Auxiliary device for earth excavation of foundation pit with ultra-deep muddy soil layer

Abstract

The utility model discloses an auxiliary device for foundation pit earth excavation of an ultra-deep muddy soil layer, which relates to the technical field of foundation pit excavation auxiliary equipment, and comprises an earth bucket body, a bucket body dumping control mechanism, a bucket body horizontal rotating mechanism and a bucket body opening and closing mechanism, the bucket body dumping control mechanism comprises an electric hydraulic telescopic rod, two cross beams are fixedly connected to the front side and the rear side of the top of the earthwork bucket body correspondingly, and the two ends of each cross beam are movably connected with the bottom ends of two pull rods through two first movable shafts correspondingly; the tops of the two pull rods far away from the release notch are movably connected with the bottom ends of the two electric hydraulic telescopic rods through two second movable shafts correspondingly, and the tops of the two pull rods close to the release notch are movably connected with the bottom ends of the two supporting rods through two second movable shafts correspondingly. According to the auxiliary device for earth excavation of the foundation pit in the ultra-deep muddy soil layer, earth dumping is stable and rapid, and the earth dumping direction can be controlled according to needs.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit excavation auxiliary equipment, in particular to an auxiliary device for excavating earthwork in a foundation pit of an ultra-deep muddy soil layer. Background Art

[0002] As the height of buildings increases, the foundation pits of buildings also need to be dug deeper and deeper, especially in some coastal areas. There is a large amount of silty clay in the foundation pits, and it is impossible to use normal debris roads to transport earth. Especially for projects with ultra-deep silty soil foundation pits, there is not enough space to use steel structure roads.

[0003] Therefore, in the prior art, a tower crane is used to lift the bucket to transport the earth in the foundation pit. After the bucket filled with earth is lifted out of the foundation pit, the earth needs to be dumped out. In the prior art, the direction of dumping the earth is not easy to control, and the demand for orderly dumping of earth cannot be met. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an auxiliary device for excavating earthwork in a foundation pit of an ultra-deep muddy soil layer. When the foundation pit is lowered, the door plate will close the release gap to facilitate the earthwork bucket to hold the earthwork. After being hoisted out of the foundation pit, the door plate can open the release gap and serve as a guiding outlet for pouring out the earthwork. The dumping of the earthwork is stable and fast, and the direction of the dumping of the earthwork can be controlled as needed. The purpose of orderly dumping the earthwork can be achieved, and the demand for transporting the earthwork in the foundation pit of an ultra-deep muddy soil layer can be met, and the problems in the background technology can be effectively solved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an auxiliary device for excavating earthwork in a super-deep muddy soil layer foundation pit, comprising an earthwork bucket body, a release notch is provided on one side of the earthwork bucket body, and further comprising:

[0006] The bucket body dumping control mechanism includes a crossbeam, a movable shaft 1, a pull rod, a movable shaft 2, an electric hydraulic telescopic rod, a support rod and a top plate. The front and rear sides of the top of the earthwork bucket body are respectively fixedly connected to two crossbeams, and the two ends of each crossbeam are respectively movably connected to the bottom ends of the two pull rods through two movable shafts 1, and the tops of the two pull rods away from the release notch are respectively movably connected to the bottom ends of the two electric hydraulic telescopic rods through two movable shafts 2, and the tops of the two pull rods close to the release notch are respectively movably connected to the bottom ends of the two support rods through two movable shafts 2, and the tops of the two support rods and the tops of the two electric hydraulic telescopic rods are respectively fixedly connected to the four corners of the top plate;

[0007] The bucket horizontal rotating mechanism is installed in the middle of the upper side of the top plate;

[0008] The bucket body opening and closing mechanism is installed in the release notch.

[0009] The horizontal rotating mechanism of the bucket body can mobilize the rotation of the top plate, thereby driving the release notch of the earthwork bucket body to different directions, thereby controlling the direction of pouring out the earthwork. When it is necessary to pour out the earthwork, the bucket body opening and closing mechanism will open the release notch, the electric hydraulic telescopic rod will shorten, and the two pull rods away from the release notch will be pulled upward, so that the side of the earthwork bucket body away from the release notch can be lifted with the help of the crossbeam, so that the earthwork bucket body can be tilted in the direction of the release notch, so that the earthwork contained in the earthwork bucket body can be dumped and released from the release notch. After pouring out the earthwork, the bucket body opening and closing mechanism will block the release notch again, and the electric hydraulic telescopic rod will extend to keep the earthwork bucket body horizontal again, waiting to be hoisted by the tower crane to the inside of the ultra-deep silty soil layer foundation pit, and the earthwork excavated in the ultra-deep silty soil layer foundation pit can be loaded into the earthwork bucket body again.

