CN213897277U - Continuous wall grab bucket device - Google Patents

Abstract

The utility model provides a continuous wall grab bucket device, continuous wall grab bucket device includes: a frame body; the grab bucket mechanism comprises a connecting rod and a bucket head, wherein one end of the connecting rod is hinged with the bucket head, and the bucket head is hinged with the lower end of the frame body; the driving mechanism is arranged in the inner space of the frame body and is hinged with the other end of the connecting rod so as to drive the bucket head to be opened or closed; and the impact vibration mechanism is arranged on the frame body and is suitable for applying vibration impact to the bucket head. The utility model has the advantages that the impact vibration mechanism is arranged on the frame body of the continuous wall grab bucket device, and the impact vibration mechanism is utilized to apply vibration impact to the bucket head of the grab bucket mechanism, so that the continuous wall grab bucket device is not only limited in grabbing work of soft stratum, but also can grab work of hard stratum; and when the driving mechanism drives the bucket head to close, the impact vibration mechanism continues to work to help the bucket head break loose strata so as to reduce resistance when the bucket head is closed.

Description

Continuous wall grab bucket device

Technical Field

The utility model relates to an engineering machine tool technical field particularly, relates to a diaphragm wall grab bucket device.

Background

At present, the grab bucket device is mainly applied to soft clay layer, sand bed or cobble layer, can't assault into the tooth and the closure snatchs to comparatively hard stratum and closely knit sand bed. In the prior art, a grab bucket device is usually adopted to cooperate with a double-wheel milling machine, a percussion drill or a rotary drilling machine to carry out construction, the grab bucket device is firstly utilized to grab and dig a soft ground surface layer, and then the double-wheel milling machine, the percussion drill or the rotary drilling machine is utilized to carry out grooving construction on a hard rock stratum or a compact sand layer. However, the impact drilling and the rotary drilling have complex processes, higher cost and lower efficiency; the rock-entering construction efficiency of the double-wheel milling machine is high, but the slag removal process is complex, supporting facilities are more, and the cost is relatively high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be: how to improve the application range of grab bucket device to guarantee that the grab bucket device also can carry out degree of depth grabbing and digging work on comparatively hard stratum and closely knit sand bed.

In order to solve the above problem, the utility model provides a continuous wall grab bucket device, include:

a frame body;

the grab bucket mechanism comprises a connecting rod and a bucket head, wherein one end of the connecting rod is hinged with the bucket head, and the bucket head is hinged with the lower end of the frame body;

the driving mechanism is arranged in the inner space of the frame body and is hinged with the other end of the connecting rod so as to drive the bucket head to be opened or closed;

and the impact vibration mechanism is arranged on the frame body and is suitable for applying vibration impact to the bucket head.

Optionally, the impact vibration mechanism is disposed in the inner space of the frame body and above or below the driving mechanism.

Optionally, the impact vibration mechanism includes an impactor and a first reversing valve, a first channel and a second channel are arranged in the first reversing valve, the impactor includes a cylinder and a piston, one end of the piston extends into the cylinder, the other end extends out of the cylinder, an upper piston cavity and a lower piston cavity are arranged in the cylinder, and a first oil hole communicated with the upper piston cavity and a second oil hole communicated with the lower piston cavity are arranged on the cylinder; the first passage is suitable for communicating an oil inlet passage with the first oil hole, so that hydraulic oil enters the piston upper cavity and the piston is driven to move downwards to impact the driving mechanism or the bucket head; the second passage is suitable for communicating an oil return passage with the first oil hole so that hydraulic oil enters the piston lower cavity to promote the piston to move upwards.

Optionally, the impact vibration mechanism further comprises an energy accumulator arranged on the frame body, and an oil port of the energy accumulator is connected to a pipeline between the second oil hole and the oil inlet path.

Optionally, still be equipped with in the cylinder body and be located piston epicoele with piston low pressure chamber and piston conversion chamber between the piston cavity of resorption, still be equipped with on the cylinder body with the third oilhole of piston low pressure chamber intercommunication and with the fourth oilhole of piston conversion chamber intercommunication, the third oilhole be suitable for with oil return circuit is connected.

Optionally, a buffer cavity is further arranged in the cylinder body, the buffer cavity is located above the piston upper cavity, and the upper end of the piston is arranged in the buffer cavity and is suitable for moving up and down in the buffer cavity.

Optionally, the impact vibration mechanism includes an impactor, a second reversing valve and an energy accumulator, a first passage and a second passage are arranged in the second reversing valve, the impactor includes a cylinder body and a piston arranged in the cylinder body, an upper piston cavity and a lower piston cavity are arranged in the cylinder body, and a first oil hole communicated with the upper piston cavity and a second oil hole communicated with the lower piston cavity are arranged on the cylinder body; the first passage is suitable for communicating an oil port of the energy accumulator with the first oil hole so that hydraulic oil enters the piston upper cavity and the piston is enabled to move downwards to impact the driving mechanism or the bucket head; the second passage is suitable for communicating an oil return passage with the first oil hole so that hydraulic oil enters the piston lower cavity to promote the piston to move upwards.

Optionally, actuating mechanism includes grab bucket hydro-cylinder, slider and balladeur train, the slider cover is established the upper end of grab bucket hydro-cylinder, the one end of balladeur train with the telescopic shaft of grab bucket hydro-cylinder is connected, the balladeur train is located the outside of grab bucket hydro-cylinder, and with the telescopic shaft of grab bucket hydro-cylinder is connected, just the connecting rod the other end with the balladeur train is articulated, in order to drive the fill head is opened or is closed, the impact vibration mechanism is through the striking the slider is in order to transmit the vibration impact extremely the fill is overhead.

Optionally, a first limiting structure is arranged on the frame body, a second limiting structure is arranged on the sliding block, and the first limiting structure and the second limiting structure are matched with each other to limit the upward sliding and downward sliding displacement of the sliding block.

