Hydraulic quick locking device

Abstract

The utility model discloses a hydraulic quick locking device and belongs to the technical field of hydraulic locking mechanisms. The hydraulic cylinder comprises a hydraulic cylinder body, a hydraulic piston, a hydraulic rod and an oil tank, the hydraulic piston is located in the hydraulic cylinder body, and the hydraulic rod is fixed to the hydraulic piston and penetrates out of the upper end of the hydraulic cylinder body. An upper oil passing opening and a lower oil passing opening are formed in the positions, above and below the hydraulic piston, of the side portion of the hydraulic cylinder respectively, the outer portion of the hydraulic cylinder and the upper oil passing opening are communicated with an upper oil pipeline, the outer portion of the hydraulic cylinder and the lower oil passing opening are communicated with a lower oil pipeline, and the upper oil pipeline and the lower oil pipeline are communicated with the oil tank at the same time. And an upper electromagnetic valve and a lower electromagnetic valve are respectively arranged on the upper oil pipeline and the lower oil pipeline. According to the utility model, position locking and positioning adjustment can be rapidly carried out on a bearing part to which external force is applied, the safety is higher, and the service life is longer.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic locking mechanisms, and in particular relates to a hydraulic quick locker. Background Art

[0002] At present, for workpieces such as load-bearing support frames that can swing during routine work, positioning and locking operations are performed on the basis of the need to withstand external forces. Braking or other manual forced positioning is usually used to achieve this. For example, the support frame on the car carrier needs to allow the cargo vehicle to swing up and down in a bumpy state in order to reduce shock during the transportation of the vehicle, and it is necessary to avoid movement during the unloading process, so it is necessary to use hard positioning devices such as brakes to keep the carrier fixed. However, hard positioning such as brakes will cause excessive damage to the positioning mechanism, and if the positioning angle position and other states need to be adjusted, the positioning device needs to be manually adjusted, which will cause time loss. At the same time, if the hard positioning is not set properly, it will also cause accidents. Therefore, there is a need for a locking device that can quickly lock and facilitate safer adjustment operations and positioning safety effects. Utility Model Content

[0003] The utility model aims at the above-mentioned problems, makes up for the deficiencies of the prior art, and provides a hydraulic quick lock; the utility model can solve the above-mentioned problems, can lock and adjust the position of the load-bearing parts with external force more quickly and more safely, and has a longer service life.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions.

[0005] The utility model provides a hydraulic quick lock, comprising a hydraulic cylinder, a hydraulic piston, a hydraulic rod, and an oil tank, wherein the hydraulic piston is located in the hydraulic cylinder, the hydraulic rod is fixed to the hydraulic piston and passes through the upper end of the hydraulic cylinder, and is characterized in that the hydraulic piston is in the middle of the hydraulic cylinder, and the side of the hydraulic cylinder is respectively provided with an upper oil port and a lower oil port above and below the hydraulic piston, the outside of the hydraulic cylinder is respectively connected with an upper oil pipeline and a lower oil pipeline with the upper oil port and the lower oil port, the upper oil pipeline and the lower oil pipeline are simultaneously connected with the oil tank, and an upper solenoid valve and a lower solenoid valve are respectively provided on the upper oil pipeline and the lower oil pipeline.

[0006] Furthermore, the upper oil pipeline and the lower oil pipeline are simultaneously combined in a main pipeline, and the main pipeline is connected to the oil tank.

[0007] Furthermore, a one-way valve and a throttle valve are arranged in parallel on the main pipeline.

[0008] Furthermore, the opening direction of the one-way valve is the flow direction of the hydraulic oil from the oil tank to the hydraulic cylinder.

[0009] Furthermore, the upper oil pipeline and the lower oil pipeline are respectively connected to the normally closed points of the upper solenoid valve and the lower solenoid valve, and the upper oil pipeline is cut off when the upper solenoid valve loses power, and the lower oil pipeline is cut off when the lower solenoid valve loses power.

[0010] Furthermore, a base with an articulated shaft is provided at the bottom end of the hydraulic cylinder, and the hydraulic cylinder is hinged to a fixed foundation through the base.

[0011] Furthermore, an articulated base is provided, and the outer end of the hydraulic cylinder can be articulated with the articulated base.

