Fastening device of hydraulic system

Abstract

The utility model relates to a fastening device of a hydraulic system, the hydraulic system comprises a piston rod and a movable plate, the movable plate is fixedly arranged on the driving end of the piston rod, and the movable plate is used for applying pressure to an acting object; the fastening device comprises an electric push rod and an abutting assembly. The electric push rod is fixedly arranged on the mounting frame, and the driving direction of the electric push rod is consistent with that of the piston rod; the abutting assembly is fixedly arranged at the driving end of the electric push rod and elastically abuts against the movable plate. According to the application, when the hydraulic system drives the movable rod to apply design pressure to the acting object; the electric push rod drives the abutting assembly to follow up synchronously, so that the abutting assembly tightly abuts against the movable plate, the fastening device can assist the movable plate in applying pressure to an acting object, and therefore the hydraulic oil amount and pressure input by the hydraulic system to the hydraulic cylinder are reduced, the working load of the hydraulic system is reduced, and the probability that heavy parts of the hydraulic system are damaged is reduced. The fault rate of the hydraulic system is reduced.

Description

Technical Field

[0001] This application relates to the field of hydraulic equipment, and particularly to a fastening device for a hydraulic system. Background Art

[0002] A hydraulic device is a system that uses liquid pressure to transfer energy and perform work. The hydraulic device uses hydraulic oil as the working medium and utilizes the pressure of the liquid to transfer power. Specifically, the hydraulic device includes a power element (hydraulic pump) and an actuator (hydraulic cylinder). The hydraulic pump converts mechanical energy into the pressure energy of hydraulic oil and provides power to the system. The hydraulic cylinder (also called oil cylinder) converts the pressure energy of hydraulic oil into mechanical energy to achieve linear motion.

[0003] The hydraulic cylinder includes a cylinder block, a piston, and a piston rod. The piston is disposed inside the cylinder block. The hydraulic pump inputs the pressure of hydraulic oil into the piston to push the piston to perform linear reciprocating motion inside the cylinder block. One end of the piston rod is fixedly connected to the piston, and a movable plate is fixed to the other end of the piston. The movable plate is used to abut against the object to be acted upon. Thus, the piston pushes the piston rod and the movable plate to perform linear motion to apply pressure to the object to be acted upon.

[0004] When the object to be acted upon needs to maintain pressure or maintain a certain pressure for a certain period of time, it is necessary for the hydraulic pump to continuously output hydraulic oil into the hydraulic cylinder to provide kinetic energy to the hydraulic cylinder to maintain pressure balance and supplement. However, this will bring a large working load to the hydraulic pump; and the cylinder block of the hydraulic cylinder and other components need to bear pressure for a long time, resulting in easy damage to the equipment components, thereby increasing the failure rate of the equipment. Utility Model Content

[0005] In order to reduce the working burden of the hydraulic system and lower the failure rate of the equipment, this application provides a fastening device for a hydraulic system.

[0006] The fastening device for a hydraulic system provided by this application adopts the following technical solution:

[0007] A fastening device for a hydraulic system, the hydraulic system includes a piston rod and a movable plate. The movable plate is fixedly arranged on the driving end of the piston rod. The piston rod drives the movable plate to perform linear reciprocating motion. The movable plate is used to apply pressure to the object to be acted upon;

[0008] The fastening device includes an electric push rod and an abutting assembly; the electric push rod is fixedly arranged on the mounting bracket, and the driving direction of the electric push rod is consistent with the driving direction of the piston rod; the abutting assembly is fixedly arranged on the driving end of the electric push rod, and the abutting assembly elastically abuts against the movable plate.

[0009] By adopting the above technical solution, when the hydraulic system drives the movable rod to move towards the acting object so that the movable plate applies the designed pressure to the acting object; the electric push rod drives the abutting assembly to follow up synchronously, so that the abutting assembly is in close contact with the movable plate, and the fastening device has a pressure maintaining effect on the movable plate. The fastening device can assist the movable plate to apply pressure to the acting object, thereby reducing the hydraulic oil volume and pressure input by the hydraulic system into the hydraulic cylinder, reducing the working load of the hydraulic system, reducing the probability of damage to heavy components of the hydraulic system, and reducing the failure rate of the hydraulic system.

