High-precision digital hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a high-precision digital hydraulic oil cylinder which comprises an oil cylinder body, a digital valve is fixedly arranged at one end of the oil cylinder body, a servo motor for driving the digital valve is fixedly installed on one side of the digital valve, and a clamping ring is connected to the surface of the servo motor in a clamped mode. A clamping ring is fixedly arranged at the bottom of the oil cylinder body, a rubber pad is fixedly arranged on the inner wall of the clamping ring, lug plates are fixedly arranged on the two sides of the top end of the clamping ring, a support is fixedly arranged at the bottom of the clamping ring, and a supporting assembly for supporting the oil cylinder body is arranged at the bottom of the oil cylinder body. The clamping ring is expanded and arranged on the servo motor in a sleeving mode, then the fastening bolt penetrates through the lug plate, the clamping ring can tightly hold the servo motor, installation is convenient, the supporting assembly can support the oil cylinder body and the digital valve, meanwhile, the clamping ring can be supported through the support, the supporting point of the servo motor is increased, and the servo motor can be stably supported; and the servo motor is not easy to shake in the working process.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field, concretely is a kind of high-precision digital hydraulic cylinder. BACKGROUND

[0002] Digital hydraulic cylinder is a kind of hydraulic cylinder with completely digitalized motion characteristics, using digital control technology, the movement of hydraulic cylinder is controlled by electric pulse signal, the frequency of electric pulse corresponds to the movement speed of oil cylinder, the number of electric pulse corresponds to the stroke of oil cylinder, this scalar control mode makes the precision of digital hydraulic cylinder much higher than traditional hydraulic element.

[0003] The application number thereof is "202420766735.4" and the "digital hydraulic cylinder" disclosed therein includes a cylinder body, an oil way valve seat is installed and connected at one end of the cylinder body, the other end of the oil way valve seat is installed and connected with a servo motor, a protection assembly is arranged at the connection position, the two sides of the oil way valve seat are installed and connected with one side of the cylinder body through oil supply assemblies, an oil cylinder flange is arranged at the other end of the cylinder body, and a piston rod is inserted and connected, when two first protection plates are stressed, they drive two groups of sliding blocks to slide on the surface of guide rods in sliding grooves, and press two groups of first springs in cooperation with the sliding grooves, two groups of fixed blocks at the top of the two first protection plates drive two groups of first push rods to move in the cavity slots at the two ends of two fixed rods, and press two groups of second springs, buffer the impact force from the two sides, protect the oil cylinder oil way pipeline, separate two groups of clamping joints from two groups of clamping holes, and rotate two first protection plates in cooperation with two groups of connecting holes on the surface of two groups of connecting shafts, to facilitate pipeline installation and replacement.

[0004] However, the above-mentioned method still has the following defects: the servo motor drives the oil way valve seat, which can ensure the control accuracy of the cylinder body, but the servo motor is installed on one side of the oil way valve seat, and the bottom end has no support, so the stability is poor, and the servo motor is easy to shake during work, which can reduce the working accuracy, the protection assembly can protect the oil way, but the protection assembly is not convenient to install and disassemble, and has poor compression resistance and is easy to deform, so the pressure is transmitted to the oil way, and the reliability is poor. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a high-precision digital hydraulic cylinder, which has the advantages of good stability and improved working accuracy, and solves the problems raised in the above background art.

[0006] The utility model provides a high accuracy digital hydraulic oil cylinder, including the oil cylinder body, one end of oil cylinder body is equipped with the digital valve fixedly, the one side fixed mounting of digital valve has the servo motor that drives it, the surface of servo motor is clamped and is connected with the snap ring, the inner wall of snap ring is equipped with rubber pad fixedly, both sides of snap ring top are equipped with the ear plate fixedly, the bottom of snap ring is equipped with the support fixedly, the bottom of oil cylinder body is equipped with the support assembly that supports it, the top of oil cylinder body is equipped with the oil pipe fixedly, the top of oil cylinder body and the top of digital valve are equipped with the card frame fixedly, the card frame clamping and being connected with the protection cover that provides protection to oil pipe, the inner wall of both sides of protection cover is equipped with the limiting component that limits it.

[0007] As a preferred technical scheme of the utility model, the support assembly includes a backing plate, four corners of the backing plate are provided with mounting holes, two support plates are welded on one side of the top end of the backing plate, a curved groove is formed in the top end of the support plate, the top end of the support plate is welded to the bottom of the oil cylinder body through the curved groove, a mounting plate is fixedly installed on the other side of the top end of the backing plate through screws, a cushion block is fixedly arranged on the top end of the mounting plate, and the top end of the cushion block is fixedly connected to the bottom end of the digital valve.