[0012] Furthermore, an extension rod is provided, the hydraulic cylinder is detachably connected to one end of the extension rod, and the other end of the extension rod is hinged to the hinged base.

[0013] The beneficial effects of the utility model.

[0014] The utility model can control the solenoid valve to be closed by electronic control in the form of hydraulics, quickly cut off the oil circuit connected with the inside of the hydraulic cylinder to quickly lock the position of the hydraulic rod, and realize rapid positioning and locking of the load-bearing member with external force applied by the hydraulic cylinder. Soft positioning can be achieved through hydraulics, which can extend the service life. In addition, when inaccurate positioning occurs, the hydraulics can also provide a buffering effect to reduce the possibility of accidents, and the load-bearing member can also be made to swing freely when the solenoid valve is energized, so it is more flexible to use and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0016] Figure 1 It is a brief schematic diagram of the overall structure of the utility model.

[0017] Markings in the figure: 1 is the hydraulic cylinder, 2 is the hydraulic piston, 3 is the hydraulic rod, 4 is the oil tank, 5 is the upper oil port, 6 is the lower oil port, 7 is the upper oil pipeline, 8 is the lower oil pipeline, 9 is the upper solenoid valve, 10 is the lower solenoid valve, 11 is the main pipeline, 12 is the one-way valve, 13 is the throttle valve, 14 is the base, 15 is the fixed foundation, 16 is the articulated base, 17 is the extension rod, and 18 is the load-bearing part. DETAILED DESCRIPTION

[0018] As shown in the accompanying drawings, this embodiment provides a hydraulic quick lock, including a hydraulic cylinder 1, a hydraulic piston 2, a hydraulic rod 3, and an oil tank 4. The hydraulic piston 2 is located in the hydraulic cylinder 1, the hydraulic rod 3 is fixed to the hydraulic piston 2 and passes through the upper end of the hydraulic cylinder 1, and the hydraulic piston 2 is in the middle of the hydraulic cylinder 1, dividing the hydraulic cylinder 1 into two independent cavities in the upper and lower parts.

[0019] An upper oil port 5 and a lower oil port 6 are respectively provided above and below the hydraulic piston 2 on the side of the hydraulic cylinder 1. The upper oil port 5 is located at the upper cavity, and the lower oil port 6 is located at the lower cavity.

[0020] The outside of the hydraulic cylinder 1 is connected to the upper oil port 5 and the lower oil port 6 respectively via an upper oil pipeline 7 and a lower oil pipeline 8 . The upper oil pipeline 7 and the lower oil pipeline 8 are simultaneously connected to a main pipeline 11 , and the main pipeline 11 is connected to the oil tank 4 .

[0021] A one-way valve 12 and a throttle valve 13 are arranged in parallel on the main pipeline 11. The opening direction of the one-way valve 12 is the flow direction of the hydraulic oil from the oil tank 4 to the hydraulic cylinder 1. In this way, when the hydraulic oil flows from the oil tank 4 to the hydraulic cylinder 1, it can flow through the one-way valve 12 and the throttle valve 13 at the same time. When the load-bearing member 18 collapses, the hydraulic oil will flow back to the oil tank 4 from the hydraulic cylinder 1. At this time, it can only flow through the throttle valve 13 with a small flow rate, so that the hydraulic rod 3 will not fall quickly, and can provide a better buffering effect, and avoid the rapid collision and damage of the goods on the load-bearing member 18 as much as possible.

[0022] An upper solenoid valve 9 and a lower solenoid valve 10 are respectively provided on the upper oil pipeline 7 and the lower oil pipeline 8. The upper oil pipeline 7 and the lower oil pipeline 8 are respectively connected to the normally closed points of the upper solenoid valve 9 and the lower solenoid valve 10. When the upper solenoid valve 9 loses power, the upper oil pipeline 7 is cut off, and when the lower solenoid valve 10 loses power, the lower oil pipeline 8 is cut off.

[0023] In the free state, the upper solenoid valve 9 and the lower solenoid valve 10 are both electrically connected, and the upper and lower chambers of the hydraulic cylinder 1 are connected to the oil tank 4 through the upper oil pipeline 7 and the lower oil pipeline 8 respectively, resulting in the hydraulic piston 2 being in a free state capable of moving up and down, and the load-bearing member 18 being able to swing freely.