Optionally, the first limiting structure is a limiting groove, the second limiting structure is a limiting protrusion, and the limiting protrusion is arranged in the limiting groove and is suitable for sliding up and down in the limiting groove.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a set up the impact vibration mechanism on the support body of continuous wall grab bucket device, utilize the impact vibration mechanism to exert the vibration impact to the fill head of grab bucket mechanism, thus, when the fill head of grab bucket mechanism contacts or is about to contact comparatively hard rock stratum and closely knit sand bed, the impact vibration mechanism begins to work, exert the vibration impact to the fill head, the fill head will receive the vibration impact transmission to comparatively hard stratum, carry out the vibration impact to the stratum constantly, in order to reach the mesh of advancing tooth and broken stratum, make continuous wall grab bucket device not only confine the snatching work in soft stratum, can also snatch work to comparatively hard stratum, the application range of continuous wall grab bucket device has greatly been improved; and when the driving mechanism drives the bucket head to close, the impact vibration mechanism continues to work to help the bucket head to break the loosened stratum so as to reduce the resistance when the bucket head is closed, improve the grabbing efficiency of the bucket head and further improve the working efficiency of the continuous wall grab bucket device.

Drawings

Fig. 1 is a schematic structural view of a continuous wall grab bucket device in an embodiment of the present invention;

FIG. 2 is a schematic structural view of an impactor and a driving mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the embodiment of the present invention showing the upward movement of the piston when the impact vibration mechanism is driven by hydraulic pressure and an accumulator;

FIG. 4 is a schematic diagram of the embodiment of the present invention illustrating the upward movement of the piston when the impact vibration mechanism is driven by hydraulic pressure and an accumulator;

FIG. 5 is a schematic diagram of another situation of downward movement of the piston when the impact vibration mechanism is driven by hydraulic pressure and an energy accumulator according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating another situation of upward movement of the piston when the impact vibration mechanism is driven by hydraulic pressure and an energy accumulator according to the embodiment of the present invention;

FIG. 7 is a schematic diagram of the embodiment of the present invention illustrating the downward movement of the piston when the impact vibration mechanism is driven by the energy accumulator;

fig. 8 is a schematic diagram of the principle that the piston moves upwards when the impact vibration mechanism is driven by the energy accumulator according to the embodiment of the present invention.

Description of reference numerals:

1-frame body, 12-first limit structure, 2-grab bucket mechanism, 21-connecting rod, 22-bucket head, 3-driving mechanism, 31-grab bucket oil cylinder, 311-oil cylinder seat, 3112-second shaft hole, 32-sliding block, 321-first shaft hole, 322-second limit structure, 323-collided protrusion, 33-sliding frame, 4-impact vibration mechanism, 41-impactor, 411-cylinder body, 412-piston, 4121-first piston rod, 4122-first piston boss, 4123-second piston rod, 4124-second piston boss, 4125-third piston rod, 413-upper piston cavity, 414-lower piston cavity, 415-low piston pressure cavity, 416-piston conversion cavity, 417-cavity, 42-first reversing valve, 421-first channel, 422-second channel, 43-accumulator, 44-second directional valve, 441-first channel, 442-second channel;

a-a first valve port, b-a second valve port, c-a third valve port, d-a fourth valve port, e-a fifth valve port; m-the first oil hole, n-the second oil hole, r-the third oil hole, s-the fourth oil hole; g-a first interface, h-a second interface, i-a third interface, j-a fourth interface, and k-a fifth interface.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the drawings, the forward direction of the Z1 axis represents the upward direction, and the reverse direction of the Z2 axis represents the downward direction. Also, it is noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

With reference to fig. 1 to 8, an embodiment of the present invention provides a continuous wall grab bucket device (hereinafter referred to as a grab bucket device), including: a frame body 1; the grab bucket mechanism 2 comprises a connecting rod 21 and a bucket head 22, one end of the connecting rod 21 is hinged with the bucket head 22, and the bucket head 22 is hinged with the lower end of the frame body 1; the driving mechanism 3 is arranged in the inner space of the frame body 1, and the driving mechanism 3 is hinged with the other end of the connecting rod 21 to drive the bucket head 22 to open or close; and the impact vibration mechanism 4 is arranged on the frame body 1 and is suitable for applying vibration impact to the bucket head 22.

The driving mechanism 3 and the impact vibration mechanism 4 are arranged on the frame body 1, the upper end of a connecting rod 21 of the grab bucket mechanism 2 is hinged with the lower end of the driving mechanism 3, the lower end of the connecting rod 21 is hinged with a bucket head 22 of the grab bucket mechanism 2, and the driving mechanism 3 drives the connecting rod 21 to move up and down to drive the bucket head 22 to be opened or closed, so that the construction stratum is grabbed in the grooving process of the continuous wall. In the embodiment, the frame body 1 of the continuous wall grab bucket device is provided with the impact vibration mechanism 4, and the impact vibration mechanism 4 is utilized to apply vibration impact to the bucket head 22 of the grab bucket mechanism 2, so that when the bucket head 22 of the grab bucket mechanism 2 is contacted with or is about to be contacted with a relatively hard rock stratum and a compact sand layer, the impact vibration mechanism 4 starts to work to apply vibration impact to the bucket head 22, the bucket head 22 transmits the received vibration impact to the relatively hard stratum, and the vibration impact is continuously performed on the stratum so as to achieve the purposes of tooth feeding and stratum crushing, so that the continuous wall grab bucket device is not only limited in grabbing work of the soft stratum, but also can grab the relatively hard stratum, and the application range of the continuous wall grab bucket device is greatly improved; moreover, when the driving mechanism 3 drives the bucket head 22 to close, the impact vibration mechanism 4 continues to work to help the bucket head 22 to break the loosened stratum, so that the resistance of the bucket head 22 when closing is reduced, the grabbing efficiency of the bucket head 22 is improved, and the working efficiency of the continuous wall grab bucket device is further improved.

Furthermore, because the surface layer of the construction site is usually a soft soil layer, when the grab bucket device grabs the soil layer on the surface of the ground, the impact vibration mechanism 4 is not started first, so that the use times of the impact vibration mechanism 4 are reduced, and the energy consumption is saved; when the bucket head 22 of the grab bucket device digs to a certain depth and reaches a harder gravel layer, the impact vibration mechanism 4 is started again to help the teeth on the bucket head 22 to break gravel and enter the gravel layer, and grabbing is completed.

Further, the driving mechanism 3 may be electrically driven or hydraulically driven, and for example, an electric telescopic rod may be used to drive the connecting rod 21 to move up and down, or a hydraulic cylinder may be used to drive the connecting rod 21 to move up and down. Because the whole quality of grab bucket device is great, and the electric power consumption is great when adopting the form of electric drive, and use cost is higher, so the preferred actuating mechanism 3 of this embodiment adopts hydraulic drive's form, also can reduce use cost when guaranteeing the normal work of grab bucket device, improves the economic nature of grab bucket device.

