Road foundation pit drainage device

Abstract

The invention discloses a road foundation pit drainage device, and relates to the technical field of foundation pit drainage, the road foundation pit drainage device comprises a vehicle frame mounted on a walking mechanism, a splicing mechanism and a stone box are mounted on the vehicle frame, a laying mechanism is mounted on the splicing mechanism, the splicing mechanism comprises a box body, a barrier plate is arranged in the box body, an opening for a geotechnical cloth pipe to pass through is formed in the barrier plate, and the geotechnical cloth pipe is arranged in the opening. A storage cavity and a splicing cavity are formed in the two sides of the baffle respectively, a bottom plate of the storage cavity is obliquely arranged, a plurality of geotechnical cloth pipes are placed on the bottom plate, the placing directions of all the geotechnical cloth pipes are consistent, and a bottom plate of the splicing cavity is obliquely arranged; gravels are flattened and tamped through the moving tamping assembly, the gravels in the blind ditch are flattened through the two flat shovels, then the flattened gravels are tamped through the rollers on the rear portion, the drainage efficiency of the blind ditch is improved, and it is avoided that silt is mixed into the blind ditch too much to affect the drainage efficiency.

Description

Technical Field

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

[0002] Roadside foundation pit drainage aims to effectively remove the water in the pit during construction to ensure the smooth and safe construction. There are several common drainage methods, one of which is blind ditch drainage. Blind ditch drainage is usually used in the foundation pit location on the side of urban roads to avoid the construction affecting the beauty of the city. At present, the common construction method of blind ditch drainage is to set up a culvert filled with gravel and coarse sand in or around the foundation pit, bury drainage pipes in the culvert, and let the water collect and discharge through the pipes in the ditch.

[0003] The blind ditch drainage method usually requires compacting the soil in the blind ditch, installing and splicing multiple sections of drainage pipes together, then laying gravel in the ditch, and finally backfilling. At present, artificial sand filling is often used when laying drainage pipes, and the drainage pipes are connected one by one. Due to different construction standards and inappropriate connection methods, most drainage pipes are bent after connection, and the position is not fixed, which wastes time and energy and has poor construction effect. Therefore, the present invention provides a road foundation pit drainage device. Summary of the invention

[0004] The present invention aims at the defects of the prior art and provides a road foundation pit drainage device to overcome the problems in the prior art.

[0005] The technical solution adopted by the present invention is: a road foundation pit drainage device, including a frame installed on a walking mechanism, a splicing mechanism and a stone box installed on the frame, a laying mechanism installed on the splicing mechanism, the splicing mechanism including a box body, a baffle plate arranged in the box body, an opening for the passage of a geotextile tube arranged on the baffle plate, drainage holes evenly distributed on the geotextile tube, the outer surface of the geotextile tube is wrapped with geotextile, a connecting ring is arranged on the geotextile tube, the two sides of the baffle plate are respectively a storage cavity and a splicing cavity, the bottom plate of the storage cavity is inclined and a plurality of geotextile tubes are placed thereon, all the geotextile tubes are placed in the same direction, and the bottom plate of the splicing cavity is inclined; in a working state, the bottom plate of the splicing cavity and the guide plate are on the same inclined surface, the A moving block is fixedly installed on the first end of the guide plate, and the moving block is slidably installed in the sliding frame. The moving path of the moving block is parallel to the inclined surface of the bottom plate of the splicing cavity. The sliding frame is slidably connected with multiple fixed blocks, and the fixed block is installed on the box body. A cross plate is installed on the sliding frame, and the cross plate cooperates with the irregular rod. The irregular rod is provided with a straight section and an oblique section. The irregular rod is connected to the fixed block close to the cross plate through a reset spring, and a matching rod is installed on the moving block. The matching rod cooperates with the irregular rod, and the irregular rod is slidably installed on the box body; a connecting shaft is provided at the second end of the guide plate, and the connecting shaft is slidably installed in the guide groove of the U-shaped frame. The U-shaped frame is rotatably installed on the vertical rod, and the vertical rod is fixedly installed on the box body, and the guide plate is connected to the tamping assembly.

