Mechanical foot accelerator device and tractor

Abstract

The utility model relates to a mechanical foot accelerator device and a tractor, the mechanical foot accelerator device comprises a rocker arm, a rotating shaft fixedly connected to the rocker arm and a pedal mechanism synchronously rotating with the rotating shaft, the foot accelerator device further comprises a support and a reset piece, the support is provided with at least two end portions, and the reset piece is arranged on the support. At least two ends of the reset piece are rotatably connected to the rotating shaft, the reset piece is arranged on the rotating shaft in a sleeving mode, and two ends of the reset piece are fixedly connected to the pedal mechanism and the support respectively. The structure strength of the foot accelerator can be relatively improved, and the problem of low control precision caused by easy deformation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a mechanical foot throttle device and a tractor. Background Art

[0002] The power output of the tractor during operation is determined by the size of the engine throttle. There are two main methods for controlling the size of the engine throttle: electronic signal control, which is usually called an electronic throttle; and mechanical manual control or foot control. As a traditional mechanical foot throttle device, its foot throttle shaft is supported at a single point by a cantilever, which has weak structural strength and is easy to deform during operation, resulting in low control accuracy over time. Utility Model Content

[0003] The utility model provides a mechanical foot throttle device and a tractor, which can relatively improve the structural strength of the foot throttle and improve the problem of easy deformation and low control accuracy.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] On the one hand, the utility model provides a mechanical foot throttle device, including a rocker arm, a rotating shaft fixedly connected to the rocker arm, and a pedal mechanism that rotates synchronously with the rotating shaft. The foot throttle device also includes a bracket and a reset member. The bracket has at least two ends, and at least two ends are rotatably connected to the rotating shaft. The reset member is sleeved on the rotating shaft, and the two ends are respectively fixedly connected to the pedal mechanism and the bracket.

[0006] The beneficial effects of the utility model are as follows: during installation, one end of the rocker arm away from the rotating shaft is connected to other structures, and the bracket is fixedly installed on the machine body; the bracket forms multiple supporting points for the rotating shaft, which greatly increases the strength of the bracket and will not cause displacement and deformation due to force, thereby changing the prior art in which the foot throttle rotating shaft adopts a cantilever for single-point support, which will have the problem of weak structural strength and easy deformation during operation, resulting in low control accuracy over time.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the bracket includes a base plate and at least two ear plates which are spaced apart and fixedly connected to the base plate, wherein at least two of the ear plates are rotatably connected to the rotating shaft at the same time.

[0009] The beneficial effect of adopting the above-mentioned further scheme is that at least two ear plates connected to the rotating shaft are rotated at the same time to form multiple support points for the rotating shaft, which greatly increases the strength of the bracket and will not cause displacement and deformation due to force. It changes the existing technology in which the foot throttle rotating shaft adopts a cantilever for single-point support, which has the problem of weak structural strength and easy deformation during operation, resulting in low control accuracy over time.

[0010] Furthermore, the ear plate rotatably connected to the rotating shaft is fixedly connected to a rotating member, and the rotating member is rotatably connected to the rotating shaft.

[0011] The beneficial effect of adopting the above further scheme is: the rotating part provides a rotation support point for the rotating shaft, forming a rotation transition structure between the rotating shaft and the ear plate, avoiding direct contact between the rotating shaft and the ear plate, which can greatly reduce friction resistance and increase service life. No gap will be generated due to long-term rotation of the rotating shaft, thereby ensuring the accuracy of use.

[0012] Furthermore, the rotating shaft extends out of the corresponding ear plate and is sleeved with a gasket, and the rotating shaft is clamped with a retaining spring that is tightly pressed against the gasket.

[0013] The beneficial effect of adopting the above further solution is that after the shaft is installed, the washer and the retaining spring are used to limit the shaft to ensure that the shaft will not move in the axial direction.

[0014] Furthermore, a sleeve sleeved on the rotating shaft is abutted against the inner side of the reset member.

[0015] The beneficial effect of adopting the above further solution is that the reset member is sleeved on the sleeve, which can provide support for the reset member when it rotates.

