Rotary reduction gearbox of crawler-type hydraulic drilling machine

Abstract

The utility model relates to the technical field of speed reducers, in particular to a rotary speed reduction box of a crawler-type hydraulic drilling machine, which comprises a rotary speed reduction box body, avoiding holes are arranged at the left end and the right end of the outer wall of the rotary speed reduction box body, and an arc-shaped mounting plate is arranged on the outer wall of the rotary speed reduction box body. The positions, close to the two ends, of the outer wall of the arc-shaped mounting plate are both provided with internal threaded pipes, the two internal threaded pipes are both in threaded connection with external threaded air guide pipes, the ends of the external threaded air guide pipes penetrate through the receding holes into the rotary reduction gearbox body, the outer ends of the two external threaded air guide pipes are both provided with air guide hoses, and the outer wall of the arc-shaped mounting plate is provided with a fixing support. And a heat exchange piece is arranged on the fixed bracket. According to the rotary reduction gearbox of the crawler-type hydraulic drilling machine, through the design of the external thread air guide pipe, the air guide hose and the heat exchange piece, airflow circulation can be formed in the box body, and the active heat dissipation design is beneficial to rapidly and effectively taking away heat generated in the box body and reducing the temperature in the rotary reduction gearbox.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a rotary reduction box of a crawler type hydraulic drilling machine. Background Art

[0002] Crawler hydraulic drilling rigs are a type of construction machinery widely used in fields such as construction, mining, and geological exploration. Their primary function is to provide power through a hydraulic system, driving the drill bit for drilling operations. Compared to other types of drilling equipment, their crawler design provides superior maneuverability over complex and uneven terrain, making them widely used in applications requiring flexible mobility and adaptability to various construction environments.

[0003] The slewing reduction gearbox is a crucial power transmission component in crawler hydraulic drilling rigs. Its primary function is to convert the high-speed rotation generated by the hydraulic drive motor into low-speed, high-torque output to drive the drilling rig's slewing mechanism. This process is crucial for precise control and stable drilling operations. However, due to its complex power conversion requirements, the slewing reduction gearbox is subject to significant mechanical and thermal stresses.

[0004] Existing rotary reduction gearboxes generally utilize a sealed design to effectively prevent lubricant leakage and the intrusion of foreign matter. However, while this sealing structure effectively protects internal components, it also leads to heat accumulation and poor heat dissipation. Under prolonged and high-load operation, frictional heat generation within the reduction gearbox can easily cause a temperature rise. This not only affects the performance of the lubricant and may cause its oxidation and degradation, but also accelerates wear of the gears and bearings, shortening the reduction gearbox's service life. In light of this, we propose a rotary reduction gearbox for a crawler-type hydraulic drilling machine. Utility Model Content

[0005] The purpose of the utility model is to provide a rotary reduction gearbox for a crawler hydraulic drilling machine to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A rotary reduction gearbox of a crawler hydraulic drilling machine includes a rotary reduction gearbox body, wherein avoidance holes are provided at both left and right ends of the outer wall of the rotary reduction gearbox body, an arc-shaped mounting plate is provided on the outer wall of the rotary reduction gearbox body, and internal threaded tubes are provided on the outer wall of the arc-shaped mounting plate near both ends, and both internal threaded tubes are threadedly connected to external threaded air guide pipes, and the ends of the external threaded air guide pipes pass through the avoidance holes into the rotary reduction gearbox body, the right external threaded air guide pipe can blow air into the interior of the rotary reduction gearbox body, and the left external threaded air guide pipe can discharge air in the rotary reduction gearbox body, thereby generating airflow in the rotary reduction gearbox body, which is conducive to heat dissipation;

[0008] The outer ends of the two externally threaded air guide tubes are each provided with an air guide hose, the outer wall of the arc-shaped mounting plate is provided with a fixing bracket, the fixing bracket includes two first fixed vertical plates arranged symmetrically on the left and right, the bottom of the first fixed vertical plates is fixedly connected to the outer wall of the arc-shaped mounting plate, the two first fixed vertical plates are provided with fixed horizontal plates on the opposite sides and near the top, the two fixed horizontal plates are provided with second fixed vertical plates on the top, and the two second fixed vertical plates are provided with air guide covers on the opposite sides, and the two air guide covers are respectively connected to the two air guide hoses;

