A pressure-controllable tensioner oiling device
A technology of tensioning device and oil filling device, which is used in transportation and packaging, engine lubrication, lubricating oil control valve, etc., can solve problems such as failure to realize the conversion of oil filling and working lock state, and inability to ensure overflow.
Inactive Publication Date: 2014-10-01
SANY HEAVY MACHINERY
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Problems solved by technology
In the above two schemes, the butter oil injection valve is only a one-way oil injection valve, which cannot guarantee that overflow will occur when the pressure reaches the rated pressure value, and the transition between oil injection and working lock state is not realized
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Embodiment Construction
[0020] The present invention will be further described below in combination with principle diagrams and specific operation examples.
[0021] see figure 1 The state schematic diagram of the best embodiment shown, a pressure controllable tensioner oil injection device of the present invention includes a valve sleeve 1, a valve body 2 with a hollow cavity, a connecting seat 3 with a hollow cavity and a hollow cavity The valve head 4 of the body, the valve head 4 is located between the valve body 2 and the connecting seat 3, one end extends into the hollow cavity of the valve body 2 and has a stroke in the hollow cavity of the valve body 2, and the other end is hollow towards the connecting seat 3 At the opening of the cavity, the other end of the connecting seat 3 is connected to the oil cylinder. The valve sleeve 1 can be screwed on the valve body 2 and the connecting seat 3 through an internal thread. The valve sleeve 1 is provided with an overflow hole 11, the hollow cavity...
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The invention discloses a pressure-controllable oiling device for a tension device, which comprises a valve sleeve, a valve body with a hollow cavity, a connecting seat, a valve head and an elastic overflow component. The valve head is positioned between the valve body and the connecting seat, one end of the valve head extends into the hollow cavity of the valve body and has a travel in the hollow cavity of the valve body, the other end of the valve head faces an opening of a hollow cavity of the connecting seat, the other end of the connecting seat is connected with an oil cylinder, the valve sleeve is rotatably sleeved on the valve body and the connecting seat, an overflow hole is arranged on the valve sleeve, the elastic overflow component is positioned between the valve body and the connecting seat, one end of the elastic overflow component is abutted to the valve body, and the other end of the elastic overflow component is kept fixed relative to one end of the valve body close to the connecting seat. An oiling state and a locking state are combined by adjusting the valve head, initial oiling pressure can be ensured to reach a determinate value, overflow due to pressure increase is avoided during operation of the tension device, and the oiling device is more suitable for various complicated service conditions of the tension device for caterpillar drive engineering machinery.
Description
technical field [0001] The invention relates to a high-pressure injecting device for butter medium in a crawler belt tensioning device of construction machinery, in particular to a pressure-controllable tensioning device oiling device. Background technique [0002] At present, there is a check valve inside the oil injection valve of the tensioning device. When oil is injected into the tensioning device, the internal pressure of the tensioning oil cylinder increases with the increase of the external injection pressure, and it cannot guarantee that there is a certain pressure in the oil cylinder. In the process of track tensioning, the tension of the track cannot be controlled by using the traditional oil injection valve. The control of the tension depends on the measurement of the overhang of the track. This measurement method has a large error. When the tension is found to be too large, In addition, it is necessary to drain the oil and release the pressure, which is inconven...
Claims
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IPC IPC(8): F16N23/00B62D55/092B62D55/30
Inventor 李春德俞宏福汪春晖
Owner SANY HEAVY MACHINERY