A trenching apparatus for burying a submarine cable

Abstract

The application discloses a trenching equipment for submarine cable burying, which is applied to the field of cable burying and comprises a mounting frame, a fixing block being bolted to the surface of the mounting frame, a water inlet pipe being arranged on the mounting frame and being connected with a water supply pump, a filter box being arranged on the mounting frame and being connected with the water inlet pipe, a cooling shell being arranged on the mounting frame and being connected with the filter box, a heat dissipation fin being arranged on the cooling shell, a hydraulic motor being arranged on the mounting frame and being connected with the heat dissipation fin, a rotating block being arranged on the hydraulic motor, a rotating cylinder being arranged on the rotating block, a connecting rod being arranged on the rotating cylinder, a fixing head being arranged on the connecting rod, and a clamping groove being arranged on the mounting frame and being connected with the fixing head.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cable burying, in particular to a trenching equipment for submarine cable burying. BACKGROUND

[0002] After searching Chinese patents, the patent with publication number CN112922064B is a trenching device for submarine cable burying, which aims to solve the problem of drill bit jamming during trenching of submarine cable laying, affecting normal trenching. The invention includes a mounting frame, a row of rotary cutting high pressure heads mounted on the mounting frame, the rotary cutting high pressure head is in a conical structure, a plurality of tooth pieces are installed on the outer wall of the rotary cutting high pressure head, a plurality of high pressure water pipes are installed in the rotary cutting high pressure head, the opening end of the high pressure water pipe is exposed outside the rotary cutting high pressure head, a hydraulic motor is installed on the mounting frame and corresponding to the rotary cutting high pressure head, a rotating shaft is connected between the rotary cutting high pressure head and the output shaft of the hydraulic motor. This submarine cable burying trenching device is not prone to jamming during submarine trenching operation, ensuring smooth trenching.

[0003] The existing trenching equipment has poor hydraulic motor cooling efficiency. When the hydraulic motor is working, dust generates a large amount of heat. If this heat is not discharged in time, it will affect the stability of the hydraulic motor. The hydraulic motor is in a high temperature state for a long time, which affects its service life. It is also not convenient to assemble and disassemble the connecting pipe. Generally, the connecting pipe is connected through a flange. When assembling and disassembling it, tools are needed to disassemble and assemble it. The disassembly and assembly process is relatively cumbersome, increasing the workload and reducing the work efficiency. In order to solve the above problems, we propose a trenching equipment for submarine cable burying. SUMMARY

[0004] The purpose of the present application is to provide a trenching equipment for submarine cable burying, which has the advantages of high hydraulic motor cooling efficiency and convenient assembly and disassembly of connecting pipe.

[0005] The technical scheme of the present application is realized by the following technical scheme: a trenching equipment for submarine cable burying, comprising a mounting frame, a fixing block is bolted to the surface of the mounting frame, a hydraulic motor is bolted to the surface of the fixing block, a heat dissipation mechanism is arranged on the surface of the hydraulic motor, a filter mechanism is arranged on the surface of the heat dissipation mechanism, a mounting mechanism is arranged on the surface of the filter mechanism, a first maintenance mechanism is arranged on the surface of the filter mechanism, a second maintenance mechanism is arranged on the surface of the heat dissipation mechanism, a trenching mechanism is arranged at the output end of the hydraulic motor, a water supply mechanism is arranged in the trenching mechanism, a connecting mechanism is arranged between the trenching mechanism and the heat dissipation mechanism, an anti-backflow mechanism is arranged in the connecting mechanism, the heat dissipation mechanism comprises a cooling shell, the cooling shell is fixedly sleeved with the surface of the hydraulic motor, heat dissipation fins are bolted to the surface of the hydraulic motor, the heat dissipation fins are made of aluminum alloy material, a protective mesh cover is bolted to the surface of the hydraulic motor, a rotating block is fixedly sleeved with one end of the hydraulic motor rotor, heat dissipation plates are bolted to the surface of the rotating block, and the heat dissipation plates are arranged in an inclined manner.

