A ditch opening device for water conservancy project construction

Abstract

The present invention belongs to the technical field of grab buckets, and specifically relates to a ditch opening device for water conservancy project construction, comprising a fixed module, a connecting shaft, and a grab bucket module connected below the fixed module; the connecting shaft is rotatably connected to the bottom of the fixed module, and the grab bucket module is hinged on the connecting shaft; the grab bucket module comprises a first grab bucket shell and a second grab bucket shell; the first grab bucket shell and the second grab bucket shell are symmetrically hinged on the connecting shaft; the grab bucket module also comprises a movable plate and a driving unit; the movable plates are indirectly driven to move toward each other by merging the first grab bucket shell and the second grab bucket shell without adding additional driving equipment, and the first bent arm and the second bent arm cooperate with the first gear to drive the gear transmission group to start, thereby controlling the two movable plates to move toward each other, which can save costs, and has a low failure rate and will not affect operations. At the same time, through the two movable plates moving toward each other, the separation of silt and water can be achieved as much as possible, the outflow of silt can be reduced, and environmental pollution can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of grab buckets, in particular to a ditch opening device for water conservancy project construction. Background Art

[0002] Ditch excavation generally requires the use of mechanical grab buckets. Both ditch excavation and river channel excavation are based on the removal and grabbing of bottom mud, and the equipment used generally uses mechanical grab buckets for excavation.

[0003] A Chinese patent with publication number CN112429637A discloses a sludge cleaning grab bucket, including a fixed plate, a hydraulic rod, a connecting arm, a grab bucket and a grab bucket cover; the upper end of the hydraulic rod is fixed to the lower part of the fixed plate, and the lower end is fixedly connected to the grab bucket cover, the upper end of the connecting arm is hinged to the fixed plate, and the lower end is hinged to the middle of the grab bucket, and the upper part of the grab bucket is hinged to the grab bucket cover; the hydraulic rod is telescopic to drive the connecting arm to rotate and then drive the grab bucket to open and close; the present invention adopts the articulation between multiple connecting plates and connecting arms and the hydraulic rod to cooperate in driving the opening and closing of the grab bucket to grab and clean the sludge and open and dump it; a drainage hole is provided on the grab bucket to facilitate the discharge of grabbed water when grabbing the sludge, thereby improving the sludge cleaning effect; a U-shaped handle is provided on the upper part of the fixed plate, which is convenient for using a mechanical crane to control the extension into the sewer to clean the sludge, without the need for manual labor, saving manpower and material resources.

[0004] In the current existing technology, when grabbing and excavating ditch bottom silt, a large amount of river water is easily grabbed in the grab bucket. During the extraction process, if the water is only drained through the drainage holes, it is also necessary to consider whether the silt will flow out with the drainage holes. Since the silt at the bottom of the ditch is mixed with water, if it is directly grabbed and taken out, the water will be carried out with the silt during the drainage, thus causing environmental pollution. It is understandable that in order to improve the drainage of water in the grab bucket, the size of the drainage holes needs to be increased, but increasing the size of the drainage holes makes it more likely to cause silt leakage.

[0005] To this end, the present invention provides a ditch opening device for water conservancy project construction. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a ditch opening device for water conservancy project construction according to the present invention comprises:

[0008] A fixed module, and a grab module connected below the fixed module;

[0009] A connecting shaft is rotatably connected to the lower portion of the fixed module, and the grab module is hinged on the connecting shaft;

[0010] The grab bucket module includes a first grab bucket shell and a second grab bucket shell; the first grab bucket shell and the second grab bucket shell are symmetrically hinged on the connecting shaft;

[0011] The grab module also includes a movable plate and a driving unit; the movable plate is movably connected to the inside of the first grab shell and the second grab shell and is driven by the driving unit; the driving unit is used to drive the movable plates symmetrically arranged in the first grab shell and the second grab shell to move toward each other during the merging stage of the first grab shell and the second grab shell, thereby squeezing the sludge in the grab module.

[0012] Preferably, the driving unit includes:

[0013] A first curved arm fixedly connected to the outside of the first grab shell, and a second curved arm fixedly connected to the outside of the second grab shell; the first curved arm and the second curved arm are arranged concentrically;

[0014] A first gear is rotatably connected to the outside of the first grab shell and the outside of the second grab shell, and the two first gears are symmetrically arranged; teeth are provided on the side walls of the first curved arm and the second curved arm facing the first gear, and the first curved arm and the second curved arm are respectively engaged with the first gear;

[0015] The gear transmission group is arranged inside the first grab shell and the second grab shell. When the first gear is driven by the first curved arm and the second curved arm, the gear transmission group is started to drive the two movable plates to move toward each other.

[0016] Preferably, the gear transmission group includes:

[0017] A synchronous gear coaxially fixed to the first gear, and the synchronous gear is arranged on the inner side of the first grab shell and the second grab shell;

[0018] A second gear is rotatably connected to the inner sides of the first grab shell and the second grab shell, and the second gear is engaged with the first gear; a transmission rod is fixed to the middle of the second gear, and the transmission rod extends to the inside of the first grab shell and the second grab shell.

