Pallet truck hydraulic device
A technology of hydraulic devices and pallet trucks, applied in the direction of fluid pressure actuation devices, lifting devices, servo motors, etc.
Active Publication Date: 2019-03-29
NINGHAI BAI CHENG MACHINERY CO LTD
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Problems solved by technology
[0002] Manual pallet truck is a kind of tool truck suitable for short-distance handling of goods. It is widely used in logistics, warehousing, shopping malls, factories and other places. The working conditions of the lifting cylinder in the hydraulic unit are: lifting, lowering, Maintenance and so on require manual operation to realize its various functions. When handling special goods, especially when handling dangerous goods, it cannot meet the requirements, and it cannot be kept in a low-position standby state all the time.
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[0019] like Figure 1 to Figure 4 As shown, the pallet truck hydraulic device of the present invention includes a working oil cylinder 1, a plunger pump 2, an oil pool 3, a shell base 4, a horizontal lever 5 assembled on the shell base 4, a vertical lever 6 and a screw plug 7, and a vertical lever assembled on the vertical lever 6, the striker 69 abutting against the vertical lever 6, the cone valve body 71 assembled in the third cavity 413 and the steel ball 8 between the cone valve body 71 and the striker 69.
[0020] The case base 4 includes a main body 41 , a first lug 42 and a pair of second lugs 43 extending from the main body 41 . The main body 41 defines a receiving hole 410 . The first lug 42 is located above the pair of second lugs 43 . The first lug 42 has a fourth through hole 421 and the pair of second lugs 43 has a first through hole 431 . The horizontal lever 5 is provided with a second through hole 51 extending therethrough. A pair of second lugs 43 are pos...
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The invention provides a hydraulic device of a tray carriage. The device comprises a shell base, a horizontal lever, a vertical lever, a screw, a striker, a second working valve composed of a conical valve body, a valve body base and a first spring, a second spring and a steel ball, wherein the shell base comprises a first cavity body, a second cavity body and a third cavity body which are communicating; the steel ball and the second cavity body constitute a first working valve; the horizontal lever presses the screw to move during rotation of the horizontal lever; the screw drives the vertical lever to sway; the vertical lever drives the striker to move in the first cavity body so as to make the first cavity body communicate with the second cavity body; the conical valve body moves towards the second cavity body under driving of the first spring so as to close the third cavity body; a negative pressure is generated when a plunger pump carries out an oil suction stroke, and oil liquid is sucked from an oil pool into the plunger pump; and when the plunger pump carries out an oil discharge stroke, the steel ball closes the first working valve under driving of a liquid flow so as to disconnect the first cavity body and the second cavity body, the liquid flow pushes the conical valve body to open the second working valve so as to make the second cavity body communicate with the third cavity body, and then the oil liquid enters a working oil cylinder.
Description
【Technical field】 [0001] The invention relates to a pallet truck hydraulic device. 【Background technique】 [0002] Manual pallet truck is a kind of tool truck suitable for short-distance handling of goods. It is widely used in logistics, warehousing, shopping malls, factories and other places. The working conditions of the lifting cylinder in the hydraulic unit are: lifting, lowering, Keeping and so on all need manual operation to realize its various functions, when carrying special goods, especially when carrying dangerous goods, then can not meet the requirements, it can not keep in the low position standby state all the time. [0003] In view of this, it is necessary to provide an improved pallet truck hydraulic device to overcome the defects in the prior art. 【Content of invention】 [0004] The object of the present invention is to provide a pallet truck hydraulic device that can automatically descend. [0005] In order to solve the above-mentioned technical problems...
Claims
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IPC IPC(8): B66F9/22F15B11/08F15B13/02
CPCB66F9/22F15B11/08F15B13/021
Inventor 葛国安陈景璐
Owner NINGHAI BAI CHENG MACHINERY CO LTD