Gearbox shell

Abstract

The utility model provides a gearbox shell, and belongs to the technical field of gearboxes. The gearbox shell solves the problem that in the prior art, a gearbox shell is not provided with a reverse gear shaft installation device. The device comprises a lower box body and an upper cover body, the lower box body is of a box body structure with an opening in one side, an installation ring is formed at the upper end of the lower box body, a plurality of installation convex bodies are formed in the installation ring, the lower end of the upper cover body is attached to the upper end face of the installation ring, and fastening bolts are fixed to the periphery of the upper cover body and the installation convex bodies in a penetrating mode. A reverse gear window and a power takeoff gear window are formed in the left side and the right side of the interior of the lower box body respectively, a reverse gear cover and a power takeoff gear cover are fixedly installed on the outer side of the reverse gear window and the outer side of the power takeoff gear window respectively, and a first reverse gear shaft fixing cylinder and a reverse gear shaft fixing body are formed on the two sides of the interior of the reverse gear window respectively. A second reverse gear shaft fixing cylinder is formed on one side of the reverse gear shaft fixing cylinder, and reverse gear shaft fixing holes are formed in the first reverse gear shaft fixing cylinder, the second reverse gear shaft fixing cylinder and the reverse gear shaft fixing body. The utility model has the advantage that the reverse gear shaft is stably installed.

Description

Technical Field

[0001] This utility model belongs to the field of gearbox technology and relates to a gearbox housing. Background Technology

[0002] The gearbox housing seals the internal parts of the gearbox in a relatively stable space, preventing dust, moisture and other impurities from entering and avoiding corrosion and damage to the parts from the external environment.

[0003] Chinese patent publication number CN206637006U discloses a gearbox housing, including a clutch housing and a gearbox made of ductile iron. The gearbox has a first bearing hole, a second bearing hole, a third bearing hole and a fourth bearing hole. The first bearing hole and the third bearing hole are the same size. The center line connecting the first bearing hole and the third bearing hole is on a straight line and is also on a straight line with the central axis of the clutch housing. The center lines of the second bearing hole and the fourth bearing hole coincide. Four first bolt holes are evenly arranged around the third bearing hole. Two second bolt holes are arranged on the left and right sides of the second bearing hole, respectively.

[0004] The patent provides a gearbox housing that lacks a structure for mounting a reverse gear shaft, which can easily lead to gear slippage during actual use. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a gearbox housing.

[0006] The objective of this utility model can be achieved through the following technical solution: A gearbox housing includes a lower housing and an upper cover. The lower housing is a housing structure with an opening on one side, and a mounting ring is formed at the upper end of the lower housing. Several mounting protrusions are formed in the mounting ring. The lower end of the upper cover fits against the upper surface of the mounting ring. Fastening bolts are inserted and fixed through the outer periphery of the upper cover and the mounting protrusions. A reverse gear window and a power take-off gear window are respectively opened on the left and right sides inside the lower housing. A reverse gear cover and a power take-off gear cover are respectively fixedly installed on the outer sides of the reverse gear window and the power take-off gear window. The power take-off gear cover has a first reverse gear shaft fixing cylinder and a reverse gear shaft fixing body formed on both sides of the reverse gear window. A second reverse gear fixing cylinder is formed on one side of the reverse gear shaft fixing cylinder. A reverse gear shaft fixing hole is provided in the first reverse gear shaft fixing cylinder, the second reverse gear fixing cylinder, and the reverse gear shaft fixing body. A first shaft hole and a second shaft hole are provided on the front and rear sides of the lower housing, respectively. A first bearing cover is fixedly connected to the lower housing outside the first shaft hole, and a second bearing cover is fixedly connected to the lower housing outside the second shaft hole. A speed control lever support is formed in the upper cover.

[0007] In one of the aforementioned gearbox housings, the lower housing on the outer side of the reverse gear shaft fixing cylinder is integrally formed with a mounting base.

[0008] In one of the aforementioned gearbox housings, several first protrusions and second protrusions are respectively formed at the edges of the reverse gear window and the power take-off gear window.

[0009] In one of the aforementioned gearbox housings, a vent plug is formed on the surface of the lower housing.

[0010] In one of the aforementioned gearbox housings, connecting plates are formed on both sides of the lower housing.

[0011] Compared with the prior art, the gearbox housing provided by this utility model has the following beneficial effects: 1. By setting a first reverse gear shaft fixing cylinder, a second reverse gear fixing cylinder, and a reverse gear shaft fixing body, and opening a reverse gear shaft fixing hole therein, a stable and precise installation and positioning structure is provided for the reverse gear shaft, which can effectively limit the displacement and shaking of the reverse gear shaft during operation, ensure that the reverse gear always maintains a good meshing state, and reduce the risk of disengagement; 2. The reverse gear cover and the power take-off gear cover are fixedly installed on the outside of the reverse gear window and the power take-off gear window, respectively, and several first protrusions and second protrusions are formed at the edge of the gear window, respectively. The setting of the first protrusions and second protrusions increases the connection strength and positioning accuracy between the reverse gear cover and the power take-off gear cover and the lower housing, effectively preventing the gear cover from loosening or displacing during the operation of the gearbox. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the lower box.

