A soil foundation cushion-free formwork support system

Abstract

The application belongs to the technical field of building construction, and particularly relates to a plain soil foundation cushion-free formwork support system, which comprises a bottom plate and sliding blocks, the top of the bottom plate is slidably fixed with the sliding blocks on both sides, each sliding block is detachably fixed with a first hydraulic cylinder on the top, each first hydraulic cylinder is fixed with a fixing module on the top, the opposite side of each sliding block is installed with a horizontal gyroscope, the fixing module is internally provided with a fixing column, a movable block, a clamping plate, a plug rod, an inclination sensor and an alarm, a control module is fixed in the bottom plate, and support columns, second hydraulic cylinders and sensors are installed on the bottom plate at four corners, so that the fixing module can fix the support on the equipment, the horizontal gyroscope, the control module, the inclination sensor, the alarm, the first hydraulic cylinder, the second hydraulic cylinder and the sensor can cooperate with each other to more quickly and accurately observe whether the support is inclined, and can alarm and timely adjust.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, and in particular to a foundation soil base free cushion formwork support system. BACKGROUND

[0002] In the process of various engineering foundation trench backfill construction, problems such as narrow foundation trench backfill space, large backfill depth, unstable backfill soil ramming quality, and high quality requirements of backfill soil often occur; in recent years, more and more deep foundation pit support projects have been implemented, and accidents of building water scattering, pipe damage, and household road subsidence caused by non-dense backfill soil have occurred from time to time, resulting in loss of use function. At the same time, the foundation trench backfill cannot be backfilled densely due to the limitation of backfill conditions and space, which poses a threat to the seismic performance of high-rise buildings.

[0003] In the prior art, when the support is erected, a concrete cushion is needed to be punched on the backfilled soil, and then the support is erected on the concrete cushion. However, the concrete cushion needs time to solidify, which wastes time, and the weight of the support is very heavy, so when the concrete cushion subsides, the support will tilt and collapse, which will cause damage to the workers and is not safe. SUMMARY

[0004] Based on the existing problems in building construction technology, the present application provides a foundation soil base free cushion formwork support system.

[0005] The foundation soil base free cushion formwork support system provided by the present application comprises a bottom plate and a sliding block, the top of the bottom plate is slidably fixed with a sliding block on both sides, and the top of each sliding block is detachably fixed with a first hydraulic cylinder, the top of each first hydraulic cylinder is fixed with a fixed module, the opposite side of the two sliding blocks is provided with a third installation groove, and a horizontal gyroscope is installed in each third installation groove.

[0006] Preferably, a sliding groove is formed in the top of the bottom plate, the sliding groove is matched with the sliding block, a first bidirectional screw rod is rotatably fixed in the sliding groove, the outer wall of the first bidirectional screw rod is threadedly fixed with the fixed module, the first bidirectional screw rod penetrates through the bottom plate and extends to the outside of the bottom plate, a first motor is fixed on the outside of the bottom plate, and the transmission shaft of the first motor is coaxially fixed with the first bidirectional screw rod through a shaft coupling.

[0007] Through the operation of the first motor, the two sliding blocks can move towards each other, so that the positions of the two fixed modules can be adjusted, different width supports can be installed, and the use is convenient.

[0008] Preferably, the top of the sliding block is detachably fixed with a mounting plate, and the mounting plate is threadedly fixed with the sliding block through protection bolts at four corners, and a first hydraulic cylinder is fixed at the top middle of the mounting plate.

[0009] Through the above technical scheme, the first hydraulic cylinder is fixed with the sliding block through the protection bolts, so that the first hydraulic cylinder can be conveniently fixed, and when the first hydraulic cylinder is damaged, the first hydraulic cylinder can be conveniently replaced.

