Integrated driving device, electric cylinder and lifting equipment

Abstract

The utility model relates to the technical field of driving equipment, in particular to an integrated driving device, an electric cylinder and lifting equipment, the integrated driving device comprises a mounting shell, the mounting shell is connected with an executing mechanism, and an inner cavity used for mounting a driving mechanism and a braking mechanism is arranged in the mounting shell; the motor shaft is arranged in the inner cavity of the mounting shell, and one end of the motor shaft penetrates through the driving mechanism and is connected with the braking mechanism; and the control unit is arranged on the outer side of the mounting shell, and the control unit is electrically connected with the driving mechanism and the braking mechanism. The control unit is mounted on the outer side of the mounting shell, so that the control unit is convenient to detach, replace and mount, and the control unit is prevented from being heated to fail.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive equipment technical field especially, relates to an integrated drive device and electric cylinder, lifting equipment. BACKGROUND

[0002] Electric cylinder is often used in some high safety requirement industry, especially in the mechanical equipment of manual operation or auxiliary manual operation. The core components of electric cylinder include motor assembly, speed reducer assembly, linear unit, control unit etc., the main function is just through the control unit control motor start and stop, the motor drives the screw rod action through the speed reducer, converts the rotary motion into linear reciprocating motion, and can real-time feedback the running state of electric cylinder, in addition, the protection device is arranged in the motor assembly, ensures the safety of the staff while guaranteeing the high efficiency work.

[0003] When electric cylinder is used as drive equipment in lifting platform mechanism etc., the chassis needs to reserve larger space for placing drive unit, feedback unit etc., the existing integrated electric cylinder usually places the circuit board structure of drive unit above the motor, the high temperature when the motor works may influence even damage the function of drive unit, the control unit circuit arrangement of electric cylinder is relatively complex, electric cylinder usually needs to install different designed controller according to different functions, and most of the existing control unit circuits are arranged in the shell, thereby leading to difficult replacement and assembly of the control unit. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is that the existing integrated electric cylinder control unit is difficult to replace and assemble.

[0005] Therefore, the utility model provides an integrated drive device and electric cylinder, lifting equipment.

[0006] The utility model adopts the technical scheme that solves the technical problems:

[0007] An integrated drive device comprises,

[0008] A mounting shell is connected with an actuator, and an inner cavity for mounting a driving mechanism and a braking mechanism is arranged in the mounting shell;

[0009] A motor shaft is arranged in the inner cavity of the mounting shell, and one end of the motor shaft penetrates through the driving mechanism and is connected with the braking mechanism;

[0010] A control unit is arranged outside the mounting shell, and the control unit is electrically connected with the driving mechanism and the braking mechanism.

[0011] Further, a protective shell is arranged on the mounting shell, and the protective shell encloses a containing cavity for mounting the control unit outside the mounting shell.

[0012] Further, a window is arranged on the mounting shell for connecting the accommodating cavity with the inner cavity of the mounting shell, and the window is used for passing lines among the driving mechanism, the braking mechanism and the control unit.

[0013] Further, a heat dissipation plate is connected to the protective shell, and the heat dissipation plate is used for dissipating heat for the control unit.

[0014] Further, the control unit comprises a driving plate, a control plate and a capacitor plate, the driving plate is arranged close to the heat dissipation plate, and the control plate is located between the driving plate and the capacitor plate.

[0015] Further, a plurality of through holes are arranged on the mounting shell, the through holes connect the accommodating cavity with the external space, and the through holes are used for passing the three-phase wire harness.

[0016] An electric cylinder comprises

[0017] An actuator, and

[0018] The integrated driving device as described above is connected to the actuator and is used for driving the actuator to work.

[0019] Further, the actuator comprises,

[0020] A cylinder body, the bottom of the cylinder body is connected to the mounting shell;

[0021] An output shaft, the output shaft is rotatably arranged in the cylinder body, and one end of the output shaft penetrates through the bottom of the cylinder body and the mounting shell;

[0022] A gear transmission assembly, the gear transmission assembly is connected between the motor shaft and the output shaft to realize power transmission.

