Tractor external lifter control mechanism and tractor with same

Abstract

The utility model relates to an external lifter control mechanism of a tractor and the tractor with the external lifter control mechanism. The tractor external lifter control mechanism comprises a traction control mechanism, a traction control support, a fixed support, a flexible shaft, a flexible shaft support, a flexible shaft guide support, an internal lifting control mechanism and a rocker arm control support, the traction control support is connected and assembled with the fixed support, and the fixed support is welded and fixed to the outer side of a rear coaming of a tractor cab. The flexible shaft is fixed to the outer side of a rear coaming of a tractor cab through the flexible shaft support, the flexible shaft guide support is fixed to the lower end of the cab base frame, the flexible shaft penetrates through the flexible shaft guide support, the built-in lifting control mechanism is installed on the cab base frame through the rocker arm control support, and one end of an inner core of the flexible shaft is connected with the traction control mechanism. And the other end of the inner core of the flexible shaft is connected with the built-in lifting control mechanism. The external lifter control mechanism has the advantages of being simple in structural design and beneficial to reliable and stable assembly of the whole external lifter control mechanism of the tractor.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery and equipment, in particular to an external hoist operating mechanism for a tractor and a tractor having the same. Background Art

[0002] As the core working component of a tractor, the hoist requires reliable control. Traditional hoist controls on cab-mounted tractors often have a single built-in hoist control, resulting in low efficiency when attaching and detaching implements.

[0003] Based on this, it is necessary to develop an external lifting control fixing mechanism. This mechanism can be installed on the left rear of the cab model to fix the external lifting control device, so that the hoist can be operated from outside the cab. It also ensures high overall strength and rigidity, and greatly reduces the resistance of the external lifting control during operation, making it easy to operate and not prone to deformation during operation. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tractor external lifter operating mechanism and a tractor having the same, which effectively overcomes the defects of the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A tractor external lifter operating mechanism includes a pulling operating mechanism, a pulling operating bracket, a fixed support, a flexible shaft, a flexible shaft bracket, a flexible shaft guide bracket, a built-in lifting operating mechanism and a rocker arm operating bracket. The pulling operating bracket is connected and assembled with the fixed support. The fixed support is welded and fixed to the outside of the rear panel of the tractor cab. The flexible shaft is fixed to the outside of the rear panel of the tractor cab through the flexible shaft bracket. The flexible shaft guide bracket is fixed to the lower end of the cab base frame. The flexible shaft passes through the flexible shaft guide bracket. The built-in lifting operating mechanism is installed on the cab base frame through the rocker arm operating bracket. One end of the inner core of the flexible shaft is connected to the pulling operating mechanism, and the other end of the inner core of the flexible shaft is connected to the built-in lifting operating mechanism.

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

[0008] Furthermore, the above-mentioned pulling and operating bracket includes a horizontal mounting plate, one end of the above-mentioned mounting plate is bent downward to form a connecting portion, both sides of the above-mentioned mounting plate are bent downward to form a structural reinforcing rib plate, the above-mentioned connecting portion is welded and fixed with a horizontal strip plate, one side of the above-mentioned strip plate is bent downward to form a fixing portion, the above-mentioned fixing portion is connected to the above-mentioned fixed support by bolts, and the above-mentioned pulling and operating mechanism is installed on the upper part of the above-mentioned mounting plate.

[0009] Furthermore, the above-mentioned fixed support includes a seat plate, both ends of which are bent toward the same side, and the end of one of the bent parts is provided with an inclined fitting portion adapted to the rear panel of the above-mentioned tractor cab, and the above-mentioned fitting portion is welded and fixed to the outer side of the rear panel of the above-mentioned tractor cab, and the above-mentioned seat plate is fitted with the above-mentioned fixing portion and fixed by bolts passing through the two.

