CN111895056B

CN111895056B - Clutch device for boat tractor and boat tractor

Info

Publication number: CN111895056B
Application number: CN202010593146.7A
Authority: CN
Inventors: 陈新元; 程志文
Original assignee: Huayou Tianyu Technology Wuhan Co ltd
Current assignee: Huayou Tianyu Technology Wuhan Co ltd
Priority date: 2020-06-26
Filing date: 2020-06-26
Publication date: 2021-08-31
Anticipated expiration: 2040-06-26
Also published as: CN111895056A

Abstract

The embodiment of the application provides a clutch device for a boat tractor and the boat tractor, and relates to the field of machinery to solve the problem that a jaw clutch in the boat tractor breaks down easily. The clutch device may include: the driving belt, the driving belt wheel and the driven belt wheel are in belt transmission connection; a first tension wheel and a second tension wheel which are respectively arranged opposite to the tight edge and the loose edge of the transmission belt; the first cam is positioned at a first position, and the first tensioning wheel tightly presses the transmission belt; the first cam is located at the second position, and the first tensioning wheel is far away from the transmission belt; the second cam is positioned at a third position, and the second tension wheel compresses the transmission belt; the second cam is located at a fourth position, and the second tension wheel is far away from the transmission belt; the first driving device is used for enabling the second cam to be located at the third position when the first cam is located at the second position, and enabling the second cam to be located at the fourth position when the first cam is located at the first position; and the second driving device is used for enabling the first cam to be located at the second position and the second cam to be located at the fourth position.

Description

Clutch device for boat tractor and boat tractor

Technical Field

The application relates to the field of machinery, in particular to a clutch device for a boat tractor and the boat tractor.

Background

In the related art, the power transmission and disconnection of the running wheels are generally achieved by providing a dog clutch in the boat tractor. During the working process of the boat tractor, the load of the driving wheel is large, and when teeth in the jaw clutch are mutually embedded, the teeth are easy to break, so that the jaw clutch breaks down.

Disclosure of Invention

The embodiment of the application provides a clutch device for a boat tractor and the boat tractor, and aims to solve the problem that a jaw clutch in the boat tractor is prone to failure.

In a first aspect, the present application provides a clutching device for a boat tractor, comprising: the device comprises a transmission belt, a driving belt wheel, a driven belt wheel, a first tensioning wheel, a second tensioning wheel, a first cam, a second cam, a first driving device and a second driving device; wherein the content of the first and second substances,

the transmission belt, the driving belt wheel and the driven belt wheel are in belt transmission connection;

the first tensioning wheel is arranged opposite to the tight edge of the driving belt wheel when rotating in the positive direction, the second tensioning wheel is arranged opposite to the loose edge of the driving belt wheel when rotating in the positive direction,

the first cam is connected with the first tensioning wheel, the first cam is located at a first position, the first tensioning wheel presses the transmission belt, the first cam is located at a second position, and the first tensioning wheel is far away from the transmission belt; the second cam is connected with the second tensioning wheel, the second tensioning wheel is located at a third position, the second tensioning wheel presses the transmission belt, the second cam is located at a fourth position, and the second tensioning wheel is far away from the transmission belt;

the first driving device is used for enabling the first cam to be located at the second position and the second cam to be located at the third position when the driving belt wheel rotates in the forward direction; the first driving device is also used for enabling the first cam to be located at the first position and the second cam to be located at the fourth position when the driving belt wheel rotates reversely;

the second driving device is used for enabling the first cam to be located at the second position, and the second cam is located at the fourth position so as to cut off the power between the driving pulley and the driven pulley.

Optionally, the length of the transmission belt is set such that the transmission belt slips from the driving pulley or the driven pulley if both the first tension pulley and the second tension pulley are far away from the transmission belt, and the driving pulley drives the driven pulley to rotate by using the transmission belt if at least one of the first tension pulley and the second tension pulley presses the transmission belt.