[0019] Preferably, a rope is fixedly connected to the side wall of the movable plate relative to the transmission rod, and one end of the rope is fixedly connected to the movable plate, and the other end passes through the transmission rod and is fixedly connected to the transmission rod.

[0020] Preferably, a rope is fixed to one side of the movable plate, and a plurality of sliding rods are fixed to the other side; the sliding rods pass through the side walls of the first grab shell and the second grab shell; a first spring is sleeved on the sliding rod, and the first spring is used to connect the movable plate with the first grab shell and the second grab shell.

[0021] Preferably, a gear cover is further provided inside the grab bucket module, and the gear cover is fixed to the inner side of the first grab bucket shell and the second grab bucket shell by screws, and is used to enclose the synchronous gear and the second gear; the transmission rod passes through the gear cover; the movable plate is in sliding engagement with the gear cover;

[0022] The inner sides of the first grab bucket shell and the second grab bucket shell are fixedly connected with limiting blocks for clamping the gear cover.

[0023] Preferably, the bottom of the first grab shell and the second grab shell are further provided with fixed cutting teeth, and the bottom is also provided with a movable groove perpendicular to the fixed cutting teeth; a first limiting piece is fixedly connected to the outer side of the first grab shell, and the second bent arm slides with the first limiting piece; a second limiting piece is fixedly connected to the outer side of the second grab shell, and the first bent arm slides with the second limiting piece.

[0024] Preferably, a movable cutting tooth is also provided on the upper surface of the fixed cutting tooth, and the movable cutting tooth is slidably connected to the surface of the fixed cutting tooth; L-shaped rods are fixed at both ends of the movable cutting tooth, and the L-shaped rods are slidably connected in the movable groove; the side wall of the L-shaped rod is fixed with a limiting rod, and the limiting rod is connected to the side wall of the movable groove; a second spring is sleeved on the limiting rod, and the second spring is used to connect the side wall of the movable groove and the L-shaped rod.

[0025] Preferably, a connecting rod is fixed to the bottom of the movable plate, and a triangular block is fixed to the end of the connecting rod, and the triangular block is slidably connected in the movable groove as the movable plate moves; when the triangular block moves with the movable plate, it contacts and squeezes the inclined surface of the end of the L-shaped rod, driving the L-shaped rod to slide horizontally in the movable groove.

[0026] Preferably, the fixing module includes a fixing seat, a hydraulic cylinder and a reinforcing rib; the top of the hydraulic cylinder is hinged to the outside of the fixing seat, and the two hydraulic cylinders are symmetrically arranged; the reinforcing rib is fixed to the outside of the fixing seat and is staggered with the hydraulic cylinder; the connecting shaft is rotatably connected to the reinforcing rib.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1. The ditch opening device for water conservancy project construction described in the present invention indirectly drives the movable plates to move toward each other by combining the first grab shell and the second grab shell, without adding additional driving equipment. The first curved arm and the second curved arm cooperate with the first gear to drive the gear transmission group to start, thereby controlling the two movable plates to move toward each other. This can save costs, and has a low failure rate without affecting operations. At the same time, the two movable plates can move toward each other to achieve the separation of silt and water as much as possible, thereby reducing the carry-out of silt when water is drained out, avoiding environmental pollution.

[0029] 2. The ditch opening device for water conservancy project construction described in the present invention can realize the movement of the movable plates toward each other through the cooperation of the teeth on the first curved arm and the second curved arm with the first gear, and cooperate with the gear transmission group, the transmission rod and the rope, and at the same time realize the high-frequency behavior of the movable plates to quickly reset after being stretched, so that the grab bucket module can drain water while reducing the carry-out of silt during transfer, and at the same time, it can drain the silt as cleanly as possible when discharging it. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 It is a perspective view of the present invention;

[0032] Figure 2 It is a front view of the present invention;

[0033] Figure 3 is a partial cross-sectional view of the present invention;

[0034] Figure 4 is a top view of the present invention;

[0035] Figure 5 It is a partial stereogram of the present invention;

[0036] Figure 6 It is a three-dimensional diagram of the first grab shell of the present invention;

[0037] Figure 7 yes Figure 6 Enlarged view of part a;

[0038] Figure 8 yes Figure 4 Sectional view at A-A in the middle;

[0039] In the figure: 10, fixed seat; 11, hydraulic cylinder; 12, reinforcing rib; 13, connecting shaft; 20, first grab shell; 200, first bent arm; 201, first limiter; 21, second grab shell; 210, second bent arm; 211, second limiter; 22, first gear; 221, synchronous gear; 23, gear cover; 24, movable plate; 241, sliding rod; 242, first spring; 243, connecting rod; 244, triangular block; 25, movable cutting tooth; 251, L-shaped rod; 252, limit rod; 253, second spring; 26, second gear; 261, transmission rod; 27, fixed cutting tooth; 28, limit block; 29, movable groove. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0041] like Figures 1 to 8 As shown, a ditch opening device for water conservancy project construction described in an embodiment of the present invention includes a fixed module, a connecting shaft 13 and a grab module connected below the fixed module; the connecting shaft 13 is rotatably connected to the bottom of the fixed module, and the grab module is hinged on the connecting shaft 13; the grab module includes a first grab shell 20 and a second grab shell 21; the first grab shell 20 and the second grab shell 21 are symmetrically hinged on the connecting shaft 13; the grab module also includes a movable plate 24 and a driving unit; the movable plate 24 is movably connected to the inside of the first grab shell 20 and the second grab shell 21, and is driven by the driving unit; the driving unit is used to drive the movable plates 24 symmetrically arranged in the first grab shell 20 and the second grab shell 21 to move toward each other during the merging stage of the first grab shell 20 and the second grab shell 21, so as to squeeze the silt in the grab module.

