Earthwork digging and filling device for building construction

Abstract

The invention discloses an earthwork digging and filling device for building construction, and relates to the technical field of earthwork digging and filling, the earthwork digging and filling device comprises an auxiliary supporting seat, a slitting assembly and a wrapping assembly, the bottom and the right part of the auxiliary supporting seat penetrate through each other, and the slitting assembly and the wrapping assembly are mounted on the upper right part and the lower left part of the auxiliary supporting seat respectively; a slitting hydraulic cylinder is fixed to the auxiliary supporting seat, a slitting cutter is fixed to the tail end of a piston rod of the slitting hydraulic cylinder, and the wrapping assembly comprises a wrapping hydraulic cylinder, a slotting tool, an automatic winding mechanism and a coiled material. Earthwork can be vertically and transversely cut by controlling the cutting assembly, the cut earthwork can be semi-wrapped by controlling the wrapping assembly, so that moving and transporting are facilitated, then the auxiliary supporting base is controlled to be lifted upwards, complete soil blocks can be formed, the original soil blocks can be backfilled to the original position during backfilling, and the backfilling efficiency is improved. Damage to target earthwork is reduced, it is guaranteed that the whole structure is complete, and therefore the requirement for tamping after backfilling is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of earth excavation and filling, and in particular to an earth excavation and filling device for building construction. Background Art

[0002] In the process of construction, it is often necessary to excavate and backfill earth (collectively referred to as excavation and backfilling), and there are many existing equipment for excavation and backfilling of earth, such as excavators, bulldozers, forklifts, etc. However, these excavation and backfilling equipment are prone to cause serious damage to the soil structure of the excavated earth during construction on soil with high viscosity, that is, serious looseness and collapse, which will cause: First, the gaps in the excavated earth increase and the space occupied increases, which requires frequent compaction during the backfilling process, increasing the complexity of construction; second, it is easy to damage the soil ecological environment, and it is difficult to backfill the earth at a certain location (especially a location in space, including longitude and latitude coordinates and soil layer depth) to its original position, which is not conducive to the restoration of soil ecology. Highlights the shortcomings of existing technologies Summary of the invention

[0003] The purpose of the present invention is to provide an earthwork excavation and filling device for construction, so as to solve the technical problem that the existing earthwork excavation and filling device may cause serious damage to the earthwork structure when excavating and filling the earthwork.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A device for earthwork excavation and filling for construction, comprising a secondary support seat, a slitting assembly, and a wrapping assembly, wherein the bottom and right part of the secondary support seat are penetrated, and the slitting assembly and the wrapping assembly are respectively installed on the upper right part and the lower left part of the secondary support seat, the slitting assembly comprises a slitting hydraulic cylinder and a slitting knife, the secondary support seat is fixed with a slitting hydraulic cylinder, and the end of the piston rod of the slitting hydraulic cylinder is fixed with a slitting knife, the wrapping assembly comprises a wrapping hydraulic cylinder, a inserting knife, an automatic winding mechanism and a coil, the secondary support seat is fixed with a wrapping hydraulic cylinder, and the end of the piston rod of the wrapping hydraulic cylinder is fixed with a inserting knife, the slitting hydraulic cylinder, the slitting knife, the wrapping assembly on the upper right part of the secondary support seat, The wrapping hydraulic cylinder and the inserting knife are arranged vertically, and the slitting hydraulic cylinder, the slitting knife, the wrapping hydraulic cylinder and the inserting knife at the lower left part of the auxiliary support seat are arranged horizontally. The inserting knife at the upper right part of the auxiliary support seat passes through the insertion hole in the left and right directions, and the inserting knife at the lower left part of the auxiliary support seat is fixed with a pin in the left and right directions, and the pin can be inserted with a gap in the insertion hole. The automatic winding mechanism is wound with a coil, and the axial direction of the winding of the slitting knife, the inserting knife and the coil extends along the front-to-back direction. The ends of the two coil release directions are respectively fastened to the two inserting knives and are located on the inner sides of the two inserting knives. The slitting hydraulic cylinder and the wrapping hydraulic cylinder are connected to the hydraulic oil circuit of the external hydraulic system.