[0006] Furthermore, the size of the splicing cavity matches the diameter of the geotextile tube.

[0007] Furthermore, the tamping assembly includes a horizontal column fixedly mounted on the guide plate, the horizontal column is rotatably connected to the sliding rod, the sliding rod is slidably connected to the tamping frame, a roller is rotatably mounted on the tamping frame, two sliding shafts are fixedly mounted on the tamping frame, a flat shovel is slidably mounted on each sliding shaft, and the two flat shovels are respectively connected to the tamping frame via an extrusion spring.

[0008] Furthermore, each of the flat shovels is provided with a card slot, the card slot matches the card frame, the card frame is fixedly mounted on the side pressure plate, and in the working state, the card frame is inserted into the card slot.

[0009] Furthermore, inclined sections are symmetrically arranged at both ends of the side pressure plate, and the inclined direction is toward the tamping frame. There are two side pressure plates symmetrically distributed on both sides of the tamping frame. A hydraulic cylinder is installed on the sliding rod, and the piston rod of the hydraulic cylinder is connected to the tamping frame.

[0010] Furthermore, the splicing mechanism includes a push plate slidably mounted on the box body, the push plate is threadedly connected to the bidirectional lead screw, the size of the push plate matches the splicing cavity, a rack is fixedly mounted on the push plate, the rack cooperates with a gear, the gear is rotatably mounted on the box body, and the gear is connected to the cam through a belt assembly.

[0011] Furthermore, the cam cooperates with the matching frame, the matching frame is connected to the connecting rod, the connecting rod is slidably installed on the box body, a downward pressure arc plate is arranged on the connecting rod, and an anti-slip elastic material is arranged on the downward pressure arc plate.

[0012] Furthermore, a yield plate is slidably installed in the storage cavity, and the yield plate is connected to the box body through a yield spring.

[0013] Compared with the prior art, the present invention has the following advantages: (1) The present invention slides along the guide plate through the connected multiple geotextile tubes, and the multiple geotextile tubes are pressed on the guide plate, which brings pressure to the compaction assembly, so that the compaction assembly compacts the soil more compactly. The position of the geotextile tube is limited by the splicing cavity and will not be displaced at will, thereby limiting the position of the drainage pipe relative to the blind ditch; (2) In order to ensure that the foundation of the blind ditch is flat and solid and provide sufficient support for the drainage pipe, the bottom and both sides of the blind ditch need to be compacted. When the device moves, gravel is first discharged into the blind ditch, and then the gravel is flattened and compacted by the moving compaction assembly. The gravel in the blind ditch is flattened by two flat shovels, and then the flattened gravel is compacted by the roller at the rear. In this way, after laying a layer of gravel, the drainage pipe is placed, which improves the drainage efficiency of the blind ditch and prevents excessive mixing of silt into the blind ditch to affect the drainage efficiency; (3) After the compaction component of the present invention enters the blind ditch, the two side pressure plates are respectively attached to the soil on both sides of the blind ditch, and the loose soil on both sides is squeezed by the elastic force of the squeezing spring; (4) The present invention presses down the geotextile tube just below the lower pressure arc plate through the anti-slip elastic material on the lower pressure arc plate, so that the pressed geotextile tube stops moving for a preset time. At this time, the push plate continues to push the geotextile tube. Under the push of the push plate, the connecting ring at the front end of the rear geotextile tube is inserted into the tail end of the front geotextile tube, thereby achieving the purpose of connecting the two geotextile tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 The local structure of the splicing mechanism of the present invention is shown in FIG. Figure 1 .

[0016] Figure 3 It is a schematic diagram of the structure of the present invention in a non-working state.