[0010] Preferably, the bottom plate is provided with a clamping groove at both ends of one side, and a second installation groove is provided between the two clamping grooves, a double-direction internal thread pipe is rotatably fixed in the second installation groove, a second driven bevel gear is sleeved on the outer wall of the middle part of the double-direction internal thread pipe, a second shaft rod is rotatably fixed in the second installation groove below the second driven bevel gear, the second shaft rod penetrates through the bottom plate to the outside of the bottom plate, a handle is fixed at the end of the second shaft rod, a second driving bevel gear is sleeved on the outer wall of the second shaft rod, the second driving bevel gear is meshed with the second driven bevel gear, and screws are threadedly connected to both ends of the double-direction internal thread pipe, and the threads of the two screws are opposite.

[0011] Through the above technical scheme, the second driving bevel gear and the second driven bevel gear are meshed, and the bottom plate inside the two clamping grooves and the second installation groove is threadedly fixed with the double-direction internal thread pipe and the clamping groove, so that the rotation of the second shaft rod can drive the two screws to move towards each other, so that the screws can enter the clamping groove or retract into the second installation groove.

[0012] Preferably, the top of the bottom plate is provided with a movable groove at both ends of the other side, and a rotating block is hingedly fixed in each movable groove, an extension rod is fixedly arranged at the middle of one side of the rotating block, a clamping block matched with the clamping groove is fixed at the end of the extension rod, and fixing grooves are formed in the two side surfaces of the clamping block and matched with the screws.

[0013] Through the above technical scheme, the movable groove, the rotating block, the extension rod and the clamping block are matched with each other, so that when the support is assembled, the two clamping blocks are clamped into the clamping grooves, and then the two screws are clamped into the fixing grooves, so that the plurality of bottom plates are fixed, and the whole is more stable and less likely to overturn.

[0014] Preferably, a first installation groove is formed in the middle of the side surface of the bottom plate between the two movable grooves, a control module is fixedly arranged in the first installation groove, heat dissipation fans are fixedly arranged on both sides of the control module in the first installation groove, heat dissipation fins are arranged on the side of the control module close to the outside of the bottom plate, and a heat dissipation window is fixedly arranged outside the first installation groove.

[0015] Through the technical scheme, the heat dissipation fan and the heat dissipation fin cooperate with each other, so that the control module can be cooled and heat-dissipated, thereby ensuring normal operation of the control module.

[0016] Preferably, the fixing module comprises a fixing plate fixed at the top of the first hydraulic cylinder, and an installation rack is fixedly installed on the outer side of each of the two fixing plates.

[0017] Through the technical scheme, the fixing column is used to allow the support to be sleeved on the fixed outer wall, thereby facilitating installation and fixation of the support and the equipment.

[0018] Preferably, a second motor is fixedly arranged on the outer side of the installation rack away from the fixing column, a first shaft rod is fixedly connected to the transmission shaft of the second motor through a shaft coupling, the first shaft rod penetrates through the installation rack and is rotatably arranged in the installation rack, a first driving bevel gear is fixedly arranged at the end of the first shaft rod, a second bidirectional screw rod is rotatably arranged on the upper portion of the first shaft rod in the installation rack and is arranged at a right angle with the first shaft rod, a first driven bevel gear is sleeved on the outer wall of the middle portion of the second bidirectional screw rod, and movable blocks are threadedly fixed on the outer walls of both ends of the second bidirectional screw rod, a connecting rod is fixedly arranged on the side of each movable block close to the fixing column, a clamping plate is fixedly arranged at the end of the connecting rod, and an insertion rod matching the insertion hole is fixedly arranged on the opposite side of each clamping plate.

[0019] Through the technical scheme, the first driven bevel gear meshes with the first driving bevel gear, so that the rotation of the second motor can drive the second bidirectional screw rod to rotate, thereby driving the two movable blocks to move towards each other, so that when the support is installed on the outer wall of the fixing column, the insertion rod is inserted into the inner portion of the fixing column, and the clamping plate abuts against the outer wall of the support, thereby making the support more stable on the equipment.

