connected to the end of the insertion rod, a first extension plate vertically fixed to one side of the connecting plate, a second extension plate vertically fixed to the side of the first extension plate away from the connecting plate and opposite to the connecting plate, a cover plate hinged to the side of the connecting plate away from the first extension plate, and a clamping member arranged on the side of the second extension plate away from the first extension plate and connected to the cover plate.

[0010] By adopting the above technical solution, the insertion rod is passed through the through hole and rotated in the through hole, so that the connecting plate, the first extension plate and the second extension plate are arranged around the peripheral side of the column body, the cover plate is flipped over, and the cover plate is fixed to the second extension plate by the clamping member, so that the connecting plate is fixed to the column body.

[0011] Preferably, the clamping member includes a rotating shaft fixedly connected to the side of the second extension plate away from the first extension plate and a clamping block rotatably connected to the end of the rotating shaft away from the second extension plate, and a through hole corresponding to the position of the clamping block is provided on the cover plate, and the cross-sectional areas of the through hole and the clamping block are both set to be rectangular, and the cross-sectional area of ​​the through hole is larger than the cross-sectional surface of the clamping block.

[0012] By adopting the above technical solution, the card block is rotated so that the length direction of the card block is consistent with the length direction of the through hole. After the cover plate is covered on the second extension plate, the card block and the rotating shaft both pass through the through hole, and then the card block is rotated so that the length direction of the card block is perpendicular to the length direction of the through hole, thereby fixing the cover plate on the second extension plate.

[0013] Preferably, the fixing assembly includes a connecting component arranged at the bottom of the connecting plate away from the second extension plate and a fixing component arranged on the connecting component, a fixing rod is vertically fixed to one end of the cross bar close to the connecting plate, the connecting component is connected to the fixing rod, and the fixed end of the fixing component is connected to the fixing rod to fix the fixing rod on the connecting component.

[0014] By adopting the above technical solution, the fixing rod is connected to the connecting component, and the fixing end of the fixing component is connected to the fixing rod, so that the fixing rod is fixed to the connecting component.

[0015] Preferably, the connecting component includes a connecting seat fixedly connected to the side of the connecting plate away from the column body and plugged into and matched with the end of the fixing rod away from the cross bar, and a bending plate fixedly connected to the side of the connecting plate away from the column body. The fixing component is arranged on the bending plate, and the fixed end of the fixing component passes through the bending plate and the connecting seat in sequence and plugged into and matched with the fixing rod.

[0016] By adopting the above technical solution, when the fixing rod is inserted into the connecting seat, the fixing end of the fixing component passes through the bending plate and the connecting seat in sequence and is plugged into and matched with the fixing rod, thereby fixing the fixing rod in the connecting seat.

[0017] Preferably, the fixing component includes a bracket fixedly connected to the vertical side of the bending plate and located on the side of the bending plate away from the connecting plate, a plug-in rod slidably connected to the bracket and a limiting piece arranged on the bending plate, the peripheral side of the fixing rod is provided with a plug-in hole which is plugged and matched with the plug-in rod, the end of the plug-in rod away from the plug-in hole is fixedly connected to a turntable, the peripheral side of the plug-in rod is fixedly sleeved with a limiting ring, the peripheral side of the plug-in rod is sleeved with a first spring body fixed between the limiting ring and the bracket, the peripheral side of the plug-in rod is provided with a limiting hole which vertically penetrates the plug-in rod, and the limiting end of the limiting piece is plug-matched with the limiting hole to limit the plug-in rod.

[0018] By adopting the above technical solution, in the initial state, the end of the connecting rod away from the turntable is located on the vertical side of the bending plate. When the fixing rod is inserted into the connecting seat, the connecting rod is plugged into the connecting hole, thereby fixing the fixing rod in the connecting seat.

[0019] Preferably, the limiting member includes a trigger block arranged in the connecting seat and abutting against the end of the fixing rod away from the cross bar, a trigger rod fixedly connected to the bottom surface of the trigger block, a linkage plate fixedly connected to the bottom end of the trigger rod, and a limiting rod vertically fixed to the top surface of the linkage plate and plug-matched with the limiting hole, one end of the trigger rod away from the trigger block vertically penetrates the bottom surface of the connecting seat and the horizontal side of the bending plate in sequence, and the peripheral side of the trigger rod is sleeved with a second spring body fixed between the top surface of the linkage plate and the bottom surface of the horizontal side of the bending plate.