[0016] Furthermore, the pedal mechanism includes a limit plate connected to the rotating shaft and rotating synchronously with the rotating shaft, a connecting rod with one end fixedly connected to the limit plate, and a pedal installed at the other end of the connecting rod. The elastic force of the reset member can drive the limit plate to rotate until one end abuts the bracket and the other end has a gap with the bracket, or the pedal drives the limit plate to rotate in the opposite direction through the connecting rod until one end is separated from the bracket and the other end abuts the bracket and compresses the reset member.

[0017] The beneficial effect of adopting the above further scheme is: when working, the pedal is stepped on, and the transmission through the connecting rod and the limit plate drives the rotating shaft to rotate in the stepping direction, so that the rocker arm rotates; when the limit position is reached, the limit plate contacts the bracket, thereby limiting the further rotation of the rotating shaft; when the pedal is released, due to the presence of the reset member, the pedal will automatically return to its original position until one end of the limit plate abuts against the bracket, limiting the pedal's falling position, thereby ensuring that the pedal returns to its initial position.

[0018] Furthermore, the limiting plate is provided with an elastic pin, and the elastic pin is also inserted into the rotating shaft.

[0019] The beneficial effect of adopting the above further solution is: the elastic pin is used to form a limit between the limit plate and the rotating shaft, so that the rotation of the rotating shaft is driven by the rotation of the limit plate.

[0020] Furthermore, a lower limit is formed at the other end of the limit plate to cooperate with the bracket.

[0021] The beneficial effect of adopting the above further solution is that when the pedal reaches the limit position, the lower limit position contacts the bracket, thereby limiting further rotation of the rotating shaft.

[0022] Furthermore, one end of the limit plate is fixedly connected to an upper limit that cooperates with the bracket.

[0023] The beneficial effect of adopting the above further solution is: the upper limit is used to limit the falling position of the pedal, thereby ensuring that the pedal returns to the initial position.

[0024] On the other hand, the utility model provides a tractor, comprising the mechanical foot throttle device.

[0025] The beneficial effect of adopting the above-mentioned further scheme is: when working, when stepping on the pedal, the elastic pin fixes the rotating shaft and the limit plate together, thereby driving the rotating shaft to rotate in the stepping direction; when stepping on the limit position, the lower limit will contact the bracket, thereby limiting the further rotation of the rotating shaft; when releasing the pedal, due to the presence of the reset part, the pedal will automatically return to its original position, and due to the presence of the upper limit, the pedal's return position will be limited, thereby ensuring that the pedal returns to its initial position, and the upper limit made of rubber material can play a buffering and shock-absorbing role, greatly improving the operating comfort.

[0026] By adopting the above technical solution, the utility model has at least one of the following technical effects:

[0027] 1. By setting the bracket, the foot throttle of the utility model has the characteristics of high structural strength, non-deformability, high control accuracy, wear resistance, and long service life;

[0028] 2. The bracket adopts an integrated structure, which greatly increases the strength of the bracket and will not cause displacement and deformation due to force. It also has a compact structure and will not take up too much working space.

[0029] 3. The rotating parts greatly reduce friction resistance and increase service life. There will be no gap due to long-term rotation of the shaft, ensuring the accuracy of use;

[0030] 4. The other end of the rocker arm is set in the form of a ring and mounted on the rotating shaft. When welding, weld a circle around the lower circular hole of the rocker arm to increase its reliability;

[0031] 5. The limit plate can limit the foot throttle stroke through its own structure, and the upper limit can play a shock-absorbing role to prevent impact when the pedal is suddenly released, avoid damage to the foot throttle structure, and extend the service life; and the torsion spring mounting hole has a conical structure, which can guide the installation of the torsion spring and facilitate installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an axonometric drawing of the utility model;

[0033] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0034] Figure 3 This is the first partial explosion structure diagram of the utility model;

[0035] Figure 4 This is a second partial explosion structure diagram of the utility model;

[0036] Figure 5 It is a left view of the limiting plate of the utility model.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 1. Rocker arm;

[0039] 2. Rotating shaft;

[0040] 3. Bracket; 31. Bottom plate; 32. Ear plate; 33. Rotating member; 34. Gasket; 35. Circlip;

[0041] 4. Limit plate; 41. Lower limit; 42. Upper limit; 43. Rotating shaft circular hole; 44. Mounting hole; 45. Slot hole; 46. Fixing hole;

[0042] 5. Connecting rod;

[0043] 6. Pedal;

[0044] 7. Elastic pin;

[0045] 8. Reset piece; 81. Sleeve. DETAILED DESCRIPTION

[0046] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0047] On the one hand, the utility model provides a mechanical foot throttle device, as described in detail below.

