CN114277808A - Steel support adjustable cross brace structure applied to open cut foundation pit - Google Patents

Abstract

The invention relates to the technical field of steel support operation of an open cut foundation pit, and discloses a steel support adjustable cross brace structure applied to the open cut foundation pit; the supporting structure aims to solve the problems that gaps exist between the cross braces and the longitudinal purlins, the space enclosing structure has gradually-changed sections, and when the supporting widths are inconsistent, the cross braces cannot be set to be uniform in length, and the cross braces are inconvenient to set; and filling steel wedges or wood wedges in gaps between the cross braces and the longitudinal braces to prevent the support piles and the foundation pits from deforming, wherein the filling of the steel wedges or the wood wedges is complicated, a large amount of working hours need to be consumed, and the wedges are easy to lose, so that the support construction work efficiency is low; the supporting screw rod of the adjustable device is adjusted to be tightly propped against the longitudinal purlin, so that the transverse supporting piece is effectively connected with the longitudinal purlin, and the auxiliary stabilizing piece and the protection piece are used for carrying out auxiliary fixing and blocking protection on the supporting screw rod; the invention solves the problem that the traditional wedge block is easy to deform, fall off and loosen, thereby ensuring the reliability and stability of the foundation pit supporting system.

Description

Steel support adjustable cross brace structure applied to open cut foundation pit

Technical Field

The invention relates to the technical field of steel support operation of an open cut foundation pit, in particular to an adjustable steel support cross brace structure applied to the open cut foundation pit.

Background

Steel bracing refers to the use of steel pipes, H-sections, angles, etc. to enhance the stability of the engineered structure, typically being inclined connecting members, most commonly herringbone and cross shapes. The steel support is widely applied to the aspects of subway and foundation pit support. The steel support can be recycled, and has the characteristics of economy, environmental protection and the like.

In engineering construction, a steel support is used as a common foundation pit support structure to be applied to pipeline installation engineering with shallow depth. At present, in the open cut foundation pit construction process, a mode of driving and arranging support piles at two sides of a pipeline is mostly adopted as a foundation pit enclosure structure, so that the stability of the foundation pit is ensured, and collapse accidents are avoided. However, when the transverse support is arranged on the longitudinal enclosing purlin, a certain gap exists between the cross brace and the longitudinal enclosing purlin, and the enclosure structure has a gradually-changed section, when the support width is inconsistent, the length of the cross brace is changed along with the change of the length of the cross brace, the length cannot be unified, the cross brace is very inconvenient to set, a steel wedge block or a wood wedge block is generally plugged in the gap between the cross brace and the longitudinal support, and the deformation of the support pile and the foundation pit is prevented. The filling of the steel wedge or the wood wedge is complicated, a large amount of working time needs to be consumed, the wedge is easy to wear, and the supporting construction efficiency is low.

Therefore, the adjustable steel support cross brace structure applied to the open cut foundation pit is provided.

Disclosure of Invention

The invention aims to provide a steel support adjustable cross brace structure applied to an open cut foundation pit, and aims to solve the problems that in the prior art, a certain gap exists between a cross brace and a longitudinal enclosing purlin, a gradual change section exists in an enclosure structure, the cross brace cannot be set to be uniform in length when the supporting width is inconsistent, and the cross brace is inconvenient to set, and a steel wedge block or a wood wedge block is filled in the gap between the cross brace and the longitudinal brace to prevent deformation of a supporting pile and the foundation pit, so that the filling of the steel wedge block or the wood wedge block is complicated, a large amount of working time is consumed, the wedge block is easy to lose, and the supporting construction efficiency is low.

The invention is realized in this way, the steel support adjustable transverse bracing structure applied to the open cut foundation pit comprises a transverse supporting piece, two ends of the transverse supporting piece are respectively attached to the side walls of a longitudinal purlin, the longitudinal purlin is in a U-shaped structure, side plates are arranged between the inner walls of the upper end and the lower end of the supporting structure, the side plates are attached to the ends of the transverse supporting pieces, the longitudinal enclosing purlin is transversely erected between the side walls of the supporting structure through the transverse supporting pieces, and the side wall of the transverse supporting piece is provided with an installation groove, the upper end edge and the lower end edge of the port part of the two ends of the installation groove are respectively welded with a fixed plate, the side wall of the fixed plate is evenly welded with fixed screw sleeves side by side at intervals, the inner cavity of the fixed screw sleeve is provided with a supporting screw rod in a penetrating way, the tail end of the supporting screw rod is arranged by being attached to the side wall of the longitudinal enclosing purlin, and an auxiliary stabilizing piece is arranged between the adjacent supporting screw rods and is connected with a protection piece arranged on the outer wall of the port of the mounting groove.

Furthermore, the upper end of the bottom plate of the longitudinal enclosing purlin at the adjacent position of the side plate is evenly provided with limiting holes side by side at intervals, the bottom of the end of the transverse supporting piece is provided with a limiting lug corresponding to the limiting hole, and when the end of the transverse supporting piece is attached to the side plate and the side wall of the longitudinal enclosing purlin is arranged, the limiting lug is movably clamped in the inner cavity of the limiting hole.

