A foundation pit support device

Abstract

The present invention provides a foundation pit support device, which belongs to the technical field of foundation pit support; the foundation pit support device comprises: a base, a first mounting plate, a top plate, a first spring, a first moving mechanism, a first support plate, a second moving mechanism, a second support plate, a third moving mechanism, a third support plate, a fourth moving mechanism, a fourth support plate, a lifting mechanism, a lifting plate, a fastening nail, a clearance hole and an inner support mechanism; the lifting mechanism drives the lifting plate and the fastening nail to move downward, so that the fastening nail can pass through the clearance hole and be embedded in the bottom of the foundation pit, thereby fixing the product in the foundation pit to avoid displacement of the product in the foundation pit, thereby improving the stability of the product in supporting the side wall of the foundation pit.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit support, and in particular relates to a foundation pit support device. Background Art

[0002] In the related art, during the excavation of the foundation pit, in order to avoid the accident of collapse of the slope of the foundation pit and to ensure the stability of the foundation pit, the side wall of the foundation pit is usually supported by supporting steel plates.

[0003] The prior art (Chinese invention patent, authorization publication number: CN118241671B) proposes a support device for foundation pit construction, which is used to support the inner wall of the foundation pit, including a support plate, a support main pipe, a support branch pipe, a first moving part and a medium conveying part. The support plate abuts the inner wall of the foundation pit, the support main pipe is arranged in the foundation pit, the support branch pipe is connected to the end of the support main pipe, there are multiple support branches, the support main pipe and the support branch pipe are filled with pressure medium, the first moving part is slidably arranged in the support branch pipe, the first moving part abuts the support plate, the medium conveying part is arranged on the support main pipe or in the support main pipe, and the medium conveying part is a moving part, a swinging part or a rotating part, which is used to push the pressure medium to the first moving part. The problem of uneven supporting force of the inner wall support of the foundation pit is solved.

[0004] In the prior art, when the product is placed in the foundation pit, since the product is not fixed in the foundation pit, the product is prone to displacement in the foundation pit, thereby reducing the stability of the support for the side wall of the foundation pit. Summary of the invention

[0005] In order to solve the problem in the prior art that when the product is placed in the foundation pit, it is easy for the product to move in the foundation pit because the product is not fixed in the foundation pit, thereby reducing the stability of the support for the side wall of the foundation pit, the present invention provides a foundation pit support device, which uses a lifting mechanism to drive the lifting plate and the fastening nails to move downward, so that the fastening nails can pass through the clearance holes and embed into the bottom of the foundation pit, thereby fixing the product in the foundation pit to avoid displacement of the product in the foundation pit, thereby improving the effect of the product on the stability of the support for the side wall of the foundation pit. The specific technical solution is:

[0006] A foundation pit support device, the foundation pit support device includes: a base, a first mounting plate, a top plate, a first spring, a first moving mechanism, a first support plate, a second moving mechanism, a second support plate, a third moving mechanism, a third support plate, a fourth moving mechanism, a fourth support plate, a lifting mechanism, a lifting plate, a fastening nail, a clearance hole and an inner support mechanism; the base is a hollow cavity with an opening on the top; the first mounting plate is buckled at the opening of the base, and the first mounting plate is connected to the base; the top plate is located above the first mounting plate; one end of four first springs is connected to the first mounting plate, and the other ends of the four first springs are connected to the top plate; the first moving mechanism is installed on the first mounting plate; the first support plate is located on the outside of the first mounting plate, and the first support plate is connected to the first moving mechanism; the second moving mechanism is installed on the first mounting plate On, and the second moving mechanism is arranged opposite to the first moving mechanism; the second support plate is located on the outer side of the first mounting plate, and the second support plate is connected to the second moving mechanism; the third moving mechanism is installed on the first mounting plate; the third support plate is located on the outer side of the first mounting plate, and the third support plate is connected to the third moving mechanism; the fourth moving mechanism is installed on the first mounting plate, and the fourth moving mechanism is opposite to the third moving mechanism; the fourth support plate is located on the outer side of the first mounting plate, and the fourth support plate is connected to the fourth moving mechanism; two lifting mechanisms are installed in the base; two lifting plates are located in the base, and the two lifting plates are respectively connected to the two lifting mechanisms; the fastening nail is a hollow cavity, and the fastening nail is connected to the lifting plate; the clearance hole is set at the bottom of the base, and the clearance hole is opposite to the fastening nail; the inner support mechanism is installed in the fastening nail.

[0007] In addition, the foundation pit support device in the above technical solution provided by the present invention may also have the following additional technical features:

[0008] In the above technical scheme, the internal support mechanism includes: a first connecting plate, a first lead screw, an adjusting block, a slide groove, a first connecting rod, a second connecting plate, a clamping block, an internal support block and a second spring; the first connecting plate is embedded in the fastening nail, and the first connecting plate is connected to the inner wall of the fastening nail; a first external thread is provided on the outer wall of the first lead screw, one end of the first lead screw is rotatably connected to the first connecting plate, and the other end of the first lead screw is rotatably connected to the lifting plate; a first threaded hole is provided in the adjusting block, a first internal thread is provided in the first threaded hole, the adjusting block is located at the fastening nail, and the first lead screw passes through the first threaded hole of the adjusting block; the slide groove is provided on the inner wall of the fastening nail, and at least part of the adjusting block Embedded in the slide groove; one end of the two first connecting rods is connected to the adjusting block, and the two first connecting rods pass through the first connecting plate; the second connecting plate is connected to the other end of the two first connecting rods at the same time, and the second connecting plate is located below the first connecting plate; the two sides of the clamping block are inclined, and the clamping block is connected to the bottom of the second connecting plate; one side of the inner support block is inclined, and the two inner support blocks pass through the side walls of the fastening nails, and the inclined surfaces of the two inner support blocks fit with the inclined surfaces of the clamping block; the second spring is sleeved on the outside of the inner support block, one end of the second spring is connected to the inner wall of the fastening nail, and the other end of the second spring is connected to the inner support block; wherein the first external thread is adapted to the first internal thread.

[0009] In the above technical scheme, the internal support mechanism also includes: a first bearing seat, a first rotating shaft, a first bevel gear, a second bevel gear, a gear, a mounting frame and a rack; the first bearing seat is installed on the lifting plate; the first rotating shaft passes through the first bearing seat, the first rotating shaft is rotatably connected to the first bearing seat, and the first rotating shaft is perpendicular to the first lead screw; the first bevel gear is mounted on the outside of the first lead screw, and the first bevel gear is located above the lifting plate; the second bevel gear is mounted on the outside of one end of the first rotating shaft, and the second bevel gear is meshed with the first bevel gear; the gear is mounted on the outside of the other end of the first rotating shaft; the mounting frame is L-shaped, and the mounting frame is fixed to the bottom of the inner wall of the base; the rack is mounted on the mounting frame, and the rack is meshed with the gear.

[0010] In the above technical solution, the lifting mechanism includes: a second mounting plate, a second threaded hole and a second lead screw; the second mounting plate is connected to the inner wall of the base; a second internal thread is arranged in the second threaded hole, and the second threaded hole is arranged in the lifting plate; a second external thread is arranged on the outer wall of the second lead screw, one end of the second lead screw is rotatably connected to the second mounting plate, the other end of the second lead screw is rotatably connected to the bottom of the base, and the second lead screw passes through the second threaded hole; wherein the second internal thread is adapted to the second external thread.

[0011] In the above technical scheme, the foundation pit support device also includes: a second bearing seat, a second rotating shaft, a third bevel gear, a fourth bevel gear, a first motor, a first pulley, a second pulley and a belt; the two second bearing seats are installed at the bottom of the first mounting plate, and there is a spacing between the two second bearing seats; the second rotating shaft passes through the two second bearing seats in sequence, and the second rotating shaft is rotatably connected to the two second bearing seats at the same time; the two third bevel gears are respectively mounted on the two ends of the second rotating shaft; the two fourth bevel gears are respectively mounted on the outside of the two second lead screws, the fourth bevel gear is located above the second mounting plate, and the fourth bevel gear is meshed with the third bevel gear; the first motor is provided with a first output shaft, and the first motor is mounted on the first mounting plate; the first pulley is mounted on the outside of the first output shaft of the first motor; the second pulley is mounted on the outside of the second rotating shaft; the belt is simultaneously mounted on the outside of the first pulley and the second pulley.

