Power rake tooth with adjustable spacing
By introducing a worm gear and rack and pinion structure into the power rake teeth, the spacing between the rake teeth can be flexibly adjusted, solving the problem that a fixed rake tooth spacing cannot adapt to complex working environments, and improving the applicability and ease of maintenance of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-27
AI Technical Summary
The fixed tooth spacing of existing power rakes makes them unsuitable for complex operating environments with different soil types and weed growth conditions.
Design an adjustable pitch power rake tooth. By setting an adjustment mechanism in the mounting base, and using worm gear transmission and gear rack structure, the pitch of the rake tooth can be flexibly adjusted. A power tool is used to drive the gear to rotate, which drives the rack to move to adjust the pitch of the rake tooth.
It enables flexible adjustment of the rake tooth spacing according to soil and weed conditions, improving the applicability and flexibility of the equipment and simplifying the maintenance process.
Smart Images
Figure CN224037832U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of agricultural equipment technology, specifically to a power harrow tooth with adjustable spacing. Background Technology
[0002] In agriculture, horticulture, and landscaping, the power rake is a commonly used soil treatment device, widely used for tasks such as harrowing, loosening soil, and clearing weeds. The power rake mainly consists of a power system, rake teeth, rake shaft, and frame. The rake teeth are the core working component of the power rake, directly contacting the soil or other materials during operation, responsible for loosening the soil and clearing surface weeds.
[0003] In existing technologies, the teeth of a power rake are usually fixed on the rake shaft, and the spacing is generally set through standardized design. This fixed tooth spacing can meet the operational needs under specific conditions, but in complex practical applications such as different soil types, weed growth conditions, and operating depths, the fixed-spacing teeth often cannot effectively cope with changing working environments.
[0004] Therefore, this application provides a power rake tooth with adjustable spacing to solve the above problems. Utility Model Content
[0005] This application provides an adjustable pitch power rake tooth, which aims to solve the problem in the prior art where the rake teeth of the power rake are usually fixed on the rake shaft and the pitch is generally set by a standardized design. This fixed rake tooth pitch can meet the operational requirements under specific conditions.
[0006] To achieve the above objectives, this application provides the following technical solution: an adjustable spacing power rake tooth, including a power rake shaft and a mounting base fixedly installed at the lower end of the power rake shaft, on which the rake tooth body is mounted opposite to the mounting base, and an adjustment mechanism is provided inside the mounting base;
[0007] The adjustment mechanism includes a first gear rotatably disposed inside the assembly base and a movable block disposed opposite inside the assembly base. A first rack that meshes with the first gear is fixedly installed on the movable block. The rake tooth body is connected to the movable block. Fixed covers are symmetrically installed on the assembly base. The fixed covers have internal hexagonal cylinders. Rotating the first gear drives the first rack to move laterally, causing the movable block and the connected rake tooth body to move synchronously, thereby realizing the spacing adjustment.
[0008] Preferably, the assembly base has a movable frame and a limiting rod installed inside the movable frame symmetrically distributed inside the movable frame. The movable block is slidably connected to the movable frame, and the movable block is sleeved with the limiting rod.
[0009] Preferably, the lower end of the first gear is fixedly connected with a connecting rod penetrating the assembly seat, the lower end of the assembly seat is provided with a worm gear seat connected with the connecting rod, the worm gear seat is provided with an external hexagonal shaft rod, the worm gear transmission ratio is 20:1, and displacement caused by operation vibration is prevented.
[0010] Preferably, the lower end of the assembly seat is oppositely provided with a moving groove, the rabble body is fixedly provided with a fixed plate inserted with the moving groove, and the fixed plate is oppositely provided with an insertion groove.
[0011] Preferably, the inner portion of the movable block is rotatably connected with a fixed shaft, two second gears are equidistantly sleeved on the fixed shaft, the inner portion of the movable block is oppositely provided with a limiting seat corresponding to the second gears, the lower end of the limiting seat is provided with a second rack meshedly connected with the second gears, the second rack is matched with the insertion groove, the gear modulus is 1.5, the rack stroke is 10 mm, and the insertion depth of the bolt is adjustable to prevent accidental falling out.
[0012] Preferably, one end of the fixed shaft penetrates the movable block, and the end of the fixed shaft penetrating the movable block is provided with an internal hexagonal groove, and the fixed shaft is horizontally aligned with the internal hexagonal cylinder.
