A boat-racing device

Abstract

The utility model discloses a boat-beating device, which includes: a telescopic component, a roller component and a buffer component, wherein the telescopic component is provided with a connecting plate that can be telescoped along a first direction; the roller component includes a fixed plate and a roller distributed along the first direction, wherein the fixed plate is opposite to the connecting plate and is arranged at intervals, wherein the roller is located on a side of the fixed plate away from the connecting plate and is rotatably connected to the fixed plate along a second direction, wherein the second direction intersects the first direction; the buffer component includes a guide rod and an elastic member sleeved on the guide rod, wherein one end of the guide rod is connected to the fixing plate, the rod body of the guide rod is slidably penetrated through the connecting plate, and the other end is limitedly abutted against a side of the connecting plate away from the fixing plate, and the elastic member is arranged between the connecting plate and the fixing plate, wherein one end of the elastic member abuts against the fixing plate, and the other end abuts against the connecting plate. The connection reliability of the boat-beating device can be enhanced, and the service life of the boat-beating device can be increased, and the utility model is applied to the field of silicon wafer manufacturing equipment.

Description

Technical Field

[0001] The utility model relates to the field of silicon wafer manufacturing equipment, in particular to a boat-beating device. Background Art

[0002] Graphite boats are made of graphite and have good electrical and thermal conductivity. In the production of solar silicon wafers, graphite boats are used to carry silicon wafers for coating. When the silicon wafers are transferred to the graphite boat, there is a problem of inaccurate positioning of the silicon wafers. A boat-beating device is often used to simulate a human hand beating the graphite boat, so that the silicon wafers in the graphite boat return to their original position under the action of gravity, thereby achieving accurate positioning of the silicon wafers.

[0003] In the related art, the boat-beating device includes a connecting plate, a roller, two guide rods and two springs. The connecting plate is opposite to the roller. Both ends of the roller are provided with connecting rods extending along the axial direction of the roller. The two guide rods are respectively connected to the two connecting rods. The connecting rods are provided with connecting holes. The end surface of one end of the guide rod is provided with a threaded hole. After the connecting hole is aligned with the threaded hole, the guide rod and the roller are connected by bolts. The other end of the guide rod is slidably inserted into the connecting plate. The spring is sleeved outside the guide rod, one end of which is in contact with the connecting rod and the other end is in contact with the connecting plate. When the roller is in contact with the surface of the graphite boat, the connecting plate compresses the spring and moves toward the roller along the guide rod to fix the roller to the surface of the graphite boat under a certain pressure.

[0004] During the actual working process, the graphite boat moves actively, and the movement of the graphite boat will exert a large left and right lateral force on the drum. The rotation of the drum cannot completely release this part of the force, and it will directly act on the connection position between the guide rod and the connecting rod on the boat-beating device. At the same time, the elastic force of the spring is also concentrated on the connection position between the guide rod and the connecting rod, causing local stress concentration, making the bolts connecting the guide rod and the connecting rod easy to loosen or even break, causing the boat-beating assembly to fall off, thereby damaging the graphite boat. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a boat-beating device, which can enhance the connection reliability and increase the service life.

[0006] The boat-patting device according to the embodiment of the utility model comprises:

[0007] A telescopic assembly, provided with a connecting plate capable of telescoping along a first direction;

[0008] A roller assembly, comprising a fixed plate and a roller distributed along the first direction, the fixed plate being opposite to the connecting plate and spaced apart, the roller being located on a side of the fixed plate away from the connecting plate and being rotatably connected to the fixed plate along a second direction, the second direction intersecting the first direction;

[0009] The buffer assembly includes a guide rod and an elastic member sleeved on the guide rod, one end of the guide rod is connected to the fixed plate, the rod body of the guide rod is slidably passed through the connecting plate, and the other end is limitedly abutted against the side of the connecting plate away from the fixed plate, one end of the elastic member abuts against the fixed plate, and the other end abuts against the connecting plate.