[0012] In the above technical scheme, the first moving mechanism includes: a first fixed plate, a first movable plate, a third lead screw and a second connecting rod; the two first fixed plates are fixed on the first mounting plate, and there is a spacing between the two first fixed plates; two third threaded holes are arranged in the first movable plate, and a third internal thread is arranged in the third threaded hole, and the first movable plate is located between the two first fixed plates; a third external thread is arranged on the outer wall of the third lead screw, and the two ends of the two third lead screws are respectively rotatably connected to the two first fixed plates, and the two third lead screws pass through the two third threaded holes respectively; one end of the two second connecting rods is connected to the first movable plate, and the other end of the two second connecting rods is connected to the first support plate; wherein the third internal thread is adapted to the third external thread.

[0013] In the above technical scheme, the second movable mechanism includes: a second fixed plate, a second movable plate, a fourth lead screw and a third connecting rod; the two second fixed plates are fixed on the first mounting plate, and there is a spacing between the two second fixed plates; two fourth threaded holes are arranged in the second movable plate, and fourth internal threads are arranged in the fourth threaded holes, and the second movable plate is located between the two second fixed plates; a fourth external thread is arranged on the outer wall of the fourth lead screw, and the two ends of the two fourth lead screws are respectively rotatably connected to the two second fixed plates, and the two fourth lead screws respectively pass through the two fourth threaded holes; one end of the two third connecting rods is connected to the second movable plate, and the other end of the two third connecting rods is connected to the second support plate; wherein the fourth internal thread is adapted to the fourth external thread.

[0014] In the above technical scheme, the third movable mechanism includes: a third fixed plate, a third movable plate, a fifth lead screw and a fourth connecting rod; the two third fixed plates are fixed on the first mounting plate, and there is a spacing between the two third fixed plates; two fifth threaded holes are arranged in the third movable plate, and a fifth internal thread is arranged in the fifth threaded hole, and the third movable plate is located between the two third fixed plates; a fifth external thread is arranged on the outer wall of the fifth lead screw, and the two ends of the two fifth lead screws are respectively rotatably connected to the two third fixed plates, and the two fifth lead screws respectively pass through the two fifth threaded holes; one end of the two fourth connecting rods is connected to the third movable plate, and the other end of the two fourth connecting rods is connected to the third support plate; wherein the fifth internal thread is adapted to the fifth external thread.

[0015] In the above technical scheme, the fourth moving mechanism includes: a fourth fixed plate, a fourth movable plate, a sixth lead screw and a fifth connecting rod; the two fourth fixed plates are fixed on the first mounting plate, and there is a spacing between the two fourth fixed plates; two sixth threaded holes are arranged in the fourth movable plate, and the sixth threaded holes are arranged with sixth internal threads, and the fourth movable plate is located between the two fourth fixed plates; the sixth lead screw is arranged with a sixth external thread on the outer wall, and the two ends of the two sixth lead screws are respectively rotatably connected to the two fourth fixed plates, and the two sixth lead screws pass through the two sixth threaded holes respectively; one end of the two fifth connecting rods is connected to the fourth movable plate, and the other end of the two fifth connecting rods is connected to the fourth support plate; wherein the sixth internal thread is adapted to the sixth external thread.

[0016] In the above technical scheme, the foundation pit support device also includes: a first synchronous wheel, a first synchronous belt, a second synchronous wheel, a second synchronous belt, a third synchronous wheel, a third synchronous belt, a fourth synchronous wheel, a fourth synchronous belt, a fifth bevel gear, a sixth bevel gear, a seventh bevel gear, an eighth bevel gear and a second motor; the two first synchronous wheels are respectively mounted on the outside of the two third lead screws; the first synchronous belt is simultaneously mounted on the outside of the two first synchronous wheels; the two second synchronous wheels are respectively mounted on the outside of the two fourth lead screws; the second synchronous belt is simultaneously mounted on the outside of the two second synchronous wheels; the two third synchronous wheels are respectively mounted on the outside of the two fifth lead screws; the third synchronous belt is simultaneously mounted on the outside of the two third synchronous wheels; the two first The four synchronous wheels are respectively mounted on the outside of the two sixth lead screws; the fourth synchronous belt is simultaneously mounted on the outside of the two fourth synchronous wheels; the two fifth bevel gears are respectively mounted on the outside of the two third lead screws; the two sixth bevel gears are respectively mounted on the outside of the two fifth lead screws, and a sixth bevel gear is meshed with a fifth bevel gear; the seventh bevel gear is mounted on the outside of a fourth lead screw, and the seventh bevel gear is meshed with another sixth bevel gear; the eighth bevel gear is mounted on the outside of a sixth lead screw, and the eighth bevel gear is meshed with another fifth bevel gear; the second motor is provided with a second output shaft, the second motor is fixed on the first mounting plate, and the second output shaft of the second motor is connected to another fourth lead screw.

[0017] Compared with the prior art, the foundation pit support device of the present invention has the following beneficial effects:

[0018] 1. The lifting mechanism drives the lifting plate and the fastening nails to move downward, so that the fastening nails can pass through the clearance holes and embed into the bottom of the foundation pit, thereby fixing the product in the foundation pit to avoid displacement of the product in the foundation pit, thereby improving the stability of the product supporting the side walls of the foundation pit. Since the first mounting plate supports the top plate through the first spring, there is a holding space between the first mounting plate and the top plate, so that it is convenient to install the first moving mechanism, the second moving mechanism, the third moving mechanism and the fourth moving mechanism between the first mounting plate and the top plate; at the same time, it is also convenient for the staff to walk on the top plate to avoid the first moving mechanism, the second moving mechanism, the third moving mechanism and the fourth moving mechanism from interfering with the staff, so as to improve the user experience of the product.

[0019] 2. By setting the slide groove on the inner wall and embedding at least part of the adjustment block into the slide groove, the adjustment block can be moved along the slide groove, thereby avoiding the adjustment block from deflecting when moving up and down, so as to improve the stability of the adjustment block. By passing the two inner support blocks through the side wall of the fastening nail, and making the inclined surfaces of the two inner support blocks fit with the inclined surface of the pressing block, when the second connecting plate drives the pressing block to move downward, the pressing block presses the two inner support blocks to move to both sides, so that the inner support blocks extend from the fastening nail, so as to increase the area of ​​the fastening nail embedded in the bottom of the foundation pit, thereby improving the stability of the fastening nail. By sleeved the second spring on the outside of the inner support block, connecting one end of the second spring to the inner wall of the fastening nail, and connecting the other end of the second spring to the inner support block, the fastening nail can support the inner support block through the second spring, so that when the clamping block is separated from the inner support block, the second spring resets and drives the two inner support blocks to move inward, thereby enabling the two inner support blocks to be embedded in the fastening nail, so as to facilitate the fastening nail to be pulled out from the bottom of the foundation pit.

[0020] 3. When the lifting plate drives the first rotating shaft to move downward to the rack, the rack meshes with the gear; then, the lifting plate continues to move downward, so that the rack drives the gear and the first rotating shaft to rotate, and then the first rotating shaft drives the first lead screw to rotate through the first bevel gear and the second bevel gear, so as to provide power for rotating the first lead screw. By rotating the rack meshing gear and the first rotating shaft, and the first rotating shaft drives the first lead screw to rotate through the first bevel gear and the second bevel gear, it is possible to realize that the first drive device drives the first lead screw to rotate. At the same time, it is also possible to realize that the first lifting plate can drive the first lead screw to rotate only when it moves downward to a predetermined position, so as to ensure that when the fastening nail is embedded in the bottom of the foundation pit, the inner support block can extend out of the fastening nail, so as to reduce the difficulty of embedding the fastening nail in the bottom of the foundation pit, thereby improving the user experience of the product.

[0021] 4. By connecting the second mounting plate to the inner wall of the base, one end of the second lead screw is rotatably connected to the second mounting plate, and the other end of the second lead screw is rotatably connected to the bottom of the base, so that the base and the second mounting plate cooperate to support the second lead screw, so that the second lead screw can rotate in the base; by setting a second threaded hole in the lifting plate, and passing the second lead screw through the second threaded hole, so that the second lead screw is threadedly connected to the lifting plate, the second lead screw can be rotated, so that the second lead screw drives the lifting plate to move up and down.

