Motor assembly and rotary drilling rig

Abstract

The motor assembly comprises a motor, a hydraulic output assembly, a first fixing seat, a second fixing seat and a third fixing seat, an output shaft of the motor is in transmission connection with the hydraulic output assembly, and the first fixing seat and the second fixing seat are arranged on the two sides of the axis of the output shaft of the motor respectively. The first fixing seat, the second fixing seat and the third fixing seat are used for jointly supporting the motor assembly; the projection of the gravity center of the motor assembly on a plane formed by the first fixing base, the second fixing base and the third fixing base is located in an area defined by the first fixing base, the second fixing base and the third fixing base. According to the motor assembly, the projection of the gravity center of the motor assembly is located in the area defined by the first fixing base, the second fixing base and the third fixing base, and therefore the effect of balancing deflection torque is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a motor assembly and a rotary drilling rig. Background Art

[0002] A rotary drilling rig is a construction machine specifically used for hole-forming operations in building foundation projects and is often applied to various harsh environments. During the use of a rotary drilling rig, it will be subjected to relatively large vibrations in such harsh environments. Then, many components installed on the rotary drilling rig will have their service lives greatly shortened under such vibrations for a long time. Among them, the motor as the power source is also very affected.

[0003] In the prior art, a motor is generally installed through two bases, and the two bases are symmetrically arranged with the center of the motor as the symmetry point. However, when the entire motor and other output components together form a power element, the center of gravity of the power element is not at the center position of the motor. Then, when subjected to vibrations, the deflection torque generated by the center-of-gravity offset will act on the bolts for installing the motor on the bases, thereby aggravating the stress condition of the bolts, seriously shortening the service life of the bolts, resulting in unstable connection of the bases, and further causing unstable installation of the motor. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to provide a motor assembly and a rotary drilling rig that can improve the installation stability of the motor.

[0005] The present utility model provides a motor assembly, including: a motor, a hydraulic output component, a first fixing seat, a second fixing seat, and a third fixing seat. The output shaft of the motor is in transmission connection with the hydraulic output component. The first fixing seat and the second fixing seat are respectively arranged on both sides of the axis of the output shaft of the motor. The first fixing seat, the second fixing seat, and the third fixing seat are used to jointly support the motor assembly.

[0006] The projection of the center of gravity of the motor assembly on the plane formed by the first fixing seat, the second fixing seat, and the third fixing seat is located within the enclosed area of the first fixing seat, the second fixing seat, and the third fixing seat.

[0007] In one embodiment, the motor includes a first end and a second end opposite to the first end. The first fixing seat and the second fixing seat extend from the first end towards the second end to the middle of the motor in the axial direction. The third fixing seat is arranged on the side of the first fixing seat and the second fixing seat away from the first end.

[0008] In one embodiment, the third fixing seat is connected to one end of the motor facing the hydraulic output component.

[0009] In one embodiment, the motor assembly further includes a connecting member, which is installed at one end of the motor facing the hydraulic output assembly. The connecting member is also fixedly connected to the hydraulic output assembly, and the third fixing seat is fixedly connected to the connecting member.

[0010] In one embodiment, the connecting member is provided with a plurality of mounting positions. The hydraulic output assembly is connected to the connecting member through some of the mounting positions, and the third fixing seat is connected to the connecting member through another part of the mounting positions.

[0011] In one embodiment, the plurality of mounting positions are arranged annularly around the output shaft of the motor.

[0012] In one embodiment, the first fixing seat, the second fixing seat and the third fixing seat all include a main body portion and a mounting portion. The main body portions of the first fixing seat and the second fixing seat are connected to the motor, and the main body portion of the third fixing seat is connected to the connecting member. The mounting portion bends and extends relative to the main body portion, and the mounting portion is used to mount the motor assembly on the frame of the rotary drilling rig.

[0013] In one embodiment, the first fixing seat further includes a reinforcing plate, and the reinforcing plate is respectively connected to the main body portion and the mounting portion to support the main body portion.

