Riverbed rock breaking equipment

Abstract

The invention relates to the technical field of rock breaking equipment, and discloses riverbed rock breaking equipment which comprises a ship body and a rock breaking machine. The rock breaking machine comprises a cutter head, a mounting sleeve and a supporting sleeve; the cutterhead is rotatably mounted at the bottom of the mounting sleeve, the supporting sleeve slidably sleeves the mounting sleeve, a driving mechanism for driving the cutterhead to rotate is arranged in the mounting sleeve, a hydraulic cylinder for driving the mounting sleeve to move up and down is arranged in the supporting sleeve, a balancing weight is further arranged on the supporting sleeve, and a plurality of supporting assemblies are further arranged on the side wall of the supporting sleeve; the supporting assembly comprises an elastic telescopic rod, a limiting drill rod and a first motor for driving the limiting drill rod to rotate. A supporting plate for mounting the supporting assembly is formed on the outer side wall of the supporting sleeve, and a horizontal sensor is arranged on the supporting plate; the elastic telescopic rod is fixedly installed at the bottom of the supporting plate, and the limiting drill rod is rotationally installed at the bottom of the supporting plate. The device can adapt to riverbeds in water areas with different depths, drill rods do not need to be spliced, and operation is easier, more convenient and faster.

Description

Technical Field

[0001] The invention belongs to the technical field of rock breaking equipment, and in particular relates to a riverbed rock breaking equipment. Background Art

[0002] With the rapid development of shipping demand, the current width and depth of waterways cannot meet the needs of shipping. Waterway widening and deepening construction has become an important area in current engineering construction. At present, waterway widening and deepening construction generally adopts suction dredger structure for construction when encountering silt, soft soil and silt formations; when encountering soft rock, hard rock and extremely hard rock, rock breaking construction is generally required.

[0003] When breaking rocks on the riverbed, traditional rock breaking equipment mainly relies on mechanical roller cutters for rock breaking operations. The cutter disc is connected by a drill rod and lowered to the riverbed for rock breaking. If it is in deep waters, a large number of drill rods are required for splicing, and the operation is performed on the hull. When the wind and waves are strong, the hull shakes violently, and the operation process is complicated, time-consuming and labor-intensive.

[0004] In view of this, the inventor conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Summary of the invention

[0005] The purpose of the present invention is to provide a riverbed rock breaking device which can adapt to riverbeds in waters of different depths and does not require splicing of drill rods, making the operation more simple and quick.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A riverbed rock breaking device comprises a hull and a rock breaker, wherein the hull is provided with a lifting device for lifting the rock breaker; the rock breaker comprises a cutter disc, a mounting sleeve and a support sleeve; the cutter disc is rotatably mounted at the bottom of the mounting sleeve, the support sleeve is slidably sleeved on the mounting sleeve, a driving mechanism for driving the cutter disc to rotate is arranged in the mounting sleeve, a hydraulic cylinder for driving the mounting sleeve to move up and down is arranged in the support sleeve, a counterweight block is also arranged on the support sleeve, and a plurality of support assemblies are also arranged on the side wall of the support sleeve; the support assembly comprises an elastic telescopic rod, a limit drill rod and a first motor for driving the limit drill rod to rotate; a support plate for mounting the support assembly is formed on the outer side wall of the support sleeve, and a horizontal sensor is arranged on the support plate; the elastic telescopic rod is fixedly mounted on the bottom of the support plate, and the limit drill rod is rotatably mounted on the bottom of the support plate; the lifting device comprises a fixing frame and an electric hoist arranged on the fixing frame, and a steel wire rope of the electric hoist is connected to the top of the support sleeve.

[0008] Furthermore, the bottom of the elastic telescopic rod is provided with a plurality of limiting legs, and the plurality of limiting legs are arranged in a circular array; the length of the limiting drill rod is less than the length of the supporting sleeve. The limiting legs can provide a limiting effect when the drill rod rotates, thereby preventing the entire supporting sleeve from rotating.

