Gearbox protection device

Abstract

The utility model relates to the technical field of excavator accessory machining, and discloses a gearbox protection device which comprises a vehicle frame right side beam and a vehicle frame left side beam, and a first protection plate extending towards the lower portion of the vehicle frame left side beam is arranged on the lower end face of the vehicle frame right side beam. A second protection plate fixed to the inner end face of the frame left side beam in the vertical direction is arranged at the end, close to the frame left side beam, of the first protection plate, a reinforcing mechanism fixed to the lower bottom face of the frame left side beam is arranged on the outer end face of the second protection plate, and the first protection plate is provided with a heat dissipation opening and an oil pipe notch. The gearbox protection device is simple in structure, stable in structure and not prone to deformation, the gearbox can be effectively protected against collision and abrasion of external objects through the first protection plate and the second protection plate, the stability of the second protection plate can be further enhanced through the reinforcing mechanism, and the protection performance of the second protection plate is improved; and a heat dissipation opening and an oil pipe notch are formed in the first protection plate, so that heat dissipation of the gearbox and flowing of lubricating oil are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator parts processing, in particular to a gearbox protection device with low manufacturing cost and strong stability. Background Art

[0002] At present, the structure of the gearbox protection device of the excavator is relatively simple and the manufacturing cost is high. The existing protection devices usually adopt simple structural designs, such as flat or raised types. These simple structural designs often cannot meet the complex actual working environment requirements. In the working environment of the excavator, such as construction sites, mines, etc., it is necessary to face various harsh conditions, such as dust, stones, high and low temperatures, etc. Therefore, it is very necessary to improve the durability and impact resistance of the protective device at the bottom of the gearbox.

[0003] The existing excavator gearbox protection device has a relatively simple structural design and cannot meet the needs of complex working environments. The material and process costs involved in the production process of the protection device are high, which is not conducive to reducing production costs. At the same time, the protection device is prone to wear and damage in harsh working environments and cannot effectively resist external impacts, which can easily cause damage to the gearbox. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model discloses a gearbox protection device, including a right side beam of a frame and a left side beam of a frame, and its structural characteristics are that a first protective plate extending toward the lower side of the left side beam of the frame is provided on the lower end surface of the right side beam of the frame, a second protective plate fixed to the inner end surface of the left side beam of the frame in a vertical direction is provided on one end of the first protective plate close to the left side beam of the frame, a reinforcement mechanism fixed to the lower bottom surface of the left side beam of the frame is provided on the outer end surface of the second protective plate, and the first protective plate is provided with a heat dissipation port and an oil pipe notch.

[0005] After adopting the above structure, by arranging a first protective plate extending toward the lower side of the left side beam of the frame on the lower end surface of the right side beam of the frame, and arranging a second protective plate fixed to the inner end surface of the left side beam of the frame in the vertical direction at one end of the first protective plate close to the left side beam of the frame, the gearbox can be effectively protected from collision and wear by external objects, and by arranging a reinforcement mechanism fixed to the lower bottom surface of the left side beam of the frame on the outer end surface of the second protective plate, the stability of the second protective plate can be further enhanced and its protective performance can be improved, and the first protective plate is provided with a heat dissipation port and an oil pipe notch, which is beneficial to the heat dissipation of the gearbox and the flow of lubricating oil, thereby ensuring the normal operation of the gearbox.

[0006] Preferably, the first protective plate is a bent plate body formed by integrally processing and bending a rectangular plate, and includes a first bent portion arranged in the horizontal direction and fitted on the lower end surface of the right side beam of the frame, and a second bent portion arranged obliquely to the left at the left end of the first bent portion, and also includes a third bent portion extending to the left in the horizontal direction at the lower end of the second bent portion, and the extended end of the third bent portion is provided with a fourth bent portion in the vertical direction, and two first mounting holes are arranged at intervals along the width of the plate body on the first bent portion, and two second mounting holes are arranged at intervals along the width of the plate body on the fourth bent portion. Through multiple bends of the first protective plate, it can perfectly match with the bottom of the gearbox and effectively play a protective role.

