Agricultural machinery multi-stage composite adjusting type direction machine and agricultural machinery

Abstract

The utility model relates to a kind of multi-stage composite adjusting type direction machine of agricultural machinery and agricultural machinery, multi-stage composite adjusting type direction machine of agricultural machinery includes first inner tube, outer tube, second inner tube, height adjusting mechanism, first angle adjusting mechanism and guy, outer tube lower end is set on the upper end of first inner tube, the lower end of first inner tube is hinged with the upper end of second inner tube by first hinge shaft, the hoop of outer tube lower end is set outside first inner tube and is fixed, the opening side outer surface of hoop is fixed with two ear plates, two ear plates are connected with the height adjusting mechanism that is by rotating to hold tightly or loosen first inner tube;The side wall of first inner tube and second inner tube side wall are connected by first angle adjusting mechanism, one end of height adjusting mechanism is connected with the upper end of guy, and the lower end of guy is connected with the first locking structure on first angle adjusting mechanism, and first locking structure can be pulled or loosened, to realize the unlocking or locking of first angle adjusting mechanism.The utility model can realize the joint adjustment of height and angle.

Description

Technical Field

[0001] This utility model relates to the technical field of agricultural machinery, specifically to a multi-stage composite adjustable steering mechanism for agricultural machinery and agricultural machinery. Background Technology

[0002] In the field of agricultural machinery, multi-stage adjustable steering gears are core components ensuring driver comfort and safety. Traditional multi-stage adjustable steering gears typically employ three independent adjustment mechanisms to achieve front-to-back angle and vertical height adjustment. These three mechanisms are located in different positions and are adjusted and controlled separately, resulting in a complex structure, large space occupation, and negatively impacting the steering gear's appearance. As market demands for adjustable functions increase—for example, four-way adjustable steering gears require two adjustment handles, and six-way adjustable steering gears require three—the increased number of adjustment handles not only increases the difficulty of structural design but also negatively affects the user experience due to unsightly appearance and cumbersome operation (requiring step-by-step and frequent adjustments of different handles).

[0003] The core contradiction of existing multi-level adjustable steering mechanisms lies in the conflict between functional expansion and structural simplification. Traditional agricultural machinery steering mechanisms require an additional independent adjustment and locking mechanism for each level of adjustment, resulting in a linear increase in the number of handles and operating steps. This leads to numerous operations, frequent adjustments that are time-consuming and labor-intensive, and fails to meet the demands of modern agricultural machinery for efficient human-machine interaction. Furthermore, using multiple handles makes synchronous adjustment difficult, and step-by-step adjustment requires repeated calibration of adjustment angles and heights, reducing operational efficiency. Simultaneously, redundant structural design affects the appearance, as well as the overall ergonomics and market competitiveness of the vehicle. Utility Model Content

[0004] This utility model addresses one or more technical problems existing in the prior art by providing a multi-stage composite adjustable steering mechanism for agricultural machinery and agricultural machinery.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: This utility model provides a multi-stage composite adjustable steering mechanism for agricultural machinery, including a first inner tube, an outer tube, a second inner tube, a height adjustment mechanism, a first angle adjustment mechanism, and a pull cable. The lower end of the outer tube is sleeved on the upper end of the first inner tube. The lower end of the first inner tube and the upper end of the second inner tube are hinged through a first hinge shaft. A clamp is fixed to the lower end of the outer tube and sleeved on the outside of the first inner tube. Two ear plates are fixed on the outer surface of the opening side of the clamp. The two ear plates are connected to a height adjustment mechanism that can tighten or loosen the first inner tube by rotation. The side walls of the first inner tube and the second inner tube are connected through the first angle adjustment mechanism. One end of the height adjustment mechanism is connected to the upper end of the pull cable. The lower end of the pull cable is connected to a first locking structure on the first angle adjustment mechanism, and can pull or loosen the first locking structure to unlock or lock the first angle adjustment mechanism.

