Gearbox device for engineering machinery

Abstract

The utility model belongs to the technical field of engineering machinery, and particularly relates to a gearbox device for engineering machinery. According to the gearbox device for the engineering machinery, the lubricating oil cup, the oil pump, the oil conveying pipe, the limiting frame body unit, the cover body unit, the limiting ring unit and the inverted-U-shaped frame body unit are arranged on the box body, so that the lubricating oil cup has a cover sealing function, and silt and sewage are prevented from entering the lubricating oil cup; the lubricating oil cup, the oil pump and the oil conveying pipe can be stably installed on the box body and are not prone to falling off or being damaged by collision.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and in particular relates to a gearbox device for engineering machinery. Background Art

[0002] Common existing construction machinery includes excavators, shovels, cranes, and concrete mixers, etc. On the other hand, in order to achieve a stable and adjustable effect of various operations during the construction process, the above-mentioned construction machinery, like other common mechanical equipment, is generally equipped with various gearbox devices.

[0003] Generally, the structure of the gearbox device mainly includes a box, a gear set, and a lubricating oil circulation system. However, it should be noted that the use environment of construction machinery is more severe than that of general indoor and fixed machinery. The working conditions of the former include frequent vibrations, and inevitable mud, sand, and dust.

[0004] For example, a Chinese utility model patent with authorization announcement number CN220770081U and authorization announcement date 2024.04.12 discloses a gear housing for an engineering machinery gearbox, including a housing, a sealed housing door hinged on the left side of the housing, a gear set rotatably connected to the inside of the housing, and lubrication components are arranged on the inner and outer sides of the housing, the lubrication components include an oil storage cup, an oil dripping pipe, a suction pump, an oil receiving trough, a connecting pipe, a filter bottle and a filter screen.

[0005] The gearbox gear housing in this utility model patent has the following general structural principles and advantages: an oil storage cup, an oil dripping tube and a gear set are provided, and the oil dripping tube and the oil storage cup are placed directly above the gear set, so that the dripping lubricating oil can fall directly on the gear set, reducing the oil delivery structure and the cost of use, and with the help of the meshing inside the gear set, the lubricating oil can be quickly applied to the gears, thereby improving the user's oiling efficiency. At the same time, a scale observation window is provided on the oil storage cup, which is beneficial for the user to observe the use of the lubricating oil.

[0006] However, in actual use, the gear housing of the gearbox still has at least the following two shortcomings, which are also the technical problems to be solved by the present utility model, namely:

[0007] First, the oil storage cup structure lacks the necessary sealing function, which is very dangerous in dusty construction sites and can easily cause sand to accidentally enter the gearbox, eventually damaging the gearbox.

[0008] Second, the entire lubrication assembly is only installed and fixed by plugging, and lacks necessary protection functions. This is not applicable to engineering machinery that is frequently vibrated and shaken, and can easily cause the lubrication assembly to fall off or break.

[0009] Therefore, in summary, there is an urgent need for a new type of transmission device with a lubricating oil circulation system that has a capping function and a protective function for use in various construction machinery. Summary of the Invention

[0010] The utility model provides a transmission device for construction machinery, which can be such that by arranging a lubricating oil cup, an oil pump, an oil pipeline, a limiting frame body unit, a cover body unit, a limiting ring unit, and an inverted U-shaped frame body unit on a box body: 1. The lubricating oil cup has a capping function to prevent sediment and sewage from entering; 2. The lubricating oil cup, the oil pump, and the oil pipeline can be stably installed on the box body and are not easily dropped or damaged.

[0011] The technical solution adopted by the utility model to solve the above problems is: a transmission device for construction machinery, the structure of which includes a box body, a lubricating oil cup, an oil pump, and an oil pipeline, and further includes a limiting frame body unit arranged on the box body and sleeving the lubricating oil cup, a cover body unit arranged on the limiting frame body unit and used for capping the lubricating oil cup, a limiting ring unit arranged on the box body and used for clamping the oil pipeline, and an inverted U-shaped frame body unit arranged on the box body and used for covering the lubricating oil cup, the oil pump, and the oil pipeline.

[0012] A further preferred technical solution lies in that: the limiting frame body unit includes a limiting circular ring sleeved on the outer ring surface of the lubricating oil cup, and inclined connecting plates with two ends respectively arranged on the limiting circular ring and the box body.

[0013] A further preferred technical solution lies in that: the cover body unit includes a circular cover body arranged on the outer ring surface of the limiting circular ring and with the inner top surface capping the lubricating oil cup, and an air pressure balance hole arranged on the circular cover body.