Optionally, the clutch device further comprises a first bracket, a second bracket, a first elastic member and a second elastic member;

the first tensioning wheel is rotatably arranged on the first bracket, one end of the first bracket is connected with the first elastic piece, and the other opposite end of the first bracket is abutted to the first cam; the second tensioning wheel is rotatably arranged on the second bracket, one end of the second bracket is connected with the second elastic piece, and the other opposite end of the second bracket is abutted to the second cam.

Optionally, the first cam is slidable between the first position and the second position, and the second cam is slidable between the third position and the fourth position.

Optionally, the first cam and the second cam are disposed adjacent to each other, the first driving device includes a rotating rod, the rotating rod is rotatably disposed, a first pushing member and a second pushing member are symmetrically disposed on the rotating rod along a rotating portion of the rotating rod, the first pushing member is disposed opposite to the first cam, and the second pushing member is disposed opposite to the second cam.

Optionally, the first pusher abuts the first cam, and the second pusher abuts the second cam; the dwang has the rotation handle portion, the rotation handle portion is operated in order to drive the dwang rotates.

Optionally, the second driving device includes an operating rod, the operating rod is rotatably disposed, and a third pushing member is disposed at one end of the operating rod, and the third pushing member is disposed opposite to the first cam and the second cam, respectively.

Optionally, the third pusher abuts at least one of the first cam and the second cam; the operating lever has an operating handle portion that is operated to move the first cam to the second position and the second cam to a fourth position.

In a second aspect, embodiments of the present application provide a boat tractor comprising a first clutch device and a second clutch device, the first clutch device being any one of the clutch devices of the first aspect, and the second clutch device being any one of the clutch devices of the first aspect.

Optionally, the boat tractor further comprises a power device, a gearbox, a first traveling wheel, a second traveling wheel and a boat body, wherein the gearbox is in transmission connection with the power device, an output shaft of the gearbox is in transmission connection with a driving pulley of the first clutch device and a driving pulley of the second clutch device respectively, a driven pulley of the first clutch device is in transmission connection with the first traveling wheel, and a driven pulley of the second clutch device is in transmission connection with the second traveling wheel.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

in the embodiment of the application, when the driving pulley rotates in the forward direction, the first cam can be located at the second position by using the first driving device, the second cam is located at the third position, the first tension pulley can be far away from the transmission belt, and the second tension pulley compresses the transmission belt, so that the power on the driving pulley can be transmitted to the driven pulley; when the driving belt wheel rotates reversely, the first cam can be located at the first position by using the first driving device, the second cam is located at the fourth position, the first tension wheel can be enabled to press the transmission belt, and the second tension wheel is far away from the transmission belt and can transmit the power on the driving belt wheel to the driven belt wheel; the first cam may be located at the second position and the second cam may be located at the fourth position using the second driving means to perform power cut-off between the driving pulley and the driven pulley. Because the embodiment of the application realizes the transmission and the cutting off of the power through the belt transmission, when the load is suddenly increased in the belt transmission, the transmission belt can slip, and the components in the separation device are not easy to overload and damage; and the transmission belt in the belt transmission system is generally a standard component, and the transmission belt is easier to purchase and replace after being damaged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic view of a first clutch device in a first state according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a first clutch device in a second state according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram illustrating a first clutch device in a third state according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a method for determining slack side and tight side of a belt drive system according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a method for determining slack side and tight side of a belt drive system according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a tensioner arrangement provided by an embodiment of the present application;

FIG. 7 is a schematic view of a second clutch device provided in an embodiment of the present application;

FIG. 8 is a schematic view of a first driving device in a first state according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of the first driving device in a second state according to the embodiment of the present disclosure;

FIG. 10 is a schematic view of a second driving device in a first state according to an embodiment of the present disclosure;

fig. 11 is a schematic view of a second driving device in a second state according to an embodiment of the present disclosure;

fig. 12 is a schematic layout diagram of a first driving device and a second driving device provided in an embodiment of the present application

Fig. 13 is a schematic view of a boat tractor according to an embodiment of the present disclosure.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, a clutch device 100 provided in an embodiment of the present application may include: the drive belt 110, the drive pulley 120, the driven pulley 130, the first tension pulley 140, the second tension pulley 150, the first cam 1402, the second cam 1502, the first driving device (not shown), and the second driving device (not shown).