[0020] By adopting the above technical solution, when unlocking is required, the turntable is pulled in the direction away from the bending plate, and the turntable drives the plug-in rod to disengage from the plug-in hole. At this time, the fixing rod can be removed from the connecting seat; when the position of the limit rod corresponds to the position of the limit hole, under the resetting action of the second spring body, the linkage plate drives the limit rod to be plugged and matched with the limit hole, thereby limiting the plug-in rod.

[0021] Preferably, an adjustment frame for adjusting the distance between the two cross bars is provided between two adjacent cross bars.

[0022] By adopting the above technical solution, the adjustment frame is used to adjust the distance between the two cross bars.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Install the connecting assembly on the side of the column body, then connect the cross bar to the connecting assembly, and fix the cross bar to the connecting assembly through the fixing assembly, so that the cross bar can be easily installed on the column body;

[0025] 2. Pass the rod through the through hole and rotate the rod in the through hole so that the connecting plate, the first extension plate and the second extension plate are arranged around the side of the column body, turn over the cover plate, and fix the cover plate on the second extension plate through the clamping piece, so as to fix the connecting plate on the column body;

[0026] 3. When unlocking is required, pull the turntable in the direction away from the bending plate, and the turntable drives the plug-in rod to disengage from the plug-in hole. At this time, the fixing rod can be removed from the connecting seat; when the position of the limit rod corresponds to the position of the limit hole, under the resetting action of the second spring body, the linkage plate drives the limit rod to engage with the limit hole, thereby limiting the plug-in rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of this application.

[0028] Figure 2 It is a structural schematic diagram of the column body and the crossbar of the present application.

[0029] Figure 3 yes Figure 2 A partial enlarged view of part A.

[0030] Figure 4 It is a structural schematic diagram of the column body and sleeve of the present application.

[0031] Figure 5 yes Figure 4 A partial enlarged view of part B.

[0032] Figure 6 It is a schematic diagram of the structure of the connecting component, the fixing component and the crossbar of the present application.

[0033] Figure 7 yes Figure 6 A partial enlarged view of part C.

[0034] Figure 8 yes Figure 6 A partial enlarged view of part D.

[0035] Fig. 9 yes Figure 6 sectional view of .

[0036] Explanation of reference numerals: 1. foundation pit body; 11. reinforcement layer; 111. embedded plate; 12. sleeve; 121. guide groove; 122. locking hole; 13. access door; 14. fixing block; 141. cushion block; 15. locking rod; 16. limit block; 17. elastic member; 2. column body; 21. accommodating cavity; 211. slide groove; 212. slide rod; 213. slide block; 214. reset member; 22. active push block; 23. driven push block; 24. connecting rod; 25. abutment block; 26. extension rod; 27. spring piece; 28. locking Axis; 29, through hole; 3, cross bar; 31, fixing rod; 32, adjusting frame; 4, plug rod; 41, connecting plate; 42, first extension plate; 43, second extension plate; 44, cover plate; 441, through hole; 45, rotating shaft; 451, clamping block; 5, connecting seat; 51, bending plate; 52, bracket; 53, plug rod; 531, turntable; 532, limiting ring; 533, first spring body; 534, limiting hole; 54, trigger block; 541, trigger rod; 542, linkage plate; 543, limiting rod; 544, second spring body. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-9 This application is described in further detail.

[0038] The present application embodiment discloses a connection structure of a foundation pit protection device. Figure 1 and Figure 2 The connection structure of the foundation pit protection device includes a foundation pit body 1, a reinforcement layer 11 arranged on the periphery of the foundation pit body 1, a column body 2 detachably connected to the inner side of the reinforcement layer 11, and a cross bar 3 detachably connected to the column body 2; a sleeve 12 is pre-buried on the inner side of the reinforcement layer 11, a locking component is arranged on the column body 2, and a locking end of the locking component is connected to the sleeve 12 to lock the column body 2 on the sleeve 12. A connecting component connected to the cross bar 3 is detachably connected to the peripheral side of the column body 2, and a fixing component for fixing the cross bar 3 on the connecting component is arranged on the connecting component.