[0010] The boat-beating device according to the embodiment of the first aspect of the utility model has at least the following beneficial effects: one end of the guide rod of the buffer assembly is connected by a fixed plate, and the other end of the guide rod is passed through the connecting plate. The connecting plate and the fixed plate can compress the elastic part of the buffer assembly together, so that the buffering force of the elastic part is concentrated on the fixed plate and the connecting plate. The roller is connected to the fixed plate by rotating along the second direction. When the roller is subjected to the reaction force exerted by the graphite boat, the reaction force is concentrated on the connection position between the roller and the fixed plate, so that the buffering force and reaction force exerted on the boat-beating device act on different positions of the fixed plate respectively, thereby avoiding stress concentration, thereby improving the reliability of the connection, and increasing the service life of the boat-beating device.

[0011] According to some embodiments of the utility model, the fixed plate includes a base plate, a rotating shaft and two protruding plates respectively connected to the two ends of the base plate along the second direction, the protruding plates are protruding in a direction away from the connecting plate, the rotating shaft is arranged between the two protruding plates, and the two ends of the rotating shaft are respectively fixed to the two protruding plates.

[0012] According to some embodiments of the present invention, the protruding plate is detachably connected to the base plate.

[0013] According to some embodiments of the utility model, the protruding plate is provided with a connecting through hole along the second direction, the end of the rotating shaft is passed through the connecting through hole from one end of the connecting through hole, the end surface of the rotating shaft is provided with a first threaded hole, and the roller assembly also includes a connecting bolt having a screw portion, and the screw portion is threadedly connected to the first threaded hole from the other end of the connecting through hole.

[0014] According to some embodiments of the utility model, the connecting through hole includes a base hole and a step hole connected to the base hole, the diameter of the step hole is larger than the diameter of the base hole, the step hole is arranged on the opposite side of the protruding plate, and the end of the rotating shaft is passed through the step hole.

[0015] According to some embodiments of the present invention, the connecting bolt further comprises a nut portion, and an anti-loosening member is provided between the nut portion and the protruding plate.

[0016] According to some embodiments of the present invention, a buffer rubber layer is provided on the outer peripheral surface of the drum.

[0017] According to some embodiments of the present utility model, the buffer assembly includes two guide rods, one guide rod is connected between one end and the middle of the fixing plate, and the other guide rod is connected between the other end and the middle of the fixing plate.

[0018] According to some embodiments of the present invention, the guide rod is detachably connected to the fixing plate.

[0019] According to some embodiments of the utility model, the outer peripheral surface of the one end of the guide rod is provided with an external thread, the fixing plate is provided with an internal threaded hole on a side opposite to the connecting plate, and the guide rod is threadedly connected to the internal threaded hole through the external thread.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 It is a structural schematic diagram of a boat-beating device in the related art;

[0023] Figure 2 A schematic diagram of the structure of a boat-patting device according to an embodiment of the utility model;

[0024] Figure 3 It is a schematic partial cross-sectional front view of a boat-racing device according to an embodiment of the utility model;

[0025] Figure 4 for Figure 3 A partial enlarged schematic diagram of part A;

[0026] Figure 5 for Figure 3 A partial enlarged schematic diagram of part B.

[0027] Figure Number:

[0028] Telescopic assembly 100; connecting plate 110; telescopic part 120; driving part 130;

[0029] Drum assembly 200; fixing plate 210; base plate 211; rotating shaft 212; protruding plate 213; connecting through hole 2131; base hole 2132; step hole 2133; drum 220; connecting bolt 230; anti-loosening member 240;

[0030] Buffer assembly 300; guide rod 310; external thread 311; elastic member 320; guide sleeve 330;

[0031] Vibration assembly 400. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, "several" refers to one or more, and "multiple" refers to two or more. If there is a description of "first" or "second", it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] Reference Figure 1 As shown, in the related art, both ends of the roller 220 are provided with connecting rods extending along the axial direction of the roller 220, and the connecting rods are provided with connecting through holes 2131. The end surface of the guide rod 310 is provided with connecting threaded through holes. After the connecting threaded through holes are aligned with the axis of the connecting through holes 2131, the guide rod 310 is locked by bolts to achieve fixed connection between the guide rod 310 and the connecting rods. During use, the elastic member 320 sleeved on the outer circumference of the guide rod 310 will apply a force along the axial direction of the bolt, and the connecting rod will apply a force along the radial direction of the bolt. The bolt will be subjected to radial shear force and axial tensile force. When the bolt is subjected to shear force, the bolt itself is prone to breakage.

