Servo motor driving mechanism of digital hydraulic oil cylinder

Abstract

The utility model relates to the technical field of digital hydraulic oil cylinders, and discloses a servo motor driving mechanism of a digital hydraulic oil cylinder, which comprises an oil cylinder body, a valve core rotating shaft is rotatably arranged in the oil cylinder body, a transmission box is arranged at the bottom end of the oil cylinder body, and a bottom plate is arranged at the bottom end of the transmission box. A servo motor is arranged on one side of the top end of the transmission box, a transmission structure is arranged in the transmission box, a protective cover is arranged outside the servo motor, and a heat dissipation groove is formed in one side of the protective cover; according to the oil cylinder, the servo motor is arranged outside the oil cylinder body, compared with a traditional mode that the servo motor is arranged inside the oil cylinder body, the servo motor is convenient to overhaul, the oil cylinder body does not need to be disassembled, overhaul is more convenient and fast, and meanwhile heat generated by working of the servo motor can be prevented from being accumulated inside the oil cylinder body.

Description

TECHNICAL FIELD

[0001] The utility model relates to digital hydraulic cylinder technical field, concretely is a kind of servo motor drive mechanism of digital hydraulic cylinder. BACKGROUND

[0002] Digital hydraulic cylinder is the hydraulic energy conversion into mechanical energy, does linear reciprocating motion hydraulic actuator, it simple structure, work reliable, therefore in the hydraulic system of various machines is widely used;

[0003] After searching, the servo hydraulic cylinder with damping function disclosed in application No.202420268220.1 includes a shell and a clamping assembly, the shell right side is provided with a limiting connected clamping assembly;The utility model discloses through setting up clamping assembly makes when staff needs to replace and maintain damping mechanism, manually pushes sleeve, removes the limiting of limiting ball, shell takes down fixed pipe, then it is replaced, to meet the maintenance demand of device, the whole process is convenient to operate, convenient for staff to implement;

[0004] But the above-mentioned mode still has following defects when actual use: its servo motor is arranged in the interior of oil cylinder, when needing to overhaul servo motor, the whole oil cylinder needs to be disassembled, and the heat generated when servo motor works is prone to accumulate in the interior of oil cylinder. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of servo motor drive mechanism of digital hydraulic cylinder, with the effect that it is convenient to overhaul servo motor, and it is beneficial to the heat dissipation of servo motor.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a kind of servo motor drive mechanism of digital hydraulic cylinder, including oil cylinder body, the inside rotation of the oil cylinder body is equipped with valve core rotating shaft, the bottom of the oil cylinder body is equipped with transmission box, the bottom of the transmission box is equipped with bottom plate, one side of the top of the transmission box is equipped with servo motor, the inside of the transmission box is equipped with transmission structure, so that servo motor controls valve core rotating shaft to rotate, the outside of the servo motor is equipped with protective cover, one side of the protective cover is equipped with heat dissipation groove, and one side of the protective cover is embedded with dust screen corresponding with heat dissipation groove.

[0007] The further setting of the utility model discloses: transmission structure includes transmission bevel gear no. 1, transmission rod, transmission bevel gear no. 2, transmission bevel gear no. 3 and transmission bevel gear no. 4, transmission bevel gear no. 1, transmission bevel gear no. 1 fixedly arranged at the bottom of valve core rotating shaft, transmission rod rotationally arranged in the inside of transmission box, transmission bevel gear no. 2 fixedly arranged at one end of transmission rod, and it is engaged with transmission bevel gear no. 1, transmission bevel gear no. 3 fixedly arranged at the other end of transmission rod, transmission bevel gear no. 4 fixedly arranged at the end of transmission shaft of servo motor, and it is engaged with transmission bevel gear no. 3.

[0008] The further setting of the utility model discloses: the bottom end of transmission box is fixedly provided with mounting plate no. 1, and the mounting plate no. 1 is connected with the top end of bottom plate through mounting screw, four corners of mounting plate no. 1 are all provided with mounting groove, and mounting hole is arranged on the surface of mounting groove.