[0010] Furthermore, the flexible shaft bracket includes a C-shaped main frame and a flexible shaft penetration fixture. The two ends of the main frame are vertically welded and fixed to the outer side of the rear panel of the tractor cab. The flexible shaft penetration fixture is installed on the main frame by bolts, and the flexible shaft passes through the flexible shaft penetration fixture.

[0011] Furthermore, the flexible shaft fixing device includes an unclosed annular belt ring, and the two ends of the unclosed portion of the belt ring are respectively extended with overlapping extension parts, and the extension parts are connected and fixed to the main frame by bolts passing through them, and the belt ring is wrapped with a flexible protective part.

[0012] Furthermore, the protective member is a rubber sleeve.

[0013] Furthermore, the above-mentioned flexible shaft guide bracket includes a vertically arranged support frame plate, the upper end of the above-mentioned support frame plate is horizontally bent toward one side to form a first welding portion, the above-mentioned first welding portion is welded and fixed to the lower end of the above-mentioned cab base frame, and the above-mentioned support frame plate is provided with an "Ω"-shaped flexible shaft through-hole passing through one side edge thereof, and the above-mentioned flexible shaft passes through the above-mentioned flexible shaft through-hole.

[0014] Furthermore, the rocker arm operating bracket includes a horizontal mounting plate, and the adjacent two side edges of the mounting plate are respectively bent upward to have a second welding portion. The mounting plate extends upward into the cab base frame through the second welding portion and is welded and fixed to the cab base frame. The built-in lifting operating mechanism is respectively connected and fixed to the lower end of the mounting plate.

[0015] Furthermore, the above-mentioned built-in lifting operating mechanism includes a sleeve-shaped rotating hub, a built-in rotating shaft, an external active rocker arm and a built-in passive rocker arm. The above-mentioned built-in rotating shaft coaxially passes through the two ends of the above-mentioned rotating hub, and the two ends of the above-mentioned built-in rotating shaft are respectively connected to the two above-mentioned mounting pads one by one through bolts. The above-mentioned built-in passive rocker arm is connected to one end of the above-mentioned rotating hub and is movably connected to the other end of the inner core of the above-mentioned flexible shaft. The above-mentioned external active rocker arm is vertically connected to the other end of the above-mentioned rotating hub, and the middle part of the upper end of the above-mentioned rotating hub is connected to the built-in active rocker arm extending upward into the cab.

[0016] The beneficial effects of the utility model are: the structural design is simple, and it is beneficial to the reliable and stable assembly of the entire tractor external lifter operating mechanism.

[0017] A tractor is also provided, comprising an external hoist operating mechanism of the tractor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the tractor external lifter operating mechanism of the present utility model;

[0019] Figure 2 This is a structural diagram of the pulling control bracket in the tractor external lift control mechanism of the utility model;

[0020] Figure 3 This is a schematic structural diagram of a fixed support in the operating mechanism of an external hoist of a tractor according to the present invention;

[0021] Figure 4 This is a schematic structural diagram of the flexible shaft bracket in the external lifter operating mechanism of the tractor according to the present invention;

[0022] Figure 5 This is a schematic structural diagram of the flexible shaft guide bracket in the tractor external lifter operating mechanism of the present utility model;

[0023] Figure 6 This is a structural schematic diagram of the rocker arm operating bracket in the tractor external lifter operating mechanism of the utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Pulling control mechanism; 2. Pulling control bracket; 3. Fixed support; 4. Flexible shaft; 5. Flexible shaft bracket; 6. Flexible shaft guide bracket; 7. Built-in lifting control mechanism; 8. Rocker arm control bracket; 21. Mounting plate; 22. Strip plate; 31. Seat plate; 51. Main frame; 52. Flexible shaft fixing device; 61. Support frame plate; 71. Rotating hub; 72. Built-in rotating shaft; 73. External active rocker arm; 74. Built-in passive rocker arm; 75. Built-in active rocker arm; 81. Mounting pad; 82. Second welding part; 211. Connecting part; 212. Reinforcing rib plate; 221. Fixing part; 311. Fitting part; 521. Belt ring; 522. Extension part; 612. First welding part. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1

