Construction device capable of dewatering in red sandstone stratum foundation pit

Abstract

The utility model relates to the related technical field of building construction, in particular to a construction device capable of dewatering in a red sandstone stratum foundation pit. An output port is formed in one side of the vacuum pump, and a water outlet pipe is arranged on the side, away from the vacuum pump, of the output port. Under the matching action of the vacuum pump, the output port, the water outlet pipe, the water collecting tank, the input port, the main pipeline, the well point pipe, the water suction pipe and the butt joint mechanism, a user can conduct rapid butt joint on the pipeline and the pump body, the working process of butt joint of the pump body and the pipeline is simplified, and the working efficiency is improved; the end opening can be automatically controlled to be closed when the pipeline and the pump body are separated, the water leakage phenomenon is avoided, the practicability is improved, an existing construction device capable of dewatering of the red sandstone stratum foundation pit is generally used for connecting the pipeline and the pump body through a flange plate, a bolt needs to be screwed through a wrench during connection, and the construction efficiency is greatly improved. The butt joint process is relatively complex, and the working efficiency is relatively low.

Description

Technical Field

[0001] The utility model relates to the technical field related to building construction, in particular to a construction device which can be used for dewatering a foundation pit in a red sandstone stratum. Background Art

[0002] The red sandstone in Lanzhou area is coarse-grained sandstone or medium-grained sandstone with relatively uniform particles, relatively low content of silt and clay, poor cementation between particles, and relatively developed cracks and weathering cracks. Before the excavation of the foundation pit, it is in a certain closed state under the action of the deadweight of the overlying soil, and has poor water conductivity. After the excavation of the foundation pit, the overlying soil is removed, the deadweight pressure is reduced, and the cracks and weathering cracks in the original closed state are opened to a certain extent, showing water conductivity. The infiltrated groundwater soaks the bedrock and aggravates the weathering of the bedrock cracks, softens and disintegrates the sandstone, resulting in the sandstone having certain water retention and permeability.

[0003] The utility model patent with announcement number CN214993983U discloses a construction device that can be used for dewatering foundation pits in red sandstone formations. It belongs to the technical field related to construction and aims to solve the problems of poor sealing in the existing technology and lack of shock-absorbing protection measures for the vacuum pump during the dewatering process, which easily leads to damage to the vacuum pump and high cost of use. It includes a foundation, a support platform, a support plate, a vacuum pump, a pressure gauge, a water suction pipe, a mounting seat, a water outlet pipe, a support rod, a magnet 1, a shock-absorbing cavity, a magnet 2, a shock-absorbing mechanism 1, a shock-absorbing mechanism 2, a shock-absorbing frame, a pressure rod, a movable plate, a plug rod, a spring, a water pipe, a foundation pit, a connecting flange, a main pipe, a well point pipe and a water collecting tank. The beneficial effects of this utility model are as follows: a number of well-point pipes are provided, and water inlet holes are provided on the well-point pipes to improve the water absorption efficiency of the well-point pipes. The part of the well-point pipe with the water inlet holes is wrapped with a gauze to prevent the water inlet holes from being blocked by mud and sand during the precipitation process. The main pipe is provided with a plurality of bayonets that match the well-point pipe interfaces, and sealing rings are provided at the connections to facilitate multi-directional precipitation and improve the sealing of the precipitation device. Two-level well points are set for precipitation, which is convenient for precipitation of red sandstone formations at different depths.

[0004] However, the above patent still has shortcomings: when in use, the patent generally connects the pipeline and the pump body through a flange, and a wrench is needed to tighten the bolts during connection. The docking process is relatively complicated and the work efficiency is low. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a construction device that can be used for dewatering foundation pits in red sandstone formations, so as to solve the problem that the existing construction device that can be used for dewatering foundation pits in red sandstone formations in the above background technology generally connects the pipeline and the pump body through a flange when in use, and the bolts need to be tightened with the help of a wrench during connection, the docking process is relatively complicated, and the work efficiency is low.