[0022] 5. By respectively fitting the two third bevel gears on the two ends of the second shaft, respectively fitting the two fourth bevel gears on the outside of the two second lead screws, and meshing the fourth bevel gears with the third bevel gears, when the second shaft rotates, the second shaft drives the second lead screw to rotate through the third bevel gear and the fourth bevel gear, thereby providing power for rotating the second lead screw. By fitting the first pulley on the outside of the first output shaft of the first motor, fitting the second pulley on the outside of the second shaft, and fitting the belt on the outside of the first pulley and the second pulley at the same time, the first motor can drive the first pulley to rotate, thereby realizing that the first pulley drives the second shaft to rotate through the belt and the second pulley, thereby providing power for rotating the second shaft.

[0023] 6. By locating the first movable plate between the two first fixed plates and passing the two third lead screws through the two third threaded holes respectively, so as to realize threaded connection between the third lead screw and the first movable plate, the two third lead screws can be rotated at the same time, so that the two third lead screws drive the first movable plate to move; by connecting one end of the two second connecting rods to the first movable plate, and connecting the other ends of the two second connecting rods to the first support plate, so that the first movable plate can drive the first support plate to move through the two second connecting rods, so that the first support plate can fit with the inner wall of the foundation pit, and then the first support plate supports the foundation pit.

[0024] 7. By locating the second movable plate between the two second fixed plates and passing the two fourth lead screws through the two fourth threaded holes respectively, the fourth lead screws are threadedly connected to the second movable plate, thereby simultaneously rotating the two fourth lead screws, so that the two fourth lead screws drive the second movable plate to move; by connecting one end of the two third connecting rods to the second movable plate, and connecting the other ends of the two third connecting rods to the second support plate, so that the second movable plate can drive the second support plate to move through the two third connecting rods, thereby realizing that the second support plate can fit against the inner wall of the foundation pit, and then the second support plate supports the foundation pit.

[0025] 8. By locating the third movable plate between the two third fixed plates and passing the two fifth lead screws through the two fifth threaded holes respectively, the fifth lead screw is threadedly connected to the third movable plate, thereby realizing simultaneous rotation of the two fifth lead screws, so that the two fifth lead screws drive the third movable plate to move; by connecting one end of the two fourth connecting rods to the third movable plate, and connecting the other ends of the two fourth connecting rods to the third support plate, so that the third movable plate can drive the third support plate to move through the two fourth connecting rods, thereby realizing that the third support plate can fit against the inner wall of the foundation pit, and then the third support plate supports the foundation pit.

[0026] 9. By locating the fourth movable plate between the two fourth fixed plates and passing the two sixth lead screws through the two sixth threaded holes respectively, so as to realize threaded connection between the sixth lead screw and the fourth movable plate, the two sixth lead screws can be rotated at the same time, so that the two sixth lead screws drive the fourth movable plate to move; by connecting one end of the two fifth connecting rods to the fourth movable plate, and connecting the other ends of the two fifth connecting rods to the third support plate, so that the fourth movable plate can drive the third support plate to move through the two fifth connecting rods, so that the third support plate can fit with the inner wall of the foundation pit, and then the third support plate supports the foundation pit.

[0027] 10. First, start the second motor, so that the second motor drives another fourth lead screw to rotate, and the fourth lead screw rotates through two fourth synchronous wheels and a fourth synchronous belt, so that the two fourth lead screws rotate synchronously; when the two fourth lead screws rotate synchronously, one of the fourth lead screws drives the fifth lead screw to rotate through the seventh bevel gear and the sixth bevel gear; then, the fifth lead screw drives another fifth lead screw to rotate through two third synchronous wheels and the third synchronous belt, so that the two fifth lead screws rotate; when the two fifth lead screws rotate synchronously, one of the fifth lead screws drives a third lead screw to rotate through the sixth bevel gear and the fifth bevel gear; then, the third lead screw drives another third lead screw to rotate through two first synchronous wheels and the first synchronous belt, so that the two third lead screws rotate synchronously; when the two third lead screws rotate synchronously, one of the third lead screws drives the sixth lead screw to rotate through the fifth bevel gear and the eighth bevel gear, so that only one driving device is needed to make the two third lead screws, two fourth lead screws, two fifth lead screws and two sixth lead screws rotate synchronously, thereby reducing the production cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional view of a foundation pit supporting device of the present invention;

[0029] Figure 2 for Figure 1 A local enlarged view of point A;

[0030] Figure 3 for Figure 1 A partial enlarged view of point B;

[0031] Figure 4 for Figure 1 Cross-sectional view at CC;

[0032] Figure 5 for Figure 4 A partial enlarged view of point D;

[0033] Figure 6 for Figure 4 A local enlarged view of point E;

[0034] Figure 7 for Figure 4 A partial enlarged view of point F;

[0035] Figure 8 for Figure 4 A local enlarged view of point G;

[0036] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names in the figure is:

[0037] 10 base, 11 first mounting plate, 12 top plate, 13 first spring, 14 first moving mechanism, 141 first fixed plate, 142 first moving plate, 143 third lead screw, 144 second connecting rod, 15 first supporting plate, 16 second moving mechanism, 161 second fixed plate, 162 second moving plate, 163 fourth lead screw, 164 third connecting rod, 17 second supporting plate, 18 third moving mechanism, 181 third fixed plate, 182 third moving plate, 183 fifth lead screw, 184 fourth connecting rod, 19 third supporting plate, 20 fourth moving mechanism, 201 fourth fixed plate, 202 fourth moving plate, 203 sixth lead screw, 204 fifth connecting rod, 21 fourth supporting plate, 22 lifting mechanism, 221 second mounting plate, 222 second lead screw, 23 lifting plate, 24 fastening nail, 25 clearance hole, 26 inner support mechanism, 26 1 first connecting plate, 262 first lead screw, 263 adjusting block, 264 slide groove, 265 first connecting rod, 266 second connecting plate, 267 pressing block, 268 inner support block, 269 second spring, 270 first bearing seat, 271 first rotating shaft, 272 first bevel gear, 273 second bevel gear, 274 gear, 275 mounting frame, 276 rack, 28 second bearing seat, 29 second rotating shaft, 30 third bevel gear, 31 fourth bevel gear, 32 first motor, 33 first pulley, 34 second pulley, 35 belt, 36 first synchronous wheel, 37 first synchronous belt, 38 second synchronous wheel, 39 second synchronous belt, 40 third synchronous wheel, 41 third synchronous belt, 42 fourth synchronous wheel, 43 fourth synchronous belt, 44 fifth bevel gear, 45 sixth bevel gear, 46 seventh bevel gear, 47 eighth bevel gear, 48 second motor. DETAILED DESCRIPTION

[0038] The following is a combination of specific implementation cases and attached Figures 1 to 8 The present invention is further described below, but the present invention is not limited to these embodiments.

[0039] A foundation pit support device, such as Figures 1 to 4 As shown, the foundation pit support device includes: a base 10, a first mounting plate 11, a top plate 12, a first spring 13, a first moving mechanism 14, a first support plate 15, a second moving mechanism 16, a second support plate 17, a third moving mechanism 18, a third support plate 19, a fourth moving mechanism 20, a fourth support plate 21, a lifting mechanism 22, a lifting plate 23, a fastening nail 24, a clearance hole 25 and an inner support mechanism 26; the base 10 is a hollow cavity with an opening at the top; the first mounting plate 11 is buckled on the base The first mounting plate 10 is located at the opening of the first mounting plate 10, and the first mounting plate 11 is connected to the base 10; the top plate 12 is located above the first mounting plate 11; one end of the four first springs 13 is connected to the first mounting plate 11, and the other end of the four first springs 13 is connected to the top plate 12; the first moving mechanism 14 is installed on the first mounting plate 11; the first support plate 15 is located outside the first mounting plate 11, and the first support plate 15 is connected to the first moving mechanism 14; the second moving mechanism 16 is installed on the first mounting plate 11, The second moving mechanism 16 is arranged opposite to the first moving mechanism 14; the second supporting plate 17 is located on the outer side of the first mounting plate 11, and the second supporting plate 17 is connected to the second moving mechanism 16; the third moving mechanism 18 is installed on the first mounting plate 11; the third supporting plate 19 is located on the outer side of the first mounting plate 11, and the third supporting plate 19 is connected to the third moving mechanism 18; the fourth moving mechanism 20 is installed on the first mounting plate 11, and the fourth moving mechanism 20 is opposite to the third moving mechanism 18; the fourth supporting plate 21 is located on the outer side of the first mounting plate 11, and the fourth supporting plate 21 is connected to the fourth moving mechanism 20; two lifting mechanisms 22 are installed in the base 10; two lifting plates 23 are located in the base 10, and the two lifting plates 23 are respectively connected to the two lifting mechanisms 22; the fastening nail 24 is a hollow cavity, and the fastening nail 24 is connected to the lifting plate 23; the clearance hole 25 is arranged at the bottom of the base 10, and the clearance hole 25 is opposite to the fastening nail 24; the inner support mechanism 26 is installed in the fastening nail 24.