Furthermore, an L-shaped limiting plate is arranged on the side wall of the side plate, the L-shaped limiting plate is arranged opposite to the limiting hole, when the end of the transverse supporting piece is attached to the side plate and the side wall of the longitudinal enclosing purlin is arranged, the tail end vertical plate of the L-shaped limiting plate is attached to the outer wall of the transverse supporting piece far away from one side of the side plate, and a gap is reserved between the L-shaped limiting plate and the top of the transverse supporting piece.

Further, supplementary stabilizing member includes the intermediate lever and the removal cover that the activity cup jointed on the outer wall of intermediate lever both ends respectively, the terminal fixedly connected with stop sleeve of removal cover, stop sleeve's inner chamber is provided with the hexagonal spacing groove, and the fixed cylinder of fixedly connected with on the outer wall of intermediate lever middle part department both sides, the fixed cylinder sets up about the intermediate lever symmetry, the inner chamber activity card cover of fixed cylinder has adjusting screw, adjusting screw's end is provided with integrative commentaries on classics rudder, the screw has cup jointed the shift ring on adjusting screw's the outer wall, respectively link to each other with the one end activity of movable connecting rod through the swing joint spare on the both sides outer wall of shift ring, the other end of movable connecting rod passes through the lateral wall swing joint of swing joint spare and removal cover.

Furthermore, a connecting spring is arranged on the inner wall of the corresponding port of the movable sleeve, the tail end of the connecting spring is fixedly connected with the outer wall of the movable sealing barrel, the movable sealing barrel is movably sleeved in the inner cavity of the movable sleeve, a fixed shaft is arranged between the inner walls of the port of the movable sealing barrel, and the fixed shaft penetrates through the end of the middle rod.

Furthermore, when the hexagonal limiting groove is matched with the end of the supporting screw rod and the limiting sleeve is sleeved on the outer wall of the end of the supporting screw rod in a sleeving manner, the middle rod and the moving sleeve are suspended between the adjacent supporting screw rods on the outer walls of the two ends of the transverse supporting piece, and the connecting spring is in a stretching state; the length of adjusting screw is less than the length between intermediate lever and the mounting groove port outer wall, and when adjusting screw perpendicular to mounting groove lateral wall set up, the terminal helm steering of adjusting screw suspends the inner chamber in the mounting groove.

Further, the protection piece includes the U type fastener of activity block fit on the outer wall of mounting groove top port, end plate is a long and a short setting about the U type fastener, and the horizontal support piece top setting of the long roof laminating at U type fastener top, U type fastener bottom plate extends to the inner chamber of mounting groove, the mounting hole has been seted up to U type fastener upper end both sides, the inner chamber of mounting hole is provided with the locating lever, locating lever through connection U type fastener and horizontal support piece, be provided with L type jib on the outer wall that U type fastener is close to adjusting screw one side, the terminal bottom swing joint of L type jib has the protection casing, the protection casing corresponds adjusting screw setting, the protection casing is cylindric structure, and protection casing roof lower extreme is provided with the installation hanger plate through fixing spring, the protection casing port department is arranged in to the installation hanger plate suspension, and installation hanger plate lower extreme both sides fixedly connected with gag lever.

Further, be provided with an installation section of thick bamboo on the protection casing lateral wall of installation hanger plate one side, the rotary rod has been cup jointed in the inner chamber activity of an installation section of thick bamboo, and the rotary rod extends to the inner chamber of protection casing, and its terminal fixedly connected with regulating block, regulating block are square structure, and when the regulating block stiff end set up towards the protection casing roof, the middle part department outer wall setting of its expansion end laminating installation hanger plate, and the regulating block suspension is in between fixed spring.

Further, when adjusting screw is vertical setting, the protection casing suspension is in adjusting screw top helm steering top, and the regulating block promotes the tensile fixed spring of installation hanger plate for the gag lever post of installation hanger plate bottom is pegged graft in the spacing intracavity of the adjacent fixed link spare of helm steering, and is provided with integrative extension plate on the lateral wall at U type fastener both ends, and even interval is provided with the suspension rod on extension plate and the U type fastener lateral wall, and the suspension rod inclines side by side and suspends in supporting screw's top.