[0014] In one embodiment, the motor assembly further includes a terminal block, which is electrically connected to the motor, and the terminal block is used to dock and control the control component of the motor.

[0015] An embodiment of another aspect of the present application further provides a rotary drilling rig, including a frame and the motor assembly as described above. The motor assembly is mounted on the frame through the first fixing seat, the second fixing seat and the third fixing seat.

[0016] In the motor assembly and the rotary drilling rig provided by the embodiments of the present utility model, the motor assembly is provided with a first fixing seat, a second fixing seat and a third fixing seat in total. The first fixing seat and the second fixing seat are arranged on both sides of the motor to provide stable installation for the motor. At the same time, a third fixing seat is added. In the plane formed by the first fixing seat, the second fixing seat and the third fixing seat, the first fixing seat, the second fixing seat and the third fixing seat jointly enclose an installation projection area, so that the projection of the center of gravity of the motor assembly is located within the installation projection area, thereby balancing the deflection moment generated by the center of gravity offset through the third fixing seat and improving the stability when the first fixing seat, the second fixing seat and the third fixing seat are installed. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a motor assembly according to an embodiment of the present utility model.

[0019] Figure 2 It is a front view of a motor assembly according to an embodiment of the present utility model.

[0020] Figure 3 It is a top view of a motor assembly according to an embodiment of the present utility model. Specific embodiments

[0021] The following will describe in detail specific embodiments of the present utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the description of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0022] In the description of the present utility model, unless otherwise clearly defined and limited, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0023] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this utility model is usually placed. It is only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0024] Terms such as "first", "second", "third", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order.

[0025] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, in addition to the elements listed, and may also include other elements not expressly listed.

[0026] Please refer to Figures 1 to 3 , which shows a motor assembly provided in an embodiment of the present invention, including a motor 1, a hydraulic output assembly 2, a first fixing seat 3, a second fixing seat 4 and a third fixing seat 5. The output shaft of the motor 1 is in transmission connection with the hydraulic output assembly 2. The first fixing seat 3 and the second fixing seat 4 are respectively arranged on both sides of the axis of the output shaft of the motor 1. The first fixing seat 3, the second fixing seat 4 and the third fixing seat 5 are used to jointly support the motor assembly;

[0027] The projection of the center of gravity of the motor assembly on the plane formed by the first fixing seat 3, the second fixing seat 4 and the third fixing seat 5 is located within the enclosed area of the first fixing seat 3, the second fixing seat 4 and the third fixing seat 5. In one embodiment, the third fixing seat 5 is connected to one end of the motor 1 facing the hydraulic output assembly 2.

[0028] As Figure 1 shown, the motor 1 is in transmission connection with the hydraulic output assembly 2. Preferably, the hydraulic output assembly 2 is a main pump. As a power source, the motor 1 can drive the hydraulic output assembly 2 to work after being connected to the hydraulic output assembly 2, so as to convert electrical energy into mechanical energy, and then transmit the power of the motor 1 to the remaining driven parts through the hydraulic output assembly 2. The first fixing seat 3 and the second fixing seat 4 are arranged around the center of the motor 1. When the center of the motor 1 coincides with the center of gravity, the projection of the center of gravity of the motor 1 on the plane formed by the first fixing seat 3 and the second fixing seat 4 is located within the area where the first fixing seat 3 faces the second fixing seat 4, which can stably install the motor 1.

[0029] Since the hydraulic output assembly 2 needs to transmit power mechanically, the hydraulic output assembly 2 is a metal part with a large mass. When the motor 1 is connected to the hydraulic output assembly 2, affected by the weight of the hydraulic output assembly 2, the center of gravity originally at the center position of the motor 1 deviates towards the direction close to the hydraulic output assembly 2. When subjected to vibration, the center of gravity position of the motor assembly deviates from the center position of the motor 1, and the distance between the center of gravity position and the center position is the lever arm, and a deflection moment will be generated in this case.

