High-precision displacement control hydraulic system

Abstract

The utility model discloses a high-precision displacement control hydraulic system, and particularly relates to the technical field of hydraulic systems, the high-precision displacement control hydraulic system comprises a hydraulic cylinder and a hydraulic rod mounted in the hydraulic cylinder, and a control assembly used for performing high-precision displacement adjustment on the hydraulic cylinder is arranged outside the hydraulic cylinder; the control assembly comprises a flow meter, and the flow meter is arranged on one side of the hydraulic cylinder. The flow meter is used for monitoring the flow of hydraulic oil transmitted into the hydraulic cylinder and used for adjusting the corresponding height of the hydraulic rod, so that whether the flow of the hydraulic oil reaches the displacement distance of the hydraulic rod or not can be detected, and meanwhile, the connecting ring and the connecting support are connected with the hydraulic rod, so that the reflecting piece can move upwards by the same distance along with the hydraulic rod; the distance measuring sensor is used for detecting whether the upward moving distance of the reflecting part is equal to the set value, double detection is achieved, the structure is simple, the accuracy of the hydraulic rod during displacement can be guaranteed, and due to the fact that the whole device is installed outside the hydraulic cylinder, workers can conveniently conduct overhaul and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, in particular to a high-precision displacement control hydraulic system. Background Art

[0002] The function of the hydraulic system is to increase the force by changing the pressure. Generally, a complete hydraulic system is composed of five parts, namely, a power element, an actuator, a control element, an auxiliary element and hydraulic oil. As shown in the application document of the prior art publication number CN215566971U, it includes a hydraulic cylinder and a control mechanism for accurately controlling the displacement. A piston with a magnetic element is provided in the hydraulic cylinder; the control mechanism includes a control component and a sensor for detecting the displacement of the piston in the hydraulic cylinder, and the sensor is electrically connected to the control component; the control component includes a first solenoid valve and an electric cylinder, and the electric cylinder is connected to the piston cylinder by transmission. A one-way output pipeline for inputting hydraulic oil to the hydraulic cylinder is provided between the piston cylinder and the first solenoid valve. This technical solution detects the displacement position of the piston on the hydraulic cylinder under the action of the sensor. When the adjustment of the oil pump reaches a certain level, the electric cylinder is started to transport the hydraulic oil in the piston cylinder to the hydraulic cylinder for replenishment adjustment. The purpose of precise control is achieved through the coordinated operation of precise detection and precise delivery of hydraulic oil.

[0003] However, the above technical solution has a complex structure and requires the use of a variety of solenoid valves and sensors for coordinated control, which results in high cost. In addition, part of the structure of this technical solution is installed inside the hydraulic cylinder, which makes it inconvenient for staff to perform inspection and maintenance, affecting the convenience of subsequent inspection and maintenance. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a high-precision displacement control hydraulic system, which monitors the hydraulic oil flow transmitted to the hydraulic cylinder for adjusting the corresponding height of the hydraulic rod through a flow meter, so as to detect whether the hydraulic oil flow reaches the displacement distance of the hydraulic rod. At the same time, through the connection between the connecting ring and the connecting bracket and the hydraulic rod, the reflector can move up the same distance with the hydraulic rod, and the distance measuring sensor can be used to detect whether the upward movement distance of the reflector is equal to the set value. The double detection and simple structure can ensure the accuracy of the hydraulic rod displacement. Because the overall equipment is installed outside the hydraulic cylinder, it is convenient for the staff to carry out inspection and maintenance, so as to solve the problems arising from the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision displacement control hydraulic system, comprising a hydraulic cylinder and a hydraulic rod installed inside the hydraulic cylinder, wherein a control component for high-precision displacement adjustment of the hydraulic cylinder is provided outside the hydraulic cylinder;

[0006] The control assembly includes a flow meter, which is arranged on one side of the hydraulic cylinder, a side of the flow meter away from the hydraulic cylinder is connected to an oil supply pipe, and a side of the flow meter close to the hydraulic cylinder is connected to a connecting pipe, and the connecting pipe is connected to the hydraulic cylinder;

[0007] A distance measuring sensor is provided on the front side of the bottom end of the hydraulic cylinder, a reflector is provided on the top of the distance measuring sensor, a connecting bracket is installed on the top of the reflector, the top of the connecting bracket extends to the hydraulic rod, a connecting ring is installed on the rear side of the top of the connecting bracket, and the connecting ring is sleeved on the outside of the hydraulic rod.