[0008] As a preferred technical scheme of the utility model, a positioning plate is fixedly arranged at the bottom end of the support, and the bottom end of the positioning plate is fixedly connected to one side of the top end of the backing plate through screws.

[0009] As a preferred technical scheme of the utility model, two reinforcing plates are fixedly arranged in the interior of the protection cover, a pipe groove is formed in the middle of the bottom end of the reinforcing plate, and the oil pipe is located in the interior of the pipe groove.

[0010] As a preferred technical scheme of the utility model, connectors are fixedly arranged at both ends of the oil pipe, and the top of the oil cylinder body and the top of the digital valve are fixedly connected to the two connectors respectively.

[0011] As a preferred technical scheme of the utility model, the limiting component includes a support block, the support block is fixedly connected to the interior of the protection cover through locking screws, two guide columns are slidingly connected to the support block, springs are arranged on the surface of the guide columns, a baffle is fixedly arranged at one end of the guide column, the springs are located between the baffle and the support block, a limiting plate is fixedly arranged on one side of the baffle, and a plate groove that is clamped with the limiting plate is formed in the inner wall of the top of one side of the card frame.

[0012] As a preferred technical scheme of the utility model, a push plate is fixedly arranged in the middle of the top end of the limiting plate, slide channels are formed in the two sides of the top end of the protection cover, and the push plate is slidingly connected to the slide channels.

[0013] As a preferred embodiment of this utility model, the top of the support block is provided with a threaded hole, the locking screw is threadedly connected to the threaded hole, and the top of the protective cover is provided with a through hole, the locking screw is inserted into the through hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By spreading the retaining ring, fitting it onto the servo motor, and then passing the fastening bolt through the ear plate, the retaining ring can hold the servo motor tightly, facilitating installation. While supporting the cylinder body and digital valve, the support assembly can also support the retaining ring through the support, increasing the servo motor's fulcrum and providing stable support. The rubber pad on the inner wall of the retaining ring can provide shock absorption for the servo motor, making it less prone to vibration during operation and improving working accuracy.

[0016] 2. By engaging the protective cover with the clamping frame, the clamping frame prevents the protective cover from shifting horizontally, and the limiting components prevent the protective cover from loosening and falling off, making it easy to install and disassemble. The protective cover provides all-round protection for the oil pipe. When the protective cover is under pressure, it can transmit the pressure to the cylinder body and digital valve. It is not easily deformed, which avoids the pressure being transmitted to the oil pipe and causing oil pipe damage, thus improving the protection effect of the oil pipe and ensuring high reliability. Attached Figure Description

[0017] Fig. 1 This is one of the structural schematic diagrams of this utility model;

[0018] Fig. 2 This is the second structural schematic diagram of the present invention;

[0019] Fig. 3 This is a schematic diagram of the exploded structure of this utility model;

[0020] Fig. 4 This is a schematic diagram of the internal structure of the protective cover of this utility model;

[0021] Fig. 5 This is a schematic diagram of the limiting component of this utility model.

[0022] In the diagram: 1. Cylinder body; 2. Digital valve; 3. Servo motor; 4. Snap ring; 5. Rubber pad; 6. Ear plate; 7. Support; 8. Positioning plate; 9. Support assembly; 901. Pad plate; 902. Support plate; 903. Curved groove; 904. Mounting plate; 905. Pad block; 10. Frame; 11. Oil pipe; 12. Connector; 13. Plate groove; 14. Protective cover; 15. Slide rail; 16. Limiting assembly; 1601. Support block; 1602. Guide post; 1603. Spring; 1604. Baffle; 1605. Limiting plate; 1606. Threaded hole; 1607. Push plate; 17. Reinforcing plate; 18. Pipe groove; 19. Through hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figs. 1-5 , high-precision digital hydraulic cylinder, including the oil cylinder body 1, the oil cylinder body 1 one end is fixedly arranged with digital valve 2, the one side of digital valve 2 is fixedly installed with the servo motor 3 that drives it, the surface of servo motor 3 is clamped and is connected with snap ring 4, the inner wall of snap ring 4 is fixedly arranged with rubber pad 5, the both sides of the top of snap ring 4 are fixedly arranged with ear plate 6, by straining snap ring 4, it is set on servo motor 3, again fastening bolt is passed through ear plate 6, can make snap ring 4 tightly servo motor 3, it is convenient to install, the bottom of snap ring 4 is fixedly arranged with support 7, the bottom of oil cylinder body 1 is provided with the support assembly 9 that supports it, support assembly 9 is supported while oil cylinder body 1 and digital valve 2, can be supported snap ring 4 through support 7, namely servo motor 3 can be stably supported, increase servo motor 3 fulcrum, the rubber pad 5 of snap ring 4 inner wall can provide shock absorption for servo motor 3, servo motor 3 is not easy to shake in the process of working, the top of oil cylinder body 1 is fixedly arranged with oil pipe 11, the top of oil cylinder body 1 and the top of digital valve 2 are fixedly arranged with clamping frame 10, clamping frame 10 is clamped and is connected with the protective cover 14 that protects oil pipe 11, the inner wall of both sides of protective cover 14 is provided with the limiting assembly 16 that limits it;