[0042] When grabbing and excavating the silt at the bottom of the ditch, a large amount of river water is easily grabbed in the grab bucket. During the extraction process, if the water is only drained through the drainage holes, it is also necessary to consider whether the silt will flow out with the drainage holes. Since the silt at the bottom of the ditch is mixed with water, if it is directly grabbed and taken out, the water will be taken out with the silt during the drainage, thus causing environmental pollution. It is understandable that in order to improve the drainage of water in the grab bucket, the size of the drainage holes needs to be increased, but increasing the size of the drainage holes is more likely to cause silt leakage;

[0043] In one embodiment of the present invention, when excavating the ditch bottom silt, an excavator or crane equipment is used to sink the device to the place where the ditch bottom silt needs to be excavated, and then the fixed module is used to drive the first grab shell 20 and the second grab shell 21 to separate. At this time, the opened first grab shell 20 and the second grab shell 21 can penetrate into the silt bottom, and then, the fixed module is used to drive the first grab shell 20 and the second grab shell 21 to merge. At this time, the first grab shell 20 and the second grab shell 21 are filled with the captured ditch bottom silt, accompanied by a large amount of water. During the process of merging the first and second grab bucket shells 20, 21, controlled by an excavator (for illustration purposes) and a fixed module, the movable plates 24 are driven by the drive unit to move toward each other. This compresses the sludge and water mixture between the two movable plates 24, allowing the water mixed in the sludge to be fully discharged. The sludge and water within the underwater merged first and second grab bucket shells 20, 21 (hereinafter referred to as the bucket chamber) are now separated as much as possible. The excavator then drives the device upward. After it moves upward and out of the river channel, the water separated from the sludge within the bucket chamber is discharged through the gaps in the bucket chamber.

[0044] It is worth noting that in the above description, two movable plates 24 are provided, which are respectively located inside the first grab shell 20 and the second grab shell 21, and when the first grab shell 20 and the second grab shell 21 are merged, the two movable plates 24 will move toward each other, thereby compressing the silt in the bucket cavity, so that the water in the silt can be discharged as much as possible. At this point, after the device is brought out of the water, the water will be discharged first. Since the silt is compressed, the water discharged through the gaps in the bucket cavity or the drain holes provided will not bring out excessive silt, and will not cause pollution to the environment.

[0045] like Figures 1 to 5 As shown, the driving unit includes:

[0046] A first curved arm 200 fixedly connected to the outside of the first grab shell 20, and a second curved arm 210 fixedly connected to the outside of the second grab shell 21; the first curved arm 200 and the second curved arm 210 are arranged concentrically;

[0047] The first gear 22 is rotatably connected to the outside of the first grab shell 20 and the outside of the second grab shell 21, and the two first gears 22 are symmetrically arranged; the first curved arm 200 and the second curved arm 210 are provided with teeth on the side walls facing the first gear 22, and the first curved arm 200 and the second curved arm 210 are respectively engaged with the first gear 22;

[0048] The gear transmission group is arranged inside the first grab shell 20 and the second grab shell 21. When the first gear 22 is driven by the first curved arm 200 and the second curved arm 210, the gear transmission group is started to drive the two movable plates 24 to move toward each other.

[0049] As mentioned above, the first grab shell 20 and the second grab shell 21 can use the driving unit to drive the movable plate 24 to move toward each other during the merging stage. Specifically, in one embodiment of the present invention, when the first grab shell 20 and the second grab shell 21 are merged, the first curved arm 200 and the second curved arm 210 will slide on the outer walls of the second grab shell 21 and the first grab shell 20, and engage with the first gear 22 respectively provided on the first grab shell 20 and the second grab shell 21. When the first gear 22 rotates, it can drive the gear transmission group to start, and the gear transmission group is used to drive the two movable plates 24 to move toward each other. That is to say, in this embodiment, The movable plates 24 are indirectly driven to move toward each other only by merging the first grab shell 20 and the second grab shell 21. This is for the purpose of not adding additional driving equipment. It is understandable that if the movable plates 24 are driven by motors or hydraulic equipment, firstly, underwater operations require high driving equipment, resulting in increased costs. Secondly, prolonged underwater operations can easily cause damage to the driving equipment, thereby affecting operations. Based on the above, in this embodiment, the first curved arm 200 and the second curved arm 210 cooperate with the first gear 22 to drive the gear transmission group to start, thereby controlling the two movable plates 24 to move toward each other, which can save costs and has a low failure rate without affecting operations.