[0028] like Figure 1As shown, the tractor external lifter operating mechanism of this embodiment includes a pulling operating mechanism 1, a pulling operating bracket 2, a fixed support 3, a flexible shaft 4, a flexible shaft bracket 5, a flexible shaft guide bracket 6, a built-in lifting operating mechanism 7 and a rocker arm operating bracket 8. The above-mentioned pulling operating bracket 2 is connected and assembled with the above-mentioned fixed support 3, and the above-mentioned fixed support 3 is welded and fixed to the outside of the rear panel of the tractor cab. The above-mentioned flexible shaft 4 is fixed to the outside of the rear panel of the tractor cab (represented by A in the figure) through the flexible shaft bracket 5, and the above-mentioned flexible shaft guide bracket 6 is fixed to the lower end of the cab base frame (represented by B in the figure). The above-mentioned flexible shaft 4 passes through the above-mentioned flexible shaft guide bracket 6, and the above-mentioned built-in lifting operating mechanism 7 is installed on the above-mentioned cab base frame through the above-mentioned rocker arm operating bracket 8. One end of the inner core of the above-mentioned flexible shaft 4 is connected to the above-mentioned pulling operating mechanism 1, and the other end of the inner core of the above-mentioned flexible shaft 4 is connected to the above-mentioned built-in lifting operating mechanism 7.

[0029] In the tractor external hoist operating mechanism of this embodiment, the pulling operating mechanism 1 is firmly fixed on the outer side of the rear panel of the tractor cab by a pulling operating bracket 2. The fixation is relatively firm and convenient for operation outside the cab. The flexible shaft 4 is assembled through the flexible shaft bracket 5 and the arrangement is relatively regular. The flexible shaft 4 as a whole has a good pulling guide to avoid displacement of the flexible shaft 4 and can protect the flexible shaft 4 to prevent wear of the flexible shaft 4. The flexible shaft guide bracket 6 can prevent the flexible shaft from falling off during operation, which greatly improves the movement accuracy and reliability. The setting of the rocker arm operating bracket 8 can make the built-in lifting operating mechanism firmly assembled. On the whole, the structural design is simple and reasonable, which is conducive to the reliable and stable assembly of the entire tractor external hoist operating mechanism.

[0030] As a preferred embodiment, Figure 2 As shown, the pulling manipulation bracket 2 includes a horizontal mounting plate 21, one end of the mounting plate 21 is bent downward to form a connecting portion 211, both sides of the mounting plate 21 are bent downward to form a structural reinforcing rib 212, the connecting portion 211 is welded and fixed with a horizontal strip plate 22, one side of the strip plate 22 is bent downward to form a fixing portion 221, the fixing portion 221 is connected to the fixed support 3 by bolts, and the pulling manipulation mechanism 1 is installed on the upper part of the mounting plate 21.

[0031] In the above embodiment, the mounting plate 21 uses a large-area horizontal plate to facilitate the assembly of the pulling and operating bracket 2. At the same time, the design of the reinforcing rib 212 can improve the structural strength of the entire plate. The setting of the connecting portion 211 facilitates the assembly of the strip plate 22, and the design of the fixing portion 221 enables the entire pulling and operating bracket 2 to be firmly assembled with the fixed support 3. More specifically, the pulling and operating bracket 2 uses an integrated bent sheet metal part. The sheet metal is bent into a closed frame bracket by a bending machine, and the gaps in the frame bracket are then welded to obtain a high-strength fixed bracket. Compared with brackets formed by welding multiple sheets, integrated bent sheet metal parts have higher precision and do not require manual handling of the sheet metal or welding with welding tools during welding, which greatly improves the production efficiency of the product.