[0005] On the basis of the above technical scheme, the slitting knife includes a handle and a knife strip, each of the slitting components includes two slitting hydraulic cylinders, the two slitting hydraulic cylinders in the same slitting component are a group, and the ends of the piston rods of each group of the slitting hydraulic cylinders are commonly fixed with a handle extending in the front-to-back direction, the handle is hollow inside, and the front and rear parts of the handle are respectively fixed with a support arm, the support arm on the upper right part of the auxiliary support seat is vertically arranged, and the support arm on the lower left part of the auxiliary support seat is horizontally arranged, the support arm is slidably connected to the auxiliary support seat, the handle is slidably connected with a knife strip front and back, the blade part of the knife strip is serrated, the inner cavity of the support arm is connected to the inner cavity of the auxiliary support seat, and the auxiliary The front and rear parts of the inner cavity of the support seat are each rotatably connected to a fixed pulley No. 1, and the two support arms at the front and rear parts of the knife handle are commonly fixed with a support frame, and the front and rear parts of the support frame are each rotatably connected to a fixed pulley No. 2 and a fixed pulley No. 3, a servo motor is fixed to the middle part of the support frame, and the rotating shaft of the servo motor is rotatably connected to the support frame, and a winch is coaxially fixed to the rotating shaft of the servo motor, and a cable is spirally wound on the winch, and the two ends of the cable are respectively fixed to the front and rear parts of the knife strip after passing through the fixed pulley No. 3, the fixed pulley No. 2, the inner cavity of the support arm and the fixed pulley No. 1. The servo motor is externally connected to a power supply, and when the servo motor is energized and rotated forward and reversely, it can drive the knife strip to slide back and forth along the knife handle through the cable.

[0006] On the basis of the above technical scheme, the slitting assembly also includes a knife holder, a knife holder is fixed on the upper left part of the auxiliary support seat, and a guide piece is installed on the front and rear parts of the knife holder respectively, the front and rear parts of the slitting knife on the upper right part of the auxiliary support seat are each hinged with an inner shearing blade on the left and right, and the front and rear parts of the slitting knife on the lower left part of the auxiliary support seat are each hinged with an outer shearing blade on the left and right, the left part of the inner shearing blade and the left part of the outer shearing blade are respectively inserted with a gap with the guide piece, and the left part of the inner shearing blade and the left part of the outer shearing blade can swing and slide left and right along the guide piece.

[0007] On the basis of the above technical scheme, the inserting knife includes a knife holder, a fastening bolt and a pressure plate, each of the wrapping components includes three slitting hydraulic cylinders, the three slitting hydraulic cylinders in the same slitting component are a group, and the ends of the piston rods of each group of the slitting hydraulic cylinders are commonly fixed with a knife holder extending in the front-to-back direction, the knife holder is threadedly connected with a plurality of fastening bolts, the fastening bolts are inserted through and connected with the coil, and the fastening bolts threadedly connected with the same knife holder are commonly inserted with a pressure plate, and the pressure plate and the knife holder jointly clamp the coil, the knife holder on the upper right part of the auxiliary support seat is penetrated by a plurality of holes in the left-right direction, and the knife holder on the lower left part of the auxiliary support seat is fixed with a plurality of pins in the left-right direction.

[0008] On the basis of the above technical scheme, the automatic winding mechanism includes a supporting roller, a support, a clockwork spring, a shell, a sliding seat, and a scraping groove, the front and rear parts of the supporting roller are each rotatably connected to a support, the support is fixed to the auxiliary supporting seat, the front and rear parts of the supporting roller are each fixed with a clockwork spring, the end of the clockwork spring in the inward winding extension direction is fixed to the supporting roller, and the end of the clockwork spring in the outward winding extension direction is fixed to the support, the supporting roller has a tendency to wind the coil under the action of the elastic force of the clockwork spring, the supporting roller is gap-inserted in the shell, the front and rear parts of the shell are fixed to the support, the shell is slidably connected with a sliding seat, the sliding seat is perpendicular to the axial direction of the supporting roller in space along the sliding direction of the shell, the sliding seat is penetrated by a scraping groove, the scraping groove is parallel to the axial direction of the supporting roller, and the scraping groove is inserted into the coil.

