CN220349902U - Aquatic object collecting device - Google Patents

Abstract

The embodiment of the utility model discloses a device for collecting objects in water. The device comprises: the fixed rod, tooth portion and connecting portion, tooth portion includes a plurality of first teeth, connecting portion and a plurality of the one end of first tooth all with fixed rod fixed connection, a plurality of first teeth along first direction protrusion in the fixed rod, between the adjacent first tooth and connecting portion with form the clearance between the first tooth, connecting portion is provided with connection structure, connection structure is suitable for being connected with the rope.

Description

Aquatic object collecting device

Technical Field

The utility model relates to the technical field of water operation equipment, in particular to a water object collecting device

Background

When the operation is carried out on water or on shore, objects in the water generally exist, and the operation is influenced. These objects need to be removed before the job can be performed. However, the objects are scattered, or the number of the objects is large, a great deal of time and manpower are required for cleaning the objects, so that the operation difficulty of collecting the objects on water is large, and the operation period is long.

Therefore, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a novel technical scheme of a water object collecting device, so as to solve the problem of high water object collecting difficulty in the prior art.

According to a first aspect of the present utility model there is provided an aquatic object collection device. The collecting device comprises: the fixed rod, tooth portion and connecting portion, tooth portion includes a plurality of first teeth, connecting portion and a plurality of the one end of first tooth all with fixed rod fixed connection, a plurality of first teeth along first direction protrusion in the fixed rod, between the adjacent first tooth and connecting portion with form the clearance between the first tooth, connecting portion is provided with connection structure, connection structure is suitable for being connected with the rope.

Optionally, the device further comprises a supporting rod, the supporting rod is arranged at intervals with the fixing rod, the supporting rod is fixed on the first tooth, and the supporting rod is located on one side of the stretching direction of the fixing rod.

Optionally, a side of the support rod facing away from the fixing rod forms a blade.

Optionally, a floating structure is further included, the floating structure being coupled to the fixed rod, the floating structure being adapted to generate buoyancy.

Optionally, the floating structure comprises a floating ball, and the floating ball is detachably connected with the fixing rod.

Optionally, the connecting part further comprises a rope, the connecting structure comprises a connecting ring, one end of the connecting rod is connected with the fixing rod, the connecting ring is located at one end of the connecting rod opposite to the fixing rod, and the rope is suitable for being connected with the connecting ring.

Optionally, the length of the connecting rod is greater than or equal to the length of the first tooth.

Optionally, the tooth part further includes a plurality of second teeth, the plurality of second teeth are connected with the fixing rod, the plurality of second teeth protrude from the fixing rod along a second direction, and the second direction is different from the first direction.

Optionally, the first direction is perpendicular to the second direction, and the plurality of second teeth protrude from two sides of the fixing rod along the first direction.

Optionally, a plurality of the first teeth are disposed in parallel with the connecting portion; or alternatively

The first teeth are arranged in parallel, and the included angle between the connecting part and the plane where the first teeth are arranged is an acute angle.

Optionally, the first tooth is detachably connected with the fixing rod, the first tooth comprises a connecting end, external threads are arranged outside the connecting end, the fixing rod is provided with a through hole, the connecting end penetrates through the fixing rod, the connecting end is in threaded connection with two nuts, and the fixing rod is clamped between the two nuts; the length of the connecting rod is greater than or equal to the length of the first tooth; the fixing rod comprises a square section bar; the underwater object collecting device is made of metal, wood, plastic or ceramic; the tooth part further comprises a plurality of second teeth, the second teeth are connected with the fixed rod, the second teeth protrude out of the fixed rod along a second direction, the second direction is different from the first direction, and the length of the first teeth is larger than that of the second teeth.

In an embodiment of the utility model, the connection structure is fixedly connected with the rope when in use. The operator holds the collection device and throws the collection device to the object to be collected. One end of the rope is thrown out with the collecting device. The other end of the rope is located near the operator. The operator then pulls the collection device from the other end of the cord to bring the collection device closer to the operator. The first tooth and the connecting portion are both moved toward the operator. Since the first teeth protrude from the fixing bar, the object to be collected can be collected together with the fixing bar. The objects to be collected are for example aquatic weeds, nets or other objects that can float on the water. As the operator pulls the collection device, the objects to be collected are collected, for example to shore. The collecting device can effectively collect objects to be collected in water.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Description of the drawings:

fig. 1 is a perspective view of an underwater object collecting apparatus according to an embodiment of the present utility model.