[0006] The above technical scheme is adopted, the water inlet pipe is connected with the water pump, the water enters the filter box through the water inlet pipe, is filtered and then enters the cooling shell, the water contacts the heat dissipation fins to take away the heat of the heat dissipation fins, the rotating block is driven to rotate the heat dissipation plates by the hydraulic motor during work, the seawater around the hydraulic motor is disturbed, the purpose of cooling the hydraulic motor is achieved, the stability of the hydraulic motor is ensured, and the service life is improved.

[0007] The present application further provides that: the filter mechanism comprises a filter box, the surface of the filter box is communicated with the surface of the cooling shell, filter screens are bolted between the inner walls of the filter box, filter cotton is filled between the filter screens, and guide plates are bolted to the inner walls of the filter box, the guide plates are distributed in a staggered manner, and the guide plates are located between the filter screens.

[0008] The above technical scheme is adopted, the filter mechanism is arranged to filter the water, reduce the corrosion of impurities on the hydraulic motor, and improve the service life.

[0009] The present application further provides that: the mounting mechanism comprises a water inlet pipe, one end of the water inlet pipe is communicated with the surface of the filter box, a fixing ring is fixedly sleeved with the surface of the water inlet pipe, a threaded cylinder is rotatably sleeved with the surface of the fixing ring, and a first sealing gasket is bonded to the surface of the water inlet pipe.

[0010] The above technical scheme is adopted, the mounting mechanism is arranged to facilitate connection with the water pump.

[0011] The first maintenance mechanism comprises a first cover plate, a first rotating shaft is rotatably sleeved on the inner wall of the first cover plate, a rotating disc is fixedly sleeved on the surface of the first rotating shaft, a transmission rod is hingedly connected to the surface of the rotating disc, a clamping rod is hingedly connected to the other end of the transmission rod, a clamping hole is formed in the inner wall of the filter box, and one end of the clamping rod is clamped in the clamping hole, and a limiting plate is fixedly sleeved on the surface of the clamping rod.

[0012] The first maintenance mechanism is arranged, so that the filter screen and the filter cotton can be conveniently replaced and maintained.

[0013] The second maintenance mechanism comprises a second cover plate, the second cover plate is arranged on the inner wall of the cooling shell, a second rotating shaft is rotatably sleeved on the inner wall of the second cover plate, a gear is fixedly sleeved on the surface of the second rotating shaft, the gear is rotatably connected to the inner wall of the second cover plate, a toothed rod is engaged with the surface of the gear, a sliding rod is bolted to the other end of the toothed rod, a clamping head is bolted to the surface of the sliding rod, and the clamping head is clamped on the inner wall of the cooling shell, and a second spring is arranged between the sliding rod and the inner wall of the second cover plate.

[0014] The second maintenance mechanism is arranged, so that the components in the cooling shell can be conveniently maintained and used.

[0015] The slitting mechanism comprises a transmission shaft, one end of the transmission shaft is connected to the output end of the hydraulic motor through a shaft coupling, a supporting seat is mounted on the surface of the transmission shaft, the supporting seat is bolted to the surface of the mounting frame, a slitting head is mounted on the surface of the transmission shaft, slitting tooth plates are welded on the surface of the slitting head, and water injection holes are formed in the surface of the slitting head.

[0016] The slitting mechanism is arranged, so that slitting is facilitated.

[0017] The water supply mechanism comprises a shunt pipe, the shunt pipe is mounted on the surface of the transmission shaft, the surface of the shunt pipe is communicated with a water injection pipe, one end of the water injection pipe is communicated with the water injection hole, and a rotary connector is mounted at one end of the shunt pipe and arranged between the transmission shaft and the slitting head.

[0018] The water supply mechanism is arranged, so that high-pressure water is provided to assist slitting.

[0019] The application further provides that the connecting mechanism comprises a fixing cylinder in communication with the surface of the rotary connector, a connecting pipe is sleeved on the inner wall of the fixing cylinder, and the other end of the connecting pipe is in communication with the surface of the cooling shell, a rotating cylinder is rotatably sleeved on the surface of the fixing cylinder, a connecting rod is hingedly connected to the inner wall of the rotating cylinder, a fixing head is hingedly connected to the other end of the connecting rod, a third spring is arranged between the fixing head and the inner wall of the fixing cylinder, a clamping groove is formed in the surface of the connecting pipe, and one end of the fixing head is clamped in the clamping groove, and a second sealing pad is arranged between the connecting pipe and the inner wall of the fixing cylinder.