[0014] A further preferred technical solution lies in that: the limiting ring unit includes an open circular ring sleeved on the oil pipeline, and two mounting inclined plates respectively arranged on both sides of the open position of the open circular ring and used for connecting the box body.

[0015] A further preferred technical solution lies in that: the inverted U-shaped frame body unit includes two elastic vertical plates arranged on the box body, and an elastic horizontal plate arranged on the two elastic vertical plates and used for covering the lubricating oil cup, the oil pump, and the oil pipeline.

[0016] A further preferred technical solution lies in that: the limiting frame body unit further includes an arc-shaped plate arranged on the outer ring surface of the limiting circular ring, connecting the inclined connecting plate, and used for blocking and positioning the circular cover body.

[0017] A further preferred technical solution is that: the inverted U-shaped frame unit further includes two side protection plates respectively arranged at two side positions on the elastic transverse plate.

[0018] A further preferred technical solution is that: the inner edge of the lower surface of the side protection plate is arranged on the inclined connecting plate and the mounting inclined plate.

[0019] A further preferred technical solution is that: the inverted U-shaped frame unit further includes an operation opening arranged on the side protection plate and used for disassembling and assembling the lubricating oil cup and the cover unit.

[0020] A further preferred technical solution is that: the inverted U-shaped frame unit further includes an oil injection hole arranged on the elastic transverse plate and used for adding lubricating oil into the lubricating oil cup when the cover unit is removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the present invention.

[0022] Figure 2 It is a schematic structural diagram of the box body in the present invention from a top view angle.

[0023] Figure 3 It is a schematic shape diagram of the oil pipeline in the present invention.

[0024] Figure 4 It is a schematic position structure diagram of the limit frame unit in the present invention.

[0025] Figure 5 It is a schematic position and shape diagram of the arc plate in the present invention from a top view angle.

[0026] Figure 6 It is a schematic structural diagram of the cover unit in the present invention.

[0027] Figure 7 It is a schematic structural diagram of the inverted U-shaped frame unit in the present invention from a top view angle.

[0028] Figure 8 It is a schematic diagram of the opening method of the cover unit in the present invention.

[0029] Figure 9 It is a schematic position structure diagram of the limit ring unit in the present invention.

[0030] Figure 10 It is a schematic diagram of the usage mode of the inclined connecting plate and the mounting inclined plate together supporting the side protection plate in the present invention.

[0031] In the figure, the meanings of the respective marks are as follows:

[0032] The box body 11, lubricating oil cup 12, oil pump 13, oil delivery pipe 14, cup mounting opening 15, pipe mounting hole 16, gear 17, box door 18;

[0033] Limit frame body unit 1, cover body unit 2, limit ring unit 3, inverted U-shaped frame body unit 4;

[0034] Limit circular ring 101, inclined connecting plate 102, circular cover body 201, air pressure balance hole 202, open circular ring 301, mounting inclined plate 302, elastic vertical plate 401, elastic horizontal plate 402, arc plate 103, side protection plate 403, operation port 404, oil injection hole 405. Specific implementation mode

[0035] The following is only the preferred embodiment of the present invention, and does not limit the scope of the present invention.

[0036] As shown in the appendix Figures 1-10 As shown, a transmission device for construction machinery includes a box body 11, a lubricating oil cup 12, an oil pump 13, and an oil delivery pipe 14. It further includes a limit frame body unit 1 provided on the box body 11 and sleeving the lubricating oil cup 12, a cover body unit 2 provided on the limit frame body unit 1 and used for covering the lubricating oil cup 12, a limit ring unit 3 provided on the box body 11 and used for clamping the oil delivery pipe 14, and an inverted U-shaped frame body unit 4 provided on the box body 11 and used for covering the lubricating oil cup 12, the oil pump 13, and the oil delivery pipe 14.

[0037] In this embodiment, the side of the box body 11 is open, and a box door 18 is hermetically fixed at the opening. A plurality of the gears 17 are installed in the box body 11 to achieve the basic "speed change" effect.

[0038] Among them, the lubricating oil cup 12, the oil pump 13, the oil delivery pipe 14, and the oil collecting groove on the inner bottom surface of the box body 11 together form a complete lubricating oil circulation system to ensure that all the gears 17 can be fully and continuously wetted by the oil as much as possible. Thus, the efficient speed change effect of this transmission device can operate stably for a long time.

