Trench excavation equipment for municipal engineering construction

Abstract

The invention discloses municipal engineering construction groove excavation equipment which comprises a bottom frame, a drill bit assembly, a soil cutting assembly and a soil discharging mechanism, the soil discharging mechanism comprises an adjustable soil discharging frame connected with the bottom frame, the soil discharging frame is obliquely arranged, one end of the soil discharging frame downwards penetrates through the bottom frame, and the other end of the soil discharging frame extends backwards and upwards. The soil discharging frame is provided with a soil discharging conveying belt and a cleaning assembly used for cleaning the soil discharging conveying belt. A soil guiding mechanism is further arranged behind the soil discharging mechanism, and the soil guiding mechanism is installed at the tail of the bottom frame and used for guiding out soil transferred by the soil discharging conveying belt from the two sides of the bottom frame. According to the trench excavation equipment, accumulation or blockage of soil on the soil discharging mechanism and the soil guiding mechanism can be avoided, and soil discharging and soil guiding are smoother and more stable; and meanwhile, after excavation is completed, automatic cleaning of the soil discharging mechanism is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of trench excavation equipment, and in particular to a trench excavation equipment for municipal engineering construction. Background Art

[0002] Trench excavation is a common task in municipal engineering, construction and other engineering projects. Its main purpose is to provide installation space for underground facilities such as pipelines and infrastructure. Municipal engineering construction trench excavation equipment is required during the trench excavation process.

[0003] For example, a trench excavation equipment for municipal engineering construction applied for with patent number 202421632037.1 solves the problems of not being able to quickly dig small trenches in a straight line, not being able to discharge the soil in time after trench excavation, and not being able to maintain the flatness of the trench by setting a drill bit, a base, an adjustment plate, a movable seat, a screw, a cutter, a cylinder, an excavation channel, and a slide.

[0004] When the equipment is working, the excavated trough is used to discharge the soil generated by grooving, but the excavated trough has a certain inclination. As the equipment moves forward, the soil on the excavated trough accumulates more and more, and the soil is easily blocked, which makes the equipment unable to continue the grooving work. In addition, the equipment adjusts the height of the excavated trough by threaded connection of bolts and screw holes. The bolts need to be disassembled before and after adjustment, which makes the height adjustment work extremely troublesome. In addition, the equipment uses a slide to guide the soil discharged from the groove to both sides of the groove. However, in actual use, when the soil is relatively moist, the soil is prone to stickiness when contacting the surface of the slide, resulting in soil accumulation and blockage on the slide, affecting the normal progress of the trench excavation work. At the same time, the equipment is not convenient for cleaning the excavated trough after use, which greatly affects its cleanliness and service life. Summary of the invention

[0005] The purpose of the present invention is to provide a trench excavation device for municipal engineering construction in view of the problems existing in the prior art.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A trench excavation device for municipal engineering construction comprises a movable bottom frame, a drill bit assembly which can be raised and lowered is provided at the front end of the bottom frame, a soil cutting assembly is provided on the bottom frame behind the drill bit assembly, a soil discharge mechanism is provided in the middle of the bottom frame, the soil discharge mechanism comprises an adjustable soil discharge frame connected to the bottom frame, the soil discharge frame is arranged obliquely, one end of the soil discharge frame passes downward through the bottom frame, and the other end extends backward and upward, a soil discharge conveyor belt and a cleaning assembly for cleaning the soil discharge conveyor belt are provided on the soil discharge frame; a soil guide mechanism is also provided at the rear of the soil discharge mechanism, the soil guide mechanism is installed at the tail of the bottom frame, and is used to guide the soil transferred from the soil discharge conveyor belt out of the two sides of the bottom frame.

[0007] The trench excavation equipment for municipal engineering construction improves the soil discharge mechanism and the soil guide mechanism so that the soil in the trench can be better discharged, and the soil is automatically piled on both sides above the trench as the trench is excavated. It can also avoid the accumulation or blockage of soil on the soil discharge mechanism and the soil guide mechanism, making soil discharge and soil guide smoother and more stable; at the same time, it is also convenient for the automatic cleaning of the soil discharge mechanism after the excavation is completed.

[0008] Furthermore, the drill bit assembly includes a mounting platform arranged at the front end of the base frame, a liftable driving plate is provided in the mounting platform, an inclined plate is provided obliquely in front of the driving plate, a plurality of drill bits are provided on the side of the inclined plate facing the ground, a servo motor for driving the drill bit, and a transmission assembly connected to the servo motor and the drill bit are also provided on the inclined plate.

[0009] Furthermore, the inclined plate is a hollow plate, the servo motor is arranged on the outside of the inclined plate and is provided with a motor cover, the transmission assembly is installed inside the inclined plate, the transmission assembly is a gear set or a belt transmission member, and the output end of the servo motor and the connection end of the drill bit are respectively inserted into the inclined plate and connected to the transmission member. In this way, the servo motor and the transmission member can be protected, the failure rate can be reduced, and the stability of the equipment operation can be improved.