[0032] As a preferred embodiment, Figure 3 As shown, the above-mentioned fixed support 3 includes a seat plate 31, and the two ends of the above-mentioned seat plate 31 are bent toward the same side respectively. The end of one of the bent parts is provided with an inclined fitting portion 311 adapted to the rear panel of the above-mentioned tractor cab. The above-mentioned fitting portion 311 is welded and fixed to the outer side of the rear panel of the above-mentioned tractor cab. The above-mentioned seat plate 31 is fitted with the above-mentioned fixing portion 221 and is fixed by bolts passing through the two.

[0033] In the above embodiment, the fixed support 3 is an integrated bent sheet metal part, which is fixed to the rear panel of the tractor cab by welding. The design of the fitting portion 311 can increase the welding area and improve the welding strength. There are two M5 threaded through holes on the fitting portion 311 and the fixing portion 221 respectively. The seat plate 31 and the mounting plate 21 are both made of 6mm sheet material. Compared with the fixing method using 4.5mm thick welded nuts, the threaded holes can increase the thread insertion length and increase reliability; compared with the fixing method using assembled nuts, this method can reduce manual assembly time and improve assembly efficiency. More specifically, the fitting portion 311 is designed with an inclination angle to ensure that the fitting surface of the seat plate 31 and the fixing portion 221 is in a vertical state, improving assembly efficiency.

[0034] Of course, a nut can be welded on one side of the threaded through hole for threaded connection of the bolt. Welding the nut can reduce manual assembly time and improve assembly efficiency.

[0035] As a preferred embodiment, Figure 4 As shown, the flexible shaft bracket 5 includes a C-shaped main frame 51 and a flexible shaft penetrating fixture 52. The two ends of the main frame 51 are vertically welded and fixed to the outer side of the rear panel of the tractor cab. The flexible shaft penetrating fixture 52 is installed on the main frame 51 by bolts, and the flexible shaft 4 passes through the flexible shaft penetrating fixture 52.

[0036] In the above embodiment, the main frame 51 is made of an integrated bent sheet metal part, and the setting of the flexible shaft fixing device 52 facilitates the guidance and passage of the flexible shaft 4, which is conducive to the regular arrangement of the flexible shaft 4.

[0037] As a preferred embodiment, the above-mentioned flexible shaft fixing device 52 includes an unclosed annular belt ring 521, and the two ends of the unclosed part of the above-mentioned belt ring 521 are respectively extended with overlapping extension parts 522, and the above-mentioned extension parts 522 are connected and fixed to the above-mentioned main frame 51 by bolts passing through them, and the above-mentioned belt ring 521 is wrapped with a flexible protective part.

[0038] In the above embodiment, the structural design of the flexible shaft threading fixture 52 is relatively simple, which facilitates the threading of the flexible shaft 4. At the same time, the protective member is wrapped around the portion of the flexible shaft 4 passing through it, which not only prevents the flexible shaft 4 from moving at will during operation, ensuring the accuracy and reliability during operation, but also the flexible protective member protects the flexible shaft 4 to prevent wear on the flexible shaft 4.

[0039] More specifically, a screw hole can be set through the extension part 522, and a welding nut can be fixed on one side of the extension part 522 so that the bolt can pass through the screw hole and be threadedly connected with the nut. The welding nut can reduce manual assembly time and improve assembly efficiency.

[0040] In this embodiment, the protective member is a rubber sleeve.

[0041] As a preferred embodiment, Figure 5 As shown, the flexible shaft guide bracket 6 includes a vertically arranged support frame plate 61, the upper end of the support frame plate 61 is horizontally bent toward one side to form a first welding portion 612, the first welding portion 612 is welded and fixed to the lower end of the cab base frame, and the support frame plate 61 is provided with an "Ω"-shaped flexible shaft through-hole (indicated by c in the figure) passing through one side edge thereof, and the flexible shaft 4 passes through the flexible shaft through-hole.

