Novel mower header height adjusting device
By designing a new lawn mower cutting table height adjustment device with synchronous height adjustment, the handle pull rod is used to drive the support rod to rotate, so as to synchronize the front and rear height adjustment of the cutting table assembly, and reduce the operating force through the pulling spring, the problem of high operation strength of cutting table height adjustment in the prior art is solved, and simpler and lower-strength operations are achieved.
Patent Information
- Application Number
- CN202420603428.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-03-27
AI Technical Summary
When mowing grass in different grass fields, the existing lawn mower cutting platform height adjustment device requires frequent operation of the cutting platform height adjustment handle, resulting in greater operation strength.
A new lawn mower mower mower mower is designed, and the synchronous height adjustment mechanism is adopted to drive the support rod to rotate through the handle pull rod. The front and rear height adjustment mechanism synchronizes the height of the cutting table assembly, and reduces the operating force when the handle pull rod through the second tension spring and the first tension spring.
The operation steps are simplified, the force required when the handle is pulled, the working strength is reduced, and the structure is maintained simplicity.
Smart Images
Figure CN222803451U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lawn mower cutting platforms, and particularly relates to a novel lawn mower cutting platform height adjustment device. Background Art
[0002] A lawn mower is a device that mows and trims the grass. Different grasses require mowing at different heights, so a height adjustment device is set to control the height of the cutting table.
[0003] At present, when cutting table height adjustment devices of general lawn mowers cut different grasses on different grasslands, it is necessary to adjust the cutting table height from the ground to the front and rear, or from the left and right sides of the cutting table. The cutting table height adjustment handle needs to be frequently operated to adjust the cutting table height, resulting in greater work intensity when operating the handle pull rod. Utility Model Content
[0004] The utility model aims to provide a novel cutting table height adjustment device for a lawn mower, which can simplify the structure and the operation steps at the same time, and greatly reduce the force required when operating the handle pull rod, thereby reducing the work intensity.
[0005] The technical solutions adopted in this utility are as follows:
[0006] A novel lawn mower cutting table height adjustment device comprises a machine tool body, a shift plate is fixedly connected to the machine tool body, a support rod is fixedly connected to the machine tool body and located at the lower side of the shift plate, a handle pull rod matched with the shift plate is fixedly connected to the support rod, two front height adjustment mechanisms and two rear height adjustment mechanisms are connected to the support rod, the lower sides of the front height adjustment mechanisms and the rear height adjustment mechanisms are connected to the same cutting table assembly, and a first tension spring is arranged between the shift plate and the front end of the cutting table assembly.
[0007] Furthermore, the front height adjustment mechanism includes a main rocker fixedly connected to the support rod, and one end of the main rocker close to the rear height adjustment mechanism is rotatably connected to an adjusting rod, and the lower end of the adjusting rod is rotatably connected to the header assembly.
[0008] Furthermore, the rear height adjustment mechanism includes an adjusting rod fixedly connected to the supporting rod, the end of the adjusting rod toward the rear end is rotatably connected to a connecting rod, the end of the connecting rod away from the adjusting rod is rotatably connected to a rocker arm, the middle position of the rocker arm is rotatably connected to the machine tool body, the other end of the rocker arm is rotatably connected to a connecting plate, the middle position of the connecting plate is rotatably connected to the end of the rocker arm, the front end of the rocker arm is rotatably connected to the machine tool body, and the rear end of the rocker arm is rotatably connected to the cutting table assembly.
[0009] Furthermore, the shift plate includes a plate body fixedly connected to the machine tool body, the plate body is provided with a connecting groove and a plurality of locking grooves connected to the connecting groove, a second tension spring with an upper end connected thereto is installed on the upper part of the plate body, and the lower end of the second tension spring is connected to the handle pull rod.
[0010] Furthermore, a transverse slide is vertically slidably connected to the plate body, the lower end of the second tension spring is connected to the transverse slide, and the handle pull rod is horizontally slidably connected to the inside of the transverse slide.
[0011] Furthermore, a guide rail is fixedly connected to the front side of the plate body, and the transverse slide is vertically slidably connected to the inside of the guide rail.
[0012] The technical effects achieved by this utility model are:
[0013] The utility model discloses a new lawn mower cutting table height adjustment device which can synchronously adjust the front and rear ends of the cutting table assembly, thereby simplifying the operation steps. In the process of pulling the handle pull rod, the second tension spring and the first tension spring can greatly reduce the force required for operating the handle pull rod, thereby reducing the working intensity and having a relatively simple structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of the present invention at the lowest gear position;
[0015] Figure 2 This is a schematic diagram of the structure of the present invention at the highest gear position;
[0016] Figure 3 It is a structural schematic diagram of the practical gear plate.