[0023] Further, the gear transmission assembly is arranged outside the mounting shell, and a speed reducer shell for covering the gear transmission assembly is connected to the mounting shell.

[0024] A lifting device, the lifting device takes the electric cylinder as described above as a driving source.

[0025] The control unit is arranged outside the mounting shell, so that the control unit is convenient to disassemble, replace and install, and the heat dissipation plate is additionally arranged on the protective shell outside the control unit to dissipate heat for the control unit, so that the control unit and the lines in the mounting shell are prevented from being damaged due to high temperature.

[0026] The utility model discloses, drive mechanism, brake mechanism integration all integration in the mounting shell of one body setting spares the installation procedure between motor and speed reducer, in the mounting shell, drive mechanism, brake mechanism all are connected on a motor shaft, thereby can spare the connecting component such as coupling and motor flange in this scheme, and connecting component is easy wearing spare, after spares the connecting component, not only cost can reduce, and the maintenance of electric cylinder is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model is further described below in combination with the drawings and examples.

[0028] Figure 1 It is the structure schematic diagram of electric cylinder with integrated drive device in the utility model.

[0029] Figure 2 It is the structure schematic diagram of the connecting relationship between electric cylinder and drive mechanism in the utility model.

[0030] Figure 3 It is the explosion drawing of the installation relationship between mounting shell and protective shell in the utility model.

[0031] Figure 4 It is the structure schematic diagram of integrated drive device in the utility model.

[0032] Figure 5 It is the structure schematic diagram of the installation relationship between control unit and drive mechanism in the utility model.

[0033] Figure 6 It is the structure schematic diagram of mounting shell in the utility model.

[0034] In the drawing: 1, actuating mechanism;11, cylinder body;12, piston rod;13, execution nut;14, safety nut;15, output shaft;2, drive mechanism;21, motor shaft;22, stator;23, rotor;3, brake mechanism;31, centrifugal brake seat;32, centrifugal brake;33, electromagnetic brake;4, control unit;41, capacitive plate;42, control board;43, drive board;44, heat sink;45, terminal post;5, mounting shell;51, window;52, through hole;53, plug;6, protective shell;7, speed reducer shell;8, gear transmission assembly. DETAILED DESCRIPTION

[0035] The utility model will be further explained in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, therefore it only shows the relevant components of the utility model.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Reference Figures 1-6 An electric cylinder includes an integrated drive unit and an actuator 1. Further, the integrated drive unit includes a drive mechanism 2, a braking mechanism 3, and a control unit 4.

[0039] Reference Figure 2 , 3 The actuator 1 is connected to a mounting housing 5 via a bearing seat. The mounting housing 5 is a one-piece casting, such as... Figure 6 As shown, the drive mechanism 2, the deceleration mechanism, and the braking mechanism 3 are all installed inside the mounting shell 5. The control unit 4 is installed on the outside of the mounting shell 5. The control unit 4 is covered by a protective shell 6, which encloses a receiving cavity on the outside of the mounting shell 5 for installing the control unit 4.

[0040] The actuator 1 includes a cylinder body 11, an output shaft 15, a piston rod 12, an actuator nut 13, and a safety nut 14. The output shaft 15 is rotatably connected inside the cylinder body 11 and passes through one end of the cylinder body 11 and a bearing housing. The output shaft 15 and the bearing housing are rotatably connected by a bearing, which can be a tapered roller bearing. The actuator nut 13 is threaded onto the output shaft 15, and the safety nut 14 is sleeved on the output shaft 15. Both the actuator nut 13 and the safety nut 14 are slidably connected inside the cylinder body 11 along the axial direction of the cylinder body 11 and are fixedly connected. The piston rod 12 is sleeved on the output shaft 15 and connected to the actuator nut 13. The piston rod 12 extends out of the cylinder port end of the cylinder body 11.

