Gear box assembly of edge trimmer

Abstract

The utility model relates to a gear box assembly of an edge trimmer, and belongs to the technical field of gear boxes. Comprising an upper machine shell, a mounting box fixed to the right end of the upper machine shell, a lower machine shell fixed to the bottom end of the mounting box, a rotating shaft rotationally connected to the interior of the upper machine shell, a driving bevel gear fixed to the outer surface of the rotating shaft, a rotating rod rotationally connected to the interiors of the mounting box and the lower machine shell, and a driving bevel gear fixed to the outer surface of the rotating shaft, the supporting mechanism is arranged in the lower machine shell, the sealing mechanism is arranged in the upper machine shell, the driven bevel gear is fixed on the outer surface of the rotating rod, the two pairs of through holes are formed in the upper machine shell, the upper machine shell comprises two opposite outer shells, and the driving bevel gear is meshed with the driven bevel gear. According to the gear box assembly of the edge trimmer, the supporting mechanisms are arranged in the upper machine shell, the mounting box and the lower machine shell, the driving bevel gear and the driven bevel gear can be cleaned conveniently, the sealing mechanism is arranged on the upper machine shell, and sealing can be kept at different temperatures.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a trimmer gear box assembly. Background Art

[0002] Trimmers are mostly used for wood chamfering, metal trimming, strip edging and other motor-type trimming equipment with strong activity. Gearboxes are used in trimmers. The main function of the gearbox is to transmit the power generated by the wind wheel to the generator and make it get the corresponding speed. Usually the speed of the wind wheel is very low, far from the speed required by the generator. It must be achieved through the speed increase effect of the gear pair of the gearbox, so the gearbox is also called a speed increaser.

[0003] For example, a gearbox is disclosed in a Chinese patent (CN205859126U), more specifically, a double-seal gearbox for a frozen trimmer. When the dustproof oil seal of the gearbox fails, the airtight oil seal of the gearbox can reduce the dust entering the gearbox body, and the airtight oil seal of the gearbox reduces the possibility of dust entering the gearbox body due to the air pressure difference between the inside and outside of the gearbox body. The gearbox cover is connected to the gearbox body, and the central shaft of the gearbox is installed in the gearbox body through bearings I and II. A gearbox dustproof oil seal and a gearbox airtight oil seal are arranged between the gearbox body and the central shaft of the gearbox, and the gearbox dustproof oil seal is located above the gearbox airtight oil seal, bearing I is connected to the gearbox cover, the large bevel gear is connected to the central shaft of the gearbox, the transmission shaft is installed at the left end of the gearbox body, and the small bevel gear is installed on the transmission shaft, and the large bevel gear is meshed with the small bevel gear.

[0004] The above scheme also has the following technical deficiencies: it is not convenient to disassemble the large bevel gears, small bevel gears and transmission shaft in the gear box; although the above scheme can reduce the dust entering the gear box to a certain extent, the gear box still needs to be cleaned after a period of use. The above scheme is not convenient to remove the large bevel gears and small bevel gears for cleaning. Based on this, a trimmer gear box assembly is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a trimmer gearbox assembly, which has the advantage of conveniently removing the driving bevel gear and the driven bevel gear for cleaning, thereby solving the problem that the driving bevel gear and the driven bevel gear are inconvenient to remove for cleaning.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a trimming machine gearbox assembly, comprising an upper housing, a mounting box fixed at the right end of the upper housing, a lower housing fixed at the bottom end of the mounting box, a rotating shaft rotatably connected to the interior of the upper housing, a driving bevel gear fixed to the outer surface of the rotating shaft, a rotating rod rotatably connected to the interior of the mounting box and the lower housing, a supporting mechanism installed in the upper housing, the mounting box and the interior of the lower housing, a sealing mechanism installed in the upper housing, a driven bevel gear fixed to the outer surface of the rotating rod and two pairs of through holes opened in the interior of the upper housing, wherein the upper housing comprises two opposite outer shells, and the driving bevel gear meshes with the driven bevel gear;

[0007] The support mechanism includes a first mounting groove opened inside the upper housing, a first support ring fixed in the first mounting groove, a first bearing seat fixed on the top side of the inner wall of the installation box, and a support assembly installed in the lower housing.

