Rotary power speed reducer mechanism capable of being provided with four hydraulic motors

Abstract

The utility model belongs to the technical field of engineering machinery, and particularly relates to a rotary power speed reducer mechanism capable of being provided with four hydraulic motors, which comprises a machine body base, a shell, a plurality of bearing sets, a plurality of hydraulic motors, a plurality of oil pumps and a gear set, the shell is of a hollow structure and is fixedly connected with the machine body base, and the bearing sets are fixedly connected with the shell. The bearing set is symmetrically arranged on the outer side of the shell, the gear set is arranged in the shell, an input shaft of the hydraulic motor and a pump shaft of the oil pump are fixedly connected with the gear set respectively, and a plunger of the oil pump is close to the bearing set and the gear set. The service life of the mechanism is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a rotary power reducer mechanism capable of installing four hydraulic motors. Background Art

[0002] Existing pile driver and drilling rig equipment basically has two hydraulic motors placed side by side in front or at the rear, driving the primary transmission gears respectively to transmit the power of hydraulic transmission oil. Due to the special terrain, accidents such as drill jamming and drill burial often occur. However, due to the limitations of the development of existing power technology, the torque of the two hydraulic motors is limited and cannot cope with such emergencies. It is also easy to generate high instantaneous pressure and wear the bearings. In addition, the flow pressure of the hydraulic transmission oil affects the uneven distribution of equipment power, increasing the energy transmission loss. In addition, the reducer mechanism in pile driver and drilling rig equipment is used vertically. The existing technology uses the method of pouring lubricating oil into the shell to lubricate the bearings and gears, but the liquid level of the lubricating oil cannot be controlled, so the lubrication effect of the upper part of the bearings and gears cannot be guaranteed during vertical use. Long-term use aggravates wear and increases maintenance costs. At the same time, there are major safety hazards to production and construction. Utility Model Content

[0003] The utility model aims at solving the above problems and specifically designs a rotary power reducer mechanism which can be installed with four hydraulic motors, thereby ensuring the lubrication effect of the upper bearings and gears of the reducer during vertical use, increasing the output torque and extending the service life of the mechanism.

[0004] To achieve the above-mentioned purpose, the utility model provides a rotary power reducer mechanism that can be installed with four hydraulic motors, including a body base, a shell, a bearing group, a hydraulic motor, an oil pump and a gear group. The shell is a hollow structure, fixedly connected to the body base, the bearing group is fixedly connected to the shell, the hydraulic motor and the oil pump each have multiple groups, symmetrically arranged on the outside of the shell, and the gear group is arranged inside the shell; the input shaft of the hydraulic motor and the pump shaft of the oil pump are respectively fixedly connected to the gear group, and the plunger of the oil pump is close to the bearing group and the gear group.

[0005] Preferably, the gear group includes a primary transmission gear and a secondary reduction gear that mesh with each other, the bearing group includes a main bearing and a secondary bearing, the input shaft of the hydraulic motor and the pump shaft of the oil pump are rotatably connected to the housing through the secondary bearing, and the shaft end is fixedly connected to the primary transmission gear, and the secondary reduction gear is fixedly connected to the input shaft of the power head in the drilling rig through the main bearing.

[0006] Preferably, the size of the primary transmission gear is smaller than the size of the secondary reduction gear.

[0007] By adopting the above technical scheme, multiple hydraulic motors are evenly arranged, with the aim of outputting greater torque within the same hydraulic transmission pressure and transmission flow, being able to cope with accidents such as drill sticking and drill burial, carrying out large-scale rescue and construction plans, reducing energy loss, and at the same time evenly outputting stress to the gear group to ensure that the gear group is evenly stressed, reduce bearing wear, and increase the service life of parts; an oil pump for lubrication is added to perform real-time lubrication to the upper gear group and bearing group in the vertical transmission through the oil supply pipeline to ensure lubrication effect, reduce transmission loss, and increase the stability and reliability of the mechanism operation.

[0008] Furthermore, a bearing limiting plate is installed outside the shell.

[0009] By adopting the above technical solution, the bearing limit plate is used to limit the position of the bearing group, avoiding the bearing group from excessive movement during use and causing deviation or swinging, thereby increasing the reliability of the bearing group operation and the overall stability of the mechanism and extending the service life.

[0010] Furthermore, the housing is also fixedly mounted with a motor mounting seat, and there are four groups of hydraulic motors, which are symmetrically mounted at the four corners of the housing through the motor mounting seat.

[0011] By adopting the above technical solution, the motor mounting base is used to fix the hydraulic motor, and the hydraulic motor is firmly installed outside the housing to avoid vibration or swing of the hydraulic motor and ensure the stable output of the mechanism. In addition, it has the advantages of convenient disassembly and assembly and increased thermal insulation protection.

[0012] Furthermore, a wedge gasket is provided between the housing and the oil pump.

[0013] By adopting the above technical solution, the wedge gasket is used to adjust the gap and angle between the oil pump and the housing, fill the gap on the irregular surface, increase the firmness and adaptability of the assembly of the two, and absorb the vibration and noise during the operation of the mechanism to extend the service life.