[0006] The technical solution of the utility model is:

[0007] A construction device capable of dewatering a foundation pit in a red sandstone stratum comprises: a vacuum pump; an output port is provided on one side of the vacuum pump, a water outlet pipe is provided on the side of the output port away from the vacuum pump, a water collecting box is fixedly connected to the side of the water outlet pipe away from the output port, an input port is provided on the top side of the vacuum pump, a main pipeline is provided on the side of the vacuum pump away from the water collecting box, well point pipes are evenly fixedly connected to the bottom of the main pipeline, and a water suction pipe is fixedly connected to the top center of the main pipeline; a docking mechanism for quickly assembling the pipeline and the pump body is provided on the end of the water suction pipe and the water outlet pipe close to the vacuum pump; an elastic mechanism for cushioning the pump body is provided at the bottom of the vacuum pump.

[0008] Preferably, the docking mechanism includes: the water suction pipe and the water outlet pipe are fixedly connected to one end near the vacuum pump with a plug connector, the plug connector is respectively adapted to the output port and the input port, eight ball grooves are provided inside the output port and the input port, steel balls are provided inside the ball grooves, the output port and the input port are slidably connected with an extrusion ring near the steel balls, the outer surface of the extrusion ring is fixedly connected with a connecting ring, the outer surface of the connecting ring is fixedly connected with a force ring, the end of the extrusion ring close to the vacuum pump is provided with a first spring, the first spring is respectively provided inside the output port and the input port; a card groove is provided on the outer surface of the plug connector, a movable groove is provided on the inner wall of the extrusion ring, the card groove and the movable groove are adapted to the steel balls; an automatic opening and closing sealing mechanism is provided inside the output port, the input port and the plug connector.

[0009] Preferably, the sealing mechanism includes: the output port, input port and plug connector are all fixedly connected to the inside of the sealing ring, the inside of the sealing ring is provided with a matching plug, the outer surface of the plug is sleeved with a sealing ring, one end of the plug is fixedly connected to a push rod, the end of the plug away from the push rod is fixedly connected to a connecting frame, and the bottom of the connecting frame is fixedly connected to a sliding block; a plurality of first through holes are provided in the interior of the sliding block, a second spring is provided on the side of the sliding block away from the connecting frame, a fixing plate is provided on the side of the second spring away from the sliding block, the fixing plates are respectively fixedly connected to the output port, input port and plug connector, and a plurality of second through holes are provided in the interior of the fixing plate.

[0010] Preferably, the output port and the input port are both provided with sealing gaskets near the plug connector, and the sealing gaskets are fixedly connected to the output port and the input port respectively.

[0011] Preferably, the elastic mechanism includes: two support frames are fixedly connected to the bottom of the vacuum pump, the bottoms of the support frames are fixedly connected to the buffer plate, and the bottom of the buffer plate is provided with a bottom plate; the four corners of the bottom of the buffer plate are fixedly connected to buffer rods, the bottom ends of the buffer rods pass through the bottom plate and extend to the limit blocks, the limit blocks are fixedly connected to the buffer rods respectively, and four third springs are provided between the buffer plate and the bottom plate, and the third springs are respectively sleeved on the outer surface of the buffer rods.

[0012] Preferably, the outer surfaces of the buffer rods close to the bottom plate are sleeved with matching damping rings, and the damping rings are fixedly connected to the bottom plate.

[0013] Preferably, universal wheels with braking function are provided at the four corners of the bottom of the base plate, and the universal wheels are fixedly connected to the base plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Firstly, the utility model can not only enable the user to quickly connect the pipeline and the pump body through the cooperation of the vacuum pump, the output port, the water outlet pipe, the water collecting box, the input port, the main pipeline, the well point pipe, the water suction pipe and the docking mechanism, but also simplify the workflow of docking the pump body and the pipeline and improve work efficiency, but also can automatically control the port to close when the pipeline is separated from the pump body to avoid water leakage, thereby improving practicality. The existing construction device for dewatering the foundation pit in the red sandstone formation generally connects the pipeline and the pump body through a flange when in use, and a wrench needs to be used to tighten the bolts during connection. The docking process is relatively complicated and the work efficiency is low.

