A portable shallow foundation pit excavation device

Abstract

The present invention belongs to the field of foundation pit excavation, and specifically discloses a portable shallow foundation pit excavation device, including a conveyor belt type horizontal excavation mechanism, an adaptive opening and closing soil unloading mechanism, an intrusion control mechanism and a mobile travel mechanism; the conveyor belt type horizontal excavation mechanism is arranged on the intrusion control mechanism, the intrusion control mechanism is arranged on the mobile travel mechanism, and the adaptive opening and closing soil unloading mechanism is arranged on the conveyor belt type horizontal excavation mechanism. The present invention can excavate a small amount of soil from the bottom but continuously, and automatically complete the unloading at the top through the elastic excavation components and the unfolding unloading components arranged along the conveyor belt body array, and can avoid the adhesion and residue of soil through automatic opening and local vibration. Without relying on any electric control system, the technical effect of automatic excavation and unloading is achieved only through a clever mechanical structure.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit excavation, and in particular refers to a portable shallow foundation pit excavation device. Background Art

[0002] Communication base stations are generally installed on one or more foundations, depending on their size and form. Such foundations are made of poured concrete. In order to improve the stability of the foundation, a shallow foundation pit is usually dug on the ground first, and a part of the concrete foundation is placed in the soil and then buried, so as to improve the stability of the installed communication equipment relative to the ground.

[0003] Communication base stations are generally scattered and located in unpaved areas, such as hillsides. Therefore, it is inconvenient for ordinary excavators and other construction machinery to enter. Even small and inefficient excavators are very difficult to carry. Therefore, the frequent transportation of excavation equipment on rugged roads faces great difficulties. Summary of the invention

[0004] In view of the above situation, in order to take into account both portability and excavation efficiency, the present invention focuses on proposing a portable shallow foundation pit excavation device. This device is easy to install and disassemble, has a small storage volume, is very easy to carry, and is very suitable for base station foundation pit excavation, which requires frequent transportation on unpaved roads; this solution can remove a small amount of soil from the bottom but continuously, and automatically complete the unloading at the top through the elastic excavation components and unfolding unloading components arranged along the conveyor belt body array, and can avoid soil adhesion and residue through automatic opening and local vibration. Without relying on any electronic control system, the technical effect of automatic excavation and unloading is achieved only through a clever mechanical structure.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a portable shallow foundation pit excavation device, including a conveyor belt type horizontal excavation mechanism, an adaptive opening and closing soil unloading mechanism, an intrusion control mechanism and a mobile traveling mechanism, the conveyor belt type horizontal excavation mechanism is arranged on the intrusion control mechanism, the intrusion control mechanism is arranged on the mobile traveling mechanism, and the adaptive opening and closing soil unloading mechanism is arranged on the conveyor belt type horizontal excavation mechanism.

[0006] This device is specially used for excavating shallow small foundation pits. Compared with excavators of the same size, it has high efficiency and good foundation pit flatness. In addition, since this device is small in size and easy to disassemble, it is convenient to transport on unpaved roads and for frequent transportation.

[0007] Furthermore, the conveyor belt type horizontal excavation mechanism includes a depth gear adjustment component and a conveyor belt component. The depth gear adjustment component is rotatably arranged on the frame component, and the conveyor belt component is arranged on the depth gear adjustment component.

[0008] Preferably, the depth gear adjustment assembly includes a swing bracket, a gear locking block and a locking block spring, the swing bracket is provided with a bracket slide slot, the swing bracket can slide and rotate on the rotating cross bar one through the bracket slide slot, the two ends of the swing bracket are provided with end forks, the side array of the swing bracket is provided with a gear boss, the gear locking block is provided with a center circular hole, the gear locking block can rotate and slide on the rotating cross bar one through the center circular hole, the locking block spring is arranged between the gear locking block and the frame-type main body frame, the gear locking block is also provided with a locking hole that cooperates with the gear boss, and the locking hole can change the height of the swing bracket relative to the frame-type main body frame when it is engaged with different gear bosses.

[0009] By presetting the height of the swing bracket and controlling the angle during excavation, the excavation depth can be flexibly controlled. Since the adjustment ranges of the height preset and the angle control overlap, when there is a deviation from the preset, it can be remedied by angle control without having to stop the machine for adjustment again.

[0010] By switching different gear bosses and engaging the gear locking blocks, the height of the swing bracket relative to the frame-type main frame can be preset, thereby adjusting and controlling the maximum excavation depth. Based on this height, the angle of the swing bracket can be flexibly changed through the electric cylinder assembly, so that the foundation pit can be excavated layer by layer from shallow to deep.

[0011] As a further preferred embodiment of the present invention, the conveyor belt assembly includes a driven roller, a conveyor belt body and a feed chute, the driven roller is rotatably arranged in one of the end forks, the driven roller is provided with a roller center groove for avoiding position, the conveyor belt body and the driven roller are in rolling contact, and the feed chute extends obliquely toward the outside.