[0030] In this embodiment, along the plane perpendicular to the output shaft of the motor 1 and passing through the center of gravity of the motor assembly, that is, along the vertical plane passing through the center of gravity of the motor assembly, the third fixing seat 5 and the first fixing seat 3 are respectively arranged on both sides of the vertical plane, and the motor assembly is supported by the third fixing seat 5. In this embodiment, the second fixing seat 4 and the first fixing seat 3 are located on the same side of the vertical plane. However, it is not limited to this. It is only necessary to ensure that one of the first fixing seat 3, the second fixing seat 4 or the third fixing seat 5 is arranged on both sides of the vertical plane, so as to ensure that the torque generated by gravity is balanced, thereby avoiding the deflection torque generated by gravity.

[0031] Preferably, the third fixing seat 5 is connected to one end of the motor 1 facing the hydraulic output assembly 2. Since the mass of the motor 1 is greater than the mass of the hydraulic output assembly 2, the center of gravity of the entire motor assembly is still on the motor 1, but it will be a little closer to the hydraulic output assembly 2. Then, connecting the third fixing seat 5 to the connection point between the motor 1 and the hydraulic output assembly 2, that is, installing the third fixing seat 5 at the end of the motor 1 closest to the hydraulic output assembly 2, then the third fixing seat 5 will be closer to the hydraulic output assembly 2 than the center of gravity of the motor assembly.

[0032] Specifically, within the plane formed by the installation points of the first fixing seat 3, the installation points of the second fixing seat 4 and the installation points of the third fixing seat 5, the installation points of the first fixing seat 3, the installation points of the second fixing seat 4 and the installation points of the third fixing seat 5 are connected end to end in sequence to form an installation projection area, and the projection of the center of gravity of the motor assembly within this plane will fall within the installation projection area. Therefore, the torque generated by the gravity of the motor assembly will be balanced by the first fixing seat 3, the second fixing seat 4 and the third fixing seat 5.

[0033] In this embodiment, the third fixing seat 5 balances the deflection torque generated by the center of gravity offset, avoids the mutual wear between the bolts and the mounting seat, improves the service life of the bolts, and improves the stability during the installation of the first fixing seat 3, the second fixing seat 4 and the third fixing seat 5.

[0034] In one embodiment, the motor 1 includes a first end and a second end opposite to the first end. The first fixing seat 3 and the second fixing seat 4 extend from the first end towards the second end to the middle of the motor 1 in the axial direction, and the third fixing seat 5 is arranged on the side of the first fixing seat 3 and the second fixing seat 4 away from the first end.

[0035] As Figure 3As shown, one end of the motor 1 away from the hydraulic output assembly 2 is the first end, and the end close to the hydraulic output assembly 2 is the second end. The first fixing seat 3 and the second fixing seat 4 are arranged axially along the output shaft of the motor 1 in the middle of the first end and the second end. Since the overall center of the motor assembly always tends to shift towards the side close to the hydraulic output assembly 2, the third fixing seat 5 is arranged on the side of the first fixing seat 3 and the second fixing seat 4 away from the first end, so that along the axis of the output shaft of the motor 1, the center of gravity of the motor assembly is located between the first fixing seat 3 and the third fixing seat 5.

[0036] In one embodiment, the motor assembly further includes a connecting member 6. The connecting member 6 is installed at one end of the motor 1 facing the hydraulic output assembly 2. The connecting member 6 is also fixedly connected to the hydraulic output assembly 2, and the third fixing seat 5 is fixedly connected to the connecting member 6. In one embodiment, the connecting member 6 is provided with a plurality of mounting positions 61. The hydraulic output assembly 2 is connected to the connecting member 6 through a part of the mounting positions 61, and the third fixing seat 5 is connected to the connecting member 6 through another part of the mounting positions 61. In one embodiment, the plurality of mounting positions 61 are arranged annularly along the output shaft of the motor 1.