[0010] Optionally, the abutting assembly includes a first steel plate, a second steel plate, a guide rod, a limiting column and a spring; there are several guide rods, and the several guide rods are arranged at intervals between the first steel plate and the second steel plate. One end of the guide rod is fixedly connected to the first steel plate, and the second steel plate is provided with a limiting hole for the guide rod to pass through; the second steel plate is fixedly connected to the driving end of the electric push rod, and the first steel plate is arranged on the side of the second steel plate away from the electric push rod; the limiting column is arranged between the first steel plate and the second steel plate, and there is a clearance distance between the other end of the limiting column and the first steel plate; the spring is sleeved on the outer periphery of the limiting column, and the spring abuts against the first steel plate and the second steel plate.

[0011] By adopting the above technical solution, after the electric push rod drives the first steel plate to abut against the movable plate, the driving end of the electric push rod continues to move towards the acting object, so that the first steel plate and the second steel plate squeeze the spring, causing the spring to be compressed and deformed, and applying a force to the movable plate; thereby realizing the pressure maintaining effect of the fastening device on the acting object to reduce the working load of the hydraulic system and reduce the failure rate of the hydraulic system.

[0012] Optionally, it further includes a limiting member, and the limiting member is arranged on the guide rod and on the side of the second steel plate away from the first steel plate.

[0013] By adopting the above technical solution, through the cooperation of the limit and the guide rod, the positions of the first steel plate and the second steel plate are limited, thereby improving the operation stability of the fastening device.

[0014] Optionally, the limiting member is a limiting nut, the guide rod is provided with a threaded section that cooperates with the limiting nut, and the limiting nut is threadedly connected to the guide rod.

[0015] By adopting the above technical solution, the limiting nut is threadedly connected to the guide rod, thereby facilitating the installation of the abutting assembly by the staff.

[0016] Optionally, there is a clearance gap between the threaded section and the second steel plate.

[0017] By adopting the above technical solutions,

[0018] Optionally, the limit nut includes a first limit nut and a second limit nut, and the first limit nut is fixedly abutted against the second limit nut.

[0019] By adopting the above technical solutions, by setting the first limit nut and the second limit nut, the loosening of the first limit nut and the second limit nut is reduced, and the operating stability of the fastening device is improved.

[0020] Optionally, it further includes an anti-slip rubber pad, and the anti-slip rubber pad is fixedly arranged on the side of the first steel plate away from the second steel plate, and the anti-slip rubber pad is used to abut against the movable plate.

[0021] By adopting the above technical solutions, by arranging the anti-slip rubber pad on the first steel plate, when the first steel plate applies pressure to the movable plate, the slippage between the first steel plate and the movable plate can be reduced to reduce the damage to the guide rod; at the same time, the anti-slip rubber pad also plays a buffering effect to reduce the impact strength between the first steel plate and the movable plate.

[0022] Optionally, the abutting assembly includes a third steel plate and an abutting rubber pad, the third steel plate is fixedly connected to the driving end of the electric push rod, the abutting rubber pad is adhesively fixed on the side of the third steel plate away from the electric push rod, and the abutting rubber pad is used to abut against the movable plate.

[0023] By adopting the above technical solutions, the electric push rod drives the third steel plate and the abutting rubber pad to move towards the acting object, so that the abutting rubber pad abuts against the movable plate, thereby using the acting force of the fastening device on the movable plate to maintain the pressure holding effect of the hydraulic system on the acting object while reducing the working load of the hydraulic system and reducing the failure rate of the hydraulic system.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. After the hydraulic system drives the movable rod to apply the designed pressure to the acting object; the electric push rod drives the abutting assembly to follow up synchronously, so that the abutting assembly is closely abutted against the movable plate, and the fastening device can assist the movable plate to apply pressure to the acting object, thereby reducing the hydraulic oil volume and pressure input by the hydraulic system into the hydraulic cylinder, reducing the working load of the hydraulic system, reducing the probability of damage to the heavy parts of the hydraulic system, and reducing the failure rate of the hydraulic system;