[0041] Reference Figure 3 , 5 A motor shaft 21 is installed inside the mounting housing 5. One end of the motor shaft 21 is a gear shaft, and the other end is a key shaft. The gear shaft end of the motor shaft 21 extends out of the mounting housing 5. A reducer housing 7 is provided on the top cover of the mounting housing 5. There is a mounting cavity between the reducer housing 7 and the mounting housing 5. A gear transmission assembly 8 is installed in the mounting cavity. The end of the output shaft 15 extends through the bearing seat into the reducer housing 7. The gear transmission assembly 8 is installed between the motor shaft 21 and the output shaft 15 for power transmission.

[0042] The motor shaft 21 passes through the drive mechanism 2 and is connected to the braking mechanism 3. The drive mechanism 2 includes a stator 22 and a rotor 23. The stator 22 is fixedly connected to the inner wall of the mounting housing 5. The stator 22 and the mounting housing 5 can be fixed by adhesive or heat fitting. The rotor 23 is rigidly fixedly connected to the motor shaft 21. The braking mechanism 3 includes a centrifugal brake 32 and an electromagnetic brake 33. The centrifugal brake 32 is located between the electromagnetic brake 33 and the drive mechanism 2. The mounting housing 5 is provided with a centrifugal brake 32 seat 31 for mounting the centrifugal brake 32. One end of the motor shaft 21, which is a keyed shaft, passes through the centrifugal brake 32 and is connected to the electromagnetic brake 33. The centrifugal brake 32 can rotate coaxially with the motor shaft 21 through the key. The electromagnetic brake 33 and the stator 22 are wired together from inside the mounting housing 5. When energized, the shaft loosens; when de-energized, the shaft engages.

[0043] The control unit 4 comprises drive circuit boards, i.e. a capacitor board 41, a control board 42 and a drive board 43, and the control unit 4 can realize the function of voltage inversion on hardware, and the client only needs to input a direct current power supply, which can be converted into an alternating current after inversion, the motor and the electromagnetic brake 33 are connected, and the motor starts to rotate. After burning the program, bus communication, intelligent control, analog input, motor operation control and related protection can be realized through the connector port. The drive board 43 is arranged away from the installation shell 5, the control board 42 is located between the capacitor board 41 and the drive board 43, the heat dissipation plate 44 is connected to the side of the protective shell 6 away from the installation shell 5, and the heat dissipation plate 44 is arranged close to the drive board 43. Since the drive board 43 generates a large amount of heat, the drive board 43 can be attached to the heat dissipation plate 44 through a heat-conducting pad, and the heat dissipation plate 44 is provided with a rib plate to accelerate heat dissipation.

[0044] The installation shell 5 is provided with a window 51 for connecting the accommodating cavity and the inner cavity of the installation shell 5, and the three-phase wire harness of the stator 22 is fixed on the drive circuit board through the window 51. The installation shell 5 is also provided with a plurality of through holes 52 for connecting the accommodating cavity and the external space, so as to facilitate the fastening or dismounting of the three-phase wire harness of the stator 22. The through holes 52 can be inserted with a plug 53 for plugging the through holes 52. The protective shell 6 is provided with a terminal post 45 for connecting an external power supply.

[0045] The utility model discloses a control unit 4 is installed on the outside of the installation shell 5, and the control unit 4 is convenient to dismount and install, and the heat dissipation plate 44 is additionally arranged on the protective shell 6 outside the control unit 4, and the control unit 4 is cooled, so that the control unit 4 and the internal circuit of the installation shell 5 do not appear the fault condition due to high temperature.

[0046] In the utility model, the drive mechanism 2 and the brake mechanism 3 are integrated in the installation shell 5, so that the installation process between the motor and the speed reducer is omitted, the drive mechanism 2 and the brake mechanism 3 are connected to the motor shaft 21 in the installation shell 5, so that the connecting parts such as the shaft coupling and the motor flange can be omitted in the scheme, the connecting parts are easy-to-wear parts, and after the connecting parts are omitted, not only the cost can be reduced, but also the maintenance of the electric cylinder is more convenient.

