Stepless speed change transmission mechanism of boat tractor

Abstract

The utility model discloses a stepless speed change transmission mechanism of a boat tractor, which relates to the technical field of transmission mechanisms, and comprises a main body unit, a transmission unit arranged at the side part of the main body unit, a buffer unit arranged in the transmission unit, and a connecting unit arranged on the surface of the transmission unit, the main body unit comprises a threaded rod with two ends opposite in rotation direction, a moving part mounted on the peripheral side surface of the threaded rod, and a shifting part arranged on the side part of the moving part; the transmission unit comprises a rotating shaft arranged on the side portion of the threaded rod, a fixed wheel installed on the side wall of the rotating shaft and a transmission wheel movably installed on the circumferential side face of the rotating shaft. According to the stepless speed change transmission mechanism of the boat tractor, through the arrangement of the main body unit and the transmission unit, convenient speed change adjustment is achieved, the structure is simple, and speed increase is fast.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission mechanisms, in particular to a stepless speed-changing transmission mechanism for a tractor-tillage vessel. Background Art

[0002] The mechanized tillage boat is an ideal machine for implementing protective tillage in paddy fields. The bottom of the boat glides close to the ground, and it does not require deep plowing, groove rolling, or damage to the soil structure. In addition to being suitable for operations in basic farmland, deep mud fields, breeding pond bottoms, and aquatic vegetable fields, it can also be used as a traction machine for tidal flats and swamps. The existing mechanized tillage boats are all gear-shifted mechanized tillage boats, and they all operate at one or several fixed speeds.

[0003] The patent application CN211550442U discloses a continuously variable transmission mechanism for a motor-tillage boat, which belongs to the technical field of transmission equipment for motor-tillage boats. The continuously variable transmission mechanism for the motor-tillage boat includes a diesel engine, a hydraulic continuously variable transmission device and an output reducer; a diesel engine is fixedly installed at one end of the motor-tillage boat frame; an input shaft is installed in the motor-tillage boat frame at one end of the diesel engine; one end of the input shaft is connected to the output end of the diesel engine; a hydraulic continuously variable transmission device is fixedly installed on the motor-tillage boat frame on one side of the input shaft; the continuously variable transmission mechanism for the motor-tillage boat is specially designed for the use characteristics of the motor-tillage boat, which can enable the motor-tillage boat to achieve continuously variable speed in each gear without affecting the output power of the motor-tillage boat, thereby solving the problem that the existing motor-tillage boat cannot operate normally during deceleration, and meeting people's use needs.

[0004] Although the above scheme can be combined into a single-stage continuously variable transmission group to achieve high torque power transmission, and can also be combined into a two-stage continuously variable transmission group to expand the transmission ratio range, its continuously variable transmission mechanism has a complex structure and is more troublesome to adjust the speed, resulting in slow speed increase. For this reason, we propose a continuously variable transmission mechanism for a mechanized tiller boat. Utility Model Content

[0005] The main purpose of the utility model is to provide a continuously variable transmission mechanism for a tractor-tillage boat, which solves the problem that the continuously variable transmission mechanism has a complex structure and is troublesome in speed regulation, resulting in slow speed increase, by setting a main unit and a transmission unit.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A continuously variable transmission mechanism for a tractor-tillage boat comprises a main body unit, a transmission unit arranged on the side of the main body unit, a buffer unit arranged inside the transmission unit, and a connection unit arranged on the surface of the transmission unit;

[0008] The main unit comprises a threaded rod with two ends rotating in opposite directions, a moving member installed on the peripheral side of the threaded rod, and a toggle member arranged on the side of the moving member;

[0009] The transmission unit comprises a rotating shaft arranged on the side of the threaded rod, a fixed wheel installed on the side wall of the rotating shaft, and a transmission wheel movably installed on the peripheral side of the rotating shaft.

[0010] Preferably, the shifting member comprises a shift fork mounted on a side wall of the moving member, and a synchronizer mounted on the side wall of the shift fork and sleeved on a peripheral side of the shifting member.

[0011] Preferably, the main unit further comprises a driving motor installed at the input end of the threaded rod.