Alternatively, as shown in fig. 1, the impact vibration mechanism 4 is disposed in the inner space of the frame body 1, and is located above or below the driving mechanism 3.

Because the grab bucket device causes the grit to splash easily snatching the stratum process, so this embodiment sets up actuating mechanism 3 and impact vibration mechanism 4 in the inner space of support body 1, utilizes support body 1 to protect actuating mechanism 3 and impact vibration mechanism 4 to prevent the grit that splashes and strike actuating mechanism 3 and impact vibration mechanism 4, cause the damage to actuating mechanism 3 and impact vibration mechanism 4. In addition, as shown in fig. 1, the impact vibration mechanism 4 may be disposed above the driving mechanism 3, in this case, the impact vibration mechanism 4 directly applies vibration impact to the driving mechanism 3, and then the driving mechanism 3 transmits the vibration impact to the bucket head 22 through the connecting rod 21, that is, the bucket head 22 indirectly receives the vibration impact, so that the bucket head 22 is prevented from being deformed when directly receiving the vibration impact for a long time, and the service life is shortened. The impact vibration mechanism 4 can also be directly arranged below the driving mechanism 3, so that the impact vibration mechanism 4 is just located above the bucket head 22, at the moment, the impact vibration mechanism 4 can directly apply vibration impact on the bucket head 22, thereby better helping the bucket head 22 to enter teeth and break strata, and further leading the grabbing depth of the bucket head 22 to be larger.

Further, in order to guarantee the dynamic and static balance of the grab bucket device and the stability during construction, the impact vibration mechanism 4 is arranged on the axis of the frame body 1, so that the grab bucket device is not inclined when the impact vibration mechanism 4 works, and the grab bucket device can stably grab.

Alternatively, as shown in fig. 3 and 4, the impact vibration mechanism 4 includes an impactor 41 and a first direction valve 42, a first channel 421 and a second channel 422 are provided in the first direction valve 42, the impactor 41 includes a cylinder 411 and a piston 412, one end of the piston 412 extends into the cylinder 411, the other end extends out of the cylinder 411, a piston upper chamber 413 and a piston lower chamber 414 are provided in the cylinder 411, and a first oil hole m communicated with the piston upper chamber 413 and a second oil hole n communicated with the piston lower chamber 414 are provided in the cylinder 411; the first passage 421 is adapted to communicate the oil-intake passage with the first oil hole m, so that hydraulic oil enters the piston upper chamber 413, causing the piston 412 to move downward to strike the drive mechanism 3 or the head 22; the second passage 422 is adapted to communicate the oil return passage with the first oil hole m so that the hydraulic oil enters the piston lower chamber 414 to cause the piston 412 to move upward.

IN this embodiment, the grab bucket device is provided with a hydraulic system, the impact vibration mechanism 4 is directly driven by the hydraulic system, the hydraulic system includes an oil inlet path and an oil return path, and the pressure IN the oil inlet path is greater than the pressure IN the oil return path, "IN fig. 3 to 8 represents that oil is taken from the oil inlet path of the hydraulic system, and" OUT "represents that oil is returned from the oil return path of the hydraulic system. Specifically, the first direction valve 42 is provided with a first valve port a adapted to be connected to an oil inlet path, a second valve port b adapted to be connected to an oil return path, and a third valve port c connected to the first oil hole m of the impactor 41, a first passage 421 in the first direction valve 42 is adapted to communicate the first valve port a with the third valve port c, so that the first oil hole m of the impactor 41 is communicated with the oil inlet path, and a second passage 422 is adapted to communicate the second valve port b with the third valve port c, so that the first oil hole m of the impactor 41 is communicated with the oil return path. The cylinder 411 of the impactor 41 is of a hollow structure, the upper end of the cylinder 411 is closed, the lower end of the cylinder 411 is provided with an opening, the upper end of the piston 412 is arranged in the cylinder 411, the lower end of the piston 412 extends out of the cylinder 411 from the opening, and the lower end of the piston 412 is located right above the driving mechanism 3 or the bucket head 22, so that the piston 412 can apply vibration impact to the driving mechanism 3 or the bucket head 22 conveniently.

Taking the example that the impact vibration mechanism 4 is disposed above the driving mechanism 3, the process of the hydraulic system driving the impact vibration mechanism 4 to work is as follows: when the head 22 of the grab bucket device contacts or is about to contact a harder gravel layer, the impact vibration mechanism 4 is started, at this time, the first passage 421 in the first direction valve 42 communicates the first valve port a with the third valve port c, so that the first oil hole m of the impactor 41 is communicated with the oil inlet path, and further the piston upper chamber 413 is communicated with the oil inlet path, at this time, hydraulic oil in the oil inlet path flows into the first direction valve 42 from the first valve port a of the first direction valve 42, flows out from the third valve port c through the first passage 421, and then enters the piston upper chamber 413 along a pipeline between the third valve port c and the first oil hole m of the impactor 41, so that the hydraulic oil in the piston upper chamber 413 pushes the piston 412 to move downwards to hit the driving mechanism 3 located below the impactor 41; in the downward movement process of the piston 412, the hydraulic oil in the piston lower cavity 414 flows out of the piston lower cavity 414 from the second oil hole n of the impactor 41, and is collected into a pipeline between the first valve port a of the first reversing valve 42 and the oil inlet path, so that the hydraulic oil flows into the piston upper cavity 413 from the first reversing valve 42; after being impacted, the driving mechanism 3 slides downwards along the frame body 1 to drive the connecting rod 21 and the bucket head 22 to move downwards, meanwhile, the driving mechanism 3 slides upwards under the action of a reaction force to reset, and drives the connecting rod 21 and the bucket head 22 to reset upwards, so that one-time impact is completed; after the piston 412 impacts the driving mechanism 3, the first reversing valve 42 starts reversing, the second passage 422 communicates the second valve port b with the third valve port c, so that the first oil hole m of the impactor 41 is communicated with the oil return path, and further the piston upper chamber 413 is communicated with the oil return path, at this time, hydraulic oil in the oil return path enters the piston lower chamber 414 from the second oil hole n of the impactor 41, and the hydraulic oil in the piston lower chamber 414 pushes the piston 412 to move upwards so as to leave the driving mechanism 3; this is repeated to perform the vibration impact of the impact vibration mechanism 4 on the driving mechanism 3, and further, the vibration impact of the impact vibration mechanism 4 on the bucket head 22 is realized by being transmitted to the bucket head 22 through the driving mechanism 3.