[0024] When the load-bearing member 18 is dragged to a certain angle by an external force, the solenoid valve is electrically controlled to lose power, and the current positions of the hydraulic piston 2 and the hydraulic rod 3 are quickly locked to achieve position locking of the load-bearing member 18. When the locking position of the load-bearing member 18 needs to be adjusted, the upper solenoid valve 9 or the lower solenoid valve 10 can be electrically controlled to be turned on, and the hydraulic oil capacity in the upper and lower chambers of the hydraulic cylinder 1 can be quickly adjusted to change the position of the hydraulic piston 2. After the adjustment is completed, the corresponding upper solenoid valve 9 or the lower solenoid valve 10 is electrically controlled to be cut off, thereby quickly changing the stop locking position of the load-bearing member 18.

[0025] In terms of installation, a base 14 with an articulated shaft is provided at the bottom of the hydraulic cylinder 1, and the hydraulic cylinder 1 is hinged to a fixed foundation 15 through the base 14, so that the fixed foundation 15 is fixed at a position where installation is required.

[0026] In order to connect with the load-bearing member 18 and realize the movement between the load-bearing member 18, an articulated base 16 is also provided. The outer end of the hydraulic cylinder 1 can be articulated with the articulated base 16 to fix the articulated base 16 and the load-bearing member 18.

[0027] If the load-bearing member 18 is located far from the hydraulic cylinder 1 , an extension rod 17 may be further provided. The hydraulic cylinder 1 is detachably connected to one end of the extension rod 17 , and the other end of the extension rod 17 is hinged to the hinge base 16 .

[0028] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the implementation mode of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

Claims

1. A hydraulic quick lock, comprising a hydraulic cylinder (1), a hydraulic piston (2), a hydraulic rod (3), and an oil tank (4), wherein the hydraulic piston (2) is located in the hydraulic cylinder (1), and the hydraulic rod (3) is fixed to the hydraulic piston (2) and extends out from the upper end of the hydraulic cylinder (1), characterized in that: The hydraulic piston (2) is located in the middle of the hydraulic cylinder (1); an upper oil port (5) and a lower oil port (6) are provided on the side of the hydraulic cylinder (1) above and below the hydraulic piston (2), respectively; an upper oil pipeline (7) and a lower oil pipeline (8) are connected to the upper oil port (5) and the lower oil port (6) outside the hydraulic cylinder (1), respectively; the upper oil pipeline (7) and the lower oil pipeline (8) are connected to the oil tank (4) at the same time; and an upper solenoid valve (9) and a lower solenoid valve (10) are provided on the upper oil pipeline (7) and the lower oil pipeline (8), respectively.

2. A hydraulic quick lock according to claim 1, characterized in that: The upper oil pipeline (7) and the lower oil pipeline (8) are simultaneously connected to a main pipeline (11), and the main pipeline (11) is connected to the oil tank (4).

3. A hydraulic quick lock according to claim 2, characterized in that: A one-way valve (12) and a throttle valve (13) are arranged in parallel on the main pipeline (11).

4. A hydraulic quick lock according to claim 3, characterized in that: The opening direction of the one-way valve (12) is the flow direction of the hydraulic oil from the oil tank (4) to the hydraulic cylinder (1).

5. The hydraulic quick lock according to claim 1, characterized in that: The upper oil pipeline (7) and the lower oil pipeline (8) are respectively connected to the normally closed points of the upper solenoid valve (9) and the lower solenoid valve (10); when the upper solenoid valve (9) loses power, the upper oil pipeline (7) is cut off; when the lower solenoid valve (10) loses power, the lower oil pipeline (8) is cut off.

6. A hydraulic quick lock according to claim 1, characterized in that: The bottom end of the hydraulic cylinder (1) is provided with a base (14) with an articulated shaft, and the hydraulic cylinder (1) is articulated to a fixed foundation (15) via the base (14).

7. The hydraulic quick lock according to claim 1, characterized in that: An articulated base (16) is also provided, and the outer end of the hydraulic cylinder (1) can be articulated to the articulated base (16).

8. A hydraulic quick lock according to claim 7, characterized in that: An extension rod (17) is also provided, the hydraulic cylinder (1) being detachably connected to one end of the extension rod (17), and the other end of the extension rod (17) being hinged to the hinged base (16).

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