[0037] As Figure 1 shown, a connecting member 6 is installed on the side of the motor 1 facing the hydraulic output assembly 2. In this embodiment, the connecting member 6 is selected as a transition plate. The connecting member 6 is provided with a plurality of mounting positions 61. After the connecting member 6 is connected to the motor 1, the hydraulic output assembly 2 can be installed through these mounting positions 61. Since the size and installation space of the motor 1 are fixed, when facing different hydraulic output requirements, different specifications of the hydraulic output assembly 2 need to be installed. When the mounting holes on the hydraulic output assembly 2 do not correspond to the mounting holes on the motor 1 and cannot be installed, the connecting member 6 needs to be used for installation. One end of the connecting member 6 is connected to the motor 1, and the other end installs different-sized hydraulic output assemblies 2 through a plurality of mounting positions 61 arranged annularly along the output shaft of the motor 1, and the plurality of mounting positions 61 form a plurality of concentric circles with the output shaft of the motor 1 as the axis. And because the mounting positions 61 are arranged annularly along the output shaft, after installing other components through the mounting positions 61, the force on the motor 1 can also be made more balanced.

[0038] As Figure 1 shown, in this embodiment, the third fixing seat 5 is installed through a part of the mounting positions 61, so that no additional installation space is required. And installing the third fixing seat 5 on the mounting positions 61 at the lower end of the connecting member 6 can better provide support for the motor assembly. Since the gravity of the entire motor assembly persists, the third fixing seat 5 needs to be installed below to provide a support force in the opposite direction to offset it. Similarly, arranging the first fixing seat 3 and the second fixing seat 4 symmetrically can also ensure more stable installation of the motor 1.

[0039] In one embodiment, the first fixing seat 3, the second fixing seat 4, and the third fixing seat 5 each include a main body portion 31 and a mounting portion 32. The main body portions 31 of the first fixing seat 3 and the second fixing seat 4 are connected to the motor 1, and the main body portion 31 of the third fixing seat 5 is connected to the connecting member 6. The mounting portion 32 extends by bending relative to the main body portion 31, and the mounting portion 32 is used to mount the motor assembly on the frame of the rotary drilling rig. In one embodiment, the first fixing seat 3 further includes a reinforcing plate 33, and the reinforcing plate 33 is respectively connected to the main body portion 31 and the mounting portion 32 for supporting the main body portion 31.

[0040] As Figure 1 shown, the portion of the first fixing seat 3 connected to the motor 1 is the main body portion 31. In this embodiment, the main body portion 31 is selected as a rectangular flat plate corresponding to the mounting holes on the motor 1. Since the motor 1 is cylindrical, the mounting holes of the motor 1 are located on the side surface of the motor 1. And the first fixing seat 3 needs to mount the motor 1 on the frame at the bottom surface. Therefore, after the first fixing seat 3 is connected to the motor 1 through the main body portion 31, it needs to be bent and then extend the mounting portion 32. The mounting portion 32 fits with the mounting surface on the frame, so that the motor 1 is connected to the frame through the mounting portion 32. Since the mass of the motor 1 is relatively large, and the main body portion 31 and the mounting portion 32 for connection are small-sized flat plates, a reinforcing plate 33 is added between the main body portion 31 and the mounting portion 32 to enhance the supporting ability of the first fixing seat 3.

[0041] In this embodiment, the second fixing seat 4 and the first fixing seat 3 are symmetrically arranged on both sides of the motor 1, so the main body portion of the second fixing seat 4 is also connected to the motor 1. The main body portion of the third fixing seat 5 is connected to the connecting member 6, so that the center of gravity of the motor assembly can be covered within the installation projection area.

[0042] In one embodiment, the motor assembly further includes a terminal block 7, and the terminal block 7 is electrically connected to the motor 1. The terminal block 7 is used to connect to a control component for controlling the motor 1.

[0043] As Figure 1 shown, a terminal block 7 is further connected to the end of the motor 1 away from the hydraulic output component 2. Since the terminal block 7 is mainly used for electrical connection and for transmitting electrical signals, and does not need to transmit mechanical power. Therefore, the overall volume and mass of the terminal block 7 are relatively small. After the terminal block 7 is installed on the motor 1, it has little influence on the center of gravity position of the motor assembly. After the terminal block 7 is electrically connected to the control component, it can transmit the electrical signal of the control component to the motor 1, and further control the output power of the motor 1.