[0008] In a preferred embodiment, a mounting plate is provided at the bottom of the ranging sensor, the mounting plate is installed on the front side of the hydraulic cylinder, a mounting groove is provided at the top of the mounting plate, the ranging sensor is arranged inside the mounting groove, the bottom of the reflecting member is in contact with the top of the mounting plate, the ranging sensor can be stored and protected by the mounting groove on the mounting plate, and with the help of the shielding of the reflecting member, dust and other impurities can be prevented from falling into the mounting groove when the ranging sensor is not in use, thereby affecting the stability of the ranging sensor.

[0009] In a preferred embodiment, a positioning bracket is provided on the front side of the top end of the hydraulic cylinder, and the positioning bracket is sleeved on the outside of the connecting bracket. Through the setting of the positioning bracket, the movement of the connecting bracket can be limited to ensure the stability of the connecting bracket during movement and avoid the displacement of the connecting bracket during movement.

[0010] In a preferred embodiment, fixing plates are installed on both sides of the positioning bracket, and the fixing plates are arranged on the front side of the hydraulic cylinder. Two fixing bolts distributed at intervals are arranged on the front side of the fixing plate. The rear end of the fixing bolts passes through the fixing plates and extends into the interior of the hydraulic cylinder. The fixing bolts are threadedly connected to the hydraulic cylinder. Through the connection between the fixing bolts and the hydraulic cylinder, the limiting effect of the positioning bracket on the connecting bracket can be enhanced, and it is also convenient for the staff to disassemble the fixing bolts and remove the positioning bracket.

[0011] In a preferred embodiment, fastening bolts are provided on both sides of the connecting ring, and the fastening bolts penetrate the connecting ring and extend into the interior of the hydraulic rod. The fastening bolts are threadedly connected to the hydraulic rod. Through the connection between the fastening bolts and the hydraulic rod, the connection stability between the connecting ring and the hydraulic rod can be guaranteed, and it is also convenient for the staff to disassemble the fastening bolts and remove the connecting ring.

[0012] In a preferred embodiment, the cross-section of the positioning bracket is set to be U-shaped. By setting the positioning bracket to be U-shaped, the positioning bracket can limit the connection bracket to ensure the stability of the connection bracket when it moves up and down.

[0013] Technical effects and advantages of the utility model:

[0014] The flow meter monitors the flow of hydraulic oil transmitted to the hydraulic cylinder for adjusting the corresponding height of the hydraulic rod, so as to detect whether the hydraulic oil flow reaches the displacement distance of the hydraulic rod. At the same time, through the connection between the connecting ring and the connecting bracket and the hydraulic rod, the reflector can move up the same distance with the hydraulic rod, and the distance measuring sensor can be used to detect whether the upward movement distance of the reflector is equal to the set value. The double detection and simple structure can ensure the accuracy of the hydraulic rod displacement. Because the overall equipment is installed outside the hydraulic cylinder, it is convenient for the staff to carry out inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a front view of the connecting bracket of the utility model;

[0017] Figure 3 This is an exploded view of the connecting ring of the utility model;

[0018] Figure 4 This is the front view of the mounting plate of the utility model;

[0019] Figure 5 It is a side sectional view of the mounting plate of the utility model.

[0020] The accompanying drawings are marked as follows: 1. hydraulic cylinder; 2. flow meter; 3. oil supply pipe; 4. connecting pipe; 5. distance measuring sensor; 6. reflector; 7. connecting bracket; 8. hydraulic rod; 9. mounting plate; 10. mounting groove; 11. positioning bracket; 12. fixing plate; 13. fixing bolt; 14. connecting ring; 15. fastening bolt. DETAILED DESCRIPTION

[0021] 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.