[0050] like Figures 1 to 5 As shown, the gear transmission group includes:

[0051] A synchronous gear 221 coaxially fixed to the first gear 22, and the synchronous gear 221 is arranged on the inner side of the first grab shell 20 and the second grab shell 21;

[0052] A second gear 26 is rotatably connected to the inner sides of the first grab shell 20 and the second grab shell 21, and the second gear 26 is engaged with the first gear 22; a transmission rod 261 is fixed to the middle of the second gear 26, and the transmission rod 261 extends to the inside of the first grab shell 20 and the second grab shell 21.

[0053] like Figures 1 to 5 As shown, a rope is fixedly connected to the side wall of the movable plate 24 relative to the transmission rod 261 , and one end of the rope is fixedly connected to the movable plate 24 , and the other end passes through the transmission rod 261 and is fixedly connected to the transmission rod 261 .

[0054] like Figures 1 to 5 As shown, a rope is fixed to one side of the movable plate 24, and a plurality of slide bars 241 are fixed to the other side; the slide bars 241 pass through the side walls of the first grab shell 20 and the second grab shell 21; a first spring 242 is sleeved on the slide bar 241, and the first spring 242 is used to connect the movable plate 24 with the first grab shell 20 and the second grab shell 21.

[0055] In view of the above, in one embodiment, the gear transmission group includes a synchronous gear 221 and a second gear 26. Specifically, when the first gear 22 is engaged and rotated, it can drive the coaxial synchronous gear 221 to rotate. The synchronous gear 221 is engaged with the second gear 26. Therefore, when the synchronous gear 221 rotates, the second gear 26 can also rotate synchronously. The second gear 26 is rotatably connected to the side walls of the first grab shell 20 and the second grab shell 21 via the transmission rod 261. Therefore, when the second gear 26 rotates, it can also wind the rope (not shown in the figure), thereby pulling the movable plate 24 to move toward each other; it is worth noting that in the initial state of the movable plate 24, due to the elastic force of the first spring 242, there is a gap between the side walls of the first grab shell 20 and the second grab shell 21. When the rope is wound, the movable plate 24 will move toward each other. At this time, the first spring 242 is stretched and elastic potential energy is generated. It should be noted here that since the first curved arm 200 and the second curved arm 210 are provided with teeth, and the teeth are The teeth are engaged with the first gear 22, but the number of teeth on the first curved arm 200 and the second curved arm 210 is limited. Specifically, when the first grab shell 20 and the second grab shell 21 are completely merged, the teeth on the first curved arm 200 and the second curved arm 210 are disengaged from the first gear 22. At this time, the first gear 22 and the synchronous gear 221 are no longer limited by the teeth on the first curved arm 200 and the second curved arm 210. Furthermore, a torsion spring is sleeved on the central axis of the first gear 22 and the synchronous gear 221. After the first gear 22 is driven by the teeth to rotate, the torsion spring is also compressed. When the first gear 22 is disengaged from the teeth, the torsion spring resets, and the first gear 22 and the synchronous gear 221 are quickly reset, while driving the second gear 26 to reverse. The reverse rotation of the second gear 26, combined with the elastic potential energy of the first spring 242, can quickly reset the movable plate 24 to its initial state, thereby generating a vibration effect, which can vibrate and remove the sludge adhered to the movable plate 24 and the bucket cavity, thereby preventing sludge from adhering to the movable plate 24 and incomplete discharge.

[0056] In addition, since the first grab shell 20 and the second grab shell 21 are in a merged state at this time, although the first gear 22, the synchronous gear 221 and the second gear 26 are reset, and the movable plate 24 is also in a reset state, when the first grab shell 20 and the second grab shell 21 are separated from the water surface and transferred to the silt stacking area, the first grab shell 20 and the second grab shell 21 still need to be separated and the silt is discharged. At this time, the first curved arm 200 and the second curved arm 210 are displaced in the opposite direction, driving the first gear 22 to flip. At this time, the synchronous gear 221 is reversed, and the second gear 26 is also reversed. Note: the reversal of the second gear 26 here is different from the reversal after the first gear 22 is separated from the teeth. It can be understood that: assuming that the first grab shell 20 and the second grab shell 21 are merged (with Figure 2As shown in the figure, the first curved arm 200 drives the first gear 22 meshed with it to rotate 360° clockwise (depending on the implementation, it can be rotated to a smaller or larger angle), then the synchronous gear 221 rotates 360° clockwise, and the second gear 26 meshed with the synchronous gear 221 rotates 360° counterclockwise and winds the rope; when the first gear 22 is disengaged from the teeth, the first gear 22 and the synchronous gear 221 rotate 360° counterclockwise, and the second gear 26 rotates 360° clockwise; when the first grab shell 20 and the second grab shell 21 are separated, the first curved arm 200 is meshed with the first gear 22, at this time the first gear 22 rotates 360° counterclockwise, and the synchronous gear 221 rotates 360° counterclockwise, and the second gear 26 rotates 360° clockwise. When the teeth on the first curved arm 200 are disengaged from the first gear 22, The first gear 22 and the synchronous gear 221 rotate 360° clockwise, and the second gear 26 rotates 360° counterclockwise; that is, taking the merging and opening of the first grab shell 20 and the second grab shell 21 as one cycle, the second gear 26 needs to first rotate 360° counterclockwise, then rotate 720° clockwise, and then rotate 360° counterclockwise. During this cycle, the movable plate 24 will be stretched twice and reset twice after stretching. Based on the above, through the teeth on the first curved arm 200 and the second curved arm 210 cooperating with the first gear 22, the gear transmission group and the transmission rod 261 and the rope, the movable plate 24 can be moved toward each other, and at the same time, the high-frequency behavior of the movable plate 24 quickly resetting after stretching can be achieved, so that when the grab module is transferred, water can be drained out while reducing the outflow of silt, and at the same time, the silt can be discharged as cleanly as possible.