[0009] Furthermore, the support assembly also includes a monitoring assembly for monitoring the drilling depth of the limited drill rod, the monitoring assembly includes a tooth row and a first gear meshing with the tooth row, the tooth row is slidably mounted on the support plate, the first gear is rotatably mounted on the top of the support plate, the tooth row is arranged parallel to the limited drill rod; the bottom of the tooth row is provided with a top plate flush with the bottom of the limited drill rod; the support plate is also provided with a counter for the number of rotations of the first gear. The monitoring assembly can be used to monitor the depth of the drill rod's downward rotation.

[0010] Furthermore, a through slot is formed on the support plate for the tooth row to pass through, guide slots are formed on both sides of the through slot, guide blocks are formed on both sides of the tooth row to cooperate with the guide slot, and a limiting plate is formed on one side of the first gear of the tooth row. The limiting plate can prevent the tooth row from falling out of the through slot.

[0011] Furthermore, a bearing plate for placing the counterweight is provided on the outer wall of the support sleeve, and a plurality of limiting columns are provided on the bearing plate; there are a plurality of counterweights, and the counterweights are annularly sleeved on the support sleeve, and a plurality of limiting holes cooperating with the limiting columns are formed on the counterweights; the bearing plate is located above the support plate. The limiting columns can better fix the counterweight.

[0012] Furthermore, the cutter disc includes a cutter disc frame and a plurality of roller cutters rotatably mounted on the cutter disc frame, the cutter disc frame includes a rock breaking part and a chip removal part, the rock breaking part is truncated, and the area of ​​the upper bottom surface of the rock breaking part is larger than the area of ​​the lower bottom surface, the roller cutters are rotatably mounted on the side of the rock breaking part; the chip removal part is cylindrical, and a plurality of chip removal grooves are formed on the side of the chip removal part, and a plurality of abrasive particles are also arranged on the side of the rock breaking part. The roller cutters are used to break the rock layer, and the abrasive particles grind the stone into slag, and finally the broken pits are discharged through the chip removal grooves.

[0013] Furthermore, a positioning drill bit is provided at the bottom of the rock breaking part, and the positioning drill bit is detachably connected to the rock breaking part. The positioning drill bit can be used to locate the broken part in advance, and the drill bit can be used to preliminarily break the rock layer.

[0014] Furthermore, the cutter head frame is also provided with a rotating block connected to the mounting sleeve, the rotating block is located at the top of the chip removal part, and a plurality of balls are provided between the rotating block and the mounting sleeve; the driving mechanism includes a second gear and a second motor driving the second gear to rotate; the rotating block is provided with an inner gear ring meshing with the second gear, the second gear is a bevel gear, a first mounting plate is provided in the mounting sleeve, the second gear is rotatably mounted on the first mounting plate, and the second motor is fixedly mounted on the first mounting plate. The balls can make the rotation between the cutter head frame and the mounting sleeve smoother.

[0015] Furthermore, a plurality of limiting slide grooves are formed on the inner wall of the support sleeve, and a limiting slider matched with the limiting slide grooves is formed on the outer wall of the mounting sleeve; a second mounting plate is provided inside the support sleeve, and the hydraulic cylinder is fixedly mounted on the second mounting plate. The matching of the limiting slide grooves and the limiting slider can make the mounting sleeve more stable when sliding up and down.

[0016] After adopting the above structure, the present invention relates to a riverbed rock breaking equipment. Compared with the prior art, this case arranges a lifting device on the hull, and uses the lifting device to lower the rock breaker to the riverbed to break the hard rock of the riverbed. In this way, the probing depth of the rock breaker can be freely adjusted to adapt to waters of different depths. There is no need to splice drill rods during the crushing process, which makes the overall operation more convenient. In addition, since the rock breaker and the hull are flexibly connected, the rock layer at the target location can be broken even when the wind and waves are strong and the hull is shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the rock breaker in the present invention;

[0020] Figure 3 for Figure 2 A cross-sectional schematic diagram of

[0021] Figure 4 It is a schematic diagram of the structure of the support sleeve in the present invention;

[0022] Figure 5 for Figure 4 Schematic diagram of the decomposition structure;

[0023] Figure 6 for Figure 5 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 7 It is a schematic diagram of the structure of the tooth row in the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the cutter disc and the driving mechanism in the present invention;

[0026] Fig. 9 It is a structural schematic diagram of the installation sleeve in the present invention.