[0039] Reference Figure 1 and Figure 3In this embodiment, the reinforcement layer 11 is a concrete layer cast by concrete, and an embedded plate 111 extending to the outside of the reinforcement layer 11 is embedded in the reinforcement layer 11, and the embedded plate 111 is fixedly connected to the sleeve 12 on the side away from the reinforcement layer 11; the sleeve 12 is a hollow cylinder with an opening at the top, and the bottom end of the column body 2 is plugged into the sleeve 12 through the opening of the sleeve 12; there are multiple sleeves 12, and the multiple sleeves 12 are evenly distributed along the inner side of the reinforcement layer 11; the number of column bodies 2 is consistent with the number of sleeves 12 and corresponds one to one. The cross bar 3 is transversely arranged between two adjacent column bodies 2, so that the column body 2 and the cross bar 3 together form a protective structure for protecting the foundation pit body 1. And in order to facilitate the staff and vehicles to enter and exit the foundation pit body 1, an entry and exit door 13 is hinged between two columns.

[0040] Reference Figure 3 ,and Figure 4 In order to guide the insertion between the column body 2 and the sleeve 12, two symmetrically arranged guide grooves 121 are provided on the inner side wall of the sleeve 12, and two symmetrically arranged guide blocks are fixedly connected to the bottom of the peripheral side of the column body 2, and the guide blocks are slidably connected to the guide grooves 121 corresponding to the positions.

[0041] Reference Figure 3 and Figure 5 A accommodating cavity 21 is provided inside the column body 2, and the locking assembly is arranged in the accommodating cavity 21. In the initial state, the locking end of the locking assembly is located in the accommodating cavity 21 to facilitate the insertion of the column body 2 and the sleeve 12; a locking hole 122 corresponding to the position of the locking end of the locking assembly is provided on the circumferential side of the sleeve 12, and the driving end of the locking assembly can drive the locking end of the locking assembly to pass through the column body 2 and the locking hole 122 in sequence and extend to the outside of the sleeve 12.

[0042] Reference Figure 3 and Figure 5 The locking assembly includes a driving component arranged on the column body 2 and a locking component arranged in the accommodating cavity 21 and abutting against the driving end of the driving component. When the driving end of the driving component abuts against the locking component, the driving end of the driving component pushes the locking end of the locking component to pass through the column body 2 and the locking hole 122 in sequence and extend to the outside of the sleeve 12.

[0043] Reference Figure 3 and Figure 5The driving component includes a threaded rod threadedly connected to the column body 2 and extending into the accommodating cavity 21, an active push block 22 rotatably connected to one end of the threaded rod located in the accommodating cavity 21, and a handle fixedly connected to one end of the threaded rod located outside the column body 2. The threaded rod is horizontally arranged and located above the sleeve 12. When the threaded rod is rotated by the handle, the threaded rod drives the active push block 22 to abut against the locking component, so that the locking end of the locking component sequentially passes through the column body 2 and the locking hole 122 and extends to the outside of the sleeve 12.

[0044] Reference Figure 3 and Figure 5 The locking component includes a driven push block 23 that vertically slides in the accommodating cavity 21 and abuts against the active push block 22, a connecting rod 24 that is coaxially arranged with the driven push block 23 and fixedly connected to the bottom end of the driven push block 23, an abutting block 25 that is fixedly connected to the bottom end of the connecting rod 24, an extension rod 26 that is horizontally fixed in the accommodating cavity 21 and located below the abutting block 25, a spring sheet 27 that is arranged on the extension rod 26, and a locking shaft 28 that is arranged on the spring sheet 27 and plug-fits with the locking hole 122; the cross-sections of the active push block 22 and the driven push block 23 are both truncated cone-shaped, so that when the threaded rod is rotated, the threaded rod drives the active push block 22 to abut against the driven push block 23 and causes the driven push block 23 to move downward.

[0045] Reference Figure 3 and Figure 5 The cross section of the abutment block 25 is truncated cone-shaped, and the end of the abutment block 25 with a smaller cross section area is set downward; the cross section of the spring sheet 27 is V-shaped and its opening faces the abutment block 25, and the extension rod 26 is fixedly connected to the inner side of the spring sheet 27 and is located at the bend of the spring sheet 27. The locking shaft 28 is horizontally fixed to the outer side of the spring sheet 27 and is located at the opening of the spring sheet 27. The position of the locking shaft 28 corresponds to the position of the locking hole 122. The end of the locking shaft 28 away from the spring sheet 27 is sequentially connected to the column body 2 and the locking hole 122 and extends to the outside of the sleeve 12.