[0010] Furthermore, the soil cutting assembly includes a U-shaped support plate vertically fixedly connected to the bottom frame, a cylinder is installed on the top of the U-shaped support plate, a cross plate is horizontally arranged below the U-shaped support plate, the output end of the cylinder passes through the U-shaped support plate and is connected to the cross plate, both ends of the cross plate are rotatably connected to cutting knives through hinges, a threaded barrel is horizontally arranged above the cross plate, one end of the threaded barrel is threadedly plug-connected with an adjusting screw, and the other end of the threaded barrel is rotatably connected to a rotating disk, one side of the rotating disk is rotatably connected to one of the cutter side walls through an adapter block, and the end of the adjusting screw away from the threaded barrel is rotatably connected to the other cutter side wall through an adapter block; cutting knives are respectively connected to both ends of the cross plate, and one side of the two cutters are respectively slidably connected to the inner side of the U-shaped support plate, so as to be able to move downward to cut the soil.

[0011] Furthermore, the soil discharge frame includes an excavation trough inclined in the bottom frame and side mounting rods connected to the excavation trough, both sides of the excavation trough are slidably connected to the inner side wall of the bottom frame, a pair of side mounting rods form an opening behind the excavation trough, the soil discharge conveyor belt connected to the side mounting rods is installed in the opening, the upper surface of the soil discharge conveyor belt is flush with the upper surface of the excavation trough, and the bottom end of the excavation trough is used to contact the bottom surface of the groove; baffles are provided on both sides of the excavation trough and the soil discharge conveyor belt.

[0012] Furthermore, fixed blocks are respectively provided on both sides of the soil discharge frame, and the fixed blocks are located above the bottom frame. A first screw is vertically penetrated through one end of the surface of the fixed block and is threadedly connected thereto, and the bottom end of the first screw is rotatably connected to the surface of the bottom frame, and a first limit rod is vertically penetrated through the other end of the surface of the fixed block and is slidably connected thereto, and the bottom end of the first limit rod is connected to the surface of the bottom frame; the soil discharge frame is connected to the fixed block via a fixed connecting piece or is connected to the fixed block via an adjustable rotating shaft.

[0013] Furthermore, the cleaning assembly includes a U-shaped connecting plate connected to the soil discharge frame and spanning the soil discharge conveyor belt, the top surface of the U-shaped connecting plate is connected to a water pipe, and the water pipe is provided with a plurality of water spray heads, and the top surface of the U-shaped connecting plate is also provided with air pipes in front and behind the water pipe, and the air pipe is provided with a plurality of spray heads.

[0014] Furthermore, the U-shaped connecting plate is a liftable connecting plate, and the bottom frame is also provided with a water tank located below the soil discharge conveyor belt, a water pump is installed at the bottom of the water tank, and the output end of the water pump is connected to the water pipe through a water pipe, and an air pump is also provided above the water tank, and the air pump is connected to the air pipe through an air pipe.

[0015] Furthermore, the soil guiding mechanism includes a U-shaped mounting plate installed across the bottom frame, and a V-shaped slide plate arranged in the U-shaped mounting plate, the soil discharge conveyor belt extends to the top of the V-shaped slide plate, and the V-shaped slide plate is inverted and floatingly installed on the U-shaped mounting plate to form landslides on both sides, and the landslides extend outward from both sides of the U-shaped mounting plate, and the highest point of the V-shaped slide plate does not exceed the upper end surface of the U-shaped mounting plate.

