Multi-groove type self-cycloid synchronous tooth bridge type sand sucker

Abstract

The invention discloses a multi-groove type self-cycloid synchronous tooth bridge type sand sucker which comprises a working bridge arranged at the top end of a pool body, a sand sucking assembly arranged on the working bridge, a walking driving assembly and an electric control box. End beams are arranged at the two ends of the working bridge; the sand suction assembly comprises a mounting plate arranged at the bottom of the working bridge, and a sand suction pipe, a sand suction pump and a sand discharge pipe which are arranged on the mounting plate; the driving assembly comprises a speed reducer arranged on the side wall of the working bridge, a self-cycloid driving roller arranged on the lower bottom surface of the end beam and a connecting rack arranged on the pool body; a PLC (Programmable Logic Controller) is arranged in the electric control box; the self-cycloid driving roller is reasonable in structural design, the self-cycloid driving roller is used for replacing a gear, relative abrasion of a conventional gear and rack structure under the unlimited operation condition is reduced, movement synchronism of guide wheels on the two sides of equipment is guaranteed, abrasion of the equipment in the operation process is effectively reduced, the service life of the equipment is prolonged, and the self-cycloid driving roller is suitable for being used and popularized.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to a multi-tank self-oscillating synchronous gear bridge-type sand suction machine. Background Art

[0002] The main equipment used in the horizontal flow grit chamber in the pretreatment system of a sewage treatment plant is the bridge-type sand suction machine. According to different design scales and forms, this equipment usually has several structures such as single-tank and multi-tank. In order to improve the treatment efficiency and sludge removal efficiency of the grit chamber, two new treatment forms, namely swirl aeration and hydrocyclone, have been derived from the horizontal flow tank body.

[0003] Although the processes are different in form, the equipment usually consists of two or more channels arranged side by side. The bridge structure designed on the tank platform supports and drives the sand suction pipe to discharge the grit in the channel. When there are two or more channels, due to the uncertainty of the water flow, the amount and quality of the sand deposited in the channels are different, resulting in different resistances of the sand suction pipes in the channels. During the operation of the equipment, due to the action of the resistance, the equipment will generate an operation deflection, and the equipment will have a rail gnawing phenomenon, and in severe cases, the equipment will even derail. Since the conventional equipment does not have a monitoring device, the system shutdown often occurs, especially in a multi-channel high-operation-load system. The abnormal operation state is also likely to cause problems with the equipment. For example, if one of the sand suction pumps in the multi-channel stops running, the rigid sand suction pipe will be buried in the grit, resulting in a sharp increase in resistance, causing the equipment to deflect and derail during the horizontal operation. Summary of the Invention

[0004] In view of the above existing technical problems, the present invention provides a multi-tank self-oscillating synchronous gear bridge-type sand suction machine.

[0005] The technical solution of the present invention is as follows: A multi-tank self-oscillating synchronous gear bridge-type sand suction machine includes a working bridge arranged at the top end of the tank body, a sand suction assembly, a walking drive assembly, and an electric control box arranged on the working bridge; several sand collection tanks are equidistantly distributed inside the tank body; guide rails are arranged on both sides of the upper end surface of the tank body;

[0006] End beams are arranged at both ends of the working bridge, and guide wheels that are movably clamped with the corresponding guide rails are arranged on the lower bottom surfaces of the two end beams;

[0007] The sand suction assembly includes a mounting plate arranged on the lower bottom surface of the working bridge, a sand suction pipe arranged on the lower bottom surface of the mounting plate, a sand suction pump arranged on the upper end surface of the mounting plate, and a sand discharge pipe that penetrates through the working bridge and extends to the outside of the tank body; the number of the sand suction pipes, sand suction pumps, and sand discharge pipes corresponds to the number of the sand collection tanks; the input ends of each sand suction pump are respectively connected to each sand suction pipe in one-to-one correspondence, and the output ends of each sand suction pump are respectively connected to each sand discharge pipe in one-to-one correspondence;

[0008] The drive assembly includes a speed reducer disposed on the side wall of the working bridge, cycloidal drive rollers respectively disposed on the lower bottom surfaces of the two end beams, and connecting racks disposed on both sides of the upper end surface of the tank body and respectively engaged with the two cycloidal drive rollers; drive shafts respectively connected to the two cycloidal drive rollers in one-to-one correspondence are disposed at both ends of the speed reducer;

[0009] A PLC controller electrically connected to the speed reducer is disposed inside the electric control box.