[0016] Secondly, the utility model can buffer and release the force of the vacuum pump during the precipitation process through the cooperation of the vacuum pump, the output port, the water outlet pipe, the water collecting box, the input port, the main pipeline, the well point pipe, the water suction pipe and the elastic mechanism, thereby avoiding the vacuum pump from generating large-scale vibrations during operation, which may cause the internal parts of the vacuum pump to loosen and be damaged, reducing the probability of damage to the vacuum pump and extending the service life of the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a construction device for dewatering a foundation pit in red sandstone strata according to the present invention;

[0018] Figure 2 This is a side cross-sectional structural diagram of a construction device for dewatering a foundation pit in red sandstone strata according to the present invention;

[0019] Figure 3 This is a schematic diagram of the docking mechanism structure of the present utility model;

[0020] Figure 4 This is a schematic diagram of the sealing mechanism structure of the present utility model;

[0021] Figure 5 This is a schematic diagram of the elastic mechanism structure of the utility model;

[0022] Figure 6 For the utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0023] In the picture:

[0024] 1. Vacuum pump; 2. Output port; 3. Water outlet pipe; 4. Water collecting tank; 5. Input port; 6. Main pipeline; 7. Well point pipe; 8. Water suction pipe; 9. Docking mechanism; 10. Elastic mechanism; 11. Plug connector; 12. Ball groove; 13. Steel ball; 14. Extrusion ring; 15. Connecting ring; 16. Force ring; 17. First spring; 18. Slot; 19. Movable slot; 20. Sealing mechanism; 21. Sealing ring; 22. Block; 23. Sealing ring; 24. Push rod; 25. Connecting frame; 26. Sliding block; 27. First through hole; 28. Second spring; 29. ​​Fixed plate; 30. Second through hole; 31. Sealing pad; 32. Support frame; 33. Buffer plate; 34. Bottom plate; 35. Buffer rod; 36. Limit block; 37. Third spring; 38. Damping ring; 39. Universal wheel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 6 The present invention describes the above technical solution in detail through the following embodiments:

[0027] A construction device for dewatering a foundation pit in a red sandstone formation comprises: a vacuum pump 1; an output port 2 is provided on one side of the vacuum pump 1; a water outlet pipe 3 is provided on the side of the output port 2 away from the vacuum pump 1; a water collecting tank 4 is fixedly connected to the side of the water outlet pipe 3 away from the output port 2; an input port 5 is provided on the top side of the vacuum pump 1; a main pipeline 6 is provided on the side of the vacuum pump 1 away from the water collecting tank 4; well point pipes 7 are evenly fixedly connected to the bottom of the main pipeline 6; a water suction pipe 8 is fixedly connected to the center of the top of the main pipeline 6; the water suction pipe 8 and The water outlet pipe 3 is provided with a docking mechanism 9 for quickly assembling the pipeline and the pump body at one end close to the vacuum pump 1; the bottom of the vacuum pump 1 is provided with an elastic mechanism 10 for buffering the pump body. The user can quickly dock the water outlet pipe 3 with the output port 2, and then quickly dock the water suction pipe 8 with the input port 5, start the vacuum pump 1, and the vacuum pump 1 absorbs water inside the red sandstone formation foundation pit through the water suction pipe 8, the main pipeline 6 and the well point pipe 7, and transports the absorbed water to the inside of the water collecting tank 4 through the water outlet pipe 3.

[0028] like Figure 3As shown, the docking mechanism 9 includes: the ends of the water suction pipe 8 and the water outlet pipe 3 near the vacuum pump 1 are fixedly connected with a plug connector 11, the plug connector 11 is adapted to the output port 2 and the input port 5 respectively, the output port 2 and the input port 5 are provided with eight ball grooves 12 inside, the ball grooves 12 are provided with steel balls 13 inside, the output port 2 and the input port 5 are slidably connected with an extrusion ring 14 near the steel balls 13, the outer surface of the extrusion ring 14 is fixedly connected with a connecting ring 15, the connecting ring 15 The outer surface of each of the connectors 11 is fixedly connected with a force ring 16, and the end of the extrusion ring 14 close to the vacuum pump 1 is provided with a first spring 17, which is respectively arranged inside the output port 2 and the input port 5; the outer surface of the connector 11 is provided with a card groove 18, and the inner wall of the extrusion ring 14 is provided with a movable groove 19, and the card groove 18 and the movable groove 19 are adapted to the steel ball 13; the interior of the output port 2, the input port 5 and the connector 11 are provided with an automatic opening and closing sealing mechanism 20, and the user can respectively open and close the outlet port 2, the input port 5 and the connector 11. When the pump is released, the user pulls the force ring 16 and then the plug connector 11 to remove the plug connector 11 from the outlet 2 and the inlet 5.