[0016] Furthermore, a vibration motor is installed at the middle end of the bottom surface of the V-shaped skateboard, and multiple buffer springs are respectively connected to the two ends of the bottom surface of the V-shaped skateboard, and the bottom ends of the multiple buffer springs are connected to the inner bottom surface of the U-shaped mounting plate. Vertical rods are respectively provided in the multiple buffer springs, and the top ends of the multiple vertical rods are fixedly connected to the bottom surface of the V-shaped skateboard, and the bottom ends of the multiple vertical rods pass through the bottom surface of the U-shaped mounting plate and extend to the bottom of the bottom frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The trench excavation equipment for municipal engineering construction can better discharge the soil in the trench by improving the soil discharge mechanism and the soil guide mechanism, so that the soil is automatically piled on both sides above the trench as the trench is excavated, and the accumulation or blockage of the soil on the soil discharge mechanism and the soil guide mechanism can be avoided, and the soil discharge and soil guide are smoother and more stable; 2. The drill bit assembly is used for trenching, loosening and turning up the soil in the trench to be excavated, so that the subsequent soil discharge mechanism can transport the loose soil to the rear; the two sides of the bottom frame are provided with shift The driving wheel can move along both sides of the groove, and when the bottom frame moves forward, it can drive the soil discharge mechanism to shovel the soil onto the soil discharge conveyor belt; the soil cutting assembly can cut the soil and form a flat inner wall inside the groove, reducing the subsequent work of tidying up the groove; 3. The soil discharge mechanism is installed on the bottom frame through the soil discharge frame, and it can adjust the height position and inclination angle of the soil discharge frame according to the required height or angle, that is, adjust the height position and angle position of the soil discharge conveyor belt, on the one hand, it can allow the soil discharge mechanism to dig trenches with different depth requirements The groove improves its application scope and versatility. On the other hand, it can change the soil discharge angle according to the terrain, which is conducive to stable excavation; 4. The arrangement of the cleaning component facilitates the cleaning of the soil discharge conveyor belt, thereby improving its cleanliness and service life; the jet head is arranged in front of the water spray head, which can first clean the floating dust and loose soil on the soil discharge conveyor belt, blow it off and then spray water to rinse it, so as to avoid a large amount of sludge and sewage caused by direct use of water for spraying, which can save water and improve the quality of cleaning; the jet head is arranged behind the water spray head, which can be After water spray cleaning, the soil discharge conveyor belt is blown dry to reduce residual water stains; 5. The inclined plate is made into a hollow plate to accommodate the transmission assembly, which can better protect the transmission assembly. The servo motor is also provided with a motor cover to protect the motor, which can avoid the influence of dirt, dust, etc. on the driving components and transmission components, reduce the failure rate, and improve the stability of equipment operation; 6. The use of this suspended inverted V-shaped slide plate is conducive to cushioning the soil falling from the soil discharge conveyor belt and reducing the impact of the soil. At the same time, the cushioning can also reduce the kinetic energy of the soil and avoid soil splashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of a trench excavation device for municipal engineering construction according to the present invention; Figure 2 It is a schematic diagram of arranging a transmission member inside the hollow inclined plate of the present invention; Figure 3 It is a schematic diagram of the structure of the soil cutting assembly of the present invention; Figure 4It is a schematic diagram of the connection structure of the soil discharge frame and the soil discharge conveyor belt thereon of the present invention; Figure 5 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 6 It is a structural schematic diagram of another cleaning assembly of the present invention; Figure 7 It is a schematic cross-sectional structure diagram of another cleaning assembly of the present invention; Figure 8 It is a structural schematic diagram of the water storage tank of the present invention; Fig. 9 It is a structural schematic diagram of the soil guiding mechanism of the present invention; Fig.10 It is a schematic diagram of the internal structure of the soil guiding mechanism of the present invention; Fig.11 It is a schematic diagram of the threaded barrel connection structure of the present invention; In the figure: 1, bottom frame; 2, drill bit; 3, soil discharge mechanism; 4, lifting assembly; 5, soil guide mechanism; 6, soil cutting assembly; 7, cleaning assembly; 8, soil discharge channel; 9, opening; 10, soil discharge conveyor belt; 11, baffle; 12, moving wheel; 13, fixed block; 14, first screw; 15, first limit rod; 16, U-shaped support plate; 17, cylinder; 18, horizontal plate; 19, cutter; 20, mounting table; 21, inclined plate; 22, servo motor; 23, gear; 24, drive plate; 25, slide ; 26. Second screw rod; 27. Second limiting rod; 28. U-shaped mounting plate; 29. ​​V-shaped slide plate; 30. Vibration motor; 31. Vertical rod; 32. Buffer spring; 33. U-shaped connecting plate; 34. Water pipe; 35. Water spray head; 36. Water storage tank; 37. Water pump; 38. Water inlet; 39. Air pipe; 40. Water spray head; 41. First scraper; 42. Second scraper; 43. Support roller; 44. Air pump; 45. Third scraper; 46. Adjusting screw rod; 47. Threaded barrel; 48. Rotating disk. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] like Figure 1 As shown, a trench excavation equipment for municipal engineering construction comprises a movable base frame 1, a drill bit assembly which can be raised and lowered is provided at the front end of the base frame 1, a soil cutting assembly 6 is provided on the base frame 1 behind the drill bit assembly, a soil discharge mechanism 3 is provided in the middle of the base frame 1, the soil discharge mechanism 3 comprises an adjustable soil discharge frame connected to the base frame 1, the soil discharge frame is arranged obliquely, one end of the soil discharge frame passes downward through the base frame 1, and the other end extends backward and upward, a soil discharge conveyor belt 10 and a cleaning assembly for cleaning the soil discharge conveyor belt 10 are provided on the soil discharge frame; a soil guide mechanism 5 is also provided at the rear of the soil discharge mechanism 3, the soil guide mechanism 5 is installed at the tail of the base frame 1, and is used to guide the soil transferred from the soil discharge conveyor belt 10 from both sides of the base frame 1.

[0022] The trench excavation equipment for municipal engineering construction improves the soil discharge mechanism 3 and the soil guide mechanism 5 so that the soil in the trench can be better discharged, and the soil is automatically piled on both sides above the trench as the trench is excavated. It can also avoid the accumulation or blockage of soil on the soil discharge mechanism and the soil guide mechanism, making the soil discharge and soil guide smoother and more stable; at the same time, it is also convenient for the automatic cleaning of the soil discharge mechanism after the excavation is completed.