[0013] The power rabble, by setting the worm gear seat below the assembly seat, using the external hexagonal shaft rod as a power input interface, rotating through the electric tool such as an electric hexagonal wrench, driving the worm to rotate in the worm gear seat to synchronously drive the first gear to rotate, the first gear is meshed with the first racks on both sides, when the gear rotates, the rack moves in the horizontal direction, thereby driving the interval between the two rabble bodies to be adjusted, so as to adjust the interval of the corresponding rabble body according to the equipment facing different soil. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structure schematic view of a power rabble with adjustable interval;
[0015] Figure 2 It is a structure schematic view of the bottom of the assembly seat;
[0016] Figure 3 It is a structure schematic view of the cross section of the assembly seat;
[0017] Figure 4 It is a structure schematic view of the cross section of the movable block;
[0018] Figure 5 It is a structure schematic view of the fixed plate;
[0019] Figure 6 It is a structure schematic view of the worm gear seat;
[0020] Figure 7 It is a structure schematic view of the fixed shaft;
[0021] Figure 8 For Figure 2 structure diagram enlarged at A in the middle;
[0022] Figure 9 For Figure 4 structure diagram enlarged at B in the middle.
[0023] In the figure:
[0024] 1, power rake shaft; 2, assembly seat; 21, fixed cover; 22, internal hexagonal cylinder; 23, moving groove; 3, rake body; 31, first gear; 311, connecting rod; 312, worm gear seat; 313, external hexagonal shaft; 32, first rack; 33, movable block; 331, second gear; 332, limiting seat; 333, second rack; 334, fixed shaft; 34, movable frame; 35, limiting rod; 4, fixed plate; 41, insertion slot. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.
[0026] The present embodiment provides a power rake with adjustable spacing, as shown in the figure, the power rake comprises a power rake shaft 1 and an assembly seat 2 fixedly installed at the lower end of the power rake shaft 1, a rake body 3 is oppositely installed on the assembly seat 2, and an adjusting mechanism is arranged in the interior of the assembly seat 2. Figures 1-9
[0027] The adjusting mechanism comprises a first gear 31 rotatably arranged in the interior of the assembly seat 2 and a movable block 33 oppositely arranged in the interior of the assembly seat 2, a first rack 32 engagedly connected with the first gear 31 is fixedly installed on the movable block 33, the rake body 3 is connected with the movable block 33, and a fixed cover 21 is symmetrically installed on the assembly seat 2, and an internal hexagonal cylinder 22 is formed in the fixed cover 21.
[0028] Specifically, rotating the first gear 31 drives the first rack 32 to move transversely, drives the movable block 33 and the connected rake body 3 to move synchronously, realizes spacing adjustment of the rake body 3, so that the worker can adjust the corresponding spacing to adapt to different soils, and the flexibility and applicability of the equipment during use are improved, the fixed cover 21 provides sealing protection, the internal hexagonal cylinder 22 is an interface for fixing the rake body 3 and the movable block 33, so as to realize quick disassembly connection of the movable block 33 and the rake body 3.
[0029] The inside of the assembly seat 2 is symmetrically distributed with a movable frame 34 and a limiting rod 35 installed inside the movable frame 34, the movable block 33 is in sliding connection with the movable frame 34, and the movable block 33 is sleeved with the limiting rod 35.
[0030] More specifically, the movable frame 34 provides a linear track, the limiting rod 35 prevents the movable block 33 from deviating, and the surface of the limiting rod 35 is plated with hard chromium to improve the overall hardness.
[0031] The lower end of the first gear 31 is fixedly connected with a connecting rod 311 penetrating the assembly seat 2, and the lower end of the assembly seat 2 is provided with a worm gear seat 312 connected with the connecting rod 311, and an outer hexagonal shaft 313 is arranged on the worm gear seat 312.
[0032] Further, by rotating the outer hexagonal shaft 313 to drive the worm, the worm gear and the connecting rod 311 are driven to rotate, thereby driving the first gear 31 to rotate synchronously, so as to adjust the distance between the rake tooth bodies 3.
[0033] The lower end of the assembly seat 2 is relatively provided with a moving groove 23, and the rake tooth body 3 is fixedly provided with a fixed plate 4 inserted with the moving groove 23, and the fixed plate 4 is relatively provided with an insertion groove 41.
[0034] Further, after the fixed plate 4 is inserted into the target position along the moving groove 23, it is fixed by cooperation of the second rack 333.