[0029] like Figure 3 Figure 4As shown, the sealing mechanism 20 includes: the output port 2, the input port 5 and the plug connector 11 are all fixedly connected to the interior of the sealing ring 21, the interior of the sealing ring 21 is provided with a matching plug 22, the outer surface of the plug 22 is sleeved with a sealing ring 23, one end of the plug 22 is fixedly connected to the ejector rod 24, the end of the plug 22 away from the ejector rod 24 is fixedly connected to the connecting frame 25, and the bottom of the connecting frame 25 is fixedly connected to the sliding block 26; a plurality of first through holes 27 are provided in the interior of the sliding block 26, a second spring 28 is provided on the side of the sliding block 26 away from the connecting frame 25, and a fixing plate 29 is provided on the side of the second spring 28 away from the sliding block 26, the fixing plate 29 is fixedly connected to the output port 2, the input port 5 and the plug connector 11 respectively, and the interior of the fixing plate 29 is provided with a plurality of There are two second through holes 30. When the user inserts the plug connector 11 into the output port 2 and the input port 5, the two push rods 24 contact and push each other. The push rods 24 drive the plug block 22 respectively, so that the plug block 22 drives the sealing ring 23 to separate from the sealing ring 21, and the water flow can pass through the gap between the plug block 22 and the sealing ring 21. When the plug connector 11 is separated from the output port 2 and the input port 5, the second spring 28 generates elastic recovery through the fixed plate 29, and then pushes the sliding block 26. The sliding block 26 drives the connecting frame 25, and the connecting frame 25 drives the plug block 22. The plug block 22 drives the sealing ring 23 to fit tightly with the sealing ring 21, so as to achieve the purpose of automatic sealing. When the pipeline is separated from the pump body, the port can be automatically controlled to be closed to avoid water leakage, thereby improving practicality.

[0030] like Figure 3 As shown, a sealing gasket 31 is provided near the output port 2 and the input port 5 near the plug connector 11. The sealing gasket 31 is fixedly connected to the output port 2 and the input port 5 respectively, thereby improving the sealing performance of the connection between the plug connector 11 and the output port 2 and the input port 5, and avoiding water leakage.

[0031] like Figure 5 and Figure 6As shown, the elastic mechanism 10 includes: two support frames 32 are fixedly connected to the bottom of the vacuum pump 1, the bottoms of the support frames 32 are fixedly connected to the buffer plates 33, and the bottom of the buffer plates 33 is provided with a bottom plate 34; the four corners of the bottom of the buffer plates 33 are fixedly connected to buffer rods 35, the bottom ends of the buffer rods 35 pass through the bottom plate 34 and extend to the limit blocks 36, the limit blocks 36 are fixedly connected to the buffer rods 35, and four third springs 37 are provided between the buffer plates 33 and the bottom plate 34. The third springs 37 are respectively sleeved on the outer surface of the buffer rods 35. When the vacuum pump 1 is running, When high-frequency vibration is generated, the buffer plate 33 drives the buffer rod 35, and the buffer rod 35 slides inside the bottom plate 34, and then the buffer plate 33 squeezes the third spring 37 through the bottom plate 34. The third spring 37 uses its own elasticity to relieve the force of the buffer plate 33, thereby achieving the purpose of buffering the vacuum pump 1. The vacuum pump 1 can be buffered and relieved during precipitation, avoiding the vacuum pump 1 from generating large-scale vibrations during operation, which may cause the internal components of the vacuum pump 1 to become loose and damaged, thereby reducing the probability of damage to the vacuum pump 1 and extending the service life of the vacuum pump 1.