The transmission belt 110, the driving pulley 120 and the driven pulley 130 are in transmission connection.

The first tension pulley 140 is disposed opposite to a tight side when the driving pulley 120 rotates in the forward direction, and the second tension pulley 150 is disposed opposite to a loose side when the driving pulley 120 rotates in the forward direction.

The first cam 1402 is coupled to the first tension wheel 140, the first cam 1402 being in a first position wherein the first tension wheel 140 compresses the belt 110, the first cam 1402 being in a second position wherein the first tension wheel 140 is spaced away from the belt 110; the second cam 1502 is coupled to the second tensioner 150, the second cam 1502 is in a third position with the second tensioner 150 compressing the belt 110, the second cam 1502 is in a fourth position with the second tensioner 150 spaced away from the belt 110.

The first driving device is used for enabling the first cam 1402 to be located at the second position and the second cam 1502 to be located at the third position when the driving pulley 120 rotates in the forward direction; the first drive means is also configured to cause the first cam 1402 to be in the first position and the second cam 1502 to be in the fourth position when the driving pulley 120 is rotated in the reverse direction.

The second driving means is used to cause the first cam 1402 to be located at the second position and the second cam 1502 to be located at the fourth position to perform power cut-off between the driving pulley 120 and the driven pulley 130.

It should be noted that the forward direction described in the embodiments of the present application may refer to a clockwise direction in the drawings, and the reverse direction may refer to a counterclockwise direction. Of course, the forward direction and the reverse direction are only used for distinguishing each other, for example, in other embodiments of the present application, the forward direction may refer to a counterclockwise direction in the drawings, and the reverse direction may refer to a clockwise direction.

Alternatively, in the embodiment of the present application, the length of the transmission belt 110 may be set such that the transmission belt 110 slips with the driving pulley 120 or the driven pulley 130 if both the first tension pulley 140 and the second tension pulley 150 are away from the transmission belt 110, and the driving pulley 120 may drive the driven pulley 130 to rotate using the transmission belt 110 if at least one of the first tension pulley 140 and the second tension pulley 150 presses the transmission belt 110.

In an embodiment of the present application, the first tensioning wheel 140 may be connected with a first elastic member 1401, and the first elastic member 1401 may serve to press the first tensioning wheel 140 against the transmission belt 110. The second tensioner 150 may be connected to a second elastic member 1501, and the second elastic member 1501 may be used to press the second tensioner 150 against the transmission belt 110.

The first tension wheel 140 may be rotatably provided on the first frame 1403, one end of the first frame 1403 may be connected with the first elastic member 1401, and the opposite end may be connected with the first cam 1402, and in particular, the first frame 1403 may abut against the first cam 1402. Of course, in other embodiments of the present application, the first cam 1402 may be formed with a groove (not shown), and the end of the first frame 1403 may be inserted into the groove of the first cam 1402.

The first cam 1402 is slidable, and the first cam 1402 is slidable between a first position and a second position, as shown in fig. 1 or 3, where the first cam 1402 is located may be referred to as the second position. When the first cam 1402 is in the second position, the first cam 1402 may move the first tensioning wheel 140 away from the drive belt 110. It should be noted that, in the embodiments of the present application, the distance may refer to a distance between the two, and of course, the distance may also be moved to a direction away from each other by a certain distance, which is not described in detail again. As shown in fig. 2, the position in which the first cam 1402 is located may be referred to as a first position. When the first cam 1402 is located at the first position, the first tension wheel 140 may press the transmission belt 110 by the first elastic member 1401.

