Hydraulic cylinder locking mechanism

Abstract

The application relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder locking mechanism, which comprises a hydraulic cylinder, the hydraulic cylinder is provided with an oil port one and an oil port two which are connected with external control structures, the top of the hydraulic cylinder is provided with a locking mechanism, the locking mechanism comprises a center-symmetric locking oil cylinder, the end of the locking oil cylinder is provided with a clamping structure which limits the movable part of the hydraulic cylinder; the locking oil cylinder is arranged reversely to the hydraulic cylinder, when the hydraulic cylinder is stretched or retracted, the locking oil cylinder is in a contraction state, when the hydraulic cylinder is static, the locking oil cylinder is in an elongation clamping state. The locking mechanism is arranged at the end of the hydraulic cylinder, the center-symmetric locking oil cylinder is arranged in the locking mechanism, the locking oil cylinder and the hydraulic cylinder are arranged reversely, so that the locking oil cylinder does not affect the hydraulic cylinder when the hydraulic cylinder is normally stretched or retracted, and the locking oil cylinder supports and locks the hydraulic cylinder when the hydraulic cylinder is static.

Description

Technical Field

[0001] This application relates to the technical field of hydraulic cylinders, and in particular to a hydraulic cylinder locking mechanism. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device, eliminates transmission backlash, and provides smooth movement. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] During use, hydraulic cylinders are typically required to provide stable external support for extended periods, bearing external loads without any displacement. Therefore, it is necessary to lock and position the piston rod of the hydraulic cylinder.

[0004] Existing hydraulic cylinders primarily rely on the thrust of hydraulic oil within the cylinder body to support and position the piston rod. This single locking method makes the piston rod prone to displacement when the internal oil pressure decreases, resulting in poor locking performance and potential safety hazards. Therefore, to address these issues, this application provides a hydraulic cylinder locking mechanism. Utility Model Content

[0005] To address the aforementioned problems, this application provides a hydraulic cylinder locking mechanism.

[0006] This application provides a hydraulic cylinder locking mechanism, including a hydraulic cylinder, with an oil port one and an oil port two for docking with an external control structure. A locking mechanism is installed on the top of the hydraulic cylinder, and the locking mechanism includes locking cylinders arranged symmetrically in the center, and a clamping structure is provided at the end of the locking cylinder to limit the movement of the hydraulic cylinder.

[0007] The locking cylinder operates in the opposite direction to the hydraulic cylinder. When the hydraulic cylinder extends or retracts, the locking cylinder is in a retracted state; when the hydraulic cylinder is stationary, the locking cylinder is in an extended clamping state.

[0008] By setting a locking mechanism at the end of the hydraulic cylinder, and setting a centrally symmetrical locking cylinder in the locking mechanism, the locking cylinder and the hydraulic cylinder are arranged oppositely, so that when the hydraulic cylinder is extending or retracting normally, the locking cylinder does not affect it, while when the hydraulic cylinder is stationary, the locking cylinder locks and supports the hydraulic cylinder.

[0009] Preferably, the front end of the locking cylinder is connected to an oil pipe.

[0010] Preferably, the end of the locking cylinder is connected to an oil pipe.

[0011] Preferably, a solenoid valve is installed on the first oil pipe and a solenoid valve is installed on the second oil pipe.

[0012] Preferably, a partition is provided on the inner side of the locking mechanism, and a control system is provided on the partition.

[0013] Preferably, the clamping structure includes a clamping plate fixed to the end of the locking cylinder, and the inner side of the clamping plate is fixed with a protruding ridge.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] By setting a locking mechanism at the end of the hydraulic cylinder, and setting a centrally symmetrical locking cylinder in the locking mechanism, the locking cylinder and the hydraulic cylinder are arranged oppositely, so that when the hydraulic cylinder is extending or retracting normally, the locking cylinder does not affect it, while when the hydraulic cylinder is stationary, the locking cylinder locks and supports the hydraulic cylinder. Attached Figure Description

[0016] Figure 1 It is the isometric drawing in Embodiment 1 of this application;

[0017] Figure 2 This is an internal structural diagram of the locking mechanism in Embodiment 1 of this application;

[0018] Figure 3 This is a longitudinal sectional view of the locking mechanism in Embodiment 1 of this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Hydraulic cylinder; 2. Oil port one; 3. Oil port two; 4. Locking mechanism; 41. Partition plate; 5. Locking cylinder; 6. Oil pipe one; 7. Oil pipe two; 8. Solenoid valve one; 9. Solenoid valve two; 10. Control system; 11. Clamping plate; 12. Protruding ridge. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 - Figure 3 This application will be described in further detail.