[0020] The above technical scheme is adopted, the connecting rod drives the fixing head to be disengaged from the clamping groove by rotating the rotating cylinder, the connecting pipe is taken out, during installation, the connecting pipe is installed in the fixing cylinder, the fixing head is clamped in the clamping groove under the action of the third spring, and the connecting pipe is fixed, so that the purpose of facilitating the installation and removal of the connecting pipe is achieved, the workload is reduced, and the work efficiency is improved.

[0021] The application further provides that the anti-backflow mechanism comprises a fixing frame, the fixing frame is fixedly sleeved on the inner wall of the connecting pipe, the inner wall of the connecting pipe is fixedly sleeved with a limiting ring, a telescopic rod is bolted on the surface of the fixing frame, a flow resistance plate is bolted on one end of the telescopic rod, a fourth spring is arranged between the flow resistance plate and the fixing frame, the fourth spring is sleeved on the surface of the telescopic rod, and a third sealing pad is inlaid in the surface of the flow resistance plate.

[0022] The above technical scheme is adopted, the anti-backflow mechanism is arranged, water backflow is prevented, the cleanliness in the cooling shell is ensured, and the practicability is improved.

[0023] In summary, the application has the following beneficial effects:

[0024] 1. The application connects the water inlet pipe with the water supply pump, water enters the filter box through the water inlet pipe, is filtered, and then enters the cooling shell, the water contacts the heat dissipation fins, and the heat of the heat dissipation fins is taken away, the hydraulic motor drives the rotating block to rotate the heat dissipation plate when working, and the surrounding seawater is disturbed, so that the purpose of cooling the hydraulic motor is achieved, the stability of the hydraulic motor is ensured, and the service life is improved.

[0025] 2. The above technical scheme is adopted, the connecting rod drives the fixing head to be disengaged from the clamping groove by rotating the rotating cylinder, the connecting pipe is taken out, during installation, the connecting pipe is installed in the fixing cylinder, the fixing head is clamped in the clamping groove under the action of the third spring, and the connecting pipe is fixed, so that the purpose of facilitating the installation and removal of the connecting pipe is achieved, the workload is reduced, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural perspective view of the application;

[0027] Figure 2is a partial structure perspective view of the present application;

[0028] Figure 3 is a partial structure sectional view of the present application;

[0029] Figure 4 is a filter box structure sectional view of the present application;

[0030] Figure 5 is a partial structure sectional view of the present application;

[0031] Figure 6 is a filter box structure side sectional view of the present application;

[0032] Figure 7 is a structure enlarged view at A in the present application Figure 3

[0033] is a structure enlarged view at B in the present application Figure 8 Figure 3

[0034] Fig. 1 is a mounting frame; Fig. 2 is a fixing block; Fig. 3 is a hydraulic motor; Fig. 4 is a cooling shell; Fig. 5 is a heat dissipation fin; Fig. 6 is a protective mesh cover; Fig. 7 is a rotating block; Fig. 8 is a heat dissipation plate; Fig. 9 is a filter box; Fig. 10 is a filter screen; Fig. 11 is filter cotton; Fig. 12 is a flow guide plate; Fig. 13 is a water inlet pipe; Fig. 14 is a third sealing gasket; Fig. 15 is a fixing ring; Fig. 16 is a threaded cylinder; Fig. 17 is a first sealing gasket; Fig. 18 is a first cover plate; Fig. 19 is a first rotating shaft; Fig. 20 is a rotating disc; Fig. 21 is a transmission rod; Fig. 22 is a clamping rod; Fig. 23 is a clamping hole; Fig. 24 is a limiting plate; Fig. 25 is a first spring; Fig. 26 is a second cover plate; Fig. 27 is a second rotating shaft; Fig. 28 is a gear; Fig. 29 is a toothed rod; Fig. 30 is a sliding rod; Fig. 31 is a clamping head; Fig. 32 is a second spring; Fig. 33 is a transmission shaft; Fig. 34 is a support seat; Fig. 35 is a slotted head; Fig. 36 is a slotted tooth plate; Fig. 37 is a water spraying hole; Fig. 38 is a shunt pipe; Fig. 39 is a water spraying pipe; Fig. 40 is a rotary connector; Fig. 41 is a fixing cylinder; Fig. 42 is a connecting pipe; Fig. 43 is a rotating cylinder; Fig. 44 is a connecting rod; Fig. 45 is a fixing head; Fig. 46 is a third spring; Fig. 47 is a clamping groove; Fig. 48 is a second sealing gasket; Fig. 49 is a fixing frame; Fig. 50 is a limiting ring; Fig. 51 is an extension rod; Fig. 52 is a flow resistance plate; Fig. 53 is a fourth spring. DETAILED DESCRIPTION