[0014] In summary, the utility model has the following advantages and beneficial technical effects:

[0015] 1. The utility model is provided with multiple hydraulic motors in an evenly distributed layout, in order to achieve the maximum torque improvement under the same working conditions, reduce the problem of excessive transmission energy loss in the prior art, and ensure that effective rescue and construction plans can be carried out in the face of emergencies; multiple hydraulic motors output uniform power to the gear set, avoid uneven bearing loads caused by eccentricity of the gear set, reduce bearing wear, and extend service life; an oil pump is added to perform real-time full-coverage lubrication to the upper gear set and bearing set in the vertical transmission through the oil supply pipeline, ensure lubrication effect, reduce transmission loss, and increase the stability and reliability of the mechanism operation.

[0016] 2. The bearing limit plate is used to limit the position of the bearing group to prevent the bearing group from excessive movement during use and causing deviation or swing, thereby increasing the reliability of the bearing group operation and the overall stability of the mechanism and extending its service life.

[0017] 3. The motor mounting base is used to fix the hydraulic motor and firmly install the hydraulic motor outside the housing to prevent the hydraulic motor from vibrating or swinging and ensure the stable output of the mechanism. In addition, it has the advantages of convenient disassembly and assembly and increased thermal insulation protection.

[0018] 4. Wedge gaskets are used to adjust the gap and angle between the oil pump and the housing, fill the gap on irregular surfaces, increase the firmness and adaptability of the assembly of the two, and absorb vibration and noise during the operation of the mechanism to extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0021] Figure 2 This is a cross-sectional view of the utility model Figure 1 ;

[0022] Figure 3 This is a cross-sectional view of the utility model Figure 2 ;

[0023] Figure 4 It is a left side schematic diagram of the utility model;

[0024] Figure 5 It is a right side schematic diagram of the utility model.

[0025] The reference numerals in the accompanying drawings are:

[0026] 1. Machine base; 2. Shell;

[0027] 3. Bearing group; 31. Main bearing; 32. Auxiliary bearing;

[0028] 4. Hydraulic motor; 5. Oil pump;

[0029] 6. Gear set; 61. Primary transmission gear; 62. Secondary reduction gear;

[0030] 7. Bearing limit plate; 8. Motor mounting seat; 9. Wedge gasket. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-Figure 5 The utility model is further described in detail:

[0032] like Figure 1-Figure 3 As shown, this embodiment discloses a rotary power reducer mechanism that can be installed with four hydraulic motors, including a body base 1, a housing 2, a bearing group 3, a hydraulic motor 4, an oil pump 5 and a gear group 6. The housing 2 is a square with a hollow structure, one end face of which is welded to the body base 1, and the two form a closed structure. The housing 2 is provided with multiple groups of through holes, and the bearing group 3 is sleeved on the through holes of the housing 2. The hydraulic motor 4 and the oil pump 5 each have multiple groups, which are symmetrically arranged on both sides of the housing 2, and the two are coaxially driven. The output shaft of the hydraulic motor 4 is fixedly connected to one side of the driving wheel part of the gear group 6, and the oil pump 5 is a gear oil pump 5, wherein the pump shaft as the input end is fixedly connected to the other side of the driving wheel part of the gear group 6. The plunger oil outlet of the oil pump 5 is close to the bearing group 3 and the gear group 6. The gear group 6 is arranged in the hollow structure of the housing 2; the gear group 6 includes a primary transmission gear 61 and a secondary reduction gear 62 whose gear teeth are meshed with each other. There are four primary transmission gears 61 and one secondary reduction gear 62. The bearing group 3 includes a main bearing 31 and eight secondary bearings 32. The output shaft of the hydraulic motor 4 and the pump shaft of the oil pump 5 are rotatably connected to the housing 2 through the secondary bearings 32, and the shaft ends are respectively sleeved on both sides of the shaft hole of the primary transmission gear 61. The secondary reduction gear 62 is fixedly connected to the input shaft of the power head in the drilling rig equipment through the main bearing 31; the size of the primary transmission gear 61 is smaller than that of the secondary reduction gear 62.

[0033] like Figure 4-Figure 5 As shown, a bearing limit plate 7 is fixedly installed on the outside of the housing 2 by fastening screws; a motor mounting seat 8 is also fixedly installed on the outside of the housing 2 by fastening screws, and there are four groups of hydraulic motors 4, which are symmetrically arranged on the four corners of the side end surface of the housing 2 through matching motor mounting seats 8; a wedge gasket 9 is fixedly installed between the oil pump 5 and the housing 2.