[0007] Preferably, positioning strips perpendicular to the plate are provided on the front and rear end edges of the third bending portion and the front and rear side edges of the lower portion of the second bending portion along the length direction of each edge. The positioning strips can facilitate the installation of the gearbox and play a limiting role.

[0008] Preferably, the heat dissipation port is arranged at the middle position of the third bending portion and along the length direction of the third bending portion, and the oil pipe notch is arranged at the front edge of the third bending portion. By arranging the heat dissipation port and the oil pipe notch on the first protective plate, it is beneficial to the heat dissipation of the gearbox and the flow of lubricating oil, thereby ensuring the normal operation of the gearbox and improving the safety and stability of vehicle driving.

[0009] Preferably, the second protective plate is a rectangular plate body whose width is adapted to the width of the first protective plate body, and a connecting plate body which is perpendicular to the plate body and turned outward to the left is provided on the upper part of the rectangular plate body, and two third mounting holes are arranged at intervals along the width direction on the connecting plate body, and two fourth mounting holes connected to the first protective plate are arranged at intervals along the width direction of the plate body on the lower part of the second protective plate.

[0010] Preferably, the reinforcement mechanism includes two reinforcing ribs vertically arranged on the outer end surface of the second guard plate in the vertical direction, the two reinforcing ribs are arranged at intervals along the width direction of the second guard plate, the reinforcing ribs are triangular plates, and the inner bottom edges of the reinforcing ribs are welded to the outer end surface of the second guard plate, and the lower sides of the two reinforcing ribs are provided with connecting plates obliquely fixed on the outer end surface of the second guard plate, and the inner end surface of the connecting plate is vertically connected to the lower sides of the two reinforcing ribs. By arranging a reinforcing mechanism fixed on the outer end surface of the second guard plate and fixed on the lower bottom surface of the left side beam of the frame, the stability of the second guard plate can be further enhanced and its protective performance can be improved.

[0011] Preferably, the connecting plate is a rectangular plate body and the lower end is arranged to fit the second protective plate, the upper end of the connecting plate is bent in the horizontal direction and two fifth mounting holes are spaced apart along the width direction of the plate body.

[0012] In summary, the beneficial effects of the utility model are as follows: the utility model has a simple structure, a stable structure and is not easy to deform. By arranging a first protective plate extending to the lower side of the left side beam of the frame on the lower end surface of the right side beam of the frame, and arranging a second protective plate fixed to the inner end surface of the left side beam of the frame in a vertical direction at one end of the first protective plate close to the left side beam of the frame, the gearbox can be effectively protected from collision and wear of external objects. By arranging a reinforcement mechanism fixed to the lower bottom surface of the left side beam of the frame on the outer end surface of the second protective plate, the stability of the second protective plate can be further enhanced and its protective performance can be improved. The heat dissipation port and the oil pipe notch are arranged on the first protective plate, which is beneficial to the heat dissipation of the gearbox and the flow of lubricating oil, thereby ensuring the normal operation of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model installed on a vehicle frame and matched with a gearbox.

[0015] In the figure: 1. right side beam of the frame; 2. left side beam of the frame; 3. first protective plate; 4. second protective plate; 5. reinforcement mechanism; 6. heat dissipation port; 7. oil pipe notch; 8. first bending portion; 9. second bending portion; 10. third bending portion; 11. fourth bending portion; 12. first mounting hole; 13. second mounting hole; 14. positioning strip; 15. connecting plate; 16. third mounting hole; 17. fourth mounting hole; 18. reinforcing rib plate; 19. connecting plate; 20. fifth mounting hole. DETAILED DESCRIPTION

