Handle height adjuster for a cultivator

Abstract

The application relates to a handle height adjuster of a farming machine, belonging to the field of farming machines, which comprises a support, a handrail, a toothed disc and a positioning mechanism, the support is arranged on the farming machine, the handrail is hingedly arranged on the support, the toothed disc is coaxially arranged on a rotating shaft of the handrail, and the positioning mechanism is arranged on the support and used for locking the toothed disc. The application has the effect of improving the convenience of adjusting the handle height of a hand-held farming machine.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery, and in particular to a handle height adjuster for an agricultural machinery. Background Technology

[0002] As an important tool in agricultural production, walk-behind agricultural tillers require the operator to hold the handle and control the throttle, clutch, brake, and other functions, as well as the direction of travel. Therefore, the comfort of operation directly affects the work efficiency and the operator's fatigue level.

[0003] Currently, most walk-behind agricultural tillers on the market use a fixed-height handle design. A small number of walk-behind tillers use a pin-type multi-hole adjustment mechanism, which allows for limited gear adjustment by inserting positioning pins into preset holes at different heights. However, adjusting the handle height using the pin-type structure requires holding the handle, pulling out the pin, adjusting the handle height, and then inserting the pin again. This adjustment process is cumbersome and laborious, resulting in low convenience for adjusting the handle height of walk-behind agricultural tillers. Utility Model Content

[0004] To improve the convenience of adjusting the handle height of a walk-behind agricultural tiller, this application provides a tiller handle height adjuster.

[0005] The technical solution for the tiller handle height adjuster provided in this application is as follows:

[0006] A height adjuster for the handlebars of a farming machine includes a support, a handlebar, a toothed disc, and a positioning mechanism. The support is mounted on the farming machine, the handlebar is hinged to the support, the toothed disc is coaxially mounted on the rotating shaft of the handlebar, and the positioning mechanism is mounted on the support and used to lock the toothed disc.

[0007] By adopting the above technical solution, the locking of the gear plate by the positioning mechanism can be released, thereby releasing the lock on the handlebar. The operator can then rotate the handlebar to adjust its height. Then, the gear plate is locked by the positioning mechanism to lock the handlebar at the current height, effectively improving the convenience of adjusting the handlebar height of the hand-held agricultural tiller.

[0008] Optionally, the positioning mechanism includes a positioning seat, a positioning rod, and a resetting member. The positioning seat is hinged to the support, the positioning rod is mounted on the positioning seat and is used to engage the gear plate, and the resetting member is mounted on the positioning seat and is used to drive the positioning seat to rotate toward the gear plate.

[0009] By adopting the above technical solution, the operator drives the positioning seat to rotate away from the gear plate. The positioning seat drives the positioning rod to disengage from the gear plate, thereby releasing the lock on the gear plate. After adjusting the height of the handrail, the reset component drives the positioning seat to rotate towards the gear plate, and the positioning rod can be re-engaged into the gear plate to position the gear plate, making it convenient to lock and unlock the gear plate.

[0010] Optionally, the reset element includes a reset spring, which is disposed on the positioning seat and connected to the support.

[0011] By adopting the above technical solution, when the operator drives the positioning seat to rotate away from the gear plate, the return spring is stretched and has a tendency to retract. After the operator releases the positioning seat, the return spring can drive the positioning seat to rotate towards the gear plate and reset.

[0012] Optionally, a control lever is provided on the side of the positioning seat facing the armrest.

[0013] By adopting the above technical solution, the control lever is easy for the operator to hold and drive the positioning seat to rotate.

[0014] Optionally, a connecting pin is inserted into the positioning seat, and the return spring is hooked onto the connecting pin.

[0015] By adopting the above technical solution, the connecting pin is inserted into the positioning seat, and then the return spring is hooked onto the connecting pin, thus conveniently completing the connection between the return spring and the positioning seat.