[0010] Further, it further includes an air compressor disposed on the upper end surface of the working bridge. The output end of the air compressor is connected with a switching valve through a first conduit. Second conduits respectively connected to each sand discharge pipe in one-to-one correspondence are disposed on the switching valve; pinch valves are disposed on each sand discharge pipe, and tuning fork sensors are disposed inside each sand discharge pipe; the air compressor, the switching valve, the pinch valves and the tuning fork sensors are respectively electrically connected to the PLC controller;

[0011] Note: The tuning fork sensor is used to sense the pressure inside the corresponding sand discharge pipe. When the inside of the sand discharge pipe is blocked and the pressure increases, the pinch valve connected to the blocked sand discharge pipe is controlled to close through the PLC controller, and then compressed air is injected into the corresponding sand discharge pipe by the air compressor, so that the blocked sand and gravel inside the sand discharge pipe are discharged, realizing the reopening of the sand discharge pipe.

[0012] Further, tension and compression sensors electrically connected to the PLC controller are disposed at the joints of each sand suction pipe and the mounting plate;

[0013] Note: When the sand content in the sand collection tank is too high, the tension and compression sensor senses an increase in the operating resistance of the corresponding sand discharge pipe, and the PLC controller is used to adjust the operating speed of the speed reducer to discharge more precipitated sand grains from the system, ensuring the operating stability of the equipment.

[0014] Further, the cycloidal drive roller includes a housing connected to the lower bottom surface of the end beam, two synchronous wheels respectively rotatably clamped inside the housing, a connecting shaft rotatably clamped inside the housing and fixedly connected to the two synchronous wheels at the same time, and several synchronous rollers equidistantly distributed between the two synchronous wheels; the connecting shaft is connected to the drive shaft through a coupling;

[0015] Note: During the rotation of the cycloidal drive roller, the clamping effect of the synchronous roller and the connecting rack is utilized to reduce the difference in the operating speeds at both ends of the working bridge and improve the operating stability of the equipment.

[0016] Further, a sliding bearing is disposed at the joint of the synchronous roller and the synchronous wheel;

[0017] Note: By setting the sliding bearing, it is beneficial to slow down the wear of the synchronous roller.

[0018] Furthermore, travel trigger switches are provided at both ends of the upper end face of the pool body, and trigger seats capable of connecting with the travel trigger switches are provided on the outer side walls of the two end beams;

[0019] Description: During the operation of the working bridge, when the trigger seat contacts the travel trigger switch, the PLC controller controls the running direction of the speed reducer, thereby improving the degree of automatic operation of the equipment and further improving the working efficiency of the equipment.

[0020] Furthermore, lifting sliding sleeves are provided on both sides of the lower bottom surface of the working bridge, and lifting seats are slidably clamped in the two lifting sliding sleeves in one-to-one correspondence. Both ends of the mounting plate respectively penetrate through the two lifting sliding sleeves and are fixedly connected to the corresponding lifting seats at the corresponding positions; Lifting motors are provided on both sides of the upper end face of the working bridge, and the output ends of the two lifting motors are respectively connected with lifting lead screws that are threadedly connected to the corresponding lifting seats at the corresponding positions;

[0021] Description: During the movement of the working bridge, according to the height of the sand grains at the bottom of the sand collecting tank, the PLC controller is used to control the start of the lifting motor and drive the lifting lead screw to rotate. By the connection between the lifting lead screw and the lifting seat, the mounting plate drives the sand suction pipe to move up and down inside the sand collecting tank, so as to facilitate adjusting the height of the sand suction port of the sand suction pipe according to the amount of sand inside the sand collecting tank.