Fig. 2 is a front view of an aquatic object collecting apparatus according to an embodiment of the present utility model.

Fig. 3 is a left side view of an aquatic object collecting apparatus according to an embodiment of the present utility model.

Fig. 4 is a front view of an aquatic object collecting apparatus according to another embodiment of the present utility model.

Fig. 5 is a left side view of an aquatic object collecting apparatus according to another embodiment of the present utility model.

Fig. 6 is a front view of an aquatic object collecting apparatus according to still another embodiment of the present utility model.

Fig. 7 is a left side view of a aquatic object collecting apparatus according to still another embodiment of the present utility model.

Reference numerals illustrate:

101. a fixed rod; 102. a first tooth; 1021. a nut; 103. a connection part; 1031. a connecting rod; 1032. a connecting ring; 104. a support rod; 1041. a blade; 105. a second tooth; 106. a floating ball; 1061. quick-dismantling the clamping ring; 1062. an L-shaped connecting plate; 1063. and (5) a mounting ring.

Detailed Description

Hereinafter, embodiments of the present utility model will be described in detail. In order to avoid unnecessary detail, well-known structures or functions will not be described in detail in the following embodiments.

Approximating language, as used in the following examples, may be applied to create a quantitative representation that could permissibly vary without resulting in a change in the basic function. Accordingly, a numerical value modified by a language such as "about", "left and right", etc. is not limited to the exact numerical value itself. In some embodiments, "about" means that the values that it is permitted to correct vary within plus or minus ten percent (10%), for example, "about 100" means any value between 90 and 110. Further, in the expression "about a first value to a second value", both the first and second values are corrected at about the same time. In some cases, the approximating language may be related to the precision of a measuring instrument.

Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

In one embodiment of the utility model, an aquatic object collection device is provided. As shown in fig. 1 to 2, the collecting device includes: a fixed rod 101, a tooth portion and a connecting portion 103. The tooth portion includes a plurality of first teeth 102, and the connecting portion 103 and a plurality of first teeth 102 are fixedly connected to the fixing rod 101. A plurality of the first teeth 102 protrude from the fixing lever 101 in a first direction. Gaps are formed between adjacent first teeth 102 and between the connecting portion 103 and the first teeth 102. The connection portion 103 is provided with a connection structure. The connecting structure is adapted to be connected with a rope.

Specifically, at least one of the fixing lever 101, the tooth portion, and the connecting portion 103 is made of metal, plastic, ceramic, wood, or the like. The first teeth 102 are straight, tapered or curved teeth. The connecting portion 103 and the first tooth 102 are fixed to the fixing lever 101 by bolting, welding, caulking, clamping, or the like. The first teeth 102 protrude radially from the fixing rod 101. For example, the connection portion 103 is located at a central position in the axial direction of the fixing lever 101, and the plurality of first teeth 102 are symmetrically disposed on both sides of the connection portion 103. The arrangement mode enables the structure of the collecting device to be more regular, and the center of gravity to be more centered. Gaps are formed between adjacent first teeth 102 and between the connecting portion 103 and the first teeth 102. The gap, the first tooth 102 and the connecting rod 1031 are capable of receiving and seizing objects to be collected in the water, so that the objects to be collected can move together with the collecting device.

When in use, the connecting structure is fixedly connected with the rope. The operator holds the collection device and throws the collection device to the object to be collected. One end of the rope is thrown out with the collecting device. The other end of the rope is located near the operator. The operator then pulls the collection device from the other end of the cord to bring the collection device closer to the operator. Both the first tooth 102 and the connecting portion 103 move towards the operator. Since the first teeth 102 protrude from the fixing bar 101, objects to be collected can be collected together with the fixing bar 101. The objects to be collected are for example aquatic weeds, nets or other objects which can float on or in the water. As the operator pulls the collection device, the objects to be collected are collected, for example to shore. The collecting device can effectively collect objects to be collected in water.