[0044] The present utility model further provides a rotary drilling rig, including a frame and the motor assembly as described above. The motor assembly is mounted on the frame through the first fixing seat 3, the second fixing seat 4, and the third fixing seat 5.

[0045] The motor assembly installed using the first fixing base 3, the second fixing base 4, and the third fixing base 5 can, after being installed on the frame, improve the service life of the first fixing base 3, the second fixing base 4, and the third fixing base 5, avoid frequent disassembly and replacement during the use of the rotary drilling rig, and improve the working efficiency of the rotary drilling rig.

[0046] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A motor assembly, characterized in that: The invention comprises a motor (1), a hydraulic output assembly (2), a first fixing seat (3), a second fixing seat (4) and a third fixing seat (5), wherein the output shaft of the motor (1) is drivingly connected to the hydraulic output assembly (2), the first fixing seat (3) and the second fixing seat (4) are respectively arranged on both sides of the axis of the output shaft of the motor (1), and the first fixing seat (3), the second fixing seat (4) and the third fixing seat (5) are used to jointly support the motor assembly; The projection of the center of gravity of the motor assembly on the plane formed by the first fixing seat (3), the second fixing seat (4) and the third fixing seat (5) is located within the enclosed area of ​​the first fixing seat (3), the second fixing seat (4) and the third fixing seat (5).

2. The motor assembly according to claim 1, characterized in that: The motor (1) comprises a first end and a second end opposite to the first end; the first fixing seat (3) and the second fixing seat (4) extend from the first end toward the second end to the middle of the motor (1) in the axial direction; and the third fixing seat (5) is arranged on a side of the first fixing seat (3) and the second fixing seat (4) away from the first end.

3. The motor assembly according to claim 1, characterized in that: The third fixing seat (5) is connected to one end of the motor (1) facing the hydraulic output assembly (2).

4. The motor assembly according to claim 1, characterized in that: The motor assembly further comprises a connecting member (6), wherein the connecting member (6) is mounted on one end of the motor (1) facing the hydraulic output assembly (2), the connecting member (6) is also fixedly connected to the hydraulic output assembly (2), and the third fixing seat (5) is fixedly connected to the connecting member (6).

5. The motor assembly according to claim 4, characterized in that: The connecting member (6) is provided with a plurality of mounting positions (61), the hydraulic output assembly (2) is connected to the connecting member (6) via some of the mounting positions (61), and the third fixing seat (5) is connected to the connecting member (6) via another portion of the mounting positions (61).

6. The motor assembly according to claim 5, characterized in that: The plurality of mounting positions (61) are arranged in a ring shape around the output shaft of the motor (1).

7. The motor assembly according to claim 6, characterized in that: The first fixing seat (3), the second fixing seat (4) and the third fixing seat (5) all comprise a main body (31) and a mounting portion (32); the main bodies (31) of the first fixing seat (3) and the second fixing seat (4) are connected to the motor (1); the main body (31) of the third fixing seat (5) is connected to the connecting member (6); the mounting portion (32) is bent and extended relative to the main body (31); and the mounting portion (32) is used to mount the motor assembly on a frame of a rotary drilling rig.

8. The motor assembly according to claim 7, characterized in that: The first fixing seat (3) further comprises a reinforcing plate (33), wherein the reinforcing plate (33) is respectively connected to the main body (31) and the mounting portion (32) and is used for supporting the main body (31).

9. The motor assembly according to claim 1, characterized in that: The motor assembly further comprises a connection terminal (7), the connection terminal (7) being electrically connected to the motor (1), and the connection terminal (7) being used for docking with a control component for controlling the motor (1).

10. A rotary drilling rig, characterized in that: It comprises a frame and a motor assembly as claimed in any one of claims 1 to 9, wherein the motor assembly is mounted on the frame via the first fixing seat (3), the second fixing seat (4) and the third fixing seat (5).

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