[0016] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0018] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0019] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0021] like Figure 1 and 2 As shown, the utility model comprises a right side beam 1 of the frame and a left side beam 2 of the frame, a first protective plate 3 extending to the lower side of the left side beam 2 of the frame is provided on the lower end surface of the right side beam 1 of the frame, and a second protective plate 4 fixed to the inner end surface of the left side beam 2 of the frame in a vertical direction is provided at one end of the first protective plate 3 close to the left side beam 2 of the frame. When designed, the first protective plate 3 is a bent plate body formed by integrally bending a rectangular plate and comprises a first bent portion 8 arranged in a horizontal direction and fitted on the lower end surface of the right side beam 1 of the frame and a second bent portion 8 located at the first bent portion 8 has a second bent portion 9 which is tilted obliquely to the left at the left end, and also includes a third bent portion 10 which is located at the lower end of the second bent portion 9 and extends to the left along the horizontal direction. A fourth bent portion 11 is provided along the vertical direction at the extended end of the third bent portion 10. During manufacturing, two first mounting holes 12 are provided on the first bent portion 8 along the width of the plate body, and two second mounting holes 13 are provided on the fourth bent portion 11 along the width of the plate body. In this way, the multiple bends of the first protective plate 3 can perfectly match with the bottom of the gearbox and effectively play a protective role.

[0022] like Figure 1 and Figure 2As shown, in a preferred embodiment of the utility model, the second guard plate 4 is a rectangular plate whose width is adapted to the width of the first guard plate 3, and a connecting plate 15 which is perpendicular to the plate and turned outward to the left is provided on the upper part of the rectangular plate. During design, two third mounting holes 16 are provided at intervals along the width direction on the connecting plate 15, and two fourth mounting holes 17 connected to the first guard plate 3 are provided at intervals along the width direction of the plate on the lower part of the second guard plate 4. A strip-shaped connecting base is usually provided on the inner end face of the left side beam 2 of the frame, and the second guard plate 4 is fixed to the inner end face of the left side beam 2 of the frame at the two third mounting holes 16 by fixing bolts, so that the frame structure is formed by the cooperation of the second guard plate 4 and the first guard plate 3, which can effectively protect the gearbox from collision and wear of external objects.

[0023] like Figure 2 As shown, in another preferred embodiment of the utility model, a reinforcing mechanism 5 fixed to the lower bottom surface of the left side beam 2 of the frame is provided on the outer end surface of the second guard plate 4, and the reinforcing mechanism 5 includes two reinforcing rib plates 18 vertically arranged on the outer end surface of the second guard plate 4 in the vertical direction, and the two reinforcing rib plates 18 are arranged at intervals along the width direction of the second guard plate 4. When designed, the reinforcing rib plates 18 are triangular plate bodies and the inner bottom edges of the reinforcing rib plates 18 are welded to the outer end surface of the second guard plate 4, and the lower sides of the two reinforcing rib plates 18 are provided with connecting plates 19 obliquely fixed to the outer end surface of the second guard plate 4. In the figure, the inner end surface of the connecting plate 19 is vertically connected to the lower side edges of the two reinforcing rib plates 18. When manufactured, the connecting plate 19 is a rectangular plate body and the lower end is arranged in contact with the second protective plate 4. The upper end of the connecting plate 19 is bent in the horizontal direction and two fifth mounting holes 20 are arranged at intervals along the width direction of the plate body. The connecting plate 19 can be fixed to the lower bottom surface of the left side beam 2 of the frame by fixing bolts at the two fifth mounting holes 20. In this way, by arranging a reinforcement mechanism 5 fixed to the lower bottom surface of the left side beam 2 of the frame on the outer end surface of the second protective plate 4, the stability of the second protective plate 4 can be further enhanced and its protective performance can be improved.

[0024] like Figure 2As shown, in a specific embodiment of the utility model, a heat dissipation port 6 and an oil pipe notch 7 are provided on the first protective plate 3. When designing, the heat dissipation port 6 is arranged at the middle position of the above-mentioned third bending portion 10 and is arranged along the length direction of the third bending portion 10, while the oil pipe notch 7 is arranged at the position of the front side edge of the third bending portion 10. In this way, by arranging the heat dissipation port 6 and the oil pipe notch 7 on the first protective plate 3, it is beneficial to the heat dissipation of the gearbox and the flow of lubricating oil, thereby ensuring the normal operation of the gearbox and improving the safety and stability of vehicle driving; when manufacturing, positioning strips 14 perpendicular to the plate body are arranged on the front and rear end edges of the third bending portion 10 and the front and rear side edges of the lower part of the second bending portion 9 along the length direction of each edge. The arrangement of the positioning strips 14 can facilitate the installation of the gearbox and play a limiting role.