In addition, the collecting device has simple structure and easy processing and manufacturing.

In one example, as shown in fig. 1 and 2, the support rod 104 is spaced apart from the fixing rod 101. The support bar 104 is fixed to the first teeth 102, and is located on one side of the fixing bar 101 in the stretching direction.

In this example, the stretching direction refers to the direction in which the collecting device is stretched. The fixing lever 101 is fixed to one end of the plurality of first teeth 102. The support bar 104 is fixed to the middle portions of the plurality of first teeth 102.

The material of the support rod 104 is, for example, metal, plastic, ceramic, wood, etc. The support bar 104 may be fixed to the sides of the plurality of first teeth 102; or may be sleeved outside each first tooth 102. The connection between the support bar 104 and the first tooth 102 may be, but is not limited to, bolting, clamping, welding, riveting, rope binding, etc. For example, the first plurality of teeth 102 are equal in length. The support bar 104 is connected to the middle of the plurality of first teeth 102. The middle portion may be at the midline of the first tooth or may be offset from the midline. In this way the structural strength of the collecting device can be effectively improved. In use, the first tooth 102 is not easily bent.

Further, the support bar 104 can bring the center of gravity of the collection device entirely near the ends of the plurality of first teeth 102. This makes the first teeth 102 more prone to downward, thereby enabling an increase in the collection area of the collection device for the objects to be collected, and an increase in the collection efficiency.

In one example, a side of the support bar 104 facing away from the fixed bar 101 forms a blade 1041.

For example, as shown in fig. 1, 5, and 6, the support rod 104 is sheet-shaped. A support bar 104 is fixed to the middle of each first tooth 102 by a bolt. The side of the support bar 104 facing away from the fixing bar 101 (i.e. the side closer to the operator) forms a cutting edge 1041. The blade 1041 is capable of cutting objects in the water, such as aquatic weeds. The cut aquatic weed is collected via the plurality of first teeth 105. The blade 1041 allows the aquatic weed to be cut off rapidly, thereby improving the collection efficiency of the collection device.

Of course, the structure of the support bar 104 is not limited to the above-described embodiment, but may be an L-shaped structure. One edge of the L-shaped structure is adapted to be secured to the first plurality of teeth and the edge of the other edge forms a blade 1041. In one example, the collection device further comprises a floating structure. The floating structure is connected to the fixed rod 101, the floating structure being adapted to generate buoyancy.

The floating structure is spherical, cuboid, hemispherical, etc. The floating structure is fixed to the fixing rod 101 using ropes, wires, or the like. The floating structure is capable of floating on the water surface. For example, the density of the material of the floating structure is less than the density of water, or the overall displacement of the floating structure is greater than the weight of the floating structure. The floating structure can prevent the collecting device from sinking into the water. The floating structure is made of plastics, rubber, silica gel and the like.

Furthermore, the floating structure is connected to the fixing rod 101, which enables the fixing rod 101 to float on the water surface, and the first teeth 102 are partially submerged in the water, thereby increasing the collecting area of the collecting device.

Of course, the floating structure is not limited to the above embodiment, and those skilled in the art can select according to actual needs. The manner of connecting the floating structure to the fixing lever 101 is not limited to the above-described embodiment.

In one example, the floating structure includes a floating ball 106. The floating ball 106 is detachably connected with the fixing rod 101.

The float 106 is a ball made of plastic, wood, foam, or the like. The floating ball 106 is of a hollow structure or a solid structure. The float 106 is provided with holes for attachment of fasteners. The fastener may be, but is not limited to, a rope, a wire, a bolt, or the like.

As shown in fig. 7, the floating ball 106 is spherical. The structure has the characteristic of uniform stress. The float 106 is fixed to the fixing rod 101 by a mounting ring 1063. A mounting ring 1063 is secured to one side of the stationary bar 101. The quick release snap ring 1062 is passed through the aperture of the float 106 and the rope is attached to the mounting ring 1063 to secure the float 106 to the mounting ring 1063. Quick release snap ring 1062 includes a snap ring body and a hinge. The snap ring body is provided with a quick-release opening. The hinge piece is hinged with the snap ring body. The hinge piece can open and close the quick-release opening. Quick release collar 1062 facilitates connection and disconnection of floating ball 106 to mounting ring 1063.