[0023] The drill assembly is used to dig trenches, loosen and turn up the soil in the trench to be excavated, so that the subsequent soil discharge mechanism can transport the loose soil to the rear; the two sides of the bottom frame 1 are provided with moving wheels 12, which can move along the two sides of the trench, and when the bottom frame 1 moves forward, it can drive the soil discharge mechanism 3 to shovel the soil onto the soil discharge conveyor belt 10. The soil cutting assembly 6 can cut off the soil and form a flat inner wall inside the trench, reducing the subsequent work of tidying up the trench.

[0024] The soil discharge mechanism 3 is installed on the bottom frame 1 through the soil discharge frame. It can adjust the height position and the inclination angle of the soil discharge frame according to the required height or angle, that is, adjust the height position and the angle position of the soil discharge conveyor belt 10. On the one hand, it can enable the soil discharge mechanism 3 to dig trenches with different depth requirements, thereby improving its scope of application and versatility. On the other hand, it can change the soil discharge angle according to the terrain, which is conducive to stable excavation.

[0025] The arrangement of the cleaning assembly facilitates flushing of the soil discharge conveyor belt 10, thereby improving its cleanliness and service life, avoiding the problem of soil adhering to it and becoming hard to fall off, thus causing damage to the conveyor belt, and also reducing the burden on the soil discharge conveyor belt when it is used next time.

[0026] Furthermore, the drill bit assembly includes a mounting platform 20 arranged at the front end of the base frame 1, a liftable driving plate 24 is provided in the mounting platform 20, an inclined plate 21 is provided obliquely in front of the driving plate 24, a plurality of drill bits 2 are provided on the side of the inclined plate 21 facing the ground, a servo motor 22 for driving the drill bit, and a transmission assembly connected to the servo motor 22 and the drill bit 2 are also provided on the inclined plate 21.

[0027] The driving plate 24 can be raised and lowered and adjusted in position within the mounting platform 20. On the one hand, it allows the drill bit 2 to dig soil at different heights within the groove section, and on the other hand, it can also adjust the position of the drill bit 2 according to the groove depth requirements; the driving plate 24 can be electrically driven or manually adjusted.

[0028] Specifically, a slide groove 25 is provided on one side of the mounting platform 20 at a position relative to the driving plate 24, one end of the driving plate 24 is slidably connected to the slide groove 25, a second screw rod 26 vertically penetrates and is threadedly connected to one end of the driving plate 24 located in the slide groove 25, the bottom end of the second screw rod 26 is rotatably connected to the inner bottom surface of the slide groove 25, the top end of the second screw rod 26 penetrates the top surface of the mounting platform 20 and extends to the top of the mounting platform 20, a second limiting rod 27 is vertically fixedly connected to the surface of the driving plate 24 and is located on one side of the second screw rod 26, the top end of the second limiting rod 27 penetrates the top surface of the mounting platform 20 and extends to the top of the mounting platform 20, the driving plate 24 is raised and lowered by rotating the second screw rod 26, that is, the drill bit 2 is controlled to be raised and lowered, so as to facilitate the adjustment of the depth of a single trenching according to the hardness of the soil, and also to reduce the wear and workload of the drill bit 2.

[0029] Further, combined with Figure 2As shown, the inclined plate 21 is a hollow plate, the servo motor 22 is arranged on the outside of the inclined plate 21 and is provided with a motor cover, the transmission assembly is installed inside the inclined plate 21, the transmission assembly is a gear set or a belt transmission member, and the output end of the servo motor 22 and the connecting end of the drill bit 2 are respectively inserted into the inclined plate and connected to the transmission member.

[0030] The inclined plate 21 is made into a hollow plate to accommodate the transmission component, which can better protect the transmission component. The servo motor 22 is also provided with a motor cover to protect the motor. Such a setting can prevent the influence of mud, dust, etc. on the driving components and transmission components, reduce the failure rate, and improve the stability of equipment operation.

[0031] Specifically, the inclined plate 21 is obliquely fixedly connected to one end of the top surface of the driving plate 24, two gears 23 are rotatably installed inside the inclined plate 21, the two gears 23 are meshed and connected, the connecting shafts of the two drill bits 2 are respectively fixedly connected to the shafts of the two gears 23, the servo motor 22 is installed on the top surface of the inclined plate 21 and is located above one of the gears 23, and the output end of the servo motor 22 is fixedly connected to one of the gears 23.

[0032] Further, combined with Figure 3 As shown, the soil cutting assembly includes a U-shaped support plate 16 vertically fixedly connected to the bottom frame 1, a cylinder 17 is installed on the top of the U-shaped support plate 16, a horizontal plate 18 is horizontally arranged below the U-shaped support plate 16, the output end of the cylinder 17 passes through the U-shaped support plate 16 and is connected to the horizontal plate 18, and cutters 19 are respectively hinged at both ends of the horizontal plate 18, and one side of the two cutters 19 is respectively slidably connected to the inner side of the U-shaped support plate 16. The cutters 19 can be provided with cutting edges at the bottom and the front side, respectively, so as to cut the soil downwards and also to cut the soil in front while moving forward.