[0034] The working principle of the utility model of a rotary power reducer mechanism capable of installing four hydraulic motors is as follows:

[0035] 1. The reducer mechanism includes a body base 1, a housing 2, a bearing group 3, a hydraulic motor 4, an oil pump 5 and a gear group 6. The housing 2 is a square with a hollow structure, one end of which is welded to the body base 1, and the two form a closed structure. The housing 2 has multiple sets of through holes, and the bearing group 3 is sleeved on the through holes of the housing 2. The hydraulic motor 4 and the oil pump 5 each have multiple groups, which are symmetrically arranged on both sides of the housing 2, and the two are coaxially driven. The output shaft of the hydraulic motor 4 is fixedly connected to one side of the driving wheel part of the gear group 6. The oil pump 5 is a gear oil pump 5, in which the pump shaft as the input end On the other side of the driving wheel part fixedly connected to the gear group 6, the plunger oil outlet of the oil pump 5 is close to the bearing group 3 and the gear group 6, and the gear group 6 is arranged in the hollow structure of the housing 2; multiple groups of hydraulic motors 4 output torque evenly and transmit equal stress to the gear group 6 to achieve smooth transmission of the shaft and the bearing group 3 and reduce bearing wear; an additional oil pump 5 is provided, and lubricating oil is sprayed to the gear group 6 and the bearing group 3 through the oil supply pipeline. Multiple groups of oil pumps 5 work together to cover the range of the sprayed lubricating oil to the overall structure of the bearing group 3 and the gear group 6, thereby achieving effective lubrication of the oil pump 5 in vertical use.

[0036] 2. The gear set 6 includes a primary transmission gear 61 and a secondary reduction gear 62 whose gear teeth mesh with each other. There are four primary transmission gears 61 and one secondary reduction gear 62. The bearing set 3 includes a main bearing 31 and eight secondary bearings 32. The output shaft of the hydraulic motor 4 and the pump shaft of the oil pump 5 are rotatably connected to the housing 2 through the secondary bearings 32, and the shaft ends are respectively sleeved on both sides of the shaft hole of the primary transmission gear 61. The secondary reduction gear 62 is fixedly connected to the input shaft of the power head in the drilling rig equipment through the main bearing 31. The output shaft of the hydraulic motor 4 outputs power to drive the primary transmission gear 61 to rotate. The primary transmission gear 61 is the driving wheel, and transmits power to the secondary reduction gear 62 as the driven wheel through gear meshing, thereby realizing the operation of the power head. In addition, the pump shaft of the oil pump 5 sleeved on the other side of the primary transmission gear 61 receives power transmission, and relies on the change and movement of the working volume formed between its own pump cylinder and the meshing gear to realize the transportation of lubricating oil.

[0037] 3. The size of the primary transmission gear 61 is smaller than that of the secondary reduction gear 62. The small gear drives the large gear to transmit and output a larger transmission ratio, thereby achieving the purpose of mechanism deceleration.

[0038] 4. A bearing limit plate 7 is fixedly installed on the outside of the housing 2 by means of fastening screws and is pressed onto the outside of the bearing group 3 to limit the axial position change of the bearing group 3, thereby achieving the limitation and reinforcement of the bearing group 3.

[0039] 5. A motor mounting seat 8 is also fixedly installed on the outside of the shell 2 by fastening screws. There are four groups of hydraulic motors 4, which are symmetrically arranged on the four corners of the side end surface of the shell 2 through matching motor mounting seats 8; the motor mounting seat 8 fixes the installation position of the hydraulic motor 4, reduces mechanical vibration and noise, and realizes stable output of the hydraulic motor 4.

[0040] 6. A wedge washer 9 is fixedly installed between the oil pump 5 and the housing 2. The wedge washer 9 is used to pressure-join the housing 2 and the oil pump 5 to fill and balance the assembly gap and ensure the stability of the assembly structure.

[0041] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A rotary power reducer mechanism capable of installing four hydraulic motors, characterized in that: It includes a body base, a shell, a bearing group, a hydraulic motor, an oil pump and a gear group. The shell is a hollow structure and is fixedly connected to the body base. The bearing group is fixedly connected to the shell. The hydraulic motor and the oil pump each have multiple groups, which are symmetrically arranged on the outside of the shell. The gear group is arranged inside the shell. The input shaft of the hydraulic motor and the pump shaft of the oil pump are respectively fixedly connected to the gear group, and the plunger of the oil pump is close to the bearing group and the gear group.

2. The rotary power reducer mechanism capable of installing four hydraulic motors according to claim 1, characterized in that: The gear group includes a primary transmission gear and a secondary reduction gear that mesh with each other, the bearing group includes a main bearing and a secondary bearing, the input shaft of the hydraulic motor and the pump shaft of the oil pump are rotatably connected to the housing through the secondary bearing, and the shaft ends are fixedly connected to the primary transmission gear, and the secondary reduction gear is fixedly connected to the input shaft of the power head in the drilling rig through the main bearing.

3. The rotary power reducer mechanism capable of installing four hydraulic motors according to claim 2, characterized in that: The size of the primary transmission gear is smaller than that of the secondary reduction gear.

4. The rotary power reducer mechanism capable of installing four hydraulic motors according to claim 3, characterized in that: A bearing limiting plate is additionally installed outside the shell.

5. The rotary power reducer mechanism capable of installing four hydraulic motors according to claim 4, characterized in that: The housing is also fixedly mounted with a motor mounting seat, and there are four groups of hydraulic motors, which are symmetrically mounted at the four corners of the housing through the motor mounting seats.

6. The rotary power reducer mechanism capable of installing four hydraulic motors according to claim 5, characterized in that: A wedge washer is provided between the housing and the oil pump.

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