[0009] A heat exchanger is provided between the two second fixed vertical plates, and the heat exchanger includes two rectangular covers arranged symmetrically on the left and right, and the two rectangular covers are connected to the two air guide covers respectively, and a plurality of strip heat exchange tubes arranged equidistantly front to back are provided between the two rectangular covers, and a partition is provided in the right rectangular cover, and an air through hole is provided on the right side of the partition, and a fan is detachably connected to the air through a screw on the right side of the partition and located at the air through the air hole. The fan's wires pass through the inner wall of the rectangular cover to the outside world, and the connection between the wires and the rectangular cover is sealed. Airflow is generated in the right rectangular cover by the fan, and the airflow passes through the right air guide cover, the air guide hose and the external threaded air guide pipe into the rotary reduction gear box in turn. The heat in the rotary reduction gear box passes through the left external threaded air guide pipe, the air guide hose and the air guide cover in turn along with the airflow into the left rectangular cover. The airflow with heat passes through the plurality of strip heat exchange tubes, and can exchange heat with the outside air, thereby reducing the temperature of the air entering the right rectangular cover, thereby achieving the effect of heat dissipation.

[0010] Preferably, two mounting holes a arranged symmetrically front to back are provided on the outer wall of the arc-shaped mounting plate near both ends, a first bolt is connected in the mounting hole a, and a first thread groove for threaded connection of the first bolt is provided on the outer wall of the rotary reduction box body, which facilitates the disassembly and assembly of the arc-shaped mounting plate.

[0011] Preferably, circular grooves are provided on the inner wall of the arc-shaped mounting plate near both ends, an annular sealing rubber is provided in the circular groove, the externally threaded air guide tube passes through the annular sealing rubber, and the side of the annular sealing rubber fits tightly with the outer wall of the rotary reduction gearbox body to ensure the sealing of the connection between the arc-shaped mounting plate and the rotary reduction gearbox body.

[0012] Preferably, a rectangular slot is provided on the top of the first fixed vertical plate, and a rectangular plug is provided on the bottom of the rectangular cover. The rectangular plug is inserted into the rectangular slot to initially position the heat exchange component and the fixed bracket and improve the stability after connection.

[0013] Preferably, the outer walls of the two rectangular covers are provided with frame-shaped mounting plates at the edges of the opposite sides, and the sides of the second fixed vertical plate are provided with mounting holes b near the four corners, and the mounting holes b are connected with second bolts. The side of the frame-shaped mounting plate is provided with a second thread groove for threaded connection of the second bolt, which facilitates the disassembly and assembly of the heat exchange component and the fixed bracket.

[0014] Preferably, a waterproof and breathable membrane is provided inside the two rectangular covers and at the openings to prevent the lubricating oil in the rotary reduction gearbox from entering the rectangular covers.

[0015] Preferably, a plurality of heat dissipation fins are provided on both the front and rear sides of the strip-shaped heat exchange tube and are arranged at equal distances from left to right to improve the heat exchange effect of the strip-shaped heat exchange tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The rotary reduction gearbox of this crawler hydraulic drilling machine can form air circulation inside the housing by integrating an externally threaded air duct, an air hose, and a fan into the rotary reduction gearbox. This active heat dissipation design helps to quickly and effectively remove the heat generated internally, reducing the temperature inside the rotary reduction gearbox. Therefore, it can prevent the degradation of lubricating oil performance and oxidation degradation caused by excessive temperature, slow down the wear of gears and bearings, and extend the service life of the reduction gearbox.

[0018] 2. The rotary reduction gearbox of the crawler hydraulic drilling machine adopts the design of annular sealing rubber and arc-shaped mounting plate to ensure the sealing inside the system and prevent lubricating oil leakage caused by poor sealing. This helps to maintain the reliability of the equipment during high-load and long-term operations.