[0037] Reference Figures 2 to 5As shown, the embodiment of the utility model proposes a boat-beating device, including: a telescopic assembly 100, a roller assembly 200 and a buffer assembly 300, the telescopic assembly 100 is provided with a connecting plate 110 that can be telescoped along a first direction; the roller assembly 200 includes a fixed plate 210 and a roller 220 distributed along the first direction, the fixed plate 210 is opposite to the connecting plate 110 and is arranged at a distance, the roller 220 is located on a side of the fixed plate 210 away from the connecting plate 110, and is rotatably connected to the fixed plate 210 along a second direction, The second direction intersects with the first direction; the buffer assembly 300 includes a guide rod 310 and an elastic member 320 sleeved on the guide rod 310, one end of the guide rod 310 is connected to the fixed plate 210, the rod body of the guide rod 310 is slidably passed through the connecting plate 110, and the other end is limitedly abutted against the connecting plate 110 along a side away from the fixed plate 210, the elastic member 320 is arranged between the connecting plate 110 and the fixed plate 210, one end of the elastic member 320 abuts against the fixed plate 210, and the other end abuts against the connecting plate 110.

[0038] It should be noted that the graphite boat equipment includes a frame, a graphite boat and a boat-beating device. The boat-beating device is fixedly connected to the top of the frame and is located above the graphite boat. The roller 220 of the roller assembly 200 of the boat-beating device can be lowered to abut against the top of the graphite boat. The graphite boat in the frame can move along the third direction. When the graphite boat moves, the roller 220 in contact with the top of the graphite boat rotates.

[0039] In this embodiment, the telescopic assembly 100 is a telescopic cylinder or a lead screw slider structure. When the telescopic assembly 100 is a telescopic cylinder, the telescopic assembly 100 includes a driving unit 130, a telescopic rod with one end connected to the driving unit 130, and a telescopic unit 120 at the other end of the telescopic rod. The driving unit 130 is connected to an air source. Under the pressure control of the air source, the driving unit 130 drives the telescopic rod to extend and retract along a first direction, thereby driving the telescopic unit 120 to extend and retract along the first direction, so as to drive the roller 220 of the roller assembly 200 to abut against the top of the graphite boat. The driving unit 130 is fixedly connected to the top of the frame through a mounting plate. As another embodiment, when the telescopic assembly 100 is a screw slider structure, the telescopic assembly 100 includes a motor, a rotating screw connected to the motor, a slider threadedly sleeved on the rotating screw, and a telescopic part 120 connected to the slider. The motor drives the rotating screw to rotate around its axis, so that the slider moves along the axis of the rotating screw and drives the telescopic part 120 to move along the axis of the rotating screw. The axis of the rotating screw is set along the first direction. The connecting plate 110 is connected to the telescopic part 120 to telescope along the first direction.

[0040] The fixed plate 210 of the roller assembly 200 is a square plate, and a roller 220 is arranged on one side of the fixed plate 210 away from the telescopic part 120. The roller 220 is connected to the fixed plate 210 by rotation along the second direction, so as to rotate around the second direction, and the force applied to the roller 220 by the movement of the graphite boat is eliminated by rotation, so that the boat assembly can remain relatively still with the graphite boat, and damage to the boat assembly caused by additional force is avoided. Among them, when the first direction is perpendicular to the second direction, the roller 220 is generally cylindrical, so that the outer peripheral surface of the roller 220 can fit the top surface of the graphite boat. In addition, when the second direction intersects with the first direction and remains inclined with the horizontal, the roller 220 can also be in an oblique cone shape, wherein the inclination angle of the oblique cone of the roller 220 is consistent with the inclination angle of the second direction to the horizontal plane, so that the bottom of the outer peripheral surface of the roller 220 can remain horizontal, and then the outer peripheral surface of the roller 220 can fit the top surface of the graphite boat.