[0057] like Figures 1 to 2 As shown, a gear cover 23 is further provided inside the grab module. The gear cover 23 is screwed to the inner side of the first grab shell 20 and the second grab shell 21 to enclose the synchronous gear 221 and the second gear 26. The transmission rod 261 passes through the gear cover 23. The movable plate 24 is in sliding engagement with the gear cover 23.

[0058] The inner sides of the first grab shell 20 and the second grab shell 21 are fixedly connected with limiting blocks 28 for clamping the gear cover 23 .

[0059] like Figures 3 to 8 As shown, the bottom of the first grab shell 20 and the second grab shell 21 are also provided with fixed cutting teeth 27, and the bottom is also provided with a movable groove 29 perpendicular to the fixed cutting teeth 27; a first limiting piece 201 is fixedly connected to the outer side of the first grab shell 20, and the second bent arm 210 slides with the first limiting piece 201; a second limiting piece 211 is fixedly connected to the outer side of the second grab shell 21, and the first bent arm 200 slides with the second limiting piece 211.

[0060] like Figures 3 to 8As shown, a movable cutting tooth 25 is also provided on the upper surface of the fixed cutting tooth 27, and the movable cutting tooth 25 is slidably connected to the surface of the fixed cutting tooth 27; both ends of the movable cutting tooth 25 are fixed with L-shaped rods 251, and the L-shaped rod 251 is slidably connected in the movable groove 29; the side wall of the L-shaped rod 251 is fixed with a limiting rod 252, and the limiting rod 252 is connected to the side wall of the movable groove 29; a second spring 253 is sleeved on the limiting rod 252, and the second spring 253 is used to connect the side wall of the movable groove 29 and the L-shaped rod 251.

[0061] like Figures 1 to 2 As shown, a connecting rod 243 is fixed to the bottom of the movable plate 24, and a triangular block 244 is fixed to the end of the connecting rod 243. The triangular block 244 is slidably connected in the movable groove 29 as the movable plate 24 moves; when the triangular block 244 moves with the movable plate 24, it contacts and squeezes the inclined surface of the end of the L-shaped rod 251, driving the L-shaped rod 251 to slide horizontally in the movable groove 29.

[0062] After the teeth on the first curved arm 200 and the second curved arm 210 are engaged with the first gear 22, and the movable plate 24 is moved toward each other through the gear transmission group, the rope and the transmission rod 261, the movable plate 24 will undergo stretching on both sides and two resets within the above-mentioned cycle. Therefore, in one embodiment, movable cutting teeth 25 are also provided at the bottom edges of the first grab shell 20 and the second grab shell 21. The movable cutting teeth 25 slide with the fixed cutting teeth 27. Since the silt at the bottom of the ditch is usually accompanied by aquatic plants, and the roots of the aquatic plants are dense, it is easy to pull the grab module, resulting in the grab module requiring a large force to break away from the entangled aquatic plants. In one embodiment, since the movable plate 24 will be stretched and reset at a high frequency within the above-mentioned cycle, the bottom of the movable plate 24 is connected to the connecting rod 243 and the triangular block 244. When the movable plate 24 moves toward each other, it can be squeezed by the triangular block 244. The inclined surface at the end of the L-shaped rod enables the L-shaped rod to move back and forth laterally on the surface of the fixed cutting teeth 27 under the action of the limit rod 252 and the second spring 253. When the water grass is caught in the first grab shell 20 and the second grab shell 21, it can be understood that the water grass will extend into the bucket cavity through the gap between the fixed cutting teeth 27 at the bottom of the first grab shell 20 and the second grab shell 21. If the roots of the water grass are rooted in the riverbed and are very tough, it is necessary to rely on the output of the excavator to pull out the water grass. However, in this embodiment, when the movable plate 24 is displaced, it can drive the movable cutting teeth 25 to move back and forth laterally on the fixed cutting teeth 27 at a fast and high frequency, thereby being able to cut the water grass passing through the fixed cutting teeth 27, thereby preventing the water grass from entangled in the grab module and requiring the output of the excavator to tear it off; it is worth noting that in the above description, the triangular block 244 is only arranged on one side of the movable plate 24 (such as Figure 4As shown), L-shaped rods are provided at both ends of the movable cutting tooth 25, and the L-shaped rods are connected to the side walls of the movable groove 29 through the limit rods 252. When the triangular block 244 squeezes the L-shaped rod, the L-shaped rod moves outward. When the triangular block 244 is reset with the movable plate 24, the L-shaped rod moves inward.

[0063] like Figures 1 to 2 As shown, the fixing module includes a fixing base 10, a hydraulic cylinder 11 and a reinforcing rib 12; the top of the hydraulic cylinder 11 is hinged to the outside of the fixing base 10, and the two hydraulic cylinders 11 are symmetrically arranged; the reinforcing rib 12 is fixed to the outside of the fixing base 10 and is staggered with the hydraulic cylinder 11; the connecting shaft 13 is rotatably connected to the reinforcing rib 12.