[0012] Preferably, the transmission unit comprises a rotation separation device which is mounted on the inner wall of the synchronizer and movably connected to the rotating shaft.

[0013] Preferably, the buffer unit comprises a fixing ring installed on the inner side wall of the transmission wheel, a fixing groove provided on the side wall of the fixing ring, a spring installed in the fixing groove, and an annular plate installed on the end of the spring.

[0014] Preferably, the buffer unit further comprises an anti-slip pad installed on the surface of the annular plate.

[0015] Preferably, the connecting unit comprises a rubber pad mounted on the inner side wall of the fixed wheel, and a speed-changing belt movably arranged between the two rotating shafts.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the utility model, by setting the main unit and the transmission unit, when the speed adjustment is needed, the driving motor drives the threaded rod to rotate, and because the threaded rod is provided with threads with opposite rotation directions at both ends, the movable parts can move in the direction of approaching each other. At this time, the transmission wheel can be driven by the synchronizer to move along the rotating shaft, so that the transmission wheel on one side of the threaded rod is pushed away by the tension of the speed change belt to move upward, and the transmission wheel on one side of the threaded rod overcomes the friction force of the speed change belt to move upward, so that the wheel diameter of the transmission wheel and the fixed wheel combination in front of the threaded rod changes from small to large, and the transmission wheel and the fixed wheel combination on one side of the threaded rod are pushed away by the tension of the speed change belt to move upward, and the transmission wheel and the fixed wheel combination on one side of the threaded rod are pushed away by the tension of the speed change belt to move upward, so that the transmission wheel and the fixed wheel combination on one side of the threaded rod change from small to large. The wheel diameter changes from large to small. Under the drive of the driving motor, the speed-changing belt transmission enables the rotating shaft on one side of the threaded rod to obtain a high speed, thereby realizing convenient speed adjustment. When the speed adjustment transmission is carried out, the transmission wheel drives the fixed ring to move toward the speed-changing belt, gradually causing the spring and the annular plate in the fixed groove to squeeze the speed-changing belt. Under the elastic force of the spring, the speed-changing belt can be buffered, effectively preventing the transmission wheel from directly squeezing the speed-changing belt and causing damage. The anti-skid pad increases the friction degree of the surface of the annular plate, effectively preventing the speed-changing belt from slipping. The rubber pad is soft in material, preventing the speed-changing belt from rubbing against the fixed wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0021] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the structure I in the middle;

[0022] Figure 5 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at BB in the middle.

[0023] In the figure:

[0024] 1. Main unit; 101. Threaded rod; 102. Driving motor; 103. Moving part; 104. Driving part; 1041. Shift fork; 1042. Synchronizer;

[0025] 2. Transmission unit; 201. Rotation shaft; 202. Fixed wheel; 203. Transmission wheel; 204. Rotation separation device;

[0026] 3. Buffer unit; 301. Fixing ring; 302. Spring; 303. Ring plate; 304. Anti-skid pad;

[0027] 4. Connecting unit; 401. Rubber pad; 402. Speed-changing belt. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods. Example

[0029] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, a continuously variable transmission mechanism of a tractor boat comprises a main unit 1, a transmission unit 2 arranged at the side of the main unit 1, a buffer unit 3 arranged inside the transmission unit 2, and a connection unit 4 arranged on the surface of the transmission unit 2;

[0030] like Figure 1 As shown, the main unit 1 includes a threaded rod 101 with two ends rotating in opposite directions, a moving member 103 installed on the side of the threaded rod 101, and a toggle member 104 arranged on the side of the moving member 103. When the threaded rod 101 rotates, the moving member 103 can move along the threaded rod 101;

[0031] like Figure 3 As shown, the transmission unit 2 includes a rotating shaft 201 arranged on the side of the threaded rod 101, a fixed wheel 203 installed on the side wall of the rotating shaft 201, and a transmission wheel 202 movably installed on the side surface of the rotating shaft 201. When the transmission wheel 202 moves on the rotating shaft 201, the distance between the transmission wheel 202 and the fixed wheel 203 can be changed.