[0006] The beneficial effects of this utility model are as follows: This utility model provides a multi-stage composite adjustable steering mechanism for agricultural machinery. By setting up a height adjustment mechanism, a first angle adjustment mechanism, and a second angle adjustment structure, the height can be adjusted by loosening or loosening the clamp through the height adjustment mechanism. When adjusting the height, the pull cable can be pulled at the same time, which drives the first locking structure to unlock or lock the first angle adjustment mechanism. This allows for the combined adjustment of height and angle, enabling simultaneous adjustment in both front-to-back and up-to-down dimensions. Users can adjust the steering wheel to a suitable position according to their driving needs.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the height adjustment mechanism includes an adjustment rod, a first gear plate, and a second gear plate. The adjustment rod passes through and rotates on one ear plate. The first gear plate is fixed to the outer side of another ear plate. The second gear plate is fixed on the adjustment rod and arranged opposite to the first gear plate. One end of the adjustment rod is fixed with a pull plate for connecting the upper end of the pull line. The rotation of the adjustment rod allows the second gear plate to mesh or misalign with the first gear plate, enabling the two ear plates to move away from or closer to each other.

[0009] The beneficial effects of adopting the above-mentioned further solution are as follows: By setting an adjusting rod, a first gear plate, and a second gear plate, rotating the adjusting rod in the forward direction causes the second gear plate on the adjusting rod to disengage from the first gear plate. The two ear plates are no longer under force and move away from each other. The clamp does not tighten the first inner tube, and the height between the outer tube and the first inner tube can be adjusted. At the same time, the pull plate on the adjusting rod pulls the pull line to move, which drives the first angle adjustment mechanism to unlock and realize angle adjustment. Rotating the adjusting rod in the reverse direction causes the second gear plate on the adjusting rod to mesh with the first gear plate. One ear plate is forced to move closer to the other ear plate, the clamp tightens the second inner tube, and the outer tube and the first inner tube are locked. At the same time, the pull plate on the adjusting rod resets, the first angle adjustment mechanism is locked, and angle adjustment cannot be performed.

[0010] Furthermore, the two ear plates are respectively a first ear plate and a second ear plate. The adjusting rod is rotatably connected to the first ear plate, the first gear plate is fixed on the outer side of the second ear plate, a pull plate is fixed to one end of the adjusting rod extending out of the first ear plate, and a second gear plate is fixed to the outer side wall of the section of the adjusting rod extending out of the second ear plate.

[0011] Furthermore, a bearing is installed on the first ear plate, and the adjusting rod is fixedly connected to the inner ring of the bearing.

[0012] The beneficial effect of adopting the above-mentioned further solution is that by setting bearings, it is convenient to rotate the adjusting rod to achieve height and angle adjustment.

[0013] Furthermore, a clamping buffer gap is provided between the clamp and the outer tube, the clamping buffer gap extends along the circumference of the outer tube, and one end of the clamping buffer gap is connected to the opening between the two ear plates. A first spring is pressed between the two ear plates, and the first spring is sleeved on the adjusting rod.

[0014] The beneficial effect of adopting the above-mentioned further solution is that by setting a clamping buffer gap, the clamp can be slightly deformed during operation to achieve a clamping effect.

[0015] Furthermore, the first angle adjustment mechanism includes a first locking gas spring, the locking end of the first locking gas spring is hinged to the outer side of the lower end of the first inner tube through a second hinge shaft, and the main body structure end of the first locking gas spring is hinged to the outer side wall of the second inner tube through a third hinge shaft. The second hinge shaft and the third hinge shaft are both arranged parallel to the first hinge shaft. The first locking structure includes a first locking lever, the locking end of the first locking gas spring is provided with a first locking hole, the first locking lever is hinged in the first locking hole, one end of the first locking lever is connected to the lower end of the pull wire, and the other end of the first locking lever is arranged correspondingly to the first locking head of the first locking gas spring.

[0016] The beneficial effect of adopting the above-mentioned further solution is that by setting a first locking lever, the first locking lever can be used in conjunction with the first locking gas spring to realize the locking and unlocking of the first locking gas spring.

[0017] Furthermore, it also includes a second angle adjustment mechanism, a second locking structure, and a support rod. The lower end of the second inner tube is hinged to the support plate at the upper end of the support rod via a fourth hinge shaft. The two ends of the second angle adjustment mechanism are respectively hinged to the outer wall of the second inner tube and the upper end of the support rod via a fifth hinge shaft and a sixth hinge shaft. The fourth, fifth, and sixth hinge shafts are all arranged parallel to the first hinge shaft. A foot pedal is connected to the upper end of the support rod. The foot pedal is rotatably connected to the support plate at the upper end of the support rod via a pedal shaft. One end of the pedal shaft, which extends into the support plate, is connected to a pull rod. A limiting pin is fixed on the support plate to limit the pull rod. One end of the pull rod is connected to the pedal shaft, and the other end of the pull rod is connected to the second locking structure on the second angle adjustment mechanism via a second spring. The pull rod can pull or release the second locking structure to unlock or lock the second angle adjustment mechanism.