[0009] On the basis of the above technical scheme, two guide arms are fixed on the upper left part of the auxiliary support seat, and the two guide arms are arranged at the front and rear parts of the auxiliary support seat. A main support seat is installed on the upper left part of the auxiliary support seat, and the main support seat is slidably connected to the guide arm. A plurality of main hydraulic cylinders parallel to the guide arm are fixed to the upper left end of the main support seat, and the piston rod of the main hydraulic cylinder passes through the main support seat and is fixed to the auxiliary support seat. The main hydraulic cylinder is connected to the external hydraulic system by the hydraulic oil circuit. When the main hydraulic cylinder retracts the piston rod, it can drive the auxiliary support seat to perform reciprocating linear sliding from the upper left to the lower right compared to the main support seat. The main support seat is also fixed with a mounting seat connected to external construction equipment.

[0010] On the basis of the above technical scheme, the material of the coil is nylon cloth or canvas, the types of the slitting hydraulic cylinder, the wrapping hydraulic cylinder and the main hydraulic cylinder are all double-acting single-piston rod hydraulic cylinders, the left end of the slitting knife on the upper right part of the auxiliary support seat can be fitted with the right end of the inserting knife on the upper right part of the auxiliary support seat, and the top end of the slitting knife on the lower left part of the auxiliary support seat can be fitted with the bottom end of the inserting knife on the lower left part of the auxiliary support seat.

[0011] Compared with the prior art, the present invention has the following advantages: the present invention can vertically and horizontally cut the earth by controlling the cutting component, and can half-wrap the cut earth by controlling the wrapping component, so as to facilitate mobile transportation, and then control the auxiliary support seat to lift up to form a relatively complete soil block, and when backfilling, the original soil block can be backfilled to the original position, reducing damage to the target earth, ensuring its overall structure is relatively complete, thereby reducing the need for compaction after backfilling, reducing the complexity of construction, and at the same time reducing damage to the soil ecological environment, facilitating soil ecological restoration. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the axonometric structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the top view of the structure when the cable on the upper right part of the auxiliary support seat of the present invention cooperates with the winch drum.

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure at BB of the present invention.

[0015] Figure 4 It is a schematic diagram of the left structure of the inserting knife at the upper right part of the auxiliary support seat of the present invention.

[0016] Figure 5 It is a schematic structural diagram of two inserting knives of the present invention.

[0017] Figure 6 It is a schematic diagram of the cooperation between the housing and the sliding seat of the present invention.

[0018] Figure 7 It is a main schematic diagram of the present invention when it is working.

[0019] In the figure: 1. auxiliary support seat, 2. slitting assembly, 3. wrapping assembly, 4. slitting hydraulic cylinder, 5. slitting knife, 6. wrapping hydraulic cylinder, 7. inserting knife, 8. automatic winding mechanism, 9. jack, 10. latch, 11. coil, 12. knife handle, 13. knife strip, 14. support arm, 15. No. 1 fixed pulley, 16. support frame, 17. No. 2 fixed pulley, 18. No. 3 fixed pulley, 19. servo motor, 20. drum, 21. cable, 22. knife holder, 23. guide, 24. inner shear blade, 25. outer shear blade, 26. knife holder, 27. fastening bolt, 28. pressure plate, 29. support roller, 30. support seat, 31. spring, 32. shell, 33. sliding seat, 34. scraper groove, 35. guide arm, 36. main support seat, 37. main hydraulic cylinder, 38. mounting seat. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1-Figure 7As shown, a soil excavation and filling device for construction includes a secondary support seat 1, a slitting assembly 2, and a wrapping assembly 3. The bottom and right part of the secondary support seat 1 are penetrated, and the slitting assembly 2 and the wrapping assembly 3 are respectively installed on the upper right and lower left parts of the secondary support seat 1. The slitting assembly 2 includes a slitting hydraulic cylinder 4 and a slitting knife 5. The secondary support seat 1 is fixed with a slitting hydraulic cylinder 4, and the end of the piston rod of the slitting hydraulic cylinder 4 is fixed with a slitting knife 5. The wrapping assembly 3 includes a wrapping hydraulic cylinder 6, a inserting knife 7, an automatic winding mechanism 8 and a coil 11. The secondary support seat 1 is fixed with a wrapping hydraulic cylinder 6, and the end of the piston rod of the wrapping hydraulic cylinder 6 is fixed with a inserting knife 7. The slitting hydraulic cylinder 4, the slitting knife 5, the wrapping assembly 3 include a wrapping hydraulic cylinder 6, a inserting knife 7, an automatic winding mechanism 8 and a coil 11. The wrapping hydraulic cylinder 6 and the inserting knife 7 are arranged vertically, and the slitting hydraulic cylinder 4, the slitting knife 5, the wrapping hydraulic cylinder 6 and the inserting knife 7 at the lower left part of the auxiliary support seat 1 are arranged horizontally. The inserting knife 7 at the upper right part of the auxiliary support seat 1 passes through the insertion hole 9 in the left and right directions, and the inserting knife 7 at the lower left part of the auxiliary support seat 1 is fixed with a pin 10 in the left and right directions, and the pin 10 can be inserted with a gap in the insertion hole 9. The automatic winding mechanism 8 is wound with a coil 11, and the axial direction of the winding of the slitting knife 5, the inserting knife 7 and the coil 11 extends along the front-to-back direction. The ends of the two coils 11 in the releasing direction are respectively fastened to the two inserting knives 7 and are located on the inner side of the two inserting knives 7. The slitting hydraulic cylinder 4 and the wrapping hydraulic cylinder 6 are connected to the hydraulic oil circuit of the external hydraulic system.