[0026] 2. After the electric push rod drives the first steel plate to abut against the movable plate, the driving end of the electric push rod continues to move towards the acting object, so that the first steel plate and the second steel plate squeeze the spring, causing the spring to be compressed and deformed, and applying a force to the movable plate; thereby realizing the pressure holding effect of the fastening device on the acting object to reduce the working load of the hydraulic system and reduce the failure rate of the hydraulic system;

[0027] 3. By providing an anti-slip rubber pad on the first steel plate, when the first steel plate applies pressure to the movable plate, the slip between the first steel plate and the movable plate can be reduced, thereby reducing the damage to the guide rod. At the same time, the anti-slip rubber pad also has a buffering effect, reducing the impact strength between the first steel plate and the movable plate. Description of the Drawings

[0028] Figure 1 It is a schematic diagram showing the structure of the fastening device in Embodiment 1.

[0029] Figure 2 is Figure 1 The enlarged view of part A in

[0030] Figure 3 is Figure 2 The enlarged view of part B in

[0031] Figure 4 It is a schematic diagram showing the structure of the fastening device in Embodiment 2.

[0032] Figure 5 is Figure 4 The enlarged view of part C in

[0033] Description of the reference numerals: 1, hydraulic system; 11, piston rod; 12, movable plate; 2, object of action; 3, electric push rod; 4, abutting assembly; 41, first steel plate; 42, second steel plate; 421, limiting hole; 43, guide rod; 431, smooth section; 432, threaded section; 44, limiting member; 441, first limiting nut; 442, second limiting nut; 45, limiting column; 46, spring; 47, anti-slip rubber pad; 5, mounting bracket; 6, third steel plate; 7, abutting rubber pad. Detailed Description of the Embodiment

[0034] The following will further elaborate on the present application in conjunction with the attached Figures 1-5 drawings.

[0035] An embodiment of the present application discloses a fastening device for a hydraulic system. Referring to Figure 1 , the hydraulic system 1 includes a piston rod 11 and a movable plate 12. The movable plate 12 is fixedly arranged on the driving end of the piston rod 11. The piston rod 11 drives the movable plate 12 to perform linear reciprocating motion, and the movable plate 12 is used to apply pressure to the object of action 2. The hydraulic system 1 can be used in equipment such as a filter press.

[0036] Referring to Figure 1 and Figure 2, the fastening device of the hydraulic system includes an electric push rod 3 and an abutting component 4; the electric push rod 3 is fixedly arranged on the mounting frame 5 by bolts, and the driving direction of the electric push rod 3 is consistent with the driving direction of the piston rod 11. In this embodiment, the driving directions of both the electric push rod 3 and the piston rod 11 are vertically upward, and the movable plate 12 is horizontally arranged. The abutting component 4 is fixedly arranged at the driving end of the electric push rod 3, and the abutting component 4 elastically abuts against the movable plate 12.

[0037] The implementation principle of the fastening device of a hydraulic system 1 in an embodiment of the present application is as follows: when the hydraulic system 1 drives the movable rod to move towards the acting object 2, so that after the movable plate 12 applies a designed pressure to the acting object 2; the electric push rod 3 drives the abutting component 4 to follow synchronously, so that the abutting component 4 closely abuts against the movable plate 12. The fastening device has a pressure maintaining effect on the movable plate 12, and the fastening device can assist the movable plate 12 to apply pressure to the acting object 2, thereby reducing the hydraulic oil volume and pressure input by the hydraulic system 1 into the hydraulic cylinder, reducing the working load of the hydraulic system 1, reducing the probability of damage to heavy parts of the hydraulic system 1, and reducing the failure rate of the hydraulic system 1.

[0038] Refer to Figure 1 and Figure 2 , the abutting component 4 includes a first steel plate 41, a second steel plate 42, a guide rod 43, a limiting member 44, a limiting column 45, a spring 46 and an anti-slip rubber pad 47.

[0039] Refer to Figure 2 , in this embodiment, both the first steel plate 41 and the second steel plate 42 are rectangular steel plates, and both the first steel plate 41 and the second steel plate 42 are horizontally arranged. The second steel plate 42 is fixedly connected to the driving end of the electric push rod 3. The first steel plate 41 is arranged on the side of the second steel plate 42 away from the electric push rod 3, and the first steel plate 41 is connected to the second steel plate 42 through the guide rod 43.