[0018] The beneficial effect of adopting the above-mentioned further solution is that by setting a second angle adjustment mechanism, in conjunction with a foot pedal, multi-level angle adjustment of the tubing column can be achieved.

[0019] Furthermore, the second angle adjustment mechanism includes a second locking gas spring, the main structure end of the second locking gas spring is hinged to the outer wall of the second inner tube through a fifth hinge axis, and the locking end of the second locking gas spring is hinged to the upper end of the support rod through a sixth hinge axis. The second locking end of the second locking gas spring has a second locking hole. The second locking structure includes a second locking lever. The middle part of the second locking lever is hinged in the second locking hole. One end of the second locking lever is connected to the upper end of the second spring. The other end of the second locking lever is arranged correspondingly to the second locking head of the second locking gas spring.

[0020] The beneficial effect of adopting the above-mentioned further solution is that by setting a second locking lever, it is convenient to cooperate with the second locking gas spring to realize the unlocking or locking of the second locking gas spring.

[0021] Furthermore, a first U-shaped connector is fixed to the lower end of the first inner tube, a second U-shaped connector and a third U-shaped connector are fixed to the upper and lower ends of the second inner tube respectively, and a fourth U-shaped connector is fixed to the outer wall of the second inner tube. The first U-shaped connector and the second U-shaped connector are hinged together by a first hinge axis, and the third U-shaped connector and the support plate are hinged together by a fourth hinge axis; the lower end of the first angle adjustment mechanism is hinged together with the fourth U-shaped connector by a third hinge axis, and the upper end of the second angle adjustment mechanism is hinged together with the fourth U-shaped connector by a fifth hinge axis. The third hinge axis is located diagonally above the fifth hinge axis and is arranged close to the second inner tube.

[0022] The beneficial effect of adopting the above-mentioned further solution is that by setting U-shaped connectors, it is convenient to hinge the various tubes together.

[0023] This utility model also provides an agricultural machine, including an agricultural machine body and a multi-stage composite adjustable steering mechanism as described above, wherein the multi-stage composite adjustable steering mechanism is installed in the cab of the agricultural machine body.

[0024] The beneficial effects of this utility model are: the agricultural machinery of this utility model can realize the linkage adjustment in two dimensions, front and rear, and in two dimensions, up and down, of the steering wheel. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the multi-stage composite adjustable steering mechanism for agricultural machinery of this utility model; Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle; Figure 3 for Figure 1Enlarged structural diagram of section B in the middle; Figure 4 This is a schematic diagram of the split structure of the multi-stage composite adjustable steering mechanism for agricultural machinery of this utility model; Figure 5 for Figure 4 Enlarged structural diagram of the middle section; Figure 6 This is a three-dimensional structural diagram of the second angle adjustment mechanism of this utility model; Figure 7 This is a schematic diagram of the structure of the handle and outer sheath of this utility model.

[0026] The attached diagram lists the components represented by each number as follows: 100. First inner tube; 101. Second inner tube; 102. Outer tube; 103. Clamp; 104. First hinge pin; 105. Second hinge pin; 106. Third hinge pin; 107. Fourth hinge pin; 108. Fifth hinge pin; 109. First ear plate; 110. Second ear plate; 111. Adjusting rod; 112. First gear plate; 113. Second gear plate; 114. Pull wire plate; 115. Threaded section; 116. Handle; 117. Nut; 118. First self-locking nut; 119. Second self-locking nut; 120. Bearing; 121. Pull wire; 122. First spring; 123. Clamping buffer gap; 124. First locking gas spring; 125. First locking lever; 126. First locking hole; 127. Second locking gas spring; 128. Support rod; 129. Support plate; 130. Pull rod; 131. Pedal shaft; 132. Foot pedal; 133. Second spring; 134. Second locking lever; 135. Limiting pin; 136. Second locking hole; 137. First U-shaped connector; 138. Second U-shaped connector; 139. Third U-shaped connector; 140. Fourth U-shaped connector; 141. Steering wheel; 142. Fifth U-shaped connector; 143. Bushing; 144. Sixth hinge pin; 145. Hand grip section; 146. Limiting pin; 147. Outer sheath. Detailed Implementation