[0010] Furthermore, the bucket body tipping control mechanism further includes a reinforcement bracket, and at least three reinforcement brackets are arranged at equal intervals at the bottom of the earthwork bucket body, and the top ends of each reinforcement bracket are respectively fixedly connected to two cross beams. The reinforcement bracket is a U-shaped structure, and the reinforcement bracket supports the bottom of the earthwork bucket body with the help of two cross beams, and the reinforcement bracket and the cross beam complete the reinforcement of the earthwork bucket body.

[0011] Furthermore, the bucket horizontal rotation mechanism includes a fixed plate, an inclined rod, a tapered roller bearing, a rotating shaft, a coupling, a rotating motor and a motor sleeve. The middle part of the upper side of the top plate is fixedly connected to the bottom end of the rotating shaft, and the rotating shaft is rotatably connected to the middle part of the fixed plate through the tapered roller bearing. The upper edge of the fixed plate is fixedly connected to the bottom of the motor sleeve through four inclined rods arranged in a circular array. The middle part of the motor sleeve is fixedly installed with a rotating motor, and the output shaft at the bottom of the rotating motor is connected to the top of the rotating shaft through a coupling. The inclined rod connects the motor sleeve and the fixed plate to form a cone-shaped mounting frame. The rotating motor drives the rotating shaft to rotate through the coupling. The rotating shaft rotates relative to the fixed plate through the tapered roller bearing, thereby driving the top plate and the earthwork bucket to rotate, thereby changing the direction of the release notch. The setting of the tapered roller bearing can withstand the vertical tension on the rotating shaft.

[0012] Furthermore, it also includes a top plate locking mechanism, which includes a card slot, a hinge support, a hinge shaft and a card block. The outer peripheral side of the fixed plate is provided with a card slot in an annular array, and the upper side of the top plate is fixedly connected to a hinge support. The hinge support is movably connected to one end of the card block through the hinge shaft, and the other end of the card block is engaged with the corresponding card slot on the outer peripheral side of the fixed plate. If the earthwork bucket and the top plate are not required to rotate relative to the fixed plate, the card block is moved relative to the hinge support through the hinge shaft so that the card block is engaged with the corresponding card slot on the fixed plate, and the top plate and the fixed plate can be locked. When the earthwork bucket and the top plate are required to rotate relative to the fixed plate, the card block is disengaged from the card slot on the fixed plate, so that the top plate can rotate freely relative to the fixed plate.

[0013] Furthermore, the top plate locking mechanism also includes a lifting ring, and the lifting ring is arranged on the upper side of the card block, and the lifting ring facilitates the user to better lift and operate the card block.

[0014] Furthermore, it also includes a hoisting mechanism, which includes an arch frame, a mounting hole and a hanging hole. The two sides of the top of the motor sleeve are respectively fixedly connected to the two ends of the arch frame, the center of the top of the arch frame is provided with a mounting hole, and the two sides of the top of the arch frame are respectively provided with hanging holes. The arch frame can be rigidly connected to the hanging component of the tower crane through the mounting hole, and can be quickly connected to the hook of the tower crane by means of the hanging hole, so as to realize the hanging of the mounting frame.

[0015] Furthermore, the bucket opening and closing mechanism includes an opening and closing shaft, a door panel, a protective baffle, an opening and closing motor, a driving gear and a driven gear. The bottom of the release notch is rotatably connected to a longitudinal opening and closing shaft, the bottom end of the door panel is fixedly connected to the opening and closing shaft, the front and rear ends of the door panel close to the earthwork bucket body are respectively fixedly connected to two protective baffles, the rear end of the opening and closing shaft extends to the rear side of the earthwork bucket body and is fixedly connected to the driven gear, the rear side of the earthwork bucket body is fixedly installed with an opening and closing motor, the output shaft of the opening and closing motor is fixedly connected to the driving gear, and the driving gear is meshingly connected to the driven gear. The opening and closing motor drives the driving gear to rotate, and the meshing action of the driving gear and the driven gear can drive the opening and closing shaft to rotate relative to the earth bucket body, thereby driving the door panel to rotate with the opening and closing shaft as the center, so that the door panel can open or close the release gap on the earth bucket body. When the door panel is in a vertical state, the release gap can be closed. When it is necessary to pour out the earth from the release gap, the opening and closing motor drives the top of the door panel to tilt outward, and the earth is led out from the upper side of the door panel and poured out. The protective baffle covers both sides of the door panel to prevent the dumped earth from slipping from both sides of the door panel, so that the earth can be poured out in an orderly manner.

