Transmission device for power reversing of tractor

Abstract

The invention relates to the technical field of transmission devices, in particular to a tractor power reversing transmission device which comprises a first shell, a driving shaft and a mounting cover, and a second shell is mounted on one side of the first shell through bolts. According to the power transmission device, the multiple sets of arc-shaped guide blocks are matched with the multiple sets of arc-shaped friction blocks, the friction blocks are guided to move through the arc-shaped grooves between every two adjacent sets of guide blocks, when the friction blocks make contact with and are clamped with the guide blocks, the driving friction plates and the driven friction plates can be effectively connected in a clamped mode, and therefore power transmission is achieved; through the arc-shaped guide blocks, when the driving friction plates rotate, pressure in the axis direction can be applied to the driven friction plates, so that the clamping effect between the driven friction plates and the driving friction plates is improved, and then the situation that the driving friction plates and the driven friction plates slip is avoided; therefore, the transmission device can effectively transmit power.

Description

Technical Field

[0001] The invention relates to the technical field of transmission devices, in particular to a transmission device for tractor power reversing. Background Art

[0002] A tractor is a traction mechanical device widely used in agricultural planting, tillage and transportation. During the driving process of the tractor, a power reversing transmission device is required to adjust the power output direction of the tractor, thereby adjusting the driving direction of the tractor, thereby improving the operating efficiency of the tractor and reducing the workload of the driver.

[0003] The prior art also has the following defects during use:

[0004] When the tractor power reversing transmission device in the prior art transmits and reverses power, the transmission device adopts the method of friction plates contacting each other to connect the transmission shafts, thereby realizing power transmission. Traditional friction plates are generally flat materials with a certain friction force. The friction between the two planes makes the two adjacent friction plates rotate synchronously, thereby realizing power transmission. The power transmission efficiency of friction force is affected by the friction force of the friction surface. When the friction force on the friction plate surface decreases, it is easy to cause slippage inside the transmission device, making it difficult to effectively transmit power. In addition, when the non-contact friction plate rotates during use, the traditional friction plate is prone to ineffective wear due to insufficient lubrication, thereby greatly reducing the service life of the friction plate and the durability of the transmission device.

[0005] In view of this, we propose a tractor power reversing transmission device to solve the existing problems. Summary of the invention

[0006] The object of the present invention is to provide a transmission device for tractor power reversing to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a transmission device for tractor power reversing, comprising a first housing, a drive shaft and a mounting cover, a second housing being mounted on one side of the first housing by bolts, two guide pipes being fixedly mounted on the inner wall of the second housing, and mounting holes being provided at the central positions of the first housing and the second housing;

[0008] A driving shaft is installed inside the first housing via a bearing;

[0009] A transmission gear block is arranged on the outer side of one end of the driving shaft extending out of the first housing, a second driven shaft is clamped and installed on the other end of the driving shaft, a third driven shaft is movably installed on the outer side of the second driven shaft, and the first driven shaft is movably installed on the outer side of the third driven shaft;

[0010] A mounting cover is fixedly installed on the outer side of the driving shaft, a second side plate is movably installed on one side of the mounting cover, a plurality of spring rods are fixedly installed on one side of the second side plate, and a first side plate is fixedly installed on the side of the spring rod away from the second side plate, a plurality of connecting rings are sleeved on the outer side of the spring rod, and active friction plates are fixedly installed on the inner sides of the connecting rings, a plurality of guide ports are opened inside the active friction plates, and the guide ports are provided with an inclination angle of twenty degrees, a plurality of groups of guide blocks are provided on both sides of the active friction plates, and each group of guide blocks is arranged in an arc shape, a first driving disk and a second driving disk are clamped and installed between the first side plate and the second side plate, a partition plate is clamped and installed between the first driving disk and the second driving disk, a plurality of groups of driven friction plates are fixedly installed on the inner sides of the first driving disk and the second driving disk, and friction blocks are provided on both sides of the driven friction plates, the friction blocks are cylindrical, and the diameter of the friction blocks is equal to the distance between two adjacent guide blocks.

[0011] Preferably, the first driving disk is fixedly connected to the third driven shaft, and the first driving disk is snap-connected to the second side plate.

[0012] Preferably, the second driving disk is fixedly connected to the first driven shaft, and the second driving disk is snap-connected to the first side plate.

[0013] Preferably, a spline is provided on the outer side of one end of the second driven shaft, and the second driven shaft is engaged and connected with the inner wall of the driving shaft via the spline.