[0008] By adopting this technical solution, the rotating shaft, the driving bevel gear, the rotating rod and the driven bevel gear can be supported and can be easily disassembled.

[0009] Furthermore, the sealing mechanism includes a sliding groove opened inside the two opposite sides of the outer shells, a sealing gasket slidably connected inside the sliding groove, and an automatic adjustment component installed inside the upper shell.

[0010] By adopting this technical solution, the upper casing can be sealed after the sealing gasket shrinks due to cold.

[0011] Furthermore, the support assembly includes a second mounting groove provided inside the lower housing, a second support ring abutting against the second mounting groove, and a second bearing seat fixed on the top side of the second support ring.

[0012] By adopting this technical solution, the rotating rod can be stably installed in the lower housing and the installation box.

[0013] Furthermore, the automatic adjustment component includes a moving groove opened on one side of the sliding groove, a spring abutting against a side of the moving groove away from the sealing gasket, and a moving plate fixed to a side of the spring close to the sealing gasket.

[0014] By adopting this technical solution, the two sealing pads can be automatically abutted to achieve sealing.

[0015] Furthermore, the rotating shaft rotates in the first supporting ring, and the rotating rod rotates in the second supporting ring.

[0016] By adopting this technical solution, the first supporting ring and the second supporting ring are used to support the rotating shaft and the rotating rod respectively.

[0017] Furthermore, a placement groove is opened at the top of the inner wall of the installation box, the first bearing seat is fixed in the placement groove, and the rotating rod rotates in the first bearing seat and the second bearing seat.

[0018] By adopting this technical solution, the rotating rod can be easily rotated in the lower casing and the installation box.

[0019] Furthermore, the two sealing pads are in contact with each other at opposite sides, and the movable plate can move in the sliding groove.

[0020] By adopting this technical solution, the gear box can be sealed by using a sealing gasket.

[0021] Furthermore, two avoidance holes are provided inside the sealing gasket, and each avoidance hole corresponds to the position of its corresponding through hole.

[0022] By adopting this technical solution, the avoidance holes and the through holes are used to facilitate the passage of bolts when fixing the upper casing.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] The trimmer gear box assembly is provided with a support mechanism inside the upper casing, the mounting box and the lower casing, and can use the first support ring and the second support ring to support the rotating shaft and the rotating rod respectively. At the same time, the first support ring and the second support ring are easy to remove, so that the active bevel gear and the driven bevel gear are convenient to clean. By providing a sealing mechanism on the upper casing, the distance between the sealing gasket and the sliding groove can be adjusted according to the thickness of the sealing gasket itself, so that the seal can be maintained at different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the appearance structure of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the upper housing, through hole and sealing mechanism of the utility model;

[0028] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0029] In the figure: 1, upper housing; 2, mounting box; 3, lower housing; 4, rotating shaft; 5, driving bevel gear; 6, rotating rod; 700, supporting mechanism; 701, first mounting groove; 702, first supporting ring; 703, first bearing seat; 704, second mounting groove; 705, second supporting ring; 706, second bearing seat; 800, sealing mechanism; 801, sliding groove; 802, sealing gasket; 803, moving groove; 804, spring; 805, moving plate; 9, driven bevel gear; 10, through hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-4 A trimmer gearbox assembly in this embodiment includes an upper housing 1, an installation box 2 fixed to the right end of the upper housing 1, a lower housing 3 fixed to the bottom end of the installation box 2, a rotating shaft 4 rotatably connected to the interior of the upper housing 1, a driving bevel gear 5 fixed to the outer surface of the rotating shaft 4, a rotating rod 6 rotatably connected to the installation box 2 and the lower housing 3, a supporting mechanism 700 installed in the upper housing 1, the installation box 2 and the lower housing 3, a sealing mechanism 800 installed in the upper housing 1, a driven bevel gear 9 fixed to the outer surface of the rotating rod 6, and two pairs of through holes 10 opened in the upper housing 1, the upper housing 1 includes two opposite shells, and the driving bevel gear 5 is meshed with the driven bevel gear 9.