[0012] One end of the feed chute is located on the top of the swing bracket, and the other end is placed on the external cross bar. Therefore, changes in the angle and position of the swing bracket will cause corresponding changes in the angle and height of the feed chute, but the feed chute as a whole still has an inclined trend, and can transport the soil that falls on itself to the outside of the foundation pit.

[0013] Furthermore, the adaptive opening and closing soil unloading mechanism includes a driving component, an elastic excavation component and an unfolding unloading component, the driving component is arranged at one end of the depth gear adjustment component, the elastic excavation component array is arranged on the conveyor belt assembly, and the unfolding unloading component is arranged in the elastic excavation component.

[0014] Through the cooperation of the driving assembly, the elastic excavation assembly and the unfolding and unloading assembly, the soil can be wrapped and fixed during the soil transportation process, and after the soil is transported to the top, the soil is automatically opened and released, and then reset again after the release. The whole process does not require a complex electronic control module, but can be completed only by relying on a clever mechanical mechanism.

[0015] Preferably, the driving assembly includes a self-driving roller, a driving sleeve and a toggle sleeve, the output shaft of the self-driving roller is fixedly connected to the other end fork frame, the driving sleeve is fixedly connected to the outer shell of the self-driving roller, the feed chute is rotatably arranged on the output shaft of the self-driving roller, a sleeve center groove is arranged at the center of the driving sleeve, the toggle sleeve is clamped in the sleeve center groove, and the toggle sleeve is evenly distributed in an annular manner with toggle teeth.

[0016] As a further preferred embodiment of the present invention, the elastic excavation assembly includes a guide base, a rotatable shovel part and an elastic sheet one, the guide base is fixedly connected to the conveyor belt body, the guide base is arranged in an array along the conveyor belt body, the guide base is provided with mutually intersecting transverse groove parts and inclined groove parts, the rotatable shovel part is rotatably arranged on the top of the guide base, the elastic sheet one is arranged between the guide base and the rotatable shovel part, and the rotatable shovel part has a tendency to expand outward under the elastic force of the elastic sheet one.

[0017] On the one hand, the continuously moving conveyor belt body can move with the elastic excavation component and the unfolding unloading component to complete the excavation of the soil. On the other hand, it can also form a soil conveying surface together with the guide base and the rotatable shovel part, thereby preventing the excavated soil from leaking.

[0018] Preferably, the unfolding and unloading assembly includes a sliding baffle, a second U-shaped elastic sheet, a toggle slider and a connecting rope, the sliding baffle is slidably arranged in the inclined groove portion, the second U-shaped elastic sheet is arranged between the bottom of the inclined groove portion and the sliding baffle, the sliding baffle has a tendency to extend outward under the elastic force of the second U-shaped elastic sheet, the toggle slider is slidably arranged in the transverse groove portion, the bottom of the toggle slider cooperates with the toggle tooth portion, and the connecting rope is arranged between the sliding baffle and the toggle slider.

[0019] The rotatable shovel part can cut the soil through its own blade and transport it to the top. Through the elastic force of the elastic sheet 1, after losing the limit of the sliding baffle, the rotatable shovel part will expand and vibrate to ensure that the soil falls; and when the sliding baffle is reset, the rotatable shovel part will also be reset.

[0020] When the toggle sleeve rotates, it can toggle the toggle slider through the toggle teeth, thereby controlling the sliding of the sliding baffle; since the spacing of the toggle teeth is slightly larger than the sum of the spacing of the guide base and the sliding amplitude of the toggle slider, only one group of toggle sliders is toggle-slid at the same time, and after this group of toggle sliders and the toggle teeth are disengaged, the next group of toggle sliders will be toggle-slid.

[0021] The rotatable shovel part opens at the top of the swing bracket, so that most of the soil can fall into the feed chute, and after the rotatable shovel part opens to the maximum extent, it hits the guide base to generate a local vibration, through which the soil adhering to the rotatable shovel part can fall off to avoid residue.

[0022] Furthermore, the intrusion control mechanism includes a frame assembly and an electric cylinder assembly, the frame assembly is arranged on the moving travel mechanism, and the electric cylinder assembly is arranged on the frame assembly.

[0023] Preferably, the frame assembly includes a frame-type main body frame, a rotating cross bar 1 and a rotating cross bar 2, the frame-type main body frame is arranged on the mobile travel mechanism, sliding through holes are provided at both ends of the frame-type main body frame, and an eccentric through hole is also provided on the frame-type main body frame, the rotating cross bar 1 is engaged in the eccentric through hole, and the rotating cross bar 2 is fixedly connected to the middle position of the frame-type main body frame.