[0039] In addition, the lubricating oil cup 12 is inserted into the cup mounting opening 15 and then limited and reinforced by the limit frame body unit 1, so that the lubricating oil cup 12 can be stably installed for a long time even on relatively bumpy construction machinery.

[0040] And the cover body unit 2 covers the upper end opening of the originally directly exposed lubricating oil cup 12, so that it is not easy for water and impurities to enter the lubricating oil cup 12, which is very necessary for construction machinery with a relatively harsh use environment.

[0041] In addition, the number of the oil pipelines 14 is generally two. One is arranged between the lubricating oil cup 12 and the oil pump 13 and is in a simple straight line shape, while the other is inserted into the pipe mounting hole 16 and connected to the oil pump 13, being in an "inverted L shape". The limiting ring unit 3 can be arranged on both of them, especially on the exposed part of the latter which is relatively large in size and more likely to shake.

[0042] On the other hand, in the way of the prior art, in the oil collecting groove on the inner bottom surface of the box body 11, a common limiting structure in the prior art can also be provided for the lower end of the latter oil pipeline, finally ensuring the stable installation of the above-mentioned "inverted L-shaped" oil pipeline. Therefore, correspondingly, the limiting ring unit 3 is only arranged on the upper surface of the box body 11.

[0043] Finally, there is the inverted U-shaped frame unit 4, whose main function is to prevent falling objects, downward deformation pressure and other factors from directly and significantly damaging the lubricating oil cup 12, the oil pump 13 and the oil pipeline 14, and this function is very necessary at the construction site.

[0044] Therefore, correspondingly, from the top view angle, the contour size of the inverted U-shaped frame unit 4 is relatively large and needs to completely cover the lubricating oil cup 12, the oil pump 13 and the oil pipeline 14.

[0045] The limiting frame unit 1 includes a limiting ring 101 sleeved on the outer ring surface of the lubricating oil cup 12, and inclined connecting plates 102 with two ends respectively arranged on the limiting ring 101 and the box body 11.

[0046] In this embodiment, the material of the box body 11 is cast iron, high-strength steel or aluminum alloy, and the material of the limiting frame unit 1 is metal or hard plastic, which is integrally formed and is screwed or welded to the upper surface of the box body 11 by the inclined connecting plate 102.

[0047] Among them, the number of the inclined connecting plates 102 is 2 - 5, and they are evenly spaced in the circumferential direction of the limiting ring 101, so as to fully fix the inclined connecting plates 102, and thus indirectly fully reinforce the lubricating oil cup 12, so that even if the construction machinery travels bumpily or shakes for a long time by itself, the lubricating oil cup 12 is not easy to loosen or fall off.

[0048] The cover unit 2 includes a circular cover 201 arranged on the outer ring surface of the limiting ring 101 and whose inner top surface covers the lubricating oil cup 12, and an air pressure balance hole 202 arranged on the circular cover 201.

[0049] In this embodiment, the material of the circular cover 201 is engineering plastic. In addition, the protruding height of the inverted U-shaped frame unit 4 on the upper surface of the box body 11 is determined by the following conditions:

[0050] First, when the inverted U-shaped frame unit 4 is not deformed by pressure, the inverted U-shaped frame unit 4 can block the circular cover 201 from accidentally loosening and rotating, so that even if the circular cover 201 is loose, it is not easy to fall off;

[0051] Second, when the operator actively presses and deforms the inverted U-shaped frame unit 4, the inverted U-shaped frame unit 4 needs to leave enough vertical space for the circular cover 201 for disassembly, assembly and replacement operations.

[0052] Therefore, in addition to the above-mentioned main functions, the second function of the inverted U-shaped frame unit 4 is to prevent the circular cover 201 from falling and being lost.

[0053] The limiting ring unit 3 includes an open circular ring 301 sleeved on the oil delivery pipe 14 , and two installation inclined plates 302 respectively arranged on both sides of the opening position of the open circular ring 301 and used to connect the box body 11 .

[0054] In this embodiment, the material of the opening ring 301 is elastic rubber, and the central angle corresponding to the opening position is 40°-70°, thereby achieving a sufficient oil pipeline sleeve connection effect and a suitable opening position difficulty.

[0055] The number of the limit ring units 3 is 2-10, and the paired installation inclined plates 302 are either screwed or welded to the upper surface of the box body 11. At this time, the above opening position faces downward, so that:

[0056] First, the oil delivery pipe 14 is not easy to shake and shift due to its relatively large size;

[0057] Second, the oil pipeline 14 can be stably installed even when facing a relatively small external impact.