[0014] Preferably, of the two flow guide pipes installed on the inner wall of the second shell, one extends into the gap between the installation cover and the second side plate, and the other extends into the gap between the second shell and the first side plate.

[0015] Preferably, a connecting hole is formed on a side of the second housing close to the first driven shaft, and the connecting hole is connected to the two guide pipes through a control valve.

[0016] Preferably, a clamping groove is provided on the outer side of one end of the third driven shaft away from the first driving disk, and the clamping groove is a U-shaped arc surface.

[0017] Preferably, the cavity between the first side plate and the second side plate is filled with lubricating oil, two sealing rings are fixedly installed at the gap between the second side plate and the mounting cover, and two sealing rings are also fixedly installed at the gap between the first side plate and the second shell.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention adopts a plurality of groups of arc-shaped guide blocks to cooperate with a plurality of groups of arc-shaped friction blocks, and guides the friction blocks to move through the arc-shaped grooves between two adjacent groups of guide blocks, so that when the friction blocks contact and engage with the guide blocks, the active friction plates and the passive friction plates can be effectively engaged, thereby realizing power transmission, and the arc-shaped guide blocks can apply pressure toward the axial direction to the passive friction plates when the active friction plates rotate, so that the engagement effect between the passive friction plates and the active friction plates is improved, thereby avoiding the slippage of the active friction plates and the passive friction plates, so as to ensure that the transmission device can effectively transmit power.

[0020] 2. The present invention uses a plurality of guide ports opened inside the active friction plate to enable the active friction plate to promote the circulation of lubricating oil between the first side plate and the second side plate when the active friction plate rotates at high speed. Furthermore, when power reversing is performed, when the active friction plate and the passive friction plate on one side are separated and no power transmission is performed, the lubricating oil can be promoted to enter the gap between the active friction plate and the passive friction plate, thereby improving the lubricating effect of the lubricating oil on the active friction plate and the passive friction plate, avoiding contact between the active friction plate and the passive friction plate when no contact is required, thereby causing unnecessary wear, thereby extending the service life of the active friction plate and the passive friction plate, and improving the overall durability of the transmission device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of a first partial three-dimensional structure of the present invention;

[0023] Figure 3 It is a schematic diagram of a second partial three-dimensional structure of the present invention;

[0024] Figure 4 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the front external structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the active friction plate and the passive friction plate of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the active friction plate and the passive friction plate of the present invention;

[0028] Figure 8 for Figure 7 Schematic diagram of the local enlarged structure at point A in the middle.

[0029] In the figure: 1, first housing; 101, second housing; 2, driving shaft; 3, first driven shaft; 4, second driven shaft; 5, third driven shaft; 6, mounting cover; 601, first side plate; 602, spring rod; 603, second side plate; 604, active friction plate; 6041, guide port; 6042, guide block; 605, driven friction plate; 6051, friction block; 606, partition; 607, first driving disk; 608, second driving disk. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] like Figure 1 - Figure 8 As shown, a tractor power reversing transmission device proposed by the present invention comprises a first housing 1, a driving shaft 2 and a mounting cover 6, a second housing 101 is mounted on one side of the first housing 1 by bolts, two guide pipes are fixedly mounted on the inner wall of the second housing 101, mounting holes are provided at the central positions of the first housing 1 and the second housing 101, the first housing 1 and the second housing 101 can be connected by bolts, so as to provide protection for the internal components and form a closed space, so as to inject lubricating oil between the first housing 1 and the second housing 101, lubricate the internal components and reduce the wear inside the device, the guide pipe can guide the oil so that the oil flows out from the gap between the mounting cover 6 and the second side plate 603 and the gap between the second housing 101 and the first side plate 601, thereby pushing the first side plate 601 or the second side plate 603 to move, so as to reduce the distance between the active friction plate 604 and the driven friction plate 605, so as to make the active friction plate 604 and the driven friction plate 605 contact to realize transmission;

[0032] A drive shaft 2 is installed inside the first housing 1 through a bearing, and the drive shaft 2 can be connected to a driving device, so that the driving force is transmitted through the drive shaft 2, driving the components inside the device to rotate, so that the drive shaft 2 is connected to the components inside the device, thereby transmitting the driving force;