[0024] As a further preferred embodiment of the present invention, the electric cylinder assembly includes an electric cylinder articulated seat and an electric cylinder body, the electric cylinder articulated seat is fixedly connected to the side of the swing bracket, one end of the electric cylinder body is hinged to the electric cylinder articulated seat, and the other end of the electric cylinder body is hinged to the rotating cross bar 2.

[0025] The angle of the swing bracket can be changed by extending and retracting the electric cylinder body, thereby achieving the technical goal of excavating layer by layer from shallow to deep.

[0026] Furthermore, the mobile traveling mechanism includes a lateral adjustment component and a traveling component, and the traveling component is arranged on the lateral adjustment component.

[0027] Preferably, the lateral adjustment assembly includes a side frame, an adjustment cross bar and a limit sleeve, the adjustment cross bar is detachably arranged between the side frames on both sides, the limit sleeve can slide and lock on the adjustment cross bar, the frame-type main body frame is slidably arranged on the adjustment cross bar through a sliding through hole, and the limit sleeve is located on both sides of the frame-type main body frame.

[0028] As a further preferred embodiment of the present invention, the traveling assembly includes a wheel fork, a traveling wheel and a profile track, the wheel fork is arranged on the side frame, the traveling wheel is rotatably arranged at the bottom of the wheel fork, the profile track is placed on the ground, and the traveling wheel travels along the profile track.

[0029] The side frames and adjustment cross bars are easy to disassemble and assemble, convenient for transportation and flexible for installation. According to requirements, the traveling wheels can be electrically driven or pulled by ropes fixed to the frame-type main frame.

[0030] The beneficial effects achieved by the present invention using the above structure are as follows:

[0031] (1) This device is specially used for excavating shallow small foundation pits. Compared with excavators of the same size, it has high efficiency and good foundation pit flatness. In addition, since this device is small in size and easy to disassemble, it is convenient to transport on unpaved roads and for frequent transportation.

[0032] (2) By presetting the height of the swing bracket and controlling the angle during the excavation process, the excavation depth can be flexibly controlled. In addition, since the adjustment ranges of the height preset and the angle control overlap, when there is a certain range of deviation from the preset, it can be remedied by angle control without having to stop the machine for adjustment again.

[0033] (3) By switching different gear bosses and engaging the gear locking blocks, the height of the swing bracket relative to the frame-type main frame can be preset, thereby adjusting and controlling the maximum depth of excavation. Based on this height, the angle of the swing bracket can be flexibly changed through the electric cylinder assembly, so that the foundation pit can be excavated layer by layer from shallow to deep.

[0034] (4) The continuously moving conveyor belt body can, on the one hand, carry the elastic excavation component and the unfolding unloading component to complete the excavation of the soil; on the other hand, it can also form a soil conveying surface together with the guide base and the rotatable shovel part, thereby preventing the excavated soil from leaking.

[0035] (5) One end of the feed chute is located on the top of the swing bracket, and the other end is placed on the external cross bar. Therefore, changes in the angle and position of the swing bracket will cause corresponding changes in the angle and height of the feed chute. However, the feed chute as a whole still has an inclined trend, and can transport the soil that falls on itself to the outside of the foundation pit.

[0036] (6) Through the coordination of the driving assembly, the elastic excavation assembly and the unfolding and unloading assembly, the soil can be wrapped and fixed during the soil transportation process, and after the soil is transported to the top, the soil is automatically opened and released, and reset again after release. The whole process does not require a complex electronic control module, but can be completed by relying solely on a clever mechanical mechanism.

[0037] (7) The rotatable shovel part can cut the soil through its own blade and transport it to the top. Through the elastic force of the elastic sheet 1, after losing the limit of the sliding baffle, the rotatable shovel part will expand and vibrate, thereby ensuring that the soil falls; and when the sliding baffle is reset, the rotatable shovel part will also be reset accordingly.

[0038] (8) When the toggle sleeve rotates, it can toggle the toggle slider through the toggle teeth, thereby controlling the sliding of the sliding baffle; since the spacing of the toggle teeth is slightly larger than the sum of the spacing of the guide base and the sliding amplitude of the toggle slider, only one group of toggle sliders is toggle-slid at the same time, and after this group of toggle sliders and the toggle teeth are separated, the next group of toggle sliders will be toggle-slid.

[0039] (9) The rotatable shovel opens at the top of the swing bracket, so that most of the soil can fall into the feed chute. After the rotatable shovel opens to the maximum extent, it hits the guide base and generates a local vibration. This vibration can cause the soil adhering to the rotatable shovel to fall off and avoid residue.

[0040] (10) The angle of the swing bracket can be changed by extending and retracting the electric cylinder body, thereby achieving the technical goal of excavating layer by layer from shallow to deep.