[0025] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A gearbox protection device, comprising a right side beam (1) of a vehicle frame and a left side beam (2) of a vehicle frame, characterized in that: A first protective plate (3) extending downwardly from the left side beam (2) of the frame is disposed on the lower end surface of the right side beam (1) of the frame; a second protective plate (4) fixed to the inner end surface of the left side beam (2) of the frame in a vertical direction is disposed at one end of the first protective plate (3) close to the left side beam (2) of the frame; a reinforcing mechanism (5) fixed to the lower bottom surface of the left side beam (2) of the frame is disposed on the outer end surface of the second protective plate (4); and the first protective plate (3) is provided with a heat dissipation port (6) and an oil pipe notch (7).

2. The gearbox protection device according to claim 1, characterized in that: The first protective plate (3) is a bent plate body formed by bending a rectangular plate through integral processing, and comprises a first bent portion (8) arranged in a horizontal direction and fitted on the lower end surface of the right side beam (1) of the frame, and a second bent portion (9) arranged at the left end of the first bent portion (8) and inclined to the left, and further comprises a third bent portion (10) extending to the left in a horizontal direction at the lower end of the second bent portion (9), wherein a fourth bent portion (11) is arranged in a vertical direction at an extended end of the third bent portion (10), two first mounting holes (12) are arranged at intervals along the width of the plate body on the first bent portion (8), and two second mounting holes (13) are arranged at intervals along the width of the plate body on the fourth bent portion (11).

3. The gearbox protection device according to claim 2, characterized in that: Positioning strips (14) perpendicular to the plate body are provided on the front and rear end edges of the third bent portion (10) and the front and rear side edges of the lower portion of the second bent portion (9) along the length direction of each edge.

4. The gearbox protection device according to claim 2, characterized in that: The heat dissipation opening (6) is arranged at a middle position of the third bent portion (10) and along the length direction of the third bent portion (10), and the oil pipe notch (7) is arranged at a position on the front edge of the third bent portion (10).

5. The gearbox protection device according to claim 1, characterized in that: The second protective plate (4) is a rectangular plate body whose width is adapted to the width of the first protective plate (3), and a connecting plate body (15) which is perpendicular to the plate body and turns leftward is arranged on the upper part of the rectangular plate body, two third mounting holes (16) are arranged at intervals along the width direction on the connecting plate body (15), and two fourth mounting holes (17) connected to the first protective plate (3) are arranged at intervals along the width direction of the plate body on the lower part of the second protective plate (4).

6. The gearbox protection device according to claim 1, characterized in that: The reinforcement mechanism (5) comprises two reinforcing rib plates (18) arranged perpendicularly on the outer end surface of the second protective plate (4) in the vertical direction. The two reinforcing rib plates (18) are arranged at intervals along the width direction of the second protective plate (4). The reinforcing rib plates (18) are triangular plates and the inner bottom edges of the reinforcing rib plates (18) are welded to the outer end surface of the second protective plate (4). The lower sides of the two reinforcing rib plates (18) are provided with connecting plates (19) obliquely fixed to the outer end surface of the second protective plate (4). The inner end surface of the connecting plate (19) is perpendicularly connected to the lower sides of the two reinforcing rib plates (18).

7. The gearbox protection device according to claim 6, characterized in that: The connecting plate (19) is a rectangular plate body and the lower end is arranged to fit the second protective plate (4). The upper end of the connecting plate (19) is bent in the horizontal direction and two fifth mounting holes (20) are arranged at intervals in the width direction of the plate body.

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