[0035] The present application is further described in detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] Reference Figure 1 , Figure 2 and Figure 3 ​​The utility model provides a kind of trenching equipment for submarine cable burying, including mounting frame 1, the surface of mounting frame 1 is bolted with fixed block 2, the surface of fixed block 2 is bolted with hydraulic motor 3, the surface of hydraulic motor 3 is provided with heat dissipation mechanism, the surface of heat dissipation mechanism is provided with filter mechanism, the surface of filter mechanism is provided with mounting mechanism, the surface of filter mechanism is provided with first maintenance mechanism, the surface of heat dissipation mechanism is provided with second maintenance mechanism, the output end of hydraulic motor 3 is provided with trenching mechanism, the inside of trenching mechanism is provided with water supply mechanism, connection mechanism is arranged between trenching mechanism and heat dissipation mechanism, the inside of connection mechanism is provided with anti-backflow mechanism.

[0038] Heat dissipation mechanism includes cooling shell 4, cooling shell 4 is fixedly sleeved with the surface of hydraulic motor 3, the surface of hydraulic motor 3 is bolted with heat dissipation fin 5, and heat dissipation fin 5 is made of aluminum alloy material, the surface of hydraulic motor 3 is bolted with protective screen 6, one end of hydraulic motor 3 rotor is fixedly sleeved with rotating block 7, the surface of rotating block 7 is bolted with heat dissipation plate 8, and heat dissipation plate 8 is arranged in an inclined manner, by connecting water inlet pipe 13 with water supply pump, water enters filter box 9 after filtering through water inlet pipe 13 and then enters cooling shell 4, water contacts heat dissipation fin 5, removes the heat of heat dissipation fin 5, cooperates with hydraulic motor 3 to drive rotating block 7 to rotate heat dissipation plate 8 when working, and the purpose of cooling hydraulic motor 3 is achieved by the way of disturbing seawater around hydraulic motor 3, guarantees the stability of hydraulic motor 3 and improves service life.

[0039] Reference Figure 4 Filter mechanism includes filter box 9, the surface of filter box 9 is communicated with the surface of cooling shell 4, filter screen 10 is bolted between the inner wall of filter box 9, filter cotton 11 is filled between filter screen 10, guide plate 12 is bolted on the inner wall of filter box 9, and guide plate 12 is staggered, and guide plate 12 is located between filter screen 10, by setting filter mechanism, water is filtered, the corrosion of impurities to hydraulic motor 3 is reduced, and service life is improved.

[0040] Reference Figure 4 Mounting mechanism includes water inlet pipe 13, one end of water inlet pipe 13 is communicated with the surface of filter box 9, fixed ring 15 is fixedly sleeved on the surface of water inlet pipe 13, threaded cylinder 16 is rotatably sleeved on the surface of fixed ring 15, first sealing gasket 17 is bonded on the surface of water inlet pipe 13, by setting mounting mechanism, water pump is conveniently connected.

[0041] Reference Figure 4 And Figure 6The first maintenance mechanism comprises a first cover plate 18, an inner wall of the first cover plate 18 is rotatably sleeved with a first rotating shaft 19, a surface of the first rotating shaft 19 is fixedly sleeved with a rotating disc 20, the rotating disc 20 is hingedly connected with a transmission rod 21, one end of the transmission rod 21 is hingedly connected with a clamping rod 22, an inner wall of the filter box 9 is provided with a clamping hole 23, and the clamping hole 23 is clamped with one end of the clamping rod 22, a surface of the clamping rod 22 is fixedly sleeved with a limiting plate 24, and the limiting plate 24 is provided between the inner wall of the first cover plate 18 and the first spring 25. By arranging the first maintenance mechanism, the filter screen 10 and the filter cotton 11 can be conveniently replaced and maintained.