[0022] The auxiliary support seat 1 is fixed on an external construction device, such as a mechanical arm of an excavator. Initially, the piston rods of the cutting hydraulic cylinder 4 and the wrapping hydraulic cylinder 6 are retracted. When excavating earth (suitable for soil with high viscosity, not suitable for sandy soil), the auxiliary support seat 1 is moved to the upper left of the soil layer, and then the cutting hydraulic cylinder 4 is controlled to extend the piston rod, so that one of the cutting knives 5 cuts the earth downward, and the other cutting knives 5 cuts the earth to the right. After the two cutting knives 5 cut the soil at a right angle, the cutting hydraulic cylinder 4 is controlled to retract the piston rod, and the auxiliary support seat 1 is controlled by external construction devices to move upward and to the left by an appropriate distance until the two inserting knives 7 correspond to the slits left by the cutting knives 5 in the earth, and then the wrapping hydraulic cylinder 6 is controlled to extend the piston rod, so that one of the inserting knives 7 moves downward along the vertical slit, so that the other inserting knives 5 can be moved downward. A blade 7 moves to the right along the horizontal slit until the pin 10 is plugged into the socket 9, and the blade 7 can drag the coil 11 to stretch when moving, so as to achieve the encirclement of the bottom and right ends of the earthwork, and then the auxiliary support seat 1 is lifted and moved by external construction equipment, that is, the target earthwork is excavated, which reduces the damage to the target earthwork and ensures that its overall structure is relatively complete. Then the soil blocks produced by the excavation can be stacked and marked. When stacking, the soil blocks are moved to the top of the target object and kept at a close distance. Then the wrapping hydraulic cylinder 6 is controlled to retract the piston rod to lower the soil blocks. When backfilling is required, the corresponding soil blocks can be selected according to the backfilling position for backfilling. When backfilling, in the initial state, the auxiliary support seat 1 is controlled to move to the upper left of the target soil block, and then the wrapping hydraulic cylinder 6 is controlled to extend the piston rod until the pin 10 is plugged into the socket 9, and the soil blocks are semi-enclosed by the coil 11, and then backfilling can be performed.

