Tractor seat

Abstract

The utility model relates to the technical field of tractors, in particular to a tractor seat. Comprising a backrest and a base; a top cover is fixedly mounted at the bottom of the base; a first long circular hole is formed in one end of the top cover; two parallel side plates perpendicular to the backrest are installed below the top cover, second long round holes and third long round holes are formed in the side plates, second connecting shafts are slidably installed on the second long round holes, first connecting rods are rotatably installed on the second connecting shafts, and first connecting shafts are rotatably installed at the ends, away from the second connecting shafts, of the first connecting rods; the first connecting shaft is in sliding fit with the first oblong hole; a third connecting shaft is slidably mounted on the third long circular hole, a third connecting rod is rotatably mounted on the third connecting shaft, and the end, away from the third connecting shaft, of the third connecting rod is hinged to the other end of the top cover. By means of the structure, the device can meet the requirements of different people for the angle of the base, and therefore the comfort and applicability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, and particularly relates to a tractor seat. Background Art

[0002] The tractor seat is one of the important structures of the tractor, and the comfort level of the tractor seat is the most intuitive feeling of the tractor operator for the tractor seat. The existing tractor seats are often composed of a base and a backrest, and the base is directly fixedly connected to the frame of the tractor, with a simple structure and low price.

[0003] However, due to the different body shapes and habits of each person, the requirements for the angle of the tractor seat base are also different. The seats in the prior art are directly fixedly installed on the frame of the tractor and cannot adjust the angle of its base, making it unable to meet the usage requirements of different drivers, with low comfort, reducing the usage experience of the driver, and poor applicability. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a tractor seat to solve the problem that the angle of the tractor base cannot be adjusted in the prior art, resulting in the inability to meet the usage requirements of different drivers.

[0005] The utility model is realized by using the following technical solutions: a tractor seat, comprising a backrest and a base; a top cover is fixedly installed at the bottom of the base, and a first long oval hole is opened at one end of the top cover; two side plates parallel to each other and perpendicular to the backrest are installed below the top cover, and second long oval holes and third long oval holes are respectively provided on the side plates. A second connecting shaft is slidably installed on the second long oval hole, a first connecting rod is rotatably installed on the second connecting shaft, a first connecting shaft is rotatably installed at one end of the first connecting rod away from the second connecting shaft, and the first connecting shaft is slidably matched with the first long oval hole; a third connecting shaft is slidably installed on the third long oval hole, a third connecting rod is rotatably installed on the third connecting shaft, and one end of the third connecting rod away from the third connecting shaft is hinged to the other end of the top cover; a driving mechanism is further included for respectively driving the second connecting shaft and the third connecting shaft to move left and right.

[0006] With the above structure, when it is necessary to adjust the height of the base near the backrest end, only by moving the third connecting shaft left and right can the height of the left base of the base be increased or decreased. When it is necessary to adjust the height of the right base, only by moving the second connecting shaft can the height of the right base be increased or decreased. The heights of the left and right bases can be adjusted independently, so as to meet the requirements of different people for the angle of the base, thereby improving the comfort and applicability of the device.

[0007] Furthermore, a bottom plate is fixedly installed at the bottom of the side plate. The driving mechanism includes a first motor fixedly installed on the bottom plate. The output shaft of the first motor is fixedly connected to a first lead screw. One end of the first lead screw away from the first motor is rotatably installed with a first support seat, and the first support seat is fixedly connected to the bottom plate. A first threaded hole is formed in the middle of the third connecting shaft, and the first threaded hole is in threaded cooperation with the first lead screw; a second motor is also fixedly installed on the bottom plate. The output end of the second motor is fixedly connected to a second lead screw. One end of the second lead screw away from the second motor is rotatably connected to a second support seat. A second threaded hole is provided on the second connecting shaft, and the second threaded hole is in threaded cooperation with the second lead screw. Through the arrangement of the first motor and the second motor that can rotate forward and backward, the device can better control the lifting or lowering of the base.