[0041] (11) The side frame and the adjustment cross bar are easy to disassemble and assemble, convenient for transportation and flexible for installation. According to the needs, the traveling wheel can be electrically driven or pulled by a rope fixed on the frame-type main frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A three-dimensional diagram of a portable shallow foundation pit excavation device proposed by the present invention;

[0043] Figure 2 A front view of a portable shallow foundation pit excavation device proposed by the present invention;

[0044] Figure 3 It is a left view of a portable shallow foundation pit excavation device proposed by the present invention;

[0045] Figure 4 A top view of a portable shallow foundation pit excavation device proposed by the present invention;

[0046] Figure 5 for Figure 3 A cross-sectional view along the cutting line AA;

[0047] Figure 6 for Figure 2 A cross-sectional view along the cutting line BB;

[0048] Figure 7 for Figure 2 A cross-sectional view along the cutting line CC;

[0049] Figure 8 A partially expanded schematic diagram of the structure of a portable shallow foundation pit excavation device proposed by the present invention;

[0050] Fig. 9 for Figure 5 A partial enlarged view of point Ⅰ in the middle;

[0051] Fig.10 for Figure 7 A partial enlarged view of the middle II;

[0052] Fig.11 for Figure 7 A partial enlarged view of the middle part III;

[0053] Fig.12 for Figure 6 A partial enlarged view of the middle IV;

[0054] Fig.13 Schematic diagram of the tilt angle of the swing bracket.

[0055] Among them, 1. conveyor belt type flat excavation mechanism, 2. adaptive opening and closing soil unloading mechanism, 3. intrusion control mechanism, 4. mobile travel mechanism, 5. depth gear adjustment component, 6. conveyor belt component, 7. swing bracket, 8. gear locking block, 9. locking block spring, 10. driven roller, 11. conveyor belt body, 12. feed chute, 13. bracket chute, 14. end fork frame, 15. gear boss, 16. center circle hole, 17. locking hole, 18. roller center groove, 19. drive component, 20. elastic excavation component, 21. unfolding unloading component, 22. self-driving roller, 23. drive sleeve, 24. toggle sleeve, 25. guide base, 26. , rotatable shovel part, 27, elastic sheet one, 28, sliding baffle, 29, U-shaped elastic sheet two, 30, toggle slider, 31, connecting rope, 32, sleeve center groove, 33, toggle tooth part, 34, transverse groove part, 35, oblique groove part, 36, frame assembly, 37, electric cylinder assembly, 38, frame-type main frame, 39, rotating cross bar one, 40, rotating cross bar two, 41, electric cylinder hinge seat, 42, electric cylinder body, 43, sliding through hole, 44, eccentric through hole, 45, lateral adjustment assembly, 46, travel assembly, 47, side frame, 48, adjustment cross bar, 49, limiting sleeve, 50, wheel fork frame, 51, travel wheel, 52, profile track.

[0056] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying 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 should not be understood as limiting the present invention.

[0059] like Figure 1 to Figure 12 As shown, the present invention proposes a portable shallow foundation pit excavation device, including a conveyor belt type horizontal excavation mechanism 1, an adaptive opening and closing soil unloading mechanism 2, an intrusion control mechanism 3 and a mobile traveling mechanism 4, the conveyor belt type horizontal excavation mechanism 1 is arranged on the intrusion control mechanism 3, the intrusion control mechanism 3 is arranged on the mobile traveling mechanism 4, and the adaptive opening and closing soil unloading mechanism 2 is arranged on the conveyor belt type horizontal excavation mechanism 1.

[0060] This device is specially used for excavating shallow small foundation pits. Compared with excavators of the same size, it has high efficiency and good foundation pit flatness. In addition, since this device is small in size and easy to disassemble, it is convenient to transport on unpaved roads and for frequent transportation.

[0061] The conveyor belt type horizontal excavation mechanism 1 comprises a depth gear adjustment component 5 and a conveyor belt component 6 . The depth gear adjustment component 5 is rotatably arranged on the frame component 36 , and the conveyor belt component 6 is arranged on the depth gear adjustment component 5 .

[0062] The depth gear adjustment assembly 5 includes a swing bracket 7, a gear locking block 8 and a locking block spring 9. The swing bracket 7 is provided with a bracket slide 13, and the swing bracket 7 can slide and rotate on the rotating cross bar 39 through the bracket slide 13. End forks 14 are provided at both ends of the swing bracket 7. The side array of the swing bracket 7 is provided with a gear boss 15. The gear locking block 8 is provided with a center circular hole 16, and the gear locking block 8 can rotate and slide on the rotating cross bar 39 through the center circular hole 16. The locking block spring 9 is arranged between the gear locking block 8 and the frame-type main body frame 38. The gear locking block 8 is also provided with a locking hole 17 that cooperates with the gear boss 15. When the locking hole 17 is engaged with different gear bosses 15, the height of the swing bracket 7 relative to the frame-type main body frame 38 can be changed.