When 4 continuous operation of impact vibration mechanism, can strike actuating mechanism 3 in succession, impact vibration mechanism 4 applys continuous vibration impact to actuating mechanism 3 promptly, and simultaneously, actuating mechanism 3 will receive the vibration impact transmit to fill head 22 through connecting rod 21 on for fill head 22 vibrates in upper and lower direction, and applys continuous vibration impact to comparatively hard grit layer, with broken grit layer, realizes advancing the tooth and snatchs the work.

Further, the first direction valve 42 may be an electric control valve or a hydraulic control valve, and may be selected according to the needs during the actual use process, which is not limited herein.

Further, as shown in fig. 2, the piston 412 includes a first piston rod 4121, a first piston boss 4122, a second piston rod 4123, a second piston boss 4124 and a third piston rod 4125 which are sequentially connected from top to bottom, a distance is provided between each of the first piston rod 4121, the second piston rod 4123 and the third piston rod 4125 and the cylinder wall of the cylinder 411, each of the first piston boss 4122 and the second piston boss 4124 is attached to the cylinder wall of the cylinder 411 and is adapted to slide up and down along the cylinder wall of the cylinder 411, the cross-sectional areas of the first piston boss 4122 and the second piston boss 4124 are the same, and the cross-sectional area of the first piston rod 4121 is smaller than the cross-sectional area of the third piston rod 4125. Taking the first piston boss 4122 as an example, the cross section of the first piston boss 4122 is a section exposed when the first piston boss 4122 is cut off in the horizontal direction.

In this embodiment, the cylinder 411, the first piston rod 4121, and the first piston boss 4122 together define a piston upper chamber 413 such that the piston upper chamber 413 is located above the first piston boss 4122, and the cylinder 411, the second piston boss 4124, and the third piston rod 4125 together define a piston lower chamber 414 such that the piston lower chamber 414 is located below the second piston boss 4124. The piston 412 may have a cylindrical structure or a prismatic structure, and correspondingly, the cavity in the cylinder 411 may be a cylindrical cavity or a prismatic cavity. In practical use, in order to reduce the resistance of the hydraulic oil flowing in the cylinder 411, the piston 412 is generally configured to be cylindrical, that is, the first piston rod 4121, the first piston boss 4122, the second piston rod 4123, the second piston boss 4124 and the third piston rod 4125 are all cylindrical structures and have different lengths, meanwhile, the diameter of the first piston boss 4122 is equal to that of the second piston boss 4124, and the diameter of the first piston rod 4121 is smaller than that of the third piston rod 4125.

When the first passage 421 in the first direction valve 42 communicates the first valve port a with the third valve port c, hydraulic oil in the oil inlet path flows into the first direction valve 42 from the first valve port a, and enters the piston upper chamber 413 through the first passage 421 and a pipeline between the third valve port c and the first oil hole m, so that the hydraulic oil in the piston upper chamber 413 exerts a downward acting force on the first piston boss 4122, in this process, since the second oil hole n of the impactor 41 is also connected with the oil inlet path, the hydraulic oil in the oil inlet path also enters the piston lower chamber 414 from the second oil hole n of the impactor 41, so that the hydraulic oil in the piston lower chamber 414 exerts an upward acting force on the second piston boss 4125, and the piston 412 is simultaneously subjected to upward and downward acting forces. Since the diameters of the first piston boss 4122 and the second piston boss 4124 are the same, and the diameter of the third piston rod 4125 is larger than the diameter of the first piston rod 4121, so that the contact area between the hydraulic oil in the piston lower cavity 414 and the second piston boss 4125 is smaller than the contact area between the hydraulic oil in the piston upper cavity 413 and the first piston boss 4122, and under the condition of the same oil pressure, the downward acting force applied to the first piston boss 4122 by the hydraulic oil in the piston upper cavity 413 is larger than the upward acting force applied to the second piston boss 4124 by the hydraulic oil in the piston lower cavity 414, so that the piston 412 can overcome the upward acting force applied by the hydraulic oil in the piston lower cavity 414 and move downward to impact the driving mechanism 3 or the bucket head 22.

Optionally, as shown in fig. 5 and 6, the impact vibration mechanism 4 further includes an accumulator 43 disposed on the frame body 1, and an oil port of the accumulator 43 is connected to a pipeline between the second oil hole n and the oil inlet path.

Unlike the previous embodiment, the impact vibration mechanism 4 in this embodiment is driven by the hydraulic system and the accumulator 43 together, that is, by providing the accumulator 43, the piston in the impactor 41 is driven by the hydraulic system and the accumulator 43 together, so that when the piston 412 is driven to move upwards by the hydraulic oil, the energy stored in the accumulator 43 is used to assist the piston 412 to move upwards quickly, thereby realizing quick resetting. Specifically, when the first passage 421 in the first direction valve 42 communicates the first valve port a with the third valve port c, the hydraulic oil in the oil inlet path enters the accumulator 43 from the oil port of the accumulator 43 in addition to the upper piston chamber 413 and the lower piston chamber 414, so as to compress the spring in the accumulator 43, and stops the oil inlet when the pressure of the hydraulic oil in the accumulator 43 reaches a set value, so as to store the energy of the compression spring, when the second passage 422 in the first direction valve 42 communicates the second valve port b with the third valve port c, the hydraulic oil in the oil inlet path enters the lower piston chamber 414 from the second oil port n of the impactor 41, at this time, the accumulator 43 releases the energy of the compression spring, so as to rapidly charge the lower piston chamber 414 with the hydraulic oil, so as to accelerate the upward return of the piston 412, so as to shorten the frequency of the vibration impact applied by the impact vibration mechanism 4 to the driving mechanism 3 or the bucket head 22, not only the effect of broken stratum of the fill head 22 of grab bucket device has been improved, the work efficiency of grab bucket device has still been improved.