Further, the rotary rod extends to the terminal fixedly connected with connection pad of protection casing inside, is provided with first support strip on the both sides outer wall of connection pad one end, is provided with the second support bar on the both sides outer wall of the connection pad other end, and first support strip and second support bar all are outer splayed setting, and the length of first support strip is greater than the length of second support bar, and when second support bar contact installation hanger plate outer wall, fixed spring keeps normal diastole state.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention provides a steel support adjustable transverse bracing structure applied to an open cut foundation pit, wherein two ends of a transverse supporting piece are respectively attached to the side walls of a longitudinal enclosing purlin, the longitudinal enclosing purlin is in a U-shaped structure, side plates are arranged between the inner walls of the upper end and the lower end of the longitudinal enclosing purlin, the side plates are attached to the ends of the transverse supporting piece, the longitudinal enclosing purlin is transversely erected between the side walls of a supporting structure through the transverse supporting piece, the side walls of the transverse supporting piece are provided with mounting grooves, fixing plates are respectively welded at the upper end edge and the lower end edge of the port part of each mounting groove, fixing screw sleeves are uniformly welded on the side walls of the fixing plates side by side at intervals, a supporting screw rod penetrates through the inner cavity of each fixing screw sleeve, the longitudinal enclosing purlin is attached to the side walls of the supporting structure, the transverse supporting piece is transversely arranged between the side walls of the longitudinal enclosing purlin, then the transverse supporting piece extends into the lower part of an L-shaped limiting plate to enable the end to be attached to the side walls of the longitudinal enclosing purlin, so that a limiting lug at the bottom of the end of the transverse supporting piece is movably clamped in a limiting hole on the bottom plate of the longitudinal enclosing purlin, then the rotary supporting screw rod makes it advance with the help of the fixed swivel nut on the fixed plate outer wall is rotatory for the supporting screw rod with vertically enclose the purlin and push up each other tightly, realize horizontal support piece and vertically enclose the effective connection of purlin, and then promote horizontal support more firm, reliable, can effectively eliminate the steel voussoir or the wood voussoir that leads to because of the support system warp and drop, the unsafe factor that becomes flexible and bring, reduce the potential safety hazard of operation process and then improve steel braced system's security, convenient to use is swift.

2. The invention provides a steel support adjustable cross brace structure applied to an open cut foundation pit, wherein a movable sleeve is movably sleeved on the outer walls of two ends of an intermediate rod, the tail end of the movable sleeve is fixedly connected with a limit sleeve, the inner cavity of the limit sleeve is provided with a hexagonal limit groove, fixed cylinders are fixedly connected on the outer walls of two sides of the middle part of the intermediate rod, the fixed cylinders are symmetrically arranged relative to the intermediate rod, an adjusting screw rod is movably clamped in the inner cavity of the fixed cylinders, the tail end of the adjusting screw rod is provided with an integrated steering wheel, a movable ring is sleeved on the outer wall of the adjusting screw rod in a threaded manner, the outer walls of two sides of the movable ring are respectively movably connected with one end of a movable connecting rod through movable connecting pieces, the other end of the movable connecting rod is movably connected with the side wall of the movable sleeve through the movable connecting pieces, after the support screw rod abuts against the side wall of a longitudinal purlin to be transversely supported, the limit sleeve at one end of the intermediate rod is sleeved on the outer wall of the end of the support screw rod, so that the intermediate rod, the movable sleeve and the support screw rod are horizontally arranged, then the adjusting screw on the outer wall of the middle rod is synchronously rotated by two hands, when the adjusting screw is clamped and rotated in the inner cavity of the fixed cylinder, the adjusting screw drives the moving ring on the outer wall of the adjusting screw to move close to the middle rod, the moving ring drives the movable connecting rod to push the moving sleeve to move on the outer wall of the middle rod when moving, the middle rod and the moving sleeve are extended, so that the limiting sleeve at the other end of the middle rod is sleeved on the outer wall of the end head of the supporting screw at the other end of the transverse supporting piece, the middle rod is utilized, the supporting screw at the two ends of the transverse supporting piece is supported and fixed by the moving sleeve and the limiting sleeve, the problem that the steel support is unstable due to the fact that the supporting screw is loosened by mistaken touch rotation is avoided, the stability of a steel support system is fully ensured, and the device is convenient and practical.