[0032] like Figure 2 As shown, the shifting member 104 includes a shifting fork 1041 installed on the side wall of the moving member 103, and a synchronizer 1042 installed on the side wall of the shifting fork 1041 and sleeved on the side surface of the shifting member 104. When the moving member 103 moves, it can drive the shifting fork 1041 to move synchronously.

[0033] like Figure 1 As shown, the main unit 1 further includes a driving motor 102 installed at the input end of the threaded rod 101 . The setting of the driving motor 102 provides power for the rotation of the threaded rod 101 .

[0034] like Figure 3 As shown, the transmission unit 2 includes a rotation separation device 204 installed on the inner wall of the synchronizer 1042 and movably connected to the rotating shaft 201. When the synchronizer 1042 moves following the fork 1041, the rotation separation device 204 can move synchronously.

[0035] like Figure 4As shown, the buffer unit 3 includes a fixed ring 301 installed on the inner wall of the transmission wheel 202, a fixed groove opened on the side wall of the fixed ring 301, a spring 302 installed in the fixed groove, and an annular plate 303 installed at the end of the spring 302. The setting of the spring 302 can buffer the movement of the variable speed belt 402.

[0036] like Figure 4 As shown, the buffer unit 3 further includes an anti-skid pad 304 installed on the surface of the annular plate 303 . The provision of the anti-skid pad 304 increases the friction degree of the surface of the annular plate 303 .

[0037] When speed adjustment is required, when the driving motor 102 drives the threaded rod 101 to rotate, since the threaded rod 101 is provided with threads with opposite rotation directions at both ends, the movable member 103 can move in the direction of approaching each other. At this time, the synchronizer 1042 can drive the transmission wheel 202 to move along the rotating shaft 201, so that the transmission wheel 202 on one side of the threaded rod 101 is pushed upward by the tension of the speed change belt 402 at the same time, and the transmission wheel 202 on one side of the threaded rod 101 overcomes the friction force of the speed change belt 402 and moves upward, so that the wheel diameter of the combination of the transmission wheel 202 and the fixed wheel 203 in front of the threaded rod 101 changes from small to large, and the wheel diameter of the combination of the transmission wheel 202 and the fixed wheel 203 on one side of the threaded rod 101 changes from large to small. Under the drive of the driving motor 102, the rotating shaft 201 on one side of the threaded rod 101 obtains a high speed through the transmission of the speed change belt 402, thereby realizing convenient speed adjustment. Example

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 As shown, a continuously variable transmission mechanism of a tractor boat comprises a main unit 1, a transmission unit 2 arranged at the side of the main unit 1, a buffer unit 3 arranged inside the transmission unit 2, and a connection unit 4 arranged on the surface of the transmission unit 2;

[0039] like Figure 1 As shown, the main unit 1 includes a threaded rod 101 with two ends rotating in opposite directions, a moving member 103 installed on the side of the threaded rod 101, and a toggle member 104 arranged on the side of the moving member 103. When the threaded rod 101 rotates, the moving member 103 can move along the threaded rod 101;

[0040] like Figure 3As shown, the transmission unit 2 includes a rotating shaft 201 arranged on the side of the threaded rod 101, a fixed wheel 203 installed on the side wall of the rotating shaft 201, and a transmission wheel 202 movably installed on the side surface of the rotating shaft 201. When the transmission wheel 202 moves on the rotating shaft 201, the distance between the transmission wheel 202 and the fixed wheel 203 can be changed.

[0041] like Figure 2 As shown, the shifting member 104 includes a shifting fork 1041 installed on the side wall of the moving member 103, and a synchronizer 1042 installed on the side wall of the shifting fork 1041 and sleeved on the side surface of the shifting member 104. When the moving member 103 moves, it can drive the shifting fork 1041 to move synchronously.

[0042] like Figure 1 As shown, the main unit 1 further includes a driving motor 102 installed at the input end of the threaded rod 101 . The setting of the driving motor 102 provides power for the rotation of the threaded rod 101 .