[0027] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0028] Example 1 like Figures 1-6As shown in this embodiment, a multi-stage composite adjustable steering mechanism for agricultural machinery includes a first inner tube 100, an outer tube 102, a second inner tube 101, a height adjustment mechanism, a first angle adjustment mechanism, and a pull cable 121. The lower end of the outer tube 102 is sleeved on the upper end of the first inner tube 100. The lower end of the first inner tube 100 and the upper end of the second inner tube 101 are hinged together by a first hinge pin 104. A clamp 103 is fixed to the lower end of the outer tube 102 and sleeved on the outside of the first inner tube 100. Two ear plates are fixed to the outer surface of the opening side. The two ear plates are connected to a height adjustment mechanism that can tighten or loosen the first inner tube 100 by rotation. The side wall of the first inner tube 100 and the side wall of the second inner tube 101 are connected by a first angle adjustment mechanism. One end of the height adjustment mechanism is connected to the upper end of the pull wire 121, and the lower end of the pull wire 121 is connected to the first locking structure on the first angle adjustment mechanism. The first locking structure can be pulled or loosened to unlock or lock the first angle adjustment mechanism.

[0029] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in a specific embodiment, a clamping buffer gap 123 is provided between the clamp 103 and the outer tube 102. The clamping buffer gap 123 extends along the circumference of the outer tube 102, and one end of the clamping buffer gap 123 is connected to the opening between the two ear plates.

[0030] Preferred, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a first spring 122 is pressed between the two ear plates, and the first spring 122 is sleeved on the adjusting rod 111. By setting a clamping buffer gap, it is convenient for the clamp to deform slightly during operation to clamp.

[0031] Optional, such as Figure 1 and Figure 2 As shown, in order to ensure that the first inner tube 100 can only move along the axial direction of the outer tube 102 when adjusting the height, a vertically arranged guide hole can be opened on the clamp 103 and the outer tube 102. Then, a limiting post 135 is installed on the first inner tube 100. The limiting post 135 can extend out of the guide hole to ensure that the outer tube 102 can only move along the axial direction of the first inner tube 100.

[0032] Specifically, such as Figure 1 , Figure 2 and Figure 4As shown, in this embodiment, the lower end of the first inner tube 100 is fixed with a first U-shaped connector 137, the upper and lower ends of the second inner tube 101 are respectively fixed with a second U-shaped connector 138 and a third U-shaped connector 139, and a fourth U-shaped connector 140 is fixed on the outer wall of the second inner tube 101; the first U-shaped connector 137 and the second U-shaped connector 138 are hinged together by a first hinge pin 104, and the third U-shaped connector 139 is hinged together with the support plate 129 by a fourth hinge pin 107; the lower end of the first angle adjustment mechanism is hinged together with the fourth U-shaped connector 140 by a third hinge pin 106; the angle of the lower end of the second inner tube 101 can be adjusted by connecting the existing angle adjustment mechanism to the support rod.

[0033] In this embodiment, the upper end of the outer tube 102 can be used to install the steering wheel 141.

[0034] The height adjustment mechanism, the first angle adjustment mechanism, and the second angle adjustment structure in this embodiment can adopt existing structures, which can realize the linkage between the height adjustment mechanism and the first angle adjustment mechanism through the pull line after the height adjustment mechanism rotates.

[0035] This embodiment of an agricultural machinery multi-stage composite adjustable steering gear, by setting a height adjustment mechanism, a first angle adjustment mechanism and a second angle adjustment structure, allows for height adjustment by loosening or loosening the clamp through the height adjustment mechanism. When adjusting the height, a cable can be pulled simultaneously, which drives the first locking structure to unlock or lock the first angle adjustment mechanism, thus achieving joint adjustment of height and angle. This allows for simultaneous adjustment in both the front-rear and vertical dimensions, enabling the user to adjust the steering wheel to a suitable position according to their driving needs.