[0046] Thus, by rotating the threaded rod with the handle, the threaded rod drives the active push block 22 to abut against the driven push block 23, and the driven push block 23 moves downward, so that the abutment block 25 extends into the spring sheet 27 along the opening of the spring sheet 27, and pushes the spring sheet 27 to expand outward, so that the end of the locking shaft 28 away from the spring sheet 27 sequentially extends to the column body 2 and the locking hole 122 and extends to the outside of the sleeve 12, thereby locking the column body 2 on the sleeve 12. In order to make the column body 2 more firmly locked on the sleeve 12, two locking shafts 28 are provided on the same column body 2, and the two locking shafts 28 are symmetrically fixed on the spring sheet 27, and the number of the locking holes 122 is consistent with the number of the locking shafts 28 and corresponds one to one.

[0047] Reference Figure 3 and Figure 5In order to reset the locking shaft 28, a slide groove 211 is provided on the inner side wall of the accommodating chamber 21. The length direction of the slide groove 211 extends vertically, and a slide rod 212 is fixedly connected in the slide groove 211. The length direction of the slide rod 212 is consistent with the length direction of the slide groove 211. A slider 213 is fixedly connected on the peripheral side of the connecting rod 24. The end of the slider 213 away from the connecting rod 24 extends into the slide groove 211, and the slide rod 212 penetrates the slider 213 and is slidably connected with the slider 213. A reset member 214 is fixedly connected between the inner bottom wall of the slide groove 211 and the bottom surface of the slider 213 and is sleeved on the peripheral side of the slider 212. Therefore, under the unlocking action of the active push block 22, the reset member 214 is reset, so that the connecting rod 24 drives the abutment block 25 to move upward, and then under the reset action of the spring sheet 27, the spring sheet 27 drives the locking shaft 28 to shrink into the accommodating chamber 21, so as to achieve the purpose of unlocking the column body 2 from the sleeve 12.

[0048] Reference Figure 3 and Figure 5 , a locking piece connected to the locking shaft 28 is provided on the circumferential side of the sleeve 12 and above the locking hole 122; the locking piece is used to lock the locking shaft 28 extending outside the sleeve 12. The locking piece includes a fixing block 14 fixed horizontally on the circumferential side of the sleeve 12 and above the locking hole 122, a locking rod 15 vertically penetrating the fixing block 14, a limiting block 16 fixedly connected to the top of the locking rod 15, and an elastic piece 17 sleeved on the circumferential side of the locking rod 15 and located between the limiting block 16 and the fixing block 14; the elastic piece 17 is fixedly connected between the limiting block 16 and the fixing block 14. A plug hole corresponding to the position of the locking rod 15 is provided on the locking shaft 28, and the bottom end of the locking rod 15 is plugged into the plug hole. In this embodiment, the reset piece 214 and the elastic piece 17 are both springs.

[0049] Reference Figure 5 A cushion block 141 is rotatably connected to the top surface of the fixed block 14 and located at one end of the fixed block 14 away from the sleeve 12. The cushion block 141 is rotated so that the top surface end of the cushion block 141 abuts against the bottom surface of the limit block 16, thereby disengaging the locking rod 15 from the socket.

[0050] Reference Figure 4 and Figure 6A through hole 29 is provided on the peripheral side of the column body 2, and the connecting assembly is detachably connected to the column body 2 through the through hole 29. The connecting assembly includes an insertion rod 4 plugged into the through hole 29, a connecting plate 41 fixedly connected to the end of the insertion rod 4, a first extension plate 42 vertically fixed to one side of the connecting plate 41, a second extension plate 43 vertically fixed to the side of the first extension plate 42 away from the connecting plate 41 and opposite to the connecting plate 41, a cover plate 44 hinged to the side of the connecting plate 41 away from the first extension plate 42, and a clamping member arranged on the side of the second extension plate 43 away from the first extension plate 42 and connected to the cover plate 44; the first extension plate 42, the second extension plate 43 and the cover plate 44 are all located below the insertion rod 4, and the connecting plate 41, the first extension plate 42 and the second extension plate 43 are arranged around the peripheral side of the column body 2.

[0051] The insertion rod 4 is passed through the through hole 29 and rotated in the through hole 29 so that the connecting plate 41 , the first extension plate 42 and the second extension plate 43 are arranged around the circumference of the column body 2 , thereby connecting the connecting plate 41 to the column body 2 .