[0009] The further setting of the utility model discloses: the bottom end of bottom plate is provided with mounting seat, the top end of mounting seat is fixedly provided with fixed plate, and the fixed plate is connected with the bottom end of bottom plate through fixed screw.

[0010] The further setting of the utility model discloses: the bottom end of protective cover is fixedly provided with mounting plate no. 2, and the mounting plate no. 2 is connected with the top end of transmission box through mounting screw.

[0011] The further setting of the utility model discloses: one side of protective cover is provided with dustproof groove, dust screen is embedded in the inside of dustproof groove, and slot is arranged on the surface of dust screen.

[0012] The further setting of the utility model discloses: one side of protective cover is provided with limiting seat, one side of limiting seat is fixedly provided with connecting rod, and one end of connecting rod is rotatably connected with one side of protective cover through damping bearing.

[0013] In conclusion, the utility model has the following beneficial effects: the utility model discloses that servo motor is arranged outside oil cylinder body, relative to traditional arrangement inside oil cylinder body, is convenient for overhauling servo motor, does not need to disassemble oil cylinder body, and overhauling is more convenient, can also prevent heat generated during the operation of servo motor from accumulating inside oil cylinder body, the transmission structure can drive valve core rotating shaft to rotate when servo motor works, thereby controlling the axial movement of valve core inside oil cylinder body, and the transmission box is arranged as detachable structure, which is convenient for overhauling the transmission structure inside transmission box. ACCURACY OF DRAWINGS

[0014] Fig. 1 It is one of three-dimensional structure schematic diagram of the utility model;

[0015] Fig. 2The three-dimensional structure schematic diagram two of the utility model;

[0016] Fig. 3 The explosion structure schematic diagram one of the utility model;

[0017] Fig. 4 The explosion structure schematic diagram two of the utility model;

[0018] Fig. 5 The utility model Fig. 2 A place amplification structure schematic diagram.

[0019] In the figure: 1, oil cylinder body; 101, valve core rotating shaft; 102, transmission bevel gear one; 2, transmission box; 201, mounting plate one; 202, transmission rod; 203, transmission bevel gear two; 204, transmission bevel gear three; 3, servo motor; 301, transmission bevel gear four; 302, protective cover; 303, mounting plate two; 304, dust groove; 305, heat dissipation groove; 306, dust screen; 307, connecting rod; 308, limit seat; 4, bottom plate; 401, mounting seat; 402, fixed plate. Specific implementation

[0020] The utility model will be further explained in connection with the drawings in the embodiment of the utility model.

[0021] Please refer to Figs. 1-5 , a kind of servo motor drive mechanism of digital hydraulic oil cylinder in the utility model embodiment, including oil cylinder body 1, valve core rotating shaft 101 is rotationally arranged in the inside of oil cylinder body 1, valve core is arranged on the surface of valve core rotating shaft 101, utilize the rotation of valve core rotating shaft 101 to control valve core to carry out synchronous axial movement, the bottom of oil cylinder body 1 is equipped with transmission box 2, the bottom of transmission box 2 is equipped with bottom plate 4, one side of transmission box 2 top is equipped with servo motor 3, transmission structure is arranged in the inside of transmission box 2, so that servo motor 3 controls valve core rotating shaft 101 to rotate, when servo motor 3 works, it can drive valve core rotating shaft 101 to rotate, protective cover 302 is arranged on the outside of servo motor 3, one side of protective cover 302 is equipped with heat dissipation groove 305, the heat generated when servo motor 3 works in the inside of protective cover 302 can be dissipated, and one side of protective cover 302 is embedded with dust screen 306 corresponding with heat dissipation groove 305, dust in the air is blocked, while guaranteeing ventilation, prevent the entry of dust.