The second tensioning wheel 150 may be rotatably disposed on the second bracket 1503, one end of the second bracket 1503 may be connected to the second elastic member 1501, and the other opposite end may be connected to the second cam 1502, and specifically, the second bracket 1503 may abut against the second cam 1502. Of course, in other embodiments of the present application, the second cam 1502 may be provided with a groove (not shown), and the end of the second frame 1503 may be embedded in the groove of the second cam 1502.

The second cam 1502 is slidable, and the second cam 1502 is slidable between a third position and a fourth position, as shown in fig. 2 or 3, where the second cam 1502 may be located may be referred to as the fourth position. When the second cam 1502 is in the fourth position, the second cam 1502 may move the second tensioner 150 away from the drive belt 110. As shown in fig. 1, the position in which the second cam 1502 is located may be referred to as a third position. When the second cam 1502 is located at the third position, the second tension pulley 150 can press the transmission belt 110 under the action of the second elastic member 1501.

Alternatively, in the embodiment of the present application, the first driving device and the second driving device may be linear motors, hydraulic cylinders, or devices composed of a rotating motor and a mechanism capable of converting a rotary motion into a linear motion. And will not be described in detail hereinafter. In an embodiment of the present application, the first driving device may include a first sub-driving device and a second sub-driving device, and the first cam 140 may be located at the second position and the second cam 150 may be located at the third position, or the first cam 140 may be located at the first position and the second cam 150 may be located at the fourth position by controlling the first sub-driving device and the second sub-driving device. The first cam may be located at the second position and the second cam may be located at the fourth position by controlling the second driving device, so that the first tension pulley 140 and the second tension pulley 150 may be both away from the transmission belt 110, and the transmission belt 110 may be slipped to cut off the power transmission between the driving pulley 120 and the driven pulley 130.

In this way, in the embodiment of the present application, when the driving pulley 120 rotates in the forward direction, the first cam 1402 may be located at the second position by the first driving device, the second cam may be located at the third position, the first tension pulley 140 may be located away from the transmission belt 110, the second tension pulley 150 may press the transmission belt 110, and the power of the driving pulley 120 may be transmitted to the driven pulley 130; when the driving pulley 120 rotates in the reverse direction, the first cam 1402 can be located at the first position by the first driving device, the second cam can be located at the fourth position, the first tension pulley 140 can be pressed against the transmission belt 110, and the second tension pulley 150 can be away from the transmission belt 110, so that the power of the driving pulley 120 can be transmitted to the driven pulley 130; the first cam 1402 may be located at the second position and the second cam may be located at the fourth position using the second driving means to perform power cut-off between the driving pulley 120 and the driven pulley 130. Because the embodiment of the application realizes the transmission and the cut-off of the power through the belt transmission, when the load is suddenly increased in the belt transmission, the transmission belt 110 can slip, and the components in the clutch device 100 are not easy to overload and damage; and the transmission belt 110 in the belt transmission system is a standard component generally, and the transmission belt 110 is easier to purchase and replace after being damaged.

With regard to the judgment of the slack side and the tight side of the transmission belt, reference is made to fig. 4 and 5, and fig. 4 and 5 show a belt transmission system including a transmission belt 11, a driving pulley 12, and a driven pulley 13. When the driving pulley 12 rotates in the direction shown in fig. 4 (for convenience of description, it may be referred to as forward rotation), the first driving belt portion 11a located at the upper portion of the driving pulley 12 pulls the driven pulley 13 to rotate, the driving belt of the first driving belt portion 11a is in a tensioned state, and the first driving belt portion 11a is a tight edge. Correspondingly, the second drive belt portion 11b is loose-edged. When the driving pulley 12 rotates in the direction shown in fig. 5 (for convenience of description, it may be referred to as reverse rotation), the third belt portion 11c located at the lower portion of the driving pulley 12 pulls the driven pulley 13 to rotate, the belt of the fourth belt portion 11c is in a tensioned state, and the third belt portion 11c is a tight edge. Correspondingly, the fourth driving belt portion 11d is loose-edged.