[0052] Reference Figure 6 and Figure 7 The clamping member includes a rotating shaft 45 fixedly connected to the side of the second extension plate 43 away from the first extension plate 42 and a clamping block 451 rotatably connected to the end of the rotating shaft 45 away from the second extension plate 43; a through hole 441 corresponding to the position of the clamping block 451 is opened on the cover plate 44, and the cross-sectional areas of the through hole 441 and the clamping block 451 are both set to be rectangular, and the cross-sectional area of ​​the through hole 441 is larger than the cross-sectional surface of the clamping block 451; thereby rotating the clamping block 451 so that the length direction of the clamping block 451 is consistent with the length direction of the through hole 441. When the cover plate 44 is covered on the second extension plate 43, the clamping block 451 and the rotating shaft 45 both pass through the through hole 441, and then the clamping block 451 is rotated so that the length direction of the clamping block 451 is perpendicular to the length direction of the through hole 441, thereby fixing the cover plate 44 on the second extension plate 43. At this time, the connecting plate 41, the first extension plate 42, the second extension plate 43 and the cover plate 44 are arranged around the column body 2.

[0053] Reference Figure 8 and Fig. 9 The fixing assembly includes a connecting component arranged at the bottom of the connecting plate 41 away from the second extension plate 43 and a fixing component arranged on the connecting component; a fixing rod 31 is vertically fixed to one end of the cross bar 3 close to the connecting plate 41, the connecting component is connected to the fixing rod 31, and the fixed end of the fixing component is connected to the fixing rod 31 to fix the fixing rod 31 on the connecting component.

[0054] Reference Figure 8 and Fig. 9 The connecting member includes a connecting plate 41 fixedly connected to the column body 2 (see Figure 4) side and plugged with the connecting seat 5 at one end of the fixing rod 31 away from the cross bar 3 and fixedly connected to the connecting plate 41 away from the column body 2 (see Figure 4 ) on one side; the cross-section of the bending plate 51 is L-shaped, and the connecting seat 5 is located between the bending plate 51 and the connecting plate 41; the fixing component is arranged on the bending plate 51, and the fixing end of the fixing component passes through the bending plate 51 and the connecting seat 5 in sequence and is plugged into and matched with the fixing rod 31.

[0055] Reference Figure 8 and Fig. 9 The fixing parts include a bracket 52 fixedly connected to the vertical side of the bending plate 51 and located on the side of the bending plate 51 away from the connecting plate 41, a plug rod 53 slidably connected to the bracket 52, and a limiter arranged on the bending plate 51; a plug hole corresponding to the position of the plug rod 53 is opened on the peripheral side of the fixing rod 31, one end of the plug rod 53 is fixedly connected to a rotating disk 531, and the end of the plug rod 53 away from the rotating disk 531 passes through the bracket 52, the bending plate 51 and the connecting seat 5 in sequence and is plugged and matched with the plug hole. A limit ring 532 is fixedly sleeved on the peripheral side of the plug rod 53, and a first spring body 533 is sleeved on the peripheral side of the plug rod 53, and the first spring body 533 is fixed between the limit ring 532 and the bracket 52. A limiting hole 534 is provided on the peripheral side of the plug-in rod 53 and vertically penetrates the plug-in rod 53 . The limiting end of the limiting member is plugged into and matched with the limiting hole 534 to limit the plug-in rod 53 .

[0056] Reference Figure 8 and Fig. 9 The limiting member includes a trigger block 54 disposed in the connection seat 5 and abutting against the end of the fixed rod 31 away from the cross bar 3, a trigger rod 541 fixedly connected to the bottom surface of the trigger block 54, a linkage plate 542 fixedly connected to the bottom end of the trigger rod 541, and a limiting rod 543 vertically fixed to the top surface of the linkage plate 542; the end of the trigger rod 541 away from the trigger block 54 vertically penetrates the bottom surface of the connection seat 5 and the horizontal side of the bending plate 51 in sequence, and the linkage plate 542 is located below the horizontal side of the bending plate 51. The circumferential side of the trigger rod 541 is sleeved with a second spring body 544, which is fixed between the top surface of the linkage plate 542 and the bottom surface of the horizontal side of the bending plate 51; the end of the limiting rod 543 away from the linkage plate 542 is plugged into the limiting hole 534.