[0022] In the embodiment, preferably, the transmission structure comprises transmission bevel gear one 102, transmission rod 202, transmission bevel gear two 203, transmission bevel gear three 204 and transmission bevel gear four 301, the transmission bevel gear one 102 is fixedly arranged at the bottom of the valve core rotating shaft 101, the transmission rod 202 is rotatably arranged in the transmission box 2, both ends of the transmission rod 202 are rotatably connected with the inner wall of the transmission box 2 through bearings, the transmission bevel gear two 203 is fixedly arranged at one end of the transmission rod 202 and is in meshing connection with the transmission bevel gear one 102, the transmission bevel gear three 204 is fixedly arranged at the other end of the transmission rod 202, the transmission bevel gear four 301 is fixedly arranged at the end of the transmission shaft of the servo motor 3 and is in meshing connection with the transmission bevel gear three 204, and the transmission shaft of the servo motor 3 penetrates through the top end of the transmission box 2, a through hole corresponding to the transmission shaft of the servo motor 3 is arranged at the top end of the transmission box 2, the transmission shaft of the servo motor 3 does not interfere with the rotation, the transmission bevel gear four 301 is driven to rotate when the servo motor 3 works, the transmission rod 202 is driven to rotate under the meshing cooperation of the transmission bevel gear four 301 and the transmission bevel gear three 204, the transmission bevel gear two 203 is driven to rotate, and the valve core rotating shaft 101 is driven to rotate under the meshing cooperation of the transmission bevel gear two 203 and the transmission bevel gear one 102, so as to control the axial movement of the valve core in the oil cylinder body 1 and control the extension and retraction of the piston rod of the oil cylinder body 1.

[0023] In the embodiment, preferably, the bottom end of the transmission box 2 is fixedly provided with a mounting plate one 201, the mounting plate one 201 is connected with the top end of the bottom plate 4 through mounting screws, the transmission box 2 is convenient to disassemble, the internal transmission structure is convenient to overhaul, four corners of the mounting plate one 201 are provided with mounting grooves, mounting holes are arranged on the surfaces of the mounting grooves, and the position of the bottom plate 4 is convenient to mount and limit.

[0024] In the embodiment, preferably, the bottom end of the bottom plate 4 is provided with a mounting seat 401, the top end of the mounting seat 401 is fixedly provided with a fixed plate 402, the fixed plate 402 is connected with the bottom end of the bottom plate 4 through fixing screws, the mounting seat 401 is convenient to quickly disassemble and assemble, and the mounting seat 401 can be quickly connected with other structures;

[0025] In the embodiment, preferably, the bottom end of the protective cover 302 is fixedly provided with a mounting plate two 303, the mounting plate two 303 is connected with the top end of the transmission box 2 through mounting screws, the protective cover 302 is convenient to quickly disassemble and assemble, and the internal servo motor 3 is convenient to overhaul;

[0026] In the embodiment, preferably, one side of the protective cover 302 is provided with a dustproof groove 304, a dust screen 306 is embedded in the dustproof groove 304, and a slot is arranged on the surface of the dust screen 306, and the dust screen 306 is convenient to disassemble and assemble.

[0027] In the embodiment, preferably, the protective cover 302 is provided with limiting seats 308 on one side, the limiting seats 308 are provided with four and symmetrically arranged, one side of the limiting seat 308 is fixedly provided with a connecting rod 307, one end of the connecting rod 307 is rotatably connected with one side of the protective cover 302 through a damping bearing, the position of the limiting seat 308 can be adjusted by rotating the connecting rod 307, so that the position of the dust screen 306 is limited or released.

[0028] In use, first, the servo motor 3 is controlled to work, the transmission shaft of the servo motor 3 rotates to drive the transmission bevel gear four 301 to rotate, the transmission bevel gear four 301 drives the transmission rod 202 to rotate under the meshing cooperation with the transmission bevel gear three 204, thereby driving the transmission bevel gear two 203 to rotate, the transmission bevel gear two 203 drives the valve core rotating shaft 101 to rotate under the meshing cooperation with the transmission bevel gear one 102, (the valve core is driven to rotate through the key groove in the oil cylinder body 1, then the screw rod on the screw nut is rotated through the universal joint, since the nut on the screw nut cannot rotate, the axial movement of the valve core is generated, thereby switching the oil way and moving the piston rod), the above is the working principle of the existing digital hydraulic cylinder, which is not described in detail in the specification; the protective cover 302 arranged can protect the servo motor 3 inside, the heat dissipation groove 305 arranged can dissipate the heat generated by the servo motor 3 inside the protective cover 302 when working, and the dust screen 306 corresponding to the heat dissipation groove 305 is embedded on one side of the protective cover 302, which blocks the dust in the external air, prevents the dust from entering while ensuring ventilation, and the dust screen 306 is limited by the rotating limiting seat 308, which is convenient for disassembling, assembling and replacing the dust screen 306.