Alternatively, referring to fig. 6, in the embodiment of the present application, the clutch device may include a frame 160, and optionally, the first tension wheel 140 may be hinged to the frame 160, wherein the frame 160 may refer to a mounting frame for mounting various components in the clutch device 100. Optionally, in the embodiment of the present application, the second tensioning wheel 150 may also be hinged on the frame 160.

Alternatively, referring to fig. 7, the first driving device 170 may include a rotating rod 1701, and the rotating rod 1701 may be rotatably provided on the frame 160, and the rotating rod is symmetrically provided with a first pushing member 1702 and a second pushing member 1703 with respect to a rotation point of the rotating rod. The first pushing member 1702 is disposed opposite to the first cam 140 for pushing the first cam 140 to move. The second pusher 1703 is disposed opposite to the second cam 150, and is used for pushing the second cam 150 to move. Thus, when the rotation lever 1701 rotates, the first cam 140 can be pushed to move from the first position to the second position, and at the same time, the second cam 150 can be made to move from the fourth position to the third position; alternatively, the first cam 140 may be pushed to move from the second position to the first position, and at the same time, the second cam 150 may be caused to move from the third position to the fourth position.

Referring to fig. 8 and 9, the rotation lever 1701 may have a rotation handle portion 1701a, and the rotation handle portion 1701a may be located at an end of the rotation lever 1701 distant from the first pusher 1702 or the second pusher 1703, and the rotation lever 1701 may be rotated by operating the rotation handle portion 1701 a. The first driving device 170 may further include a first stop 1704 and a second stop 1705. Referring to fig. 8, when the rotation rod 1701 is rotated such that the first cam 140 is located at the second position and the second cam 150 is located at the third position, the position of the rotation rod 1701 may be restricted by the second stopper 1705. Referring to fig. 9, when the rotation rod 1701 is rotated such that the first cam 140 is located at the first position and the second cam 150 is located at the fourth position, the position of the rotation rod 1701 may be restricted by the first stopper 1704.

Referring to fig. 10 and 11, in an embodiment of the present application, the second driving device 180 may include an operating rod 1801, the operating rod 1801 may be rotatably disposed on the frame 160, one end of the operating rod 1801 may have a third pusher 1802, and the third pusher 1802 may be disposed opposite to both the first cam 1402 and the second cam 1502. An end of the lever 1801 remote from the third pusher 1802 may have an operating handle portion 1801 a. When the user controls the operating handle portion 1801a to rotate the operating lever 1801, the third pusher 1802 may cause the first cam 1402 to be located at the second position and the second cam 1502 to be located at the fourth position. Thus, it is possible to distance both the first tension pulley 140 and the second tension pulley 150 from the transmission belt 110, thereby cutting off the power transmission between the driving pulley 120 and the driven pulley 130.

It should be noted that, in the embodiment of the present application, the first driving device 170 and the second driving device 180 may be arranged in a spatially staggered manner, for example, referring to fig. 12, the first driving device 170 and the second driving device 180 may be arranged in a staggered manner in the thickness direction of the first cam 1402 or the second cam 1502 to avoid interference between the first driving device 170 and the second driving device 180.

In an embodiment of the present application, referring to fig. 1 and 8, when the driving pulley 120 rotates in the forward direction, a user may operate the first driving device 170 such that the first cam 1402 is located at the second position and the second cam 1502 is located at the third position, thereby moving the first tension pulley 140 away from the transmission belt 110, and the second tension pulley 150 compresses the transmission belt, thereby compressing the slack side of the transmission belt 110 and transmitting the power of the driving pulley 120 to the driven pulley 130.