[0040] A plurality of guide rods 43 are provided. The plurality of guide rods 43 are arranged at intervals between the first steel plate 41 and the second steel plate 42. In this embodiment, four guide rods 43 are provided. The four guide rods 43 are arranged in the four corner areas of the first steel plate 41 and the second steel plate 42, and the guide rods 43 are vertically arranged. One end of the guide rod 43 is welded to the first steel plate 41, and the second steel plate 42 is provided with a limiting hole 421 for the guide rod 43 to pass through, so that the guide rod 43 is slidably connected to the second steel plate 42; thereby realizing the mutual approach or mutual separation of the first steel plate 41 and the second steel plate 42.

[0041] Refer to Figure 2 and Figure 3, the limiting member 44 is arranged on the guide rod 43, and the limiting member 44 is arranged on the side of the second steel plate 42 away from the first steel plate 41; the limiting member 44 is used to limit the positions of the first steel plate 41 and the second steel plate 42, preventing the situation that the guide rod 43 slips off the second steel plate 42, thereby improving the operating stability of the fastening device.

[0042] Refer to Figure 2 and Figure 3 , in this embodiment, the limiting member 44 is a limiting nut, and the limiting nut includes a first limiting nut 441 and a second limiting nut 442, and the first limiting nut 441 is fixedly connected in contact with the second limiting nut 442. Correspondingly, the guide rod 43 is provided with a smooth section 431 and a threaded section 432. The smooth section 431 of the guide rod 43 passes through the limiting hole 421 of the second steel plate 42, and the threaded section 432 of the guide rod 43 is arranged on the side of the second steel plate 42 away from the first steel plate 41, and there is a clearance between the threaded section 432 and the second steel plate 42. Thus, the first limiting nut 441, the second limiting nut 442 are threadedly connected with the guide rod 43, which is convenient for the staff to install the abutting component 4. By setting the first limiting nut 441 and the second limiting nut 442, the loosening of the first limiting nut 441 and the second limiting nut 442 can be reduced, and the operating stability of the fastening device can be improved. It should be noted that, in this embodiment, the driving direction of the electric push rod 3 is vertically upward; therefore, there is a clearance between the fastening nut and the second steel plate 42. In other embodiments, the driving direction of the electric push rod 3 can also be horizontal; at this time, the fastening nut abuts against the second steel plate 42 to improve the operating stability of the fastening device.

[0043] Refer to Figure 2 , the limiting column 45 is arranged between the first steel plate 41 and the second steel plate 42, and one end of the limiting column 45 is fixedly connected to the second steel plate 42 by welding, and there is a clearance between the other end of the limiting column 45 and the first steel plate 41. The spring 46 is sleeved on the outer periphery of the limiting column 45, and the spring 46 abuts against the first steel plate 41 and the second steel plate 42; thus, when the first steel plate 41 and the second steel plate 42 approach each other, the first steel plate 41 and the second steel plate 42 will compress the spring 46.

[0044] Refer to Figure 1 and Figure 2 , after the electric push rod 3 drives the first steel plate 41 to abut against the movable plate 12, the driving end of the electric push rod 3 continues to move towards the object 2, so that the first steel plate 41 and the second steel plate 42 squeeze the spring 46, causing the spring 46 to be compressed and deformed, and applying a force to the movable plate 12; thus, the pressure-holding effect of the fastening device on the object 2 is realized, so as to reduce the working load of the hydraulic system 1 and reduce the failure rate of the hydraulic system 1.

[0045] Refer to Figure 1 andFigure 2 The anti-slip rubber pad 47 is fixedly arranged on the side of the first steel plate 41 away from the second steel plate 42, and the anti-slip rubber pad 47 is used to abut against the movable plate 12. Thus, when the first steel plate 41 applies pressure to the movable plate 12, the slip between the first steel plate 41 and the movable plate 12 can be reduced to reduce the damage of the guide rod 43; at the same time, the anti-slip rubber pad 47 also has a buffering effect to reduce the impact strength between the first steel plate 41 and the movable plate 12.