[0027] The symbols of the main components are explained as follows: hull 1, cutter head 2, cutter head frame 21, rock breaking part 211, abrasive particles 2111, chip removal part 212, chip removal groove 2121, hob 22, positioning drill bit 23, rotating block 24, inner gear ring 241, ball 25, mounting sleeve 3, first mounting plate 31, limiting slider 32, supporting sleeve 4, supporting plate 41, through groove 411, bearing plate 42, limiting column 421, limiting slide groove 43, second mounting plate 44, driving mechanism 5, second gear 51, second motor 52, hydraulic cylinder 6, counterweight block 7, limiting hole 71, supporting assembly 8, elastic telescopic rod 81, limiting support foot 811, limiting drill rod 82, first motor 84, monitoring assembly 83, gear row 831, top plate 8311, guide block 8312, limiting plate 8313, first gear 832, fixing frame 91, electric hoist 92. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions of the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.

[0029] like Figures 1 to 9As shown, a riverbed rock breaking device according to the present invention comprises a hull 1 and a rock breaker, wherein the hull 1 is provided with a lifting device for lifting the rock breaker; the rock breaker comprises a cutter disc 2, a mounting sleeve 3 and a support sleeve 4; the cutter disc 2 is rotatably mounted at the bottom of the mounting sleeve 3, the support sleeve 4 is slidably sleeved on the mounting sleeve 3, a driving mechanism 5 for driving the cutter disc 2 to rotate is provided in the mounting sleeve 3, a hydraulic cylinder 6 for driving the mounting sleeve 3 to move up and down is provided in the support sleeve 4, a counterweight block 7 is further provided on the support sleeve 4, and a plurality of support groups are further provided on the side wall of the support sleeve 4 The support assembly 8 includes an elastic telescopic rod 81, a limit drill rod 82, and a first motor 84 that drives the limit drill rod 82 to rotate. A support plate 41 for mounting the support assembly 8 is formed on the outer wall of the support sleeve 4, and a horizontal sensor is provided on the support plate 41. The elastic telescopic rod 81 is fixedly mounted on the bottom of the support plate 41, and the limit drill rod 82 is rotatably mounted on the bottom of the support plate 41. The lifting equipment includes a fixed frame 91 and an electric hoist 92 arranged on the fixed frame 91, and the steel wire rope of the electric hoist 92 is connected to the top of the support sleeve 4. In this embodiment, there are three groups of support assemblies 8, and the three groups of support assemblies 8 are arranged in a circular array along the axis of the support sleeve 4. A plurality of limit legs 811 are provided at the bottom of the elastic telescopic rod 81, and the plurality of limit legs 811 are arranged in a circular array. The length of the limit drill rod 82 is less than the length of the elastic telescopic rod 81. When in use, the rock breaker is lowered to the riverbed by the electric hoist 92. Before the rock breaker is fixed on the riverbed, the force of the rock breaker is still on the wire rope, so that the rock breaker remains in a vertical state. When the rock breaker is fixed, the electric hoist 92 drives the limit drill rod 82 to drill. At this time, the wire rope is slowly lowered and the limit drill rod 82 rotates downward under the action of the counterweight 7 (in this process, the horizontal sensor can be used to determine whether the rock breaker remains in a horizontal state, and the wire rope is used for adjustment). However, when the limit drill rod 82 rotates, the riverbed may be uneven. In this state, only one set of limit drill rods 82 is in contact with the riverbed, which may cause the entire rock breaker to rotate. Therefore, an elastic telescopic rod 81 is provided. Since the length of the elastic telescopic rod 81 is longer than that of the limit drill rod 82, multiple sets of elastic telescopic rods 81 can preferentially touch the bottom for limiting, and multiple limit legs 811 can further prevent the entire rock breaker from rotating. When multiple limit drill rods 82 are drilled into the rock formation, the driving mechanism 5 is started to rotate the entire cutter head 2, and then the mounting sleeve 3 is driven downward under the action of the hydraulic cylinder 6, so that the cutter head 2 breaks the rock formation. In addition, under the action of the counterweight 7, the entire support sleeve 4 can be prevented from being lifted up in the reverse direction.