[0058] The inverted U-shaped frame unit 4 includes two elastic vertical plates 401 arranged on the box body 11 , and an elastic horizontal plate 402 arranged on the two elastic vertical plates 401 and used for covering the lubricating oil cup 12 , the oil pump 13 and the oil delivery pipe 14 .

[0059] In this embodiment, the elastic vertical plate 401 and the elastic horizontal plate 402 are made of conventional rubber with medium elasticity, and have moderate structural strength, which can withstand relatively small external impacts, thereby protecting the lubricating oil cup 12 , the oil pump 13 and the oil pipeline 14 .

[0060] On the other hand, its elasticity is also moderate. When the lubricating oil cup 12 and / or the circular cover 201 need to be disassembled, pulling up the elastic transverse plate 402 upward can provide sufficient vertical operating space for the circular cover 201 and the lubricating oil cup 12.

[0061] When the transmission device is in normal use, the elastic transverse plate 402 can also block the loosening and falling path of the circular cover 201, so that the circular cover 201 can only loosen and is not easily dropped and lost.

[0062] Wherein, the elastic vertical plate 401 and the elastic transverse plate 402 are both rectangular in shape, and the length and width dimensions of the elastic transverse plate 402 are relatively large, so as to cover the lubricating oil cup 12, the oil pump 13 and the oil pipeline 14.

[0063] The limiting frame body unit 1 further includes an arc-shaped plate 103 arranged on the outer ring surface of the limiting ring 101, connecting the inclined connecting plate 102, and used for blocking and positioning the circular cover 201.

[0064] In this embodiment, the arc-shaped plate 103, the limiting ring 101 and the inclined connecting plate 102 are integrally formed, and its functions at least include the following two;

[0065] First, it provides a blocking and limiting function for the downward installation action of the circular cover 201 from top to bottom, to prevent it from being installed excessively downward. Otherwise, the own oil outlet pipe of the lubricating oil cup 12 will accidentally touch the gear 17, or even the entire lubricating oil cup 12 will enter the box body 11, which is very dangerous;

[0066] Second, it provides a transition area between the outer ring surface of the limiting ring 101 and the upper end of the inclined connecting plate 102, to avoid excessive stress concentration at this place and ensure that there is enough connection dimension at this connection.

[0067] Wherein, the circular cover 201 and the limiting ring 101 can be screwed or only sleeved, and the end point of the downward installation action of the circular cover 201 is that its lower surface abuts against the upper surface of the arc-shaped plate 103.

[0068] At this time, the inner top surface of the circular cover 201 can fully and appropriately press down and seal the lubricating oil cup 12.

[0069] The inverted U-shaped frame body unit 4 further includes two side protection plates 403 respectively arranged at both side positions on the elastic transverse plate 402.

[0070] In this embodiment, the side protection plate 403 is rectangular in shape and is integrally formed with the elastic vertical plate 401 and the elastic horizontal plate 402, mainly for blocking and protecting the sediment, sewage splashing from the side, and the lateral external impact force.

[0071] Among them, the upper side of the side protection plate 403 is integrally formed with the elastic horizontal plate 402, and its two end sides are not connected to the elastic vertical plate 401. Its lower side is appropriately pressed on the upper surface of the box body 11, so as to fully and appropriately block and protect the lubricating oil cup 12, the oil pump 13, and the oil delivery pipe 14.

[0072] So far, the shape of the inverted U-shaped frame unit 4 is similar to an inverted cuboid box, which can fully cover and protect the lubricating oil cup 12, the oil pump 13, and the oil delivery pipe 14.

[0073] The inner edge of the lower surface of the side protection plate 403 is arranged on the inclined connecting plate 102 and the mounting inclined plate 302.

[0074] In this embodiment, two side plate bodies of the inclined connecting plates 102 arranged in a circle and all the mounting inclined plates 302 together abut against the inner edge of the lower surface of the side protection plate 403, so as to further improve the lateral protection strength of the side protection plate 403.

[0075] Correspondingly, at this time, the inclined connecting plate 102 and the mounting inclined plate 302 need to appropriately increase their own sizes or increase the inclination degree, so as to fully abut against the inner edge of the lower surface of the side protection plate 403. For details, please refer to the appendix Figure 10 .

[0076] The inverted U-shaped frame unit 4 further includes an operation opening 404 provided on the side protection plate 403 and used for disassembling and assembling the lubricating oil cup 12 and the cover unit 2.