[0022] Furthermore, a conical sand suction head is provided at the bottom end of each sand suction pipe, and a barrier net is provided inside each conical sand suction head;

[0023] Description: By providing a conical sand suction head at the bottom end of the sand suction pipe, it is beneficial to improve the aggregation effect of the sand grains, thereby improving the working efficiency of the equipment.

[0024] Furthermore, the lower bottom surface of the mounting plate is slidably clamped with floating plates located inside each sand collecting tank through sliding rods, and a collection net box is provided on each floating plate;

[0025] Description: The floating plate moves on the sliding rod with the change of the height of the sewage level. During the movement of the working bridge, the floating plate is driven to move, so that the pollutants floating on the surface of the sewage enter the collection net box.

[0026] Furthermore, a guardrail is provided on the upper end face of the working bridge;

[0027] Description: By providing a guardrail, safety protection can be provided for the staff when they inspect the equipment.

[0028] The working principle of the present invention is:

[0029] In use, the PLC controller is used to control the start of the speed reducer, and the speed reducer is used to drive the drive shaft to rotate, so that the cycloidal drive roller rolls on the corresponding connecting rack under the driving action of the drive shaft, and drives the working bridge to move at the top of the pool; the sand suction pump is used to suck the sand deposited at the bottom of the sand collecting tank into the internal sand suction pipe, and the sand is discharged through the sand discharge pipe; the tuning fork sensor is used to sense the pressure inside the corresponding sand discharge pipe. When the inside of the sand discharge pipe is blocked and the pressure increases, the pinch valve connected to the blocked sand discharge pipe is controlled to close by the PLC controller, and then the air compressor is used to inject compressed air into the corresponding sand discharge pipe, so that the blocked sand and gravel inside the sand discharge pipe are discharged, realizing the reopening of the sand discharge pipe; when the sand content in the sand collecting tank is too high, and the pull-pressure sensor senses an increase in the running resistance of the corresponding sand discharge pipe, the PLC controller is used to adjust the running speed of the speed reducer to let more precipitated sand grains be discharged from the equipment.

[0030] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0031] First, the structure of the present invention is reasonably designed. By using the clamping action of the cycloidal drive roller and the connecting rack, the stable connection between the working bridge and the pool body is realized. The cycloidal drive roller is used to replace the gear, reducing the relative wear of the conventional gear and rack structure under the condition of unlimited position operation. Through the rotation of the synchronous roller inside the cycloidal drive roller itself, the sliding friction during the biting process of the rack and the synchronous roller is converted into rolling friction, ensuring the synchronism of the movement of the guide wheels on both sides of the equipment, effectively reducing the wear during the operation of the equipment, and extending the service life of the equipment;

[0032] Second, the present invention is provided with a plurality of sand suction pipes at the bottom end of the working bridge, so that the equipment can be suitable for the sand suction work of multi-channel projects, and can effectively control the occurrence of serious abnormal conditions of the equipment caused by multi-point instability, improving the operation stability of the equipment;

[0033] Third, the present invention is provided with a tuning fork sensor inside the sand discharge pipe, and the tuning fork sensor is used to monitor the operation and cleaning of the sand discharge pipe in real time. When the sand discharge pipe is blocked, the air compressor can be used to dredge the blocked sand discharge pipe, ensuring the continuity of the operation of the equipment; at the same time, a pull-pressure sensor is arranged between the sand suction pipe and the mounting plate, effectively avoiding the passive resistance of the rigid structure of the traditional fixed frame and the sand suction pipe under the condition of being blocked, and controlling the elastic operation of the equipment through force feedback, reducing the occurrence of equipment operation accidents in extreme cases of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is the longitudinal sectional view of the invention;