[0030] In order to ensure that the rock breaker remains in a horizontal state, the drilling depth of each support assembly 8 is different. However, in order to ensure that the support sleeve 4 cannot rotate when the cutter head 2 rotates, the limit drill rod 82 must maintain a certain drilling depth. Therefore, the support assembly 8 also includes a monitoring assembly 83 for monitoring the drilling depth of the limit drill rod 82. The monitoring assembly 83 includes a tooth row 831 and a first gear 832 meshing with the tooth row 831. The tooth row 831 is slidably mounted on the support plate 41. The first gear 83 2 is rotatably mounted on the top of the support plate 41, and the tooth row 831 is arranged parallel to the limit drill rod 82; the bottom of the tooth row 831 is provided with a top plate 8311 flush with the bottom of the limit drill rod 82, and in order to make the top plate 8311 contact with the riverbed surface normally, so that the tooth row 831 can rise normally when the limit drill rod 82 is drilling, a through hole is formed on the top plate 8311 for the limit drill rod 82 to pass through; the support plate 41 is also provided with a counter for the number of rotations of the first gear 832. The working principle of the monitoring component 83 is specifically that when the limit drill rod 82 is drilling, the tooth row 831 will rise, and drive the first gear 832 to rotate during the rising process, and the number of rotations of the first gear 832 can be monitored by the counter, and the depth of the limit drill rod 82 drilling can be calculated.

[0031] In this embodiment, a through slot 411 is formed on the support plate 41 for the tooth row 831 to pass through, guide slots are formed on both sides of the through slot 411, guide blocks 8312 that cooperate with the guide slots are formed on both sides of the tooth row 831, and a limiting plate 8313 is formed on one side of the first gear 832 of the tooth row 831. The guide slot and the guide block 8312 can make the tooth row 831 more stable when moving, and the limiting plate 8313 can prevent the tooth row 831 from falling off from the through slot 411 during the process of lifting the rock breaker.

[0032] In this embodiment, in order to better install and place the counterweight 7, a bearing plate 42 for placing the counterweight 7 is provided on the outer wall of the support sleeve 4, and a plurality of limiting columns 421 are provided on the bearing plate 42; there are multiple counterweights 7, and the counterweights 7 are annularly sleeved on the support sleeve 4, and a plurality of limiting holes 71 cooperating with the limiting columns 421 are formed on the counterweights 7; the bearing plate 42 is located above the support plate 41. When the counterweights 7 are provided in multiple pieces, different numbers of counterweights 7 can be selected and installed according to the different hardness of the rock formations. The harder the specific rock formation, the more counterweights 7 need to be installed.

[0033] In the present embodiment, the cutter disc 2 comprises a cutter disc 2 frame and a plurality of roller cutters 22 rotatably mounted on the cutter disc 2 frame. The roller cutters 22 are multi-edged roller cutters 22, which can increase the crushing area, improve efficiency, increase the strength of the roller cutters 22, and enhance the service life of the roller cutters 22; the cutter disc 2 frame comprises a rock breaking portion 211 and a chip removal portion 212, the rock breaking portion 211 is truncated cone-shaped, and the area of ​​the upper bottom surface of the rock breaking portion 211 is larger than the area of ​​the lower bottom surface, and the roller cutters 22 are rotatably mounted on the side of the rock breaking portion 211; the chip removal portion 212 is cylindrical, and a plurality of chip removal grooves 2121 are formed on the side of the chip removal portion 212, the chip removal grooves 2121 are spiral, and the plurality of chip removal grooves 2121 are arranged in a circular array along the axis of the chip removal portion 212, and a plurality of abrasive particles 2111 are also provided on the side of the rock breaking portion 211. The rock formation is crushed by the roller cutter 22 , and then the abrasive particles 2111 grind the rocks into slag, and finally the crushed pits are discharged through the chip discharge groove 2121 .

[0034] Specifically, in order to improve the crushing efficiency, a positioning drill bit 23 is further provided at the bottom of the rock crushing part 211, and the positioning drill bit 23 is detachably connected to the rock crushing part 211 through a plurality of bolts. The positioning drill bit 23 can be used to locate the crushing part in advance, and since the drill bit is conical, the rock layer can be drilled more easily with the drill bit, and the rock layer is preliminarily crushed in advance; however, the drill bit is easily damaged, so the positioning drill bit 23 is detachably connected to the rock crushing part 211 for easy replacement.