[0036] Example 2 Based on Embodiment 1, this embodiment provides a preferred solution for the height adjustment mechanism. For example... Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the height adjustment mechanism includes an adjustment rod 111, a first gear plate 112, and a second gear plate 113. The adjustment rod 111 passes through and rotates on one ear plate. The first gear plate 112 is fixed to the outer side of another ear plate. The second gear plate 113 is fixed on the adjustment rod 111 and arranged opposite to the first gear plate 112. One end of the adjustment rod 111 is fixed with a pull plate 114 for connecting the upper end of the pull cable 121. The rotation of the adjustment rod 111 allows the second gear plate 113 to be adapted to mesh with or misalign with the first gear plate 112, thereby moving the two ear plates closer or further apart. By setting an adjusting rod, a first gear plate, and a second gear plate, rotating the adjusting rod forward causes the second gear plate on the adjusting rod to disengage from the first gear plate. The two ear plates are no longer under force and move away from each other. The first spring 122 is stretched, and the clamp does not tighten the first inner tube. The height between the outer tube and the first inner tube can be adjusted. At the same time, the pull plate on the adjusting rod pulls the pull line to move, which unlocks the first angle adjustment mechanism and realizes angle adjustment. Rotating the adjusting rod in the opposite direction causes the second gear plate on the adjusting rod to mesh with the first gear plate. One ear plate is moved closer to the other ear plate by the force of the first spring. The clamp tightens the second inner tube, and the outer tube and the first inner tube are locked. At the same time, the pull plate on the adjusting rod resets, and the first angle adjustment mechanism is locked, so angle adjustment cannot be made.

[0037] Specifically, such as Figure 5 As shown, one end of the pull plate 114 in this embodiment is fixed with a protrusion, and the pull cable 121 can be connected to the protrusion.

[0038] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, specifically, the two ear plates are a first ear plate 109 and a second ear plate 110. The adjusting rod 111 is rotatably connected to the first ear plate 109. The first gear plate 112 is fixed to the outer side of the second ear plate 110. A pull wire plate 114 is fixed to one end of the adjusting rod 111 that extends out of the first ear plate 109. A second gear plate 113 is fixed to the outer side wall of the section of the adjusting rod 111 that extends out of the second ear plate 110.

[0039] Preferred, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a bearing 120 is mounted on the first ear plate 109, and the adjusting rod 111 is fixedly connected to the inner ring of the bearing 120. By providing the bearing, it is convenient to rotate the adjusting rod to achieve height and angle adjustment.

[0040] Specifically, such as Figure 2 and Figure 5As shown, the adjusting rod 111 has a threaded section 115, which can fix the pull plate 114 and the bearing 120 to the end of the threaded section 115 that extends out of the ear plate by means of a first self-locking nut 118, a second self-locking nut 119, and a nut 117. The second self-locking nut 119 and the nut 117 are double nuts to install the bearing 120. The other end of the adjusting rod 111 is coaxially fixed with a handheld section 145. The handheld section 145 has a polygonal structure to facilitate hand rotation of the adjusting rod 111. The free end of the handheld section 145 is fixed with a handle 116, which can be fixed to the handheld section 145 by bolts. The second gear 113 is fixed to the end of the adjusting rod 111 near the handheld section 145.

[0041] Example 3 Based on Embodiment 1 or Embodiment 2, this embodiment provides a preferred solution for the first angle adjustment mechanism. For example... Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first angle adjustment mechanism includes a first locking gas spring 124. The locking end of the first locking gas spring 124 is hinged to the outer side of the lower end of the first inner tube 100 via a second hinge pin 105. The main body structure end of the first locking gas spring 124 is hinged to the outer wall of the second inner tube 101 via a third hinge pin 106. Both the second hinge pin 105 and the third hinge pin 106 are arranged parallel to the first hinge pin 104. The first locking structure includes a first locking lever 125. The locking end of the first locking gas spring 124 has a first locking hole 126. The first locking lever 125 is hinged in the first locking hole 126. One end of the first locking lever 125 is connected to the lower end of the pull wire 121, and the other end of the first locking lever 125 is correspondingly arranged with the first locking head of the first locking gas spring 124. By setting the first locking lever, the locking and unlocking of the first locking gas spring can be achieved by cooperating with the first locking lever.

[0042] In this embodiment, the first locking gas spring 124 can adopt a commonly used existing structure, and the specific locking principle is the existing technology of locking gas springs.

[0043] In this embodiment, the first angle adjustment mechanism works by rotating the adjusting rod 111 in the forward direction, pulling the pull wire 121, which in turn pulls the first locking lever 125. This causes the first locking lever 125 to press the first locking head of the first locking gas spring 124, thus unlocking the first locking gas spring 124 and enabling it to extend and retract. This allows for the adjustment of the front and rear angles of the first inner tube 100 and the second inner tube 101.