3. The invention provides a steel support adjustable cross brace structure applied to an open cut foundation pit, wherein mounting holes are formed in two sides of the upper end of a U-shaped clamping piece, a positioning rod is arranged in the inner cavity of each mounting hole and penetrates through and is connected with the U-shaped clamping piece and a transverse supporting piece, an L-shaped suspender is arranged on the outer wall of one side, close to an adjusting screw, of the U-shaped clamping piece, the bottom of the tail end of the L-shaped suspender is movably connected with a protective cover, the protective cover is arranged corresponding to the adjusting screw, a cylindrical structure is adopted in the protective cover, a mounting hanging plate is arranged at the lower end of a top plate of the protective cover through a fixing spring, the mounting hanging plate is suspended at the port of the protective cover, limiting rods are fixedly connected to two sides of the lower end of the mounting hanging plate, a mounting barrel is arranged on the side wall of the protective cover on one side of the mounting hanging plate, a rotating rod is movably sleeved in the inner cavity of the mounting barrel, the rotating rod extends to the inner cavity of the protective cover, an adjusting block is fixedly connected with an adjusting block at the tail end of the adjusting block, and the adjusting block is of a square structure, and the movable end is attached to the outer wall of the middle part of the mounting hanging plate, the side walls at two ends of the U-shaped clamping piece are provided with an integrated extension plate, suspension rods are uniformly arranged on the side walls of the extension plate and the U-shaped clamping piece at intervals, the suspension rods are suspended above the supporting screw rod in an inclined mode side by side, the U-shaped clamping piece is clamped on the outer wall of a port at the top of the mounting groove, a positioning rod is inserted into a mounting hole of the U-shaped clamping piece, the U-shaped clamping piece and a transverse supporting piece are connected through the positioning rod, a protective cover on the outer wall of the U-shaped clamping piece is suspended above a steering wheel at the top of the adjusting screw rod, a rotating rod on the side wall of the rotary protective cover is rotated to drive a regulating block at the tail end of the rotary protective cover to deflect, so that the movable end of the regulating block is attached to the outer wall of the mounting hanging plate and stretches a fixing spring, the limiting rod at the bottom of the mounting hanging plate is inserted into a limiting cavity of an adjacent fixing rod piece of the steering wheel, the top of the adjusting screw rod is isolated and limited by the limiting rod and the protective cover, and the stability of the steel support is prevented from being influenced by the touch of the adjusting screw rod, and the upper suspension rods of the side walls of the extension plate and the U-shaped clamping piece are suspended above the supporting screw in a side-by-side inclined manner, and the suspension rods are utilized to separate and block the earthwork blocks falling above the foundation pit, so that the earthwork blocks are prevented from impacting and damaging the supporting screw to affect use, and the use is safe and reliable.

Drawings

FIG. 1 is a schematic view of the overall structure of an adjustable steel support cross brace structure applied to an open cut foundation pit according to the present invention;

FIG. 2 is a schematic view of a support screw mounting structure of the steel support adjustable cross brace structure applied to an open cut foundation pit according to the present invention;

FIG. 3 is a schematic view of the installation structure of the transverse support member and the longitudinal purlin of the steel support adjustable cross brace structure applied to the open cut foundation pit;

fig. 4 is an enlarged structural schematic view of a portion a in fig. 3 of the steel support adjustable cross brace structure applied to the open cut foundation pit according to the present invention;

FIG. 5 is a schematic structural view of an extended state of an auxiliary stabilizer of the steel support adjustable cross brace structure applied to an open cut foundation pit according to the present invention;

FIG. 6 is a schematic structural view of a contracted state of an auxiliary stabilizing member of the steel support adjustable cross brace structure applied to an open cut foundation pit according to the present invention;

FIG. 7 is a schematic view of an installation structure of an intermediate rod and a movable sleeve of the steel support adjustable cross brace structure applied to an open cut foundation pit;

FIG. 8 is a schematic structural view of a protection member of an adjustable steel support cross brace structure applied to an open cut foundation pit according to the present invention;

fig. 9 is an enlarged structural schematic view of a portion B in fig. 8 of the steel support adjustable cross brace structure applied to the open cut foundation pit according to the present invention;

fig. 10 is a schematic structural view of a first embodiment of an adjustable steel support cross brace structure applied to an open cut foundation pit according to the present invention;

fig. 11 is a structural schematic diagram of a second embodiment of the adjustable steel support cross brace structure applied to an open cut foundation pit according to the present invention.

In the figure: 1. a transverse support; 2. longitudinally enclosing purlins; 3. a side plate; 4. a support structure; 5. mounting grooves; 6. a fixing plate; 7. fixing the threaded sleeve; 8. a support screw; 9. an auxiliary stabilizer; 91. an intermediate lever; 92. moving the sleeve; 921. a connecting spring; 922. moving the sealing cylinder; 923. a fixed shaft; 93. a limiting sleeve; 94. a hexagonal limiting groove; 95. a fixed cylinder; 96. adjusting the screw rod; 97. a moving ring; 98. a movable connecting piece; 99. a movable connecting rod; 10. a guard; 101. a U-shaped clamping piece; 102. mounting holes; 103. positioning a rod; 104. an L-shaped boom; 105. a protective cover; 106. fixing the spring; 107. installing a hanging plate; 108. a limiting rod; 109. mounting the cylinder; 1010. rotating the rod; 1011. an adjusting block; 1012. a connecting disc; 1013. a first support bar; 1014. a second supporting strip; 1015. an extension plate; 1016. a suspension rod; 11. a limiting hole; 12. a limiting bump; 13. an L-shaped limiting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Referring to fig. 1-4, preferred embodiments of the present invention are shown.