[0035] In this embodiment, the cutter disc 2 is also provided with a rotating block 24 connected to the mounting sleeve 3, the rotating block 24 is located at the top of the chip removal part 212, and a plurality of balls 25 are provided between the rotating block 24 and the mounting sleeve 3; there are multiple groups of driving mechanisms 5, and the multiple groups of driving mechanisms 5 are arranged in a ring array, and the specific driving mechanism 5 includes a second gear 51 and a second motor 52 that drives the second gear 51 to rotate; the rotating block 24 is provided with an inner gear ring 241 that meshes with the second gear 51, and the second gear 51 is a bevel gear. The mounting sleeve 3 is provided with a first mounting plate 31, and the second gear 51 is rotatably mounted on the first mounting plate 31, and the second motor 52 is fixedly mounted on the first mounting plate 31. The balls 25 can make the rotation between the cutter disc 2 and the mounting sleeve 3 smoother.

[0036] In this embodiment, in order to make the sliding between the installation sleeve 3 and the support sleeve 4 more stable and smooth, a plurality of limiting sliding grooves 43 are formed on the inner wall of the support sleeve 4, and a limiting sliding block 32 cooperating with the limiting sliding grooves 43 is formed on the outer wall of the installation sleeve 3; a second mounting plate 44 is provided inside the support sleeve 4, and the hydraulic cylinder 6 is fixedly mounted on the second mounting plate 44. Moreover, the cooperation between the limiting sliding grooves 43 and the limiting sliding block 32 can also prevent the installation sleeve 3 and the support sleeve 4 from rotating relative to each other.

[0037] The method of using the present invention is as follows: first, the rock breaker is lowered to the riverbed by the electric hoist 92. Before the rock breaker is fixed on the riverbed, the force of the rock breaker is still on the wire rope, so that the rock breaker remains in a vertical state. When the rock breaker is fixed, the electric hoist 92 drives the limit drill rod 82 to drill. At this time, the wire rope is slowly lowered and the limit drill rod 82 rotates downward under the action of the counterweight 7. However, when the limit drill rod 82 rotates, since the riverbed may be in an uneven state, only one set of limit drill rods 82 and Contact with the riverbed may cause the entire rock breaker to rotate, so an elastic telescopic rod 81 is provided. Since the length of the elastic telescopic rod 81 is longer than the limiting drill rod 82, multiple groups of elastic telescopic rods 81 can preferentially touch the bottom for limiting, and through multiple limiting legs 811, the entire rock breaker can be further prevented from rotating. When multiple limiting drill rods 82 are drilled into the rock formation, the driving mechanism 5 is started to rotate the entire cutter head 2, and then the mounting sleeve 3 is driven downward under the action of the hydraulic cylinder 6, so that the cutter head 2 breaks the rock formation.

[0038] The above is a detailed introduction to a riverbed rock breaking device provided by the present invention. The description of the specific embodiment is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A riverbed rock breaking device, comprising a hull (1) and a rock breaker, characterized in that: The hull (1) is provided with a lifting device for lifting the rock breaker; the rock breaker comprises a cutter disc (2), a mounting sleeve (3) and a support sleeve (4); the cutter disc (2) is rotatably mounted on the bottom of the mounting sleeve (3); the support sleeve (4) is slidably sleeved on the mounting sleeve (3); a driving mechanism (5) for driving the cutter disc (2) to rotate is provided in the mounting sleeve (3); a hydraulic cylinder (6) for driving the mounting sleeve (3) to move up and down is provided in the support sleeve (4); a counterweight block (7) is also provided on the support sleeve (4); and a plurality of support assemblies (8) are also provided on the side wall of the support sleeve (4); the support assemblies (8) It comprises an elastic telescopic rod (81), a limit drill rod (82) and a first motor (84) for driving the limit drill rod (82) to rotate; a support plate (41) for mounting the support assembly (8) is formed on the outer wall of the support sleeve (4), and a horizontal sensor is provided on the support plate (41); the elastic telescopic rod (81) is fixedly mounted on the bottom of the support plate (41), and the limit drill rod (82) is rotatably mounted on the bottom of the support plate (41); the lifting device comprises a fixed frame (91) and an electric hoist (92) arranged on the fixed frame (91), and a steel wire rope of the electric hoist (92) is connected to the top of the support sleeve (4).