[0019] 3. The rotary reduction gearbox of the crawler hydraulic drilling machine has a detachable mounting structure of the first bolt and the second bolt, which makes the disassembly and assembly of the arc-shaped mounting plate and the heat exchanger more convenient. This design facilitates daily maintenance, inspection and replacement of parts, and improves the maintenance efficiency of the equipment.

[0020] 4. The rotary reduction gearbox of the crawler hydraulic drilling machine is equipped with a waterproof and breathable membrane at the opening of the rectangular cover, which can prevent lubricating oil from entering the heat exchange system, thereby further improving the operating stability and reliability of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model from a first perspective;

[0022] Figure 2 This is a schematic diagram of the overall structure of the utility model from a second perspective;

[0023] Figure 3It is a partial structural diagram of the utility model;

[0024] Figure 4 This is a schematic diagram of the rotary reduction box structure in the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the arc-shaped mounting plate in the present utility model;

[0026] Figure 6 This is a schematic diagram of the assembly structure of the fixed bracket and the heat exchange element in the present utility model;

[0027] Figure 7 Schematic diagram of the cross-sectional structure of the heat exchange element in the present utility model;

[0028] In the figure: 1. Rotary reduction gearbox; 10. Avoidance hole; 11. First threaded groove; 2. Arc-shaped mounting plate; 20. Internally threaded tube; 21. Mounting hole a; 22. First bolt; 23. Circular groove; 3. Externally threaded air duct; 4. Fixed bracket; 40. First fixed vertical plate; 400. Rectangular slot; 41. Fixed horizontal plate; 42. Second fixed vertical plate; 420. Mounting hole b; 43. Air guide cover; 44. Second bolt; 5. Heat exchanger; 50. Rectangular cover; 500. Rectangular plug-in block; 51. Frame-shaped mounting plate; 510. Second threaded groove; 52. Strip heat exchange tube; 520. Heat dissipation fin; 53. Partition; 530. Air hole; 6. Air guide hose; 7. Fan; 8. Waterproof and breathable membrane; 9. Annular sealing rubber. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to 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 invention.

[0031] See also Figure 1-Figure 7, the utility model provides a technical solution:

[0032] A rotary reduction gearbox of a crawler hydraulic drilling machine includes a rotary reduction gearbox 1. Avoidance holes 10 are provided at both left and right ends of the outer wall of the rotary reduction gearbox 1. An arc-shaped mounting plate 2 is provided on the outer wall of the rotary reduction gearbox 1. Internally threaded tubes 20 are provided on the outer wall of the arc-shaped mounting plate 2 near both ends. Both internally threaded tubes 20 are threadedly connected to externally threaded air guide pipes 3. The ends of the externally threaded air guide pipes 3 pass through the avoidance holes 10 into the rotary reduction gearbox 1. The right externally threaded air guide pipe 3 can blow air into the interior of the rotary reduction gearbox 1, and the left externally threaded air guide pipe 3 can discharge air from the rotary reduction gearbox 1, thereby generating airflow in the rotary reduction gearbox 1, which is conducive to heat dissipation.

[0033] An air guide hose 6 is provided at the outer end of each of the two externally threaded air guide tubes 3. A fixing bracket 4 is provided on the outer wall of the arc-shaped mounting plate 2. The fixing bracket 4 includes two first fixed vertical plates 40 that are symmetrically arranged on both sides. The bottom of the first fixed vertical plates 40 is fixedly connected to the outer wall of the arc-shaped mounting plate 2. Fixed horizontal plates 41 are provided on the opposite sides of the two first fixed vertical plates 40 and near the top. Second fixed vertical plates 42 are provided on the tops of the two fixed horizontal plates 41. Air guide covers 43 are penetrated on the opposite sides of the two second fixed vertical plates 42. The two air guide covers 43 are respectively connected to the two air guide hoses 6.

