Mechanism related to speed control loop of hydraulic system

Abstract

The utility model discloses a mechanism related to a hydraulic system speed control loop, which comprises a support frame, a circuit board is fixedly mounted on the inner side of the support frame, a notch for an energy line of the circuit board to be inserted is formed in one side of the support frame, and a rotating motor is electrically connected above the middle of the circuit board; a mounting plate is fixedly mounted at the end of an output shaft of the rotating motor, the output shaft of the rotating motor penetrates through the supporting frame, and an oil cylinder is fixedly mounted above the mounting plate through bolts. An electric control hydraulic lock and a mechanical hydraulic travel switch are arranged above the circuit board, and both the electric control hydraulic lock and the mechanical hydraulic travel switch are located on the inner side of the supporting frame; an electromagnetic reversing valve is installed on the front side of the upper portion of the oil cylinder, and a two-way throttling valve is installed on the right side of the upper portion of the oil cylinder. According to the mechanism related to the speed control loop of the hydraulic system, the mechanical hydraulic travel switch and the electric control hydraulic lock are matched for use, so that the oil cylinder is safely and reliably overturned.

Description

Technical Field

[0001] The utility model relates to a hydraulic cylinder control and relates to the technical field, in particular to a mechanism for a hydraulic system speed control loop. Background Art

[0002] The rotation speed is an important indicator of the hydraulic system. Within a certain range, the faster the rotation speed, the higher the working efficiency. However, beyond a certain range, the faster the rotation speed, the lower the working stability and safety.

[0003] Publication No. "CN114955904A" is a hydraulic speed control circuit and control method for a slewing system of a truck crane, comprising: a proportional control hydraulic valve, a slewing hydraulic motor, a pilot control hydraulic valve and a handle. The proportional control hydraulic valve is used to switch different working positions and provide hydraulic oil of different directions and flows to the slewing hydraulic motor; the pilot control hydraulic valve receives a current signal, opens the pilot valve, and the oil pushes the main valve spool to move, and the oil drives the slewing hydraulic motor to move on the vehicle; the handle is an operating end device for slewing operations, and the controller controls the high-speed switch hydraulic valve through PWM. When the crane is in a low-speed slewing state, the flow of hydraulic oil flowing into the slewing hydraulic motor is changed to stabilize the slewing speed; the control circuit creates conditions for the response speed, which is conducive to improving the stability and accuracy of the entire hydraulic system, is easy to modify, has low cost, and has a relatively simple control process;

[0004] The control circuit controls the rotating cylinder through the photoelectric switch on the handle. Damage to the photoelectric switch itself and other reasons will make the rotating mechanism unsafe, and the safety performance is much worse. The requirements for mechanical execution actions in existing processes are getting higher and higher, which is not conducive to improving the safety, reliability and high precision of the equipment. Therefore, we proposed a mechanism for the hydraulic system speed control circuit that can solve the above problems well. Utility Model Content

[0005] The purpose of the utility model is to provide a mechanism for a speed control circuit of a hydraulic system to solve the problem raised in the above-mentioned background technology that the control circuit on the current market controls the rotating cylinder through a photoelectric switch on a handle, and damage to the photoelectric itself and other reasons will make the rotating mechanism unsafe, and the safety performance is much worse. The requirements for mechanical execution actions of existing processes are getting higher and higher, which is not conducive to improving the safety, reliability and high precision of the equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanism for a speed control circuit of a hydraulic system, comprising a support frame, a circuit board is fixedly mounted inside the support frame, a slot for inserting a circuit board energy line is provided on one side of the support frame, and a rotating motor is electrically connected to the upper middle of the circuit board;

[0007] It also includes: a mounting plate is fixedly installed on the end of the output shaft of the rotating motor, and the output shaft of the rotating motor is arranged to penetrate the support frame, and an oil cylinder is fixedly installed above the mounting plate by bolts; an electric-controlled hydraulic lock and a mechanical hydraulic travel switch are arranged above the circuit board, and the electric-controlled hydraulic lock and the mechanical hydraulic travel switch are both located on the inner side of the support frame.

[0008] Preferably, an electromagnetic reversing valve is installed on the front side above the oil cylinder, and a two-way throttle valve is installed on the right side above the oil cylinder.

[0009] Preferably, a protective plate is provided on the outer side of the mounting plate and the lower side of the oil cylinder, and the protective plate is fixedly installed above the supporting frame.

[0010] Preferably, the electrically controlled hydraulic lock and the mechanical hydraulic travel switch are both electrically connected with a signal board, and the signal board is fixedly installed in the support frame.

[0011] Preferably, a spring is arranged above the signal plate, and a mechanical collision block is fixedly connected to the upper end of the spring, and the mechanical collision block is slidably arranged in the support frame.

[0012] Preferably, the mounting plate is arranged as a circular structure when viewed in plan view, and the mounting plate is equal in size to the lower end portion of the oil cylinder.