As shown in fig. 4 to 5, an L-shaped connection plate 1062 is fixed to one end of the first tooth 102. One end of the first tooth 102 clamps one side of the L-shaped connection plate 1062 together with the side surface of the fixing lever 101. The other edge of the L-shaped connecting plate 1062 is provided with a quick release snap ring 1062. The snap ring body is linked to the other side of the L-shaped connection plate 1062 via a quick release opening. The other side is provided with a through hole for passing through the snap ring body. The clasp body extends through the bore of the float 106. Quick release snap ring 1062 facilitates connection and disconnection of floating ball 106 to and from L-shaped web 1062.

Of course, the floating structure is not limited to the above embodiment, and those skilled in the art can select according to actual needs.

In one example, the collection device further comprises a rope, as previously described. The rope may be, but is not limited to, cotton, nylon, steel wire, flexible strap, and the like. The connection portion 103 includes a connection bar 1031. The connection structure includes a connection ring 1032. One end of the connecting rod 1031 is connected to the fixing rod 101. The connecting ring 1032 is positioned at an end of the connecting rod 1031 opposite the fixing rod 101, and the rope is connected to the connecting ring 1032.

In this example, the connecting ring 1032 is secured to the fixed rod 101 by a connecting rod 1031. The connection rod 1031 is fixed to the fixing rod 101 by bolting, welding, riveting, or the like. The connecting ring 1032 is integrally formed with the connecting rod 1031 or the two are secured together by welding, bonding, clamping, threaded connection, or the like. The connecting ring 1032 may be a closed ring structure or an open ring structure. The connection ring 1032 is a circular ring, rectangular ring, oval ring, or the like. The attachment ring 1032 facilitates securing of the cord.

Further, a circumferentially extending annular groove is provided on the connecting ring 1032. The rope can be embedded in the annular groove when connected. This secures the position of the cord on the attachment ring 1032 and the cord is not easily loosened.

Of course, the connection portion 103 and the connection structure are not limited to the above-described embodiments. Those skilled in the art can make the settings according to actual needs.

In one example, as shown in fig. 1-7, the tooth portion further includes a plurality of second teeth 105. A plurality of the second teeth 105 are coupled to the fixing lever 101. The plurality of second teeth 105 protrude from the fixing rod 101 in a second direction. The second direction is different from the first direction.

In this example, the first direction is perpendicular to the second direction. For example, the first direction is the direction in which the user pulls the collection device back after throwing the collection device. The first direction is horizontal or near horizontal. The second direction is perpendicular to the first direction. The second direction is vertical or near vertical. The second teeth 105 are also capable of intercepting and entraining aquatic objects. In this way the first tooth 102 and the second tooth 105 are able to collect objects in the water from different directions, thereby significantly improving the collection efficiency of the collection device.

Furthermore, the second tooth 105 is fixed to the fixed rod 101, which enables the center of gravity of the collecting device to be brought closer to the fixed rod 101, thereby enabling the collecting device to be thrown to a greater distance.

Of course, the first direction and the second direction are not limited to be vertical, and may be acute angles, and those skilled in the art may set the first direction and the second direction according to actual needs.

In one example, as shown in fig. 1, 3, 5, and 6, the length of the first tooth 102 is 2 to 3 times the length of the second tooth 105. This enables the collection device to occupy less space.

In one example, as shown in fig. 1 and 3, the plurality of second teeth 105 protrude from both sides of the fixing bar 101 in the first direction.

For example, the second teeth 105 pass through holes in the fixing rod 101 so as to be able to protrude from opposite sides of the fixing rod 101. In this way, the second teeth 105 on both sides of the fixed bar 101 have the effect of collecting objects in the water, and the operator does not need to distinguish which side of the collecting device faces upwards when in use, thus making it easy to use the collecting device.

Of course, the arrangement of the second teeth 105 is not limited to the above embodiment, and may be set by those skilled in the art according to actual needs.

In one example, as shown in fig. 1 and 2, the diameter of the first tooth 102 is greater than or equal to the diameter of the second tooth 105. Because the length of the first tooth 102 is greater than that of the first tooth 102, the structural strength of the first tooth 102 is higher by the arrangement mode, and the service life of the collecting device can be effectively prolonged.