Optionally, as shown in fig. 5 and 6, a piston low pressure chamber 415 and a piston switching chamber 416 are further disposed in the cylinder block 411 between the piston upper chamber 413 and the piston lower chamber 414, and a third oil hole r communicated with the piston low pressure chamber 415 and a fourth oil hole s communicated with the piston switching chamber 416 are further disposed in the cylinder block 411.

In this embodiment, the piston low pressure chamber 415 and the piston switching chamber 416 are annular grooves formed in the cylinder wall of the cylinder 411, and the third oil hole r communicated with the piston low pressure chamber 415 is communicated with an oil return path through a pipeline, and the oil pressure in the oil return path is low, so that the piston low pressure chamber 415 is always filled with low pressure oil in the up-and-down movement process of the piston 412 and is maintained in a low pressure state. The first direction valve 42 is further provided with a fourth valve port d adapted to be connected to the fourth oil hole s and a fifth valve port e adapted to be connected to the oil inlet path. Specifically, the first direction valve 42 includes a first valve body and a first direction block disposed in the first valve body, the first direction block slides up and down in the first valve body, the first direction block divides an inner space of the first valve body into a first upper cavity and a first lower cavity, the first channel 421 and the second channel 422 are disposed on the first direction block, the first valve port a, the second valve port b, the third valve port c, the fourth valve port d, and the fifth valve port e are disposed on the first valve body, and the fourth valve port d and the fifth valve port e are respectively communicated with the first lower cavity and the first upper cavity. When the first direction changing block in the first direction changing valve 42 slides upwards, as shown in fig. 5, the first channel 421 in the first direction changing valve 42 connects the first port a with the third port c, so that the hydraulic oil in the oil inlet path enters the piston upper chamber 413 of the piston 412, and the piston 412 is urged to move downwards, meanwhile, the second port b and the fourth port d are both connected with the first lower chamber of the first direction changing valve 42, so that the fourth oil hole s connected with the piston converting chamber 416 is connected with the oil return path, and at this time, the piston converting chamber 416 is filled with low-pressure oil; when the first direction changing block in the first direction changing valve 42 slides downwards, as shown in fig. 6, the second passage 422 in the first direction changing valve 42 connects the second valve port b with the third valve port c, but the second valve port b is not connected with the fourth valve port d, hydraulic oil in the oil inlet path enters the piston lower chamber 414 of the piston 412 from the second oil hole n, so that the piston 412 moves upwards, and as the piston 412 moves upwards, the piston converting chamber 416 is connected with the piston lower chamber 414, and at this time, high-pressure oil in the oil inlet path fills the piston converting chamber 416, that is, during the up-and-down movement of the piston 412, the oil pressure in the piston converting chamber 416 is converted between high pressure and low pressure, so as to facilitate the up-and-down movement of the piston 412 controlled by the hydraulic pressure of the first direction changing valve 42. Specifically, the first direction valve 42 is a two-position three-way hydraulic control valve, when the piston 412 moves downward to collide with the driving mechanism 3 or the bucket head 22, hydraulic oil in the oil inlet path enters the first upper chamber of the first direction valve 42 from the fifth port e, the first valve block in the first direction valve 42 is caused to move downward so that the second channel 422 communicates the second port b with the third port c, and the piston 412 is triggered to move from downward to upward, when the piston 412 moves upward until the piston conversion chamber 416 is filled with high-pressure hydraulic oil in the oil inlet path, the high-pressure hydraulic oil sequentially enters the first lower chamber of the first direction valve 42 from the fourth port s and the fourth port d, the first valve block in the first direction valve 42 is caused to move upward so that the first channel 421 communicates the first port a with the third port c, and the second port b communicates with the fourth port d through the first lower chamber of the first direction valve 42, thereby triggering the piston 412 to move from an upward movement to a downward movement. In this way, the reversing action of the first reversing valve 42 is controlled hydraulically to trigger the piston 412 to shift between the upward movement and the downward movement, which is simple in structure and convenient to operate.

Optionally, as shown in fig. 5 and 6, a buffer chamber 417 is further disposed in the cylinder 411, the buffer chamber 417 is located above the piston upper chamber 413, and the upper end of the piston 412 is disposed in the buffer chamber 417 and is adapted to move up and down in the buffer chamber 417.

In this embodiment, the buffer chamber 417 is used to fill with a buffer substance to buffer the piston 412 when the piston 412 moves upward, so as to prevent the piston 412 from hitting the upper cylinder wall of the cylinder 411.

Further, the opening of the buffer chamber 417 is sealingly connected to the first piston rod 4121 of the piston 412 to prevent buffer substance in the buffer chamber 417 from entering the piston upper chamber 413 to affect the movement of the piston 412.

Optionally, the buffer chamber 417 is filled with an inert gas. In this way, when the upper end of the piston 412 moves upwards, the inert gas is compressed, and when the piston 412 moves downwards, the compressed inert gas can apply a downward acting force to the piston 412 to promote the piston 412 to rapidly move downwards, so that the impact force of the piston 412 on the driving mechanism 3 or the bucket head 22 can be increased, and the tooth advancing depth and the crushing effect of the bucket head 22 are further improved.

Alternatively, as shown in fig. 7 and 8, the impact vibration mechanism 4 includes an impactor 41, a second direction changing valve 44 and an accumulator 43, a first passage 441 and a second passage 442 are provided in the second direction changing valve 44, the impactor 41 includes a cylinder 411 and a piston 412 disposed in the cylinder 411, a piston upper chamber 413 and a piston lower chamber 414 are provided in the cylinder 411, and a first oil hole m communicated with the piston upper chamber 413 and a second oil hole n communicated with the piston lower chamber 414 are provided in the cylinder 411; the first passage 441 is adapted to communicate the oil port of the accumulator 43 with the first oil hole m so that hydraulic oil enters the piston upper chamber 413 to cause the piston 412 to move downward to strike the drive mechanism 3 or the head 22, and the second passage 442 is adapted to communicate the oil return passage with the first oil hole m so that hydraulic oil enters the piston lower chamber 414 to cause the piston 412 to move upward.