[0048] Example 1

[0049] like Figures 1 to 4A mechanical foot throttle device includes a rocker arm 1, a rotating shaft 2 fixedly connected to the rocker arm 1, and a pedal mechanism that rotates synchronously with the rotating shaft 2. The foot throttle device also includes a bracket 3 and a reset member 8. The bracket 3 has at least two ends, and at least two ends are rotatably connected to the rotating shaft 2. The reset member 8 is sleeved on the rotating shaft 2, and the two ends are respectively fixedly connected to the pedal mechanism and the bracket 3.

[0050] The beneficial effects of this embodiment are: during installation, one end of the rocker arm 1 away from the rotating shaft is connected to other structures, and the bracket 3 is fixedly installed on the body; the bracket 3 forms multiple supporting points for the rotating shaft 2, which greatly increases the strength of the bracket and will not cause displacement and deformation due to force, thereby changing the prior art in which the foot throttle rotating shaft adopts a cantilever for single-point support, which will have the problem of weak structural strength and easy deformation during operation, resulting in low control accuracy over time.

[0051] Specifically, the other end of the rocker arm 1 away from the rotating shaft can be connected to the throttle cable, so that the throttle cable can be driven to operate through the rotation of the rocker arm 1.

[0052] The rocker arm 1 is a regular sheet metal structure, with a circular through hole at the top and bottom. The through hole at the top can be connected to other mechanisms (such as throttle cable) to directly or indirectly control the throttle opening of the engine. A plug hole is provided at one end of the rocker arm 1, so that after one end of the rotating shaft 2 is inserted, it can be fixedly connected to the rotating shaft 2 by welding to ensure that the two will not fall off due to frequent operation. When welding, a circle is welded around the plug hole of the rocker arm 1 to increase its reliability.

[0053] As a specific solution of the above embodiment, the reset member 8 may be a spring, and both ends of the spring are fixedly connected to the pedal mechanism and the bracket 3 respectively.

[0054] As one of the specific solutions, the pedal mechanism is connected to the middle end of the rotating shaft 2. The bracket 3 forms two left and right ends located on the same straight line to achieve rotational connection with the rotating shaft 2, one end is rotationally connected to the rotating shaft 2 located between the rocker arm 1 and the pedal mechanism, and the other end is rotationally connected to the other end of the rotating shaft 2 away from the rocker arm 1.

[0055] Example 2

[0056] like Figure 1 and Figure 2 On the basis of Embodiment 1, the bracket 3 includes a bottom plate 31 and at least two ear plates 32 spaced apart and fixedly connected to the bottom plate 31, wherein at least two ear plates 32 are simultaneously rotatably connected to the rotating shaft 2. In this Embodiment 2, the ear plate 32 is the end of the bracket 3 described in the embodiment.

[0057] The beneficial effect of adopting the preferred scheme in the above embodiment is that at least two ear plates 32 connected to the rotating shaft 2 are rotated at the same time to form multiple support points for the rotating shaft 2, which greatly increases the strength of the bracket and does not cause displacement and deformation due to force. It changes the existing technology in which the foot throttle rotating shaft adopts a cantilever for single-point support, which has the problem of weak structural strength and easy deformation during operation, resulting in low control accuracy over time.

[0058] As one of the specific solutions, the ear plate 32 is shown as two pieces, and is fixedly connected to the two ends of the bottom plate 31 respectively (shown as the left and right ends in the figure).