The steel support adjustable transverse bracing structure applied to the open cut foundation pit comprises a transverse supporting piece 1, two ends of the transverse supporting piece 1 are respectively attached to the side walls of a longitudinal purlin 2, the longitudinal purlin 2 is of a U-shaped structure, a side plate 3 is arranged between the inner walls of the upper end and the lower end of the upper support piece, the side plate 3 is attached to the end head of the transverse support piece 1, and the longitudinal enclosing purlin 2 is transversely erected between the side walls of the supporting structure 4 through the transverse supporting piece 1, the side wall of the transverse supporting piece 1 is provided with an installation groove 5, the upper end edge and the lower end edge of the port part of the two ends of the installation groove 5 are respectively welded with a fixed plate 6, the side wall of the fixed plate 6 is evenly welded with fixed screw sleeves 7 side by side at intervals, the inner cavity of the fixed screw sleeve 7 is provided with a supporting screw 8 in a penetrating way, the tail end of the supporting screw 8 is attached to the side wall of the longitudinal enclosing purlin 2, and auxiliary stabilizing members 9 are provided between the adjacent supporting screws 8, and the auxiliary stabilizing members 9 are connected with shielding members 10 provided on the outer walls of the ports of the mounting groove 5.

Spacing holes 11 are arranged side by side at the upper end of a bottom plate of the longitudinal enclosing purlin 2 at the adjacent position of the side plate 3 at even intervals, a spacing lug 12 is arranged at the position corresponding to the spacing holes 11 at the bottom of the end of the transverse supporting member 1, and when the end of the transverse supporting member 1 is attached to the side plate 3 and the side wall of the longitudinal enclosing purlin 2 is arranged, the spacing lug 12 is movably clamped in an inner cavity of the spacing hole 11.

Be provided with L type limiting plate 13 on the lateral wall of curb plate 3, L type limiting plate 13 sets up with spacing hole 11 relatively, and when 1 end laminating curb plate 3 of horizontal support piece and vertically enclosing 2 lateral walls of purlin set up, the outer wall setting of 3 one sides of curb plate is kept away from to terminal riser laminating horizontal support piece 1 of L type limiting plate 13, leaves the gap between L type limiting plate 13 and 1 tops of horizontal support piece.

Specifically, the side walls of a longitudinal enclosing purlin 2 attached supporting structure 4 are placed, a transverse supporting piece 1 is horizontally arranged between the side walls of the longitudinal enclosing purlins 2, then the transverse supporting piece 1 extends into the lower part of an L-shaped limiting plate 13 to enable the end of the transverse supporting piece to be attached to the side wall of the longitudinal enclosing purlin 2, a limiting lug 12 at the bottom of the end of the transverse supporting piece 1 is movably clamped in an inner cavity of a limiting hole 11 on a bottom plate of the longitudinal enclosing purlin 2, then a supporting screw 8 is rotated to advance by means of a fixing screw sleeve 7 on the outer wall of a fixing plate 6, so that the supporting screw 8 and the longitudinal enclosing purlin 2 are mutually propped tightly, the effective connection of the transverse supporting piece 1 and the longitudinal enclosing purlin 2 is realized, the transverse supporting is further pushed to be firmer and more reliable, unsafe factors caused by falling and loosening of steel wedges or wood wedges due to deformation of a supporting system can be effectively eliminated, the potential safety hazard in the operation process is reduced, and the safety of a steel supporting system is further improved, the use is convenient and fast.

Referring to fig. 1 and 5-7, a preferred embodiment of the present invention is provided.

Auxiliary stabilizing piece 9 includes intermediate lever 91 and the removal cover 92 of cup jointing respectively on intermediate lever 91 both ends outer wall, the terminal fixedly connected with stop sleeve 93 of removal cover 92, the inner chamber of stop sleeve 93 is provided with hexagonal spacing groove 94, and fixedly connected with solid fixed cylinder 95 on the outer wall of intermediate lever 91 middle part department both sides, gu fixed cylinder 95 sets up about intermediate lever 91 symmetry, gu fixed cylinder 95's inner chamber activity bayonet catch has adjusting screw 96, adjusting screw 96's end is provided with integrative commentaries on classics rudder, screw thread has cup jointed shift ring 97 on adjusting screw 96's the outer wall, it links to each other with the one end activity of movable connecting rod 99 through movable connecting piece 98 respectively on shift ring 97's the both sides outer wall, movable connecting piece 98 and the lateral wall swing joint of removal cover 92 are passed through to the other end of movable connecting rod 99.

The inner wall of the corresponding port of the movable sleeve 92 is provided with a connecting spring 921, the tail end of the connecting spring 921 is fixedly connected with the outer wall of the movable sealing barrel 922, the movable sealing barrel 922 is movably sleeved in the inner cavity of the movable sleeve 92, a fixing shaft 923 is arranged between the inner walls of the port of the movable sealing barrel 922, and the fixing shaft 923 penetrates through the end of the middle rod 91.

The hexagonal limiting groove 94 is matched with the end of the support screw 8, and when the limiting sleeve 93 is clamped on the outer wall of the end of the support screw 8 in a sleeving manner, the middle rod 91 and the moving sleeve 92 are suspended between the adjacent support screws 8 on the outer walls of the two ends of the transverse support member 1, and the connecting spring 921 is in a stretching state; the length of the adjusting screw 96 is less than the length between the middle rod 91 and the outer wall of the port of the mounting groove 5, and when the adjusting screw 96 is arranged perpendicular to the side wall of the mounting groove 5, the rudder at the tail end of the adjusting screw 96 is suspended in the inner cavity of the mounting groove 5.