Different from the above embodiment, the impact vibration mechanism 4 in the present embodiment is directly driven by the energy accumulator 43, and since the energy stored by the energy accumulator 43 once is limited, only the impact vibration mechanism 4 can be driven to complete a plurality of vibration impacts through a liquid-filled energy storage, and the hydraulic system only fills the energy accumulator 43 with the liquid from the oil inlet path after the energy accumulator 43 completes a plurality of vibration impacts, the vibration impact force applied by the impact vibration mechanism 4 to the driving mechanism 3 or the bucket head 22 is intermittent when the energy accumulator 43 is used for driving.

Specifically, the second direction valve 44 is provided with a first port g adapted to be connected to an oil port of the accumulator 43, a second port h adapted to be connected to an oil return path, and a third port i connected to the first oil hole m of the impactor 41, the first passage 441 in the second direction valve 44 is adapted to communicate the first port g with the third port i, so that the first oil hole m of the impactor 41 is communicated with the oil port of the accumulator 43, and the second passage 442 is adapted to communicate the second port h with the third port i, so that the first oil hole m of the impactor 41 is communicated with the oil return path.

Taking the example that the impact vibration mechanism 4 is disposed above the driving mechanism 3, the process of the energy accumulator 43 driving the impact vibration mechanism 4 to work is as follows: when the head 22 of the grab bucket device contacts or is about to contact a harder gravel layer, the impact vibration mechanism 4 is started, at this time, a first passage 441 is arranged in the second reversing valve 44 to communicate the first port g with the third port i, so that the first oil hole m of the impactor 41 is communicated with the oil port of the accumulator 43, and further the piston upper chamber 413 is communicated with the oil port of the accumulator 43, at this time, hydraulic oil in the accumulator 43 flows into the second reversing valve 44 from the first port g of the second reversing valve 44, flows out from the third port i through the first passage 441, and then enters the piston upper chamber 413 along a pipeline between the third port i and the first oil hole m of the impactor 41, so that the hydraulic oil in the piston upper chamber 413 pushes the piston 412 to move downwards to impact the driving mechanism 3 located below the impactor 41; in the downward movement process of the piston 412, the hydraulic oil in the piston lower cavity 414 flows out of the piston lower cavity 414 from the second oil hole n of the impactor 41, and is collected into a pipeline between the first interface g of the second reversing valve 44 and the oil hole of the energy accumulator 43, so that the hydraulic oil flows into the piston upper cavity 413 from the second reversing valve 44; after being impacted, the driving mechanism 3 slides downwards along the frame body 1 to drive the connecting rod 21 and the bucket head 22 to move downwards, meanwhile, the driving mechanism 3 slides upwards under the action of a reaction force to reset, and drives the connecting rod 21 and the bucket head 22 to reset upwards, so that one-time impact is completed; after the piston 412 impacts the driving mechanism 3, the second reversing valve 44 starts reversing, the second passage 442 communicates the second port h with the third port i, so that the first oil hole m of the impactor 41 is communicated with the oil return path, and the piston upper chamber 413 is communicated with the oil return path, at this time, hydraulic oil in the accumulator 43 enters the piston lower chamber 414 from the second oil hole n of the impactor 41, and the hydraulic oil in the piston lower chamber 414 pushes the piston 412 to move upwards to leave the driving mechanism 3; this is repeated to perform the vibration impact of the impact vibration mechanism 4 on the driving mechanism 3, and further, the vibration impact of the impact vibration mechanism 4 on the bucket head 22 is realized by being transmitted to the bucket head 22 through the driving mechanism 3.

Further, a three-way valve is arranged at an oil port of the energy accumulator 43, and three valve ports of the three-way valve are respectively communicated with the oil port of the energy accumulator 43, the first port g of the second reversing valve 44 and the oil inlet path. Therefore, after the accumulator 43 completes a plurality of times of vibration impact, the oil inlet path of the hydraulic system fills the accumulator 43 with liquid and stores energy through the three-way valve.

Further, as shown in fig. 7 and 8, the second direction valve 44 is further provided with a fourth port j adapted to be connected to the fourth oil hole s and a fifth port k adapted to be connected to the oil port of the accumulator 43, and when the first passage 441 communicates the oil port of the accumulator 43 with the first oil hole m, the fourth port j and the fifth port k of the second direction valve 44 communicate with each other.

In this embodiment, the second direction valve 44 includes a second valve body and a second direction block disposed in the second valve body, the second direction block slides up and down in the second valve body, the second direction block divides an inner space of the second valve body into a second upper cavity and a second lower cavity, the first passage 441 and the second passage 442 are disposed on the second direction block, the first port g, the second port h, the third port i, the fourth port j, and the fifth port k are disposed on the second valve body, and the fourth port j and the fifth port k are respectively communicated with the second lower cavity and the second upper cavity. When the second direction changing block in the second direction changing valve 442 slides upwards, as shown in fig. 7, the first passage 441 in the second direction changing valve 44 communicates the first port g with the third port i, so that the hydraulic oil in the accumulator 43 enters the piston upper chamber 413 of the piston 412, and the piston 412 is urged to move downwards, and meanwhile, the second port h and the fourth port j are both communicated with the second lower chamber of the second direction changing valve 442, so that the fourth oil hole s communicated with the piston converting chamber 416 is communicated with the oil return path, and at this time, the piston converting chamber 416 is filled with low-pressure oil; when the second direction changing block in the second direction changing valve 442 slides downward, as shown in fig. 8, the second passage 442 in the second direction changing valve 44 communicates the second port h with the third port i, but the second port h does not communicate with the fourth port j, the hydraulic oil in the accumulator 43 enters the piston lower chamber 414 of the piston 412 from the second oil hole n, so as to cause the piston 412 to move upward, and the piston converting chamber 416 communicates with the piston lower chamber 414 along with the upward movement of the piston 412, at this time, the high-pressure oil in the accumulator 43 fills the piston converting chamber 416, that is, during the upward and downward movement of the piston 412, the oil pressure in the piston converting chamber 416 is converted between high pressure and low pressure, so as to facilitate the upward and downward movement of the piston 412 by the hydraulic control of the second direction changing valve 44. Specifically, the principle of the second direction valve 44 for controlling the piston 412 to move up and down is the same as that of the first direction valve 42, and thus, the description thereof is omitted. In this way, the reversing action of the second reversing valve 44 is controlled hydraulically to trigger the piston 412 to shift between the upward movement and the downward movement, and the structure is simple and the operation is convenient.