[0033] A transmission gear block is arranged on the outer side of one end of the driving shaft 2 extending out of the first housing 1, and a second driven shaft 4 is mounted on the other end of the driving shaft 2 in a clamped manner, and a third driven shaft 5 is movably mounted on the outer side of the second driven shaft 4, and a first driven shaft 3 is movably mounted on the outer side of the third driven shaft 5. The transmission gear block can connect the driving shaft 2 with the first driven shaft 3, the second driven shaft 4 and the third driven shaft 5 respectively, thereby transmitting power, and adjusting the direction of power transmission through different driven shafts. The first driven shaft 3, the second driven shaft 4 and the third driven shaft 5 are sleeved together, The first driven shaft 3, the second driven shaft 4 and the third driven shaft 5 are independent of each other and are not connected. The first driven shaft 3, the second driven shaft 4 and the third driven shaft 5 are respectively connected to the driving shaft 2, so that when the driving shaft 2 drives the first driven shaft 3, the second driven shaft 4 and the third driven shaft 5 to rotate, the power can be transmitted, and the power transmitted by the driving shaft 2 is reversed according to the first driven shaft 3, the second driven shaft 4 and the third driven shaft 5, so that the direction, speed and torque of the power transmission can be adjusted to meet different usage requirements;

[0034] The outer side of the driving shaft 2 is fixedly installed with a mounting cover 6, and a second side plate 603 is movably installed on one side of the mounting cover 6. A plurality of spring rods 602 are fixedly installed on one side of the second side plate 603, and a first side plate 601 is fixedly installed on the side of the spring rod 602 away from the second side plate 603. A plurality of connecting rings are sleeved on the outer side of the spring rod 602, and an active friction plate 604 is fixedly installed on the inner side of the connecting ring. A plurality of guide ports 6041 are opened inside the active friction plate 604, and the guide ports 6041 are set with an inclination angle of 20 degrees. A plurality of groups of guide blocks 6042 are set on both sides of the active friction plate 604, and each group of guide blocks 6042 is arranged in an arc shape. A first driving disk 6 is clamped and installed between the first side plate 601 and the second side plate 603. 07 and the second driving disk 608, a partition plate 606 is installed between the first driving disk 607 and the second driving disk 608, a plurality of groups of driven friction plates 605 are fixedly installed on the inner sides of the first driving disk 607 and the second driving disk 608, and friction blocks 6051 are arranged on both sides of the driven friction plates 605, the friction blocks 6051 are cylindrical, and the diameter of the friction blocks 6051 is equal to the distance between two adjacent guide blocks 6042, the mounting cover 6 can be connected with the driving shaft 2, so as to be driven to rotate synchronously by the driving shaft 2, the second side plate 603 can be driven to rotate by the mounting cover 6 by contacting with the mounting cover 6, so as to drive the active friction plate 604 to rotate, and the second side plate 603 can be moved by oil. , thereby pushing the active friction plate 604 to move, so that the distance between the active friction plates 604 is reduced, and the active friction plate 604 is brought into contact with the driven friction plate 605 for power transmission. The spring rod 602 can install and limit the active friction plate 604, so that each active friction plate 604 maintains the same distance, and when the device does not need to transmit, it can push the active friction plate 604 to reset, thereby separating the active friction plate 604 from the driven friction plate 605. The first side plate 601 can be pushed by the oil sprayed from the guide pipe to move, thereby pushing the active friction plate 604 away from the second side plate 603 to move, thereby bringing the active friction plate 604 into contact with the driven friction plate 605 for power transmission, and the active friction plate 604 The friction plate 604 can contact with several groups of driven friction plates 605, and then transmit power through the contact between the active friction plate 604 and the driven friction plate 605, so that the driving shaft 2 drives the first driven shaft 3, the second driven shaft 4 or the third driven shaft 5 to rotate. The guide port 6041 can drive the oil around the active friction plate 604 to flow when the active friction plate 604 rotates, thereby promoting the lubrication effect of the components around the active friction plate 604, reducing the wear of the components around the active friction plate 604 during the transmission process, and improving the durability of the device. The guide block 6042 can cooperate with the friction block 6051. When the active friction plate 604 and the driven friction plate 605 are in contact, they are connected by a plurality of guide blocks 6042 and a plurality of friction blocks 6051.The clamping effect of the active friction plate 604 and the driven friction plate 605 is improved, so as to stably transmit the power and avoid slipping between the active friction plate 604 and the driven friction plate 605. The first driving plate 607 can be connected with the third driven shaft 5. When the driving shaft 2 transmits power, the driven friction plate 605 on the outer side of the first driving plate 607 contacts with the active friction plate 604, so that the driving shaft 2 drives the third driven shaft 5 to rotate. The second driving plate 608 can be connected with the first driven shaft 3. When the driven friction plate 605 on the outer side of the second driving plate 608 contacts with the active friction plate 604, the power transmitted by the driving shaft 2 drives the first driven shaft 3 to rotate. The partition plate 606 can block the first driving plate 60 7 and the second drive disk 608 are separated, so as to prevent the first drive disk 607 or the second drive disk 608 from affecting the transmission structure on the other side when transmitting power. The driven friction plate 605 can contact the active friction plate 604, so that the driving structure connected to the group of driven friction plates 605 is affected by the driving force applied by the driving shaft 2 to rotate, so as to adjust the transmission structure connected to the driving shaft 2 according to different usage requirements, and then transmit different driven shafts. The friction block 6051 can be engaged with the guide block 6042 to improve the connection stability of the active friction plate 604 and the driven friction plate 605, so as to prevent the active friction plate 604 and the driven friction plate 605 from slipping during the transmission process.