[0025] In the embodiment, preferably, the support assembly 9 includes a base plate 901, the four corners of the base plate 901 are provided with mounting holes, two support plates 902 are welded on one side of the top end of the base plate 901, the top end of each support plate 902 is provided with a curved groove 903, the top end of each support plate 902 is welded to the bottom of the oil cylinder body 1 through the curved groove 903, an installation plate 904 is fixedly installed on the other side of the top end of the base plate 901 through screws, the top end of the installation plate 904 is fixedly provided with a cushion block 905, the top end of the cushion block 905 is fixedly connected to the bottom end of the digital valve 2, the cushion block 905 can be fixed on the base plate 901 through the installation plate 904, the base plate 901 can support the oil cylinder body 1 and the digital valve 2 through the support plates 902 and the cushion block 905, and the whole is good in integrity, the bottom end of the support 7 is fixedly provided with a positioning plate 8, the bottom end of the positioning plate 8 is fixedly connected to one side of the top end of the base plate 901 through screws, the bottom end of the support 7 can be fixed on the base plate 901 through the positioning plate 8, and the support 7 is convenient to install and disassemble;

[0026] In the embodiment, preferably, the limiting assembly 16 comprises a supporting block 1601 fixedly connected with the inside of the protective cover 14 through a locking screw, the supporting block 1601 is slidingly connected with two guide columns 1602, the surface of the guide column 1602 is sleeved with a spring 1603, one end of the guide column 1602 is fixedly provided with a baffle 1604, the spring 1603 is located between the baffle 1604 and the supporting block 1601, one side of the baffle 1604 is fixedly provided with a limiting plate 1605, the inner wall of the top of one side of the clamping frame 10 is provided with a plate groove 13 matched with the limiting plate 1605, the middle of the top of the limiting plate 1605 is fixedly provided with a push plate 1607, both sides of the top of the protective cover 14 are provided with a slide 15, the push plate 1607 is slidingly connected with the slide 15, the top of the supporting block 1601 is provided with a threaded hole 1606, the locking screw is threadedly connected with the threaded hole 1606, the top of the protective cover 14 is provided with a through hole 19, the locking screw is penetratingly connected with the through hole 19, the supporting block 1601 can be fixedly installed by penetrating the locking screw through the through hole 19 and screwing into the threaded hole 1606, the supporting block 1601 can support and guide the guide column 1602, the limiting plate 1605 can be prevented from tilting, the spring 1603 can stabilize the limiting plate 1605 in the plate groove 13 of the clamping frame 10, so that the protective cover 14 can be locked and prevented from loosening and falling off;

[0027] In the embodiment, preferably, the inside of the protective cover 14 is fixedly provided with two reinforcing plates 17, the middle of the bottom end of the reinforcing plate 17 is provided with a pipe groove 18, the oil pipe 11 is located in the inside of the pipe groove 18, the inside of the protective cover 14 can be reinforced through the reinforcing plate 17, the anti-deformation ability of the protective cover 14 is improved, the pipe groove 18 can prevent the oil pipe 11 from contacting the reinforcing plate 17, both ends of the oil pipe 11 are fixedly provided with a joint 12, the top of the oil cylinder body 1 and the top of the digital valve 2 are fixedly connected with the two joints 12 respectively, the oil pipe 11 can be connected through the joint 12.