[0041] The buffer assembly 300 is disposed between the connecting plate 110 and the fixed plate 210 to buffer the pressure applied by the telescopic assembly 100 to the roller assembly 200. When the telescopic assembly 100 drives the roller assembly 200 to abut against the top of the graphite boat, the distance between the connecting plate 110 and the fixed plate 210 is reduced, the other end of the guide rod 310 of the buffer assembly 300 passes through the connecting plate 110, the elastic member 320 is compressed, and the pressure applied by the telescopic assembly 100 to the roller assembly 200 can be increased linearly through elasticity, the pressure is more controllable, and the roller assembly 200 can be ensured to completely abut against the top of the graphite boat. Even when the graphite boat vibrates up and down along the first direction, the roller 220 of the roller assembly 200 can always fit on the top of the graphite boat under the elastic force of the buffer assembly 300. Among them, the reaction force of the elastic member 320 will be concentrated on the fixed plate 210 and the connecting plate 110.

[0042] The outer peripheral surface of the other end of the guide rod 310 is provided with a flange, and the guide rod 310 abuts against the side of the connecting plate 110 away from the fixed plate 210 through the flange, thereby limiting the movement of the connecting plate 110 in the direction away from the fixed plate 210, so that the connecting plate 110 can only slide between the two ends of the guide rod 310 along the rod body of the guide rod 310, and when the connecting plate 110 slides toward the fixed plate 210, the elastic member 320 between the fixed plate 210 and the connecting plate 110 is compressed along the first direction. In addition, the buffer assembly 300 also includes a guide sleeve 330, through which the guide rod 310 is inserted into the connecting plate 110, and the guide sleeve 330 is fixed on the connecting plate 110, so that the sliding of the guide rod 310 is smoother and the influence of friction is reduced. The guide sleeve 330 is fixed to the connecting plate 110 by bolts along the first direction, so that the connection position of the guide sleeve 330 is only subjected to the tensile force in the first reverse direction, but not to the shear force, thereby improving the connection effect and service life.

[0043] It is worth understanding that, one end of the guide rod 310 of the buffer assembly 300 is connected through the fixed plate 210, and the other end of the guide rod 310 is passed through the connecting plate 110. The connecting plate 110 and the fixed plate 210 can compress the elastic member 320 of the buffer assembly 300 together, so that the buffering force of the elastic member 320 is concentrated on the fixed plate 210 and the connecting plate 110, and the roller 220 is connected to the fixed plate 210 by rotating along the second direction. When the roller 220 is subjected to the reaction force exerted by the graphite boat, the reaction force is concentrated on the connection position between the roller 220 and the fixed plate 210, so that the buffering force and reaction force exerted on the boat-beating device act on different positions of the fixed plate 210 respectively, thereby avoiding stress concentration, thereby improving the reliability of the connection, and increasing the service life of the boat-beating device.

[0044] Reference Figure 2 and Figure 3 As shown, in some embodiments of the utility model, the fixed plate 210 includes a base plate 211, a rotating shaft 212 and two protruding plates 213 respectively connected to the two ends of the base plate 211 along the second direction, the protruding plates 213 are protruding in a direction away from the connecting plate 110, the rotating shaft 212 is arranged between the two protruding plates 213, and the two ends of the rotating shaft 212 are respectively fixed to the two protruding plates 213.

[0045] It is worth understanding that the two protruding plates 213 are fixed to the base plate 211 along the second direction, and the fixing force between the protruding plates 213 and the base plate 211 is along the second direction. The rotating shaft 212 is also fixed between the two protruding plates 213 along the second direction, and the fixing force between the rotating shaft 212 and the protruding plates 213 is along the second direction. When the bolts are used to tighten the protruding plates 213 and the base plate 211, and the protruding plates 213 and the rotating shaft 212 along the second direction, the bolts are only subjected to tensile stress in the second direction, but not shear force, and the tensile strength of the bolts is much greater than their shear strength, so that the service life of the bolts can be longer and they are less likely to be damaged.

[0046] Reference Figure 2 and Figure 3 As shown, in some specific embodiments of the present invention, the protruding plate 213 is detachably connected to the base plate 211 .