[0042] In the above embodiment, the flexible shaft guide bracket 6 adopts an integrated bent sheet metal part, and then the flanges are welded to form a frame structure to improve the strength. The "Ω"-shaped flexible shaft perforation is set, compared with the ordinary "U"-shaped opening, which can prevent the flexible shaft 4 from falling off during operation, thereby greatly improving the movement accuracy and reliability.

[0043] As a preferred embodiment, Figure 6 As shown, the rocker arm operating bracket 8 includes a horizontal mounting plate 81, and the adjacent two side edges of the mounting plate 81 are respectively bent upward to have a second welding portion 82. The mounting plate 81 extends upward into the cab base frame through the second welding portion 82 and is welded and fixed to the cab base frame. The built-in lifting operating mechanism 7 is respectively connected and fixed to the lower end of the mounting plate 81.

[0044] In the above embodiment, the rocker arm control bracket 8 adopts an integrated bent sheet metal part and is fixed to the cab base frame by welding. This structure is similar to the flexible shaft guide bracket 6 and is bent into a frame-shaped structure to improve strength.

[0045] In this embodiment, the internal lifting control mechanism 7 comprises a sleeve-shaped rotating hub 71, an internal rotating shaft 72, an external active rocker arm 73, and an internal passive rocker arm 74. The internal rotating shaft 72 coaxially passes through both ends of the rotating hub 71. Each end of the internal rotating shaft 72 is connected to the two mounting pads 81 via bolts. The internal passive rocker arm 74 is connected to one end of the rotating hub 71 and movably connected to the other end of the inner core of the flexible shaft 4. The external active rocker arm 73 is vertically connected to the other end of the rotating hub 71. The middle portion of the upper end of the rotating hub 71 is connected to an internal active rocker arm 75 that extends upward into the cab. The upper portions of both ends of the internal rotating shaft 72 are flat surfaces. The mounting pads 81 of the two rocker control brackets 8 are respectively attached to the flat surfaces and secured by bolts extending through the mounting pads 81 and the flat surfaces. Of course, threaded holes are vertically provided through the flat surfaces at both ends of the internal rotating shaft 72 to allow for threaded connection with the bolts.

[0046] It should be noted that: in this embodiment, the pulling operation mechanism 1 includes a flat shell, in which a rack is provided in a fixed direction (straight line), and a gear meshing with the rack is rotatably installed on one side of the rack. A knob is provided on the outside of the shell and is coaxially assembled with the gear through a short shaft. One end of the inner core of the soft shaft 4 enters the shell and is connected to one end of the rack. When the knob rotates, it drives the gear to rotate, and the gear drives the rack to move in a straight line, thereby pulling the inner core of the soft shaft 4 to move.

[0047] Example 2

[0048] The tractor of this embodiment includes the tractor external lifter operating mechanism of embodiment 1.

[0049] 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 to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0052] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present invention. 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A tractor external lift operating mechanism, characterized by: The invention comprises a pulling control mechanism (1), a pulling control bracket (2), a fixed support (3), a flexible shaft (4), a flexible shaft bracket (5), a flexible shaft guide bracket (6), a built-in lifting control mechanism (7) and a rocker control bracket (8), wherein the pulling control bracket (2) is connected and assembled with the fixed support (3), the fixed support (3) is welded and fixed to the outer side of the rear panel of the tractor cab, the flexible shaft (4) is fixed to the outer side of the rear panel of the tractor cab through the flexible shaft bracket (5), the flexible shaft guide bracket (6) is fixed to the lower end of the cab base frame, the flexible shaft (4) passes through the flexible shaft guide bracket (6), the built-in lifting control mechanism (7) is installed on the cab base frame through the rocker control bracket (8), one end of the inner core of the flexible shaft (4) is connected to the pulling control mechanism (1), and the other end of the inner core of the flexible shaft (4) is connected to the built-in lifting control mechanism (7).