[0042] Reference Figure 5 The second maintenance mechanism comprises a second cover plate 26, the second cover plate 26 is arranged on an inner wall of the cooling shell 4, an inner wall of the second cover plate 26 is rotatably sleeved with a second rotating shaft 27, a surface of the second rotating shaft 27 is fixedly sleeved with a gear 28, the gear 28 is rotatably connected with the inner wall of the second cover plate 26, a surface of the gear 28 is engaged with a toothed rod 29, one end of the toothed rod 29 is hingedly connected with a sliding rod 30, a surface of the sliding rod 30 is hingedly connected with a clamping head 31, the clamping head 31 is clamped with the inner wall of the cooling shell 4, and the second spring 32 is arranged between the sliding rod 30 and the inner wall of the second cover plate 26. By arranging the second maintenance mechanism, the components in the cooling shell 4 can be conveniently maintained and used.

[0043] Embodiment 2

[0044] Reference Figure 3 And Figure 7 The connecting mechanism comprises a fixed cylinder 41, the fixed cylinder 41 is communicated with a surface of the rotating connector 40, an inner wall of the fixed cylinder 41 is slidably sleeved with a connecting pipe 42, one end of the connecting pipe 42 is communicated with a surface of the cooling shell 4, a surface of the fixed cylinder 41 is rotatably sleeved with a rotating cylinder 43, an inner wall of the rotating cylinder 43 is hingedly connected with a connecting rod 44, one end of the connecting rod 44 is hingedly connected with a fixing head 45, the fixing head 45 is provided between the inner wall of the fixed cylinder 41 and the third spring 46, a surface of the connecting pipe 42 is provided with a clamping groove 47, one end of the fixing head 45 is clamped with the clamping groove 47, and the second sealing gasket 48 is arranged between the connecting pipe 42 and the inner wall of the fixed cylinder 41. By rotating the rotating cylinder 43, the connecting rod 44 drives the fixing head 45 to be disengaged from the clamping groove 47, and the connecting pipe 42 is taken out. When installing, the connecting pipe 42 is installed in the fixed cylinder 41, the fixing head 45 is clamped with the clamping groove 47 under the action of the third spring 46, and the connecting pipe 42 is fixed, so that the connecting pipe 42 is conveniently installed and removed, the workload is reduced, and the work efficiency is improved.

[0045] Reference Figure 1 , Figure 2 And Figure 3The slotting mechanism comprises a transmission shaft 33, one end of the transmission shaft 33 is connected with the output end of the hydraulic motor through a shaft coupling, a supporting seat 34 is mounted on the surface of the transmission shaft 33, and the supporting seat 34 is bolted with the surface of the mounting frame 1, a slotting head 35 is mounted on the surface of the transmission shaft 33, slotting tooth plates 36 are welded on the surface of the slotting head 35, water spraying holes 37 are formed on the surface of the slotting head 35, and the slotting mechanism is arranged to facilitate slotting.

[0046] With reference to Figure 3 The water supply mechanism comprises a shunt pipe 38, the shunt pipe 38 is mounted on the surface of the transmission shaft 33, the shunt pipe 38 is communicated with a water spraying pipe 39, one end of the water spraying pipe 39 is communicated with the water spraying holes 37, and one end of the shunt pipe 38 is mounted with a rotary connector 40, and the rotary connector 40 is mounted between the transmission shaft 33 and the slotting head 35, the water supply mechanism is arranged to provide high-pressure water to assist slotting.