[0032] like Figure 6 As shown, the outer surface of the buffer rod 35 near the bottom plate 34 is sleeved with a matching damping ring 38, and the damping ring 38 is fixedly connected to the bottom plate 34 to relieve the rebound force generated by the third spring 37.

[0033] like Figure 1 and Figure 5 As shown, universal wheels 39 with braking function are provided at the four corners of the bottom plate 34 , and the universal wheels 39 are fixedly connected to the bottom plate 34 , making it convenient for the user to move and fix the vacuum pump 1 .

[0034] Working principle: the user pulls the force ring 16 on the surface of the output port 2 and the input port 5 respectively, the force ring 16 drives the connecting ring 15, and the connecting ring 15 drives the squeezing ring 14, so that the movable groove 19 inside the squeezing ring 14 moves to the ball groove 12, increasing the movable range of the steel ball 13, and then the suction pipe 8 and the plug connector 11 at one end of the outlet pipe 3 are respectively inserted into the output port 2 and the input port 5, and finally the force ring 16 is released, and the first spring 17 generates elastic recovery to push the squeezing ring 14 to reset. At the same time as the squeezing ring 14 resets, the movable groove 19 inside the extrusion ring 14 separates from the ball groove 12, and squeezes the steel ball 13, so that a small part of the steel ball 13 moves to the inside of the card groove 18 on the surface of the plug connector 11, and the plug connector 11 can be fixed, which enables the user to quickly connect the pipeline and the pump body and start the vacuum pump 1. The vacuum pump 1 draws water inside the red sandstone formation foundation pit through the suction pipe 8, the main pipeline 6 and the well point pipe 7, and transports the sucked water to the water collecting tank 4 through the outlet pipe 3. The inner part of the pump body 11 simplifies the workflow of connecting the pump body and the pipeline and improves the working efficiency. When separating, the user pulls the force ring 16 and then pulls the plug connector 11 to pull the plug connector 11 out of the output port 2 and the input port 5. When the user inserts the plug connector 11 into the output port 2 and the input port 5, the two push rods 24 contact and push each other, and the push rods 24 respectively drive the plug block 22, so that the plug block 22 drives the sealing ring 23 to separate from the sealing ring 21, and the water flow can pass through the gap between the plug block 22 and the sealing ring 21. When the plug connector 11 is separated from the output port 2 and the input port 5, the second spring 28 generates elastic recovery through the fixing plate 29, and then pushes the sliding block 26, the sliding block 26 drives the connecting frame 25, the connecting frame 25 drives the plug block 22, and the plug block 22 drives the sealing ring 23 to fit tightly with the sealing ring 21, thereby achieving the purpose of automatic sealing. The port can be automatically controlled to close when the pipeline is separated from the pump body to avoid water leakage, thereby improving practicality.

[0035] When the vacuum pump 1 generates high-frequency vibration during operation, the buffer plate 33 drives the buffer rod 35, and the buffer rod 35 slides inside the bottom plate 34, and then the buffer plate 33 squeezes the third spring 37 through the bottom plate 34. The third spring 37 uses its own elasticity to relieve the force of the buffer plate 33, thereby achieving the purpose of buffering the vacuum pump 1. The vacuum pump 1 can be buffered and relieved during precipitation, avoiding the vacuum pump 1 from generating large-scale vibrations during operation, which may cause the internal components of the vacuum pump 1 to become loose and damaged, thereby reducing the probability of damage to the vacuum pump 1 and extending the service life of the vacuum pump 1.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A construction device for dewatering a foundation pit in red sandstone strata, comprising: Vacuum pump (1); The invention is characterized in that an output port (2) is provided on one side of the vacuum pump (1), a water outlet pipe (3) is provided on the side of the output port (2) away from the vacuum pump (1), a water collecting tank (4) is fixedly connected to the side of the water outlet pipe (3) away from the output port (2), an input port (5) is provided on the top side of the vacuum pump (1), a main pipeline (6) is provided on the side of the vacuum pump (1) away from the water collecting tank (4), a well point pipe (7) is evenly fixedly connected to the bottom of the main pipeline (6), and a water suction pipe (8) is fixedly connected to the center of the top of the main pipeline (6); The water suction pipe (8) and the water outlet pipe (3) are provided with a docking mechanism (9) at one end close to the vacuum pump (1) for quickly assembling the pipe and the pump body; The bottom of the vacuum pump (1) is provided with an elastic mechanism (10) for buffering the pump body.