Referring to fig. 2 and 9, when the driving pulley 120 rotates in the reverse direction, the user may operate the first driving device 170 such that the first cam 1402 is located at the first position and the second cam 1502 is located at the fourth position, thereby allowing the first tension pulley 140 to press against the transmission belt 110 and the second tension pulley 150 to be located away from the transmission belt, thereby allowing the slack side of the transmission belt 110 to be pressed, and enabling the power of the driving pulley 120 to be transmitted to the driven pulley 130.

Referring to fig. 3 and 11, when the user needs to cut off the power transmission, the second driving device may be operated such that the first cam 1402 is located at the second position and the second cam 150 is located at the fourth position, so that the slip of the transmission belt 110 may appear and the power on the driving pulley 120 cannot be transmitted to the driven pulley, thereby cutting off the power transmission between the driving pulley 120 and the driven pulley 130.

Note that, in the present embodiment, the first driving device 170 may include a rotation lever 1701, and the rotation lever 1701 may be provided with a rotation handle portion 1701a, and the rotation lever 1701 may be rotated by a manual force. The second driving device 180 may include an operation rod 1801, and the operation rod 1801 may be provided with an operation handle portion 1801a, and the operation rod 1801 may be driven to rotate by a manual force.

It should be noted that the boat tractor is generally used in paddy fields, and rescue equipment is difficult to enter the paddy fields, so that when the scheme of the jaw clutch is adopted, the boat tractor cannot be driven out of the paddy fields after the jaw clutch is damaged, and the boat tractor must be manually pulled out, which causes great inconvenience for maintenance. And the clutch device that this application embodiment provided, because adopt the scheme of belt drive, when system load was too big, the drive belt can skid the idle running, and can not lead to the part damage of boat tractor. Even the drive belt damages, because the drive belt generally is the standard part, the user can purchase the belt in repair shop on the town, and the drive belt is changed and is not had the technical difficulty, and the user can remove the trouble of boat tractor by oneself after changing the drive belt, and the user of being convenient for uses.

Referring to fig. 13, the present embodiment provides a boat 200, and the boat 200 may include a first clutch device 230 and a second clutch device (not shown), wherein the first clutch device 230 may be any one of the clutch devices 100 described above, and the second clutch device may be any one of the clutch devices 100 described above.

In an embodiment of the present application, the boat 200 may further include a power plant 210, a gearbox 220, a first road wheel 240, a second road wheel (not shown), a hull 250. The power plant 210 may be an internal combustion engine, an electric motor, or the like.

The gearbox 220 may be in driving connection with the power unit 210, alternatively, the gearbox 220 may be in driving connection with the power unit 210 using a belt drive system, so that power from the power unit 210 may be transmitted to the gearbox.

An output shaft of the transmission 220 may be in driving connection with a driving pulley of the first clutch device 230 and a driving pulley of the second clutch device, respectively. The driven pulley of the first clutch device 230 may be in transmission connection with the first running wheel 240, so that when the driven pulley of the first clutch device 230 is in power connection with the driving pulley of the first clutch device 230, power may be transmitted to the first running wheel 240, and the first running wheel 240 may be driven to rotate. The driven pulley of the second clutch device can be in transmission connection with the second running wheel, so that when the driven pulley of the second clutch device is in power connection with the driving pulley of the second clutch device, power can be transmitted to the second running wheel, and the second running wheel can be driven to rotate.

It should be noted that, when the power of the driven pulley of the first clutch device 230 is disconnected from the power of the driving pulley of the first clutch device 230 and the power of the driven pulley of the second clutch device is connected to the power of the driving pulley of the second clutch device, the first running wheel 240 falls into the soil, the first running wheel 240 stops rotating, the second running wheel normally rotates, and the boat 200 can turn in the direction of the first running wheel 240. When the power of the driven pulley of the second clutch device is cut off from the power of the driving pulley of the second clutch device, and the power of the driven pulley of the first clutch device is connected with the power of the driving pulley of the first clutch device, the second running wheel sinks into the soil, the second running wheel stops rotating, the first running wheel normally rotates, and the boat tractor 200 can turn towards the direction of the second running wheel. When the power of the driven pulley of the first clutch device is cut off from the power of the driving pulley of the first clutch device, and the power of the driven pulley of the second clutch device is cut off from the power of the driving pulley of the second clutch device, the first running wheel and the second running wheel stop rotating because the first running wheel and the second running wheel are both sunk into soil, and the boat tractor stops moving. In this way, the turning and parking of the boat tractor can be realized.