[0016] Optionally, a cotter pin is provided at one end of the connecting pin that passes through the positioning seat.

[0017] By adopting the above technical solution, the cotter pin prevents the connecting pin from detaching from the positioning seat, thereby improving the stability of the connecting pin on the positioning seat.

[0018] Optionally, the tooth pitch of the gear disc is the same as the diameter of the positioning rod.

[0019] By adopting the above technical solution, when the positioning rod is engaged with the gear plate, the positioning rod abuts against the adjacent teeth of the gear plate, thereby improving the stability of locking the gear plate.

[0020] Optionally, the support can be detachably mounted on the tiller by bolts.

[0021] By adopting the above technical solution, the support is assembled on the agricultural machine with bolts, which facilitates the installation and removal of the support on the agricultural machine.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By releasing the positioning mechanism from locking the gear plate, the lock on the handlebar can be released, allowing the operator to rotate the handlebar to adjust its height. Then, by locking the gear plate through the positioning mechanism, the handlebar can be locked at the current height, effectively improving the convenience of adjusting the handlebar height of the hand-held agricultural tiller.

[0024] 2. The operator drives the positioning seat to rotate away from the gear plate. The positioning seat drives the positioning rod to disengage from the gear plate, thus releasing the gear plate from its lock. After adjusting the height of the handrail, the reset component drives the positioning seat to rotate closer to the gear plate. The positioning rod can then re-engage into the gear plate, positioning the gear plate and facilitating easy locking and unlocking of the gear plate.

[0025] 3. Insert the connecting pin into the positioning seat, and then hook the return spring onto the connecting pin to easily complete the connection between the return spring and the positioning seat. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the handle height adjuster of the agricultural tiller according to an embodiment of this application.

[0027] Figure 2 This is a partial structural schematic diagram of an embodiment of this application (partial cross-sectional view of the support and positioning seat in the figure).

[0028] Reference numerals: 1. Support; 2. Handrail; 3. Gear plate; 4. Positioning mechanism; 41. Positioning seat; 42. Positioning rod; 43. Reset component; 431. Reset spring; 5. Control rod; 6. Connecting pin; 7. Cotter pin. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a height adjuster for the handle of a farming machine.

[0031] Reference Figure 1 , Figure 2 The height adjuster for the handlebars of a farm tiller includes a support 1, a handlebar 2, a gear plate 3, and a positioning mechanism 4. The support 1 is inserted and installed on the farm tiller. A bolt is threaded through the farm tiller and threaded onto the support 1, thereby positioning and installing the support 1 on the farm tiller. When the support 1 needs to be removed, the bolt is unscrewed and the support 1 can be removed from the farm tiller, improving the convenience of installing and removing the support 1 on the farm tiller.

[0032] Reference Figure 1 , Figure 2The handrail 2 is vertically hinged to the support 1, and the gear plate 3 is coaxially mounted on the rotating shaft of the handrail 2. The positioning mechanism 4 is mounted on the support 1 and is used to lock the gear plate 3. The positioning mechanism 4 includes a positioning seat 41, a positioning rod 42, and a reset member 43. The positioning seat 41 is vertically hinged to the support 1, and the positioning rod 42 is mounted on the positioning seat 41. The positioning rod 42 is used to engage between adjacent teeth of the gear plate 3. The tooth pitch of the gear plate 3 is the same as the diameter of the positioning rod 42, so that when the positioning rod 42 engages between adjacent teeth of the gear plate 3, the positioning rod 42 can abut against the adjacent teeth of the gear plate 3, thereby improving the stability of the positioning rod 42 in locking the gear plate 3.

[0033] Reference Figure 1 , Figure 2 A control lever 5 is installed on the side of the positioning seat 41 facing the handrail 2. The operator holds the control lever 5 and presses it to drive the positioning seat 41 to rotate away from the gear plate 3. The control lever 5 can also extend the lever arm for the operator to drive the positioning seat 41 to rotate, reduce the force required for the operator to drive the positioning seat 41 to rotate, and improve the convenience of the operator to drive the positioning seat 41 to rotate.