[0040] The first mounting plate 11 is buckled at the opening of the base 10 and connected to the base 10 by welding, so that the base 10 supports the first mounting plate 11, so that the first mounting plate 11 can close the opening of the base 10; one end of the four first springs 13 is connected to the first mounting plate 11, and the other end of the first spring 13 is connected to the top plate 12, so that the first mounting plate 11 supports the top plate 12 through the first springs 13, so that there is an accommodating space between the top plate 12 and the first mounting plate 11, and at the same time, it can also be achieved that the staff can step on the top plate 12 to facilitate the staff to move. By installing the first moving mechanism 14 on the first mounting plate 11, and connecting the first support plate 15 with the first moving mechanism 14, the first moving mechanism 14 can drive the first support plate 15 to move, so that the first support plate 15 is fitted with the inner wall of the foundation pit to support the inner wall of the foundation pit, thereby preventing the inner wall of the foundation pit from collapsing; by installing the second moving mechanism 16 on the first mounting plate 11, and connecting the second support plate 17 with the second moving mechanism 16, the second moving mechanism 16 can drive the second support plate 17 to move, so that the second support plate 17 is fitted with the inner wall of the foundation pit to support the inner wall of the foundation pit, thereby preventing the inner wall of the foundation pit from collapsing; By installing the third moving mechanism 18 on the first mounting plate 11 and connecting the third support plate 19 to the third moving mechanism 18, the third moving mechanism 18 can drive the third support plate 19 to move, so that the third support plate 19 is in contact with the inner wall of the foundation pit to support the inner wall of the foundation pit, thereby preventing the inner wall of the foundation pit from collapsing; by installing the fourth moving mechanism 20 on the first mounting plate 11 and connecting the fourth support plate 21 to the fourth moving mechanism 20, the fourth moving mechanism 20 can drive the fourth support plate 21 to move, so that the fourth support plate 21 is in contact with the inner wall of the foundation pit to support the inner wall of the foundation pit, thereby preventing the inner wall of the foundation pit from collapsing. By installing two lifting mechanisms 22 in the base 10 and connecting the two lifting plates 23 to the two lifting mechanisms 22 respectively, the lifting mechanism 22 can drive the lifting plate 23 to move up and down in the base 10, thereby adjusting the height of the lifting plate 23; by connecting the fastening nails 24 to the lifting plates 23, the clearance holes 25 are set at the bottom of the base 10, and the clearance holes 25 are opposite to the fastening nails 24, so that the lifting plates 23 can drive the fastening nails 24 to move up and down, so that the fastening nails 24 can pass through the clearance holes 25 and embed into the bottom of the foundation pit, so as to improve the stability of the product; by installing the inner support mechanism 26 in the fastening nails 24, when the fastening nails 24 are embedded in the bottom of the foundation pit, the inner support mechanism 26 is started, so that the inner support mechanism 26 extends out of the fastening nails 24, thereby increasing the area of ​​the fastening nails 24 embedded in the bottom of the foundation pit, thereby preventing the fastening nails 24 from detaching from the ground, and further improving the stability of the product.

[0041] When the product is used in practice, the product is first placed in the foundation pit by hoisting; then, the lifting mechanism 22 is started, so that the lifting mechanism 22 drives the lifting plate 23 and the fastening nail 24 to move downward, so that the fastening nail 24 passes through the clearance hole 25 and is embedded in the bottom of the foundation pit, so as to fix the product in the foundation pit, thereby improving the stability of the product; then, the first moving mechanism 14, the second moving mechanism 16, the third moving mechanism 18 and the fourth moving mechanism 20 are started at the same time, so that the first moving mechanism 14 drives the first support plate 15 to move, the second moving mechanism 16 drives the second support plate 17 to move, the third moving mechanism 18 drives the third support plate 19 to move, and the fourth moving mechanism 20 drives the fourth support plate 21 to move, so that the first support plate 15, the second support plate 17, the third support plate 19 and the fourth support plate 21 are respectively fitted with the four inner walls of the foundation pit, thereby supporting the inner wall of the foundation pit to improve the stability of the foundation pit.

[0042] With the above structure, the lifting mechanism 22 drives the lifting plate 23 and the fastening nail 24 to move downward, so that the fastening nail 24 can pass through the clearance hole 25 and embed into the bottom of the foundation pit, thereby fixing the product in the foundation pit to avoid displacement of the product in the foundation pit, thereby improving the stability of the product supporting the side wall of the foundation pit. Since the first mounting plate 11 supports the top plate 12 through the first spring 13, there is a accommodating space between the first mounting plate 11 and the top plate 12, so that it is convenient to install the first moving mechanism 14, the second moving mechanism 16, the third moving mechanism 18 and the fourth moving mechanism 20 between the first mounting plate 11 and the top plate 12; at the same time, it is also convenient for the staff to walk on the top plate 12 to avoid the first moving mechanism 14, the second moving mechanism 16, the third moving mechanism 18 and the fourth moving mechanism 20 from interfering with the staff, so as to improve the user experience of the product.

[0043] Specifically, the yield strength of the first spring 13 is high so that when a worker walks on the top plate 12 , the first spring 13 does not undergo elastic deformation.

[0044] In an embodiment of the present invention, Figure 2As shown, the inner support mechanism 26 includes: a first connecting plate 261, a first lead screw 262, an adjusting block 263, a slide groove 264, a first connecting rod 265, a second connecting plate 266, a clamping block 267, an inner support block 268 and a second spring 269; the first connecting plate 261 is embedded in the fastening nail 24, and the first connecting plate 261 is connected to the inner wall of the fastening nail 24; a first external thread is provided on the outer wall of the first lead screw 262, one end of the first lead screw 262 is rotatably connected to the first connecting plate 261, and the other end of the first lead screw 262 is rotatably connected to the lifting plate 23; a first threaded hole is provided in the adjusting block 263, a first internal thread is provided in the first threaded hole, the adjusting block 263 is located at the fastening nail 24, and the first lead screw 262 passes through the first threaded hole of the adjusting block 263; the slide groove 264 is provided on the inner wall of the fastening nail, and at least part of the adjusting block 263 Embedded in the slide groove 264; one end of the two first connecting rods 265 is connected to the adjusting block 263, and the two first connecting rods 265 pass through the first connecting plate 261; the second connecting plate 266 is connected to the other end of the two first connecting rods 265 at the same time, and the second connecting plate 266 is located below the first connecting plate 261; the two sides of the clamping block 267 are inclined, and the clamping block 267 is connected to the bottom of the second connecting plate 266; one side of the inner support block 268 is inclined, and the two inner support blocks 268 pass through the side wall of the fastening nail 24, and the inclined surfaces of the two inner support blocks 268 fit the inclined surfaces of the clamping block 267; the second spring 269 is sleeved on the outside of the inner support block 268, one end of the second spring 269 is connected to the inner wall of the fastening nail 24, and the other end of the second spring 269 is connected to the inner support block 268; wherein, the first external thread is adapted to the first internal thread.