[0046] Embodiment 2

[0047] The difference between this Embodiment 2 and Embodiment 1 is that:

[0048] Referring to Figure 4 and Figure 5 the abutting assembly 4 includes a third steel plate 6 and an abutting rubber pad 7. The third steel plate 6 is fixedly connected to the driving end of the electric push rod 3, and the abutting rubber pad 7 is adhesively fixed on the side of the third steel plate 6 away from the electric push rod 3. The abutting rubber pad 7 is used to abut against the movable plate 12. Thus, the electric push rod 3 drives the third steel plate 6 and the abutting rubber pad 7 to move towards the object 2 to be acted on, so that the abutting rubber pad 7 abuts against the movable plate 12, that is, while using the acting force of the fastening device on the movable plate 12 to maintain the pressure holding effect of the hydraulic system 1 on the object 2 to be acted on, the working load of the hydraulic system 1 is reduced, and the failure rate of the hydraulic system 1 is reduced.

[0049] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A fastening device for a hydraulic system, the hydraulic system (1) comprising a piston rod (11) and a movable plate (12), the movable plate (12) being fixedly mounted on a driving end of the piston rod (11), the piston rod (11) driving the movable plate (12) to perform linear reciprocating motion, the movable plate (12) being used to apply pressure to an object (2); characterized in that: The fastening device comprises an electric push rod (3) and an abutment assembly (4); the electric push rod (3) is fixed on a mounting frame (5), and a driving direction of the electric push rod (3) is consistent with a driving direction of a piston rod (11); the abutment assembly (4) is fixed on a driving end of the electric push rod (3), and the abutment assembly (4) elastically abuts against a movable plate (12).

2. The fastening device for a hydraulic system according to claim 1, characterized in that: The abutment assembly (4) comprises a first steel plate (41), a second steel plate (42), a guide rod (43), a limiting column (45) and a spring (46); a plurality of guide rods (43) are provided, and the plurality of guide rods (43) are arranged at intervals between the first steel plate (41) and the second steel plate (42); one end of the guide rod (43) is fixedly connected to the first steel plate (41); the second steel plate (42) is provided with a limiting hole (421) for the guide rod (43) to pass through; the second steel plate (42) is fixedly connected to the driving end of the electric push rod (3); The first steel plate (41) is arranged on a side of the second steel plate (42) away from the electric push rod (3); the limiting column (45) is arranged between the first steel plate (41) and the second steel plate (42), and one end of the limiting column (45) is fixedly connected to the second steel plate (42), and an avoidance distance is provided between the other end of the limiting column (45) and the first steel plate (41); the spring (46) is sleeved on the outer periphery of the limiting column (45), and the spring (46) is in contact with the first steel plate (41) and the second steel plate (42).

3. The fastening device for a hydraulic system according to claim 2, characterized in that: It also includes a limiting member (44), wherein the limiting member (44) is arranged on the guide rod (43), and the limiting member (44) is arranged on a side of the second steel plate (42) away from the first steel plate (41).

4. The fastening device for a hydraulic system according to claim 3, characterized in that: The limiting member (44) is a limiting nut, the guide rod (43) is provided with a threaded section (432) that matches the limiting nut, and the limiting nut is threadedly connected to the guide rod (43).

5. The fastening device for a hydraulic system according to claim 4, characterized in that: An escape gap is provided between the threaded section (432) and the second steel plate (42).

6. The fastening device for a hydraulic system according to claim 4, characterized in that: The limiting nut comprises a first limiting nut (441) and a second limiting nut (442), and the first limiting nut (441) and the second limiting nut (442) are abutted and fixed.

7. The fastening device for a hydraulic system according to claim 2, characterized in that: It also includes an anti-skid rubber pad (47), which is fixed to a side of the first steel plate (41) away from the second steel plate (42), and is used to abut against the movable plate (12).

8. The fastening device for a hydraulic system according to claim 1, characterized in that: The abutment assembly (4) comprises a third steel plate (6) and an abutment rubber pad (7); the third steel plate (6) is fixedly connected to the driving end of the electric push rod (3); the abutment rubber pad (7) is adhesively fixed to a side of the third steel plate (6) away from the electric push rod (3); and the abutment rubber pad (7) is used to abut against the movable plate (12).

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