[0034] Reference Figure 1 , Figure 2 The reset element 43 is installed on the positioning seat 41. The reset element 43 is used to drive the positioning seat 41 to rotate toward the gear plate 3. The reset element 43 includes a reset spring 431. A connecting pin 6 is inserted laterally on the positioning seat 41. A cotter pin 7 is installed at one end of the connecting pin 6 that passes through the positioning seat 41. One end of the reset spring 431 is installed on the support 1, and the other end of the reset spring 431 is hooked on the connecting pin 6.

[0035] When assembling the return spring 431, first insert the connecting pin 6 horizontally onto the positioning seat 41, then install the cotter pin 7 onto the end of the connecting pin 6 that passes through the positioning seat 41. The cotter pin 7 prevents the connecting pin 6 from detaching from the positioning seat 41, thus improving the stability of the connecting pin 6 on the positioning seat 41. Then pull the return spring 431 so that the return spring 431 hooks onto the connecting pin 6, which can easily and quickly complete the connection between the return spring 431 and the positioning seat 41, and facilitates the subsequent disassembly of the return spring 431 for maintenance.

[0036] The implementation principle of the handle height adjuster for a farm tiller according to this application embodiment is as follows: The operator presses the control lever 5, which drives the positioning seat 41 to rotate away from the toothed disc 3. At this time, the return spring 431 is stretched and tends to drive the positioning seat 41 to rotate closer to the toothed disc 3. The positioning seat 41 drives the positioning rod 42 to disengage from the toothed disc 3, thereby releasing the lock on the toothed disc 3 and the lock on the handle 2. The operator can then drive the handle 2 to rotate and adjust its height. After adjusting to the desired height, the operator releases the control lever 5. The return spring 431 drives the positioning seat 41 to rotate closer to the toothed disc 3. The positioning seat 41 drives the positioning rod 42 to engage with the toothed disc 3, locking the disc again and locking the handle 2 at the current height. This simplifies the operation steps of adjusting the handle height and effectively improves the convenience of adjusting the handle height of the hand-held farm tiller.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An agricultural implement handle height adjuster characterized by: It includes a support (1), a handle (2), a gear (3) and a positioning mechanism (4). The support (1) is mounted on the agricultural tiller. The handle (2) is hinged to the support (1). The gear (3) is coaxially mounted on the shaft of the handle (2). The positioning mechanism (4) is mounted on the support (1) and is used to lock the gear (3).

2. The tiller handle height adjuster of claim 1, wherein: The positioning mechanism (4) includes a positioning seat (41), a positioning rod (42), and a reset member (43). The positioning seat (41) is hinged on the support (1). The positioning rod (42) is mounted on the positioning seat (41) and is used to engage the gear plate (3). The reset member (43) is mounted on the positioning seat (41) and is used to drive the positioning seat (41) to rotate toward the gear plate (3).

3. The tiller handle height adjuster of claim 2, wherein: The reset component (43) includes a reset spring (431), which is disposed on the positioning seat (41) and connected to the support (1).

4. The tiller handle height adjuster of claim 2, wherein: A control lever (5) is provided on the side of the positioning seat (41) facing the handrail (2).

5. The tiller handle height adjuster of claim 3, wherein: A connecting pin (6) is inserted into the positioning seat (41), and the reset spring (431) is hooked onto the connecting pin (6).

6. The tiller handle height adjuster of claim 5, wherein: The connecting pin (6) has a cotter pin (7) at one end that passes through the positioning seat (41).

7. The tiller handle height adjuster of claim 2, wherein: The tooth pitch of the toothed disc (3) is the same as the diameter of the positioning rod (42).

8. The tiller handle height adjuster of claim 1, wherein: The support (1) is detachably mounted on the agricultural machine by bolts.

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