Specifically, after the supporting screw 8 abuts against the side wall of the longitudinal purlin 2 to transversely support, the limiting sleeve 93 at one end of the middle rod 91 is sleeved on the outer wall of the end of the supporting screw 8, so that the middle rod 91, the moving sleeve 92 and the supporting screw 8 are horizontally arranged, then the adjusting screw 96 on the outer wall of the middle rod 91 is synchronously rotated by two hands, when the adjusting screw 96 is clamped and rotated in the inner cavity of the fixed cylinder 95, the adjusting screw 96 drives the moving ring 97 on the outer wall to move towards the middle rod 91, the moving ring 97 drives the movable connecting rod 99 to push the moving sleeve 92 to move on the outer wall of the middle rod 91 when moving, the middle rod 91 and the moving sleeve 92 are extended, so that the limiting sleeve 93 at the other end of the middle rod 91 is sleeved on the outer wall of the end of the supporting screw 8 at the other end of the transverse supporting member 1, and the supporting screws 8 at the two ends of the transverse supporting member 1 are supported and fixed by the middle rod 91, the moving sleeve 92 and the limiting sleeve 93, avoid supporting screw 8 to receive the rotatory pine of mistake to move back and cause the unstable problem of steel shotcrete, fully guaranteed steel braced system's stability, convenient practicality.

Referring to fig. 1 and 8-10, a preferred embodiment of the present invention is provided.

The protection member 10 comprises a U-shaped clamping piece 101 which is movably clamped on the outer wall of the top port of the mounting groove 5, the upper end plate and the lower end plate of the U-shaped clamping piece 101 are arranged in a long and short way, a long top plate at the top of the U-shaped clamping piece 101 is arranged by being attached to the top of the transverse supporting piece 1, the bottom plate of the U-shaped clamping piece 101 extends to the inner cavity of the mounting groove 5, mounting holes 102 are formed in two sides of the upper end of the U-shaped clamping piece 101, a positioning rod 103 is arranged in the inner cavity of each mounting hole 102, the positioning rod 103 penetrates through and is connected with the U-shaped clamping piece 101 and the transverse supporting piece 1, an L-shaped suspender 104 is arranged on the outer wall of one side, close to the adjusting screw 96, of the U-shaped clamping piece 101, a protective cover 105 is movably connected to the bottom of the tail end of the L-shaped suspender 104, the protective cover 105 is arranged corresponding to the adjusting screw 96, and the protective cover 105 is of a cylindrical structure, and the lower end of the top plate of the protective cover 105 is provided with an installation hanging plate 107 through a fixed spring 106, the installation hanging plate 107 is suspended at the port of the protective cover 105, and two sides of the lower end of the installation hanging plate 107 are fixedly connected with limiting rods 108.

Be provided with installation section of thick bamboo 109 on the protection casing 105 lateral wall of installation hanger plate 107 one side, the inner chamber activity of installation section of thick bamboo 109 has cup jointed rotary rod 1010, rotary rod 1010 extends to the inner chamber of protection casing 105, its terminal fixedly connected with regulating block 1011, regulating block 1011 is square structure, when regulating block 1011 stiff end set up towards protection casing 105 roof, the middle part department outer wall setting of its expansion end laminating installation hanger plate 107, and regulating block 1011 suspension in between fixed spring 106.

When adjusting screw 96 is vertical setting, protection casing 105 suspension in adjusting screw 96 top helm, regulating block 1011 promotes the tensile fixed spring 106 of installation hanger plate 107 for the gag lever post 108 of installation hanger plate 107 bottom is pegged graft in the spacing intracavity of the adjacent fixed rod piece of helm, and is provided with integrative extension plate 1015 on the lateral wall at U type fastener 101 both ends, and even interval is provided with hanging rod 1016 on extension plate 1015 and the U type fastener 101 lateral wall, and hanging rod 1016 inclines side by side and suspends in the top of supporting screw 8.

Specifically, a U-shaped clamping piece 101 is clamped on the outer wall of a port at the top of an installation groove 5, a positioning rod 103 is inserted into an installation hole 102 of the U-shaped clamping piece 101, the positioning rod 103 is used for penetrating and connecting the U-shaped clamping piece 101 and a transverse supporting piece 1, a protective cover 105 on the outer wall of the U-shaped clamping piece 101 is suspended above a steering wheel at the top of an adjusting screw 96, a rotating rod 1010 on the side wall of the rotating protective cover 105 drives an adjusting block 1011 at the tail end of the rotating protective cover to deflect, so that the movable end of the adjusting block 1011 is attached to the outer wall of an installation hanging plate 107 and stretches a fixed spring 106, a limiting rod 108 at the bottom of the installation hanging plate 107 is inserted into a limiting cavity of an adjacent fixed rod piece of the steering wheel, the top of the adjusting screw 96 is isolated and limited by the limiting rod 108 and the protective cover 105, the steel support stability is prevented from being influenced by the touch of the adjusting screw 96, and a hanging rod 1016 on the side wall of the extension plate 1015 and the U-shaped clamping piece 101 is suspended above a supporting screw 8 in an inclined manner side by side, utilize suspension arm 1016 to separate the fender to the earthwork stone that the foundation ditch top dropped, avoid the earthwork stone to cause impact damage to supporting screw 8 and influence the use, safe and reliable.