[0028] In use, the staff first spreads the clamping ring 4, sets the clamping ring 4 on the servo motor 3, penetrates the fastening bolt through the ear plate 6 and tightens the nut, so that the clamping ring 4 tightly holds the servo motor 3, then fixes the positioning plate 8 on the pad plate 901 of the supporting assembly 9 through the screw, after the support 7 is fixed, the staff pushes the push plate 1607 of the two limiting assemblies 16, makes the baffle 1604 compress the spring 1603, drives the limiting plate 1605 to shrink, then makes the two sides of the protective cover 14 respectively clamped with the two clamping frames 10, the clamping frame 10 can prevent the horizontal displacement of the protective cover 14, finally loosens the push plate 1607, the spring 1603 pushes the limiting plate 1605 into the inside of the plate groove 13, so that the vertical direction of the protective cover 14 is limited, which can prevent it from loosening and falling off;

[0029] When the servo motor 3 drives the digital valve 2, the digital valve 2 can control the piston rod movement of the oil cylinder body 1, the gasket plate 901 can support the clasp ring 4 through the support 7, the servo motor 3 fulcrum is increased, the servo motor 3 can be stably supported, the rubber pad 5 of the inner wall of the clasp ring 4 can provide shock absorption for the servo motor 3, the servo motor 3 is not easy to shake in the working process, accurate position control is realized, the protective cover 14 can provide all-round protection for the oil pipe 11, the reinforcing plate 17 inside the protective cover 14 can improve the strength thereof, when the protective cover 14 is subjected to pressure, the pressure can be transmitted to the oil cylinder body 1 and the digital valve 2, deformation is not easy, the pressure is avoided to be transmitted to the oil pipe 11, the oil pipe 11 is avoided to be damaged, and the protection effect on the oil pipe 11 can be improved.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision digital hydraulic cylinder comprising a cylinder body (1), characterized in that: One end of the oil cylinder body (1) is fixedly provided with a digital valve (2), one side of the digital valve (2) is fixedly provided with a servo motor (3), the surface of the servo motor (3) is clamped and connected with a snap ring (4), the inner wall of the snap ring (4) is fixedly provided with a rubber pad (5), the top of the snap ring (4) is fixedly provided with an ear plate (6) on both sides, the bottom of the snap ring (4) is fixedly provided with a support (7), the bottom of the oil cylinder body (1) is provided with a support assembly (9), the top of the oil cylinder body (1) is fixedly provided with an oil pipe (11), the top of the oil cylinder body (1) and the top of the digital valve (2) are fixedly provided with a clamping frame (10), the clamping frame (10) is clamped and connected with a protective cover (14), the inner wall of both sides of the protective cover (14) is provided with a limiting assembly (16).

2. The high precision digital hydraulic cylinder of claim 1, wherein: The support assembly (9) comprises a backing plate (901), four corners of the backing plate (901) are provided with mounting holes, one side of the top of the backing plate (901) is welded with two support plates (902), the top of the support plate (902) is provided with a curved groove (903), the top of the support plate (902) is welded with the bottom of the oil cylinder body (1) through the curved groove (903), the other side of the top of the backing plate (901) is fixedly provided with a mounting plate (904), the top of the mounting plate (904) is fixedly provided with a pad (905), the top of the pad (905) is fixedly connected with the bottom of the digital valve (2).

3. The high precision digital hydraulic cylinder of claim 2, wherein: The bottom of the support (7) is fixedly provided with a positioning plate (8), the bottom of the positioning plate (8) is fixedly connected with one side of the top of the backing plate (901).

4. The high precision digital hydraulic cylinder of claim 1, wherein: The inside of the protective cover (14) is fixedly provided with two reinforcing plates (17), the middle of the bottom of the reinforcing plate (17) is provided with a pipe groove (18), and the oil pipe (11) is located in the inside of the pipe groove (18).

5. The high precision digital hydraulic cylinder of claim 1, wherein: Both ends of the oil pipe (11) are fixedly provided with connectors (12), and the top of the oil cylinder body (1) and the top of the digital valve (2) are fixedly connected with the two connectors (12) respectively.

6. The high precision digital hydraulic cylinder of claim 1, wherein: The limiting assembly (16) comprises a support block (1601), the support block (1601) is fixedly connected with the inside of the protective cover (14), the support block (1601) is slidingly connected with two guide columns (1602), the surface of the guide column (1602) is sleeved with a spring (1603), one end of the guide column (1602) is fixedly provided with a baffle (1604), the spring (1603) is located between the baffle (1604) and the support block (1601), one side of the baffle (1604) is fixedly provided with a limiting plate (1605), and the inner wall of the top of one side of the clamping frame (10) is provided with a plate groove (13) clamped with the limiting plate (1605).

7. The high precision digital hydraulic cylinder of claim 6, wherein: The middle of the top of the limiting plate (1605) is fixedly provided with a push plate (1607), both sides of the top of the protective cover (14) are provided with a slide (15), and the push plate (1607) is slidingly connected with the slide (15).

8. The high precision digital hydraulic cylinder of claim 6, wherein: The top of the support block (1601) is provided with a threaded hole (1606), and the top of the protective cover (14) is provided with a through hole (19).

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