[0047] A lifting device can be a high-altitude operation platform, a crane or a scissor-type lifting machine. The lifting device uses the above-mentioned electric cylinder as a driving source.

[0048] When the lifting platform appears an emergency (such as sudden power failure) and needs to be lowered in an emergency, the speed reduction back-falling protection is needed, and the above-mentioned electric cylinder can play a good protection role.

[0049] When emergency occurs (such as sudden power failure), the electromagnetic brake 33 is closed to lock the motor shaft 21, at this time, the lifting platform is at a certain height position, which is dangerous, and needs to be lowered back as soon as possible, at this time, the manual release installed on the electric cylinder with the centrifugal brake 32 can be pulled, the electromagnetic brake 33 is opened accordingly, under the action of gravity acceleration, the electric cylinder starts to accelerate and retract, the motor rotates at a high speed, when the centrifugal force brought by the speed exceeds the pulling force of the spring of the centrifugal brake 32, the counterweight is thrown out and rubs against the inner wall of the centrifugal brake 32 cover, the kinetic energy is converted into heat energy, the speed is reduced and the platform is lowered back, ensuring the safety of the work.

[0050] The integrated drive device in the utility model can transmit the weighing signal to the control unit 4 and feedback in time, ensuring the safety of normal use.

[0051] Based on the above ideal embodiments of the utility model, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined by the scope of claims.

Claims

1. An integrated drive arrangement, characterized by The utility model relates to an integrated driving device, which comprises a mounting shell (5) connected with an actuator (1), an inner cavity in the mounting shell (5) for mounting a driving mechanism (2) and a braking mechanism (3); a motor shaft (21) arranged in the inner cavity of the mounting shell (5), one end of the motor shaft (21) penetrating through the driving mechanism (2) and being connected with the braking mechanism (3); a control unit (4) arranged outside the mounting shell (5), the control unit (4) being electrically connected with the driving mechanism (2) and the braking mechanism (3).

2. The integrated drive device of claim 1, wherein, The mounting shell (5) is provided with a protective shell (6) outside the mounting shell (5) to enclose a containing cavity for mounting the control unit (4).

3. The integrated drive device of claim 2, wherein, The mounting shell (5) is provided with a window (51) for connecting the containing cavity with the inner cavity of the mounting shell (5), the window (51) being used for passing lines between the driving mechanism (2), the braking mechanism (3) and the control unit (4).

4. The integrated drive device of claim 2, wherein, The protective shell (6) is connected with a heat dissipation plate (44) for dissipating heat for the control unit (4).

5. The integrated drive device of claim 4, wherein, The control unit (4) comprises a driving board (43), a control board (42) and a capacitor board (41), the driving board (43) being arranged close to the heat dissipation plate (44), the control board (42) being between the driving board (43) and the capacitor board (41).

6. The integrated drive of claim 2, wherein, The mounting shell (5) is provided with a plurality of through holes (52) for connecting the containing cavity with an external space, the through holes (52) being used for passing three-phase wire bundles.

7. An electric cylinder characterized by comprising: The utility model relates to an integrated driving device, which comprises an actuator (1), and the integrated driving device according to any one of claims 1-6 is connected with the actuator (1) and used for driving the actuator (1) to work.

8. The electric cylinder according to claim 7, characterized by The actuator (1) comprises a cylinder body (11) connected with the mounting shell (5) at the bottom; an output shaft (15) rotatably arranged in the cylinder body (11), one end of the output shaft (15) penetrating through the bottom of the cylinder body (11) and the mounting shell (5); a gear transmission assembly (8) connected between the motor shaft (21) and the output shaft (15) to realize power transmission.

9. The electric cylinder according to claim 8, characterized by The gear transmission assembly (8) is arranged outside the mounting shell (5), and a speed reducer shell (7) for covering the gear transmission assembly (8) is connected to the mounting shell (5).

10. An elevating apparatus characterized by The lifting device is driven by the electric cylinder according to claim 9.

Images