[0023] The slitting knife 5 includes a handle 12 and a blade 13. Each of the slitting components 2 includes two slitting hydraulic cylinders 4. The two slitting hydraulic cylinders 4 in the same slitting component 2 form a group. The ends of the piston rods of each group of the slitting hydraulic cylinders 4 are commonly fixed with a handle 12 extending in the front-to-back direction. The handle 12 is hollow inside. A support arm 14 is fixed to the front and back parts of the handle 12. The support arm 14 on the upper right part of the auxiliary support seat 1 is vertically arranged, and the support arm 14 on the lower left part of the auxiliary support seat 1 is horizontally arranged. The support arm 14 is slidably connected to the auxiliary support seat 1. The handle 12 is slidably connected to the blade 13 front and back. The blade part of the blade 13 is serrated. The inner cavity of the support arm 14 is connected to the inner cavity of the auxiliary support seat 1. The front and rear parts of the inner cavity of the auxiliary support seat 1 are each rotatably connected A No. 1 fixed pulley 15 is connected, and the two support arms 14 at the front and rear parts of the knife handle 12 are commonly fixed with a support frame 16, and the front and rear parts of the support frame 16 are rotatably connected with a No. 2 fixed pulley 17 and a No. 3 fixed pulley 18, and a servo motor 19 is fixed in the middle of the support frame 16, and the rotating shaft of the servo motor 19 is rotatably connected to the support frame 16, and a winch 20 is coaxially fixed to the rotating shaft of the servo motor 19, and a cable 21 is spirally wound around the winch 20, and the two ends of the cable 21 are respectively fixed to the front and rear parts of the knife strip 13 after passing through the No. 3 fixed pulley 18, the No. 2 fixed pulley 17, the inner cavity of the support arm 14 and the No. 1 fixed pulley 15, and the servo motor 19 is externally connected to a power supply. When the servo motor 19 is powered on and rotated forward and reversely, it can drive the knife strip 13 to slide back and forth along the knife handle 12 through the cable 21.

[0024] Furthermore, by controlling the servo motor 19 to rotate forward and reverse, the cable 21 can be guided by the No. 3 fixed pulley 18, the No. 2 fixed pulley 17 and the No. 1 fixed pulley 15 to achieve the reciprocating sliding of the knife bar 13 along the knife handle 12, thereby facilitating the knife bar 13 to cut the earth (especially the earth containing plant roots and stems), thereby improving the cutting efficiency. By utilizing the sliding connection between the support arm 14 and the auxiliary support seat 1, the position stability of the slitting knife 5 relative to the auxiliary support seat 1 can be improved, thereby ensuring that the slitting knife 5 can perform slitting work for a long time.

[0025] The slitting assembly 2 also includes a tool holder 22, the tool holder 22 is fixed on the upper left part of the auxiliary support seat 1, and a guide member 23 is installed at the front and rear parts of the tool holder 22. The front and rear parts of the slitting knife 5 at the upper right part of the auxiliary support seat 1 are each hinged with an inner shearing blade 24 on the left and right sides, and the front and rear parts of the slitting knife 5 at the lower left part of the auxiliary support seat 1 are each hinged with an outer shearing blade 25 on the left and right sides. The left part of the inner shearing blade 24 and the left part of the outer shearing blade 25 are respectively inserted with a gap with the guide member 23, and the left part of the inner shearing blade 24 and the left part of the outer shearing blade 25 can swing and slide left and right along the guide member 23.

[0026] Furthermore, when the earth is cut by the slitting knife 5, the slitting knife 5 can drive the inner shear blade 24 and the outer shear blade 25 to be inserted into the earth to shear the front and rear parts thereof, so that when the coil 11 half surrounds the earth and moves upward with the auxiliary support seat 1, the friction resistance between the earth and the earth is smaller (because a gap is formed by shearing), which facilitates lifting and improves the integrity of the earth.

[0027] The inserting knife 7 includes a knife seat 26, a fastening bolt 27 and a pressure plate 28. Each of the wrapping components 3 includes three slitting hydraulic cylinders 4. The three slitting hydraulic cylinders 4 in the same slitting component 2 are a group. The ends of the piston rods of each group of the slitting hydraulic cylinders 4 are commonly fixed with a knife seat 26 extending in the front-to-back direction. The knife seat 26 is threadedly connected with a plurality of fastening bolts 27. The fastening bolts 27 are inserted through and connected with the coil 11. The fastening bolts 27 threadedly connected to the same knife seat 26 are commonly inserted with a pressure plate 28. The pressure plate 28 and the knife seat 26 clamp the coil 11 together. The knife seat 26 on the upper right part of the auxiliary support seat 1 is penetrated by a plurality of jacks 9 in the left-right direction, and the knife seat 26 on the lower left part of the auxiliary support seat 1 is fixed with a plurality of pins 10 in the left-right direction.