[0035] Furthermore, the first driving disk 607 is fixedly connected to the third driven shaft 5, and the first driving disk 607 is snap-connected to the second side plate 603. The first driving disk 607 can drive the third driven shaft 5 to rotate when rotating, thereby forming a group of transmission structures through the connection of the driving shaft 2, the first driving disk 607 and the third driven shaft 5, so that the components connecting the driving shaft 2 and the third driven shaft 5 are connected and rotated.

[0036] Furthermore, the second driving disk 608 is fixedly connected to the first driven shaft 3, and the second driving disk 608 is snap-connected to the first side plate 601. The second driving disk 608 can form a transmission structure with the driving shaft 2 and the first driven shaft 3, and then drive the first driven shaft 3 to rotate through the driving shaft 2, so as to transmit the components connected to the driving shaft 2 and the first driven shaft 3.

[0037] Furthermore, a spline is provided on the outer side of one end of the second driven shaft 4, and the second driven shaft 4 is engaged with the inner wall of the driving shaft 2 through the spline. The second driven shaft 4 can be connected to the driving shaft 2, and then directly connected to the second driven shaft 4 through the driving shaft 2, driving the second driven shaft 4 to rotate.

[0038] Furthermore, two guide pipes are installed on the inner wall of the second shell 101, one of which extends to the gap between the mounting cover 6 and the second side plate 603, and the other extends to the gap between the second shell 101 and the first side plate 601. The guide pipes can guide the flow of oil, and then guide the oil to the outside of the first side plate 601 and the second side plate 603 respectively, thereby pushing the first side plate 601 and the second side plate 603, and then making the active friction plate 604 contact with the driven friction plate 605, thereby transmitting power, so that the drive shaft 2 drives the first driven shaft 3, the second driven shaft 4 or the third driven shaft 5 to rotate according to usage requirements.

[0039] Furthermore, a connecting hole is opened on the side of the second shell 101 close to the first driven shaft 3, and the connecting hole is connected to two guide pipes through a control valve. The connecting hole is used to connect the guide pipes, and the oil enters the interior of the device through the guide pipes, so that according to the power transmission requirements of the device, the drive shaft 2 is connected to the first driven shaft 3, the second driven shaft 4 or the third driven shaft 5, thereby realizing power transmission.

[0040] Furthermore, a slot is provided on the outer side of one end of the third driven shaft 5 away from the first driving disk 607, and the slot is a U-shaped arc surface. The slot can facilitate the connection of the third driven shaft 5 with other transmission structures, thereby enabling the third driven shaft 5 to transmit the power applied to the driving shaft 2.

[0041] Furthermore, the cavity between the first side plate 601 and the second side plate 603 is filled with lubricating oil, two sealing rings are fixedly installed at the gap between the second side plate 603 and the mounting cover 6, and two sealing rings are also fixedly installed at the gap between the first side plate 601 and the second shell 101. The sealing rings can improve the sealing around the first side plate 601 and the second side plate 603, thereby preventing oil leakage.

[0042] Working principle: After the driving shaft 2 is connected to the driving end of the tractor, lubricating oil is pumped into the two guide pipes respectively, so that the lubricating oil pushes the first side plate 601 or the second side plate 603 to move. When the first side plate 601 is pushed, the active friction plate 604 close to the first side plate 601 is squeezed, and the gap between the active friction plates 604 is reduced. The active friction plate 604 contacts the driven friction plate 605 on the outer side of the second driving plate 608, so that the first side plate 601 drives the second driving plate 608 to rotate, and the second driving plate 608 drives the first driven shaft 3 to rotate;

[0043] When the first side plate 601 is pushed, the active friction plate 604 close to the second side plate 603 is squeezed, the gap between the active friction plates 604 is reduced, and the active friction plate 604 contacts the driven friction plate 605 outside the first driving plate 607, so that the second side plate 603 drives the first driving plate 607 to rotate, and the first driving plate 607 drives the third driven shaft 5 to rotate;