In addition, in the embodiment of the present application, the rotation direction of the output shaft of the gearbox 220 can be adjusted, and the forward and backward movement of the boat tractor can be realized by adjusting the forward rotation or the reverse rotation of the first clutch device 230 and the second clutch device.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the embodiments of the application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A clutch device for a boat tractor, comprising: the device comprises a transmission belt, a driving belt wheel, a driven belt wheel, a first tensioning wheel, a second tensioning wheel, a first cam, a second cam, a first driving device and a second driving device; wherein the content of the first and second substances,

the first tensioning wheel and a tight edge of the driving belt wheel are oppositely arranged when rotating in the forward direction, and the second tensioning wheel and a loose edge of the driving belt wheel are oppositely arranged when rotating in the forward direction;

2. Clutch device according to claim 1,

the length of the transmission belt is set to be such that the transmission belt slips from the driving pulley or the driven pulley if the first tensioning wheel and the second tensioning wheel are both far away from the transmission belt, and the driving pulley drives the driven pulley to rotate by using the transmission belt if at least one of the first tensioning wheel and the second tensioning wheel presses the transmission belt.

3. Clutch device according to claim 1,

the clutch device further comprises a first bracket, a second bracket, a first elastic piece and a second elastic piece;

the first tensioning wheel is rotatably arranged on the first bracket, one end of the first bracket is connected with the first elastic piece, and the other opposite end of the first bracket is abutted to the first cam;

the second tensioning wheel is rotatably arranged on the second bracket, one end of the second bracket is connected with the second elastic piece, and the other opposite end of the second bracket is abutted to the second cam.

4. Clutch device according to claim 3,

the first cam is slidable between the first position and the second position, and the second cam is slidable between the third position and the fourth position.

5. Clutch device according to claim 4,

the first cam is disposed adjacent to the second cam,

the first driving device comprises a rotating rod, the rotating rod is arranged in a rotating mode, a first pushing part and a second pushing part are symmetrically arranged on the rotating position of the rotating rod along the rotating rod, the first pushing part is arranged opposite to the first cam, and the second pushing part is arranged opposite to the second cam.

6. Clutch device according to claim 5,

the first pushing part is abutted with the first cam, and the second pushing part is abutted with the second cam;

the dwang has the rotation handle portion, the rotation handle portion is operated in order to drive the dwang rotates.

7. Clutch device according to claim 5,

the second driving device comprises an operating rod, the operating rod is arranged in a rotating mode, a third pushing piece is arranged at one end of the operating rod, and the third pushing piece is arranged opposite to the first cam and the second cam respectively.

8. Clutch device according to claim 7,

the third pusher abuts at least one of the first cam and the second cam;

the operating lever has an operating handle portion that is operated to move the first cam to the second position and the second cam to a fourth position.

9. A boat tractor, comprising a first clutch device as claimed in any one of claims 1 to 8 and a second clutch device as claimed in any one of claims 1 to 8.

10. The boat tractor of claim 9, further comprising a power plant, a gearbox, a first road wheel, a second road wheel, and a hull,

the transmission case is in transmission connection with the power device, an output shaft of the transmission case is in transmission connection with a driving belt wheel of the first clutch device and a driving belt wheel of the second clutch device respectively, a driven belt wheel of the first clutch device is in transmission connection with the first travelling wheel, and a driven belt wheel of the second clutch device is in transmission connection with the second travelling wheel.