[0064] Working principle: When excavating the silt at the bottom of the ditch, use an excavator or crane equipment to sink the device to the place where the silt at the bottom of the ditch needs to be excavated, and then use the fixed module to drive the first grab shell 20 and the second grab shell 21 to separate. At this time, the opened first grab shell 20 and the second grab shell 21 can penetrate into the bottom of the silt, and then, use the fixed module to drive the first grab shell 20 and the second grab shell 21 to merge. At this time, the first grab shell 20 and the second grab shell 21 are filled with the captured silt at the bottom of the ditch, accompanied by a large amount of water. As the first grab shell 20 and the second grab shell 21 are merged (using the example of the embodiment) and the fixed module controls the merging of the first grab shell 20 and the second grab shell 21, the movable plates 24 are driven by the driving unit to move toward each other. At this time, the silt and water mixture between the two movable plates 24 is compressed, so that the water mixed in the silt is fully discharged from the silt. At this time, the silt and water inside the first grab shell 20 and the second grab shell 21 (hereinafter referred to as the bucket cavity) are separated as much as possible. Subsequently, the excavator drives the device upward. After moving upward and leaving the river channel, the water separated from the silt in the bucket cavity is discharged through the gaps in the bucket cavity.

[0065] It is worth noting that in the above description, two movable plates 24 are provided, which are respectively located inside the first grab shell 20 and the second grab shell 21, and when the first grab shell 20 and the second grab shell 21 are merged, the two movable plates 24 will move toward each other, thereby compressing the silt in the bucket cavity, so that the water in the silt is discharged as much as possible. At this point, after the device is brought out of the water, the water will be discharged first. Since the silt is compressed, the water discharged through the gaps in the bucket cavity or the drain holes will not bring out excessive silt, and thus will not cause pollution to the environment; during the merging stage, the first grab shell 20 and the second grab shell 21 can use a driving unit to drive the movable plates 24 to move toward each other. Specifically, in one embodiment of the present invention, when the first grab shell 20 and the second grab shell 21 are merged, the first curved arm 200 and the second curved arm 210 will slide on the outer walls of the second grab shell 21 and the first grab shell 20, and merge with The first gears 22 respectively provided on the first grab shell 20 and the second grab shell 21 are engaged. When the first gear 22 rotates, it can drive the gear transmission group to start, and the gear transmission group is used to drive the two movable plates 24 to move toward each other. That is to say, in this embodiment, the movable plates 24 are indirectly driven to move toward each other only by merging the first grab shell 20 and the second grab shell 21. The purpose is to not add additional driving equipment. It can be understood that if the movable plates 24 are driven by motors or hydraulic equipment, first, underwater operations have high requirements for driving equipment, resulting in increased costs. Second, long-term underwater operations are prone to damage to the driving equipment, which in turn affects operations. Based on the above, in this embodiment, the first curved arm 200 and the second curved arm 210 cooperate with the first gear 22 to drive the gear transmission group to start, thereby controlling the two movable plates 24 to move toward each other, which can save costs and has a low failure rate without affecting operations.

[0066] The gear transmission group includes a synchronous gear 221 and a second gear 26. Specifically, when the first gear 22 is engaged and rotated, it can drive the coaxial synchronous gear 221 to rotate. The synchronous gear 221 is engaged with the second gear 26. Therefore, when the synchronous gear 221 rotates, the second gear 26 can also rotate synchronously. The second gear 26 is rotatably connected to the side walls of the first grab shell 20 and the second grab shell 21 through the transmission rod 261. Therefore, when the second gear 26 rotates, it can also wind the rope, thereby pulling the movable plate 24 to move toward each other; it is worth noting that in the initial state of the movable plate 24, due to the elastic force of the first spring 242, there is a gap between the side walls of the first grab shell 20 and the second grab shell 21. When the rope is wound, the movable plate 24 will move toward each other. At this time, the first spring 242 is stretched and elastic potential energy is generated at the same time. It should be noted here that since teeth are provided on the first curved arm 200 and the second curved arm 210, and the teeth are meshed with the first gear 22 The first gear 22 and the synchronous gear 221 are no longer limited by the teeth on the first and second curved arms 200 and 210. Furthermore, a torsion spring is sleeved on the central axis of the first gear 22 and the synchronous gear 221. After the first gear 22 is driven by the teeth to rotate, the torsion spring is also compressed. When the first gear 22 is disengaged from the teeth, the torsion spring is reset, and the first gear 22 and the synchronous gear 221 are quickly reset, and at the same time, the second gear 26 is reversed. The second gear 26 is reversed, and the elastic potential energy of the first spring 242 is combined to quickly reset the movable plate 24 to its initial state, thereby generating a vibration effect, which can vibrate and remove the sludge adhered to the movable plate 24 and the bucket cavity, thereby avoiding sludge adhesion and incomplete discharge.