[0047] It is worth understanding that the protruding plate 213 and the base plate 211 are detachably connected, which is convenient for maintenance of the protruding plate 213 and the base plate 211, so as to regularly check the connection position of the protruding plate 213 and the base plate 211, timely find out whether there are cracks in the protruding plate 213 or the base plate 211, and replace it more conveniently. In this embodiment, the protruding plate 213 is fixed to the end surface of the base plate 211 by bolts, and the bolts are locked along the second direction.

[0048] Reference Figure 3 and Figure 5As shown, in some specific embodiments of the utility model, the protruding plate 213 is provided with a connecting through hole 2131 along the second direction, the end of the rotating shaft 212 is passed through the connecting through hole 2131 from one end of the connecting through hole 2131, and a first threaded hole is provided on the end surface of the rotating shaft 212. The drum assembly 200 also includes a connecting bolt 230 having a screw portion, and the screw portion is threadedly connected to the first threaded hole from the other end of the connecting through hole 2131.

[0049] It is worth understanding that the rotating shaft 212 is passed through the connecting through hole 2131, and the rotating shaft 212 is in contact with the connecting through hole 2131 to withstand the force of the roller 220 along the first direction. The connecting bolt 230 is located in the first threaded hole of the rotating shaft 212, and will not directly withstand the force along the first direction applied by the roller 220. The force in the first direction is withstand through the rigid connection between the rotating shaft 212 and the protruding plate 213, so that the connecting bolt 230 is not subjected to the shear force along the first direction, and the connecting bolt 230 is less likely to break and fail, and is more reliable to use.

[0050] Reference Figure 3 and Figure 5 As shown, in some specific embodiments of the present utility model, the connecting through hole 2131 includes a base hole 2132 and a step hole 2133 connected to the base hole 2132, the diameter of the step hole 2133 is larger than the diameter of the base hole 2132, the step hole 2133 is arranged on the opposite side of the protruding plate 213, and the end of the rotating shaft 212 is passed through the step hole 2133.

[0051] It is worth understanding that the rotating shaft 212 is inserted into the stepped hole 2133, and the end face of the rotating shaft 212 can directly abut against the bottom surface of the stepped hole 2133, so that the axial length of the rotating shaft 212 is greater than the distance between the two protruding plates 213 and less than the distance between the bottom surfaces of the two stepped holes 2133. The rotating shaft 212 is limited between the two protruding plates 213 and cannot escape from the two protruding plates 213, and the connection is more reliable. Only after one protruding plate 213 is disassembled and separated from the base plate 211, can the rotating shaft 212 be taken out from between the two protruding plates 213 or installed between the two protruding plates 213.

[0052] Reference Figure 3 and Figure 5 As shown, in some specific embodiments of the present invention, the connecting bolt 230 further has a nut portion, and a locking member 240 is provided between the nut portion and the protruding plate 213. It is worth noting that the locking member 240 enhances the connection reliability of the connecting bolt 230 to meet the needs of long-term use, thereby preventing the connecting bolt 230 from loosening due to vibration during long-term use.

[0053] In some specific embodiments of the present invention, a buffer rubber layer is provided on the outer circumference of the roller 220. It is worth noting that the roller 220 contacts the top of the graphite boat through the buffer rubber layer to buffer the contact position between the roller 220 and the graphite boat to avoid rigid contact damage to the roller 220 or the graphite boat.

[0054] Reference Figure 2 and Figure 3 As shown, in some specific embodiments of the present invention, the buffer assembly 300 includes two guide rods 310, one guide rod 310 is connected between one end and the middle of the fixed plate 210, and the other guide rod 310 is connected between the other end and the middle of the fixed plate 210.

[0055] In this embodiment, the two guide rods 310 are centrally symmetrically distributed about the middle part of the fixed plate 210, so that the elastic member 320 disposed outside the two guide rods 310 can be evenly subjected to the pressure applied by the fixed plate 210. The two guide rods 310 are also centrally symmetrically distributed about the middle part of the connecting plate 110, so that the pressure applied by the connecting plate 110 to the two guide rods 310 is evenly distributed.