Further, the first direction valve 42 and the second direction valve 44 may have the same structure, for example, the first direction valve 42 and the second direction valve 44 both adopt two-position three-way hydraulic valves or two-position three-way electromagnetic valves; different configurations are possible, for example, the first direction valve 42 is a two-position three-way hydraulic valve, and the second direction valve 44 is a two-position three-way solenoid valve, which is not limited in this embodiment.

Alternatively, as shown in fig. 1, the driving mechanism 3 includes a grapple cylinder 31, a slider 32, and a carriage 33, the slider 32 is sleeved on the upper end of the grapple cylinder 31, one end of the carriage 33 is connected with the telescopic shaft of the grapple cylinder 31, the carriage 33 is located outside the grapple cylinder 31 and connected with the telescopic shaft of the grapple cylinder 31, and the other end of the link 21 is hinged with the carriage 33 to drive the grapple head 22 to open or close, and the impact vibration mechanism 4 impacts the slider 32 to transmit the vibration impact to the grapple head 22.

In this embodiment, the driving mechanism 3 drives the bucket head 22 to open or close in a hydraulic driving manner, and the reciprocating motion of the grab bucket cylinder 31 in the driving mechanism 3 is realized by using the circulating action of the oil circuit of the hydraulic system, so that the driving mechanism 3 can reduce the consumption of electric energy while realizing continuous operation. Specifically, the grab bucket cylinder 31 of the driving mechanism 3 is connected with an oil inlet path and an oil return path of the hydraulic system, when the hydraulic system drives the telescopic shaft in the grab bucket cylinder 31 to move downwards, the telescopic shaft of the grab bucket cylinder 31 drives the sliding frame 33 arranged on the telescopic shaft to slide downwards, so that the connecting rod 21 hinged on the sliding frame 33 rotates around the hinged point and moves downwards to enable the bucket head 22 hinged at the other end of the connecting rod 21 to be closed, and soil is conveniently transported to the ground from the groove of the continuous wall; when the hydraulic system drives the telescopic shaft in the grab bucket cylinder 31 to move upwards, the sliding frame 33 arranged on the telescopic shaft is driven to slide upwards, so that the connecting rod 21 hinged on the sliding frame 33 rotates around the hinged point and moves upwards to promote the bucket head 22 hinged at the other end of the connecting rod 21 to be opened, so that soil in the bucket head 22 is conveniently discharged to a specified area, or the bucket head 22 is conveniently grabbed in a groove of a continuous wall. The piston 412 of the impact vibration mechanism 4 is located right above the sliding block 32 of the driving mechanism 3, and the piston 412 strikes the sliding block 32 when moving downwards, so that the sliding block 32 drives the grab bucket cylinder 31 to slide downwards, and the sliding block 32 slides upwards to drive the grab bucket cylinder 31 to reset by the reaction force of the frame body 1 when sliding downwards to a certain position, and reciprocates so as to form up-and-down vibration, and the sliding block 32 transmits the vibration impact to the grab bucket cylinder 31, and then transmits the vibration impact to the bucket head 22 through the sliding frame 33 and the connecting rod 21. Therefore, the transmission of vibration impact is completed, the structure is simple, and the manufacture is easy.

Further, as shown in fig. 2, a first shaft hole 321 is formed in the slider 32, a cylinder base 311 is formed at the upper end of the grab cylinder 31, a second shaft hole 3112 is formed in the cylinder base 311, and the slider 32 and the cylinder base 311 are connected by a pin at the first shaft hole 321 and the second shaft hole 3112. Specifically, the first shaft hole 321 penetrates the slider 32 in the horizontal direction, the second shaft hole 3112 penetrates the cylinder block 311 in the horizontal direction, and the first shaft hole 321 is equal to or slightly larger than the second shaft hole 3112 to facilitate the installation of the pin shaft. So, slider 32 and grab bucket hydro-cylinder 31 form through the round pin axle and can dismantle the connection, connect firm and convenient dismantlement, and the slider 32 of also being convenient for simultaneously transmits the vibration impact to grab bucket hydro-cylinder 31, and then transmits to on the fill head 22.

Optionally, as shown in fig. 2, a first limiting structure 12 is disposed on the frame body 1, a second limiting structure 322 is disposed on the sliding block 32, and the first limiting structure 12 is matched with the second limiting structure 322 to limit the displacement of the sliding block 32 in the upward and downward sliding directions. In this way, the displacement of the slide block 32 sliding upwards and downwards is limited by the first limiting structure 12 and the second limiting structure 322, so that the displacement of the slide block 32 sliding upwards and downwards is controlled within a proper range, that is, the amplitude of the up-and-down vibration of the slide block 32 is controlled within a proper range, and then the amplitude of the up-and-down vibration of the bucket head 22 is limited, so that the bucket head 22 can better enter the teeth and crush the ground; moreover, when the slide block 32 slides downwards after being impacted by the piston 412, the second limit structure 322 on the slide block 32 collides with the first limit structure 12 on the frame body 1, so that the frame body 1 can apply an upward reaction force to the slide block 32, and the slide block 32 is forced to slide upwards to be reset.

Optionally, as shown in fig. 2, the first limiting structure 12 is a limiting groove, and the second limiting structure 322 is a limiting protrusion, which is disposed in the limiting groove and adapted to slide up and down in the limiting groove. In the embodiment, the frame body 1 is provided with the limiting groove, the sliding block 32 is provided with the limiting protrusion, and the limiting protrusion is inserted into the limiting groove, so that when the sliding block 32 slides downwards, the limiting protrusion also slides downwards in the limiting groove, and when the limiting protrusion slides to collide with the lower groove wall of the limiting groove, the lower groove wall of the limiting groove applies an upward reaction force to the sliding block 32 to enable the sliding block 32 to slide upwards to reset, and the structure is simple and easy to manufacture; meanwhile, as the slide block 32 is connected with the cylinder seat 311 at the upper end of the grab bucket cylinder 31 through the pin shaft, the slide block 32 slides up and down in the limit groove to drive the grab bucket cylinder to move downwards, so that the grab bucket cylinder 31 has a certain floating function and is further transferred to the bucket head 22, and the bucket head 22 vibrates.