[0067] In addition, since the first grab shell 20 and the second grab shell 21 are in a merged state at this time, although the first gear 22, the synchronous gear 221 and the second gear 26 are reset, and the movable plate 24 is also in a reset state, when the first grab shell 20 and the second grab shell 21 are separated from the water surface and transferred to the silt stacking area, the first grab shell 20 and the second grab shell 21 still need to be separated and the silt is discharged. At this time, the first curved arm 200 and the second curved arm 210 are displaced in the opposite direction, driving the first gear 22 to flip. At this time, the synchronous gear 221 is reversed, and the second gear 26 is also reversed. Note: the reversal of the second gear 26 here is different from the reversal after the first gear 22 is separated from the teeth. It can be understood that: assuming that the first grab shell 20 and the second grab shell 21 are merged (with Figure 2As shown in the figure, the first curved arm 200 drives the first gear 22 meshed with it to rotate 360° clockwise (depending on the implementation, it can be rotated to a smaller or larger angle), then the synchronous gear 221 rotates 360° clockwise, and the second gear 26 meshed with the synchronous gear 221 rotates 360° counterclockwise and winds the rope; when the first gear 22 is disengaged from the teeth, the first gear 22 and the synchronous gear 221 rotate 360° counterclockwise, and the second gear 26 rotates 360° clockwise; when the first grab shell 20 and the second grab shell 21 are separated, the first curved arm 200 is meshed with the first gear 22, at this time the first gear 22 rotates 360° counterclockwise, and the synchronous gear 221 rotates 360° counterclockwise, and the second gear 26 rotates 360° clockwise. When the teeth on the first curved arm 200 are disengaged from the first gear 22, The first gear 22 and the synchronous gear 221 rotate 360° clockwise, and the second gear 26 rotates 360° counterclockwise; that is, taking the merging and opening of the first grab shell 20 and the second grab shell 21 as one cycle, the second gear 26 needs to rotate 360° counterclockwise first, then rotate 720° clockwise, and then rotate 360° counterclockwise. During this cycle, the movable plate 24 will be stretched twice and reset twice after stretching. Based on the above, through the teeth on the first curved arm 200 and the second curved arm 210 cooperating with the first gear 22, the gear transmission group and the transmission rod 261 and the rope, the movable plate 24 can be moved toward each other, and at the same time, the high-frequency behavior of the movable plate 24 quickly resetting after stretching can be achieved, so that when the grab module is transferred, water can be drained out while reducing the outflow of silt, and at the same time, the silt can be discharged as cleanly as possible;

[0068] After the teeth on the first curved arm 200 and the second curved arm 210 are engaged with the first gear 22, and the movable plate 24 is moved toward each other through the gear transmission group, the rope and the transmission rod 261, the movable plate 24 will undergo stretching on both sides and two resets within the above-mentioned cycle. Therefore, in one embodiment, movable cutting teeth 25 are also provided at the bottom edges of the first grab shell 20 and the second grab shell 21. The movable cutting teeth 25 slide with the fixed cutting teeth 27. Since the silt at the bottom of the ditch is usually accompanied by aquatic plants, and the roots of the aquatic plants are dense, it is easy to pull the grab module, resulting in the grab module requiring a large force to break away from the entangled aquatic plants. In one embodiment, since the movable plate 24 will be stretched and reset at a high frequency within the above-mentioned cycle, the bottom of the movable plate 24 is connected to the connecting rod 243 and the triangular block 244. When the movable plate 24 moves toward each other, it can be squeezed by the triangular block 244. The inclined surface at the end of the L-shaped rod enables the L-shaped rod to move back and forth laterally on the surface of the fixed cutting teeth 27 under the action of the limit rod 252 and the second spring 253. When the water grass is caught in the first grab shell 20 and the second grab shell 21, it can be understood that the water grass will extend into the bucket cavity through the gap between the fixed cutting teeth 27 at the bottom of the first grab shell 20 and the second grab shell 21. If the roots of the water grass are rooted in the riverbed and are very tough, it is necessary to rely on the output of the excavator to pull out the water grass. However, in this embodiment, when the movable plate 24 is displaced, it can drive the movable cutting teeth 25 to move back and forth laterally on the fixed cutting teeth 27 at a fast and high frequency, thereby being able to cut the water grass passing through the fixed cutting teeth 27, thereby preventing the water grass from entangled in the grab module and requiring the output of the excavator to tear it off; it is worth noting that in the above description, the triangular block 244 is only arranged on one side of the movable plate 24 (such as Figure 4 As shown), L-shaped rods are provided at both ends of the movable cutting tooth 25, and the L-shaped rods are connected to the side walls of the movable groove 29 through the limit rods 252. When the triangular block 244 squeezes the L-shaped rod, the L-shaped rod moves outward. When the triangular block 244 is reset with the movable plate 24, the L-shaped rod moves inward.