[0035] Figure 2 is the connection schematic diagram of the working bridge and the pool body of the present invention;

[0036] Figure 3 is the top view of the present invention;

[0037] Figure 4 is the present invention Figure 1 partial enlarged schematic view of position A in the present invention;

[0038] Figure 5 is the distribution diagram of the synchronous rollers of the present invention on the synchronous pulley;

[0039] Figure 6 is the present invention Figure 2 partial enlarged schematic view of position B in the present invention;

[0040] Wherein, 1 - tank body, 10 - sand collecting tank, 11 - guiding track, 2 - working bridge, 20 - end beam, 21 - guiding wheel, 22 - guardrail, 3 - sand suction assembly, 30 - mounting plate, 310 - conical sand suction head, 31 - sand suction pipe, 32 - sand suction pump, 33 - sand discharge pipe, 34 - pinch valve, 4 - traveling drive assembly, 40 - reducer, 400 - drive shaft, 41 - cycloidal drive roller, 410 - housing, 411 - synchronous pulley, 412 - connecting shaft, 413 - synchronous roller, 414 - coupling, 415 - sliding bearing, 42 - connecting rack, 5 - electric control box, 6 - air compressor, 60 - first conduit, 61 - switching valve, 62 - second conduit, 7 - stroke trigger switch, 70 - trigger base, 8 - lifting sliding sleeve, 80 - lifting seat, 81 - lifting motor, 82 - lifting lead screw, 9 - floating plate, 90 - sliding rod, 91 - collecting net box. Detailed implementation manners

[0041] Embodiment 1

[0042] As Figure 1 、 2 shown, a multi - groove cycloidal synchronous tooth - type bridge sand suction machine includes a working bridge 2 arranged at the top end of the tank body 1, a sand suction assembly 3, a traveling drive assembly 4 and an electric control box 5 arranged on the working bridge 2; three sand collecting tanks 10 are equidistantly distributed inside the tank body 1; guiding tracks 11 are arranged on both sides of the upper end surface of the tank body 1;

[0043] As Figure 1 、 4 shown, end beams 20 are arranged at both ends of the working bridge 2, and guiding wheels 21 which are movably clamped with the guiding tracks 11 at corresponding positions are arranged on the lower bottom surfaces of the two end beams 20; a guardrail 22 is arranged on the upper end surface of the working bridge 2;

[0044] As Figure 1 、 3As shown in the figure, the sand suction assembly 3 includes a mounting plate 30 provided on the lower bottom surface of the working bridge 2, a sand suction pipe 31 provided on the lower bottom surface of the mounting plate 30, a sand suction pump 32 (a commercially available product) provided on the upper end surface of the mounting plate 30, and a sand discharge pipe 33 that penetrates the working bridge 2 and extends to the outside of the pool body 1; the numbers of the sand suction pipe 31, the sand suction pump 32, and the sand discharge pipe 33 correspond to the number of the sand collection troughs 10; the input ends of the respective sand suction pumps 32 are respectively connected to the respective sand suction pipes 31 in one-to-one correspondence, and the output ends of the respective sand suction pumps 32 are respectively connected to the respective sand discharge pipes 33 in one-to-one correspondence;

[0045] As Figure 1 , 4 , as shown in Figures 6, the driving assembly 4 includes a speed reducer 40 provided on the side wall of the working bridge 2, planetary cycloid driving rollers 41 respectively provided on the lower bottom surfaces of the two end beams 20, and connecting racks 42 provided on both sides of the upper end surface of the pool body 1 and respectively meshed with the two planetary cycloid driving rollers 41; both ends of the speed reducer 40 are provided with driving shafts 400 respectively connected to the two planetary cycloid driving rollers 41 in one-to-one correspondence;

[0046] As Figure 1 shown, inside the electric control box 5, a PLC controller electrically connected to the speed reducer 40 is provided (the speed reducer 40 and the PLC controller used in this embodiment are both products of the prior art).