[0033] In some embodiments, the cylinder 17 is vertically mounted on the top of the bottom frame 16, and the horizontal plate 18 is horizontally arranged below the U-shaped support plate 16. The output end of the cylinder 17 passes through the top surface of the U-shaped support plate 16 and is fixedly connected to the top surface of the horizontal plate 18. Both ends of the horizontal plate 18 are rotatably connected to the cutter 19 through a hinge. Fig.11As shown, a threaded barrel 40 is horizontally arranged above the horizontal plate 18, one end of the threaded barrel 40 is threadedly connected to an adjusting screw 46, and the other end of the threaded barrel 47 is rotatably connected to a rotating disk 48, one side of the rotating disk 48 is rotatably connected to the side wall of one of the cutters 19 through a switching block, and the end of the adjusting screw 46 away from the threaded barrel 47 is rotatably connected to the side wall of the other cutter 19 through a switching block, and the two cutters 19 are driven by the cylinder 17 to move up and down, so that the two cutters 19 can be adjusted according to the depth of the groove so that they can cut both sides of the groove, and at the same time, by rotating the threaded barrel 46, the inclination of the two cutters 19 can be adjusted, so that they can be cut into slopes of specified inclination according to the actual needs of the groove.

[0034] Further, combined with Figure 4 As shown, the soil discharge frame includes an excavation trough 8 inclinedly arranged in the bottom frame 1 and a side mounting rod connected to the excavation trough 8. Both sides of the excavation trough 8 are slidably connected to the inner side wall of the bottom frame 1. A pair of side mounting rods form an opening 9 behind the excavation trough 8. The soil discharge conveyor belt 10 connected to the side mounting rods is installed in the opening 9. The upper surface of the soil discharge conveyor belt 10 is flush with the upper surface of the excavation trough 8, and the bottom end of the excavation trough 8 is used to contact the bottom surface of the groove; baffles 11 are provided on both sides of the excavation trough 8 and the soil discharge conveyor belt 10.

[0035] The soil discharge frame formed by the excavation trough 8 and the side mounting rods is convenient for installation on the bottom frame 1, and can also allow the excavation trough 8 to contact the bottom surface of the groove, and can also use the opening formed by a pair of side mounting rods to connect and install the soil discharge conveyor belt 10. The soil discharge conveyor belt 10 is convenient for conveying the soil on the excavation trough 8 upward, thereby improving the stability of soil discharge.

[0036] Furthermore, lifting assemblies 4 are respectively provided on both sides of the soil discharge frame, and the lifting assemblies 4 include a fixed block 13, and the fixed block 13 is located above the bottom frame 1. One end of the surface of the fixed block 13 is vertically penetrated by a first screw rod 14 threadedly connected, and the bottom end of the first screw rod 14 is rotatably connected to the surface of the bottom frame 1, and the other end of the surface of the fixed block 13 is vertically penetrated by a first limit rod 15 slidably connected, and the bottom end of the first limit rod 15 is connected to the surface of the bottom frame 1.

[0037] Specifically, by rotating the first screw rod 14, the lifting and lowering of the soil discharge frame and the height adjustment of the excavation channel 8 are facilitated, so that the bottom of the excavation channel 8 is always in contact with the bottom of the trench.

[0038] In some embodiments, the soil removal frame is connected to the fixed block 13 via an adjustable rotating shaft, so that the soil removal frame can adjust the inclination angle.

[0039] Further, combined with Figure 5 and Figure 6 As shown, the cleaning assembly 7 includes a U-shaped connecting plate 33 connected to the soil discharge frame and spanning the soil discharge conveyor belt 10, the top surface of the U-shaped connecting plate 33 is connected to a water pipe 34, and a plurality of water spray heads 35 are provided on the water pipe 34. The top surface of the U-shaped connecting plate 33 is also provided with air pipes 39 in front and behind the water pipe 34, and a plurality of spray heads 40 are provided on the air pipe 39.

[0040] After completing the trench excavation, the soil discharge conveyor belt 10 can be cleaned by using the jet head 40 and the water spray head 35. The jet head 40 is arranged in front of the water spray head 35, so that the floating dust and loose soil on the soil discharge conveyor belt 10 can be cleaned first, and then the dust and loose soil are blown off and then rinsed with water. This can avoid a large amount of sludge and sewage caused by direct use of water for spraying, which can save water and improve the cleaning quality. The jet head 40 is arranged behind the water spray head 35, so that the soil discharge conveyor belt 10 can be dried after water spraying to reduce residual water stains.