[0032] The rotating shaft 4 in this embodiment is used to drive the active bevel gear 5 to rotate. The active bevel gear 5 and the driven bevel gear 9 are used together to drive the rotating rod 6 to rotate. The supporting mechanism 700 is used to facilitate the installation of the rotating shaft 4, the active bevel gear 5, the driven bevel gear 9 and the rotating rod 6. The sealing mechanism 800 is used to seal the upper housing 1.

[0033] See also Figure 1-2In order to facilitate the cleaning of the active bevel gear 5 and the driven bevel gear 9, the support mechanism 700 in this embodiment includes a first mounting groove 701 opened in the upper housing 1, a first support ring 702 fixed in the first mounting groove 701, a first bearing seat 703 fixed on the top side of the inner wall of the installation box 2, and a support assembly installed in the lower housing 3. The support assembly includes a second mounting groove 704 opened in the lower housing 3, a second support ring 705 abutting against the second mounting groove 704, and a second bearing seat 706 fixed on the top side of the second support ring 705. The rotating shaft 4 rotates in the first support ring 702, and the rotating rod 6 rotates in the second support ring 705. A placement groove is opened at the top of the inner wall of the installation box 2, and the first bearing seat 703 is fixed in the placement groove. The rotating rod 6 rotates in the first bearing seat 703 and the second bearing seat 706.

[0034] The support mechanism 700 in this embodiment supports the rotating shaft 4 through the first support ring 702 and supports the rotating rod 6 through the second support ring 705. The first mounting groove 701 is used to facilitate the fixing of the first support ring 702 and the removal of the first mounting groove 701. The second mounting groove 704 is used to facilitate the fixing of the second support ring 705 and the removal of the second support ring 705.

[0035] It should be noted that the first bearing seat 703 and the second bearing seat 706 can support the rotating rod 6 to prevent the rotating rod 6 from falling under the action of gravity.

[0036] See also Figure 1 , Figure 3 and Figure 4 In order to achieve sealing at different temperatures, the sealing mechanism 800 in this embodiment includes a sliding groove 801 opened inside the opposite side of the two shells, a sealing gasket 802 slidably connected inside the sliding groove 801, and an automatic adjustment component installed inside the upper shell 1, the automatic adjustment component includes a moving groove 803 opened on one side of the sliding groove 801, a spring 804 abutting on the side of the moving groove 803 away from the sealing gasket 802, and a moving plate 805 is fixed on the side of the spring 804 close to the sealing gasket 802, the opposite sides of the two sealing gaskets 802 are abutted, the moving plate 805 can move in the sliding groove 801, and two avoidance holes are opened inside the sealing gasket 802, and each avoidance hole corresponds to the position of its corresponding through hole 10.

[0037] The sealing mechanism 800 in this embodiment can achieve sealing on the upper housing 1 by having two sealing gaskets 802 abut against each other. The spring 804 is used to adjust its own deformation degree according to the thickness of the sealing gasket 802, thereby ensuring that the two sealing gaskets 802 can abut against each other. The movable plate 805 is used to facilitate the movement of the sealing gasket 802.

[0038] It should be noted that the sliding groove 801 is used to facilitate the sliding of the sealing gasket 802 and the movable plate 805, and the avoidance hole is used to facilitate the installation of the bolt.