It should be noted that the cross-section of the first teeth 102 and the second teeth 105 may be, but not limited to, circular, oval, rectangular, triangular, etc. Those skilled in the art can make the settings according to actual needs.

In one example, as shown in fig. 5, a plurality of the first teeth 102 are disposed in parallel with the connection portion 103. For example, the plurality of first teeth 102 and the connecting portion 103 are arranged in the same row, and the arrangement mode makes the structure of the collecting device simple and the processing and manufacturing easy.

In other examples, as shown in fig. 6, the plurality of first teeth 102 are disposed in parallel, and the included angle between the connecting portion 103 and the plane where the plurality of first teeth 102 are located is an acute angle. In this example, the plurality of first teeth 102 are located in the same row, and the connecting portion 103 protrudes from the row in which the plurality of first teeth 102 are located. The acute angle enables the plurality of first teeth 102 together with the connecting portion 103 to form a gripping effect on the aquatic objects, thereby making the collection effect of the aquatic objects more remarkable.

The larger the included angle is, the better the collecting effect of the collecting device on objects in water is, but the resistance to the collecting device is obviously improved when an operator recovers the collecting device. On the contrary, the smaller the included angle is, the smaller the resistance is when the collecting device is recovered, but the collecting effect is deteriorated. In one example, the included angle is less than or equal to 45 °. The angle gives consideration to the small resistance of the collecting device during recovery and the good collecting effect on objects in water.

In one example, as shown in fig. 1 and 5, the first tooth 102 is detachably connected to the fixing rod 101, the first tooth 102 includes a connection end, an external thread is disposed outside the connection end, the fixing rod 101 is provided with a through hole, the connection end passes through the fixing rod 101, two nuts 1021 are screwed on the connection end, and the fixing rod 101 is clamped between the two nuts 1021; the fixing rod 101 comprises a square section bar; the underwater object collecting device is made of metal, wood, plastic or ceramic; the tooth part further comprises a plurality of second teeth 105, the second teeth 105 are connected with the fixing rod 101, the second teeth 105 protrude out of the fixing rod 101 along a second direction, the second direction is different from the first direction, and the length of the first teeth 102 is greater than that of the second teeth 105.

In this example, the first tooth 102 has a connection end for connection with the fixing bar 101. The connecting end is provided with external threads. The fixing lever 101 has a through hole. The length of the portion of the connection end provided with the external thread is greater than the width of the fixing rod 101. The external threads protrude from the through hole at both sides of the through hole. Both side portions of the through hole are provided with nuts 1021. The first tooth 102 is fixed to the fixing rod 101 by the clamping action of the two nuts 1021 on the fixing rod 101.

Furthermore, the length of the first teeth 102 can be adjusted by two nuts 1021 to accommodate the collection of different objects in the water.

In this example, the fixing bar 101 comprises a square profile. The square section bar is easy to process through holes. The two walls of the square profile, which are clamped by the nuts 1021, can be elastically deformed, so that the connection of the fixing bar 101 to the first tooth 102 becomes stronger. Optionally, the underwater object collecting device is made of metal, wood, plastic or ceramic, and the above materials can keep the inherent shape, so as to provide supporting force for collecting the underwater objects.

In this example, the length of the first tooth 102 is longer than the length of the second tooth 105, so that the weight can be reduced, and the first direction is substantially identical to the direction of the pulling force when the collecting device is recovered, and the second direction is perpendicular to the direction of the pulling force, so that the collecting device receives less resistance during the recovery process due to the shorter length of the second tooth 105, and the recovery of the collecting device is facilitated.

In this example, as shown in fig. 1, the length of the connecting rod 1031 is greater than or equal to the length of the first tooth 102.

In this example, the length of the connecting rod 1031 and the first tooth 102 refers to the axial dimension of the connecting rod 1031 and the first tooth 102. The length of the connecting rod 1031 is not less than the length of the first tooth 102. In this way, the connection ring 1032 can protrude beyond the first tooth 102, thereby facilitating connection of the cord to the connection ring 1032.