[0044] When the driving shaft 2 is directly connected to the second driven shaft 4, the driving shaft 2 directly drives the second driven shaft 4 to rotate, and transmits the power of the driving shaft 2. When the active friction plate 604 and the driven friction plate 605 approach each other, the guide block 6042 and the friction block 6051 approach each other until they are engaged with each other, so that the active friction plate 604 and the driven friction plate 605 are engaged and connected for transmission. At the same time, the arc-shaped guide block 6042 and the friction block 6051 are engaged with each other, so that the active friction plate 604 and the driven friction plate 605 generate pressure in the axial direction, thereby improving the connection stability of the active friction plate 604 and the driven friction plate 605.

[0045] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A tractor power reversing transmission device, comprising a first housing (1), a drive shaft (2) and a mounting cover (6), characterized in that: A second shell (101) is mounted on one side of the first shell (1) by means of bolts, two flow guide pipes are fixedly mounted on the inner wall of the second shell (101), and mounting holes are provided at the central positions of the first shell (1) and the second shell (101); A drive shaft (2) is mounted inside the first housing (1) via a bearing; A transmission gear block is arranged on the outer side of one end of the driving shaft (2) extending out of the first housing (1); a second driven shaft (4) is mounted on the other end of the driving shaft (2); a third driven shaft (5) is movably mounted on the outer side of the second driven shaft (4); and the first driven shaft (3) is movably mounted on the outer side of the third driven shaft (5); The outer side of the driving shaft (2) is fixedly mounted with a mounting cover (6), a second side plate (603) is movably mounted on one side of the mounting cover (6), a plurality of spring rods (602) are fixedly mounted on one side of the second side plate (603), and a first side plate (601) is fixedly mounted on the side of the spring rods (602) away from the second side plate (603), a plurality of connecting rings are sleeved on the outer side of the spring rods (602), an active friction plate (604) is fixedly mounted on the inner side of each of the connecting rings, a plurality of guide ports (6041) are provided inside the active friction plate (604), and the guide ports (6041) are provided with an inclination angle of 20 degrees, and a plurality of groups of guide ports (6041) are provided on both sides of the active friction plate (604). The guide blocks (6042) are arranged in an arc shape, a first driving disk (607) and a second driving disk (608) are clamped and installed between the first side plate (601) and the second side plate (603), a partition plate (606) is clamped and installed between the first driving disk (607) and the second driving disk (608), a plurality of groups of driven friction plates (605) are fixedly installed on the inner sides of the first driving disk (607) and the second driving disk (608), friction blocks (6051) are arranged on both sides of the driven friction plates (605), and the friction blocks (6051) are cylindrical, and the diameter of the friction blocks (6051) is equal to the distance between two adjacent guide blocks (6042).

2. A tractor power reversing transmission device according to claim 1, characterized in that: The first driving disk (607) is fixedly connected to the third driven shaft (5), and the first driving disk (607) is snap-fittedly connected to the second side plate (603).

3. A tractor power reversing transmission device according to claim 1, characterized in that: The second driving disk (608) is fixedly connected to the first driven shaft (3), and the second driving disk (608) is snap-fittedly connected to the first side plate (601).

4. A tractor power reversing transmission device according to claim 1, characterized in that: A spline is provided on the outer side of one end of the second driven shaft (4), and the second driven shaft (4) is engaged and connected with the inner wall of the driving shaft (2) via the spline.

5. A tractor power reversing transmission device according to claim 1, characterized in that: Two flow guide pipes are installed on the inner wall of the second shell (101), one of which extends into the gap between the installation cover (6) and the second side plate (603), and the other extends into the gap between the second shell (101) and the first side plate (601).

6. A tractor power reversing transmission device according to claim 5, characterized in that: A connecting hole is provided on a side of the second housing (101) close to the first driven shaft (3), and the connecting hole is connected to two flow guide pipes via a control valve.

7. A tractor power reversing transmission device according to claim 1, characterized in that: A clamping groove is provided on the outer side of one end of the third driven shaft (5) away from the first driving disk (607), and the clamping groove is a U-shaped arc surface.

8. The tractor power reversing transmission device according to claim 1, characterized in that: The cavity between the first side plate (601) and the second side plate (603) is filled with lubricating oil, two sealing rings are fixedly installed at the gap between the second side plate (603) and the mounting cover (6), and two sealing rings are also fixedly installed at the gap between the first side plate (601) and the second shell (101).

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