[0069] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A ditch opening device for water conservancy project construction, characterized by: include: A fixed module, and a grab module connected below the fixed module; A connecting shaft (13) is rotatably connected to the lower portion of the fixed module, and the grab module is hinged to the connecting shaft (13); The grab bucket module comprises a first grab bucket shell (20) and a second grab bucket shell (21); the first grab bucket shell (20) and the second grab bucket shell (21) are symmetrically hinged on the connecting shaft (13); The grab module further includes a movable plate (24) and a driving unit; the movable plate (24) is movably connected to the inside of the first grab shell (20) and the second grab shell (21), and is driven by the driving unit; the driving unit is used to drive the movable plates (24) symmetrically arranged in the first grab shell (20) and the second grab shell (21) to move toward each other during the merging stage of the first grab shell (20) and the second grab shell (21), so as to squeeze the sludge in the grab module; The driving unit includes: A first curved arm (200) fixedly connected to the outside of the first grab shell (20), and a second curved arm (210) fixedly connected to the outside of the second grab shell (21); the first curved arm (200) and the second curved arm (210) are arranged concentrically; A first gear (22) is rotatably connected to the outside of the first grab shell (20) and the outside of the second grab shell (21), and the two first gears (22) are symmetrically arranged; teeth are provided on the side walls of the first curved arm (200) and the second curved arm (210) facing the first gear (22), and the first curved arm (200) and the second curved arm (210) are respectively engaged with the first gear (22); A gear transmission group is arranged inside the first grab shell (20) and the second grab shell (21); when the first gear (22) is driven by the first curved arm (200) and the second curved arm (210), the gear transmission group is activated, driving the two movable plates (24) to move toward each other; The gear transmission group includes: a synchronous gear (221) coaxially fixed to the first gear (22), and the synchronous gear (221) is arranged on the inner sides of the first grab shell (20) and the second grab shell (21); A second gear (26) is rotatably connected to the inner sides of the first grab shell (20) and the second grab shell (21), and the second gear (26) is meshed with a synchronous gear (221); a transmission rod (261) is fixedly connected to the middle of the second gear (26), and the transmission rod (261) extends to the inside of the first grab shell (20) and the second grab shell (21); A rope is fixedly connected to a side wall of the movable plate (24) relative to the transmission rod (261), and one end of the rope is fixedly connected to the movable plate (24), and the other end passes through the transmission rod (261) and is fixedly connected to the transmission rod (261).

2. A ditch opening device for water conservancy project construction according to claim 1, characterized in that: One side of the movable plate (24) is fixed with a rope, and the other side is fixed with a plurality of slide bars (241); the slide bars (241) pass through the side walls of the first grab shell (20) and the second grab shell (21); a first spring (242) is sleeved on the slide bar (241), and the first spring (242) is used to connect the movable plate (24) with the first grab shell (20) and the second grab shell (21).

3. A ditch opening device for water conservancy project construction according to claim 2, characterized in that: A gear cover (23) is further provided inside the grab bucket module. The gear cover (23) is fixed to the inner side of the first grab bucket shell (20) and the second grab bucket shell (21) via screws and is used to enclose the synchronous gear (221) and the second gear (26); the transmission rod (261) passes through the gear cover (23); the movable plate (24) is in sliding engagement with the gear cover (23); The inner sides of the first grab shell (20) and the second grab shell (21) are fixedly connected with limiting blocks (28) for clamping the gear cover (23).

4. A ditch opening device for water conservancy project construction according to claim 3, characterized in that: The bottoms of the first grab shell (20) and the second grab shell (21) are further provided with fixed cutting teeth (27), and the bottoms are further provided with movable grooves (29) perpendicular to the fixed cutting teeth (27); a first limiting member (201) is fixedly connected to the outer side of the first grab shell (20), and the second bent arm (210) is slidably engaged with the first limiting member (201); a second limiting member (211) is fixedly connected to the outer side of the second grab shell (21), and the first bent arm (200) is slidably engaged with the second limiting member (211).

5. A ditch opening device for water conservancy project construction according to claim 4, characterized in that: A movable cutting tooth (25) is further provided on the upper surface of the fixed cutting tooth (27), and the movable cutting tooth (25) is slidably connected to the surface of the fixed cutting tooth (27); both ends of the movable cutting tooth (25) are fixedly connected to an L-shaped rod (251), and the L-shaped rod (251) is slidably connected in the movable groove (29); the side wall of the L-shaped rod (251) is fixedly connected to a limiting rod (252), and the limiting rod (252) is connected to the side wall of the movable groove (29); a second spring (253) is sleeved on the limiting rod (252), and the second spring (253) is used to connect the side wall of the movable groove (29) and the L-shaped rod (251).

6. A ditch opening device for water conservancy project construction according to claim 5, characterized in that: The bottom of the movable plate (24) is fixedly connected to a connecting rod (243), and the end of the connecting rod (243) is fixedly connected to a triangular block (244). The triangular block (244) moves with the movable plate (24) and is slidably connected in the movable groove (29); when the triangular block (244) moves with the movable plate (24), it contacts and squeezes the inclined surface of the end of the L-shaped rod (251), driving the L-shaped rod (251) to slide horizontally in the movable groove (29).

7. A ditch opening device for water conservancy project construction according to claim 6, characterized in that: The fixing module comprises a fixing seat (10), a hydraulic cylinder (11) and a reinforcing rib (12); the top of the hydraulic cylinder (11) is hinged to the outside of the fixing seat (10), and the two hydraulic cylinders (11) are symmetrically arranged; the reinforcing rib (12) is fixed to the outside of the fixing seat (10) and is arranged alternately with the hydraulic cylinder (11); the connecting shaft (13) is rotatably connected to the reinforcing rib (12).

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