[0045] By embedding the first connecting plate 261 into the fastening nail 24 and connecting the first connecting plate 261 to the inner wall of the fastening nail 24, the fastening nail 24 can support the first connecting plate 261, thereby improving the stability of the first connecting plate 261; by rotatably connecting one end of the first lead screw 262 to the first connecting plate 261, and rotatably connecting the other end of the first lead screw 262 to the lifting plate 23, the lifting plate 23 and the first connecting plate 261 cooperate to support the first lead screw 262, thereby enabling the first lead screw 262 to rotate in the fastening nail 24; by adjusting The block 263 is located in the fastening nail 24, and the first lead screw 262 passes through the first threaded hole of the adjusting block 263 to realize the threaded connection between the first lead screw 262 and the adjusting block 263, so that when the first lead screw 262 rotates, the first lead screw 262 can drive the adjusting block 263 to move up and down in the fastening nail 24; by setting the slide groove 264 on the inner wall, and embedding at least part of the adjusting block 263 into the slide groove 264, so that the adjusting block 263 can move along the slide groove 264, thereby avoiding the adjustment block 263 from deviating when moving up and down, so as to improve the stability of the adjustment block 263. By connecting one end of the two first connecting rods 265 to the adjusting block 263, the two first connecting rods 265 pass through the first connecting plate 261, and the second connecting plate 266 is connected to the other ends of the two first connecting rods 265, so that when the adjusting block 263 moves up and down, the adjusting block 263 drives the second connecting plate 266 to move up and down through the two first connecting rods 265; by connecting the pressing block 267 to the bottom of the second connecting plate 266, the pressing block 267 and the first connecting plate 266 are connected. The two connecting plates 266 move up and down synchronously; by passing the two inner support blocks 268 through the side walls of the fastening nail 24, and making the inclined surfaces of the two inner support blocks 268 fit with the inclined surfaces of the clamping block 267, when the second connecting plate 266 drives the clamping block 267 to move downward, the clamping block 267 presses the two inner support blocks 268 to move to both sides, so that the inner support blocks 268 extend from the fastening nail 24 to increase the area of ​​the fastening nail 24 embedded in the bottom of the foundation pit, thereby improving the stability of the fastening nail 24. By putting the second spring 269 on the outside of the inner support block 268, connecting one end of the second spring 269 to the inner wall of the fastening nail 24, and connecting the other end of the second spring 269 to the inner support block 268, the fastening nail 24 can support the inner support block 268 through the second spring 269, so that when the clamping block 267 is disengaged from the inner support block 268, the second spring 269 is reset and drives the two inner support blocks 268 to move inward, thereby enabling the two inner support blocks 268 to be embedded in the fastening nail 24, so as to facilitate the fastening nail 24 to be pulled out from the bottom of the foundation pit.

[0046] In an embodiment of the present invention, Figure 2As shown, the inner support mechanism 26 also includes: a first bearing seat 270, a first rotating shaft 271, a first bevel gear 272, a second bevel gear 273, a gear 274, a mounting frame 275 and a rack 276; the first bearing seat 270 is installed on the lifting plate 23; the first rotating shaft 271 passes through the first bearing seat 270, the first rotating shaft 271 is rotatably connected to the first bearing seat 270, and the first rotating shaft 271 is perpendicular to the first lead screw 262; the first bevel gear 272 is sleeved on the first lead screw The outer side of the lever 262, and the first bevel gear 272 is located above the lifting plate 23; the second bevel gear 273 is mounted on the outer side of one end of the first rotating shaft 271, and the second bevel gear 273 is meshed with the first bevel gear 272; the gear 274 is mounted on the outer side of the other end of the first rotating shaft 271; the mounting frame 275 is L-shaped, and the mounting frame 275 is fixed to the bottom of the inner wall of the base 10; the rack 276 is mounted on the mounting frame 275, and the rack 276 is meshed with the gear 274.

[0047] By installing the first bearing seat 270 on the lifting plate 23, the lifting plate 23 can drive the first bearing seat 270 to move up and down; by passing the first rotating shaft 271 through the first bearing seat 270 and making the first rotating shaft 271 rotatably connected to the first bearing seat 270, the first bearing seat 270 can support the first rotating shaft 271, so that the first rotating shaft 271 can rotate in the first bearing seat 270; by sleeved the first bevel gear 272 on the outside of the first lead screw 262, sleeved the second bevel gear 273 on the outside of one end of the first rotating shaft 271, and made the second bevel gear 273 mesh with the first bevel gear 272, when the first rotating shaft 271 rotates, the first rotating shaft 271 drives the first lead screw 262 to rotate through the second bevel gear 273 and the first bevel gear 272, thereby providing power for rotating the first lead screw 262. By installing the gear 274 on the outer side of the other end of the first rotating shaft 271, fixing the L-shaped mounting frame 275 on the bottom of the inner wall of the base 10, installing the rack 276 on the mounting frame 275, and making the rack 276 mesh with the gear 274, the mounting frame 275 can support the rack 276, so that when the lifting plate 23 drives the first bearing seat 270 and the first rotating shaft 271 to move to the rack 276, the gear 274 can mesh with the rack 276, thereby driving the first rotating shaft 271 to rotate, and the first rotating shaft 271 drives the first screw 262 to rotate.

[0048] With the above structure, when the lifting plate 23 drives the first rotating shaft 271 to move downward to the rack 276, the rack 276 engages with the gear 274; then, the lifting plate 23 continues to move downward, so that the rack 276 drives the gear 274 and the first rotating shaft 271 to rotate, and then the first rotating shaft 271 drives the first screw 262 to rotate through the first bevel gear 272 and the second bevel gear 273, so as to provide power for rotating the first screw 262. By making the rack 276 mesh with the gear 274 and the first rotating shaft 271 to rotate, and making the first rotating shaft 271 drive the first lead screw 262 to rotate through the first bevel gear 272 and the second bevel gear 273, it is possible to realize that another driving device drives the first lead screw 262 to rotate. At the same time, it is also possible to realize that when the first lifting plate 23 moves downward to a predetermined position, the first lead screw 262 can be driven to rotate, so as to ensure that when the fastening nail 24 is embedded in the bottom of the foundation pit, the inner support block 268 can extend out of the fastening nail 24, so as to reduce the difficulty of embedding the fastening nail 24 in the bottom of the foundation pit, thereby improving the product usage experience.

[0049] In an embodiment of the present invention, Figure 2 As shown, the lifting mechanism 22 includes: a second mounting plate 221, a second threaded hole and a second lead screw 222; the second mounting plate 221 is connected to the inner wall of the base 10; a second internal thread is arranged in the second threaded hole, and the second threaded hole is arranged in the lifting plate 23; a second external thread is arranged on the outer wall of the second lead screw 222, one end of the second lead screw 222 is rotatably connected to the second mounting plate 221, and the other end of the second lead screw 222 is rotatably connected to the bottom of the base 10, and the second lead screw 222 passes through the second threaded hole; wherein, the second internal thread is adapted to the second external thread.

[0050] By connecting the second mounting plate 221 to the inner wall of the base 10, one end of the second lead screw 222 is rotatably connected to the second mounting plate 221, and the other end of the second lead screw 222 is rotatably connected to the bottom of the base 10, so that the base 10 and the second mounting plate 221 cooperate to support the second lead screw 222, so that the second lead screw 222 can rotate in the base 10; by setting a second threaded hole in the lifting plate 23, and passing the second lead screw 222 through the second threaded hole, so that the second lead screw 222 is threadedly connected to the lifting plate 23, the second lead screw 222 is rotated, so that the second lead screw 222 drives the lifting plate 23 to move up and down.

[0051] In an embodiment of the present invention, Figure 2 and Figure 3As shown, the foundation pit support device also includes: a second bearing seat 28, a second rotating shaft 29, a third bevel gear 30, a fourth bevel gear 31, a first motor 32, a first pulley 33, a second pulley 34 and a belt 35; the two second bearing seats 28 are installed at the bottom of the first mounting plate 11, and there is a gap between the two second bearing seats 28; the second rotating shaft 29 passes through the two second bearing seats 28 in sequence, and the second rotating shaft 29 is rotatably connected to the two second bearing seats 28 at the same time; the two third bevel gears 30 are respectively mounted on the two second rotating shafts 29 Two ends; two fourth bevel gears 31 are respectively mounted on the outside of the two second lead screws 222, the fourth bevel gear 31 is located above the second mounting plate 221, and the fourth bevel gear 31 is meshed with the third bevel gear 30; the first motor 32 is provided with a first output shaft, and the first motor 32 is mounted on the first mounting plate 11; the first pulley 33 is mounted on the outside of the first output shaft of the first motor 32; the second pulley 34 is mounted on the outside of the second rotating shaft 29; the belt 35 is simultaneously mounted on the outside of the first pulley 33 and the second pulley 34.