[0056] Reference Figure 3 and Figure 4 As shown, in some specific embodiments of the present invention, the guide rod 310 is detachably connected to the fixing plate 210. The guide rod 310 is detachably connected to the fixing plate 210, which facilitates the installation and maintenance of the elastic member 320 between the fixing plate 210 and the connecting plate 110.

[0057] Reference Figure 3 and Figure 4 As shown, in some specific embodiments of the present invention, an outer peripheral surface of one end of the guide rod 310 is provided with an external thread 311, and an internal thread hole is provided on a side of the fixing plate relative to the connecting plate 110, and the guide rod 310 is threadedly connected to the internal thread hole through the external thread 311.

[0058] It is worth understanding that the guide rod 310 is directly threadedly connected to the internal threaded hole of the fixed plate 210 through the external thread 311 to achieve locking. The rod body of the guide rod 310 directly bears the shear force. Compared with setting a bolt in the guide rod 310, the shear resistance of the rod body of the guide rod 310 is stronger, making the connection between the guide rod 310 and the fixed plate 210 more reliable.

[0059] Reference Figure 2 As shown, in some specific embodiments of the present invention, the boat-beating device further comprises a vibration assembly 400, which is connected to the fixing plate 210 to vibrate the roller 220, so that the roller 220 can exert a vibration effect of human hand beating the boat on the graphite boat.

[0060] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A boat-racing device, characterized in that: include: A telescopic assembly, provided with a connecting plate capable of telescoping along a first direction; A roller assembly, comprising a fixed plate and a roller distributed along the first direction, the fixed plate being opposite to the connecting plate and spaced apart, the roller being located on a side of the fixed plate away from the connecting plate and being rotatably connected to the fixed plate along a second direction, the second direction intersecting the first direction; The buffer assembly comprises a guide rod and an elastic member sleeved on the guide rod, one end of the guide rod is connected to the fixed plate, the rod body of the guide rod is slidably passed through the connecting plate, and the other end is limitedly abutted against a side of the connecting plate away from the fixed plate, the elastic member is arranged between the connecting plate and the fixed plate, one end of the elastic member abuts against the fixed plate, and the other end abuts against the connecting plate.

2. The boat-patting device according to claim 1, characterized in that: The fixed plate includes a base plate, a rotating shaft and two protruding plates respectively connected to the two ends of the base plate along the second direction, the protruding plates are protruding in a direction away from the connecting plate, the rotating shaft is arranged between the two protruding plates, and the two ends of the rotating shaft are respectively fixed to the two protruding plates.

3. The boat-patting device according to claim 2, characterized in that: The protruding plate is detachably connected to the base plate.

4. The boat-patting device according to claim 2, characterized in that: The protruding plate is provided with a connecting through hole along the second direction, the end of the rotating shaft is inserted into the connecting through hole from one end of the connecting through hole, the end surface of the rotating shaft is provided with a first threaded hole, and the roller assembly also includes a connecting bolt having a screw portion, and the screw portion is threadedly connected to the first threaded hole from the other end of the connecting through hole.

5. The boat-patting device according to claim 4, characterized in that: The connecting through hole includes a base hole and a step hole connected to the base hole, the diameter of the step hole is larger than the diameter of the base hole, the step hole is arranged on the opposite side of the protruding plate, and the end of the rotating shaft is passed through the step hole.

6. The boat-patting device according to claim 4, characterized in that: The connecting bolt also has a nut portion, and an anti-loosening member is arranged between the nut portion and the protruding plate.

7. The boat-patting device according to claim 1, characterized in that: The outer peripheral surface of the drum is provided with a buffer rubber layer.

8. The boat-patting device according to claim 1, characterized in that: The buffer assembly comprises two guide rods, one of which is connected between one end and the middle of the fixing plate, and the other of which is connected between the other end and the middle of the fixing plate.

9. The boat-patting device according to claim 1, characterized in that: The guide rod is detachably connected to the fixing plate.

10. The boat-patting device according to claim 9, characterized in that: The outer peripheral surface of the one end of the guide rod is provided with an external thread, and the fixing plate is provided with an internal thread hole on a surface opposite to the connecting plate, and the guide rod is threadedly connected to the internal thread hole through the external thread.

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