[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0018] 1. Machine tool body; 2. Shift plate; 3. Support rod; 4. Main rocker; 5. Handle pull rod; 6. Adjustment pull rod; 7. Cutting table assembly; 8. Adjustment rod; 9. Connecting rod; 10. Rocker arm; 11. Connecting plate; 12. Plate body; 13. First tension spring; 14. Connecting groove; 15. Locking groove; 16. Second tension spring; 17. Horizontal slide; 18. Guide rail. DETAILED DESCRIPTION
[0019] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.
[0020] like Figure 1-3 As shown, a novel lawn mower cutting table height adjustment device comprises a machine tool body 1, Figure 1-3Only a partial structure of the machine tool body 1 is drawn in the figure, a shift plate 2 is fixedly connected to the machine tool body 1, a support rod 3 is fixedly connected to the machine tool body 1 and located at the lower side of the shift plate 2, a handle pull rod 5 adapted to the shift plate 2 is fixedly connected to the support rod 3, two front height adjustment mechanisms and two rear height adjustment mechanisms are connected to the support rod 3, and the lower sides of the front height adjustment mechanism and the rear height adjustment mechanism are connected to the same header assembly 7. When the handle pull rod 5 drives the support rod 3 to rotate, the front and rear heights of the header assembly 7 can be synchronously adjusted through the front height adjustment mechanism and the rear height adjustment mechanism, thereby simplifying the operation steps and reducing the difficulty of height adjustment of the header assembly 7.
[0021] Among them, Figure 1-2 As shown, the front height adjustment mechanism includes a main rocker arm 4 fixedly connected to the support rod 3, and the end of the main rocker arm 4 close to the rear height adjustment mechanism is rotatably connected to the adjusting rod 6, and the lower end of the adjusting rod 6 is rotatably connected to the cutting table assembly 7. When the handle rod 5 drives the support rod 3 to rotate clockwise, the adjusting rod 6 can be pulled upward by the main rocker arm 4, thereby driving the front end of the cutting table assembly 7 to adjust its height through the adjusting rod 6.
[0022] Among them, Figure 1-2 As shown, the rear height adjustment mechanism includes an adjusting rod 8 fixedly connected to the support rod 3. When the support rod 3 rotates, the adjusting rod 8 can be driven to rotate. The end of the adjusting rod 8 toward the rear end is rotatably connected with a connecting rod 9. When the adjusting rod 8 rotates, the connecting rod 9 will be pushed. The end of the connecting rod 9 away from the adjusting rod 8 is rotatably connected with a rocker arm 10. The middle position of the rocker arm 10 is rotatably connected to the machine tool body 1. When the connecting rod 9 moves, it will drive the connecting rod 9 to rotate with the connection between the connecting rod 9 and the machine tool body 1 as the center of the circle. The other end of the rocker arm 10 is rotatably connected with a connecting plate 11. The middle position of the connecting plate 11 is rotatably connected to the end of the rocker arm 10. The front end of the rocker arm 10 is rotatably connected to the machine tool body 1, and the rear end of the rocker arm 10 is rotatably connected to the cutting table assembly 7. When the rocker arm 10 rotates, it will drive the connecting plate 11 to rotate with the front end of the connecting plate 11 as the center of the circle, pull the rear end of the cutting table assembly 7, and adjust the height of the rear end of the cutting table assembly 7.
[0023] Among them, in order to reduce the work intensity when the user operates the handle pull rod 5, a first tension spring 13 is arranged between the shift plate 2 and the front end of the cutting table assembly 7. The first tension spring 13 bears part of the gravity of the cutting table assembly 7, which can effectively reduce the force required to pull up the cutting table assembly 7, reduce the work intensity, and maintain a relatively simple structure to reduce costs.
[0024] Moreover, since the force transmitted to the support rod 3 from the rear end of the cutting table assembly 7 can be reduced by optimizing the structure of the adjusting rod 8, the connecting rod 9, the rocker arm 10 and the connecting plate 11, and the front height adjustment mechanism between the front end of the cutting table assembly 7 and the support rod 3 has fewer structures and is not easy to optimize, and the required force is relatively large, it is better to set the first tension spring 13 between the shift plate 2 and the cutting table assembly 7.