[0052] By installing the two second bearing seats 28 on the bottom of the first mounting plate 11, the second rotating shaft 29 passes through the two second bearing seats 28 in sequence, and the second rotating shaft 29 is rotatably connected to the two second bearing seats 28 at the same time, so that the two second bearing seats 28 support the second rotating shaft 29, so that the second rotating shaft 29 can rotate in the two second bearing seats 28; by respectively sleeved the two third bevel gears 30 on the two ends of the second rotating shaft 29, the two fourth bevel gears 31 are respectively sleeved on the outside of the two second lead screws 222, and the fourth bevel gear 31 is meshed with the third bevel gear 30, so that when the second rotating shaft 29 rotates, the second rotating shaft 29 drives the second lead screw 222 to rotate through the third bevel gear 30 and the fourth bevel gear 31, thereby providing power for rotating the second lead screw 222. By installing the first motor 32 on the first mounting plate 11, the first mounting plate 11 can support the first motor 32, thereby improving the stability of the first motor 32; by sleeved the first pulley 33 on the outside of the first output shaft of the first motor 32, sleeved the second pulley 34 on the outside of the second rotating shaft 29, and sleeved the belt 35 on the outside of the first pulley 33 and the second pulley 34 at the same time, the first motor 32 can drive the first pulley 33 to rotate, so that the first pulley 33 drives the second rotating shaft 29 to rotate through the belt 35 and the second pulley 34, thereby providing power for rotating the second rotating shaft 29.

[0053] In an embodiment of the present invention, Figure 5As shown, the first moving mechanism 14 includes: a first fixed plate 141, a first movable plate 142, a third lead screw 143 and a second connecting rod 144; the two first fixed plates 141 are fixed on the first mounting plate 11, and there is a spacing between the two first fixed plates 141; two third threaded holes are arranged in the first movable plate 142, and a third internal thread is arranged in the third threaded hole, and the first movable plate 142 is located between the two first fixed plates 141; a third external thread is arranged on the outer wall of the third lead screw 143, and the two ends of the two third lead screws 143 are respectively rotatably connected to the two first fixed plates 141, and the two third lead screws 143 pass through the two third threaded holes respectively; one end of the two second connecting rods 144 is connected to the first movable plate 142, and the other end of the two second connecting rods 144 is connected to the first support plate 15; wherein the third internal thread is adapted to the third external thread.

[0054] By fixing the two first fixing plates 141 on the first mounting plate 11, the two ends of the two third lead screws 143 are rotatably connected to the two first fixing plates 141 respectively, so that the two first fixing plates 141 cooperate to support the two third lead screws 143, so that the two third lead screws 143 can rotate between the two first fixing plates 141; by locating the first movable plate 142 between the two first fixing plates 141, and making the two third lead screws 143 pass through the two third threaded holes respectively, so that the third lead screws 143 and the first movable plate 1 42 threaded connection, so as to realize simultaneous rotation of the two third lead screws 143, so that the two third lead screws 143 drive the first movable plate 142 to move; by connecting one end of the two second connecting rods 144 to the first movable plate 142, and connecting the other ends of the two second connecting rods 144 to the first support plate 15, so that the first movable plate 142 can drive the first support plate 15 to move through the two second connecting rods 144, so that the first support plate 15 can fit with the inner wall of the foundation pit, and then the first support plate 15 supports the foundation pit.

[0055] In an embodiment of the present invention, Figure 6As shown, the second moving mechanism 16 includes: a second fixed plate 161, a second moving plate 162, a fourth lead screw 163 and a third connecting rod 164; the two second fixed plates 161 are fixed on the first mounting plate 11, and there is a spacing between the two second fixed plates 161; two fourth threaded holes are arranged in the second moving plate 162, and fourth internal threads are arranged in the fourth threaded holes, and the second moving plate 162 is located between the two second fixed plates 161; a fourth external thread is arranged on the outer wall of the fourth lead screw 163, and the two ends of the two fourth lead screws 163 are respectively rotatably connected to the two second fixed plates 161, and the two fourth lead screws 163 pass through the two fourth threaded holes respectively; one end of the two third connecting rods 164 is connected to the second moving plate 162, and the other end of the two third connecting rods 164 is connected to the second support plate 17; wherein the fourth internal thread is adapted to the fourth external thread.

[0056] By fixing the two second fixing plates 161 on the first mounting plate 11, the two ends of the two fourth lead screws 163 are rotatably connected to the two second fixing plates 161 respectively, so that the two second fixing plates 161 cooperate to support the two fourth lead screws 163, so that the two fourth lead screws 163 can rotate between the two second fixing plates 161; by locating the second movable plate 162 between the two second fixing plates 161, and making the two fourth lead screws 163 pass through the two fourth threaded holes respectively, so that the fourth lead screw 163 and the second movable plate 1 62 threaded connection, so as to realize the simultaneous rotation of the two fourth lead screws 163, so that the two fourth lead screws 163 drive the second movable plate 162 to move; by connecting one end of the two third connecting rods 164 to the second movable plate 162, and connecting the other ends of the two third connecting rods 164 to the second support plate 17, so that the second movable plate 162 can drive the second support plate 17 to move through the two third connecting rods 164, so that the second support plate 17 can fit with the inner wall of the foundation pit, and then the second support plate 17 supports the foundation pit.

[0057] In an embodiment of the present invention, Figure 4As shown, the third moving mechanism 18 includes: a third fixed plate 181, a third movable plate 182, a fifth lead screw 183 and a fourth connecting rod 184; the two third fixed plates 181 are fixed on the first mounting plate 11, and there is a spacing between the two third fixed plates 181; two fifth threaded holes are arranged in the third movable plate 182, and a fifth internal thread is arranged in the fifth threaded hole, and the third movable plate 182 is located between the two third fixed plates 181; a fifth external thread is arranged on the outer wall of the fifth lead screw 183, and the two ends of the two fifth lead screws 183 are respectively rotatably connected to the two third fixed plates 181, and the two fifth lead screws 183 pass through the two fifth threaded holes respectively; one end of the two fourth connecting rods 184 is connected to the third movable plate 182, and the other end of the two fourth connecting rods 184 is connected to the third support plate 19; wherein the fifth internal thread is adapted to the fifth external thread.

[0058] By fixing the two third fixing plates 181 on the first mounting plate 11, the two ends of the two fifth lead screws 183 are rotatably connected to the two third fixing plates 181 respectively, so that the two third fixing plates 181 cooperate to support the two fifth lead screws 183, so that the two fifth lead screws 183 can rotate between the two third fixing plates 181; by locating the third movable plate 182 between the two third fixing plates 181, and making the two fifth lead screws 183 pass through the two fifth threaded holes respectively, so that the fifth lead screw 183 and the third movable plate 1 82 threaded connection, so as to realize the simultaneous rotation of the two fifth lead screws 183, so that the two fifth lead screws 183 drive the third movable plate 182 to move; by connecting one end of the two fourth connecting rods 184 to the third movable plate 182, and connecting the other ends of the two fourth connecting rods 184 to the third support plate 19, so that the third movable plate 182 can drive the third support plate 19 to move through the two fourth connecting rods 184, so that the third support plate 19 can fit with the inner wall of the foundation pit, and then the third support plate 19 supports the foundation pit.

[0059] In an embodiment of the present invention, Figure 4As shown, the fourth moving mechanism 20 includes: a fourth fixed plate 201, a fourth moving plate 202, a sixth lead screw 203 and a fifth connecting rod 204; the two fourth fixed plates 201 are fixed on the first mounting plate 11, and there is a spacing between the two fourth fixed plates 201; two sixth threaded holes are arranged in the fourth moving plate 202, and the sixth threaded holes are arranged with sixth internal threads, and the fourth moving plate 202 is located between the two fourth fixed plates 201; a sixth external thread is arranged on the outer wall of the sixth lead screw 203, and the two ends of the two sixth lead screws 203 are respectively rotatably connected to the two fourth fixed plates 201, and the two sixth lead screws 203 pass through the two sixth threaded holes respectively; one end of the two fifth connecting rods 204 is connected to the fourth moving plate 202, and the other end of the two fifth connecting rods 204 is connected to the fourth support plate 21; wherein, the sixth internal thread is adapted to the sixth external thread.