Preferably, the length of the connecting bar 1031 is 2 to 4 times the length of the first tooth 102. In this example, the connecting bar 1031 is convenient to hold, thereby facilitating the throwing of the collecting device.

In some examples, the length of the fixation rod 101 is 20 cm to 70 cm. The length of the fixing rod 101 refers to the dimension of the fixing rod 101 in the axial direction thereof. The fixing rod 101 has a width and a height of 0.5 cm to 3 cm. The first teeth 102 have a length of 5 cm to 30 cm. The first teeth 102 have an outer diameter of 0.5 cm to 2 cm. The length of the connecting bar 1031 is 15 cm to 40 cm. The length of the support bar 104 is 20 cm to 70 cm.

Of course, the size of the collecting device is not limited to the above-described embodiment, and a person skilled in the art may set it according to actual needs.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An aquatic object collecting apparatus, comprising: dead lever (101), tooth portion and connecting portion (103), tooth portion includes a plurality of first teeth (102), connecting portion (103) and a plurality of the one end of first tooth (102) all with dead lever (101) fixed connection, a plurality of first teeth (102) along first direction protrusion in dead lever (101), between adjacent first tooth (102) and connecting portion (103) with form the clearance between first tooth (102), connecting portion (103) are provided with connection structure, connection structure is suitable for being connected with the rope.

2. The underwater object collecting device as claimed in claim 1, further comprising a support bar (104), the support bar (104) being disposed at a distance from the fixing bar (101), the support bar (104) being fixed to the first tooth (102), the support bar (104) being located on one side of the fixing bar (101) in a stretching direction.

3. The aquatic object collecting device according to claim 2, wherein a side of the support bar (104) facing away from the stationary bar (101) forms a blade.

4. The aquatic object collecting apparatus according to claim 1, further comprising a floating structure connected to the stationary bar (101), the floating structure being adapted to generate buoyancy.

5. The aquatic object collecting apparatus according to claim 4, wherein the floating structure comprises a floating ball (106), the floating ball (106) being detachably connected with the fixing rod (101).

6. The aquatic object collecting device according to claim 1, further comprising a rope, the connecting portion (103) comprising a connecting rod (1031), the connecting structure comprising a connecting ring (1032), one end of the connecting rod (1031) being connected with the fixing rod (101), the connecting ring (1032) being located at an end of the connecting rod (1031) opposite to the fixing rod (101), the rope being adapted to be connected with the connecting ring (1032).

7. The aquatic object collecting apparatus according to claim 1, wherein the tooth portion further comprises a plurality of second teeth (105), the plurality of second teeth (105) being connected to the fixing rod (101), the plurality of second teeth (105) protruding from the fixing rod (101) in a second direction, the second direction being different from the first direction.

8. The aquatic object collecting apparatus according to claim 7, wherein the first direction is perpendicular to the second direction, and the plurality of second teeth (105) protrude on both sides of the fixing rod (101) in the first direction.

9. The aquatic object collecting apparatus according to any one of claims 1 to 8, wherein a plurality of the first teeth (102) are arranged in parallel with the connecting portion (103); or alternatively

The plurality of first teeth (102) are arranged in parallel, and an included angle between the connecting part (103) and a plane where the plurality of first teeth (102) are located is an acute angle.

10. The aquatic object collecting device according to claim 1, wherein the first tooth (102) is detachably connected with the fixing rod (101), the first tooth (102) comprises a connecting end, an external thread is arranged outside the connecting end, the fixing rod (101) is provided with a through hole, the connecting end penetrates through the fixing rod (101), two nuts are connected with the connecting end in a threaded manner, and the fixing rod (101) is clamped between the two nuts; the connecting portion (103) comprises a connecting rod (1031), the length of the connecting rod (1031) is greater than or equal to the length of the first tooth (102); the fixing rod (101) comprises a square section bar; the underwater object collecting device is made of metal, wood, plastic or ceramic; the tooth part further comprises a plurality of second teeth (105), the second teeth (105) are connected with the fixed rod (101), the second teeth (105) protrude out of the fixed rod (101) along a second direction, the second direction is different from the first direction, and the length of the first teeth (102) is larger than that of the second teeth (105).