[0063] By presetting the height of the swing bracket 7 and controlling the angle during excavation, the excavation depth can be flexibly controlled. Since the adjustment ranges of the height preset and the angle control overlap, when there is a deviation from the preset, it can be remedied by angle control without having to stop the machine for adjustment again.

[0064] By switching different gear bosses 15 to engage with the gear locking blocks 8, the height of the swing bracket 7 relative to the frame-type main body frame 38 can be preset, so as to adjust and control the maximum depth of excavation. Based on this height, the angle of the swing bracket 7 can be flexibly changed by the electric cylinder assembly 37, so that the foundation pit can be excavated layer by layer from shallow to deep.

[0065] The conveyor belt assembly 6 includes a driven roller 10, a conveyor belt body 11 and a feed chute 12. The driven roller 10 is rotatably arranged in one of the end forks 14. A roller center groove 18 for avoiding position is provided on the driven roller 10. The conveyor belt body 11 and the driven roller 10 are in rolling contact, and the feed chute 12 extends obliquely toward the outside.

[0066] One end of the feed chute 12 is located on the top of the swing bracket 7, and the other end is placed on the external cross bar. Therefore, changes in the angle and position of the swing bracket 7 will cause corresponding changes in the angle and height of the feed chute 12, but the feed chute 12 as a whole still has an inclined trend and can transport the soil that falls on it to the outside of the foundation pit.

[0067] The adaptive opening and closing soil unloading mechanism 2 includes a driving component 19, an elastic excavation component 20 and an unfolding unloading component 21. The driving component 19 is arranged at one end of the depth gear adjustment component 5, the elastic excavation component 20 array is arranged on the conveyor belt component 6, and the unfolding unloading component 21 is arranged in the elastic excavation component 20.

[0068] Through the cooperation of the driving component 19, the elastic excavation component 20 and the unfolding and unloading component 21, the soil can be wrapped and fixed during the soil transportation process, and after the soil is transported to the top, the soil is automatically opened and released, and reset again after the release. The whole process does not require a complex electronic control module, but can be completed only by relying on a clever mechanical mechanism.

[0069] The driving assembly 19 includes a self-driving roller 22, a driving sleeve 23 and a toggle sleeve 24. The output shaft of the self-driving roller 22 is fixedly connected to the other end fork frame 14, the driving sleeve 23 is fixedly connected to the outer shell of the self-driving roller 22, the feed chute 12 is rotatably arranged on the output shaft of the self-driving roller 22, a sleeve center groove 32 is arranged at the center of the driving sleeve 23, the toggle sleeve 24 is engaged in the sleeve center groove 32, and toggle teeth 33 are evenly distributed in an annular manner on the toggle sleeve 24.

[0070] The elastic excavation assembly 20 includes a guide base 25, a rotatable shovel portion 26 and an elastic sheet 27. The guide base 25 is fixedly connected to the conveyor belt body 11. The guide base 25 is arranged in an array along the conveyor belt body 11. The guide base 25 is provided with mutually intersecting transverse groove portions 34 and inclined groove portions 35. The rotatable shovel portion 26 is rotatably arranged on the top of the guide base 25. The elastic sheet 27 is arranged between the guide base 25 and the rotatable shovel portion 26. The rotatable shovel portion 26 has a tendency to expand outward under the elastic force of the elastic sheet 27.

[0071] On the one hand, the continuously moving conveyor belt body 11 can move with the elastic excavation component 20 and the unfolding unloading component 21 to complete the excavation of the soil. On the other hand, it can also form a soil conveying surface together with the guide base 25 and the rotatable shovel part 26 to prevent the excavated soil from leaking.

[0072] The unfolding and unloading assembly 21 includes a sliding baffle 28, a U-shaped elastic piece 29, a toggle slider 30 and a connecting rope 31. The sliding baffle 28 is slidably arranged in the inclined groove portion 35. The U-shaped elastic piece 29 is arranged between the bottom of the inclined groove portion 35 and the sliding baffle 28. The sliding baffle 28 has a tendency to extend outward under the elastic force of the U-shaped elastic piece 29. The toggle slider 30 is slidably arranged in the transverse groove portion 34. The bottom of the toggle slider 30 cooperates with the toggle tooth portion 33. The connecting rope 31 is arranged between the sliding baffle 28 and the toggle slider 30.

[0073] The rotatable shovel part 26 can cut the soil and transport it to the top through its own blade. Through the elastic force of the elastic sheet 27, after losing the limit of the sliding baffle 28, the rotatable shovel part 26 will expand and vibrate to ensure that the soil falls; and when the sliding baffle 28 is reset, the rotatable shovel part 26 will also be reset.