[0060] By fixing the two fourth fixing plates 201 on the first mounting plate 11, the two ends of the two sixth lead screws 203 are rotatably connected to the two fourth fixing plates 201 respectively, so that the two fourth fixing plates 201 cooperate to support the two sixth lead screws 203, so that the two sixth lead screws 203 can rotate between the two fourth fixing plates 201; by locating the fourth movable plate 202 between the two fourth fixing plates 201, and making the two sixth lead screws 203 pass through the two sixth threaded holes respectively, so that the sixth lead screw 203 and the fourth movable plate 2 02 threaded connection, so as to realize the simultaneous rotation of the two sixth lead screws 203, so that the two sixth lead screws 203 drive the fourth movable plate 202 to move; by connecting one end of the two fifth connecting rods 204 to the fourth movable plate 202, and connecting the other ends of the two fifth connecting rods 204 to the third support plate 19, so that the fourth movable plate 202 can drive the third support plate 19 to move through the two fifth connecting rods 204, so that the third support plate 19 can fit with the inner wall of the foundation pit, and then the third support plate 19 supports the foundation pit.

[0061] In an embodiment of the present invention, Figures 5 to 8As shown, the foundation pit support device also includes: a first synchronous wheel 36, a first synchronous belt 37, a second synchronous wheel 38, a second synchronous belt 39, a third synchronous wheel 40, a third synchronous belt 41, a fourth synchronous wheel 42, a fourth synchronous belt 43, a fifth bevel gear 44, a sixth bevel gear 45, a seventh bevel gear 46, an eighth bevel gear 47 and a second motor 48; the two first synchronous wheels 36 are respectively mounted on the outside of the two third lead screws 143; the first synchronous belt 37 is simultaneously mounted on the outside of the two first synchronous wheels 36; the two second synchronous wheels 38 are respectively mounted on the outside of the two fourth lead screws 163; the second synchronous belt 39 is simultaneously mounted on the outside of the two second synchronous wheels 38; the two third synchronous wheels 40 are respectively mounted on the outside of the two fifth lead screws 183; the third synchronous belt 41 is simultaneously mounted on the outside of the two third synchronous wheels 40; the two fourth synchronous wheels The step wheels 42 are respectively mounted on the outer sides of the two sixth lead screws 203; the fourth synchronous belt 43 is simultaneously mounted on the outer sides of the two fourth synchronous wheels 42; the two fifth bevel gears 44 are respectively mounted on the outer sides of the two third lead screws 143; the two sixth bevel gears 45 are respectively mounted on the outer sides of the two fifth lead screws 183, and one sixth bevel gear 45 is meshed with one fifth bevel gear 44; the seventh bevel gear 46 is mounted on the outer side of a fourth lead screw 163, and the seventh bevel gear 46 is meshed with another sixth bevel gear 45; the eighth bevel gear 47 is mounted on the outer side of a sixth lead screw 203, and the eighth bevel gear 47 is meshed with another fifth bevel gear 44; the second motor 48 is provided with a second output shaft, the second motor 48 is fixed on the first mounting plate 11, and the second output shaft of the second motor 48 is connected to another fourth lead screw 163.

[0062] By respectively fitting the two first synchronous wheels 36 on the outside of the two third lead screws 143, and simultaneously fitting the first synchronous belt 37 on the outside of the two first synchronous wheels 36, it is realized that when one third lead screw 143 rotates, the third lead screw 143 drives the other third lead screw 143 to rotate through the two first synchronous wheels 36 and the first synchronous belt 37, thereby realizing synchronous rotation of the two third lead screws 143; by respectively fitting the two second synchronous wheels 38 on the outside of the two fourth lead screws 163, and simultaneously fitting the second synchronous belt 39 on the outside of the two second synchronous wheels 38, it is realized that when the fourth lead screw 163 rotates, the fourth lead screw 163 drives the other fourth lead screw 163 to rotate through the two second synchronous wheels 38 and the second synchronous belt 39, thereby realizing synchronous rotation of the two fourth lead screws 163 ; By respectively sleeveing ​​the two third synchronous wheels 40 on the outside of the two fifth lead screws 183, and sleeved the third synchronous belt 41 on the outside of the two third synchronous wheels 40 at the same time, it is realized that when the fifth lead screw 183 rotates, the fifth lead screw 183 drives the other fifth lead screw 183 to rotate through the two third synchronous wheels 40 and the third synchronous belt 41, thereby realizing synchronous rotation of the two fifth lead screws 183; by respectively sleeveing ​​the two fourth synchronous wheels 42 on the outside of the two sixth lead screws 203, and sleeved the fourth synchronous belt 43 on the outside of the two fourth synchronous wheels 42 at the same time, it is realized that when the sixth lead screw 203 rotates, the sixth lead screw 203 drives the other sixth lead screw 203 to rotate through the two fourth synchronous wheels 42 and the fourth synchronous belt 43, thereby realizing synchronous rotation of the two sixth lead screws 203. By respectively sleeveing ​​the two fifth bevel gears 44 on the outside of the two third lead screws 143, and respectively sleeveing ​​the two sixth bevel gears 45 on the outside of the fifth lead screw 183, the fifth bevel gear 44 and the third lead screw 143 can rotate synchronously, and the sixth bevel gear 45 and the fifth lead screw 183 can rotate synchronously; by fixing the second motor 48 on the first mounting plate 11, and connecting the second output shaft of the second motor 48 to another fourth lead screw 163, the second motor 48 can drive the fourth lead screw 163 to rotate, thereby providing power for rotating the fourth lead screw 163.

[0063] With the above structure, the second motor 48 is started first, so that the second motor 48 drives the other fourth lead screw 163 to rotate, and the fourth lead screw 163 rotates through two fourth synchronous wheels 42 and the fourth synchronous belt 43, so that the two fourth lead screws 163 rotate synchronously; when the two fourth lead screws 163 rotate synchronously, one of the fourth lead screws 163 drives the fifth lead screw 183 to rotate through the seventh bevel gear 46 and the sixth bevel gear 45; then, the fifth lead screw 183 drives the other fifth lead screw 183 to rotate through two third synchronous wheels 40 and the third synchronous belt 41, so that the two fifth lead screws 183 rotate; when the two fifth lead screws 183 rotate synchronously, One of the fifth lead screws 183 drives a third lead screw 143 to rotate through the sixth bevel gear 45 and the fifth bevel gear 44; then, the third lead screw 143 drives another third lead screw 143 to rotate through the two first synchronous wheels 36 and the first synchronous belt 37, so that the two third lead screws 143 rotate synchronously; when the two third lead screws 143 rotate synchronously, one of the third lead screws 143 drives the sixth lead screw 203 to rotate through the fifth bevel gear 44 and the eighth bevel gear, so that only one driving device is needed to make the two third lead screws 143, the two fourth lead screws 163, the two fifth lead screws 183 and the two sixth lead screws 203 rotate synchronously, thereby reducing the production cost of the product.