As shown in fig. 11, in the second embodiment, the end of the rotating rod 1010 extending into the protective cover 105 is fixedly connected with a connecting disc 1012, the outer walls of the two sides of one end of the connecting disc 1012 are provided with first supporting bars 1013, the outer walls of the two sides of the other end of the connecting disc 1012 are provided with second supporting bars 1014, the first supporting bars 1013 and the second supporting bars 1014 are arranged in a shape like a Chinese character 'ba', the length of the first supporting bars 1013 is greater than that of the second supporting bars 1014, and when the second supporting bars 1014 contact the outer walls of the mounting hanging plate 107, the fixing spring 106 maintains a normal relaxation state.

Specifically, rotary rod 1010 rotates and drives the connection pad 1012 and rotate, switch first support strip 1013 and second support strip 1014 contact laminating installation hanger plate 107 outer wall during connection pad 1012 is rotatory, utilize the difference in height between first support strip 1013 and second support strip 1014 to realize that gag lever post 108 is dead with the unblock to the spacing lock of adjusting screw 96 top helm, first support strip 1013 and second support strip 1014 are outer splayed setting simultaneously, contact installation hanger plate 107 that can be more stable, avoid receiving fixed spring 106's influence and cause the crowded rotation of pushing of rotary rod 1010.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The steel support adjustable cross brace structure applied to the open cut foundation pit is characterized by comprising a transverse support member (1), wherein two ends of the transverse support member (1) are respectively attached to side walls of a longitudinal enclosing purlin (2), the longitudinal enclosing purlin (2) is of a U-shaped structure, a side plate (3) is arranged between inner walls of the upper end and the lower end of the transverse support member, the end of the side plate (3) attached to the transverse support member (1) is arranged, the longitudinal enclosing purlin (2) is transversely erected between the side walls of a supporting structure (4) through the transverse support member (1), an installation groove (5) is formed in the side wall of the transverse support member (1), fixing plates (6) are respectively welded at the upper end edge and the lower end edge of two end ports of the installation groove (5), fixing thread sleeves (7) are evenly welded on the side wall of each fixing plate (6) side by side at intervals, a support screw (8) penetrates through an inner cavity of each fixing thread sleeve (7), the tail end of each support screw (8) is attached to the side wall of the longitudinal enclosing purlin (2), and auxiliary stabilizing pieces (9) are arranged between the adjacent supporting screw rods (8), and the auxiliary stabilizing pieces (9) are connected with protection pieces (10) arranged on the outer walls of the ports of the mounting grooves (5).

2. The adjustable steel brace cross brace structure for open cut foundation pit according to claim 1, wherein: spacing holes (11) are arranged side by side at the upper end of a bottom plate of the longitudinal enclosing purlin (2) at the adjacent position of the side plate (3) at even intervals, spacing lugs (12) are arranged at the positions, corresponding to the spacing holes (11), of the bottom of the end head of the transverse supporting member (1), and when the end head of the transverse supporting member (1) is attached to the side plate (3) and the side wall of the longitudinal enclosing purlin (2) is arranged, the spacing lugs (12) are movably clamped in the inner cavity of the spacing holes (11).

3. The adjustable steel brace cross brace structure for open cut foundation pit according to claim 2, wherein: be provided with L type limiting plate (13) on the lateral wall of curb plate (3), L type limiting plate (13) set up with spacing hole (11) relatively, and when horizontal support piece (1) end laminating curb plate (3) and vertically enclose purlin (2) lateral wall setting, the outer wall setting of curb plate (3) one side is kept away from in terminal riser laminating horizontal support piece (1) of L type limiting plate (13), leaves the gap between L type limiting plate (13) and horizontal support piece (1) top.

4. The adjustable steel brace cross brace structure for open cut foundation pit according to claim 1, wherein: the auxiliary stabilizing part (9) comprises an intermediate rod (91) and moving sleeves (92) respectively movably sleeved on the outer walls of two ends of the intermediate rod (91), the tail ends of the moving sleeves (92) are fixedly connected with limiting sleeves (93), the inner cavities of the limiting sleeves (93) are provided with hexagonal limiting grooves (94), and fixedly connected with solid fixed cylinder (95) on the outer wall of middle part department both sides of intermediate lever (91), gu fixed cylinder (95) sets up about intermediate lever (91) symmetry, the inner chamber activity pot head of solid fixed cylinder (95) has adjusting screw (96), the end of adjusting screw (96) is provided with integrative commentaries on classics rudder, screw thread cover has shift collar (97) on the outer wall of adjusting screw (96), link to each other with the one end activity of activity connecting rod (99) through swing joint (98) respectively on the both sides outer wall of shift collar (97), the other end of activity connecting rod (99) passes through swing joint (98) and the lateral wall swing joint of removal cover (92).