[0041] In some embodiments, in combination Figure 7 As shown, several scrapers can also be arranged below the U-shaped connecting plate 33. Several front row jet heads, a first scraper 41, several water spray heads 35, a second scraper 42 and a rear row jet head are arranged in sequence from front to back below the U-shaped connecting plate 33. After such arrangement, when cleaning, the front row jet head 40 first blows and cleans the soil discharge conveyor belt 10, and then the first scraper 41 scrapes off (loosens) the stubborn or hardened soil adhering to the soil discharge conveyor belt 10, and then the water spray head 35 rinses the soil discharge conveyor belt 10, so that the rinse is relatively clean. The second scraper 42 is used to scrape the rinsed water from the soil discharge conveyor belt, on the one hand, to prevent the water from following the conveyor belt backward, and on the other hand, to prevent the water from splashing to the rear when the water spray head is rinsed, which plays a shielding role. Finally, the rear row jet heads are used to blow dry, but it is not necessarily completely dry. The front and rear rows of jet heads are controlled separately, and the jet operation is not performed at the same time. For the soil discharge conveyor belt, it is running during cleaning, so that the entire belt surface can be cleaned and then blown dry.

[0042] In some embodiments, a support roller 43 is further provided on the inner side of the soil discharge conveyor belt 10, and the two ends of the support roller 43 are respectively connected to the side mounting rods of the soil discharge frame, and the support roller 43 is provided for the two scrapers respectively. The support roller 43 may not abut against the inner surface of the soil discharge conveyor belt under normal circumstances. When it is being cleaned, the support roller 43 can support the soil discharge conveyor belt 10 when the first scraper 41 and the second scraper 42 are pressed down, which helps the soil discharge conveyor belt 10 to bear force, and allows the scrapers to scrape off the attached dirt on it.

[0043] In some embodiments, the first scraper is a rubber scraper or a rubber brush, and the second scraper is a rubber scraper.

[0044] Furthermore, the U-shaped connecting plate 33 is a liftable connecting plate, and its two side plates are lifting plates, which can adjust the distance between it and the soil discharge conveyor belt 10. When excavating and discharging soil, the U-shaped connecting plate 33 can be raised so that the soil passes under it. When cleaning, the U-shaped connecting plate 33 can be lowered so that the water spray head, air jet head and scraper are close to the soil discharge conveyor belt for cleaning.

[0045] The bottom frame 1 is also provided with a water storage tank 36 located below the soil discharge conveyor belt 10. Figure 8 As shown, a water pump 37 is installed at the bottom of the water storage tank 36, and the output end of the water pump 37 is connected to the water guide pipe 34 through a water pipe. An air pump 44 is also provided above the water storage tank 36, and the air pump 44 is connected to the air guide pipe 39 through an air pipe. A water inlet 38 is opened at one end of the top surface of the water storage tank 36, and the water inlet 38 is used to add water to the water storage tank 36 conveniently.

[0046] Further, combined with Fig. 9 and Fig.10 As shown, the soil guiding mechanism 5 includes a U-shaped mounting plate 28 installed across the bottom frame 1, and a V-shaped slide plate 29 arranged in the U-shaped mounting plate 28, the soil discharge conveyor belt 10 extends to the top of the V-shaped slide plate 29, and the V-shaped slide plate 29 is inverted and floatingly installed on the U-shaped mounting plate 28 to form landslides on both sides, and the landslides extend outward from both sides of the U-shaped mounting plate 28. The highest point of the V-shaped slide plate 29 does not exceed the upper end surface of the U-shaped mounting plate 28 to prevent the soil thereon from falling into the excavated groove.

[0047] The use of the suspended inverted V-shaped slide plate 29 is helpful to cushion the soil falling from the soil discharge conveyor belt and reduce the impact of the soil. At the same time, the cushioning can also reduce the kinetic energy of the soil and avoid splashing of the soil.

[0048] Furthermore, a vibration motor 30 is installed at the middle end of the bottom surface of the V-shaped slide plate 29, and multiple buffer springs 32 are vertically fixedly connected to the two ends of the bottom surface of the V-shaped slide plate 29. The bottom ends of the multiple buffer springs 32 are fixedly connected to the inner bottom surface of the U-shaped mounting plate 28. Multiple vertical rods 31 are respectively vertically arranged in multiple buffer springs 32, and the top ends of the multiple vertical rods 31 are fixedly connected to the bottom surface of the V-shaped slide plate 29. The bottom ends of the multiple vertical rods 31 penetrate the bottom surface of the U-shaped mounting plate 28 and extend to the bottom of the U-shaped mounting plate 28. By arranging a vibration motor 30 in conjunction with multiple buffer springs 32, the V-shaped slide plate 29 can be vibrated, which is beneficial to the sliding and discharge of soil, and can also prevent moist soil from sticking to its surface to avoid affecting the normal discharge of soil. At the same time, this structure can also form a better buffer.

[0049] In some embodiments, the U-shaped mounting plate 28 is further provided with a third scraper 45 on the side wall close to the soil discharge conveyor belt 10 (see Figure 4 ), the third scraper 45 is close to or abuts against the return soil discharge conveyor belt 10, and the third scraper 45 is arranged obliquely and has a slide structure; the purpose of this arrangement is to scrape off the soil adhering to the soil discharge conveyor belt 10, so that the return soil discharge conveyor belt 10 does not bring the soil back, and at the same time it can also form a shield there to prevent the soil discharge conveyor belt 10 from throwing soil into the trench just dug below it during the turning process, thereby greatly protecting the results of trench excavation.