[0017] Figure 4 It is a schematic diagram of the working state structure of the present invention.

[0018] Figure 5 It is a schematic diagram of the storage cavity and splicing cavity structure of the present invention.

[0019] Figure 6 The local structure of the splicing mechanism of the present invention is shown in FIG. Figure 2 .

[0020] Figure 7 It is a schematic diagram of the partial structure of the splicing mechanism and the laying mechanism of the present invention.

[0021] Figure 8 for Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] Fig. 9 It is a partial cross-sectional structural schematic diagram of the laying mechanism of the present invention.

[0023] Fig.10 for Fig. 9 Schematic diagram of the local enlarged structure at point B in the middle.

[0024] Fig.11 It is a schematic diagram of the partial explosion structure of the compaction assembly of the present invention.

[0025] Fig.12 It is a schematic diagram of the local structure of the tamping assembly of the present invention.

[0026] Fig.13 It is a schematic diagram of the local structure of the sliding frame of the present invention.

[0027] Figure numerals: 1-splicing mechanism; 2-laying mechanism; 3-stone box; 4-geotextile tube; 101-box; 102-motor 1; 103-blocking plate; 104-bidirectional screw; 105-push plate; 106-rack; 107-displacement plate; 108-displacement spring; 109-gear; 110-belt assembly; 111-cam; 112-matching frame; 113-connecting rod; 114-downward pressure arc plate; 115-storage chamber; 116-splicing chamber; 201-fixed block; 202-sliding Frame; 203-motor 2; 204-long lead screw; 205-vertical pole; 206-U-shaped frame; 207-guide plate; 208-matching rod; 209-reset spring; 210-irregular rod; 211-cross plate; 212-moving block; 213-sliding rod; 214-connecting shaft; 215-tamping frame; 216-hydraulic cylinder; 217-roller; 218-side pressure plate; 219-flat shovel; 220-card slot; 221-extrusion spring; 222-card frame; 223-sliding shaft; 224-cross column. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and exemplary embodiments, and the illustrative embodiments and description of the present invention are used to explain the present invention, but are not intended to limit the present invention. In addition, if the detailed description of the known technology is unnecessary for illustrating the features of the present invention, it will be omitted.