[0074] When rotating, the toggle sleeve 24 can toggle the toggle slider 30 through the toggle teeth 33, thereby controlling the sliding of the sliding baffle 28; since the spacing of the toggle teeth 33 is slightly larger than the sum of the spacing of the guide base 25 and the sliding amplitude of the toggle slider 30, only one group of toggle sliders 30 is toggle-slid at the same time, and after this group of toggle sliders 30 and the toggle teeth 33 are disengaged, the next group of toggle sliders 30 will be toggled.

[0075] The rotatable shovel part 26 opens at the top of the swing bracket 7, so that most of the soil can fall into the feed chute 12, and the rotatable shovel part 26 hits the guide base 25 after opening to the maximum extent, which will produce a local vibration. Through this vibration, the soil adhering to the rotatable shovel part 26 can fall off to avoid residue.

[0076] The intrusion control mechanism 3 includes a frame assembly 36 and an electric cylinder assembly 37 . The frame assembly 36 is arranged on the moving travel mechanism 4 , and the electric cylinder assembly 37 is arranged on the frame assembly 36 .

[0077] The frame assembly 36 includes a frame-type main frame 38, a rotating cross bar 1 39 and a rotating cross bar 2 40. The frame-type main frame 38 is arranged on the moving travel mechanism 4. Sliding through holes 43 are provided at both ends of the frame-type main frame 38. An eccentric through hole 44 is also provided on the frame-type main frame 38. The rotating cross bar 1 39 is engaged in the eccentric through hole 44, and the rotating cross bar 2 40 is fixedly connected to the middle position of the frame-type main frame 38.

[0078] The electric cylinder assembly 37 includes an electric cylinder articulated seat 41 and an electric cylinder body 42. The electric cylinder articulated seat 41 is fixed to the side of the swing bracket 7. One end of the electric cylinder body 42 is articulated to the electric cylinder articulated seat 41, and the other end of the electric cylinder body 42 is articulated to the rotating cross bar 40.

[0079] The angle of the swing bracket 7 can be changed by extending and retracting the electric cylinder body 42, thereby achieving the technical purpose of excavating layer by layer from shallow to deep.

[0080] The mobile traveling mechanism 4 includes a lateral adjustment component 45 and a traveling component 46 . The traveling component 46 is arranged on the lateral adjustment component 45 .

[0081] The lateral adjustment assembly 45 includes a side frame 47, an adjustment cross bar 48 and a limit sleeve 49. The adjustment cross bar 48 is detachably arranged between the side frames 47 on both sides. The limit sleeve 49 can slide and lock on the adjustment cross bar 48. The frame-type main body frame 38 is slidably arranged on the adjustment cross bar 48 through the sliding through hole 43. The limit sleeve 49 is located on both sides of the frame-type main body frame 38.

[0082] The traveling assembly 46 includes a wheel fork 50 , a traveling wheel 51 and a profile track 52 . The wheel fork 50 is arranged on the side frame 47 , the traveling wheel 51 is rotatably arranged at the bottom of the wheel fork 50 , the profile track 52 is placed on the ground, and the traveling wheel 51 travels along the profile track 52 .

[0083] The side frame 47 and the adjustment cross bar 48 are easy to disassemble and assemble, convenient for transportation and flexible for installation. According to requirements, the traveling wheel 51 can be electrically driven or pulled by a rope fixed to the frame-type main body frame 38.

[0084] like Fig.13As shown, the horizontal bracket is a frame-type main frame 38, and the longitudinal and inclined brackets are both swing brackets 7, and A, B, and C respectively represent different states of the swing bracket 7; since the start of excavation, the swing bracket 7 changes its angle along A, B and C in sequence; by engaging different gear bosses 15 through the gear locking block 8, the limit excavation depth can be changed, and within the range of the limit depth, the angle of the swing bracket 7 can be adjusted through the electric cylinder body 42, so as to flexibly control the excavation depth; according to the actual working conditions, the final position of the swing bracket 7 may not need to be converted to vertical, and the final angle of the swing bracket 7 is flexibly adjusted according to the actual working conditions.

[0085] During specific use, the user first needs to determine the position of the foundation pit, then lay the profile rails 52 on both sides of the foundation pit, then put the frame-type main body frame 38 on the adjustment cross bar 48, and then install the lateral adjustment component 45 as a whole, and then continue to adjust the lateral position of the frame-type main body frame 38 through the locking and fixing of the limit sleeves 49 at both ends. After the adjustment is completed, according to the target depth of the foundation pit, the gear locking block 8 is clamped on the appropriate gear boss 15 to complete the height adjustment of the swing bracket 7.

[0086] After all adjustments are completed, the self-driving roller 22 is started. Since the output shaft of the self-driving roller 22 is fixedly connected to the end fork frame 14, the shell of the self-driving roller 22 will rotate together with the driving sleeve 23 and the shifting sleeve 24.