[0059] Specifically, fixing holes are provided at the other two ends of the bottom plate 31 (the upper end and the lower end are shown in the figure) to achieve fixed connection with the machine body through bolts, thereby achieving fixed installation of the bracket 3.

[0060] As other solutions, the number of the ear plates 32 at the same end of the bottom plate 31 can be one, two, three, etc., and only one is shown at one end in the figure. A through hole is also provided on the ear plate 32 to allow the shaft 2 to pass through. When at least two ear plates 32 are provided at the same end of the bottom plate 31, multiple support points can be formed at the same end.

[0061] The bracket 3 is the basis of the entire device, and all other parts are installed on the bracket 3. The bracket 3 is made of an integrally formed bent sheet metal part. The bottom plate 31 is connected to the body through fixing holes with bolts. The integrally formed structure greatly increases the strength of the bracket 3, and will not cause displacement and deformation due to force. The structure is compact and will not take up too much working space.

[0062] Example 3

[0063] like Figures 1 to 4 On the basis of embodiments 1 and 2, the ear plate 32 rotatably connected to the rotating shaft 2 is fixedly connected to the rotating member 33, and the rotating member 33 is rotatably connected to the rotating shaft 2.

[0064] The beneficial effect of adopting the preferred scheme in the above embodiment is that the rotating member 33 provides a rotation support point for the rotating shaft 2, forming a rotation transition structure between the rotating shaft 2 and the ear plate 32, avoiding direct contact between the rotating shaft 2 and the ear plate 32, which can greatly reduce friction resistance and increase service life. No gap will be generated due to the long-term rotation of the rotating shaft 2, thereby ensuring the accuracy of use.

[0065] As one of the parallel solutions of the above embodiment, the rotating member 33 can be a bushing, which is a stepped sleeve structure, and its small diameter end is adapted to and inserted into the through hole of the ear plate 32, and the two are interference fit to prevent the rotating member 33 from coming out. The inner surface of the bushing is smooth, which can greatly reduce the friction resistance to the rotating shaft 2 and increase the service life. No gap will be generated due to the long-term rotation of the rotating shaft 2, and the use accuracy is guaranteed.

[0066] As a second parallel solution of the above embodiment, the rotating member 33 can be a bearing, and the outer ring is fixedly connected to the through hole wall of the ear plate 32, and the inner ring is key-connected to the side of the rotating shaft 2.

[0067] Example 4

[0068] like Figures 1 to 4 On the basis of embodiments 1-3, the shaft 2 extends out of the corresponding ear plate 32 (shown as the rightmost ear plate in the figure), and is sleeved with a gasket 34, and the shaft 2 is clamped with a retaining spring 35 that is tightly pressed against the gasket 34.

[0069] The beneficial effect of adopting the preferred solution in the above embodiment is that after the rotating shaft 2 is installed, it is limited by the gasket 34 and the retaining spring 35 to ensure that the rotating shaft 2 will not move in the axial direction.

[0070] As a specific solution of the above embodiment, the rotating shaft 2 is a stepped shaft structure, and a retaining spring groove is provided at its other end (the right end is shown in the figure), and axial positioning is performed through the shaft shoulder. After the rotating shaft 2 is installed, it is limited by a gasket 34 and a retaining spring 35 to ensure that the rotating shaft 2 will not move in the axial direction.

[0071] The clamping ring 35 is adapted to and clamped in the clamping ring groove.

[0072] Example 5

[0073] like Figures 1 to 4 On the basis of embodiments 1-4, the inner side of the reset member 8 abuts against a sleeve 81 which is sleeved on the rotating shaft 2 .

[0074] The beneficial effect of adopting the preferred solution in the above embodiment is that the reset member 8 is sleeved on the sleeve 81, which can provide support for the reset member 8 when it rotates.