[0029] Example: Reference Figure 1-Figure 13The road foundation pit drainage device shown in the figure comprises a frame installed on a walking mechanism, a splicing mechanism 1 and a stone box 3 are installed on the frame, gravel is placed in the stone box 3, a discharge assembly is arranged on the stone box 3, a laying mechanism 2 is installed on the splicing mechanism 1, the splicing mechanism 1 comprises a box body 101, a motor 102, a blocking plate 103, a bidirectional screw 104, a push plate 105, a rack 106, a yield plate 107, a yield spring 108, a gear 109, a belt assembly 110, a cam 111, a matching frame 112, a connecting rod 113, a downward pressure arc plate 114, a storage chamber 115, and a splicing chamber 116; the laying mechanism 2 comprises a fixed block 201, a sliding frame 202, a motor 203, a long screw 204, a vertical rod 205 , U-shaped frame 206, guide plate 207, matching rod 208, return spring 209, irregular rod 210, cross plate 211, moving block 212, connecting shaft 214; a blocking plate 103 is installed in the box body 101, and an opening for the geotextile tube 4 to pass through is arranged on the blocking plate 103, the opening length of the blocking plate 103 is larger than the length of one geotextile tube 4 and smaller than the sum of the lengths of two geotextile tubes 4, the opening width of the blocking plate 103 is larger than the diameter of one geotextile tube 4 and smaller than the sum of the diameters of two geotextile tubes 4, the opening position of the blocking plate 103 is at the end away from the compaction component, the geotextile tube 4 is evenly distributed with drainage holes, the outer surface of the geotextile tube 4 is wrapped with geotextile, and a connecting ring is arranged at one end of the geotextile tube 4, All geotextile tubes 4 can be plugged into each other through the connecting ring, and the plug-in position is tight and tight. The two sides of the barrier plate 103 are respectively a storage chamber 115 and a splicing chamber 116. The storage chamber 115 and the splicing chamber 116 are located in the box body 101. The bottom plate of the storage chamber 115 is tilted and multiple geotextile tubes 4 are placed thereon. All geotextile tubes 4 are placed in the same direction, and the bottom plate of the splicing chamber 116 is tilted. In the working state, the bottom plate of the splicing chamber 116 and the guide plate 207 are on the same inclined surface, and a moving block 212 is fixedly installed on the first end of the guide plate 207. The moving block 212 is slidably installed in the sliding frame 202. The moving block 212 is threadedly connected to the long lead screw 204, and the long lead screw 204 is rotatably installed on the sliding frame 202. The lead screw 204 is connected to the output shaft of the second motor 203, the second motor 203 is installed on the sliding frame 202, the moving path of the moving block 212 is parallel to the inclined surface of the bottom plate of the splicing cavity 116, the sliding frame 202 is slidably connected with a plurality of fixed blocks 201, the fixed blocks 201 are installed on the box body 101, a transverse plate 211 is installed on the sliding frame 202, the transverse plate 211 cooperates with the irregular rod 210, the irregular rod 210 is provided with a straight section and an oblique section, the irregular rod 210 is connected to the fixed block 201 close to the transverse plate 211 through a return spring 209, a matching rod 208 is installed on the moving block 212, the matching rod 208 cooperates with the irregular rod 210, and the irregular rod 210 is slidably installed on the box body 101;The second end of the guide plate 207 is provided with a connecting shaft 214, which is slidably mounted in the guide groove of the U-shaped frame 206, and the U-shaped frame 206 is rotatably mounted on the vertical rod 205, and the vertical rod 205 is fixedly mounted on the box body 101, and the guide plate 207 is connected to the tamping assembly. ;

[0030] The size of the splicing cavity 116 matches the diameter of the geotextile tube 4 .

[0031] The tamping assembly includes a slide bar 213, a tamping frame 215, a hydraulic cylinder 216, a roller 217, a side pressure plate 218, a flat shovel 219, a slot 220, an extrusion spring 221, a frame 222, a sliding shaft 223, and a cross column 224; the cross column 224 is fixedly mounted on the guide plate 207, the cross column 224 is rotatably connected to the slide bar 213, the slide bar 213 is slidably connected to the tamping frame 215, the roller 217 is rotatably mounted on the tamping frame 215, two sliding shafts 223 are fixedly mounted on the tamping frame 215, each sliding shaft 223 is slidably mounted with a flat shovel 219, and the two flat shovels 219 are respectively connected to the tamping frame 215 through an extrusion spring 221.

[0032] Each flat shovel 219 is provided with a slot 220 , which matches with a bracket 222 . The bracket 222 is fixedly mounted on the side pressure plate 218 . In the working state, the bracket 222 is inserted into the slot 220 .

[0033] The two ends of the side pressure plate 218 are symmetrically provided with inclined sections, and the inclined direction of the inclined sections of the side pressure plate 218 is toward the tamping frame 215. The side pressure plate 218 has two symmetrically distributed on both sides of the tamping frame 215. A hydraulic cylinder 216 is installed on the sliding rod 213, and the piston rod of the hydraulic cylinder 216 is connected to the tamping frame 215.

[0034] The push plate 105 is slidably installed on the box body 101, the push plate 105 is threadedly connected to the bidirectional screw 104, the bidirectional screw 104 is connected to the output shaft of the motor 102, the motor 102 is installed on the box body 101, the size of the push plate 105 matches the splicing cavity 116, and a rack 106 is fixedly installed on the push plate 105, the rack 106 cooperates with the gear 109, the gear 109 is rotatably installed on the box body 101, and the gear 109 is connected to the cam 111 through the belt assembly 110.