[0020] Preferably, a fixing block is fixedly arranged at each corner of the bottom of the bottom plate, a fourth installation groove is arranged at the bottom of each fixing block, a support column is fixedly arranged in each fourth installation groove, a fifth installation groove is arranged at the bottom of each support column, a second hydraulic cylinder is installed in each fifth installation groove, a support seat matching the fifth installation groove is fixedly arranged at the bottom of the second hydraulic cylinder, and an inductor is installed on the side of the support column in each fourth installation groove.

[0021] Through the technical scheme, the installation of the second hydraulic cylinder allows each corner of the bottom plate to be independently adjusted in height, and the use of the inductor can realize more accurate automatic leveling function; the second hydraulic cylinder can quickly respond according to the feedback of the inductor, automatically adjust the height of the support column, thereby quickly restore the horizontal state of the bottom plate, and make it more secure.

[0022] Preferably, the bottom of the supporting column and the fifth mounting groove are both provided with anti-skid pads.

[0023] Through the above technical scheme, the anti-skid pads can increase the friction with the ground, so that the installation is more stable and the use is safer.

[0024] The beneficial effects of the present application are:

[0025] 1. Through the cooperation of the horizontal gyroscope, the tilt sensor, the control module, the inductor, the first hydraulic cylinder and the second hydraulic cylinder, the horizontal gyroscope and the tilt sensor can detect the inclination of the support in time and accurately, the inductor can accurately detect the contact state of the supporting column and the ground, so that the first time transmission is transmitted to the control module, the control module sends instructions to the corresponding first hydraulic cylinder and second hydraulic cylinder, and the first hydraulic cylinder and second hydraulic cylinder are stretched and contracted according to the instructions, so that the bottom plate is adjusted to be parallel to the ground, so that the whole device is leveled, and the alarm is set, so that the support can alarm in the first time when it is inclined, so that the staff can respond in time, and the safety of the staff can be ensured.

[0026] 2. Through the cooperation of the second motor, the first driven bevel gear, the second bidirectional screw rod, the first driving bevel gear, the clamping plate, the inserting rod and the movable block, when the support is sleeved on the outer wall of the fixed column, the second motor can drive the inserting rod to insert into the insertion hole, and the clamping plate abuts against the support, so that the support can be more stably fixed on the device.

[0027] 3. Through the cooperation of the bidirectional internal thread pipe, the screw rod, the second driven bevel gear, the second shaft rod, the handle, the rotating block, the clamping block, the fixing groove and the telescopic rod, after the support is fixed, every two adjacent devices are connected through the telescopic rod, the clamping block is clamped into the clamping groove, and the handle is rotated, so that the screw rod is clamped into the fixing groove, so that multiple bottom plates are connected and fixed, so that the support is more stable and less inclined. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a front overall appearance diagram of a soil foundation cushion-free formwork support system;

[0029] Figure 2 It is a front overall sectional view of a soil foundation cushion-free formwork support system;

[0030] Figure 3 It is a back overall appearance diagram of a soil foundation cushion-free formwork support system;

[0031] Figure 4It is a back overall sectional view of a template support system of a soil foundation without cushion layer for the application;

[0032] Figure 5 It is a fixed module enlarged view of a template support system of a soil foundation without cushion layer for the application;

[0033] Figure 6 It is Figure 4 It is an enlarged view of A in the middle;

[0034] Figure 7 It is Figure 2 It is an enlarged view of B in the middle;

[0035] Figure 8 It is a bottom view schematic diagram of a template support system of a soil foundation without cushion layer for the application;

[0036] Figure 9 It is Figure 8 It is an enlarged view of C in the middle.