5. The adjustable steel brace cross brace structure for open cut foundation pit according to claim 4, wherein: the inner wall of the corresponding port of the movable sleeve (92) is provided with a connecting spring (921), the tail end of the connecting spring (921) is fixedly connected with the outer wall of the movable sealing cylinder (922), the movable sealing cylinder (922) is movably sleeved in the inner cavity of the movable sleeve (92), a fixing shaft (923) is arranged between the inner walls of the port of the movable sealing cylinder (922), and the fixing shaft (923) penetrates through the end of the middle rod (91).

6. The adjustable steel brace cross brace structure for open cut foundation pit according to claim 5, wherein: the hexagonal limiting groove (94) is matched with the end of the supporting screw rod (8), and when the limiting sleeve (93) is clamped on the outer wall of the end of the supporting screw rod (8), the middle rod (91) and the moving sleeve (92) are suspended between the adjacent supporting screw rods (8) on the outer walls of the two ends of the transverse supporting piece (1), and the connecting spring (921) is in a stretching state; the length of the adjusting screw rod (96) is smaller than the length between the middle rod (91) and the outer wall of the port of the mounting groove (5), and when the adjusting screw rod (96) is perpendicular to the side wall of the mounting groove (5), the steering at the tail end of the adjusting screw rod (96) is suspended in the inner cavity of the mounting groove (5).

7. The adjustable steel brace cross brace structure for open cut foundation pit according to claim 4, wherein: the protection piece (10) comprises a U-shaped clamping piece (101) movably clamped on the outer wall of a port at the top of the installation groove (5), the upper end plate and the lower end plate of the U-shaped clamping piece (101) are arranged in a long and short mode, a long top plate at the top of the U-shaped clamping piece (101) is arranged in a mode of being attached to the top of the transverse supporting piece (1), the bottom plate of the U-shaped clamping piece (101) extends to the inner cavity of the installation groove (5), installation holes (102) are formed in two sides of the upper end of the U-shaped clamping piece (101), a positioning rod (103) is arranged in the inner cavity of each installation hole (102), the positioning rod (103) is connected with the U-shaped clamping piece (101) and the transverse supporting piece (1) in a penetrating mode, an L-shaped suspender (104) is arranged on the outer wall of one side, close to the adjusting screw rod (96), the bottom of the tail end of the L-shaped suspender (104) is movably connected with a protection cover (105), the protection cover (105) is arranged corresponding to the adjusting screw rod (96), and the protection cover (105) is of a cylindrical structure, and the lower end of the top plate of the protective cover (105) is provided with an installation hanging plate (107) through a fixed spring (106), the installation hanging plate (107) is suspended at the port of the protective cover (105), and two sides of the lower end of the installation hanging plate (107) are fixedly connected with limiting rods (108).

8. The adjustable steel brace cross brace structure for open cut foundation pit according to claim 7, wherein: be provided with installation section of thick bamboo (109) on protection casing (105) lateral wall of installation hanger plate (107) one side, the inner chamber activity of installation section of thick bamboo (109) has cup jointed rotary rod (1010), rotary rod (1010) extend to the inner chamber of protection casing (105), its terminal fixedly connected with regulating block (1011), regulating block (1011) are square structure, when regulating block (1011) stiff end sets up towards protection casing (105) roof, the middle part department outer wall setting of its expansion end laminating installation hanger plate (107), and regulating block (1011) suspension in between fixed spring (106).

9. The adjustable steel brace cross brace structure for open cut foundation pit according to claim 8, wherein: when adjusting screw (96) is vertical setting, protection casing (105) suspension in adjusting screw (96) top helm steering top, regulating block (1011) promote installation hanger plate (107) tensile fixed spring (106), make gag lever post (108) of installation hanger plate (107) bottom peg graft in the spacing intracavity of the adjacent fixed rod piece of helm steering, and be provided with integrative extension plate (1015) on the lateral wall at U type fastener (101) both ends, even interval is provided with suspension rod (1016) on extension plate (1015) and U type fastener (101) lateral wall, suspension rod (1016) slope suspension side by side in the top of supporting screw (8).

10. The adjustable steel brace cross brace structure for open cut foundation pits according to claim 9, wherein: the tail end of the rotary rod (1010) extending to the inside of the protective cover (105) is fixedly connected with a connecting disc (1012), first supporting strips (1013) are arranged on the outer walls of two sides of one end of the connecting disc (1012), second supporting strips (1014) are arranged on the outer walls of two sides of the other end of the connecting disc (1012), the first supporting strips (1013) and the second supporting strips (1014) are arranged in a splayed mode, the length of the first supporting strips (1013) is larger than that of the second supporting strips (1014), and when the second supporting strips (1014) contact the outer wall of the installation hanging plate (107), the fixing springs (106) keep a normal relaxation state.

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