[0077] In this embodiment, the operation opening 404 is located on the side protection plate 403 close to the lubricating oil cup 12. The operator can perform disassembly, assembly, taking and placing operations on the lubricating oil cup 12 and the cover unit 2 at the operation opening 404.

[0078] If there is no operation opening 404, when disassembling, assembling, taking and placing the lubricating oil cup 12 and the cover unit 2, it is necessary to greatly bend and deform the elastic vertical plate 401, the elastic horizontal plate 402, and the side protection plate 403, which is very laborious and troublesome, and will shorten the effective service life of the inverted U-shaped frame unit 4. Therefore, conversely, this is the function of the operation opening 404.

[0079] The inverted U-shaped frame unit 4 further includes an oil injection hole 405 which is arranged on the elastic transverse plate 402 and is used for adding lubricating oil into the lubricating oil cup 12 when the cover unit 2 is removed.

[0080] In this embodiment, after the circular cover 201 is removed, the operation of adding or supplementing lubricating oil can be carried out at the lubricating oil cup 12. At this time, although there is a certain vertical interval distance between the lubricating oil cup 12 and the elastic transverse plate 402, the method of adding lubricating oil at this place is still relatively troublesome.

[0081] Therefore, conversely, this is the function of the oil injection hole 405. The position of the oil injection hole 405 is aligned with the cup mounting opening 15 to ensure that the operation of adding lubricating oil is convenient enough.

[0082] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various modifications can be made without departing from the purpose of the present utility model. These are all non-creative modifications and are protected by the patent law as long as they are within the scope of the claims of the present utility model.

Claims

1. A gearbox device for construction machinery, the structure comprising a box body (11), a lubricating oil cup (12), an oil pump (13), and an oil delivery pipe (14), characterized in that: It further includes a limiting frame unit (1) arranged on the box body (11) and sleeving the lubricating oil cup (12), a cover unit (2) arranged on the limiting frame unit (1) and used for covering the lubricating oil cup (12), a limiting ring unit (3) arranged on the box body (11) and used for clamping the oil delivery pipe (14), and an inverted U-shaped frame unit (4) arranged on the box body (11) and used for covering the lubricating oil cup (12), the oil pump (13) and the oil delivery pipe (14).

2. The transmission device for construction machinery according to claim 1, characterized in that: The limiting frame unit (1) includes a limiting ring (101) sleeved on the outer ring surface of the lubricating oil cup (12), and an inclined connecting plate (102) with two ends respectively arranged on the limiting ring (101) and the box body (11).

3. The transmission device for construction machinery according to claim 2, wherein: The cover unit (2) includes a circular cover body (201) arranged on the outer ring surface of the limiting ring (101) and with its inner top surface covering the lubricating oil cup (12), and an air pressure balance hole (202) arranged on the circular cover body (201).

4. A transmission device for construction machinery according to claim 2, characterized in that: The limiting ring unit (3) includes an open ring (301) sleeved on the oil delivery pipe (14), and two mounting inclined plates (302) respectively arranged on both sides of the open position of the open ring (301) and used for connecting the box body (11).

5. The transmission device for construction machinery according to claim 4, characterized in that: The inverted U-shaped frame unit (4) includes two elastic vertical plates (401) arranged on the box body (11), and an elastic horizontal plate (402) arranged on the two elastic vertical plates (401) and used for covering the lubricating oil cup (12), the oil pump (13) and the oil delivery pipe (14).

6. A transmission device for construction machinery according to claim 3, characterized in that: The limiting frame unit (1) further includes an arc plate (103) arranged on the outer ring surface of the limiting ring (101), connecting the inclined connecting plate (102) and used for blocking and positioning the circular cover body (201).

7. A transmission device for construction machinery according to claim 5, characterized in that: The inverted U-shaped frame unit (4) further includes two side protection plates (403) respectively arranged at both side positions of the elastic horizontal plate (402).

8. A transmission device for construction machinery according to claim 7, characterized in that: The inner edge of the lower surface of the side protection plate (403) is arranged on the inclined connecting plate (102) and the mounting inclined plate (302).

9. A transmission device for construction machinery according to claim 7, characterized in that: The inverted U-shaped frame unit (4) further includes an operation port (404) arranged on the side protection plate (403) and used for disassembling and assembling the lubricating oil cup (12) and the cover unit (2).

10. A transmission device for construction machinery according to claim 5, characterized in that: The inverted U-shaped frame unit (4) further includes an oil injection hole (405) arranged on the elastic horizontal plate (402) and used for adding lubricating oil into the lubricating oil cup (12) when the cover unit (2) is removed.

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