[0050] A method of using the trench excavation equipment for municipal engineering construction is as follows: first, confirm the position, depth and other relevant parameters of the trench according to the design drawings, then mark the starting point, end point and boundary of the trench on site according to the design drawings, and mark the boundary and center line of the trench on the ground with spray paint or other marking materials, and remove the surface soil, turf, gravel and other debris, then move the equipment to the starting point of the trench, and then make the two drill bits 2 contact the soil where the trench needs to be excavated. When the servo motor 22 drives the drill bit 2 connected to it to rotate, under the mutual meshing transmission of the two gears 23, the other drill bit 2 also rotates in the opposite direction, and the drill bit 2 is tilted toward the trenching direction. When the two drill bits 2 rotate, a pit is dug, and as the bottom frame 1 moves forward, continuous trench excavation operations can be achieved. During the excavation process, a layered excavation method is adopted to reduce the risk of collapse and maintain the stability of the trench; As the bottom frame 1 moves forward, the soil generated by trench excavation will gradually accumulate on the excavation channel 8, and the soil discharge conveyor belt 10 will be started to work. The soil discharge conveyor belt 10 is driven by a motor arranged on one side. During the operation of the soil discharge conveyor belt 10, the soil on the excavation channel 8 will be gradually transported upward, and then fall onto the surface of the V-shaped slide plate 29; The slope on the V-shaped slide plate 29 facilitates the soil to be guided to both sides of the groove. When the V-shaped slide plate 29 guides the soil, the vibration motor 30 is started to work. The vibration motor 30 drives the V-shaped slide plate 29 to vibrate, so as to prevent the relatively wet soil from sticking to the surface of the V-shaped slide plate 29 and affecting the normal discharge of the soil. During the excavation process, the depth of the groove is measured regularly to ensure that it meets the design requirements. By rotating the second screw 26, the driving plate 24 drives the two drill bits 2 to move up and down, so as to adjust the depth of a single excavation according to the hardness of the soil, thereby avoiding increasing the wear and workload of the drill bit 2. If the excavation depth is large or the soil is loose during the excavation process, a supporting structure such as a supporting pile or a steel plate wall should be set to ensure the stability of the slope. By rotating the first screw 14, the height of the excavation channel 8 can be adjusted according to the height of the drill bit 2, so as to ensure that the bottom end of the excavation channel 8 is always flush with the bottom of the trench, thereby improving the efficiency of soil cleaning. During the trenching process, the cylinder 17 drives the two cutters 19 to move up and down through the cross plate 18 until the bottom ends of the two cutters 19 are close to the bottom of the trench. Then, as the device moves forward, the two cutters 19 cut the soil on both sides of the trench to form a flat surface. The threaded cylinder 40 is rotated and threadedly connected with the adjusting screw 39 through the threaded cylinder 40, so that the inclination of the two cutters 19 can be adjusted according to the inclination of the trench slope. After the trenching is completed, the bottom of the trench is leveled mechanically or manually to prepare for subsequent work. When the equipment is not in use, the air pump 44 is started, and multiple jet heads 40 blow air toward the surface of the soil discharge conveyor belt 10, and then the water pump 37 is started to work. The water pump 37 guides the water in the water tank 36 into the water pipe 34 through a water pipe, and then sprays it toward the surface of the soil discharge conveyor belt 10 through multiple water spray heads 35, so as to facilitate the flushing of the surface of the soil discharge conveyor belt 10 and the surface of the excavation trough 8, thereby greatly improving its cleanliness and service life. During the flushing process, the motor is continued to be started to drive the soil discharge conveyor belt 10 to work, thereby improving the comprehensiveness of the flushing of the surface of the soil discharge conveyor belt 10.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A trench excavation device for municipal engineering construction, comprising a movable bottom frame, a drill assembly that can be raised and lowered is provided at the front end of the bottom frame, and a soil cutting assembly is provided on the bottom frame behind the drill assembly, characterized in that: A soil discharge mechanism is provided in the middle of the bottom frame, and the soil discharge mechanism includes an adjustable soil discharge frame connected to the bottom frame, the soil discharge frame is arranged obliquely, one end of the soil discharge frame passes downward through the bottom frame, and the other end extends rearward and upward, and a soil discharge conveyor belt and a cleaning component for cleaning the soil discharge conveyor belt are provided on the soil discharge frame; a soil guide mechanism is also provided at the rear of the soil discharge mechanism, and the soil guide mechanism is installed at the tail of the bottom frame, and is used to guide the soil transferred from the soil discharge conveyor belt from both sides of the bottom frame.

2. The municipal engineering construction trench excavation equipment according to claim 1, characterized in that: The drill bit assembly includes a mounting platform arranged at the front end of the bottom frame, a liftable driving plate is provided inside the mounting platform, an inclined plate is provided obliquely in front of the driving plate, a plurality of drill bits are provided on the side of the inclined plate facing the ground, a servo motor for driving the drill bit is also provided on the inclined plate, and a transmission assembly connected to the servo motor and the drill bit.