[0035] The cam 111 is rotatably mounted on the box body 101 , the cam 111 is matched with the matching frame 112 , the matching frame 112 is connected with the connecting rod 113 , the connecting rod 113 is slidably mounted on the box body 101 , a lower arc pressure plate 114 is provided on the connecting rod 113 , and an anti-slip elastic material is provided on the lower arc pressure plate 114 .

[0036] A clearance plate 107 is slidably installed in the storage cavity 115 , and the clearance plate 107 is connected to the box body 101 via a clearance spring 108 .

[0037] The working principle of the present invention is as follows: the geotextile tube 4 in the present invention is a hard tube; the device is installed on a walking mechanism and is driven by the walking mechanism to move to the position of the blind ditch to be dug. When the device moves, the first layer of gravel is laid into the blind ditch through the discharge mechanism on the stone box 3.

[0038] Start motor 203 to drive the long screw 204 to rotate, driving the moving block 212 to slide in the sliding frame 202, and the moving block 212 drives the matching rod 208 to move in the direction of the irregular rod 210, driving the guide plate 207 to move, and the guide plate 207 moves to make the U-shaped frame 206 rotate. After the matching rod 208 moves a preset distance, it contacts the irregular rod 210, pushing the irregular rod 210 to slide, compressing the reset spring 209, and driving the oblique section on the irregular rod 210 to contact the cross plate 211, pushing the cross plate 211 to move upward, and the cross plate 211 drives the sliding frame 202 to move upward, and the sliding frame 202 drives the moving block 212 and the guide plate 207 to move upward until the cross plate 211 contacts the straight section of the irregular rod 210. At this time, the position of the sliding frame 202 is stable, and the upper surface of the guide plate 207 and the bottom plate of the splicing cavity 116 are on the same inclined surface.

[0039] Then the motor 203 stops running, and the connecting shaft 214 slides to the end position of the guide groove of the U-shaped frame 206, thereby increasing the stability of the guide plate 207 through the U-shaped frame 206.

[0040] The guide plate 207 drives the compaction assembly to move, so that the compaction assembly enters the blind ditch. In order to ensure that the foundation of the blind ditch is flat and solid and to provide sufficient support for the drainage pipe, the bottom and both sides of the blind ditch need to be compacted. When the device moves, gravel is first discharged into the blind ditch, and then the gravel is flattened and compacted by the moving compaction assembly. The gravel in the blind ditch is flattened by two flat shovels 219, and then the flattened gravel is compacted by the rear roller 217. In this way, after a layer of gravel is laid, the drainage pipe is placed, which improves the drainage efficiency of the blind ditch and prevents too much silt from mixing into the blind ditch and affecting the drainage efficiency; after the compaction assembly enters the blind ditch, the two side pressure plates 218 are respectively attached to the soil on both sides of the blind ditch, and the loose soil on both sides is squeezed by the elastic force of the squeezing spring 221.

[0041] Under normal conditions, due to the tilt of the bottom plate of the storage chamber 115, the geotextile tube 4 in the storage chamber 115 rolls toward the splicing chamber 116. Due to the obstruction of the blocking plate 103, only one geotextile tube 4 rolls into the splicing chamber 116 each time. The start motor 102 drives the bidirectional screw 104 to rotate, and the bidirectional screw 104 drives the push plate 105 to slide in the splicing chamber 116. The push plate 105 pushes the geotextile tube 4 that has rolled to the corresponding position to move the length of the geotextile tube 4 and then returns to the initial position. In the process of the push plate 105 pushing the geotextile tube 4, the push plate 105 blocks the opening position of the blocking plate 103, and the remaining geotextile tubes 4 cannot roll into the splicing chamber 116. When the push plate 105 returns to the initial position, the opening position of the blocking plate 103 is not blocked, and the remaining geotextile tubes 4 can continue to roll into the splicing chamber 116.