[0087] At the same time, the conveyor belt body 11 will follow the movement, and through the extension of the electric cylinder body 42, the bottom end of the whole composed of the conveyor belt type flat digging mechanism 1 and the adaptive opening and closing soil unloading mechanism 2 can be gradually brought close to the ground. When the rotatable shovel part 26 touches the ground, part of the soil will be dug out and transported toward the top along with the movement of the conveyor belt body 11;

[0088] When the rotatable shovel part 26 is used to dig soil, the traveling wheel 51 is driven by electricity or traction to move in the profile rail 52, so that a layer of soil can be dug.

[0089] When the toggle sleeve 24 rotates, the toggle tooth portion 33 will hook the toggle slider 30 and make it slide to the limit position. When the toggle slider 30 slides, it will pull the sliding baffle 28 through the connecting rope 31, and overcome the elastic force of the U-shaped elastic piece 29 to retract into the inclined groove portion 35. The rotatable shovel portion 26 without the limit of the sliding baffle 28 will quickly rotate and open under the elastic force of the elastic piece 1 27, and release the soil to the feed chute 12. When the rotatable shovel portion 26 rotates to the limit position, it will hit the guide base 25 and generate a local vibration. This vibration can make the soil adhered to the rotatable shovel portion 26 fall off;

[0090] Since the spacing of the toggle teeth 33 is slightly larger than the sum of the spacing of the guide base 25 and the sliding amplitude of the toggle slider 30, only one group of toggle sliders 30 is toggle-slid at the same time, and the next group of toggle sliders 30 will be toggle-slid only after this group of toggle sliders 30 and the toggle teeth 33 are separated.

[0091] The overall excavation process can be: first dig from one side of the foundation pit, from shallow to deep, layer by layer. After each layer is dug, the excavation depth can be increased by extending the electric cylinder body 42. After one side is excavated, the frame main body frame 38 is adjusted to excavate toward the other side in turn until the entire foundation pit is excavated.

[0092] As another new embodiment of the present invention, in order to protect the adaptive opening and closing soil unloading mechanism 2 during transportation, the length of the swing bracket 7 can be designed to be smaller than the central space of the frame-type main body frame 38; when transportation is required, the gear locking block 8 is adjusted to a suitable gear position of the gear boss 15, and the swing bracket 7 can be completely placed in the central space of the frame-type main body frame 38. At this time, the side frame 47 and the adjustment cross bar 48 are removed, which is very convenient for transportation.

[0093] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0094] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A portable shallow foundation pit excavation device, characterized in that: The invention comprises a conveyor belt type horizontal excavation mechanism (1), an adaptive opening and closing soil unloading mechanism (2), an intrusion control mechanism (3) and a moving travel mechanism (4), wherein the conveyor belt type horizontal excavation mechanism (1) is arranged on the intrusion control mechanism (3), the intrusion control mechanism (3) is arranged on the moving travel mechanism (4), and the adaptive opening and closing soil unloading mechanism (2) is arranged on the conveyor belt type horizontal excavation mechanism (1); The intrusion control mechanism (3) comprises a frame assembly (36) and an electric cylinder assembly (37); the frame assembly (36) is arranged on the moving travel mechanism (4), and the electric cylinder assembly (37) is arranged on the frame assembly (36); The conveyor belt type horizontal excavation mechanism (1) comprises a depth gear adjustment component (5) and a conveyor belt component (6); the depth gear adjustment component (5) is rotatably mounted on a frame component (36); the depth gear adjustment component (5) is controlled by an electric cylinder component (37) to adjust the depth and angle; the conveyor belt component (6) is mounted on the depth gear adjustment component (5); The adaptive opening and closing soil unloading mechanism (2) comprises a driving component (19), an elastic excavation component (20) and an unfolding unloading component (21); the driving component (19) is arranged at one end of the depth gear adjustment component (5); the elastic excavation component (20) is arranged in an array on the conveyor belt component (6); and the unfolding unloading component (21) is arranged in the elastic excavation component (20).

2. A portable shallow foundation pit excavation device according to claim 1, characterized in that: The frame assembly (36) comprises a frame-type main frame (38), a rotating cross bar 1 (39) and a rotating cross bar 2 (40); the frame-type main frame (38) is arranged on the moving travel mechanism (4); sliding through holes (43) are arranged at both ends of the frame-type main frame (38); an eccentric through hole (44) is also arranged on the frame-type main frame (38); the rotating cross bar 1 (39) is engaged with the eccentric through hole (44); and the rotating cross bar 2 (40) is fixedly connected to the middle position of the frame-type main frame (38).