[0008] Furthermore, one end of the side plate is hinged with a second connecting rod, and the end of the second connecting rod away from the side plate is hinged to the middle of the first connecting rod; the other end of the side plate is hinged with a fourth connecting rod, and the fourth connecting rod is hinged to the middle of the third connecting rod. Through the arrangement of the second connecting rod and the fourth connecting rod, a supporting effect is exerted on the first connecting rod and the third connecting rod, thereby increasing the overall stability of the device and extending the service life of the device.

[0009] Furthermore, the second connecting rod is hinged to the side plate through a third rotating shaft, and the two second connecting rods are fixedly installed at both ends of the third rotating shaft; the fourth connecting rod is hinged to the side plate through a fourth rotating shaft, and the two fourth connecting rods are fixedly installed at both ends of the fourth rotating shaft. Through the arrangement of the third rotating shaft and the fourth rotating shaft, the connection stability of the device is further increased.

[0010] Furthermore, a shock absorption mechanism is also installed at the bottom of the bottom plate. Through the arrangement of the shock absorption mechanism, the shaking suffered by the tractor during operation is reduced, and the comfort of the device is further improved.

[0011] Furthermore, the shock absorption mechanism includes a mounting bracket fixedly installed on the tractor frame. A support plate is slidably installed on the mounting bracket, and the support plate is fixedly connected to the bottom plate. A spring is fixedly installed on the mounting bracket, and one end of the spring away from the mounting bracket is fixedly connected to the support plate. Through the arrangement of the support plate and the spring, the influence on the base when the tractor shakes up and down is reduced.

[0012] Furthermore, a first rotating shaft is fixedly installed at the bottom of the mounting bracket. The first rotating shaft is fixedly connected to a support rod. One end of the support rod away from the first rotating shaft is fixedly connected to a second rotating shaft, and the second rotating shaft is rotatably connected to the bottom of the support plate. Through the arrangement of the support rod, the installation of the support plate can be more stable.

[0013] Furthermore, a guide rail is provided on the mounting bracket. A slider is slidably mounted in the guide rail. The slider is fixedly connected to a connecting block, and the connecting block is fixedly connected to the support plate. Through the arrangement of the guide rail and the slider, the support plate in this device can only move up and down along the direction of the guide rail, and cannot move forward, backward, left or right.

[0014] Furthermore, the cross-section of the slider is in a "cross" shape, and the shape of the guide rail matches that of the slider. Through the "cross" shape arrangement of the slider and the guide rail, the slider is prevented from disengaging from the guide rail.

[0015] Furthermore, an avoidance groove is provided in the middle of the connecting block. Through the arrangement of the avoidance groove, when the support plate moves downward, the connecting block can avoid the connection part between the spring and the mounting bracket.

[0016] In summary, the beneficial effects of the present utility model are as follows:

[0017] 1. Through the arrangement of the top cover, the first connecting rod and the third connecting rod, the base in this device can adjust the heights on its left and right sides within a certain range, and can also increase or decrease the overall height of the base, thus meeting the needs of different people for the seat angle and height, and increasing the applicability of this device; compared with a base that cannot adjust the angle and height, the comfort of this device is higher.

[0018] 2. Through the arrangement of the vibration damping mechanism, this device can reduce the vibration generated due to poor road conditions during the daily working driving of the tractor, so that the base of this device can be kept as stable as possible, further improving the comfort of this device and making the operation experience of the operator better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the structure of the lifting mechanism of the present utility model;

[0021] Figure 3 is a schematic diagram of the internal structure of the lifting mechanism;

[0022] Figure 4 is the front view of the vibration damping mechanism of the present utility model;

[0023] Figure 5 is Figure 4 a cross-sectional view at the position of "A - A" in

[0024] In the figure: 1 - mounting bracket; 11 - connecting block; 12 - support plate; 13 - guide rail; 14 - spring; 15 - avoidance groove; 16 - first rotating shaft; 17 - support rod; 18 - second rotating shaft; 19 - slider; 2 - bottom plate; 21 - top cover; 22 - side plate; 23 - first oblong hole; 24 - first connecting rod; 25 - first connecting shaft; 26 - second connecting rod; 27 - third rotating shaft; 28 - second oblong hole; 29 - second connecting shaft; 30 - third connecting shaft; 31 - third oblong hole; 32 - third connecting rod; 33 - fourth connecting rod; 34 - fourth rotating shaft; 4 - first motor; 41 - first lead screw; 42 - first threaded hole; 43 - first support seat; 44 - second support seat; 45 - second threaded hole; 46 - second lead screw; 47 - second motor; 5 - backrest; 51 - base. Detailed implementation manners

[0025] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0026] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0027] The following is a description of the preferred embodiments of the present utility model in conjunction with the accompanying drawings.