[0042] The movement of the push plate 105 drives the rack 106 to move. After the rack 106 moves to the preset position, it meshes with the gear 109, driving the gear 109 to rotate. The gear 109 drives the cam 111 to rotate through the belt assembly 110. The rotation of the cam 111 drives the matching frame 112 to move up and down. When the matching frame 112 moves downward, it drives the connecting rod 113 and the lower arc plate 114 to move downward. The structural design of the cam 111 allows the matching frame 112 to stay at the lowest point for a preset time. The geotextile tube 4 directly below the lower arc plate 114 is pressed down by the anti-slip elastic material on the lower arc plate 114, so that the pressed geotextile tube 4 stops moving for a preset time. At this time, the push plate 105 continues to push the geotextile tube 4. Under the push of the push plate 105, the connecting ring at the front end of the rear geotextile tube 4 is inserted into the tail end of the previous geotextile tube 4, so as to achieve the purpose of connecting the two geotextile tubes 4.

[0043] The multiple connected geotextile tubes 4 slide along the guide plate 207, and the multiple geotextile tubes 4 are pressed on the guide plate 207, which brings pressure to the compaction assembly, so that the compaction assembly compacts the land more compactly. The position of the geotextile tubes 4 is limited by the splicing cavity 116 and will not shift arbitrarily, thereby limiting the position of the drainage pipe relative to the blind ditch.

[0044] As more and more geotextile tubes 4 are spliced ​​together, the drainage pipe becomes longer and longer. When the first geotextile tube 4 contacts the wall of the blind ditch, the walking mechanism drives the device to move, compacting the ground during the movement until all the geotextile tubes 4 are spliced ​​together, and the motor 2 203 is started to reverse, driving the moving block 212 to move in the direction of the motor 1 102, driving the matching rod 208 away from the irregular rod 210, and the irregular rod 210 is reset under the elastic force of the reset spring 209. Then the rod 210 is out of contact with the cross plate 211, and the cross plate 211 and the sliding frame 202 move downward under the gravity of the guide plate 207. The cross plate 211 has no irregular support, and the rod 210 falls on the fixed block 201 under the action of gravity. The cross plate 211 drives the sliding frame 202 to move downward, drives the moving block 212 and the guide plate 207 to move downward, drives the guide plate 207 to move toward the fixed block 201, and retracts the guide plate 207 to the bottom of the box body 101. The guide plate 207 drives the tamping assembly to move.

[0045] By starting the hydraulic cylinder 216 to extend the piston rod, the tamping frame 215 is pushed to slide relative to the slide rod 213, driving the tamping frame 215 away from the blind ditch. At this time, the equipment recovery is completed, and the guide plate 207 is disengaged from the connected geotextile tube 4 during the recovery process. The geotextile tube 4 falls onto the laid gravel, and then the stone box 3 is filled with gravel to complete the blind ditch drainage setting.

[0046] The walking mechanism drives the device to complete the laying of the water pipe in the next blind ditch.