[0037] In the figure: 1, bottom plate; 2, sliding block; 3, mounting plate; 4, first hydraulic cylinder; 5, fixed module; 501, fixed plate; 502, fixed column; 503, mounting frame; 504, jack; 505, second motor; 506, first shaft rod; 507, first driving bevel gear; 508, second bidirectional screw rod; 509, first driven bevel gear; 510, movable block; 511, connecting rod; 512, clamping plate; 513, insertion rod; 514, inclination sensor; 515, alarm; 7, clamping groove; 8, sliding groove; 9, first bidirectional screw rod; 10, first motor; 11, telescopic rod; 12, clamping block; 13, heat dissipation window; 14, movable groove; 15, rotating block; 16, protective bolt; 17, non-slip pad; 18, fixed groove; 19, first mounting groove; 20, control module; 21, heat dissipation fin; 22, heat dissipation fan; 23, second mounting groove; 24, bidirectional internal thread pipe; 25, second driven bevel gear; 26, second shaft rod; 27, second driving bevel gear; 28, screw rod; 29, handle; 30, third mounting groove; 31, horizontal gyroscope; 32, fixed block; 33, support column; 34, fourth mounting groove; 35, fifth mounting groove; 36, second hydraulic cylinder; 37, support base; 38, inductor. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments of the application.

[0039] Embodiment one:

[0040] Reference Figures 1-9The utility model provides a kind of soil base cushion-free template support system, including bottom plate 1 and sliding block 2, the top of the bottom plate 1 both sides are slidably fixed with sliding block 2, and the top of each sliding block 2 is detachably fixed with first hydraulic cylinder 4, the top of each first hydraulic cylinder 4 is fixed with fixed module 5, and the opposite side of two sliding blocks 2 is equipped with third installation groove 30, and the inside of each third installation groove 30 is equipped with horizontal gyroscope 31;The top of the bottom plate 1 is equipped with sliding slot 8, and the sliding slot 8 is matched with the sliding block 2;First bidirectional screw rod 9 is rotatably fixed in the sliding slot 8, and the outer wall of the first bidirectional screw rod 9 is threadedly fixed with fixed module 5, and the first bidirectional screw rod 9 is rotatably penetrated through the bottom plate 1 to the outside of the bottom plate 1, and first motor 10 is fixed on the outside of the bottom plate 1, and the transmission shaft of the first motor 10 is coaxially fixed with the first bidirectional screw rod 9 by coupling;The operation of the first motor 10 can drive two sliding blocks 2 to move towards each other, so that the support of different width is facilitated, and the support is facilitated to be built;The top of the sliding block 2 is detachably fixed with mounting plate 3, and the mounting plate 3 is threadedly fixed with the sliding block 2 by protection bolt 16 at four corners, and first hydraulic cylinder 4 is fixed on the top of the mounting plate 3;The mounting plate 3 and the sliding block 2 are fixed by using protection bolt 16, so that the first hydraulic cylinder 4 is facilitated to be replaced and maintained;Clamping groove 7 is formed at both ends of one side of the bottom plate 1, and second installation groove 23 is formed between the two clamping grooves 7, bidirectional internal thread pipe 24 is rotatably fixed in the second installation groove 23, second driven bevel gear 25 is sleeved on the middle outer wall of the bidirectional internal thread pipe 24, second shaft rod 26 is rotatably fixed in the second installation groove 23 below the second driven bevel gear 25, and the second shaft rod 26 is rotatably penetrated through the bottom plate 1 to the outside of the bottom plate 1, handle 29 is fixed on the end of the second shaft rod 26, second driving bevel gear 27 is sleeved on the outer wall of the second shaft rod 26, and the second driving bevel gear 27 is meshed with the second driven bevel gear 25, screw rod 28 is threadedly connected on both ends of the bidirectional internal thread pipe 24, and the threads of the two screw rods 28 are opposite, threaded grooves are formed between the two clamping grooves 7 and the second installation groove 23, and the threaded grooves are matched with the screw rods 28;The second driving bevel gear 27 and the second driven bevel gear 25 are meshed, and the two screw rods 28 and the bidirectional internal thread pipe 24 are threadedly fixed with the inside of the bottom plate 1 between the clamping groove 7 and the second installation groove 23, so that the rotation of the second shaft rod 26 can drive two screw rods 28 to move towards each other, so that the screw rod 28 is facilitated to be inserted into the clamping groove 7 or to be retracted into the second installation groove 23;The top of the other side of the bottom plate 1 is equipped with movable slot 14 at both ends, and each movable slot 14 is hingedly fixed with rotating block 15 in the inside, telescopic rod 11 is fixed on one side middle of the rotating block 15, clamping block 12 matched with the clamping groove 7 is fixed on the end of the telescopic rod 11, fixed groove 18 is formed on the two side surfaces of the clamping block 12, and the fixed groove 18 is matched with the screw rod 28.The cooperation of the movable groove 14, the rotating block 15, the telescopic rod 11 and the clamping block 12 makes the two clamping blocks 12 clamped into the clamping grooves 7 of the adjacent bottom plates 1, and then the two screw rods 28 are clamped into the fixing grooves 18 by rotating the handle 29, so that the plurality of bottom plates 1 are fixed, and the whole is more stable and not easy to overturn. The first installation groove 19 is arranged between the two movable grooves 14 in the middle of the side of the bottom plate 1, the control module 20 is fixedly arranged in the first installation groove 19, the heat dissipation fan 22 is fixedly arranged on the two sides of the control module 20 in the first installation groove 19, the heat dissipation fin 21 is arranged on the side of the control module 20 close to the outer side of the bottom plate 1, and the heat dissipation window 13 is fixedly arranged on the outer side of the first installation groove 19. The cooperation of the heat dissipation fan 22 and the heat dissipation fin 21 can cool and dissipate heat of the control module 20, so that the normal operation of the control module 20 can be ensured and the control module 20 will not be damaged due to overheating. The fourth installation groove 34 is arranged in the bottom of each of the four fixed blocks 32, the support column 33 is fixedly arranged in each of the fourth installation grooves 34, the fifth installation groove 35 is arranged in the bottom of each of the support columns 33, the second hydraulic cylinder 36 is arranged in each of the fifth installation grooves 35, the support seat 37 matched with the fifth installation groove 35 is fixedly arranged at the bottom of the second hydraulic cylinder 36, and the inductor 38 is arranged on one side of the support column 33 in each of the fourth installation grooves 34. The bottom of each of the support column 33 and the fifth installation groove 35 is provided with the anti-skid pad 17. The installation of the second hydraulic cylinder 36 can independently adjust the height of each corner of the bottom plate 1, and the cooperation with the inductor 38 can realize more accurate automatic leveling function. The second hydraulic cylinder 36 can quickly respond according to the feedback of the inductor 38, automatically adjust the height of the support column 33, and quickly restore the horizontal state of the bottom plate 1. The anti-skid pad 17 can increase the friction with the ground, so that the installation is more stable and the use is safer.