[0029] The above only describes the preferred embodiments of the present application, and equivalent changes or modifications made according to the structure, features and principles of the present application patent application range are included in the present application patent application range.

Claims

1. A servo motor drive mechanism for a digital hydraulic cylinder comprising a cylinder body (1), characterized in that, The inside of the oil cylinder body (1) is provided with a valve core rotating shaft (101), the bottom end of the oil cylinder body (1) is provided with a transmission box (2), the bottom end of the transmission box (2) is provided with a bottom plate (4), one side of the top end of the transmission box (2) is provided with a servo motor (3), the inside of the transmission box (2) is provided with a transmission structure, so that the servo motor (3) controls the valve core rotating shaft (101) to rotate, the outside of the servo motor (3) is provided with a protective cover (302), one side of the protective cover (302) is provided with a heat dissipation groove (305), and one side of the protective cover (302) is embedded with a dust screen (306) corresponding to the heat dissipation groove (305).

2. The servo motor drive mechanism for a digital hydraulic cylinder of claim 1, wherein: The transmission structure comprises a transmission bevel gear one (102), a transmission rod (202), a transmission bevel gear two (203), a transmission bevel gear three (204) and a transmission bevel gear four (301), the transmission bevel gear one (102) is fixedly arranged at the bottom of the valve core rotating shaft (101), the transmission rod (202) is rotatably arranged in the transmission box (2), the transmission bevel gear two (203) is fixedly arranged at one end of the transmission rod (202) and is in meshing connection with the transmission bevel gear one (102), the transmission bevel gear three (204) is fixedly arranged at the other end of the transmission rod (202), and the transmission bevel gear four (301) is fixedly arranged at the end of the transmission shaft of the servo motor (3) and is in meshing connection with the transmission bevel gear three (204).

3. The servo motor drive mechanism for a digital hydraulic cylinder of claim 1, wherein: The bottom end of the transmission box (2) is fixedly provided with a mounting plate one (201), the mounting plate one (201) is connected with the top end of the bottom plate (4) through mounting screws, and four corners of the mounting plate one (201) are provided with mounting grooves, and mounting holes are arranged on the surfaces of the mounting grooves.

4. The servo motor drive mechanism for a digital hydraulic ram as set forth in claim 1, wherein: The bottom end of the bottom plate (4) is provided with a mounting seat (401), the top end of the mounting seat (401) is fixedly provided with a fixed plate (402), and the fixed plate (402) is connected with the bottom end of the bottom plate (4) through fixing screws.

5. The servo motor drive mechanism for a digitally hydraulically cylinder of claim 1, wherein: The bottom end of the protective cover (302) is fixedly provided with a mounting plate two (303), and the mounting plate two (303) is connected with the top end of the transmission box (2) through mounting screws.

6. The servo motor drive mechanism for a digitally hydraulically cylinder of claim 1, wherein: One side of the protective cover (302) is provided with a dustproof groove (304), the dust screen (306) is embedded in the inside of the dustproof groove (304), and a notch is arranged on the surface of the dust screen (306).

7. The servo motor drive mechanism for a digitally hydraulically cylinder of claim 1, wherein: One side of the protective cover (302) is provided with a limiting seat (308), one side of the limiting seat (308) is fixedly provided with a connecting rod (307), and one end of the connecting rod (307) is rotatably connected with one side of the protective cover (302) through a damping bearing.

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