[0016] Furthermore, the bucket opening and closing mechanism also includes a protective shell and an ear seat. The rear side of the earthmoving bucket is provided with a protective shell covering the opening and closing motor, the driving gear and the driven gear. The side of the protective shell is fixedly connected with an ear seat, and the ear seat is fixedly connected to the rear side of the earthmoving bucket by screws. Since the working environment of the opening and closing motor, the driving gear and the driven gear will inevitably be contaminated with soil, affecting their normal work, the ear seat and the screws fix the protective shell, and the protective shell can protect the opening and closing motor, the driving gear and the driven gear, so that they can work stably.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The horizontal rotating mechanism of the bucket body can mobilize the top plate to rotate, thereby driving the release notch of the earthwork bucket body to different directions, thereby controlling the direction of pouring out the earthwork. When it is necessary to pour out the earthwork, the opening and closing mechanism of the bucket body will open the release notch, shorten the electric hydraulic telescopic rod, and pull the two pull rods away from the release notch upward, so that the side of the earthwork bucket body away from the release notch is lifted with the help of the crossbeam, so that the earthwork bucket body is tilted in the direction of the release notch, so that the earthwork contained in the earthwork bucket body is dumped and released from the release notch, and the dumping of earthwork is stable and fast.

[0019] 2. The auxiliary device for excavating the earthwork in the ultra-deep muddy soil layer foundation pit can open the release gap after being hoisted out of the foundation pit and serve as a guiding outlet for dumping the earthwork. The direction of dumping the earthwork can be controlled as needed, which can achieve the purpose of orderly dumping the earthwork and meet the demand for transporting the earthwork out of the foundation pit in the ultra-deep muddy soil layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0022] Figure 3 This is a schematic diagram of the rear structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the local structure of the utility model;

[0024] Figure 5 For this utility model Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0025] In the figure: 1 earthwork bucket body, 2 bucket body dumping control mechanism, 21 crossbeam, 22 movable shaft 1, 23 pull rod, 24 movable shaft 2, 25 electric hydraulic telescopic rod, 26 support rod, 27 top plate, 28 reinforcement bracket, 3 bucket body horizontal rotation mechanism, 31 fixed plate, 32 inclined rod, 33 tapered roller bearing, 34 rotating shaft, 35 coupling, 36 rotating motor, 37 motor sleeve, 4 lifting mechanism, 41 arch frame, 42 mounting hole, 43 lifting hole, 5 top plate locking mechanism, 51 card slot, 52 hinge support, 53 hinge shaft, 54 card block, 55 lifting ring, 6 bucket body opening and closing mechanism, 61 opening and closing shaft, 62 door panel, 63 protective baffle, 64 protective shell, 65 ear seat, 66 opening and closing motor, 67 driving gear, 68 driven gear. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] For example, see Figures 1 to 5 The utility model provides a technical solution: an auxiliary device for excavating earthwork in a super-deep muddy soil layer foundation pit, comprising an earthwork bucket 1, a release notch is opened on one side of the earthwork bucket 1, and also comprises a bucket dumping control mechanism 2, a bucket horizontal rotation mechanism 3 and a bucket opening and closing mechanism 6;

[0028] The bucket body dumping control mechanism 2 includes a cross beam 21, a movable shaft 1 22, a pull rod 23, a movable shaft 24, an electric hydraulic telescopic rod 25, a support rod 26 and a top plate 27. The front and rear sides of the top of the earth-moving bucket body 1 are respectively fixedly connected to two cross beams 21. The two ends of each cross beam 21 are respectively movably connected to the bottom ends of the two pull rods 23 through two movable shafts 1 22. The tops of the two pull rods 23 away from the release notch are respectively movably connected to the bottom ends of the two electric hydraulic telescopic rods 25 through two movable shafts 24. The tops of the two pull rods 23 close to the release notch are respectively movably connected to the bottom ends of the two support rods 26 through two movable shafts 24. The tops of the two support rods 26 and the tops of the two electric hydraulic telescopic rods 25 are respectively fixedly connected to the four corners of the top plate 27.