[0075] Example 6

[0076] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 On the basis of Examples 1-5, the pedal mechanism includes a limit plate 4 connected to the middle end of the rotating shaft 2 and rotating synchronously with the rotating shaft 2, a connecting rod 5 fixedly connected to the limit plate 4 at one end, and a pedal 6 installed at the other end of the connecting rod 5. The elastic force of the reset member 8 can drive the limit plate 4 to rotate until one end (shown as the upper end in the figure) abuts the bracket 3, and the other end (shown as the lower end in the figure) has a gap with the bracket 3, or the pedal 6 drives the limit plate 4 to rotate in the opposite direction through the connecting rod 5 to one end (shown as the upper end in the figure) separated from the bracket 3, and the other end (shown as the lower end in the figure) abuts against the bracket 3 and compresses the reset member 8.

[0077] The beneficial effect of adopting the preferred scheme in the above embodiment is that when working, the pedal 6 is stepped on, and the transmission through the connecting rod 5 and the limit plate 4 drives the rotating shaft 2 to rotate in the stepping direction, so that the rocker arm 1 rotates; when the limit position is stepped on, the limit plate 4 contacts with the bracket 3, thereby limiting the further rotation of the rotating shaft 2; when the pedal 6 is released, due to the presence of the reset member 8, the pedal 6 will automatically return to its original position until the upper end of the limit plate 4 abuts against the bracket 3, limiting the falling position of the pedal 6, thereby ensuring that the pedal 6 returns to its initial position.

[0078] The pedal 6 is made of non-metal material, and has a certain curvature on the surface to improve the ergonomic comfort, and has slots on the surface to prevent slipping. The connecting rod 5 is an irregular metal bent round steel structure, and the other end can be fixedly connected to the pedal 6 by bolts.

[0079] On the basis of the above embodiment, a shaft hole 43 is formed on the limit plate 4 to allow the shaft 2 to pass through. A mounting hole 44 is also formed on the limit plate 4 to communicate with the shaft hole 43. A slot 45 is formed at the lower end of the limit plate 4 to allow one end of the connecting rod 5 to pass through and achieve fixed connection, which can be fixedly connected by welding.

[0080] Fixing holes 46 are also provided on both sides of the limit plate 4 for one end of the reset member 8 to pass through; and the fixing hole 46 is a conical circular hole structure, which has a conical structure, which can guide the installation of the reset member 8 (torsion spring) and facilitate installation. When installing the reset member 8 (torsion spring), it is only necessary to move the straight section of the torsion spring to the conical mouth, and the straight section of the torsion spring can automatically slide into the inside of the conical hole.

[0081] The other end of the reset member 8 (torsion spring) can be welded to the bottom plate 31 and / or the ear plate 32 , or the other end of the torsion spring can be a straight section and pressed against the angle between the bottom plate 31 and the ear plate 32 .

[0082] Example 7

[0083] like Figure 2 and Figure 3 On the basis of embodiments 1-6, the limiting plate 4 is provided with an elastic pin 7, and the elastic pin 7 is also provided in the rotating shaft 2.

[0084] The beneficial effect of adopting the preferred solution in the above embodiment is that the elastic pin 7 is used to form a limit between the limit plate 4 and the rotating shaft 2, so that the rotation of the limit plate 4 drives the rotating shaft 2 to rotate.

[0085] As a specific solution of the above embodiment, one end of the elastic pin 7 is inserted into the mounting hole 44 , and a circular hole connected to the mounting hole 44 is opened on the rotating shaft 2 to allow the elastic pin 7 to be continuously inserted.

[0086] Example 8

[0087] like Figure 4 and Figure 5 On the basis of embodiments 1-7, the other end of the limit plate 4 (shown as the lower end in the figure) is formed with a lower limit 41 that cooperates with the bracket 3.

[0088] The beneficial effect of adopting the preferred solution in the above embodiment is that when the pedal 6 is stepped on to the limit position, the lower limit position 41 contacts the bracket 3, thereby limiting the further rotation of the rotating shaft 2.

[0089] Example 9

[0090] like Figure 1 and Figure 2 On the basis of embodiments 1-8, one end of the limit plate 4 is fixedly connected to an upper limit 42 that cooperates with the bracket 3.

[0091] The beneficial effect of adopting the preferred solution in the above embodiment is that the upper limit position 42 is used to limit the falling position of the pedal 6, thereby ensuring that the pedal 6 returns to the initial position.