Claims

1. A road foundation pit drainage device, comprising a frame mounted on a traveling mechanism, a splicing mechanism (1) and a stone box (3) mounted on the frame, a laying mechanism (2) mounted on the splicing mechanism (1), the splicing mechanism (1) comprising a box body (101), a baffle plate (103) arranged inside the box body (101), an opening for a geotextile tube (4) to pass through arranged on the baffle plate (103), drainage holes evenly distributed on the geotextile tube (4), the outer surface of the geotextile tube (4) being wrapped with geotextile, characterized in that: A connecting ring is provided on the geotextile tube (4); the two sides of the barrier plate (103) are respectively a storage chamber (115) and a splicing chamber (116); the bottom plate of the storage chamber (115) is arranged obliquely and a plurality of geotextile tubes (4) are placed thereon; all the geotextile tubes (4) are arranged in the same direction; the bottom plate of the splicing chamber (116) is arranged obliquely; in a working state, the bottom plate of the splicing chamber (116) and the guide plate (207) are located on the same inclined surface; a moving block (212) is fixedly installed on the first end of the guide plate (207); the moving block (212) is slidably installed in a sliding frame (202); the moving path of the moving block (212) is parallel to the inclined surface of the bottom plate of the splicing chamber (116); the sliding frame (202) is slidably connected to a plurality of fixed blocks (201); the fixed blocks (201) are installed on a box body (101); and the sliding frame (202) is arranged to move the moving block (212) in parallel with the inclined surface of the bottom plate of the splicing chamber (116); ) is mounted on a horizontal plate (211), the horizontal plate (211) cooperates with an irregular rod (210), the irregular rod (210) is provided with a straight section and an oblique section, the irregular rod (210) is connected to a fixed block (201) close to the horizontal plate (211) via a return spring (209), a matching rod (208) is mounted on the moving block (212), the matching rod (208) cooperates with the irregular rod (210), and the irregular rod (210) is slidably mounted on the box body (101); a connecting shaft (214) is provided at the second end of the guide plate (207), the connecting shaft (214) is slidably mounted in a guide groove of a U-shaped frame (206), the U-shaped frame (206) is rotatably mounted on a vertical rod (205), the vertical rod (205) is fixedly mounted on the box body (101), and the guide plate (207) is connected to a tamping assembly.

2. A road foundation pit drainage device as claimed in claim 1, characterized in that: The size of the splicing cavity (116) matches the diameter of the geotextile tube (4).

3. A road foundation pit drainage device as claimed in claim 2, characterized in that: The tamping assembly comprises a cross column (224) fixedly mounted on the guide plate (207), the cross column (224) being rotatably connected to the slide bar (213), the slide bar (213) being slidably connected to the tamping frame (215), a roller (217) being rotatably mounted on the tamping frame (215), two sliding shafts (223) being fixedly mounted on the tamping frame (215), a flat shovel (219) being slidably mounted on each sliding shaft (223), and the two flat shovels (219) being respectively connected to the tamping frame (215) via a compression spring (221).

4. A road foundation pit drainage device as claimed in claim 3, characterized in that: Each of the flat shovels (219) is provided with a card slot (220), the card slot (220) matches a card frame (222), the card frame (222) is fixedly mounted on the side pressure plate (218), and in a working state, the card frame (222) is inserted into the card slot (220).

5. A road foundation pit drainage device as claimed in claim 4, characterized in that: The two ends of the side pressure plate (218) are symmetrically provided with inclined sections, the inclined direction being toward the tamping frame (215), the side pressure plate (218) has two symmetrically distributed on both sides of the tamping frame (215), the sliding rod (213) is mounted with a hydraulic cylinder (216), and the piston rod of the hydraulic cylinder (216) is connected to the tamping frame (215).

6. A road foundation pit drainage device as claimed in claim 5, characterized in that: The splicing mechanism (1) comprises a push plate (105) slidably mounted on a housing (101), the push plate (105) being threadedly connected to a bidirectional lead screw (104), the size of the push plate (105) matching that of a splicing cavity (116), a rack (106) being fixedly mounted on the push plate (105), the rack (106) cooperating with a gear (109), the gear (109) being rotatably mounted on the housing (101), and the gear (109) being connected to a cam (111) via a belt assembly (110).

7. A road foundation pit drainage device as claimed in claim 6, characterized in that: The cam (111) cooperates with the matching frame (112), the matching frame (112) is connected to the connecting rod (113), the connecting rod (113) is slidably mounted on the box body (101), a downward pressure arc plate (114) is provided on the connecting rod (113), and an anti-slip elastic material is provided on the downward pressure arc plate (114).

8. A road foundation pit drainage device as claimed in claim 7, characterized in that: A clearance plate (107) is slidably mounted in the storage cavity (115), and the clearance plate (107) is connected to the box body (101) via a clearance spring (108).

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