Hydraulic control system of vegetable jar overturning clamp

Abstract

The utility model provides a hydraulic control system for a vegetable jar overturning clamp. A pump station, a clamping arm oil cylinder and an overturning oil cylinder; the pump station is provided with an oil supply end and an oil return end; a clamping arm electromagnetic directional valve for controlling the telescopic action of the clamping arm oil cylinder is connected between the pump station and the clamping arm oil cylinder, a rodless cavity of the clamping arm oil cylinder is connected with a first pressure limiting valve, and a rod cavity of the clamping arm oil cylinder is connected with a second pressure limiting valve; an overturning electromagnetic directional valve for controlling the overturning oil cylinder to stretch and retract is connected between the pump station and the overturning oil cylinder; according to the utility model, the maximum pressure value of the first pressure-limiting valve and the second pressure-limiting valve is set to limit the maximum oil pressure inside the clamping arm oil cylinder in the process of loosening or clamping the clamping arm, so that the maximum acting force output by the clamping arm oil cylinder can be limited, and a vegetable jar is prevented from being crushed due to excessive clamping force.

Description

Technical Field

[0001] The utility model belongs to the technical field of pickle jar turning equipment, and particularly relates to a hydraulic control system for a pickle jar turning fixture. Background Art

[0002] In the process of pickling pickled vegetables such as pickled mustard tubers, pickled vegetables, and pickled mustard, after pickling is completed inside the pickle jar, it is necessary to take out the pickled vegetables from inside the pickle jar for subsequent packaging and sales.

[0003] Originally, it was usually manual to take out the pickled vegetables from the pickle jar, which took a lot of time, was difficult to take out completely, and had low efficiency.

[0004] In the prior art, a Chinese utility model patent document with the authorization announcement number of CN220412788U discloses a ceramic jar positioning and turning discharging mechanism, which drives the clamping arm (clamping arm) to act through an electric telescopic rod to clamp the pickle jar and then turn it over, directly pouring out all the pickled vegetables inside the pickle jar, improving the efficiency of taking out pickled vegetables and reducing the labor intensity of workers. However, in the process of clamping the pickle jar by the electric telescopic rod, the clamping force is not easy to control. If the clamping force is too large, it is easy to crush the pickle jar and cause losses.

[0005] Therefore, it is necessary to design a hydraulic control system for a pickle jar turning fixture that can limit the maximum clamping force to avoid crushing the pickle jar due to excessive output clamping force to solve the current technical problems. Summary of the Utility Model

[0006] Aiming at the deficiencies in the prior art, the utility model provides a hydraulic control system for a pickle jar turning fixture that can limit the maximum clamping force to avoid crushing the pickle jar due to excessive output clamping force.

[0007] The technical solution of the utility model is: a hydraulic control system for a pickle jar turning fixture, including a pump station, a clamping arm oil cylinder, and a turning oil cylinder; the pump station has an oil supply end and an oil return end; a clamping arm electromagnetic reversing valve for controlling the telescopic action of the clamping arm oil cylinder is connected between the pump station and the clamping arm oil cylinder, a first pressure limiting valve is connected to the rodless cavity of the clamping arm oil cylinder, and a second pressure limiting valve is connected to the rod chamber of the clamping arm oil cylinder; a turning electromagnetic reversing valve for controlling the telescopic action of the turning oil cylinder is connected between the pump station and the turning oil cylinder.

[0008] A two-way hydraulic lock is connected between the rodless cavity of the clamping arm oil cylinder, the rod chamber of the clamping arm oil cylinder and the first pressure limiting valve and the second pressure limiting valve.

[0009] A standby reversing valve is arranged between the pump station and the clamping arm oil cylinder.

[0010] A pressure sensor is connected to the oil supply end of the pump station.

[0011] A balance valve is provided between the tilting oil cylinder and the tilting electromagnetic directional control valve.

[0012] Both the clamping arm electromagnetic directional control valve and the tilting electromagnetic directional control valve are three-position four-way electromagnetic directional control valves.

[0013] Advantages of the present utility model:

[0014] (1) In the present utility model, by setting the maximum pressure values of the first pressure limiting valve and the second pressure limiting valve to limit the maximum oil pressure inside the clamping arm oil cylinder during the loosening or clamping process of the clamping arm, the maximum acting force output by the clamping arm oil cylinder can be restricted, avoiding crushing the pickle jar due to excessive clamping force.

[0015] (2) By controlling the clamping arm electromagnetic directional control valve, the clamping or releasing of the pickle jar by the clamping arm can be controlled, and by controlling the tilting electromagnetic directional control valve, the clamping arm assembly can be tilted to pour out the pickles in the pickle jar held by the clamping arm, replacing manual operation to take out the pickles, improving the efficiency of taking out pickles and reducing the labor intensity of workers at the same time. Description of the drawings

[0016] Figure 1 It is a schematic diagram of the principle of the hydraulic control system of the pickle jar tilting fixture in the present utility model.

[0017] Figure 2 It is a schematic structural diagram of an embodiment of the tilting oil cylinder in the present utility model. Detailed implementation manners

[0018] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the drawings. The description of the exemplary embodiments is merely illustrative and does not constitute any limitation to the present utility model and its application or use. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present utility model thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary and not as limitations.

[0019] The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different parts. Terms such as "comprising" or "including" mean that the elements before this term cover the elements listed after this term, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0020] AsFigure 2 As shown, the clamping arm, the clamping arm oil cylinder 1 and the related support mechanism constitute the clamping arm assembly 12. The two ends of the clamping arm assembly 12 are respectively connected to two support frames 13, and a tilting oil cylinder 14 for driving the tilting of the clamping arm assembly 12 is arranged on the support frame 13. After the clamping arm assembly 12 clamps and fixes the pickle jar, the tilting oil cylinder 14 drives the clamping arm assembly 12 to tilt, and pour out the pickles inside the pickle jar.