[0041] Embodiment two

[0042] In this embodiment, refer to Figures 1-7On the basis of embodiment one, the fixed module 5 comprises a fixed plate 501 fixed on the top of the first hydraulic cylinder 4, two said fixed plate 501 is fixedly installed with a mounting bracket 503 on the outer side, the fixed plate 501 top middle is fixedly provided with a fixed column 502, and the fixed column 502 middle is provided with a insertion hole 504; The outer side of the mounting bracket 503 away from the fixed column 502 is fixedly provided with a second motor 505, the transmission shaft of the second motor 505 is fixed with a first shaft 506 through a shaft coupling, and the first shaft 506 rotates through the mounting bracket 503 to the inside of the mounting bracket 503, the first shaft 506 end is fixedly provided with a first driving bevel gear 507, a second bidirectional screw 508 is rotatably fixed on the first shaft 506 upper part in the inside of the mounting bracket 503, and the second bidirectional screw 508 is arranged at right angles with the first shaft 506, a first driven bevel gear 509 is sleeved on the outer wall of the second bidirectional screw 508 middle, and the outer wall of the second bidirectional screw 508 both ends is fixedly provided with a movable block 510, the movable block 510 is fixedly provided with a connecting rod 511 on the side close to the fixed column 502, and the connecting rod 511 end is fixedly provided with a clamping plate 512, and the opposite side of the two clamping plates 512 is fixedly provided with a insertion rod 513 matched with the insertion hole 504; Through the meshing of the first driven bevel gear 509 and the first driving bevel gear 507, the operation of the second motor 505 can drive the second bidirectional screw 508 to rotate, so as to drive the two movable blocks 510 to move towards each other, so that when the support is installed on the outer wall of the fixed column 502, the insertion rod 513 is inserted into the inside of the fixed column 502, and the clamping plate 512 abuts against the outer wall of the support, so that the support is installed on the upper surface of the equipment more stably, and the installation is facilitated.

[0043] Working principle: in use, the bottom plate 1 is placed on the ground, the first motor 10 is started, the first bidirectional screw 9 is rotated, the distance between the two sliding blocks 2 is adjusted, then the diameter sleeve is sleeved on the outer wall of the fixed column 502, then the second motor 505 is started, the two movable blocks 510 move towards each other, then the insertion rod 513 is clamped into the inside of the insertion hole 504, the clamping plate 512 abuts against the outer wall of the support, then the rotating block 15 is rotated, the two bottom plates 1 are connected and fixed through the telescopic rod 11, the clamping block 12 enters the clamping groove 7 of the other bottom plate 1, the handle 29 is rotated, the two screws 28 are clamped into the fixed groove 18, and the multiple bottom plates 1 are fixed, so as to form a whole, and the multi-layer sensing of the horizontal gyroscope 31, the inductor 38 and the tilt sensor 514 can quickly find out whether the support is inclined, and the transmission to the control module 20 inside, the control module 20 controls the first hydraulic cylinder 4 and the second hydraulic cylinder 36, so as to adjust the support and the bottom plate 1, so that the support will not be inclined.

[0044] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes to the technical solutions and concepts of the present application within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A formwork support system for a plain soil foundation without a subbase, comprising a base plate (1) and a slider (2), characterized in that: The base plate (1) has sliders (2) slidably fixed on both sides of the top, and each slider (2) can be detachably fixed with a first hydraulic cylinder (4) on the top. Each first hydraulic cylinder (4) is fixed with a fixing module (5) on the top. Each slider (2) has a third mounting groove (30) on one side opposite to the other, and each third mounting groove (30) is equipped with a horizontal gyroscope (31). The top of the base plate (1) is provided with a sliding groove (8), which is adapted to the slider (2); a first bidirectional screw (9) is rotatably fixed inside the sliding groove (8), the outer wall of the first bidirectional screw (9) is threaded to the fixing module (5), and the first bidirectional screw (9) rotatably passes through the base plate (1) to the outside of the base plate (1). A first motor (10) is fixed outside the base plate (1), and the transmission shaft of the first motor (10) is coaxially fixed to the first bidirectional screw (9) through a coupling. The top of the slider (2) is detachably fixed with a mounting plate (3), and the four corners of the mounting plate (3) are threadedly fixed to the slider (2) by protective bolts (16). A first hydraulic cylinder (4) is fixedly provided in the middle of the top of the mounting plate (3). The base plate (1) has slots (7) at both ends on one side, and a second mounting groove (23) is provided between the two slots (7). A bidirectional internal threaded tube (24) is rotatably fixed inside the second mounting groove (23), and a second driven bevel gear (25) is sleeved on the outer wall of the middle part of the bidirectional internal threaded tube (24). A second shaft (26) is rotatably fixed inside the second mounting groove (23) at the lower part of the second driven bevel gear (25), and the second shaft (26) rotatably passes through the base plate (1) to the base plate (1). Externally, a handle (29) is fixedly provided at the end of the second shaft (26), and a second driving bevel gear (27) is sleeved on the outer wall of the second shaft (26). The second driving bevel gear (27) meshes with the second driven bevel gear (25). Both ends of the bidirectional internal threaded tube (24) are threadedly connected to screws (28), and the threads of the two screws (28) are opposite. Threaded grooves are provided between the two slots (7) and the second mounting groove (23), and the threaded grooves are adapted to the screws (28). The bottom plate (1) has movable grooves (14) at both ends on the other side of the top, and a rotating block (15) is hinged and fixed inside each movable groove (14). A telescopic rod (11) is fixed in the middle of one side of the rotating block (15), and a locking block (12) that matches the locking groove (7) is fixed at the end of the telescopic rod (11). A fixing groove (18) is opened on both sides of the locking block (12), and the fixing groove (18) matches the screw (28).