[0028] The automatic winding mechanism 8 includes a support roller 29, a support 30, a clockwork spring 31, a shell 32, a sliding seat 33, and a scraping groove 34. The front and rear parts of the support roller 29 are rotatably connected to the support 30, and the support 30 is fixed to the auxiliary support seat 1. The front and rear parts of the support roller 29 are each fixed with a clockwork spring 31. The end of the clockwork spring 31 in the inward winding extension direction is fixed to the support roller 29, and the end of the clockwork spring 31 in the outward winding extension direction is fixed to the support 30. The support roller 29 has a tendency to wind the coil 11 under the action of the elastic force of the clockwork spring 31. The support roller 29 is gap-inserted in the shell 32. The front and rear parts of the shell 32 are fixed to the support 30. The shell 32 is slidably connected with a sliding seat 33. The sliding seat 33 is perpendicular to the axial direction of the support roller 29 in space along the sliding direction of the shell 32. The sliding seat 33 is penetrated by a scraping groove 34. The scraping groove 34 is parallel to the axial direction of the support roller 29 and is inserted into the coil 11.

[0029] When the wrapping hydraulic cylinder 6 is retracted, the coil 11 is wound and stored by the support roller 29 under the elastic force of the clockwork spring 31, and is scraped by the scraping groove 34 at the same time, so as to clean the soil particles adhering to its surface, making it easier to be wound and stored.

[0030] Two guide arms 35 are fixed to the upper left portion of the auxiliary support seat 1, and the two guide arms 35 are arranged at the front and rear parts of the auxiliary support seat 1. A main support seat 36 is installed on the upper left portion of the auxiliary support seat 1, and the main support seat 36 is slidably connected to the guide arms 35. A plurality of main hydraulic cylinders 37 parallel to the guide arms 35 are fixed to the upper left end of the main support seat 36, and the piston rods of the main hydraulic cylinders 37 penetrate the main support seat 36 and are fixed to the auxiliary support seat 1. The main hydraulic cylinders 37 are connected to the hydraulic oil circuit of the external hydraulic system, and when the main hydraulic cylinders 37 extend and retract the piston rod, they can drive the auxiliary support seat 1 to perform reciprocating linear sliding from the upper left to the lower right compared to the main support seat 36. The main support seat 36 is also fixed with a mounting seat 38 connected to external construction equipment.

[0031] Furthermore, the external construction equipment is fastened to the mounting seat 38. At this time, by controlling the main hydraulic cylinder 37 to extend and retract, the auxiliary support seat 1 can be driven to move back and forth from the upper left to the lower right, thereby facilitating the movement of the inserting knife 7 to the slit left by the slitting knife 5, without the need to control the construction equipment to move again, which is convenient for operation.

[0032] The material of the coiled material 11 is nylon cloth or canvas, and the types of the slitting hydraulic cylinder 4, the wrapping hydraulic cylinder 6 and the main hydraulic cylinder 37 are all double-acting single-piston rod hydraulic cylinders. The left end of the slitting knife 5 on the upper right part of the auxiliary support seat 1 can be fitted with the right end of the inserting knife 7 on the upper right part of the auxiliary support seat 1, and the top end of the slitting knife 5 on the lower left part of the auxiliary support seat 1 can be fitted with the bottom end of the inserting knife 7 on the lower left part of the auxiliary support seat 1.

[0033] Furthermore, by fitting the slitting knife 5 with the inserting knife 7, when the soil block is wrapped and moved by the coil 11, the supporting effect of the inserting knife 7 and the piston rod of the wrapping hydraulic cylinder 6 on the soil block can be enhanced and the deformation of the piston rod of the wrapping hydraulic cylinder 6 can be reduced.