[0039] The working principle of the above embodiment is:

[0040] When the gearbox is put to work at a very low temperature, the sealing gasket 802 shrinks due to the cold, the thickness of the sealing gasket 802 becomes thinner, and the two sealing gaskets 802 separate from each other. At this time, the spring 804 recovers to a certain extent, and the spring 804 drives the moving plate 805 to move to the side close to the sealing gasket 802. The moving plate 805 drives the sealing gasket 802 to move together, and the two sealing gaskets 802 abut against each other again to achieve sealing of the upper housing 1. When it is necessary to clean the active bevel gear 5 and the driven bevel gear 9, remove one shell of the upper housing 1, and remove the first support ring 702, Take out the rotating shaft 4 and the active bevel gear 5 together, disassemble the lower casing 3, remove the rotating rod 6 from the first bearing seat 703, take out the second support ring 705, the rotating rod 6, the second bearing seat 706 and the driven bevel gear 9 together, clean the active bevel gear 5 and the driven bevel gear 9, install the rotating rod 6 into the first bearing seat 703, put the second support ring 705 into the second mounting groove 704, put the first support ring 702 into the first mounting groove 701, make the active bevel gear 5 mesh with the driven bevel gear 9, and install the upper casing 1 and the lower casing 3.

Claims

1. A trimmer gearbox assembly, characterized in that: The invention comprises an upper housing (1), a mounting box (2) fixed at the right end of the upper housing (1), a lower housing (3) fixed at the bottom end of the mounting box (2), a rotating shaft (4) rotatably connected to the interior of the upper housing (1), a driving bevel gear (5) fixed to the outer surface of the rotating shaft (4), a rotating rod (6) rotatably connected to the interior of the mounting box (2) and the lower housing (3), a supporting mechanism (700) installed inside the upper housing (1), the mounting box (2) and the lower housing (3), a sealing mechanism (800) installed inside the upper housing (1), a driven bevel gear (9) fixed to the outer surface of the rotating rod (6), and two pairs of through holes (10) provided inside the upper housing (1), wherein the upper housing (1) comprises two opposing outer shells, and the driving bevel gear (5) meshes with the driven bevel gear (9); The support mechanism (700) comprises a first installation groove (701) provided inside the upper housing (1), a first support ring (702) fixed in the first installation groove (701), a first bearing seat (703) fixed on the top side of the inner wall of the installation box (2), and a support assembly installed in the lower housing (3).

2. The trimmer gearbox assembly according to claim 1, characterized in that: The sealing mechanism (800) comprises a sliding groove (801) provided inside opposite sides of the two outer shells, a sealing gasket (802) slidably connected inside the sliding groove (801), and an automatic adjustment component installed inside the upper housing (1).

3. The trimmer gearbox assembly according to claim 1, characterized in that: The support assembly comprises a second mounting groove (704) provided inside the lower housing (3), a second support ring (705) abutting against the second mounting groove (704), and a second bearing seat (706) fixed on the top side of the second support ring (705).

4. The trimmer gearbox assembly according to claim 2, characterized in that: The automatic adjustment component comprises a movable groove (803) provided on one side of the sliding groove (801), a spring (804) abutting against a side of the movable groove (803) away from the sealing gasket (802), and a movable plate (805) fixed on a side of the spring (804) close to the sealing gasket (802).

5. The trimmer gearbox assembly according to claim 3, characterized in that: The rotating shaft (4) rotates in the first supporting ring (702), and the rotating rod (6) rotates in the second supporting ring (705).

6. The trimmer gearbox assembly according to claim 3, characterized in that: A placement groove is provided at the top end of the inner wall of the installation box (2), the first bearing seat (703) is fixed in the placement groove, and the rotating rod (6) rotates in the first bearing seat (703) and the second bearing seat (706).

7. The trimmer gearbox assembly according to claim 4, characterized in that: The two sealing pads (802) are in contact with each other at opposite sides, and the movable plate (805) can move in the sliding groove (801).

8. The trimmer gearbox assembly according to claim 4, characterized in that: Two avoidance holes are provided inside the sealing pad (802), and each avoidance hole corresponds to the position of its corresponding through hole (10).

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