[0044] Example 4 Based on any of the above embodiments, this embodiment also provides a preferred angle adjustment scheme. For example... Figure 1 , Figure 3 and Figure 6 As shown, the multi-stage composite adjustable steering mechanism for agricultural machinery in this embodiment also includes a second angle adjustment mechanism, a second locking structure, and a support rod 128. The lower end of the second inner tube 101 is hinged to the support plate 129 at the upper end of the support rod 128 via a fourth hinge pin 107. The two ends of the second angle adjustment mechanism are respectively hinged to the outer wall of the second inner tube 101 and the upper end of the support rod 128 via a fifth hinge pin 108 and a sixth hinge pin 144. The fourth hinge pin 107, the fifth hinge pin 108, and the sixth hinge pin 144 are all arranged parallel to the first hinge pin 104. The upper end of the support rod 128 is connected to... A foot pedal 132 is rotatably connected to a support plate 129 at the upper end of a support rod 128 via a pedal shaft 131. One end of the pedal shaft 131, extending into the support plate 129, is connected to a pull rod 130. A limiting pin 146 is fixed on the support plate 129 to limit the upward swing angle of the pull rod 130. One end of the pull rod 130 is connected to the pedal shaft 131, and the other end is connected to a second locking structure on a second angle adjustment mechanism via a second spring 133, enabling the second angle adjustment mechanism to be unlocked or locked by pulling or releasing the second locking structure. A limiting groove adapted to the limiting pin 146 is provided on the pull rod 130. By setting up a second angle adjustment mechanism, in conjunction with the foot pedal, multi-level angle adjustment of the tubing can be achieved.

[0045] Specifically, such as Figure 1 , Figure 3 and Figure 6 As shown, the second angle adjustment mechanism includes a second locking gas spring 127. The main body of the second locking gas spring 127 is hinged to the outer wall of the second inner tube 101 via a fifth hinge pin 108. The locking end of the second locking gas spring 127 is hinged to the upper end of the support rod 128 via a sixth hinge pin 144. The second locking end of the second locking gas spring 127 has a second locking hole 136. The second locking structure includes a second locking lever 134. The middle part of the second locking lever 134 is hinged in the second locking hole 136. One end of the second locking lever 134 is connected to the upper end of the second spring 133, and the other end of the second locking lever 134 is correspondingly arranged with the second locking head of the second locking gas spring 127. By setting the second locking lever, it is convenient to cooperate with the second locking gas spring to realize the unlocking or locking of the second locking gas spring.

[0046] like Figures 1-6As shown, a first U-shaped connector 137 is fixed to the lower end of the first inner tube 100, a second U-shaped connector 138 and a third U-shaped connector 139 are fixed to the upper and lower ends of the second inner tube 101, respectively, and a fourth U-shaped connector 140 is fixed to the outer wall of the second inner tube 101; the first U-shaped connector 137 and the second U-shaped connector 138 are hinged to each other via a first hinge pin 104, and the third U-shaped connector 139 is hinged to the support plate 129 via a fourth hinge pin 107; the lower end of the first angle adjustment mechanism is hinged to the fourth U-shaped connector 140 via a third hinge pin 106, and the upper end of the second angle adjustment mechanism is hinged to the fourth U-shaped connector 140 via a fifth hinge pin 108. The third hinge pin 106 is located diagonally above the fifth hinge pin 108 and is arranged close to the second inner tube 101. By setting the U-shaped connectors, the hinged connection between the various tubes is facilitated.

[0047] Specifically, such as Figure 1 and Figure 3 As shown, in this embodiment, a horizontally arranged mounting plate is fixed to the top of the support rod 128. Two parallel support plates 129 are fixed on the mounting plate. A fifth U-shaped connector 142 is also fixed on the mounting plate. The fifth U-shaped connector 142 is located on one side of the two support plates 129. The lower end of the second locking gas spring 127 is hinged in the fifth U-shaped connector 142.

[0048] like Figure 1 and Figure 3 As shown, in this embodiment, a bushing 143 is fixed on the support plate 129, and the foot pedal 132 is rotatably connected to the bushing 143 through the pedal shaft 131. One end of the pedal shaft 131 extends between the two support plates 129 and is vertically fixedly connected to one end of the pull rod 130. A limit pin 146 is fixed on the support plate 129, and the limit pin 146 abuts against the pull rod 130.