2. The subgrade-free formwork support system for a plain soil foundation according to claim 1, characterized in that: The base plate (1) has a first mounting groove (19) between two movable grooves (14) in the middle of its side. A control module (20) is fixedly installed inside the first mounting groove (19). Cooling fans (22) are fixedly installed on both sides of the control module (20) inside the first mounting groove (19). Heat dissipation fins (21) are installed on the side of the control module (20) near the outside of the base plate (1). A heat dissipation window (13) is fixedly installed on the outside of the first mounting groove (19).

3. The subgrade-free formwork support system for a plain soil foundation according to claim 2, characterized in that: The fixing module (5) includes a fixing plate (501) fixed on the top of the first hydraulic cylinder (4). Mounting brackets (503) are fixedly installed on the outer sides of both fixing plates (501). A fixing post (502) is fixedly provided in the middle of the top of the fixing plate (501), and an insertion hole (504) is opened in the middle of the fixing post (502).

4. The subgrade-free formwork support system for a plain soil foundation according to claim 3, characterized in that: A second motor (505) is fixedly mounted on the outer side of the mounting bracket (503) away from the fixed post (502). The drive shaft of the second motor (505) is fixed to a first shaft (506) via a coupling. The first shaft (506) rotatably passes through the mounting bracket (503) into the interior of the mounting bracket (503). A first drive bevel gear (507) is fixedly mounted at the end of the first shaft (506). A second double-acting screw (508) is rotatably fixed on the upper part of the first shaft (506) inside the mounting bracket (503). 08) The second bidirectional screw (508) is set at a right angle to the first shaft (506). A first driven bevel gear (509) is sleeved on the outer wall of the middle part of the second bidirectional screw (508). Movable blocks (510) are threadedly fixed on the outer walls of both ends of the second bidirectional screw (508). A connecting rod (511) is fixed on the side of the movable block (510) near the fixed column (502). A clamping plate (512) is fixed on the end of the connecting rod (511). A plug rod (513) that matches the plug hole (504) is fixed on the opposite side of the two clamping plates (512).

5. The subgrade-free formwork support system for a plain soil foundation according to claim 4, characterized in that: Fixing blocks (32) are fixed at the four corners of the bottom of the base plate (1), and a fourth mounting groove (34) is opened at the bottom of each of the four fixing blocks (32). A support column (33) is fixed inside each of the fourth mounting grooves (34), and a fifth mounting groove (35) is opened at the bottom of each of the support columns (33). A second hydraulic cylinder (36) is installed inside each of the fifth mounting grooves (35). A support seat (37) adapted to the fifth mounting groove (35) is fixed at the bottom of the second hydraulic cylinder (36), and a sensor (38) is installed on one side of the support column (33) inside each of the fourth mounting grooves (34).

6. The subgrade-free formwork support system for a plain soil foundation according to claim 5, characterized in that: The bottom of both the support column (33) and the fifth mounting groove (35) is equipped with anti-slip pads (17).

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