[0047] With reference to Figure 3 And Figure 8 The backflow prevention mechanism comprises a fixing frame 49, the fixing frame 49 is fixedly sleeved with the inner wall of the connecting pipe 42, the inner wall of the connecting pipe 42 is fixedly sleeved with a limiting ring 50, the surface of the fixing frame 49 is bolted with a telescopic rod 51, one end of the telescopic rod 51 is bolted with a flow resistance plate 52, the fourth spring 53 is arranged between the flow resistance plate 52 and the fixing frame 49, and the fourth spring 53 is sleeved on the surface of the telescopic rod 51, and the surface of the flow resistance plate 52 is inlaid with the third sealing gasket 14, the backflow prevention mechanism is arranged to prevent water backflow, ensure the cleanliness in the cooling shell 4, and improve the practicability.

[0048] The use process is briefly described as follows: the water inlet pipe 13 is connected with the water pump, the water pump supplies water, the water is filtered through the filter screen 10 and then enters the cooling shell 4, the water contacts the heat dissipation fins 5 to take away the heat on the heat dissipation fins 5, and then enters the shunt pipe 38 through the connecting pipe 42 and is sprayed from the water spraying pipe 39 to slot, so that the water utilization rate is greatly improved, when the hydraulic motor 3 works, the rotating block 7 is driven to rotate, the rotating block 7 drives the heat dissipation plate 8 to rotate, the heat dissipation plate 8 rotates to disturb the seawater around the hydraulic motor 3, so that the flowability of the seawater around the hydraulic motor 3 is increased, and the heat dissipation efficiency is further improved, so that the cooling effect is good; the rotating cylinder 43 is rotated, the rotating cylinder 43 drives the connecting rod 44 to move, the connecting rod 44 drives the fixing head 45 to move, the fixing head 45 moves to disengage the fixing head 45 from the clamping groove 47, and the connecting pipe 42 is taken out, when the connecting pipe 42 is installed, one end of the connecting pipe 42 is inserted into the fixing cylinder 41, the fixing head 45 is clamped with the clamping groove 47 under the action of the third spring 46, and the connecting pipe 42 is fixed, so that the connecting pipe 42 is conveniently installed and dismounted.

Claims

1. A trenching apparatus for burying a submarine cable, comprising a mounting frame (1), characterised in that, The surface of the mounting frame (1) is bolted with a fixed block (2), the surface of the fixed block (2) is bolted with a hydraulic motor (3); The surface of the hydraulic motor (3) is provided with a heat dissipation mechanism, the surface of the heat dissipation mechanism is provided with a filtering mechanism, the surface of the filtering mechanism is provided with a mounting mechanism, the surface of the filtering mechanism is provided with a first maintenance mechanism, the surface of the heat dissipation mechanism is provided with a second maintenance mechanism; The output end of the hydraulic motor (3) is provided with a grooving mechanism, the inside of the grooving mechanism is provided with a water supply mechanism, the connection mechanism is provided between the grooving mechanism and the heat dissipation mechanism, the inside of the connection mechanism is provided with an anti-backflow mechanism; The heat dissipation mechanism comprises a cooling shell (4), and the cooling shell (4) is fixedly sleeved with the surface of the hydraulic motor (3); The surface of the hydraulic motor (3) is bolted with a heat dissipation fin (5); One end of the rotor of the hydraulic motor (3) is fixedly sleeved with a rotating block (7), the surface of the rotating block (7) is bolted with a heat dissipation plate (8), and the heat dissipation plate (8) is arranged in an inclined manner; The filtering mechanism comprises a filter box (9), and the surface of the filter box (9) is communicated with the surface of the cooling shell (4); The filter screen (10) is bolted between the inner walls of the filter box (9), and the filter cotton (11) is filled between the filter screens (10); The mounting mechanism comprises a water inlet pipe (13), one end of the water inlet pipe (13) is communicated with the surface of the filter box (9); The grooving mechanism comprises a transmission shaft (33), one end of the transmission shaft (33) is connected with the output end of the hydraulic motor through a shaft coupling, a grooving head (35) is mounted on the surface of the transmission shaft (33), a grooving tooth plate (36) is welded on the surface of the grooving head (35), and a water spraying hole (37) is formed in the surface of the grooving head (35); The water supply mechanism comprises a shunt pipe (38), the shunt pipe (38) is mounted on the surface of the transmission shaft (33), the surface of the shunt pipe (38) is communicated with a water spraying pipe (39), one end of the water spraying pipe (39) is communicated with the water spraying hole (37), one end of the shunt pipe (38) is mounted with a rotary connector (40), and the rotary connector (40) is mounted between the transmission shaft (33) and the grooving head (35); The connection mechanism comprises a fixed cylinder (41), the surface of the fixed cylinder (41) is communicated with the rotary connector (40), a connecting pipe (42) is slidably sleeved on the inner wall of the fixed cylinder (41), the other end of the connecting pipe (42) is communicated with the surface of the cooling shell (4), a rotating cylinder (43) is rotatably sleeved on the surface of the fixed cylinder (41), a connecting rod (44) is hinged on the inner wall of the rotating cylinder (43), the other end of the connecting rod (44) is hinged with a fixed head (45), a third spring (46) is arranged between the fixed head (45) and the inner wall of the fixed cylinder (41), a clamping groove (47) is formed in the surface of the connecting pipe (42), one end of the fixed head (45) is clamped with the clamping groove (47), and a second sealing gasket (48) is arranged between the connecting pipe (42) and the inner wall of the fixed cylinder (41).