[0028] As Figure 1 、 Figure 2 、 Figure 3As shown in the figure, the present utility model provides a tractor seat, which includes a seat body. The seat body includes a backrest 5 and a base 51, and a lifting mechanism for controlling the height adjustment of the left and right sides of the base 51 is installed at the bottom of the base 51. The lifting mechanism includes a top cover 21 fixedly installed at the bottom of the base 51, and a first long circular hole 23 is opened at one end of the top cover 21. Below the top cover 21, two side plates 22 parallel to each other and perpendicular to the backrest are installed. Second long circular holes 28 and third long circular holes 31 are provided on the side plates 22 respectively. A second connecting shaft 29 is slidably installed on the second long circular hole 28, a first connecting rod 24 is rotatably installed on the second connecting shaft 29, and a first connecting shaft 25 is rotatably installed at the end of the first connecting rod 24 away from the second connecting shaft 29. The first connecting shaft 25 is slidably matched with the first long circular hole 23. A third connecting shaft 30 is slidably installed on the third long circular hole 31, a third connecting rod 32 is rotatably installed on the third connecting shaft 30, and the end of the third connecting rod 32 away from the third connecting shaft 30 is hinged to the other end of the top cover 21. The tractor seat in this device further includes a driving mechanism for respectively driving the left and right movement of the second connecting shaft 29 and the third connecting shaft 30.

[0029] A bottom plate 2 is fixedly installed at the bottom of the side plate 22, and the side plate 22 is located on the front and rear sides of the bottom plate 2. The driving mechanism includes a first motor 4 fixedly installed on the bottom plate 2. The output shaft of the first motor 4 is fixedly connected with a first lead screw 41. The end of the first lead screw 41 away from the first motor 4 is rotatably installed with a first support seat 43, and the first support seat 43 is fixedly connected with the bottom plate 2. A first threaded hole 42 is opened in the middle of the third connecting shaft 30, and the first threaded hole 42 is threadedly matched with the first lead screw 41. A second motor 47 is also fixedly installed on the bottom plate 2. The output end of the second motor 47 is fixedly connected with a second lead screw 46. The end of the second lead screw 46 away from the second motor 47 is rotatably connected with a second support seat 44. A second threaded hole 45 is provided on the second connecting shaft 29, and the second threaded hole 45 is threadedly matched with the second lead screw 46.

[0030] Among them, the first motor 4 and the second motor 47 mentioned above are both motors capable of forward and reverse rotation. The first motor 4 and the second motor 47 are respectively located at the left and right ends of the bottom plate 2, and the first support seat 43 and the second support seat 44 are located in the middle of the bottom plate 2. The first motor 4 and the second motor 47 can both be controlled by a controller. Controlling the motor by the controller belongs to the prior art and will not be elaborated here. When the first motor 4 rotates forward, the third connecting shaft 30 moves to the right, and the left side of the base 51 drops downward. When the first motor 4 rotates in reverse, the third connecting shaft 30 moves to the left, and the left side of the base 51 rises upward. When the second motor 47 rotates forward, the second connecting shaft 29 moves to the left, and the right side of the base 51 drops downward. When the second motor 47 rotates in reverse, the second connecting shaft 29 moves to the right, and the right side of the base 51 rises upward.