[0092] Based on the above embodiment, the upper limit 42 can be made of rubber and fixed to the upper end of the limit plate 4 by vulcanization. The initial position of the foot throttle can be limited, and the rubber material can play a shock-absorbing role to prevent impact when the pedal is suddenly released, avoid damage to the foot throttle structure, and extend the service life.

[0093] On the other hand, the utility model provides a tractor, as described in detail below.

[0094] Example 10

[0095] like Figures 1 to 5 , based on Example 1-9, a tractor includes a mechanical foot throttle device as described in Example 1-9.

[0096] The beneficial effect of adopting the preferred scheme in the above embodiment is that when working, the pedal 6 is stepped on, and since the elastic pin 7 fixes the rotating shaft 2 and the limit plate 4 together, it will drive the rotating shaft 2 to rotate in the stepping direction; when the limit position is stepped on, the lower limit 41 contacts the bracket 3, thereby limiting the further rotation of the rotating shaft 2; when the pedal 6 is released, due to the presence of the reset member 8, the pedal 6 will automatically return to its original position, and due to the presence of the upper limit 42, the falling position of the pedal 6 will be limited, so that the pedal 6 can be guaranteed to return to the initial position, and the upper limit 42 made of rubber material can play a buffering and shock-absorbing role, greatly improving the operating comfort.

[0097] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0098] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0099] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A mechanical foot throttle device, comprising a rocker arm (1), a rotating shaft (2) fixedly connected to the rocker arm (1), and a pedal mechanism that rotates synchronously with the rotating shaft (2), characterized in that: The foot throttle device further comprises a bracket (3) and a reset member (8); the bracket (3) has at least two ends, and at least two ends are rotatably connected to the rotating shaft (2); the reset member (8) is sleeved on the rotating shaft (2), and two ends are respectively fixedly connected to the pedal mechanism and the bracket (3).

2. A mechanical foot throttle device according to claim 1, characterized in that: The bracket (3) comprises a base plate (31) and at least two ear plates (32) spaced apart and fixedly connected to the base plate (31), wherein at least two of the ear plates (32) are rotatably connected to the rotating shaft (2) at the same time.

3. A mechanical foot throttle device according to claim 2, characterized in that: The ear plate (32) rotatably connected to the rotating shaft (2) is fixedly connected to a rotating member (33), and the rotating member (33) is rotatably connected to the rotating shaft (2).

4. A mechanical foot throttle device according to claim 2, characterized in that: The rotating shaft (2) extends out of the corresponding ear plate (32) and is sleeved with a gasket (34), and the rotating shaft (2) is clamped with a retaining spring (35) pressed tightly against the gasket (34).

5. A mechanical foot throttle device according to claim 1, characterized in that: The inner side of the reset member (8) is in contact with a sleeve (81) sleeved on the rotating shaft (2).

6. A mechanical foot throttle device according to any one of claims 1 to 5, characterized in that: The pedal mechanism comprises a limit plate (4) connected to the rotating shaft (2) and rotating synchronously with the rotating shaft (2), a connecting rod (5) fixedly connected to the limit plate (4) at one end, and a pedal (6) mounted on the other end of the connecting rod (5); the elastic force of the reset member (8) can drive the limit plate (4) to rotate until one end abuts against the bracket (3) and the other end has a gap with the bracket (3); or the pedal (6) drives the limit plate (4) to rotate in the opposite direction through the connecting rod (5) until one end is separated from the bracket (3) and the other end abuts against the bracket (3) and compresses the reset member (8).

7. A mechanical foot throttle device according to claim 6, characterized in that: The limiting plate (4) is provided with an elastic pin (7), and the elastic pin (7) is also provided with an elastic pin in the rotating shaft (2).

8. A mechanical foot throttle device according to claim 6, characterized in that: The other end of the limit plate (4) is formed with a lower limit (41) that cooperates with the bracket (3).

9. A mechanical foot throttle device according to claim 6, characterized in that: One end of the limit plate (4) is fixedly connected to an upper limit (42) that cooperates with the bracket (3).

10. A tractor, characterized in that: It comprises a mechanical foot throttle device as described in any one of claims 1-9.

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