[0013] Preferably, the oil cylinder is connected to a mechanical hydraulic stroke switch via an electrical signal, and the oil circuit of the oil cylinder can be controlled via the mechanical hydraulic stroke switch.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the mechanism of the hydraulic system speed control circuit achieves safe and reliable cylinder flipping through the cooperation of the mechanical hydraulic travel switch and the electronically controlled hydraulic lock, and its specific contents are as follows:

[0015] (1) A mechanical hydraulic stroke switch is provided. When the oil cylinder is turned over to the specified position, the mechanical hydraulic stroke switch can be pressed manually, so that the mechanical hydraulic stroke switch compresses the spring. At the same time, the mechanical hydraulic stroke switch presses the signal plate, so that the mechanical hydraulic stroke switch is switched, and then the oil cylinder is disconnected or circulated. At this time, the equipment will rotate and stop accordingly, so as to play a safety protection role when the oil cylinder is turned over;

[0016] (2) An electric-controlled hydraulic lock is provided. When the oil cylinder is turned over, the energy line of the electromagnetic reversing valve is connected, so that the electromagnetic reversing valve is energized. The current will pass through the electromagnetic reversing valve through the electric-controlled hydraulic lock, so that the electric-controlled hydraulic lock is energized. At this time, oil will enter the rodless cavity of the oil cylinder, so that the oil cylinder moves forward. The oil circuit can be controlled by the mechanical hydraulic stroke switch 10. The mechanical hydraulic stroke switch and the electric-controlled hydraulic lock are used in combination to achieve safe and reliable turning of the oil cylinder;

[0017] (3) A mounting plate is provided, which makes the installation of the oil cylinder more convenient and helps to improve the stability of the oil cylinder when in use;

[0018] (4) A rotating motor and a protective plate are provided. The rotating motor can be controlled by the circuit board, so that the rotating motor drives the oil cylinder to rotate, which improves the convenience of using the oil cylinder. The protective plate can protect the mounting plate and the lower end of the oil cylinder, so that the installation of the oil cylinder is more stable.

[0019] (5) A two-way throttle valve and an electromagnetic reversing valve are provided. The two-way throttle valve can be used to control the cylinder running speed of the cylinder, which is beneficial to improving the applicability of the cylinder when used. The electromagnetic reversing valve can be used to control the running direction of the cylinder, which is beneficial to the reuse of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the circuit of the mechanical hydraulic travel switch of the utility model;

[0022] Figure 3 This is a schematic diagram of the circuit structure of the electromagnetic reversing valve of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the mounting plate of the utility model;

[0024] Figure 5 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0025] Figure 6 It is a front view structural schematic diagram of the utility model.

[0026] In the figure: 1. support frame; 2. circuit board; 3. rotating motor; 4. mounting plate; 5. protective plate; 6. oil cylinder; 7. two-way throttle valve; 8. solenoid reversing valve; 9. electronically controlled hydraulic lock; 10. mechanical hydraulic travel switch; 11. signal board; 12. spring; 13. mechanical collision block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1: Solve the problem of low safety of the rotating mechanism, please refer to Figure 1-Figure 6 The utility model provides a technical solution: a mechanism for a hydraulic system speed control circuit, comprising a support frame 1, a circuit board 2 is fixedly mounted inside the support frame 1, and a slot for inserting a power line of the circuit board 2 is opened on one side of the support frame 1, and a rotating motor 3 is electrically connected to the upper middle of the circuit board 2;

[0029] It also includes: a mounting plate 4 is fixedly mounted on the end of the output shaft of the rotating motor 3, and the output shaft of the rotating motor 3 is arranged to penetrate the support frame 1, and an oil cylinder 6 is fixedly mounted on the mounting plate 4 by bolts; an electric-controlled hydraulic lock 9 and a mechanical hydraulic travel switch 10 are arranged on the circuit board 2, and the electric-controlled hydraulic lock 9 and the mechanical hydraulic travel switch 10 are both located on the inner side of the support frame 1;

[0030] A spring 12 is arranged above the signal plate 11, and a mechanical collision block 13 is fixedly connected to the upper end of the spring 12, and the mechanical collision block 13 is slidably arranged in the support frame 1;

[0031] First, when the oil cylinder 6 is turned over, the energy line of the electromagnetic reversing valve 8 is connected, so that the electromagnetic reversing valve 8 is energized, and the current will pass through the electromagnetic reversing valve 8 through the electric control hydraulic lock 9, so that the electric control hydraulic lock 9 is energized, and the oil will enter the rodless cavity of the oil cylinder 6, so that the oil cylinder 6 moves forward;

[0032] When the oil in the rod chamber passes through the oil return tank, the oil cylinder 6 is controlled to flip. When it flips to the specified position, the mechanical hydraulic stroke switch 10 can be manually pressed to compress the spring 12. At the same time, the mechanical hydraulic stroke switch 10 will press the signal plate 11, so that the mechanical hydraulic stroke switch 10 is switched, and then the oil cylinder 6 is disconnected or circulated. At this time, the equipment will rotate and stop accordingly, so as to play a safety protection role when the oil cylinder 6 is flipped.