[0031] As a further illustration of this embodiment, one end of the side plate 22 is hinged with a second connecting rod 26, and the end of the second connecting rod 26 away from the side plate 22 is hinged to the middle of the first connecting rod 24; the other end of the side plate 22 is hinged with a fourth connecting rod 33, and the fourth connecting rod 33 is hinged to the middle of the third connecting rod 32; specifically, the second connecting rod 26 is hinged to the side plate 22 through a third rotating shaft 27, and two second connecting rods 26 are fixedly installed at both ends of the third rotating shaft 27; the fourth connecting rod 33 is hinged to the side plate 22 through a fourth rotating shaft 34, and two fourth connecting rods 33 are fixedly installed at both ends of the fourth rotating shaft 34. Through the second connecting rod 26 and the fourth connecting rod 33, the corresponding first connecting rod 24 and third connecting rod 32 can be strengthened to support the top cover 21, making the device more stable. The settings of the third rotating shaft 27 and the fourth rotating shaft 34 enable the second connecting rods 26 or the fourth connecting rods 33 on the front and rear sides to rotate synchronously, so that the coordination of the corresponding connecting rods on the front and rear sides is better, further improving the stability of the device.

[0032] As Figure 1 , Figure 4 , Figure 5 shown, since the working environment of the tractor is often bumpy, in order to cope with the bumpy working environment, a shock absorption mechanism is installed at the bottom of the bottom plate 2.

[0033] Among them, the shock absorption mechanism includes a mounting bracket 1 fixedly installed on the tractor frame. A support plate 12 is slidably installed on the mounting bracket 1. The support plate 12 is fixedly connected to the bottom plate 2. A spring 14 is fixedly installed on the mounting bracket 1. One end of the spring 14 away from the mounting bracket 1 is fixedly connected to the support plate 12. Under the action of the spring 14, the support plate 12 is in a suspended state. When the tractor shakes up and down, under the action of multiple springs 14, the stability of the support plate 12 can be maintained as much as possible, so that the shock felt by the operator sitting on the seat is greatly reduced.

[0034] Since the suspended support plate 12 may be unstable, for example, when it is shaken back and forth or left and right, its main stress points are all concentrated at the connection position between the support plate 12 and the mounting bracket 1, making this place more likely to be damaged. In order to share part of the force and make the device more stable, a first rotating shaft 16 is fixedly installed at the bottom of the mounting bracket 1. The first rotating shaft 16 is fixedly connected to a support rod 17. One end of the support rod 17 away from the first rotating shaft 16 is fixedly connected to a second rotating shaft 18. The second rotating shaft 18 is rotatably connected to the bottom of the support plate 12.

[0035] In this device, the sliding fit between the mounting bracket 1 and the support plate 12 is mainly achieved by providing a guide rail 13 on the mounting bracket 1. A slider 19 is slidably installed in the guide rail 13. The cross-section of the slider 19 is in the shape of a cross, and the shape of the guide rail 13 matches that of the slider 19. The slider 19 is fixedly connected to a connecting block 11, and the connecting block 11 is fixedly connected to the support plate 12. An avoidance groove 15 is provided in the middle of the connecting block 11 to avoid the spring 14 when the connecting block 11 moves downward.

[0036] The working principle of this device is as follows: When the tractor operator sits on the base 51 of the tractor seat, the rotation of the first motor 4 and the second motor 47 is controlled by the controller. After adjusting the base 51 to a height and inclination angle that is most comfortable for oneself, the rotation of the first motor 4 and the second motor 47 can be stopped, and then the operation of the tractor can be started.

[0037] In summary, in the tractor seat provided by the present utility model, through the settings of the top cover 21, the first connecting rod 24, and the third connecting rod 32, the base 51 in this device can adjust the heights of its left and right sides within a certain range, and can also increase or decrease the overall height of the base 51, thereby meeting the needs of different people for the seat angle and height, and increasing the applicability of this device; compared with the base 51 that cannot adjust the angle and height, the comfort of this device is higher. Through the setting of the damping mechanism, this device can reduce the vibration generated due to poor road conditions during the daily working driving of the tractor, so that the base 51 of this device can remain as stable as possible, further improving the comfort of this device and making the operation experience of the operator better.

[0038] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.