[0034] A heat exchanger 5 is provided between the two second fixed vertical plates 42. The heat exchanger 5 includes two rectangular covers 50 that are symmetrically arranged on the left and right. The two rectangular covers 50 are respectively connected to the two air guide covers 43. A plurality of strip-shaped heat exchange tubes 52 are arranged equidistantly in front and back between the two rectangular covers 50. A partition 53 is provided in the right rectangular cover 50. An air hole 530 is provided on the right side of the partition 53. A fan 7 is detachably connected to the air hole 530 on the right side of the partition 53 by screws. The wires of the fan 7 pass through the inner wall of the rectangular cover 50 to the outside, and the wires are connected to the rectangular cover 50. The connection of is sealed, and airflow is generated in the right rectangular cover 50 through the fan 7. The airflow passes through the right air guide cover 43, the air guide hose 6 and the external threaded air guide pipe 3 to the rotary reduction box 1 in sequence. The heat in the rotary reduction box 1 passes through the left external threaded air guide pipe 3, the air guide hose 6 and the air guide cover 43 in sequence along with the airflow into the left rectangular cover 50. The airflow with heat passes through multiple strip heat exchange tubes 52, which can exchange heat with the outside air, so that the temperature of the air entering the right rectangular cover 50 is reduced, thereby achieving the effect of heat dissipation.

[0035] In this embodiment, two mounting holes a21 arranged symmetrically in front and back are provided on the outer wall of the arc-shaped mounting plate 2 near both ends, and a first bolt 22 is connected in the mounting hole a21. The outer wall of the rotary reduction box body 1 is provided with a first thread groove 11 for threaded connection of the first bolt 22, which facilitates the disassembly and assembly of the arc-shaped mounting plate 2.

[0036] Specifically, circular grooves 23 are provided on the inner wall of the arc-shaped mounting plate 2 near both ends, and an annular sealing rubber 9 is provided in the circular groove 23. The externally threaded air guide tube 3 passes through the annular sealing rubber 9. The side of the annular sealing rubber 9 fits tightly with the outer wall of the rotary reduction box body 1 to ensure the sealing of the connection between the arc-shaped mounting plate 2 and the rotary reduction box body 1.

[0037] Furthermore, a rectangular slot 400 is provided at the top of the first fixed vertical plate 40, and a rectangular plug 500 is provided at the bottom of the rectangular cover 50. The rectangular plug 500 is inserted into the rectangular slot 400 to initially position the heat exchange element 5 and the fixed bracket 4 and improve the stability after connection.

[0038] Furthermore, frame-shaped mounting plates 51 are provided on the outer walls of the two rectangular covers 50 and at the edges of the opposite sides. Mounting holes b420 are provided on the sides of the second fixed vertical plate 42 and near the four corners. The second bolts 44 are connected to the mounting holes b420. The side of the frame-shaped mounting plate 51 is provided with a second threaded groove 510 for threaded connection of the second bolts 44, which facilitates the disassembly and assembly of the heat exchange component 5 and the fixed bracket 4.

[0039] Furthermore, a waterproof and breathable membrane 8 is provided inside the two rectangular covers 50 and at the openings to prevent the lubricating oil in the rotary reduction gearbox 1 from entering the rectangular covers 50 .

[0040] Furthermore, a plurality of heat dissipation fins 520 equidistantly arranged on the left and right sides are provided on both the front and rear sides of the strip-shaped heat exchange tube 52 to improve the heat exchange effect of the strip-shaped heat exchange tube 52 .