[0021] Example 1:

[0022] A hydraulic cylinder locking mechanism, as described in the reference Figure 1 - Figure 3 The hydraulic cylinder 1 is provided with oil port 2 and oil port 3 for docking with the external control structure. A locking mechanism 4 is installed on the top of the hydraulic cylinder 1. The locking mechanism 4 includes locking cylinders 5 arranged symmetrically in the center. A clamping structure is provided at the end of the locking cylinder 5 to limit the moving part of the hydraulic cylinder 1.

[0023] The locking cylinder 5 operates in the opposite direction to the hydraulic cylinder 1. When the hydraulic cylinder 1 extends or retracts, the locking cylinder 5 is in a retracted state. When the hydraulic cylinder 1 is stationary, the locking cylinder 5 is in an extended clamping state.

[0024] By setting a locking mechanism 4 at the end of the hydraulic cylinder 1, and setting a centrally symmetrical locking cylinder 5 in the locking mechanism 4, the locking cylinder 5 and the hydraulic cylinder 1 are arranged oppositely, so that when the hydraulic cylinder 1 is normally extending or retracting, the locking cylinder 5 does not affect it, while when the hydraulic cylinder 1 is stationary, the locking cylinder 5 locks and supports the hydraulic cylinder 1.

[0025] The front end of the locking cylinder 5 is connected to an oil pipe 6. The rear end of the locking cylinder 5 is connected to an oil pipe 7. An independent control mechanism is installed outside the oil pipes 6 and 7 to independently control the hydraulic oil inside the oil pipes 6 and 7, ensuring that their movement is opposite to that of the hydraulic cylinder 1. A solenoid valve 8 is installed on the oil pipe 6, and a solenoid valve 9 is installed on the oil pipe 7. A partition 41 is installed inside the locking mechanism 4, and a control system 10 is installed on the partition 41. The control system 10 is used to control the solenoid valves 8 and 9, thereby controlling the on / off flow of hydraulic oil to the two locking cylinders 5. In addition, the control system 10 is also connected to the external main control system 10 of the hydraulic cylinder 1 to achieve the opposite movement of the hydraulic cylinder 1 and avoid adverse effects on the normal operation of the hydraulic cylinder 1.

[0026] The clamping structure includes a clamping plate 11 fixed to the end of the locking cylinder 5, and a protruding rib 12 is fixed on the inner side of the clamping plate 11. The clamping plate 11 and the movable part of the hydraulic cylinder 1 are similarly arranged and have a clearance fit. The protruding rib 12 is used to increase the friction between the clamping plate 1 and the movable part of the hydraulic cylinder 1 after clamping.

[0027] The foregoing description of an exemplary embodiment of a hydraulic cylinder locking mechanism provided by this disclosure refers to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A hydraulic cylinder locking mechanism, comprising a hydraulic cylinder (1), the hydraulic cylinder (1) is provided with an oil port one (2) and an oil port two (3) which are connected with external control structure, characterized in that: The top of the hydraulic cylinder (1) is equipped with a locking mechanism (4), which includes a locking cylinder (5) arranged symmetrically at the center, and a clamping structure is provided at the end of the locking cylinder (5) to limit the movement of the hydraulic cylinder (1). The locking cylinder (5) operates in the opposite direction to the hydraulic cylinder (1). When the hydraulic cylinder (1) extends or retracts, the locking cylinder (5) is in a contracted state. When the hydraulic cylinder (1) is stationary, the locking cylinder (5) is in an extended clamping state.

2. The hydraulic cylinder locking mechanism of claim 1, wherein: The front end of the locking cylinder (5) is connected to an oil pipe (6).

3. The hydraulic cylinder locking mechanism of claim 2, wherein: The locking cylinder (5) is connected to an oil pipe (7) at its end.

4. The hydraulic cylinder locking mechanism of claim 3, wherein: Solenoid valve 1 (8) is installed on oil pipe 1 (6), and solenoid valve 2 (9) is installed on oil pipe 2 (7).

5. The hydraulic cylinder locking mechanism of claim 4, wherein: The locking mechanism (4) has a partition (41) on its inner side, and a control system (10) is provided on the partition (41).

6. The hydraulic cylinder locking mechanism of claim 1, wherein: The clamping structure includes a clamping plate (11) fixed to the end of the locking cylinder (5), and a protruding rib (12) is fixed on the inner side of the clamping plate (11).

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