3. A portable shallow foundation pit excavation device according to claim 2, characterized in that: The depth gear adjustment assembly (5) comprises a swing bracket (7), a gear locking block (8) and a locking block spring (9); the swing bracket (7) is provided with a bracket slide groove (13); the swing bracket (7) can slide and rotate on a rotating cross bar (39) through the bracket slide groove (13); end forks (14) are provided at both ends of the swing bracket (7); a gear boss (15) is provided on the side array of the swing bracket (7); and a center stopper (16) is provided on the gear locking block (8). The gear locking block (8) is capable of rotating and sliding on the rotating cross bar (39) through the central circular hole (16); the locking block spring (9) is arranged between the gear locking block (8) and the frame-type main body frame (38); the gear locking block (8) is also provided with a locking hole (17) that cooperates with the gear boss (15); when the locking hole (17) is engaged with different gear bosses (15), the height of the swing bracket (7) relative to the frame-type main body frame (38) can be changed.

4. A portable shallow foundation pit excavation device according to claim 3, characterized in that: The conveyor belt assembly (6) comprises a driven roller (10), a conveyor belt body (11) and a feed chute (12); the driven roller (10) is rotatably arranged in one of the end forks (14); a roller center groove (18) for avoiding position is provided on the driven roller (10); the conveyor belt body (11) and the driven roller (10) are in rolling contact; and the feed chute (12) extends obliquely toward the outside.

5. A portable shallow foundation pit excavation device according to claim 4, characterized in that: The driving assembly (19) comprises a self-driving roller (22), a driving sleeve (23) and a toggle sleeve (24); the output shaft of the self-driving roller (22) is fixedly connected to the other end fork frame (14); the driving sleeve (23) is fixedly connected to the outer shell of the self-driving roller (22); the feed chute (12) is rotatably arranged on the output shaft of the self-driving roller (22); a sleeve center groove (32) is arranged at the center of the driving sleeve (23); the toggle sleeve (24) is engaged in the sleeve center groove (32); and toggle teeth (33) are evenly distributed in an annular shape on the toggle sleeve (24).

6. A portable shallow foundation pit excavation device according to claim 5, characterized in that: The elastic excavation assembly (20) comprises a guide base (25), a rotatable shovel portion (26) and an elastic sheet (27); the guide base (25) is fixedly connected to the conveyor belt body (11); the guide base (25) is arranged in an array along the conveyor belt body (11); the guide base (25) is provided with mutually intersecting transverse groove portions (34) and inclined groove portions (35); the rotatable shovel portion (26) is rotatably arranged on the top of the guide base (25); the elastic sheet (27) is arranged between the guide base (25) and the rotatable shovel portion (26); the rotatable shovel portion (26) has a tendency to expand outwards under the elastic force of the elastic sheet (27).

7. A portable shallow foundation pit excavation device according to claim 6, characterized in that: The unfolding and unloading assembly (21) comprises a sliding baffle (28), a second U-shaped elastic piece (29), a toggle slider (30) and a connecting rope (31); the sliding baffle (28) is slidably arranged in the inclined groove portion (35); the second U-shaped elastic piece (29) is arranged between the bottom of the inclined groove portion (35) and the sliding baffle (28); the sliding baffle (28) has a tendency to extend outward under the elastic force of the second U-shaped elastic piece (29); the toggle slider (30) is slidably arranged in the transverse groove portion (34); the bottom of the toggle slider (30) cooperates with the toggle tooth portion (33); and the connecting rope (31) is arranged between the sliding baffle (28) and the toggle slider (30).

8. A portable shallow foundation pit excavation device according to claim 7, characterized in that: The electric cylinder assembly (37) comprises an electric cylinder hinge seat (41) and an electric cylinder body (42), wherein the electric cylinder hinge seat (41) is fixedly connected to the side of the swing bracket (7), one end of the electric cylinder body (42) is hinged to the electric cylinder hinge seat (41), and the other end of the electric cylinder body (42) is hinged to the second rotating cross bar (40).

9. A portable shallow foundation pit excavation device according to claim 8, characterized in that: The mobile travel mechanism (4) comprises a lateral adjustment component (45) and a travel component (46), wherein the travel component (46) is arranged on the lateral adjustment component (45); The lateral adjustment assembly (45) comprises a side frame (47), an adjustment cross bar (48) and a limiting sleeve (49); the adjustment cross bar (48) is detachably arranged between the side frames (47) on both sides; the limiting sleeve (49) can slide and lock on the adjustment cross bar (48); the frame-type main body frame (38) is slidably arranged on the adjustment cross bar (48) through a sliding through hole (43); and the limiting sleeve (49) is located on both sides of the frame-type main body frame (38).

10. A portable shallow foundation pit excavation device according to claim 9, characterized in that: The traveling assembly (46) comprises a wheel fork (50), a traveling wheel (51) and a profile track (52); the wheel fork (50) is arranged on a side frame (47); the traveling wheel (51) is rotatably arranged at the bottom of the wheel fork (50); the profile track (52) is placed on the ground; and the traveling wheel (51) travels along the profile track (52).

Images