[0041] When the rotary reduction gearbox of the crawler hydraulic drilling machine of this embodiment is in use, first, the fan 7 is started in the right rectangular cover 50 to generate airflow, and the airflow passes through the air guide hood 43 on the right through the air guide hose 6 and the external threaded air guide pipe 3 and enters the interior of the rotary reduction gearbox 1, thereby driving the internal air circulation. As the airflow generated by the fan 7 flows, the hot air inside the rotary reduction gearbox 1 is pushed to the left and is guided out of the rotary reduction gearbox 1 through the left external threaded air guide pipe 3. The hot air continues to pass through the air guide hose 6 and the air guide hood 43 and enters the left rectangular cover 50. The hot air then passes through a plurality of strip heat exchange tubes 52 and exchanges heat with the heat dissipation fins 520 thereon, comes into contact with the outside air and is cooled. The cooled air temperature drops and is sent back to the rectangular cover 50 on the right, thus forming a continuous airflow cycle to ensure that the heat in the rotary reduction box 1 is effectively dissipated. The whole process significantly improves the heat dissipation efficiency through effective airflow management and heat exchange mechanism, maintains a lower temperature in the reduction box, thereby protecting the lubricating oil and mechanical components and extending the service life of the equipment.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary reduction gearbox for a crawler hydraulic drilling machine, comprising a rotary reduction gearbox body (1), characterized in that: The left and right ends of the outer wall of the rotary reduction box (1) are provided with avoidance holes (10), the outer wall of the rotary reduction box (1) is provided with an arc-shaped mounting plate (2), the outer wall of the arc-shaped mounting plate (2) and the positions near the two ends are provided with internal threaded tubes (20), the two internal threaded tubes (20) are threadedly connected with external threaded air guide tubes (3), the ends of the external threaded air guide tubes (3) pass through the avoidance holes (10) into the rotary reduction box (1), the outer ends of the two external threaded air guide tubes (3) are provided with air guide hoses (6), the outer wall of the arc-shaped mounting plate (2) is provided with a fixing bracket (4), the fixing bracket (4) includes two first fixing vertical plates (40) arranged symmetrically on the left and right, the opposite sides of the two first fixing vertical plates (40) and the positions near the top are provided with fixing horizontal plates (41), the two fixing A second fixed vertical plate (42) is provided on the top of each horizontal plate (41), and an air guide cover (43) is provided on the opposite sides of the two second fixed vertical plates (42). The two air guide covers (43) are respectively connected to the two air guide hoses (6). A heat exchange component (5) is provided between the two second fixed vertical plates (42), and the heat exchange component (5) includes two rectangular covers (50) arranged symmetrically on the left and right. The two rectangular covers (50) are respectively connected to the two air guide covers (43). A plurality of strip heat exchange tubes (52) arranged equidistantly in the front and back are provided between the two rectangular covers (50). A partition (53) is provided in the right rectangular cover (50), and an air hole (530) is provided on the right side of the partition (53). A fan (7) is detachably connected to the right side of the partition (53) and located at the air hole (530) by screws.

2. The rotary reduction gearbox of the crawler hydraulic drilling machine according to claim 1, characterized in that: Two mounting holes a (21) arranged symmetrically in front and back are provided on the outer wall of the arc-shaped mounting plate (2) and near both ends. A first bolt (22) is connected in the mounting hole a (21). The outer wall of the rotary reduction box (1) is provided with a first thread groove (11) for threaded connection of the first bolt (22).

3. The rotary reduction gearbox of the crawler hydraulic drilling machine according to claim 1, characterized in that: Circular grooves (23) are provided on the inner wall of the arc-shaped mounting plate (2) and near both ends. An annular sealing rubber (9) is provided in the circular groove (23). The externally threaded air guide tube (3) passes through the annular sealing rubber (9). The side surface of the annular sealing rubber (9) is tightly fitted with the outer wall of the rotary reduction gearbox (1).

4. The rotary reduction gearbox of the crawler hydraulic drilling machine according to claim 1, characterized in that: A rectangular slot (400) is provided on the top of the first fixed vertical plate (40), and a rectangular plug-in block (500) is provided on the bottom of the rectangular cover (50), wherein the rectangular plug-in block (500) is plugged into the rectangular slot (400).

5. The rotary reduction gearbox of the crawler hydraulic drilling machine according to claim 1, characterized in that: The outer walls of the two rectangular covers (50) are provided with frame-shaped mounting plates (51) at the edges of opposite sides. The sides of the second fixed vertical plate (42) are provided with mounting holes b (420) near the four corners. The mounting holes b (420) are connected with second bolts (44). The sides of the frame-shaped mounting plates (51) are provided with second thread grooves (510) for the second bolts (44) to be threadedly connected.

6. The rotary reduction gearbox of the crawler hydraulic drilling machine according to claim 1, characterized in that: A waterproof and breathable membrane (8) is provided inside the two rectangular covers (50) and at the openings.

7. The rotary reduction gearbox of the crawler hydraulic drilling machine according to claim 1, characterized in that: A plurality of heat dissipation fins (520) arranged at equal intervals on the left and right sides are provided on both the front and rear sides of the strip-shaped heat exchange tube (52).

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