[0015] In the diagram: 1. Lower housing; 11. Mounting ring; 12. Mounting protrusion; 13. Reverse gear window; 131. First boss; 14. Power take-off gear window; 141. Second boss; 15. First reverse gear shaft fixing sleeve; 16. Reverse gear shaft fixing body; 161. Mounting seat; 17. Second reverse gear fixing sleeve; 18. Reverse gear shaft fixing hole; 19. First shaft hole; 10. Second shaft hole; 2. Upper cover; 21. Speed ​​control lever support; 3. Fastening bolt; 4. Reverse gear cover; 5. Power take-off gear cover; 6. First bearing cover; 7. Second bearing cover; 8. Breath plug; 9. Connecting plate. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figures 1 to 3As shown, this embodiment consists of a lower housing 1 and an upper cover 2. The lower housing 1 is a housing structure with an opening on one side. A mounting ring 11 is formed at the upper end of the lower housing 1. Several mounting protrusions 12 are formed in the mounting ring 11 and are evenly distributed along the mounting ring 11. The lower end of the upper cover 2 is in contact with the upper end face of the mounting ring 11. Fastening bolts 3 are inserted and fixed through the outer periphery of the upper cover 2 and the mounting protrusions 12. The fastening bolts 3 achieve a stable connection between the lower housing 1 and the upper cover 2, ensuring the overall sealing of the gearbox housing.

[0018] like Figures 1 to 3 As shown, a reverse gear window 13 and a power take-off gear window 14 are respectively opened on the left and right sides of the lower housing 1. A reverse gear cover 4 and a power take-off gear cover 5 are respectively fixedly installed on the outside of the reverse gear window 13 and the power take-off gear window 14 to protect the internal gear structure. Several first protrusions 131 and second protrusions 141 are formed at the edges of the reverse gear window 13 and the power take-off gear window 14. The first protrusions 131 and the second protrusions 141 are used to install bolts, which improves the connection strength and positioning accuracy.

[0019] like Figures 2 to 3 As shown, a first reverse gear shaft fixing cylinder 15 and a reverse gear shaft fixing body 16 are formed on both sides inside the reverse gear window 13, and a second reverse gear fixing cylinder 17 is formed on one side of the reverse gear shaft fixing cylinder. Reverse gear shaft fixing holes 18 are provided in the first reverse gear shaft fixing cylinder 15, the second reverse gear fixing cylinder 17 and the reverse gear shaft fixing body 16 to provide multi-directional fixed support for the reverse gear shaft and ensure its installation stability.

[0020] like Figures 1 to 3 As shown, the lower housing 1 has a first shaft hole 19 and a second shaft hole 10 on its front and rear sides, respectively. A first bearing cover 6 is fixedly connected to the lower housing 1 outside the first shaft hole 19, and a second bearing cover 7 is fixedly connected to the lower housing 1 outside the second shaft hole 10. The bearing covers are used to fix and protect the ends of the shaft parts, ensuring the smooth operation of the shaft.

[0021] To elaborate further, such as Figures 1 to 3 As shown, the lower housing 1 on the outer side of the reverse gear shaft fixing cylinder is integrally formed with a mounting base 161, which is used to provide an installation position for the fixing component that fixes the reverse gear shaft.

[0022] To elaborate further, such as Figures 1 to 3 As shown, a vent plug 8 is formed on the surface of the lower housing 1. The vent plug 8 can balance the air pressure inside the gearbox housing and the outside, and prevent excessive internal pressure from affecting the normal operation of the parts.

[0023] To elaborate further, such as Figures 1 to 3 As shown, connecting plates 9 are formed on both sides of the lower housing 1. The connecting plates 9 facilitate the overall installation of this embodiment with other equipment, improving the convenience and stability of installation.

[0024] To elaborate further, such as Figure 1 As shown, a speed control lever support 21 is formed in the upper cover 2. The speed control lever support 21 provides a reliable support point for the installation of the speed control lever, ensuring the accuracy of the speed control operation.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0026] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A gearbox housing, comprising a lower housing (1) and an upper cover (2), characterized in that: The lower housing (1) is a box structure with an opening on one side, and a mounting ring (11) is formed at the upper end of the lower housing (1). Several mounting protrusions (12) are formed in the mounting ring (11). The lower end of the upper cover (2) is in contact with the upper end face of the mounting ring (11). Fastening bolts (3) are fixed through the outer periphery of the upper cover (2) and the mounting protrusions (12). The lower housing (1) has a reverse gear window (13) and a power take-off gear window (14) on the left and right sides respectively. The reverse gear window (13) and the power take-off gear window (14) are fixedly installed on the outer sides of the reverse gear window (13) and the power take-off gear window (14) respectively. The reverse gear window (13) has a reverse gear cover (4) and a power take-off gear cover (5) on the outer sides respectively. The reverse gear window (13) has a reverse gear cover (4) and a power take-off gear cover (5) on the inner sides respectively. A first reverse gear shaft fixing cylinder (15) and a reverse gear shaft fixing body (16) are formed. A second reverse gear fixing cylinder (17) is formed on one side of the reverse gear shaft fixing cylinder. A reverse gear shaft fixing hole (18) is opened in the first reverse gear shaft fixing cylinder (15), the second reverse gear fixing cylinder (17) and the reverse gear shaft fixing body (16). A first shaft hole (19) and a second shaft hole (10) are opened on the front and rear sides of the lower housing (1) respectively. A first bearing cover (6) is fixedly connected to the lower housing (1) outside the first shaft hole (19). A second bearing cover (7) is fixedly connected to the lower housing (1) outside the second shaft hole (10). A speed regulating rod support (21) is formed in the upper cover (2).

2. A gearbox housing according to claim 1, characterized in that: The lower housing (1) on the outside of the reverse gear shaft fixing cylinder is integrally formed with a mounting base (161).

3. A gearbox housing according to claim 1, characterized in that: Several first protrusions (131) and second protrusions (141) are respectively formed at the edges of the reverse gear window (13) and the power take-off gear window (14).

4. A gearbox housing according to claim 1, characterized in that: A vent plug (8) is formed on the surface of the lower housing (1).

5. A gearbox housing according to claim 1, characterized in that: Connecting plates (9) are formed on both sides of the lower housing (1).

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