Claims

1. A tractor seat, comprising a backrest (5) and a base (51); characterized in that: A top cover (21) is fixedly mounted on the bottom of the base (51), and a first oblong hole (23) is formed at one end of the top cover (21); two side panels (22) are mounted below the top cover (21) and are parallel to and perpendicular to the backrest; a second oblong hole (28) and a third oblong hole (31) are formed on the side panels (22); a second connecting shaft (29) is slidably mounted on the second oblong hole (28), and a first connecting rod (24) is rotatably mounted on the second connecting shaft (29), and the first connecting rod (24) is spaced apart from the second connecting shaft (29). A first connecting shaft (25) is rotatably mounted on one end of the connecting shaft (29), and the first connecting shaft (25) is slidably matched with the first oblong hole (23); a third connecting shaft (30) is slidably mounted on the third oblong hole (31), and a third connecting rod (32) is rotatably mounted on the third connecting shaft (30), and one end of the third connecting rod (32) away from the third connecting shaft (30) is hinged to the other end of the top cover (21); and a driving mechanism is also included for driving the second connecting shaft (29) and the third connecting shaft (30) to move left and right respectively.

2. The tractor seat according to claim 1, characterized in that: A bottom plate (2) is fixedly mounted on the bottom of the side plate (22); the driving mechanism comprises a first motor (4) fixedly mounted on the bottom plate (2); an output shaft of the first motor (4) is fixedly connected to a first screw rod (41); an end of the first screw rod (41) away from the first motor (4) is rotatably mounted to a first support seat (43); the first support seat (43) is fixedly connected to the bottom plate (2); a first threaded hole (42) is provided in the middle of the third connecting shaft (30); the first threaded hole (42) is threadedly engaged with the first screw rod (41); a second motor (47) is also fixedly mounted on the bottom plate (2); an output end of the second motor (47) is fixedly connected to a second screw rod (46); an end of the second screw rod (46) away from the second motor (47) is rotatably connected to a second support seat (44); a second threaded hole (45) is provided on the second connecting shaft (29); the second threaded hole (45) is threadedly engaged with the second screw rod (46).

3. The tractor seat according to claim 2, characterized in that: A second connecting rod (26) is hingedly connected to one end of the side plate (22), and an end of the second connecting rod (26) away from the side plate (22) is hingedly connected to the middle part of the first connecting rod (24); a fourth connecting rod (33) is hingedly connected to the other end of the side plate (22), and the fourth connecting rod (33) is hingedly connected to the middle part of the third connecting rod (32).

4. The tractor seat according to claim 3, characterized in that: The second connecting rod (26) is hinged to the side plate (22) via a third rotating shaft (27), and two of the second connecting rods (26) are fixedly mounted at both ends of the third rotating shaft (27); the fourth connecting rod (33) is hinged to the side plate (22) via a fourth rotating shaft (34), and two of the fourth connecting rods (33) are fixedly mounted at both ends of the fourth rotating shaft (34).

5. The tractor seat according to claim 2, characterized in that: A shock absorbing mechanism is also installed at the bottom of the base plate (2).

6. The tractor seat according to claim 5, characterized in that: The shock absorbing mechanism comprises a mounting frame (1) fixedly mounted on a tractor frame, a support plate (12) being slidably mounted on the mounting frame (1), the support plate (12) being fixedly connected to a bottom plate (2), a spring (14) being fixedly mounted on the mounting frame (1), and an end of the spring (14) away from the mounting frame (1) being fixedly connected to the support plate (12).

7. The tractor seat according to claim 6, characterized in that: A first rotating shaft (16) is fixedly mounted on the bottom of the mounting frame (1), the first rotating shaft (16) is fixedly connected to a support rod (17), one end of the support rod (17) away from the first rotating shaft (16) is fixedly connected to a second rotating shaft (18), and the second rotating shaft (18) is rotatably connected to the bottom of the support plate (12).

8. The tractor seat according to claim 6, characterized in that: A guide rail (13) is provided on the mounting frame (1), a slider (19) is slidably mounted in the guide rail (13), the slider (19) is fixedly connected to a connecting block (11), and the connecting block (11) is fixedly connected to the support plate (12).

9. The tractor seat according to claim 8, characterized in that: The cross section of the slider (19) is in the shape of a cross, and the shape of the guide rail (13) matches the slider (19).

10. The tractor seat according to claim 8, characterized in that: A avoidance groove (15) is provided in the middle of the connection block (11).

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