[0057] Therefore, in the initial state, the limit rod 543 is inserted into the limit hole 534, the first spring body 533 is compressed between the limit ring 532 and the bracket 52, and the end of the plug-in rod 53 away from the turntable 531 is located on the vertical side of the bending plate 51; when the fixing rod 31 is inserted into the connecting seat 5, the bottom end of the fixing rod 31 abuts against the top surface of the trigger block 54, so that the trigger block 54 drives the limit rod 543 to move downward through the linkage plate 542, so that the limit rod 543 is disengaged from the plug-in connection with the limit hole 534; at this time, the second spring body 544 is in a stretched state, and when the limit rod 543 is disengaged from the plug-in connection with the limit hole 534, under the resetting action of the first spring body 533, the plug-in rod 53 is plugged into and matched with the plug-in hole, thereby fixing the fixing rod 31 in the connecting seat 5. When unlocking is required, pull the turntable 531 in the direction away from the bending plate 51, and the turntable 531 drives the plug-in rod 53 to disengage from the plug-in hole. At this time, the fixing rod 31 can be removed from the connecting seat 5; when the position of the limiting rod 543 corresponds to the position of the limiting hole 534, under the resetting action of the second spring body 544, the linkage plate 542 drives the limiting rod 543 to be plugged and matched with the limiting hole 534, thereby limiting the plug-in rod 53.

[0058] It should be noted that the connecting component on the column body 2 located at the corner of the foundation pit body 1 is set as the first connecting component, and the connecting component on the column body 2 connected to the entry and exit door 13 is also set as the first connecting component, and one group of fixed components is set on each group of first connecting components; the connecting components on the column body 2 located at other positions of the foundation pit body 1 are set as the second connecting component, and two groups of fixed components are set on each group of second connecting components, and the two groups of fixed components are respectively arranged on the side away from each other of the connecting plate 41 and the second extension plate 43.

[0059] Reference Figure 2 An adjustment frame 32 for adjusting the distance between the two adjacent cross bars 3 is provided between two adjacent cross bars 3; a thread threadedly connected to the adjustment frame 32 is provided on the cross bar 3, and the threads on the two adjacent cross bars 3 located on the same horizontal plane have opposite rotation directions; thereby rotating the adjustment frame 32, since the threads on the two cross bars 3 on the same adjustment frame 32 have opposite rotation directions, the two cross bars 3 on the same adjustment frame 32 move in opposite directions to adjust the distance between the two cross bars 3.

[0060] The implementation principle of the connection structure of a foundation pit protection device in an embodiment of the present application is as follows: the column body 2 is inserted into the sleeve 12, and the threaded rod is rotated by the handle, so that the threaded rod drives the active push block 22 to abut against the driven push block 23, and the driven push block 23 moves downward, so that the abutment block 25 extends along the opening of the spring piece 27 into the spring piece 27, and pushes the spring piece 27 outward, so that the end of the locking shaft 28 away from the spring piece 27 is connected to the column body 2 and the locking hole 122 in turn and extends to the outside of the sleeve 12, thereby locking the column body 2 on the sleeve 12.

[0061] Pass the insertion rod 4 through the through hole 29 and rotate the insertion rod 4 in the through hole 29 so that the connecting plate 41, the first extension plate 42 and the second extension plate 43 are arranged around the side of the column body 2, flip the cover plate 44 so that the cover plate 44 covers the second extension plate 43, and fix the cover plate 44 on the second extension plate 43 by the clamping part, so that the connecting plate 41 is connected to the column body 2; at this time, the connecting plate 41, the first extension plate 42, the second extension plate 43 and the cover plate 44 are arranged around the column body 2.

[0062] When the fixing rod 31 is inserted into the connecting seat 5, the bottom end of the fixing rod 31 abuts against the top surface of the trigger block 54, so that the trigger block 54 drives the limiting rod 543 to move downward through the linkage plate 542, so that the limiting rod 543 is disengaged from the insertion with the limiting hole 534; at this time, the second spring body 544 is in a stretched state, and when the limiting rod 543 is disengaged from the insertion with the limiting hole 534, under the resetting action of the first spring body 533, the insertion rod 53 is plugged into and matched with the insertion hole, so that the fixing rod 31 is fixed in the connecting seat 5.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A connection structure of a foundation pit protection device, characterized in that: The invention comprises a foundation pit body (1), a reinforcement layer (11) arranged on the periphery of the foundation pit body (1), a column body (2) detachably connected to the inner side of the reinforcement layer (11), and a cross bar (3) detachably connected to the column body (2), wherein a connecting component connected to the cross bar (3) is detachably connected to the periphery of the column body (2), and a fixing component for fixing the cross bar (3) to the connecting component is arranged on the connecting component; A through hole (29) is provided on the circumferential side of the column body (2), and the connecting component includes an insertion rod (4) plugged into the through hole (29), a connecting plate (41) fixedly connected to the end of the insertion rod (4), a first extension plate (42) vertically fixed on one side of the connecting plate (41), a second extension plate (43) vertically fixed on the side of the first extension plate (42) away from the connecting plate (41) and opposite to the connecting plate (41), a cover plate (44) hinged on the side of the connecting plate (41) away from the first extension plate (42), and a clamping member arranged on the side of the second extension plate (43) away from the first extension plate (42) and connected to the cover plate (44).