[0047] Embodiment 2

[0048] The difference between this embodiment and Embodiment 1 lies in that:

[0049] As Figure 2 , 3 shown, it further includes an air compressor 6 provided on the upper end surface of the working bridge 2. The output end of the air compressor 6 is connected to a switching valve 61 through a first conduit 60. The switching valve 61 is provided with second conduits 62 respectively connected to the respective sand discharge pipes 33 in one-to-one correspondence; pinch valves 34 are provided on the respective sand discharge pipes 33, and tuning fork sensors are provided inside the respective sand discharge pipes 33; the air compressor 6, the switching valve 61, the pinch valves 34, and the tuning fork sensors are respectively electrically connected to the PLC controller; the tuning fork sensors sense the pressure inside the corresponding sand discharge pipes 33. When the inside of the sand discharge pipe 33 is blocked and the pressure increases, the PLC controller controls the pinch valve 34 connected to the blocked sand discharge pipe 33 to close, and then the air compressor 6 injects compressed air into the corresponding sand discharge pipe 33, so that the blocked sand and gravel inside the sand discharge pipe 33 are discharged, realizing the reopening of the sand discharge pipe.

[0050] The air compressor 6 used in this embodiment is a product of the prior art. For example, the LY-7GA permanent magnet variable frequency screw air compressor produced by Langqi Compression Machinery (Shanghai) Co., Ltd. can be adopted; the switching valve 61 is a DQW type electric switching valve produced by Tianjin Bernard Automatic Control Technology Co., Ltd.; the pinch valve 34 is a D671X type pneumatic butterfly valve produced by Zhejiang Norton Valve Technology Co., Ltd.; the tuning fork sensor is a KSC type tuning fork sensor produced by Shanghai Chengbang Electronic Technology Co., Ltd.

[0051] Embodiment 3

[0052] The difference between this embodiment and Embodiment 2 lies in:

[0053] As Figure 1 shown, a tension and compression sensor electrically connected to the PLC controller is provided at the connection between each sand suction pipe 31 and the mounting plate 30; when the sand content in the sand collection tank 10 is excessive, and the tension and compression sensor senses an increase in the operating resistance of the corresponding sand discharge pipe 33, the PLC controller is used to adjust the operating speed of the reducer 40, so that more precipitated sand grains are discharged from the system, ensuring the operating stability of the equipment.

[0054] The tension and compression sensor used in this embodiment is a product of the prior art. For example, it can be a DJSW-219 six-axis force sensor produced by Shanghai Dijia Sensing Technology Co., Ltd.

[0055] Embodiment 4

[0056] The difference between this embodiment and Embodiment 3 lies in:

[0057] As Figure 4 、 5 shown, the cycloidal drive roller 41 includes a housing 410 connected to the lower bottom surface of the end beam 20, two synchronous wheels 411 respectively rotatably clamped inside the housing 410, a connecting shaft 412 rotatably clamped inside the housing 1 and fixedly connected to the two synchronous wheels 411 at the same time, and 8 synchronous rollers 413 evenly distributed between the other synchronous wheels 411; the connecting shaft 412 is connected to the drive shaft 400 through a coupling 414; a sliding bearing 415 is provided at the connection between the synchronous roller 413 and the synchronous wheel 411; during the rotation of the cycloidal drive roller 41, the clamping effect between the synchronous roller 413 and the connecting rack 42 is utilized to reduce the difference in the operating speeds at both ends of the working bridge 2, improving the operating stability of the equipment.

[0058] Embodiment 5

[0059] The difference between this embodiment and Embodiment 4 lies in:

[0060] As Figure 2As shown in the figure, travel trigger switches 7 (commercially available products) are provided at both ends of the upper end face of the pool body 1, and trigger seats 70 capable of connecting to the travel trigger switches 7 are provided on the outer side walls of the two end beams 20. During the operation of the working bridge 2, when the trigger seat 70 contacts the travel trigger switch 7, the operation direction of the speed reducer 40 is controlled through the PLC controller, thereby improving the degree of automatic operation of the equipment and further improving the working efficiency of the equipment.