[0029] The bucket body dumping control mechanism 2 also includes a reinforcement bracket 28. No less than three reinforcement brackets 28 are arranged at equal intervals at the bottom of the earthwork bucket body 1. The top ends of each reinforcement bracket 28 are respectively fixedly connected to two cross beams 21. The reinforcement bracket 28 is a U-shaped structure. The reinforcement bracket 28 supports the bottom of the earthwork bucket body 1 with the help of two cross beams 21. The reinforcement bracket 28 and the cross beam 21 complete the reinforcement of the earthwork bucket body 1.

[0030] The bucket horizontal rotating mechanism 3 is installed in the middle of the upper side of the top plate 27.

[0031] The bucket horizontal rotation mechanism 3 includes a fixed plate 31, an inclined rod 32, a tapered roller bearing 33, a rotating shaft 34, a coupling 35, a rotating motor 36 and a motor sleeve 37. The middle part of the upper side of the top plate 27 is fixedly connected to the bottom end of the rotating shaft 34, and the rotating shaft 34 is rotatably connected to the middle part of the fixed plate 31 through the tapered roller bearing 33. The upper edge of the fixed plate 31 is fixedly connected to the bottom of the motor sleeve 37 through four inclined rods 32 arranged in a circular array. The middle part of the motor sleeve 37 is fixedly installed with a rotating motor 36, and the output shaft at the bottom of the rotating motor 36 is connected to the top of the rotating shaft 34 through the coupling 35. The inclined rod 32 connects the motor sleeve 37 and the fixed plate 31 to form a frustum-shaped mounting frame. The rotary motor 36 drives the rotating shaft 34 to rotate through the coupling 35. The rotating shaft 34 rotates relative to the fixed plate 31 through the tapered roller bearing 33, thereby driving the top plate 27 and the earthwork bucket 1 to rotate, thereby changing the direction of the release notch. The setting of the tapered roller bearing 33 can withstand the vertical pulling force on the rotating shaft 34.

[0032] The bucket body opening and closing mechanism 6 is installed in the release notch.

[0033] The bucket opening and closing mechanism 6 includes an opening and closing shaft 61, a door panel 62, a protective baffle 63, an opening and closing motor 66, a driving gear 67 and a driven gear 68. The bottom of the release notch is rotatably connected with a longitudinal opening and closing shaft 61, the bottom end of the door panel 62 is fixedly connected to the opening and closing shaft 61, and the front and rear ends of the door panel 62 close to the earth-moving bucket body 1 are respectively fixedly connected with two protective baffles 63, the rear end of the opening and closing shaft 61 extends to the rear side of the earth-moving bucket body 1 and is fixedly connected with a driven gear 68, the rear side of the earth-moving bucket body 1 is fixedly installed with an opening and closing motor 66, the output shaft of the opening and closing motor 66 is fixedly connected with a driving gear 67, and the driving gear 67 is meshed with the driven gear 68. The opening and closing motor 66 drives the driving gear 67 to rotate, and the meshing action of the driving gear 67 and the driven gear 68 can drive the opening and closing shaft 61 to rotate relative to the earth bucket body 1, thereby driving the door panel 62 to rotate around the opening and closing shaft 61, so that the door panel 62 can open or close the release gap on the earth bucket body 1. When the door panel 62 is in a vertical state, the release gap can be closed. When it is necessary to pour out the earth from the release gap, the opening and closing motor 66 drives the top of the door panel 62 to tilt outward, and the earth is led out from the upper side of the door panel 62 and poured out. The protective baffle 63 blocks both sides of the door panel 62 to prevent the dumped earth from slipping off from both sides of the door panel 62, so that the earth can be poured out in an orderly manner.

[0034] The bucket body opening and closing mechanism 6 also includes a protective shell 64 and an ear seat 65. The rear side of the earthwork bucket body 1 is provided with a protective shell 64 that covers the opening and closing motor 66, the driving gear 67 and the driven gear 68. The side of the protective shell 64 is fixedly connected with the ear seat 65, and the ear seat 65 is fixedly connected to the rear side of the earthwork bucket body 1 by screws. Since the working environment of the opening and closing motor 66, the driving gear 67 and the driven gear 68 will inevitably be contaminated with soil, affecting their normal work, the ear seat 65 and the screws fix the protective shell 64, and the protective shell 64 can protect the opening and closing motor 66, the driving gear 67 and the driven gear 68, so that they can work stably.