[0049] In this embodiment, the second locking gas spring 127 can adopt a commonly used existing structure, and the specific locking principle is the existing technology of locking gas springs.

[0050] In this embodiment, the multi-stage composite adjustable steering mechanism for agricultural machinery can be used by stepping on the foot pedal 132 to rotate the pedal shaft 131, which in turn drives the pull rod 130 to rotate downwards with the foot pedal 132. The pull rod 130 pulls one end of the second locking lever 134 downwards through the second spring 133, and the other end of the second locking lever 134 moves upwards, driving the second locking head of the second locking gas spring 127 to open, allowing the second locking gas spring 127 to extend and retract, thus making the angle of the second inner tube 101 relative to the support rod 128 adjustable. When the foot pedal 132 is no longer pressed, the pull rod 130 returns to its original position under the action of the second spring 133, closing the second locking head of the second locking gas spring 127 and locking the second locking gas spring 127.

[0051] The multi-stage composite adjustable steering mechanism for agricultural machinery in this embodiment is based on a composite adjustment and locking mechanism of gear plate engagement, inner and outer tube locking, and cable traction. It realizes bidirectional angle and bidirectional height adjustment. By engaging or disengaging the gear plate, the inner and outer tubes can be brought into contact or separated. By rotating the adjusting rod, the cable can be extended or retracted to lock or unlock the gas spring.

[0052] Example 5 This embodiment provides an agricultural machine, including an agricultural machine body and a multi-stage composite adjustable steering mechanism as described in any of the above embodiments, wherein the multi-stage composite adjustable steering mechanism is installed in the cab of the agricultural machine body.

[0053] In this embodiment, an outer sheath 147 can be fitted over the entire first inner tube 100, second inner tube 101, and outer tube 102, allowing the handle 116 to protrude from the outer sheath 147. Figure 7 As shown.

[0054] The agricultural machinery of this embodiment can achieve coordinated adjustment in two dimensions: front and rear, and up and down via the steering wheel. This machinery is simple to operate and offers high adjustment precision. For the driver, using the same mechanism for both height and angle adjustment makes operation more intuitive and convenient. In traditional designs, the driver may need to adjust the height first, then the angle, a cumbersome process. The integrated mechanism allows for simultaneous adjustment of both functions with a simple operation, improving driving comfort and convenience. The integrated mechanism can be designed to be more compact and precise; through optimized design, the adjustment accuracy can be better controlled, allowing the driver to more accurately adjust the steering column position for a more comfortable driving posture.

[0055] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0058] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-stage compound regulating direction machine for agricultural machinery, characterized in that, The device includes a first inner tube, an outer tube, a second inner tube, a height adjustment mechanism, a first angle adjustment mechanism, and a pull cable. The lower end of the outer tube is sleeved on the upper end of the first inner tube. The lower end of the first inner tube and the upper end of the second inner tube are hinged together by a first hinge shaft. A clamp is fixed to the lower end of the outer tube and sleeved on the outside of the first inner tube. Two ear plates are fixed to the outer surface of the opening side of the clamp. The two ear plates are connected to a height adjustment mechanism that can tighten or loosen the first inner tube by rotation. The side walls of the first inner tube and the second inner tube are connected by the first angle adjustment mechanism. One end of the height adjustment mechanism is connected to the upper end of the pull cable, and the lower end of the pull cable is connected to a first locking structure on the first angle adjustment mechanism, which can be pulled or released to unlock or lock the first angle adjustment mechanism.

2. The multi-stage compound regulating direction machine of agricultural machinery according to claim 1, characterized in that, The height adjustment mechanism includes an adjustment rod, a first toothed disc, and a second toothed disc. The adjustment rod passes through and rotates on a lug plate. The first toothed disc is fixed to the outer side of another lug plate. The second toothed disc is fixed on the adjustment rod and arranged opposite to the first toothed disc. One end of the adjustment rod is fixed with a pull plate for connecting the upper end of the pull cable. The rotation of the adjustment rod allows the second toothed disc to mesh with or be misaligned with the first toothed disc, enabling the two lug plates to move away from or closer to each other.