[0061] Embodiment 6

[0062] The difference between this embodiment and Embodiment 5 is as follows:

[0063] As Figure 1 shown, lifting sliding sleeves 8 are provided on both sides of the lower bottom surface of the working bridge 2, and lifting seats 80 are slidably clamped in the two lifting sliding sleeves 8 in a one-to-one correspondence. Both ends of the mounting plate 30 penetrate through the two lifting sliding sleeves 8 respectively and are fixedly connected to the corresponding lifting seats 80 at corresponding positions in a one-to-one correspondence. Lifting motors 81 are provided on both sides of the upper end face of the working bridge 2, and the output ends of the two lifting motors 81 are respectively connected to lifting lead screws 82 that are threadedly connected to the corresponding lifting seats 80 at corresponding positions. During the movement of the working bridge 2, according to the height of the sand grains at the bottom of the sand collection tank 10, the PLC controller is used to control the lifting motor 81 to start and drive the lifting lead screw 82 to rotate. By using the connection between the lifting lead screw 82 and the lifting seat 80, the mounting plate 30 drives the sand suction pipe 31 to move up and down inside the sand collection tank 10, so as to facilitate adjusting the height of the sand suction port of the sand suction pipe 31 according to the amount of sand inside the sand collection tank 10.

[0064] The lifting motor 81 used in this embodiment is a product of the prior art. For example, it can be a YE3 - 0.55KW - 4 type reduction motor produced by Zhejiang Fugui City Electric Co., Ltd.

[0065] Embodiment 7

[0066] The difference between this embodiment and Embodiment 6 is as follows:

[0067] As Figure 1 shown, a conical sand suction head 310 is provided at the bottom end of each sand suction pipe 31, and a barrier net is provided inside each conical sand suction head 310. By providing a conical sand suction head 310 at the bottom end of the sand suction pipe 31, it is beneficial to improve the aggregation effect of the sand grains, thereby improving the working efficiency of the equipment.

[0068] Embodiment 8

[0069] The difference between this embodiment and Embodiment 7 is as follows:

[0070] As Figure 2As shown, the lower bottom surface of the mounting plate 30 is slidably clamped through sliding rods 90 with floating plates 9 respectively located inside each sand collecting groove 10, and a collecting net box 91 is arranged on each floating plate 9; the floating plates 9 move on the sliding rods 90 with the change of the height of the sewage level, and the floating plates 9 are driven to move during the movement of the working bridge 2, so that the pollutants floating on the surface of the sewage enter the inside of the collecting net box 91.

Claims

1. A multi-groove self-oscillating cycloidal synchronous gear bridge sand suction machine, characterized in that, It includes a working bridge (2) arranged at the top of the pool body (1), a sand suction assembly (3), a walking drive assembly (4) and an electric control box (5) arranged on the working bridge (2); several sand collection grooves (10) are equidistantly distributed inside the pool body (1); guide rails (11) are arranged on both sides of the upper end surface of the pool body (1). End beams (20) are arranged at both ends of the working bridge (2), and guide wheels (21) that are movably clamped with the guide rails (11) at corresponding positions are arranged on the lower bottom surfaces of the two end beams (20). The sand suction assembly (3) includes a mounting plate (30) arranged on the lower bottom surface of the working bridge (2), a sand suction pipe (31) arranged on the lower bottom surface of the mounting plate (30), a sand suction pump (32) arranged on the upper end surface of the mounting plate (30), and a sand discharge pipe (33) that penetrates the working bridge (2) and extends to the outside of the pool body (1); the numbers of the sand suction pipes (31), the sand suction pumps (32) and the sand discharge pipes (33) correspond to the number of the sand collection grooves (10); the input ends of the respective sand suction pumps (32) are respectively connected to the respective sand suction pipes (31) in one-to-one correspondence, and the output ends of the respective sand suction pumps (32) are respectively connected to the respective sand discharge pipes (33) in one-to-one correspondence. The drive assembly (4) includes a speed reducer (40) arranged on the side wall of the working bridge (2), planetary drive rollers (41) respectively arranged on the lower bottom surfaces of the two end beams (20), and connection racks (42) arranged on both sides of the upper end surface of the pool body (1) and respectively meshed with the two planetary drive rollers (41); drive shafts (400) respectively connected to the two planetary drive rollers (41) in one-to-one correspondence are arranged at both ends of the speed reducer (40). A PLC controller electrically connected to the speed reducer (40) is arranged inside the electric control box (5).