[0035] When in use, the bucket horizontal rotating mechanism 3 can mobilize the top plate 27 to rotate, thereby driving the release notch of the earth bucket body 1 to face different directions, thereby controlling the direction of pouring out the earth. When it is necessary to pour out the earth, the bucket opening and closing mechanism 6 opens the release notch, the electric hydraulic telescopic rod 25 shortens, and pulls the two pull rods 23 away from the release notch upward, thereby lifting the side of the earth bucket body 1 away from the release notch with the help of the cross beam 21, so that the earth bucket body 1 is tilted in the direction of the release notch, so that the earth contained in the earth bucket body 1 is dumped and released from the release notch. After pouring out the earth, the bucket opening and closing mechanism 6 blocks the release notch again, and the electric hydraulic telescopic rod 25 extends, so that the earth bucket body 1 remains horizontal again, waiting to be re-lifted by the tower crane to the inside of the ultra-deep silt soil layer foundation pit, and the earth excavated in the ultra-deep silt soil layer foundation pit is loaded into the earth bucket body 1 again.

[0036] For example 2, please refer to Figures 1 to 5 The utility model provides a technical solution: an auxiliary device for excavating earthwork in a super-deep muddy soil layer foundation pit. The structure of this embodiment is roughly the same as that of the first embodiment, except that:

[0037] The top plate locking mechanism 5 is also included. The top plate locking mechanism 5 includes a slot 51, a hinge support 52, a hinge shaft 53 and a block 54. The slot 51 is provided in an annular array on the outer peripheral side of the fixed plate 31. The upper side of the top plate 27 is fixedly connected with a hinge support 52. The hinge support 52 is movably connected to one end of the block 54 through the hinge shaft 53. The other end of the block 54 is engaged with the slot 51 corresponding to the outer peripheral side of the fixed plate 31. If the earthwork bucket 1 and the top plate 27 do not need to rotate relative to the fixed plate 31, the block 54 is moved relative to the hinge support 52 through the hinge shaft 53, so that the block 54 is engaged with the corresponding slot 51 on the fixed plate 31, and the top plate 27 and the fixed plate 31 can be locked. When the earthwork bucket 1 and the top plate 27 need to rotate relative to the fixed plate 31, the block 54 is disengaged from the slot 51 on the fixed plate 31, so that the top plate 27 can rotate freely relative to the fixed plate 31.

[0038] The top plate locking mechanism 5 further includes a lifting ring 55 . The lifting ring 55 is arranged on the upper side of the clamping block 54 . The lifting ring 55 facilitates the user to better lift and operate the clamping block 54 .

[0039] For example 3, please refer to Figures 1 to 5 The utility model provides a technical solution: an auxiliary device for excavating earthwork in a super-deep muddy soil layer foundation pit. The structure of this embodiment is roughly the same as that of the second embodiment, except that:

[0040] It also includes a lifting mechanism 4, which includes an arch frame 41, a mounting hole 42 and a hanging hole 43. The top two sides of the motor cover 37 are respectively fixedly connected to the two ends of the arch frame 41. The top center of the arch frame 41 is provided with a mounting hole 42, and the top two sides of the arch frame 41 are respectively provided with hanging holes 43.

[0041] The arch frame 41 can be rigidly connected to the lifting component of the tower crane through the mounting hole 42, and can be quickly connected to the hook of the tower crane through the lifting hole 43, so as to realize the lifting of the mounting frame.

[0042] It is worth noting that the electric hydraulic telescopic rod 25, the rotating motor 36 and the opening and closing motor 66 disclosed in the above embodiments are all controlled by an external PLC controller, and the control method thereof adopts the method commonly used in the prior art, wherein the rotating motor 36 and the opening and closing motor 66 both adopt servo motors, and their models and powers can be selected according to the specific implementation situation.

[0043] 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.

[0044] 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. An auxiliary device for excavating an earthwork pit in an ultra-deep muddy soil layer, comprising an earthwork bucket (1), wherein a release notch is provided on one side of the earthwork bucket (1), and wherein: Also includes: The bucket body tipping control mechanism (2) comprises a cross beam (21), a movable shaft 1 (22), a pull rod (23), a movable shaft 2 (24), an electric hydraulic telescopic rod (25), a support rod (26) and a top plate (27), wherein the top and rear sides of the earthwork bucket body (1) are respectively fixedly connected to two cross beams (21), and the two ends of each cross beam (21) are respectively movably connected to the bottom ends of the two pull rods (23) through two movable shafts 1 (22), the tops of the two pull rods (23) away from the release notch are respectively movably connected to the bottom ends of the two electric hydraulic telescopic rods (25) through two movable shafts 2 (24), and the tops of the two pull rods (23) close to the release notch are respectively movably connected to the bottom ends of the two support rods (26) through two movable shafts 2 (24), and the tops of the two support rods (26) and the tops of the two electric hydraulic telescopic rods (25) are respectively fixedly connected to the four corners of the top plate (27); The bucket horizontal rotating mechanism (3) is installed in the middle of the upper side of the top plate (27); The bucket body opening and closing mechanism (6) is installed in the release notch.