3. The municipal engineering construction trench excavation equipment according to claim 2, characterized in that: The inclined plate is a hollow plate, the servo motor is arranged on the outside of the inclined plate and is provided with a motor cover, the transmission assembly is installed inside the inclined plate, the transmission assembly is a gear set or a belt transmission member, and the output end of the servo motor and the connecting end of the drill bit are respectively inserted into the inclined plate and connected to the transmission member.

4. The municipal engineering construction trench excavation equipment according to claim 1, characterized in that: The soil cutting assembly includes a U-shaped support plate vertically fixedly connected to the bottom frame, a cylinder is installed on the top of the U-shaped support plate, a cross plate is horizontally arranged below the U-shaped support plate, the output end of the cylinder passes through the U-shaped support plate and is connected to the cross plate, both ends of the cross plate are respectively connected to cutting knives, one side of the two cutting knives are respectively slidably connected to the inner side of the U-shaped support plate; both ends of the cross plate are rotatably connected to the cutting knives through hinges, a threaded barrel is horizontally arranged above the cross plate, one end of the threaded barrel is threadedly plug-connected with an adjusting screw, and the other end of the threaded barrel is rotatably connected to a rotating disk, one side of the rotating disk is rotatably connected to one of the cutter side walls through a conversion block, and the end of the adjusting screw away from the threaded barrel is rotatably connected to the other cutter side wall through a conversion block.

5. The municipal engineering construction trench excavation equipment according to claim 1, characterized in that: The soil discharge frame includes an excavation trough inclined in the bottom frame and side mounting rods connected to the excavation trough, both sides of the excavation trough are slidably connected to the inner side wall of the bottom frame, a pair of side mounting rods form an opening behind the excavation trough, the soil discharge conveyor belt connected to the side mounting rods is installed in the opening, the upper surface of the soil discharge conveyor belt is flush with the upper surface of the excavation trough, and the bottom end of the excavation trough is used to contact the bottom surface of the groove; baffles are provided on both sides of the excavation trough and the soil discharge conveyor belt.

6. The municipal engineering construction trench excavation equipment according to claim 1, characterized in that: Fixed blocks are respectively provided on both sides of the soil discharge frame, and the fixed blocks are located above the bottom frame. A first screw is vertically penetrated through one end of the surface of the fixed block and is threadedly connected thereto. The bottom end of the first screw is rotatably connected to the surface of the bottom frame, and a first limit rod is vertically penetrated through the other end of the surface of the fixed block and is slidably connected thereto. The bottom end of the first limit rod is connected to the surface of the bottom frame. The soil discharge frame is connected to the fixed block via a fixed connecting piece or via an adjustable rotating shaft.

7. The municipal engineering construction trench excavation equipment according to claim 1, characterized in that: The cleaning assembly includes a U-shaped connecting plate connected to the soil discharge frame and spanning the soil discharge conveyor belt. The top inner surface of the U-shaped connecting plate is connected to a water pipe, and a plurality of water spray heads are provided on the water pipe. The top inner surface of the U-shaped connecting plate is also provided with air pipes in front and behind the water pipe, and a plurality of spray heads are provided on the air pipe.

8. The municipal engineering construction trench excavation equipment according to claim 7, characterized in that: The U-shaped connecting plate is a liftable connecting plate. The bottom frame is also provided with a water tank located below the soil discharge conveyor belt. A water pump is installed at the bottom of the water tank. The output end of the water pump is connected to the water pipe through a water pipe. An air pump is also provided above the water tank, and the air pump is connected to the air pipe through an air pipe.

9. The municipal engineering construction trench excavation equipment according to claim 1, characterized in that: The soil guiding mechanism includes a U-shaped mounting plate installed across the bottom frame, and a V-shaped slide plate arranged in the U-shaped mounting plate. The soil discharge conveyor belt extends to the top of the V-shaped slide plate. The V-shaped slide plate is inverted and floatingly installed on the U-shaped mounting plate to form landslides on both sides. The landslides extend outward from both sides of the U-shaped mounting plate, and the highest point of the V-shaped slide plate does not exceed the upper end surface of the U-shaped mounting plate.

10. The municipal engineering construction trench excavation equipment according to claim 9, characterized in that: A vibration motor is installed at the middle end of the bottom surface of the V-shaped skateboard, and multiple buffer springs are respectively connected to the two ends of the bottom surface of the V-shaped skateboard, and the bottom ends of the multiple buffer springs are connected to the inner bottom surface of the U-shaped mounting plate. Vertical rods are respectively arranged in the multiple buffer springs, and the top ends of the multiple vertical rods are fixedly connected to the bottom surface of the V-shaped skateboard, and the bottom ends of the multiple vertical rods penetrate the bottom surface of the U-shaped mounting plate and extend to the bottom of the bottom frame.

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