[0064] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the description of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A foundation pit support device, characterized in that: The foundation pit supporting device comprises: A base, wherein the base is a hollow cavity with an opening at the top; A first mounting plate, wherein the first mounting plate is buckled at the opening of the base and connected to the base; A top plate, the top plate being located above the first mounting plate; First springs, one end of four first springs is connected to the first mounting plate, and the other end of the four first springs is connected to the top plate; a first moving mechanism, the first moving mechanism being mounted on the first mounting plate; A first support plate, the first support plate is located outside the first mounting plate, and the first support plate is connected to the first moving mechanism; a second moving mechanism, the second moving mechanism being mounted on the first mounting plate and arranged opposite to the first moving mechanism; a second supporting plate, the second supporting plate being located outside the first mounting plate and connected to the second moving mechanism; a third moving mechanism, the third moving mechanism being mounted on the first mounting plate; a third supporting plate, the third supporting plate being located outside the first mounting plate and connected to the third moving mechanism; a fourth moving mechanism, the fourth moving mechanism being mounted on the first mounting plate and opposite to the third moving mechanism; a fourth support plate, the fourth support plate being located outside the first mounting plate and connected to the fourth moving mechanism; A lifting mechanism, two of which are installed in the base; Lifting plates, two of which are located in the base, and the two of which are connected to the two lifting mechanisms respectively; A fastening nail, wherein the fastening nail is a hollow cavity and is connected to the lifting plate; A clearance hole, which is arranged at the bottom of the base and is opposite to the fastening nail; An internal support mechanism, the internal support mechanism is installed in the fastening nail; The first moving mechanism comprises: A first fixing plate, wherein two of the first fixing plates are fixed on the first mounting plate, and a distance is provided between the two first fixing plates; A first movable plate, wherein two third threaded holes are arranged in the first movable plate, and third internal threads are arranged in the third threaded holes, and the first movable plate is located between the two first fixed plates; A third lead screw, wherein a third external thread is arranged on an outer wall of the third lead screw, two ends of the two third lead screws are rotatably connected to the two first fixing plates respectively, and the two third lead screws pass through the two third threaded holes respectively; second connecting rods, one end of two of the second connecting rods being connected to the first movable plate, and the other ends of the two of the second connecting rods being connected to the first supporting plate; The third internal thread is adapted to the third external thread; The second moving mechanism comprises: A second fixing plate, wherein two of the second fixing plates are fixed on the first mounting plate, and a distance is provided between the two second fixing plates; a second movable plate, wherein two fourth threaded holes are arranged in the second movable plate, fourth internal threads are arranged in the fourth threaded holes, and the second movable plate is located between the two second fixed plates; A fourth lead screw, wherein a fourth external thread is arranged on an outer wall of the fourth lead screw, two ends of the two fourth lead screws are rotatably connected to the two second fixing plates respectively, and the two fourth lead screws pass through the two fourth threaded holes respectively; A third connecting rod, one end of two of the third connecting rods is connected to the second movable plate, and the other end of the two of the third connecting rods is connected to the second supporting plate; The fourth internal thread is adapted to the fourth external thread; The third moving mechanism comprises: A third fixing plate, wherein two third fixing plates are fixed on the first mounting plate, and there is a distance between the two third fixing plates; A third movable plate, wherein two fifth threaded holes are arranged in the third movable plate, and fifth internal threads are arranged in the fifth threaded holes, and the third movable plate is located between the two third fixed plates; A fifth lead screw, wherein a fifth external thread is arranged on an outer wall of the fifth lead screw, two ends of the two fifth lead screws are rotatably connected to the two third fixing plates respectively, and the two fifth lead screws pass through the two fifth threaded holes respectively; Fourth connecting rods, one end of two of the fourth connecting rods is connected to the third movable plate, and the other end of the two of the fourth connecting rods is connected to the third supporting plate; The fifth internal thread is adapted to the fifth external thread; The fourth moving mechanism comprises: A fourth fixing plate, wherein two of the fourth fixing plates are fixed on the first mounting plate, and there is a distance between the two fourth fixing plates; A fourth movable plate, wherein two sixth threaded holes are arranged in the fourth movable plate, and sixth internal threads are arranged in the sixth threaded holes, and the fourth movable plate is located between the two fourth fixed plates; A sixth lead screw, wherein the outer wall of the sixth lead screw is provided with a sixth external thread, the two ends of the two sixth lead screws are rotatably connected to the two fourth fixing plates respectively, and the two sixth lead screws pass through the two sixth threaded holes respectively; fifth connecting rods, one end of two of the fifth connecting rods being connected to the fourth movable plate, and the other ends of the two of the fifth connecting rods being connected to the fourth supporting plate; The sixth internal thread is adapted to the sixth external thread; A first synchronous wheel, wherein two of the first synchronous wheels are respectively sleeved on the outer sides of the two third lead screws; A first synchronous belt, wherein the first synchronous belt is simultaneously sleeved on the outer sides of the two first synchronous wheels; A second synchronous wheel, wherein two of the second synchronous wheels are respectively sleeved on the outer sides of the two fourth lead screws; A second synchronous belt, wherein the second synchronous belt is simultaneously sleeved on the outer sides of the two second synchronous wheels; A third synchronous wheel, wherein two third synchronous wheels are respectively sleeved on the outer sides of the two fifth lead screws; A third synchronous belt, wherein the third synchronous belt is simultaneously sleeved on the outer sides of the two third synchronous wheels; A fourth synchronous wheel, wherein two fourth synchronous wheels are respectively sleeved on the outer sides of the two sixth lead screws; A fourth synchronous belt, wherein the fourth synchronous belt is simultaneously sleeved on the outer sides of the two fourth synchronous wheels; A fifth bevel gear, wherein two fifth bevel gears are respectively sleeved on the outer sides of the two third lead screws; A sixth bevel gear, wherein two sixth bevel gears are respectively mounted on the outsides of the two fifth lead screws, and one sixth bevel gear is meshed with one fifth bevel gear; A seventh bevel gear, wherein the seventh bevel gear is sleeved on the outside of one of the fourth lead screws and meshes with another of the sixth bevel gears; An eighth bevel gear, wherein the eighth bevel gear is sleeved on the outside of one of the sixth lead screws and meshes with another of the fifth bevel gears; The second motor is provided with a second output shaft, the second motor is fixed on the first mounting plate, and the second output shaft of the second motor is connected to another fourth lead screw.

2. A foundation pit support device according to claim 1, characterized in that: The inner support mechanism comprises: A first connecting plate, wherein the first connecting plate is embedded in the fastening nail and connected to an inner wall of the fastening nail; A first lead screw, wherein a first external thread is disposed on an outer wall of the first lead screw, one end of the first lead screw is rotatably connected to the first connecting plate, and the other end of the first lead screw is rotatably connected to the lifting plate; An adjusting block, wherein a first threaded hole is provided in the adjusting block, a first internal thread is provided in the first threaded hole, the adjusting block is located on the fastening nail, and the first lead screw passes through the first threaded hole of the adjusting block; A slide groove, wherein the slide groove is arranged on the inner wall of the fastening nail, and at least a part of the adjustment block is embedded in the slide groove; first connecting rods, one end of two of the first connecting rods being connected to the adjusting block, and the two of the first connecting rods passing through the first connecting plate; A second connecting plate, the second connecting plate being connected to the other ends of the two first connecting rods at the same time, and the second connecting plate being located below the first connecting plate; A pressing block, both sides of which are inclined, and the pressing block is connected to the bottom of the second connecting plate; An inner support block, one side of which is an inclined surface, two of the inner support blocks pass through the side walls of the fastening nails, and the inclined surfaces of the two inner support blocks are in contact with the inclined surface of the pressing block; A second spring, wherein the second spring is sleeved on the outer side of the inner support block, one end of the second spring is connected to the inner wall of the fastening nail, and the other end of the second spring is connected to the inner support block; Wherein, the first external thread is matched with the first internal thread.

3. A foundation pit support device according to claim 2, characterized in that: The inner support mechanism also includes: a first bearing seat, the first bearing seat being mounted on the lifting plate; A first rotating shaft, the first rotating shaft passes through the first bearing seat, the first rotating shaft is rotatably connected to the first bearing seat, and the first rotating shaft is perpendicular to the first lead screw; A first bevel gear, wherein the first bevel gear is sleeved on the outside of the first lead screw and is located above the lifting plate; A second bevel gear, wherein the second bevel gear is sleeved on the outer side of one end of the first rotating shaft, and the second bevel gear is meshed with the first bevel gear; A gear, the gear being sleeved on the outer side of the other end of the first rotating shaft; A mounting frame, the mounting frame is L-shaped and fixed to the bottom of the inner wall of the base; A rack is mounted on the mounting frame and meshes with the gear.

4. A foundation pit support device according to claim 3, characterized in that: The lifting mechanism comprises: a second mounting plate connected to an inner wall of the base; a second threaded hole, wherein a second internal thread is provided in the second threaded hole, and the second threaded hole is provided in the lifting plate; A second lead screw, wherein a second external thread is disposed on an outer wall of the second lead screw, one end of the second lead screw is rotatably connected to the second mounting plate, the other end of the second lead screw is rotatably connected to the bottom of the base, and the second lead screw passes through the second threaded hole; Wherein, the second internal thread is matched with the second external thread.

5. A foundation pit support device according to claim 4, characterized in that: The foundation pit supporting device also includes: A second bearing seat, wherein two of the second bearing seats are mounted on the bottom of the first mounting plate, and a distance is provided between the two second bearing seats; A second rotating shaft, wherein the second rotating shaft passes through the two second bearing seats in sequence, and the second rotating shaft is rotatably connected to the two second bearing seats at the same time; A third bevel gear, wherein two third bevel gears are respectively mounted on both ends of the second rotating shaft; A fourth bevel gear, wherein two fourth bevel gears are respectively mounted on the outsides of the two second lead screws, the fourth bevel gears are located above the second mounting plate, and the fourth bevel gears are meshed with the third bevel gear; A first motor, wherein the first motor is provided with a first output shaft and the first motor is mounted on the first mounting plate; A first pulley, wherein the first pulley is sleeved on an outer side of a first output shaft of the first motor; A second pulley, wherein the second pulley is sleeved on an outer side of the second rotating shaft; A belt is simultaneously sleeved on the outer sides of the first pulley and the second pulley.

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