2. The auxiliary device for excavating an ultra-deep muddy soil foundation pit according to claim 1, characterized in that: The bucket body tipping control mechanism (2) further comprises a reinforcement bracket (28), and no less than three reinforcement brackets (28) are arranged at equal intervals laterally at the bottom of the earthwork bucket body (1), and the top ends of each reinforcement bracket (28) are respectively fixedly connected to two cross beams (21).

3. The auxiliary device for excavating an ultra-deep muddy soil foundation pit according to claim 1, characterized in that: The bucket body horizontal rotating mechanism (3) comprises a fixed plate (31), an inclined rod (32), a tapered roller bearing (33), a rotating shaft (34), a coupling (35), a rotating motor (36) and a motor sleeve (37); the middle portion of the upper side of the top plate (27) is fixedly connected to the bottom end of the rotating shaft (34); the rotating shaft (34) is rotatably connected to the middle portion of the fixed plate (31) through the tapered roller bearing (33); the upper edge of the fixed plate (31) is fixedly connected to the bottom of the motor sleeve (37) through four inclined rods (32) arranged in a circular array; the middle portion of the motor sleeve (37) is fixedly mounted with the rotating motor (36); and the output shaft at the bottom of the rotating motor (36) is connected to the top end of the rotating shaft (34) through the coupling (35).

4. The auxiliary device for excavating an ultra-deep muddy soil foundation pit according to claim 3 is characterized by: The top plate locking mechanism (5) further comprises a card slot (51), a hinge support (52), a hinge shaft (53) and a card block (54); the card slot (51) is provided in an annular array on the outer peripheral side of the fixed plate (31); the upper side of the top plate (27) is fixedly connected to the hinge support (52); the hinge support (52) is movably connected to one end of the card block (54) via the hinge shaft (53); and the other end of the card block (54) is card-engaged with the card slot (51) corresponding to the outer peripheral side of the fixed plate (31).

5. The auxiliary device for excavating an ultra-deep muddy soil foundation pit according to claim 4, characterized in that: The top plate locking mechanism (5) further comprises a lifting ring (55), and the lifting ring (55) is arranged on the upper side of the clamping block (54).

6. The auxiliary device for excavating an ultra-deep muddy soil foundation pit according to claim 3, characterized in that: The motor housing (37) further comprises a hoisting mechanism (4), the hoisting mechanism (4) comprising an arch frame (41), a mounting hole (42) and a hanging hole (43), the top two sides of the motor housing (37) are respectively fixedly connected to the two ends of the arch frame (41), the top center of the arch frame (41) is provided with a mounting hole (42), and the top two sides of the arch frame (41) are respectively provided with hanging holes (43).

7. The auxiliary device for excavating an ultra-deep muddy soil foundation pit according to claim 1, characterized in that: The bucket body opening and closing mechanism (6) comprises an opening and closing shaft (61), a door plate (62), a protective baffle (63), an opening and closing motor (66), a driving gear (67) and a driven gear (68); the bottom of the release notch is rotatably connected to a longitudinal opening and closing shaft (61); the opening and closing shaft (61) is fixedly connected to the bottom end of the door plate (62); the front and rear ends of the door plate (62) close to the earthwork bucket body (1) are respectively fixedly connected to two protective baffles (63); the rear end of the opening and closing shaft (61) extends to the rear side of the earthwork bucket body (1) and is fixedly connected to the driven gear (68); the rear side of the earthwork bucket body (1) is fixedly installed with an opening and closing motor (66); the output shaft of the opening and closing motor (66) is fixedly connected to the driving gear (67); the driving gear (67) is meshingly connected to the driven gear (68).

8. The auxiliary device for excavating an ultra-deep muddy soil foundation pit according to claim 7, characterized in that: The bucket body opening and closing mechanism (6) further comprises a protective shell (64) and an ear seat (65); the rear side of the earth moving bucket body (1) is provided with a protective shell (64) that covers an opening and closing motor (66), a driving gear (67) and a driven gear (68); the side of the protective shell (64) is fixedly connected to the ear seat (65); and the ear seat (65) is fixedly connected to the rear side of the earth moving bucket body (1) by means of screws.

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