[0035] The inside of the movable block 33 is rotatably connected with a fixed shaft 334, two second gears 331 are equally sleeved on the fixed shaft 334, and a limiting seat 332 corresponding to the second gear 331 is relatively installed in the movable block 33. The lower end of the limiting seat 332 is provided with a second rack 333 in meshing connection with the second gear 331, and the second rack 333 is matched with the insertion groove 41.
[0036] It should be noted that by meshing the second gear 331 with the second rack 333, the second rack 333 is moved along the preset path of the limiting seat 332 until the second rack 333 is inserted into the insertion groove 41 on the fixed plate 4, and when disassembled, only the fixed shaft 334 needs to be rotated in reverse, and the surface of the second rack 333 is coated with a tungsten carbide wear-resistant coating.
[0037] One end of the fixed shaft 334 penetrates the movable block 33, and the end of the fixed shaft 334 penetrating the movable block 33 is provided with an internal hexagonal groove, and the fixed shaft 334 is horizontally aligned with the internal hexagonal cylinder 22.
[0038] It is worth mentioning that the transmission of the fixed shaft 334 can be operated by a single tool hexagonal wrench, simplifying the maintenance process. The inner hexagonal groove angle of the fixed shaft 334 is consistent with the inner hexagonal cylinder 22, so the worker only needs to insert the hexagonal wrench into the inner hexagonal cylinder 22 and extend it to insert into the inner hexagonal groove on the fixed shaft 334.
[0039] In use, by setting the worm gear seat 312 below the assembly seat 2, using the outer hexagonal shaft 313 as a power input interface, rotating by an electric tool such as an electric hexagonal wrench, driving the worm to rotate in the worm gear seat 312 to synchronously drive the first gear 31 to rotate, the first gear 31 is engaged with the first gear rack 32 on both sides, when the gear rotates, the gear rack moves in the horizontal direction, the movable block 33 is fixed on the back of the first gear rack 32, and slides in the movable frame 34 with the first gear rack 32, constrained by the limiting rod 35, to ensure straight line movement without deviation, thereby adjusting the distance between the two rake tooth bodies 3.
[0040] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical scheme and concept of the present application, can make equivalent replacement or change, which should be covered in the protection scope of the present application.
Claims
1. Adjustable distance power rake tooth, comprising a power rake shaft (1) and an assembly seat (2) fixedly installed at the lower end of the power rake shaft (1), a rake tooth body (3) being oppositely installed on the assembly seat (2), and an adjusting mechanism being arranged inside the assembly seat (2). characterized in that The adjusting mechanism comprises a first gear (31) rotatably arranged inside the assembly seat (2) and a movable block (33) oppositely arranged inside the assembly seat (2), the movable block (33) being fixedly installed with a first rack (32) engagedly connected with the first gear (31), the rake tooth body (3) being connected with the movable block (33), and the assembly seat (2) being symmetrically installed with a fixed cover (21) having an internal hexagonal cylinder (22) formed therein.
2. The adjustable spacing power rake of claim 1, wherein: The inside of the assembly seat (2) is symmetrically distributed with a movable frame (34) and a limiting rod (35) installed inside the movable frame (34), the movable block (33) being slidably connected with the movable frame (34) and the movable block (33) being sleeved with the limiting rod (35).
3. The adjustable spacing power rake of claim 2, wherein: The lower end of the first gear (31) is fixedly connected with a connecting rod (311) penetrating through the assembly seat (2), the lower end of the assembly seat (2) is installed with a worm gear seat (312) connected with the connecting rod (311), and the worm gear seat (312) is provided with an external hexagonal shaft rod (313).
4. The adjustable spacing power rake of claim 3, wherein: The lower end of the assembly seat (2) is oppositely formed with a moving groove (23), the rake tooth body (3) is fixedly installed with a fixed plate (4) inserted into the moving groove (23), and the fixed plate (4) is oppositely formed with an insertion groove (41).
5. An adjustable spacing power shovel tooth according to claim 4 wherein: The inside of the movable block (33) is rotatably connected with a fixed shaft (334), the fixed shaft (334) is sleeved with two second gears (331) at equal intervals, the inside of the movable block (33) is oppositely installed with a limiting seat (332) corresponding to the second gears (331), the lower end of the limiting seat (332) is provided with a second rack (333) engagedly connected with the second gears (331), and the second rack (333) is matched with the insertion groove (41).
6. The adjustable spacing power rake of claim 5, wherein: One end of the fixed shaft (334) penetrates through the movable block (33), and the end of the fixed shaft (334) penetrating through the movable block (33) is formed with an internal hexagonal groove, and the fixed shaft (334) is horizontally aligned with the internal hexagonal cylinder (22).