[0021] As Figure 1 Shown, the hydraulic control system of the pickle jar tilting fixture includes: a pump station 2, a clamping arm oil cylinder 1 and a tilting oil cylinder 6; the pump station 2 has an oil supply end and an oil return end; a clamping arm electromagnetic directional control valve 10 for controlling the telescopic action of the clamping arm oil cylinder 1 is connected between the pump station 2 and the clamping arm oil cylinder 1. A first pressure limiting valve 4 is connected to the rodless cavity of the clamping arm oil cylinder 1, and a second pressure limiting valve 3 is connected to the rod chamber of the clamping arm oil cylinder 1; a tilting electromagnetic directional control valve 9 for controlling the telescopic action of the tilting oil cylinder 14 is connected between the pump station 2 and the tilting oil cylinder 2; in this embodiment, by setting the maximum pressure values of the first pressure limiting valve 4 and the second pressure limiting valve 3 to limit the maximum oil pressure inside the clamping arm oil cylinder 1 during the loosening or clamping process of the clamping arm, the maximum acting force output by the clamping arm oil cylinder 1 can be limited, avoiding crushing the pickle jar due to excessive clamping force; by controlling the clamping arm electromagnetic directional control valve 10, the clamping arm can be controlled to clamp or release the pickle jar, and by controlling the tilting electromagnetic directional control valve 9, the clamping arm assembly 12 can be controlled to tilt, pour out the pickles in the pickle jar held by the clamping arm, replace manual labor to complete the removal of pickles, improve the efficiency of pickle removal, and at the same time reduce the labor intensity of workers.

[0022] In some embodiments, a two-way hydraulic lock 11 is connected between the rodless cavity of the clamping arm oil cylinder 1, the rod chamber of the clamping arm oil cylinder 1 and the first pressure limiting valve 4 and the second pressure limiting valve 3. After the clamping arm oil cylinder 1 controls the clamping arm to clamp the pickle jar, the two-way hydraulic lock 11 can keep the clamping arm oil cylinder 1 stable, preventing the piston position of the clamping arm oil cylinder 1 from changing due to pressure oil leakage, affecting the stability of clamping the pickle jar.

[0023] In some embodiments, a standby directional control valve 5 is arranged between the pump station 2 and the clamping arm oil cylinder 1. The standby directional control valve 5 is used to switch between two connection states between the pump station 2 and the clamping arm oil cylinder 1; one of the connected states is that the oil supply end of the pump station 2 is communicated with the rodless cavity of the clamping arm oil cylinder 1, and the rod chamber of the clamping arm oil cylinder 1 is communicated with the oil return end of the pump station 2. At this time, the telescopic movement of the clamping arm oil cylinder 1 can be controlled by the clamping arm electromagnetic directional control valve 10; the other connected state is that the oil supply end of the pump station 2 is communicated with the oil return end of the pump station 2, maintaining the standby state.

[0024] In some embodiments, a pressure sensor 8 is connected to the oil supply end of the pump station 2. The pressure sensor 8 can monitor the output oil pressure of the oil supply end of the pump station 2 in real time. When the output oil pressure is abnormal, it can be detected in time, avoiding losses caused by the long-term operation of the pump station 2 in an abnormal state.

[0025] In some embodiments, a balance valve 7 is provided between the tipping oil cylinder 6 and the tipping electromagnetic directional control valve 9. The balance valve 7 can balance the pressure in the hydraulic system by adjusting the inlet and outlet pressures of the tipping oil cylinder 6, preventing the pressure in the hydraulic system from being too high or too low, thereby ensuring the stability and safety of the hydraulic system.

[0026] In some embodiments, both the clamping arm electromagnetic directional control valve 10 and the tipping electromagnetic directional control valve 9 are three-position four-way electromagnetic directional control valves.

[0027] So far, the embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0028] The above-described embodiments merely represent some implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A hydraulic control system for a vegetable jar turning fixture, characterized in that: It includes: a pump station, a clamp arm cylinder and a flip cylinder; the pump station has an oil supply end and an oil return end; a clamp arm electromagnetic reversing valve for controlling the telescopic action of the clamp arm cylinder is connected between the pump station and the clamp arm cylinder, a first pressure limiting valve is connected to the rodless chamber of the clamp arm cylinder, and a second pressure limiting valve is connected to the rod chamber of the clamp arm cylinder; a flip electromagnetic reversing valve for controlling the telescopic action of the flip cylinder is connected between the pump station and the flip cylinder.

2. The hydraulic control system for the vegetable jar turning fixture according to claim 1 is characterized in that: A bidirectional hydraulic lock is connected between the rodless chamber of the clamp arm oil cylinder, the rod chamber of the clamp arm oil cylinder, the first pressure limiting valve, and the second pressure limiting valve.

3. The hydraulic control system for the vegetable jar turning fixture according to claim 1 is characterized in that: A standby reversing valve is arranged between the pump station and the clamp arm oil cylinder.

4. The hydraulic control system for the vegetable jar turning fixture according to claim 1 is characterized in that: The oil supply end of the pump station is connected with a pressure sensor.

5. The hydraulic control system for the vegetable jar turning fixture according to claim 1 is characterized in that: A balance valve is arranged between the flip oil cylinder and the flip electromagnetic reversing valve.

6. The hydraulic control system for the vegetable jar turning fixture according to claim 1 is characterized in that: The clamp arm electromagnetic reversing valve and the flip electromagnetic reversing valve are both three-position four-way electromagnetic reversing valves.

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