2. A trenching apparatus for burying a submarine cable according to claim 1, characterised in that, The heat dissipation fin (5) is made of aluminum alloy material, and the surface of the hydraulic motor (3) is provided with a protective mesh cover (6).

3. A trenching apparatus for burying a submarine cable according to claim 1, characterised in that, The inner wall of the filter box (9) is provided with guide plates (12), the guide plates (12) are staggered, and the guide plates (12) are located between the filter screens (10).

4. A trenching apparatus for burying a submarine cable according to claim 3, characterised in that, The surface of the water inlet pipe (13) is fixedly sleeved with a fixed ring (15), the surface of the fixed ring (15) is rotatably sleeved with a threaded cylinder (16), and the surface of the water inlet pipe (13) is bonded with a first sealing gasket (17).

5. A trenching apparatus for burying a submarine cable according to claim 3, characterised in that, The first maintenance mechanism comprises a first cover plate (18), the inner wall of the first cover plate (18) is rotatably sleeved with a first rotating shaft (19), the surface of the first rotating shaft (19) is fixedly sleeved with a rotating disc (20), and the surface of the rotating disc (20) is hingedly connected with a transmission rod (21). The other end of the transmission rod (21) is hingedly connected with a clamping rod (22), the inner wall of the filter box (9) is provided with a clamping hole (23), one end of the clamping hole (23) is clamped with the clamping rod (22), and the surface of the clamping rod (22) is fixedly sleeved with a limiting plate (24).

6. A trenching apparatus for burying a submarine cable according to claim 1, wherein The second maintenance mechanism comprises a second cover plate (26), the second cover plate (26) is arranged on the inner wall of the cooling shell (4), the inner wall of the second cover plate (26) is rotatably sleeved with a second rotating shaft (27), the surface of the second rotating shaft (27) is fixedly sleeved with a gear (28), and the gear (28) is rotatably connected with the inner wall of the second cover plate (26). The surface of the gear (28) is engaged with a toothed rod (29), the other end of the toothed rod (29) is clamped with a sliding rod (30), the surface of the sliding rod (30) is clamped with a clamping head (31), the clamping head (31) is clamped with the inner wall of the cooling shell (4), and the second spring (32) is arranged between the sliding rod (30) and the inner wall of the second cover plate (26).

7. A trenching apparatus for burying a submarine cable according to claim 2, characterised in that, The surface of the transmission shaft (33) is provided with a supporting seat (34), and the supporting seat (34) is clamped with the surface of the mounting frame (1).

8. A trenching apparatus for burying a submarine cable according to claim 1, characterized in that The anti-backflow mechanism comprises a fixing frame (49), the fixing frame (49) is fixedly sleeved with the inner wall of the connecting pipe (42), the inner wall of the connecting pipe (42) is fixedly sleeved with a limiting ring (50), the surface of the fixing frame (49) is clamped with a telescopic rod (51), one end of the telescopic rod (51) is clamped with a flow resistance plate (52), the fourth spring (53) is arranged between the flow resistance plate (52) and the fixing frame (49), the third sealing gasket (14) is inlaid in the surface of the flow resistance plate (52), and the fourth spring (53) is sleeved on the surface of the telescopic rod (51).

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