[0043] like Figure 3 As shown, the transmission unit 2 includes a rotation separation device 204 installed on the inner wall of the synchronizer 1042 and movably connected to the rotating shaft 201. When the synchronizer 1042 moves following the fork 1041, the rotation separation device 204 can move synchronously.

[0044] like Figure 4 As shown, the buffer unit 3 includes a fixed ring 301 installed on the inner wall of the transmission wheel 202, a fixed groove opened on the side wall of the fixed ring 301, a spring 302 installed in the fixed groove, and an annular plate 303 installed at the end of the spring 302. The setting of the spring 302 can buffer the movement of the variable speed belt 402.

[0045] like Figure 4 As shown, the buffer unit 3 further includes an anti-skid pad 304 installed on the surface of the annular plate 303 . The provision of the anti-skid pad 304 increases the friction degree of the surface of the annular plate 303 .

[0046] like Figure 5 As shown, the connection unit 4 includes a rubber pad 401 installed on the inner wall of the fixed wheel 203, and a speed change belt 402 movably arranged between the two rotating shafts 201. The rubber pad 401 is made of soft material and can reduce the friction between the speed change belt 402 and the fixed wheel 203.

[0047] When the speed is changed and adjusted, the transmission wheel 202 drives the fixed ring 301 to move toward the speed belt 402, and gradually the spring 302 and the annular plate 303 in the fixed groove squeeze the speed belt 402. Under the elastic force of the spring 302, the speed belt 402 can be buffered, effectively preventing the transmission wheel 202 from directly squeezing the speed belt 402 and causing damage. The anti-skid pad 304 increases the friction on the surface of the annular plate 303, effectively preventing the speed belt 402 from slipping. The rubber pad 401 is made of soft material to prevent the speed belt 402 from rubbing against the fixed wheel 203.

[0048] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A continuously variable transmission mechanism for a tiller boat, comprising a main unit (1), characterized in that: It also comprises a transmission unit (2) arranged on the side of the main body unit (1), a buffer unit (3) arranged inside the transmission unit (2), and a connection unit (4) arranged on the surface of the transmission unit (2); The main body unit (1) comprises a threaded rod (101) with two ends rotating in opposite directions, a moving member (103) mounted on the side surface of the threaded rod (101), and a toggle member (104) arranged on the side of the moving member (103); The transmission unit (2) comprises a rotating shaft (201) arranged on the side of the threaded rod (101), a fixed wheel (203) mounted on the side wall of the rotating shaft (201), and a transmission wheel (202) movably mounted on the peripheral side of the rotating shaft (201).

2. The continuously variable transmission mechanism of a tiller boat according to claim 1, characterized in that: The shifting member (104) comprises a shifting fork (1041) mounted on the side wall of the moving member (103), and a synchronizer (1042) mounted on the side wall of the shifting fork (1041) and sleeved on the peripheral side of the shifting member (104).

3. The continuously variable transmission mechanism of a tiller boat according to claim 2, characterized in that: The main body unit (1) also includes a driving motor (102) mounted on the input end of the threaded rod (101).

4. The continuously variable transmission mechanism of a tiller boat according to claim 3, characterized in that: The transmission unit (2) comprises a rotation separation device (204) mounted on the inner wall of the synchronizer (1042) and movably connected to the rotating shaft (201).

5. The continuously variable transmission mechanism of a tiller boat according to claim 1, characterized in that: The buffer unit (3) comprises a fixing ring (301) mounted on the inner side wall of the transmission wheel (202), a fixing groove provided on the side wall of the fixing ring (301), a spring (302) mounted in the fixing groove, and an annular plate (303) mounted on the end of the spring (302).

6. The continuously variable transmission mechanism of a tiller boat according to claim 5, characterized in that: The buffer unit (3) further comprises an anti-slip pad (304) mounted on the surface of the annular plate (303).

7. The continuously variable transmission mechanism of a tiller boat according to claim 2, characterized in that: The connection unit (4) comprises a rubber pad (401) mounted on the inner side wall of the fixed wheel (203), and a speed-changing belt (402) movably arranged between the two rotating shafts (201).

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