[0022] Refer to the instruction manual Figure 1-5 The utility model provides a high-precision displacement control hydraulic system, comprising a hydraulic cylinder 1 and a hydraulic rod 8 installed inside the hydraulic cylinder 1, wherein the outside of the hydraulic cylinder 1 is provided with a control component for high-precision displacement adjustment of the hydraulic cylinder 1;

[0023] like Figure 1 , 2As shown in , 3 and 5, the control component includes a flow meter 2, the flow meter 2 is arranged on one side of the hydraulic cylinder 1, the side of the flow meter 2 away from the hydraulic cylinder 1 is connected to the oil supply pipe 3, the side of the flow meter 2 close to the hydraulic cylinder 1 is connected to the connecting pipe 4, and the connecting pipe 4 is connected to the hydraulic cylinder 1; a distance sensor 5 is provided on the front side of the bottom end of the hydraulic cylinder 1, a reflector 6 is provided on the top of the distance sensor 5, a connecting bracket 7 is installed on the top of the reflector 6, the top of the connecting bracket 7 extends to the hydraulic rod 8, and a connecting ring 14 is installed on the rear side of the top of the connecting bracket 7, and the connecting ring 14 is sleeved on the outside of the hydraulic rod 8.

[0024] like Figure 1 , 2 As shown in Figures 4 and 5, a mounting plate 9 is provided at the bottom of the distance sensor 5, and the mounting plate 9 is installed at the front side of the hydraulic cylinder 1. A mounting groove 10 is provided at the top of the mounting plate 9, and the distance sensor 5 is arranged inside the mounting groove 10. The bottom of the reflector 6 is in contact with the top of the mounting plate 9. The distance sensor 5 can be stored and protected by the mounting groove 10 on the mounting plate 9, and with the help of the shielding of the reflector 6, dust and other impurities can be prevented from falling into the mounting groove 10 when the distance sensor 5 is not in use, thereby affecting the stability of the use of the distance sensor 5.

[0025] like Figure 1-3 As shown, a positioning bracket 11 is provided on the front side of the top end of the hydraulic cylinder 1, and the positioning bracket 11 is sleeved on the outside of the connecting bracket 7. Through the setting of the positioning bracket 11, the movement of the connecting bracket 7 can be limited to ensure the stability of the connecting bracket 7 during movement and avoid the connection bracket 7 from being offset during movement. Fixed plates 12 are installed on both sides of the positioning bracket 11, and the fixed plate 12 is provided on the front side of the hydraulic cylinder 1. Two fixed bolts 13 distributed at intervals are provided on the front side of the fixed plate 12. The rear end of the fixed bolt 13 passes through the fixed plate 12 and extends into the inside of the hydraulic cylinder 1. The fixed bolt 13 is threadedly connected to the hydraulic cylinder 1. Through the connection between the fixed bolt 13 and the hydraulic cylinder 1, the limiting effect of the positioning bracket 11 on the connecting bracket 7 can be enhanced, and it is also convenient for the staff to disassemble the fixed bolt 13 and remove the positioning bracket 11.

[0026] like Figure 3 As shown, fastening bolts 15 are provided on both sides of the connecting ring 14. The fastening bolts 15 penetrate the connecting ring 14 and extend into the interior of the hydraulic rod 8. The fastening bolts 15 are threadedly connected to the hydraulic rod 8. The connection between the fastening bolts 15 and the hydraulic rod 8 ensures the connection stability between the connecting ring 14 and the hydraulic rod 8. At the same time, it is also convenient for the staff to disassemble the fastening bolts 15 and remove the connecting ring 14.

[0027] like Figure 3As shown, the cross section of the positioning bracket 11 is set to be U-shaped. By setting the positioning bracket 11 to be U-shaped, the positioning bracket 11 can limit the connection bracket 7 to ensure the stability of the connection bracket 7 when it moves up and down.