2. The tractor external lifter operating mechanism according to claim 1, characterized in that: The pulling and operating bracket (2) includes a horizontal mounting plate (21), one end of the mounting plate (21) is bent downward to form a connecting portion (211), both sides of the mounting plate (21) are bent downward to form a structural reinforcing rib plate (212), a horizontal strip plate (22) is welded and fixed to the connecting portion (211), one side of the strip plate (22) is bent downward to form a fixing portion (221), and the fixing portion (221) is connected to the fixed support (3) by bolts, and the pulling and operating mechanism (1) is installed on the upper part of the mounting plate (21).

3. The tractor external lifter operating mechanism according to claim 2, characterized in that: The fixed support (3) includes a seat plate (31), both ends of the seat plate (31) are bent toward the same side, and an end portion of one of the bent portions is provided with an inclined fitting portion (311) adapted to the rear panel of the tractor cab. The fitting portion (311) is welded and fixed to the outer side of the rear panel of the tractor cab. The seat plate (31) fits the fixing portion (221) and is fixed by bolts passing through the two.

4. The tractor external lifter operating mechanism according to claim 1, characterized in that: The flexible shaft bracket (5) comprises a C-shaped main frame (51) and a flexible shaft penetration fixer (52), the two ends of the main frame (51) are vertically welded and fixed to the outer side of the rear panel of the tractor cab, the flexible shaft penetration fixer (52) is mounted on the main frame (51) by bolts, and the flexible shaft (4) passes through the flexible shaft penetration fixer (52).

5. The tractor external lifter operating mechanism according to claim 4, characterized in that: The flexible shaft fixing device (52) includes an unclosed annular belt ring (521), and the two ends of the unclosed portion of the belt ring (521) are respectively extended with mutually overlapping extension parts (522), and the extension parts (522) are connected and fixed to the main frame (51) by bolts passing through them, and the belt ring (521) is wrapped with a flexible protective part.

6. The tractor external lifter operating mechanism according to claim 5, characterized in that: The protective piece is a rubber sleeve.

7. The tractor external lifter operating mechanism according to claim 1, characterized in that: The flexible shaft guide bracket (6) comprises a vertically arranged support frame plate (61), the upper end of the support frame plate (61) being horizontally bent toward one side to form a first welding portion (612), the first welding portion (612) being welded and fixed to the lower end of the cab base frame, the support frame plate (61) being provided with an "Ω"-shaped flexible shaft through-hole penetrating through one side edge thereof, and the flexible shaft (4) passing through the flexible shaft through-hole.

8. The tractor external lifter operating mechanism according to claim 1, characterized in that: The rocker arm operating bracket (8) includes a horizontal mounting pad (81), and the adjacent two side edges of the mounting pad (81) are respectively bent upward to form a second welding portion (82). The mounting pad (81) extends upward into the cab base frame through the second welding portion (82) and is welded and fixed to the cab base frame. The built-in lifting operating mechanism (7) is respectively connected and fixed to the lower end of the mounting pad (81).

9. The tractor external lifter operating mechanism according to claim 8, characterized in that: The built-in lifting operating mechanism (7) includes a sleeve-shaped rotating hub (71), a built-in rotating shaft (72), an external active rocker arm (73) and a built-in passive rocker arm (74), wherein the built-in rotating shaft (72) coaxially passes through the two ends of the rotating hub (71), and the two ends of the built-in rotating shaft (72) are respectively connected to the two mounting pads (81) by bolts one by one, and the built-in passive rocker arm (74) is connected to one end of the rotating hub (71) and movably connected to the other end of the inner core of the flexible shaft (4), and the external active rocker arm (73) is vertically connected to the other end of the rotating hub (71), and the middle part of the upper end of the rotating hub (71) is connected to the built-in active rocker arm (75) extending upward into the cab.

10. A tractor, characterized in that: The invention comprises the tractor external lifter operating mechanism according to any one of claims 1 to 9.

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