3. The multi-stage compound regulating direction machine of claim 2, wherein, The two ear plates are a first ear plate and a second ear plate, the adjusting rod is rotatably connected to the first ear plate, the first gear plate is fixed on the outer side of the second ear plate, a pull plate is fixed to one end of the adjusting rod extending out of the first ear plate, and a second gear plate is fixed to the outer side wall of the section of the adjusting rod extending out of the second ear plate.

4. The multi-stage compound regulating direction machine of claim 3, wherein, A bearing is mounted on the first ear plate, and the adjusting rod is fixedly connected to the inner ring of the bearing.

5. The multi-stage compound regulating direction machine of claim 2, wherein, A clamping buffer gap is provided between the clamp and the outer tube. The clamping buffer gap extends along the circumference of the outer tube, and one end of the clamping buffer gap is connected to the opening between the two ear plates. A first spring is pressed between the two ear plates, and the first spring is sleeved on the adjusting rod.

6. The multi-stage compound regulating direction machine of claim 1, wherein, The first angle adjustment mechanism includes a first locking gas spring. The locking end of the first locking gas spring is hinged to the outer side of the lower end of the first inner tube through a second hinge shaft. The main body structure end of the first locking gas spring is hinged to the outer side wall of the second inner tube through a third hinge shaft. The second hinge shaft and the third hinge shaft are both arranged parallel to the first hinge shaft. The first locking structure includes a first locking lever, the locking end of the first locking gas spring is provided with a first locking hole, the first locking lever is hinged in the first locking hole, one end of the first locking lever is connected to the lower end of the pull wire, and the other end of the first locking lever is arranged correspondingly to the first locking head of the first locking gas spring.

7. The multi-stage compound regulating direction machine of claim 1, wherein, It also includes a second angle adjustment mechanism, a second locking structure and a support rod. The lower end of the second inner tube is hinged to the support plate at the upper end of the support rod through a fourth hinge shaft. The two ends of the second angle adjustment mechanism are respectively hinged to the outer wall of the second inner tube and the upper end of the support rod through a fifth hinge shaft and a sixth hinge shaft. The fourth hinge shaft, the fifth hinge shaft and the sixth hinge shaft are all arranged parallel to the first hinge shaft. A foot pedal is connected to the upper end of the support rod. The foot pedal is rotatably connected to the support plate at the upper end of the support rod via a pedal shaft. One end of the pedal shaft, which extends into the support plate, is connected to a pull rod. A limiting pin is fixed on the support plate to limit the pull rod. One end of the pull rod is connected to the pedal shaft, and the other end of the pull rod is connected to the second locking structure on the second angle adjustment mechanism via a second spring. The pull rod can pull or release the second locking structure to unlock or lock the second angle adjustment mechanism.

8. The multi-stage compound regulating direction machine of claim 7, wherein, The second angle adjustment mechanism includes a second locking gas spring. The main body structure end of the second locking gas spring is hinged to the outer wall of the second inner tube through a fifth hinge axis, and the locking end of the second locking gas spring is hinged to the upper end of the support rod through a sixth hinge axis. The second locking end of the second locking gas spring has a second locking hole. The second locking structure includes a second locking lever. The middle part of the second locking lever is hinged in the second locking hole. One end of the second locking lever is connected to the upper end of the second spring. The other end of the second locking lever is arranged correspondingly to the second locking head of the second locking gas spring.

9. The multi-stage compound regulating direction machine of claim 7, wherein, The lower end of the first inner tube is fixed with a first U-shaped connector, the upper end and the lower end of the second inner tube are respectively fixed with a second U-shaped connector and a third U-shaped connector, and the outer side wall of the second inner tube is fixed with a fourth U-shaped connector. The first U-shaped connector and the second U-shaped connector are hinged together by a first hinge axis, and the third U-shaped connector and the support plate are hinged together by a fourth hinge axis; the lower end of the first angle adjustment mechanism is hinged together with the fourth U-shaped connector by a third hinge axis, and the upper end of the second angle adjustment mechanism is hinged together with the fourth U-shaped connector by a fifth hinge axis. The third hinge axis is located diagonally above the fifth hinge axis and is arranged close to the second inner tube.

10. An agricultural machine characterized by comprising: The invention includes an agricultural machinery body and a multi-stage composite adjustable steering mechanism for agricultural machinery as described in any one of claims 1 to 9, wherein the multi-stage composite adjustable steering mechanism for agricultural machinery is installed in the cab of the agricultural machinery body.

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