2. A riverbed rock breaking device according to claim 1, characterized in that: A plurality of position-limiting legs (811) are provided at the bottom of the elastic telescopic rod (81), and the plurality of position-limiting legs (811) are arranged in a circular array; the length of the position-limiting drill rod (82) is less than the length of the elastic telescopic rod (81).

3. A riverbed rock breaking device according to claim 2, characterized in that: The support assembly (8) further comprises a monitoring assembly (83) for monitoring the drilling depth of the limit drill rod (82), the monitoring assembly (83) comprising a tooth row (831) and a first gear (832) meshing with the tooth row (831), the tooth row (831) being slidably mounted on the support plate (41), the first gear (832) being rotatably mounted on the top of the support plate (41), the tooth row (831) being arranged parallel to the limit drill rod (82); a top plate (8311) flush with the bottom of the limit drill rod (82) is arranged at the bottom of the tooth row (831); and a counter for counting the number of rotations of the first gear (832) is also arranged on the support plate (41).

4. A riverbed rock breaking device according to claim 3, characterized in that: The support plate (41) is formed with a through slot (411) for the tooth row (831) to pass through, guide slots are formed on both sides of the through slot (411), guide blocks (8312) that cooperate with the guide slots are formed on both sides of the tooth row (831), and a limiting plate (8313) is formed on one side of the tooth row (831) and the first gear (832).

5. A riverbed rock breaking device according to claim 4, characterized in that: A bearing plate (42) for placing the counterweight (7) is provided on the outer wall of the support sleeve (4), and a plurality of limiting columns (421) are provided on the bearing plate (42); there are a plurality of counterweights (7), and the counterweights (7) are annularly sleeved on the support sleeve (4), and a plurality of limiting holes (71) cooperating with the limiting columns (421) are formed on the counterweights (7); the bearing plate (42) is located above the support plate (41).

6. A riverbed rock breaking device according to claim 1, characterized in that: The cutter disc (2) comprises a cutter disc frame (21) and a plurality of roller cutters (22) rotatably mounted on the cutter disc frame (21); the cutter disc frame (21) comprises a rock breaking portion (211) and a chip removal portion (212); the rock breaking portion (211) is truncated cone-shaped, and the area of ​​the upper bottom surface of the rock breaking portion (211) is larger than the area of ​​the lower bottom surface; the roller cutters (22) are rotatably mounted on the side surface of the rock breaking portion (211); the chip removal portion (212) is cylindrical, and a plurality of chip removal grooves (2121) are formed on the side surface of the chip removal portion (212); and a plurality of abrasive particles (2111) are also provided on the side surface of the rock breaking portion (211).

7. A riverbed rock breaking device according to claim 6, characterized in that: A positioning drill bit (23) is also provided at the bottom of the rock breaking part (211), and the positioning drill bit (23) is detachably connected to the rock breaking part (211).

8. A riverbed rock breaking device according to claim 7, characterized in that: The cutter head frame (21) is also provided with a rotating block (24) connected to the mounting sleeve (3), the rotating block (24) is located at the top of the chip removal portion (212), and a plurality of balls (25) are provided between the rotating block (24) and the mounting sleeve (3); the driving mechanism (5) comprises a second gear (51) and a second motor (52) for driving the second gear (51) to rotate; the rotating block (24) is provided with an inner gear ring (241) meshing with the second gear (51), the second gear (51) is a bevel gear, a first mounting plate (31) is provided in the mounting sleeve (3), the second gear (51) is rotatably mounted on the first mounting plate (31), and the second motor (52) is fixedly mounted on the first mounting plate (31).

9. A riverbed rock breaking device according to claim 8, characterized in that: A plurality of limiting sliding grooves (43) are formed on the inner wall of the support sleeve (4), and a limiting sliding block (32) cooperating with the limiting sliding grooves (43) is formed on the outer wall of the mounting sleeve (3); a second mounting plate (44) is provided inside the support sleeve (4), and the hydraulic cylinder (6) is fixedly mounted on the second mounting plate (44).

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