2. A construction device for dewatering a foundation pit in red sandstone strata according to claim 1, characterized in that: The docking mechanism (9) comprises: The water suction pipe (8) and the water outlet pipe (3) are fixedly connected to a plug connector (11) at one end close to the vacuum pump (1), and the plug connector (11) is respectively adapted to the output port (2) and the input port (5). Eight ball grooves (12) are provided inside the output port (2) and the input port (5), and steel balls (13) are provided inside the ball grooves (12). The output port (2) and the input port (5) are slidably connected to an extrusion ring (14) near the steel balls (13). The outer surface of the extrusion ring (14) is fixedly connected to a connecting ring (15), and the outer surface of the connecting ring (15) is fixedly connected to a force ring (16). The end of the extrusion ring (14) close to the vacuum pump (1) is provided with a first spring (17), and the first spring (17) is respectively provided inside the output port (2) and the input port (5); The outer surface of the plug connector (11) is provided with a clamping groove (18), and the inner wall of the extrusion ring (14) is provided with a movable groove (19), and the clamping groove (18) and the movable groove (19) are both adapted to the steel ball (13); The output port (2), the input port (5) and the plug connector (11) are all provided with an automatically opening and closing sealing mechanism (20) inside.

3. A construction device for dewatering a foundation pit in red sandstone strata according to claim 2, characterized in that: The sealing mechanism (20) comprises: The output port (2), the input port (5) and the plug connector (11) are all fixedly connected with a sealing ring (21), the sealing ring (21) is provided with a matching plug (22) inside, the outer surface of the plug (22) is sleeved with a sealing ring (23), one end of the plug (22) is fixedly connected with a push rod (24), the end of the plug (22) away from the push rod (24) is fixedly connected with a connecting frame (25), and the bottom of the connecting frame (25) is fixedly connected with a sliding block (26); A plurality of first through holes (27) are provided inside the sliding block (26), a second spring (28) is provided on the side of the sliding block (26) away from the connecting frame (25), a fixing plate (29) is provided on the side of the second spring (28) away from the sliding block (26), the fixing plate (29) is fixedly connected to the output port (2), the input port (5) and the plug connector (11) respectively, and a plurality of second through holes (30) are provided inside the fixing plate (29).

4. The construction device for dewatering a foundation pit in red sandstone strata according to claim 2, characterized in that: The output port (2) and the input port (5) are both provided with sealing gaskets (31) near the plug connector (11), and the sealing gaskets (31) are fixedly connected to the output port (2) and the input port (5), respectively.

5. The construction device for dewatering a foundation pit in red sandstone strata according to claim 1, characterized in that: The elastic mechanism (10) comprises: Two support frames (32) are fixedly connected to the bottom of the vacuum pump (1), the bottoms of the support frames (32) are fixedly connected to a buffer plate (33), and a bottom plate (34) is provided at the bottom of the buffer plate (33); The four corners of the bottom of the buffer plate (33) are fixedly connected with buffer rods (35), the bottom ends of the buffer rods (35) pass through the bottom plate (34) and extend to the limit blocks (36), the limit blocks (36) are respectively fixedly connected to the buffer rods (35), and four third springs (37) are provided between the buffer plate (33) and the bottom plate (34), and the third springs (37) are respectively sleeved on the outer surfaces of the buffer rods (35).

6. The construction device for dewatering a foundation pit in red sandstone strata according to claim 5, characterized in that: The outer surface of the buffer rod (35) near the bottom plate (34) is sleeved with a matching damping ring (38), and the damping ring (38) is fixedly connected to the bottom plate (34).

7. The construction device for dewatering a foundation pit in red sandstone strata according to claim 5, characterized in that: Universal wheels (39) with a braking function are provided at the four corners of the bottom of the base plate (34), and the universal wheels (39) are fixedly connected to the base plate (34).

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