[0025] like Figure 3 As shown, in order to further reduce the work intensity of the user when operating the handle rod 5, the technical solution improves the structure of the shift plate 2. Specifically, the shift plate 2 includes a plate body 12 fixedly connected to the machine tool body 1, and a connecting groove 14 and a plurality of locking grooves 15 connected to the connecting groove 14 are provided on the plate body 12. The handle rod 5 moves into the connecting groove 14 to change the gear position. When the handle rod 5 moves into one of the locking grooves 15, the handle rod 5 is adjusted to the corresponding gear position and locked.
[0026] A second tension spring 16 is installed on the upper part of the plate body 12 and connected to the plate body 12 at its upper end. The lower end of the second tension spring 16 is connected to the handle rod 5. The second tension spring 16 can further reduce the force required to pull up the handle rod 5.
[0027] At the same time, in order to reduce the influence of the second tension spring 16 on the operation of the handle rod 5, a transverse slide 17 is vertically slidably connected to the plate body 12, the lower end of the second tension spring 16 is connected to the transverse slide 17, and the handle rod 5 is horizontally slidably connected inside the transverse slide 17. Through the setting of the transverse slide 17, the influence of the second tension spring 16 on the handle rod 5 when it moves horizontally inside the locking groove 15 can be reduced.
[0028] Specifically, a guide rail 18 is fixedly connected to the front side of the plate body 12 , and the transverse slide 17 is vertically slidably connected inside the guide rail 18 , so as to guide the moving direction of the transverse slide 17 .
[0029] The working principle of the utility model is as follows: when in use, the handle pull rod 5 is pulled to drive the support rod 3 to rotate, and when the support rod 3 rotates, the front and rear heights of the header assembly 7 are synchronously adjusted through the front height adjustment mechanism and the rear height adjustment mechanism;
[0030] At the same time, in the process of pulling the handle rod 5, the second tension spring 16 and the first tension spring 13 can greatly reduce the force required for operating the handle rod 5, thereby reducing the work intensity.
[0031] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.
Claims
1. A novel lawn mower cutting table height adjustment device, comprising a machine tool body (1), characterized in that: A shift plate (2) is fixedly connected to the machine tool body (1), a support rod (3) is fixedly connected to the machine tool body (1) and located at the lower side of the shift plate (2), a handle pull rod (5) matched with the shift plate (2) is fixedly connected to the support rod (3), two front height adjustment mechanisms and two rear height adjustment mechanisms are connected to the support rod (3), the lower sides of the front height adjustment mechanisms and the rear height adjustment mechanisms are connected to the same cutting table assembly (7), and a first tension spring (13) is arranged between the front end of the shift plate (2) and the cutting table assembly (7).
2. The new lawn mower cutting table height adjustment device according to claim 1 is characterized by: The front height adjustment mechanism comprises a main rocker (4) fixedly connected to the support rod (3); one end of the main rocker (4) close to the rear height adjustment mechanism is rotatably connected to an adjustment rod (6); and the lower end of the adjustment rod (6) is rotatably connected to a cutting platform assembly (7).
3. The new lawn mower cutting table height adjustment device according to claim 1 is characterized by: The rear height adjustment mechanism comprises an adjusting rod (8) fixedly connected to the support rod (3); the end of the adjusting rod (8) facing the rear end is rotatably connected to a connecting rod (9); the end of the connecting rod (9) away from the adjusting rod (8) is rotatably connected to a rocker arm (10); the middle position of the rocker arm (10) is rotatably connected to the machine tool body (1); the other end of the rocker arm (10) is rotatably connected to a connecting plate (11); the middle position of the connecting plate (11) is rotatably connected to the end of the rocker arm (10); the front end of the rocker arm (10) is rotatably connected to the machine tool body (1); and the rear end of the rocker arm (10) is rotatably connected to the header assembly (7).
4. The new lawn mower cutting table height adjustment device according to claim 1 is characterized by: The shift plate (2) comprises a plate body (12) fixedly connected to the machine tool body (1), the plate body (12) being provided with a connecting groove (14) and a plurality of locking grooves (15) connected to the connecting groove (14), a second tension spring (16) having an upper end connected thereto being installed on the upper part of the plate body (12), and the lower end of the second tension spring (16) being connected to the handle pull rod (5).
5. The new lawn mower cutting table height adjustment device according to claim 4 is characterized in that: The plate body (12) is vertically slidably connected to a transverse slide (17), the lower end of the second tension spring (16) is connected to the transverse slide (17), and the handle pull rod (5) is horizontally slidably connected inside the transverse slide (17).
6. The new lawn mower cutting table height adjustment device according to claim 5 is characterized by: The front side of the plate body (12) is fixedly connected with a guide rail (18), and the transverse slide (17) is vertically slidably connected inside the guide rail (18).