[0028] The flow rate of hydraulic oil transmitted to the hydraulic cylinder 1 for adjusting the corresponding height of the hydraulic rod 8 is monitored by the flow meter 2, so as to detect whether the hydraulic oil flow rate reaches the displacement distance of the hydraulic rod 8. When the hydraulic oil is transmitted to the hydraulic cylinder 1, the hydraulic rod 8 drives the reflector 6 connected to the connecting bracket 7 to move up through the connecting ring 14, so that the reflector 6 can move up the same distance as the hydraulic rod 8, and the distance measuring sensor 5 is used to detect whether the upward movement distance of the reflector 6 is equal to the set value. If it does not reach the set value, the equipment continues to supply hydraulic oil to the inside of the hydraulic cylinder 1 to raise the hydraulic rod 8. The dual detection of the flow meter 2 and the distance measuring sensor 5 can ensure the accuracy of the displacement of the hydraulic rod 8, and the overall equipment is installed outside the hydraulic cylinder 1, which can be convenient for the staff to carry out inspection and maintenance.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A high-precision displacement control hydraulic system, comprising a hydraulic cylinder (1) and a hydraulic rod (8) installed inside the hydraulic cylinder (1), characterized in that: The hydraulic cylinder (1) is provided with a control component outside thereof for performing high-precision displacement adjustment on the hydraulic cylinder (1); The control component comprises a flow meter (2), the flow meter (2) being arranged on one side of the hydraulic cylinder (1), the side of the flow meter (2) away from the hydraulic cylinder (1) being connected to an oil supply pipe (3), the side of the flow meter (2) close to the hydraulic cylinder (1) being connected to a connecting pipe (4), the connecting pipe (4) being connected to the hydraulic cylinder (1); A distance measuring sensor (5) is provided at the front side of the bottom end of the hydraulic cylinder (1), a reflector (6) is provided at the top of the distance measuring sensor (5), a connecting bracket (7) is installed at the top of the reflector (6), the top end of the connecting bracket (7) extends to the hydraulic rod (8), a connecting ring (14) is installed at the rear side of the top end of the connecting bracket (7), and the connecting ring (14) is sleeved on the outside of the hydraulic rod (8).

2. A high-precision displacement control hydraulic system according to claim 1, characterized in that: A mounting plate (9) is provided at the bottom of the distance measuring sensor (5), the mounting plate (9) is mounted on the front side of the hydraulic cylinder (1), a mounting groove (10) is provided at the top of the mounting plate (9), the distance measuring sensor (5) is arranged inside the mounting groove (10), and the bottom of the reflector (6) is in contact with the top of the mounting plate (9).

3. A high-precision displacement control hydraulic system according to claim 1, characterized in that: A positioning bracket (11) is provided on the front side of the top end of the hydraulic cylinder (1), and the positioning bracket (11) is sleeved on the outside of the connecting bracket (7).

4. A high-precision displacement control hydraulic system according to claim 3, characterized in that: A fixing plate (12) is installed on both sides of the positioning bracket (11), and the fixing plate (12) is arranged on the front side of the hydraulic cylinder (1). Two fixing bolts (13) are arranged on the front side of the fixing plate (12) and are spaced apart. The rear end of the fixing bolt (13) passes through the fixing plate (12) and extends into the interior of the hydraulic cylinder (1), and the fixing bolt (13) is threadedly connected to the hydraulic cylinder (1).

5. A high-precision displacement control hydraulic system according to claim 1, characterized in that: Both sides of the connecting ring (14) are provided with fastening bolts (15), the fastening bolts (15) penetrate the connecting ring (14) and extend into the interior of the hydraulic rod (8), and the fastening bolts (15) are threadedly connected to the hydraulic rod (8).

6. A high-precision displacement control hydraulic system according to claim 3, characterized in that: The cross section of the positioning bracket (11) is set to be U-shaped.

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