2. The connection structure of a foundation pit protection device according to claim 1, characterized in that: The clamping member comprises a rotating shaft (45) fixedly connected to a side of the second extension plate (43) away from the first extension plate (42) and a clamping block (451) rotatably connected to an end of the rotating shaft (45) away from the second extension plate (43); a through hole (441) corresponding to the position of the clamping block (451) is provided on the cover plate (44); the cross-sectional areas of the through hole (441) and the clamping block (451) are both set to be rectangular, and the cross-sectional area of ​​the through hole (441) is larger than the cross-sectional area of ​​the clamping block (451).

3. The connection structure of a foundation pit protection device according to claim 1, characterized in that: The fixing assembly comprises a connecting component arranged at the bottom of a side of the connecting plate (41) away from the second extension plate (43) and a fixing component arranged on the connecting component, a fixing rod (31) is vertically fixed to one end of the cross bar (3) close to the connecting plate (41), the connecting component is connected to the fixing rod (31), and a fixing end of the fixing component is connected to the fixing rod (31) so as to fix the fixing rod (31) on the connecting component.

4. The connection structure of the foundation pit protection device according to claim 3 is characterized in that: The connecting component comprises a connecting seat (5) fixedly connected to a side of a connecting plate (41) away from a column body (2) and plugged into and matched with an end of a fixing rod (31) away from a cross bar (3), and a bending plate (51) fixedly connected to a side of the connecting plate (41) away from a column body (2). The fixing component is arranged on the bending plate (51), and the fixing end of the fixing component passes through the bending plate (51) and the connecting seat (5) in sequence and plugged into and matched with the fixing rod (31).

5. The connection structure of the foundation pit protection device according to claim 4, characterized in that: The fixing component comprises a bracket (52) fixedly connected to the vertical side of the bending plate (51) and located on the side of the bending plate (51) away from the connecting plate (41), a plug-in rod (53) slidably connected to the bracket (52), and a stopper arranged on the bending plate (51); a plug-in hole for plugging with the plug-in rod (53) is provided on the peripheral side of the fixing rod (31); and the end of the plug-in rod (53) away from the plug-in hole is fixedly connected to the rotating disk (51). 31), a limiting ring (532) is fixedly sleeved on the peripheral side of the plug-in rod (53), a first spring body (533) is sleeved on the peripheral side of the plug-in rod (53) and fixed between the limiting ring (532) and the bracket (52), a limiting hole (534) vertically penetrating the plug-in rod (53) is opened on the peripheral side of the plug-in rod (53), and the limiting end of the limiting member is plugged into and matched with the limiting hole (534) to limit the plug-in rod (53).

6. The connection structure of the foundation pit protection device according to claim 5, characterized in that: The limiting member comprises a trigger block (54) arranged in the connection seat (5) and abutting against one end of the fixed rod (31) away from the cross bar (3), a trigger rod (541) fixedly connected to the bottom surface of the trigger block (54), a linkage plate (542) fixedly connected to the bottom end of the trigger rod (541), and a limiting rod (543) vertically fixed on the top surface of the linkage plate (542) and plugged into the limiting hole (534), one end of the trigger rod (541) away from the trigger block (54) vertically penetrates the bottom surface of the connection seat (5) and the horizontal side of the bending plate (51) in sequence, and a second spring body (544) is sleeved on the circumferential side of the trigger rod (541) and fixed between the top surface of the linkage plate (542) and the bottom surface of the horizontal side of the bending plate (51).

7. The connection structure of a foundation pit protection device according to claim 1, characterized in that: An adjustment frame (32) for adjusting the distance between the two cross bars (3) is provided between two adjacent cross bars (3).

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