Further, the stroke of the sliding block sliding up and down can be adjusted by limiting the size of the gap between the limiting protrusion and the limiting groove in the vertical direction, so that the vibration amplitude of the bucket head 22 can be adjusted. For example, in one embodiment, the range of the gap between the limiting protrusion and the limiting groove in the vertical direction is less than 10mm, so that the range of the up-and-down movement of the bucket cylinder 31 driven by the slider 32 is within 10mm, and the bucket head 22 generates micro-vibration with smaller amplitude, so as to shorten the time for the bucket head 22 to enter the teeth or break the ground layer, and improve the grabbing effect of the grab device.

Further, as shown in fig. 2, the slider 32 is further provided with a hitting protrusion 323, and the hitting protrusion 323 is located at the upper end of the slider 32. In this embodiment, the collided protrusion 323 is formed by the upper end of the slider 32 protruding toward the piston 412, the collided protrusion 323 is located right below the piston 412, the piston 412 collides with the collided protrusion 323 of the slider 32 when moving downward, and the upper end surface of the collided protrusion 323 is a plane so as to form surface-to-surface contact with the piston 412 and better bear the collision of the piston 412. In this way, the stroke of the up-and-down movement of the piston 412 is reduced by providing the hitting protrusion 323 to shorten the distance between the slider 32 and the piston 412, so that the frequency of the vibration impact applied to the slider 32 by the piston 412 can be increased, and the tooth depth of the bucket head 22 and the effect of crushing the ground layer can be further improved.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims (10)

1. A diaphragm wall grab bucket apparatus, comprising:

a frame body (1);

the grab bucket mechanism (2) comprises a connecting rod (21) and a bucket head (22), one end of the connecting rod (21) is hinged with the bucket head (22), and the bucket head (22) is hinged with the lower end of the frame body (1);

the driving mechanism (3) is arranged in the inner space of the frame body (1), and the driving mechanism (3) is hinged with the other end of the connecting rod (21) so as to drive the bucket head (22) to be opened or closed;

and the impact vibration mechanism (4) is arranged on the frame body (1) and is suitable for applying vibration impact to the bucket head (22).

2. A continuous wall grab bucket arrangement according to claim 1, wherein the impact vibration mechanism (4) is arranged in the inner space of the frame body (1) above or below the drive mechanism (3).

3. The diaphragm wall grab bucket device according to claim 1 or 2, wherein the impact vibration mechanism (4) comprises an impactor (41) and a first reversing valve (42), a first channel (421) and a second channel (422) are arranged in the first reversing valve (42), the impactor (41) comprises a cylinder body (411) and a piston (412), one end of the piston (412) extends into the cylinder body (411), the other end of the piston extends out of the cylinder body (411), a piston upper cavity (413) and a piston lower cavity (414) are arranged in the cylinder body (411), and a first oil hole (m) communicated with the piston upper cavity (413) and a second oil hole (n) communicated with the piston lower cavity (414) are arranged on the cylinder body (411); the first passage (421) is suitable for communicating an oil inlet passage with the first oil hole (m) so as to enable hydraulic oil to enter the piston upper cavity (413) and enable the piston (412) to move downwards to impact the driving mechanism (3) or the bucket head (22); the second passage (422) is adapted to communicate an oil return passage with the first oil hole (m) to allow hydraulic oil to enter the piston lower chamber (414) to cause the piston (412) to move upward.

4. The continuous wall grab bucket device of claim 3, wherein the impact vibration mechanism (4) further comprises an energy accumulator (43) arranged on the frame body (1), and an oil port of the energy accumulator (43) is connected to a pipeline between the second oil hole (n) and the oil inlet path.

5. The diaphragm grab bucket device according to claim 3, wherein a piston low pressure chamber (415) and a piston conversion chamber (416) are further arranged in the cylinder body (411) and located between the piston upper chamber (413) and the piston lower chamber (414), a third oil hole (r) communicated with the piston low pressure chamber (415) and a fourth oil hole(s) communicated with the piston conversion chamber (416) are further arranged in the cylinder body (411), and the third oil hole (r) is suitable for being connected with the oil return path.

6. A diaphragm grab device according to claim 3, characterized in that a buffer chamber (417) is further provided in the cylinder (411), the buffer chamber (417) being located above the piston upper chamber (413), the upper end of the piston (412) being placed in the buffer chamber (417) and adapted to move up and down in the buffer chamber (417).

7. The diaphragm grab bucket device according to claim 1 or 2, wherein the impact vibration mechanism (4) comprises an impactor (41), a second reversing valve (44) and an energy accumulator (43), a first passage (441) and a second passage (442) are arranged in the second reversing valve (44), the impactor (41) comprises a cylinder body (411) and a piston (412) arranged in the cylinder body (411), a piston upper cavity (413) and a piston lower cavity (414) are arranged in the cylinder body (411), and a first oil hole (m) communicated with the piston upper cavity (413) and a second oil hole (n) communicated with the piston lower cavity (414) are arranged on the cylinder body (411); the first passage (441) is adapted to communicate an oil port of the accumulator (43) with the first oil hole (m) to allow hydraulic oil to enter the piston upper chamber (413), causing the piston (412) to move downward to strike the drive mechanism (3) or the head (22); the second passage (442) is adapted to communicate an oil return passage with the first oil hole (m) to allow hydraulic oil to enter the piston lower chamber (414) to cause the piston (412) to move upward.

8. The continuous wall grab bucket device of claim 1, wherein the driving mechanism (3) comprises a grab bucket cylinder (31), a sliding block (32) and a sliding frame (33), the sliding block (32) is sleeved on the upper end of the grab bucket cylinder (31), the sliding frame (33) is positioned outside the grab bucket cylinder (31) and connected with a telescopic shaft of the grab bucket cylinder (31), the other end of the connecting rod (21) is hinged with the sliding frame (33) to drive the bucket head (22) to open or close, and the impact vibration mechanism (4) transmits vibration impact to the bucket head (22) by impacting the sliding block (32).

9. The continuous wall grab bucket device of claim 8, wherein a first limit structure (12) is arranged on the frame body (1), a second limit structure (322) is arranged on the sliding block (32), and the first limit structure (12) and the second limit structure (322) are matched to limit the displacement of the sliding block (32) in the upward sliding and downward sliding.

10. The continuous wall grab bucket device of claim 9, wherein the first limiting structure (12) is a limiting groove, and the second limiting structure (322) is a limiting protrusion, and the limiting protrusion is arranged in the limiting groove and is suitable for sliding up and down in the limiting groove.

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