[0034] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. An earthwork excavation and filling device for construction, comprising a secondary support seat (1), a slitting assembly (2), and a wrapping assembly (3), wherein the bottom and right portion of the secondary support seat (1) are penetrated, the slitting assembly (2) and the wrapping assembly (3) are respectively installed on the upper right portion and the lower left portion of the secondary support seat (1), the slitting assembly (2) comprises a slitting hydraulic cylinder (4) and a slitting knife (5), the secondary support seat (1) is fixed with the slitting hydraulic cylinder (4), and the end of the piston rod of the slitting hydraulic cylinder (4) is fixed with the slitting knife (5), characterized in that: The wrapping assembly (3) comprises a wrapping hydraulic cylinder (6), a cutting knife (7), an automatic winding mechanism (8) and a coil (11); the auxiliary support seat (1) is fixed with a wrapping hydraulic cylinder (6); the end of the piston rod of the wrapping hydraulic cylinder (6) is fixed with a cutting knife (7); the slitting hydraulic cylinder (4), the slitting knife (5), the wrapping hydraulic cylinder (6) and the cutting knife (7) at the upper right part of the auxiliary support seat (1) are arranged vertically; the slitting hydraulic cylinder (4), the slitting knife (5), the wrapping hydraulic cylinder (6) and the cutting knife (7) at the lower left part of the auxiliary support seat (1) are arranged horizontally; the cutting knife (7) at the upper right part of the auxiliary support seat (1) is arranged horizontally; ) is provided with a socket (9) penetrating in the left-right direction, a knife (7) at the lower left part of the auxiliary support seat (1) is fixed with a latch (10) in the left-right direction, and the latch (10) can be inserted into the socket (9) with a gap, the automatic winding mechanism (8) is wound with a coil (11), the axial direction of the winding of the slitting knife (5), the knife (7) and the coil (11) extends in the front-back direction, the ends of the two coils (11) in the release direction are respectively fastened to the two knifes (7) and are located on the inner side of the two knifes (7), and the slitting hydraulic cylinder (4) and the wrapping hydraulic cylinder (6) are connected to the hydraulic oil circuit of the external hydraulic system.

2. The earthwork excavation and filling device for construction according to claim 1, characterized in that: The slitting knife (5) comprises a knife handle (12) and a knife strip (13). Each of the slitting assemblies (2) comprises two slitting hydraulic cylinders (4). The two slitting hydraulic cylinders (4) in the same slitting assembly (2) form a group. The ends of the piston rods of each group of slitting hydraulic cylinders (4) are commonly fixed with a knife handle (12) extending in the front-to-back direction. The knife handle (12) is hollow inside. Support arms (14) are respectively fixed to the front and rear parts of the knife handle (12) (marked with a dividing line). The support arm (14) at the upper right part of the auxiliary support seat (1) is vertically arranged, and the support arm (14) at the lower left part of the auxiliary support seat (1) is horizontally arranged. The support arm (14) is slidably connected to the auxiliary support seat (1). The knife handle (12) is slidably connected to a knife strip (13) in a front-rear sliding manner. The blade portion of the knife strip (13) is serrated. The inner cavity of the support arm (14) is connected to the inner cavity of the auxiliary support seat (1). The front and rear parts of the inner cavity of the auxiliary support seat (1) are respectively rotated. A first fixed pulley (15) is connected, and two support arms (14) at the front and rear parts of the knife handle (12) are commonly fixed with a support frame (16), and the front and rear parts of the support frame (16) are rotatably connected with a second fixed pulley (17) and a third fixed pulley (18), and a servo motor (19) is fixed in the middle of the support frame (16), and the rotating shaft of the servo motor (19) is rotatably connected to the support frame (16), and the rotating shaft of the servo motor (19) is coaxially fixed with a winch (2 0), the winch (20) is spirally wound with a cable (21), the two ends of the cable (21) are respectively fixed to the front and rear parts of the blade (13) via the third fixed pulley (18), the second fixed pulley (17), the inner cavity of the support arm (14) and the first fixed pulley (15), the servo motor (19) is externally connected to a power supply, and when the servo motor (19) is powered on and rotates forward and reversely, it can drive the blade (13) to slide back and forth along the handle (12) through the cable (21).

3. The earthwork excavation and filling device for construction according to claim 1, characterized in that: The slitting assembly (2) further comprises a knife holder (22), the knife holder (22) being fixed to the upper left portion of the auxiliary support seat (1), the front and rear portions of the knife holder (22) being respectively provided with guide members (23), the front and rear portions of the slitting knife (5) at the upper right portion of the auxiliary support seat (1) being respectively hinged with inner shear blades (24) at left and right sides, and the front and rear portions of the slitting knife (5) at the lower left portion of the auxiliary support seat (1) being respectively hinged with outer shear blades (25) at left and right sides, the left portion of the inner shear blade (24) and the left portion of the outer shear blade (25) being respectively inserted into the guide member (23) with a gap, and the left portion of the inner shear blade (24) and the left portion of the outer shear blade (25) being able to swing and slide left and right along the guide member (23).