[0033] When the oil cylinder returns, the electromagnetic reversing valve 8 is energized, oil enters the rod chamber of the oil cylinder 6, and oil returns to the rodless chamber, and the oil cylinder 6 returns to its position, completing a set of actions;

[0034] Embodiment 2: In this embodiment, if Figure 1-Figure 4 As shown, based on the first embodiment, a structure for installing the oil cylinder 6 through the mounting plate 4 is also disclosed, and its specific contents are as follows;

[0035] An electromagnetic reversing valve 8 is installed on the front side above the oil cylinder 6, and a two-way throttle valve 7 is installed on the right side above the oil cylinder 6; a protective plate 5 is arranged on the outer side of the mounting plate 4 and below the oil cylinder 6, and the protective plate 5 is fixedly installed above the support frame 1; the mounting plate 4 is viewed as a circular structure in a top section, and the mounting plate 4 is equal in size to the lower end of the oil cylinder 6;

[0036] The rotating motor 3 can be controlled by the circuit board 2, so that the rotating motor 3 drives the oil cylinder 6 to rotate, which improves the convenience of using the oil cylinder 6. The installation plate 4 makes the installation of the oil cylinder 6 more convenient, which is conducive to improving the stability of the oil cylinder 6 when in use; the protective plate 5 can protect the installation plate 4 and the lower end of the oil cylinder 6, so that the installation of the oil cylinder 6 is more stable;

[0037] Embodiment 3: In this embodiment, if Figure 1-Figure 6 As shown, based on the second embodiment, a structure in which the two-way throttle valve 7 and the electromagnetic reversing valve 8 control the oil cylinder 6 is also disclosed, and the specific contents are as follows;

[0038] The electric control hydraulic lock 9 and the mechanical hydraulic stroke switch 10 are both electrically connected with a signal plate 11, and the signal plate 11 is fixedly installed in the support frame 1; the oil cylinder 6 is connected with the mechanical hydraulic stroke switch 10 by an electrical signal, and the oil circuit of the oil cylinder 6 can be controlled by the mechanical hydraulic stroke switch 10;

[0039] The two-way throttle valve 7 can be used to control the cylinder running speed of the cylinder 6, which is conducive to improving the applicability of the cylinder 6 when in use. The electromagnetic reversing valve 8 can be used to control the running direction of the cylinder, which is conducive to the reuse of the cylinder 6. The mechanical hydraulic stroke switch 10 can be used to control the oil circuit. The mechanical hydraulic stroke switch 10 and the electronically controlled hydraulic lock 9 are used in combination to achieve safe and reliable overturning of the cylinder 6.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mechanism for a hydraulic system speed control circuit, comprising a support frame (1), a circuit board (2) being fixedly mounted inside the support frame (1), a slot for inserting a power line of the circuit board (2) being provided on one side of the support frame (1), and a rotating motor (3) being electrically connected to the upper middle portion of the circuit board (2); It is characterized in that Also includes: A mounting plate (4) is fixedly mounted on the end of the output shaft of the rotating motor (3), the output shaft of the rotating motor (3) is arranged to penetrate the support frame (1), and an oil cylinder (6) is fixedly mounted above the mounting plate (4) by bolts; An electrically controlled hydraulic lock (9) and a mechanical hydraulic travel switch (10) are arranged above the circuit board (2), and the electrically controlled hydraulic lock (9) and the mechanical hydraulic travel switch (10) are both located on the inner side of the support frame (1).

2. A mechanism for a hydraulic system speed control circuit according to claim 1, characterized in that: An electromagnetic reversing valve (8) is installed on the front side above the oil cylinder (6), and a two-way throttle valve (7) is installed on the right side above the oil cylinder (6).

3. A mechanism for a hydraulic system speed control circuit according to claim 2, characterized in that: A protective plate (5) is provided on the outer side below the mounting plate (4) and the oil cylinder (6), and the protective plate (5) is fixedly mounted above the supporting frame (1).

4. A mechanism for a hydraulic system speed control circuit according to claim 3, characterized in that: The electric-controlled hydraulic lock (9) and the mechanical hydraulic travel switch (10) are both electrically connected to a signal plate (11), and the signal plate (11) is fixedly installed in the support frame (1).

5. A mechanism for a hydraulic system speed control circuit according to claim 4, characterized in that: A spring (12) is arranged above the signal plate (11), and a mechanical collision block (13) is fixedly connected to the upper end of the spring (12), and the mechanical collision block (13) is slidably arranged in the support frame (1).

6. A mechanism for a hydraulic system speed control circuit according to claim 5, characterized in that: The mounting plate (4) is arranged as a circular structure when viewed from above, and the mounting plate (4) is equal in size to the lower end portion of the oil cylinder (6).

7. A mechanism for a hydraulic system speed control circuit according to claim 6, characterized in that: The oil cylinder (6) is connected to the mechanical hydraulic stroke switch (10) via an electrical signal, and the oil circuit of the oil cylinder (6) can be controlled via the mechanical hydraulic stroke switch (10).

Images