2. The multi-groove self-oscillating cycloidal synchronous gear bridge type sand suction machine according to claim 1, wherein It further includes an air compressor (6) arranged on the upper end surface of the working bridge (2). The output end of the air compressor (6) is connected with a switching valve (61) through a first conduit (60). Second conduits (62) respectively connected to the respective sand discharge pipes (33) in one-to-one correspondence are arranged on the switching valve (61); pinch valves (34) are arranged on the respective sand discharge pipes (33), and tuning fork sensors are arranged inside the respective sand discharge pipes (33); the air compressor (6), the switching valve (61), the pinch valves (34) and the tuning fork sensors are respectively electrically connected to the PLC controller.

3. A multi-groove self-oscillating cycloidal synchronous tooth bridge type sand suction machine according to claim 1, characterized in that, Tensile and compressive sensors electrically connected to the PLC controller are arranged at the joints of the respective sand suction pipes (31) and the mounting plate (30).

4. A multi-groove self-oscillating cycloidal synchronous gear bridge type sand suction machine according to claim 1, characterized in that, The planetary drive roller (41) includes a housing body (410) connected to the lower bottom surface of the end beam (20), two synchronous wheels (411) respectively rotatably clamped inside the housing body (410), a connecting shaft (412) rotatably clamped inside the housing body (1) and fixedly connected to the two synchronous wheels (411) at the same time, and several synchronous rollers (413) equidistantly distributed between the two synchronous wheels (411); the connecting shaft (412) is connected to the drive shaft (400) through a coupling (414).

5. A multi-tank self-rotating cycloidal synchronous gear bridge type sand suction machine according to claim 1, characterized in that, Both ends of the upper end surface of the pool body (1) are provided with travel trigger switches (7), and the outer side walls of the two end beams (20) are provided with trigger seats (70) that can be connected to the travel trigger switches (7).

6. The multi-groove self-rotating synchronous gear bridge type sand suction machine according to claim 1, characterized in that, Lifting sleeves (8) are provided on both sides of the lower bottom surface of the working bridge (2), and lifting seats (80) are slidably connected inside the two lifting sleeves (8) in a one-to-one correspondence. The two ends of the mounting plate (30) respectively pass through the two lifting sleeves (8) and are respectively fixedly connected to the lifting seats (80) at corresponding positions in a one-to-one correspondence; lifting motors (81) are provided on both sides of the upper end surface of the working bridge (2), and the output ends of the two lifting motors (81) are respectively connected to lifting screws (82) threadedly connected to the lifting seats (80) at corresponding positions in a one-to-one correspondence.

7. A multi-groove self-rotating cycloidal synchronous gear bridge type sand suction machine according to claim 1, characterized in that, The bottom surface of the mounting plate (30) is slidably engaged with floating plates (9) located inside each sand collecting trough (10) through a sliding rod (90), and each floating plate (9) is provided with a collecting net box (91).

8. A multi-tank self-oscillating cycloidal synchronous gear bridge type sand suction machine according to claim 1, characterized in that, A floating plate (9) is arranged on the bottom surface of the mounting plate (30), and a collecting net box (91) is arranged on the floating plate (9).

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