4. The earthwork excavation and filling device for construction according to claim 1, characterized in that: The inserting knife (7) comprises a knife seat (26), a fastening bolt (27) and a pressure plate (28). Each of the wrapping assemblies (3) comprises three slitting hydraulic cylinders (4). The three slitting hydraulic cylinders (4) in the same slitting assembly (2) form a group. The ends of the piston rods of each group of slitting hydraulic cylinders (4) are commonly fixed with a knife seat (26) extending in the front-rear direction. The knife seat (26) is threadedly connected with a plurality of fastening bolts (27). The fastening bolts (27) penetrate and plug into the coil (11). The fastening bolts (27) threadedly connected to the knife seat (26) are commonly plugged with a pressure plate (28). The pressure plate (28) and the knife seat (26) jointly clamp the coil (11). The knife seat (26) at the upper right part of the auxiliary support seat (1) penetrates a plurality of insertion holes (9) in the left-right direction. The knife seat (26) at the lower left part of the auxiliary support seat (1) is fixed with a plurality of latches (10) in the left-right direction.

5. The earthwork excavation and filling device for construction according to claim 1, characterized in that: The automatic winding mechanism (8) comprises a support roller (29), a support seat (30), a spring spring (31), a shell (32), a sliding seat (33), and a scraping groove (34); the front and rear parts of the support roller (29) are rotatably connected to the support seat (30); the support seat (30) is fixed to the auxiliary support seat (1); the front and rear parts of the support roller (29) are each fixed with a spring spring (31); the end of the spring spring (31) in the inward winding extension direction is fixed to the support roller (29); the end of the spring spring (31) in the outward winding extension direction is fixed to the support seat (30); The roller (29) has a tendency to wind the coil (11) under the action of the elastic force of the spring (31); the support roller (29) is inserted into the shell (32) with a gap; the front and rear parts of the shell (32) are fixed to the support (30); the shell (32) is slidably connected to a sliding seat (33); the sliding seat (33) is perpendicular to the axial direction of the support roller (29) in space along the sliding direction of the shell (32); a scraping groove (34) passes through the sliding seat (33); the scraping groove (34) is parallel to the axial direction of the support roller (29); and the scraping groove (34) is inserted into the coil (11).

6. The earthwork excavation and filling device for construction according to any one of claims 1 to 5, characterized in that: Two guide arms (35) are fixed to the upper left portion of the secondary support seat (1), and the two guide arms (35) are arranged at the front and rear portions of the secondary support seat (1). A main support seat (36) is installed at the upper left portion of the secondary support seat (1), and the main support seat (36) is slidably connected to the guide arms (35). A plurality of main hydraulic cylinders (37) parallel to the guide arms (35) are fixed to the upper left end of the main support seat (36), and the piston rods of the main hydraulic cylinders (37) penetrate the main support seat (36) and are fixed to the secondary support seat (1). The main hydraulic cylinders (37) are connected to the hydraulic oil circuit of an external hydraulic system. When the piston rod of the main hydraulic cylinder (37) is extended or retracted, the secondary support seat (1) can be driven to perform reciprocating linear sliding from the upper left to the lower right relative to the main support seat (36). The main support seat (36) is also fixed with a mounting seat (38) connected to external construction equipment.

7. The earthwork excavation and filling device for construction according to claim 6, characterized in that: The material of the coiled material (11) is nylon cloth or canvas, the slitting hydraulic cylinder (4), the wrapping hydraulic cylinder (6) and the main hydraulic cylinder (37) are all double-acting single-piston rod hydraulic cylinders, the left end of the slitting knife (5) on the upper right part of the auxiliary support seat (1) can be fitted with the right end of the inserting knife (7) on the upper right part of the auxiliary support seat (1), and the top end of the slitting knife (5) on the lower left part of the auxiliary support seat (1) can be fitted with the bottom end of the inserting knife (7) on the lower left part of the auxiliary support seat (1).

Images