Energy-saving variable-amplitude oil cylinder

Abstract

The utility model discloses an energy-saving variable-amplitude oil cylinder. The energy-saving variable-amplitude oil cylinder comprises a cylinder barrel, a piston rod is arranged in the cylinder barrel, a piston of the piston rod divides the cylinder barrel into an oil inlet cavity and an oil return cavity, an oil inlet is formed in the position, close to the tail of the cylinder barrel, of the oil inlet cavity, an oil return opening is formed in the position, close to the front of the cylinder barrel, of the oil return cavity, a guide rod is inserted into the tail of the piston rod, and the tail of the guide rod is fixed to the tail of the cylinder barrel through a pressing plate. A lining is arranged at the front end of the guide rod, an inner cavity of the piston rod is divided into an oil storage cavity and an energy storage cavity by the lining and the guide rod, an oil passing opening communicated with the oil return cavity is formed in the side, away from the lining, of the piston rod, the guide rod is a hollow rod, and an energy storage oil way is formed in the tail of the cylinder barrel and communicated to the energy storage cavity through the hollow rod. According to the utility model, the problem of poor safety in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil cylinder technical field especially relates to a kind of energy-saving amplitude cylinder. BACKGROUND

[0002] The prior art with publication number CN204805208U, named "a new oil cylinder for energy-saving system", discloses a moving cylinder barrel including a moving cylinder barrel wall and a moving cylinder barrel piston located at the bottom of the moving cylinder barrel partition wall, the moving cylinder barrel is provided with an accumulator interface connected with an accumulator, for connecting the accumulator, so that the hydraulic oil located in the amplitude cylinder can freely reciprocate between the amplitude cylinder and the accumulator under the action of external force. However, the accumulator interface is also moving when the moving cylinder barrel works, that is, the length of the hose used to connect the accumulator interface and the accumulator must be left with a redundancy to adapt to the reciprocating motion of the moving cylinder barrel. The hose is not constrained, and winding, scratching and other phenomena are easy to occur, so the safety is poor. SUMMARY

[0003] The utility model aims at the deficiency of prior art, provide a kind of energy-saving amplitude cylinder with high safety.

[0004] To achieve the above-mentioned utility model purposes, the technical scheme of the utility model energy-saving amplitude cylinder is as follows:

[0005] An energy-saving amplitude cylinder, comprising a cylinder barrel, a piston rod is arranged in the cylinder barrel, the piston of the piston rod divides the cylinder barrel into an oil inlet cavity and an oil return cavity, an oil inlet is formed in the tail of the cylinder barrel next to the oil inlet cavity, an oil return is formed in the front of the cylinder barrel next to the oil return cavity, a guide rod is inserted into the tail of the piston rod, the tail of the guide rod is fixed to the tail of the cylinder barrel by a pressing plate, a bushing is arranged at the front end of the guide rod, the bushing and the guide rod divide the inner cavity of the piston rod into an oil storage cavity and an energy storage cavity, an oil passage is formed in the side of the piston rod away from the bushing and communicated with the oil return cavity, the guide rod is a hollow rod, an energy storage oil passage is formed in the tail of the cylinder barrel and communicated with the energy storage cavity through the hollow rod.

[0006] Preferably, the cylinder barrel comprises a cylinder body in sliding connection with the piston rod, the tail of the cylinder body is provided with a cylinder bottom, the guide rod is fixed to the front end of the cylinder bottom, the energy storage oil passage is formed in the cylinder bottom, the front end of the cylinder body is provided with a cylinder cover through which the piston rod passes, and the inner periphery of the cylinder cover is provided with a plurality of first sealing elements tightly fitted with the outer periphery of the piston rod.

[0007] Preferably, the cylinder cover is detachably connected with the cylinder body, and a plurality of second sealing elements are arranged on the cylinder cover and tightly fitted with the inner periphery of the cylinder body.

[0008] Preferably, the piston rod comprises a telescopic rod sliding between the cylinder cover and the bushing, the telescopic rod is provided with a hinge joint at one end extending out of the cylinder body, the telescopic rod is provided with a piston at one end extending into the cylinder body, the outer circumferential surface of the piston is provided with a plurality of third sealing elements closely fitted with the inner wall of the cylinder body, and the inner circumferential surface of the piston is provided with a plurality of fourth sealing elements closely fitted with the outer circumferential surface of the guide rod.

[0009] Preferably, the hinge joint is detachably connected with the telescopic rod, and the hinge joint is provided with a fifth sealing element closely fitted with the inner wall of the telescopic rod.

[0010] Preferably, the bushing is detachably connected with the guide rod, the outer circumferential surface of the bushing is provided with a plurality of sixth sealing elements closely fitted with the inner circumferential surface of the telescopic rod, and the inner circumferential surface of the bushing is provided with a plurality of seventh sealing elements closely fitted with the outer circumferential surface of the guide rod.

[0011] Compared with the prior art, the energy-saving variable amplitude oil cylinder has the beneficial effects that:

[0012] The hollow guide rod is provided with an energy storage oil path at the tail of the cylinder barrel, the energy accumulator is communicated with the energy storage cavity, the redundancy of the hose used for connecting the energy storage oil path and the energy accumulator can be greatly shortened, the hose can be conveniently restrained to a certain extent to avoid winding and scratching, and the safety can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a top view of the energy-saving variable amplitude oil cylinder.

[0014] Figure 2 It is an A-A sectional view of Figure 1 .

[0015] Figure 3 It is a structural schematic view of the cylinder barrel.

[0016] Figure 4 It is a structural schematic view of the piston rod.

[0017] Figure 5 It is a structural schematic view of the bushing.

[0018] Wherein, 1 is a cylinder barrel, 11 is a cylinder body, 111 is an oil inlet, 112 is an oil return port, 12 is a cylinder bottom, 121 is an energy storage oil path, 13 is a cylinder cover, 131 is a second sealing element, 132 is a first sealing element, 2 is a piston rod, 21 is a telescopic rod, 211 is an oil inlet, 22 is a hinge joint, 221 is a fifth sealing element, 23 is a piston, 231 is a third sealing element, 232 is a fourth sealing element, 3 is an oil inlet cavity, 4 is an oil return cavity, 5 is a guide rod, 6 is a bushing, 61 is a sixth sealing element, 62 is a seventh sealing element, 7 is an oil storage cavity, and 8 is an energy storage cavity. DETAILED DESCRIPTION

[0019] The utility model is further illustrated in conjunction with specific implementation manners, and it should be understood that these implementation manners are only used for illustrating the utility model and are not used for limiting the range of the utility model, and after reading the utility model, various equivalent modifications of the utility model made by those skilled in the art all fall within the range defined by the claims of the application.

[0020] As Figures 1-5 The utility model discloses an energy-saving amplitude cylinder, including cylinder 1, the cylinder includes cylinder body 11, the tail of cylinder body welds cylinder bottom 12, and the front end of cylinder body can detachable connection cylinder cover 13, install a plurality of second sealing pieces 131 that are closely combined with the inner periphery of cylinder body on the cylinder cover, install piston rod 2 in the cylinder body, and the piston rod includes telescopic rod 21, and the telescopic rod is hollow structure, install a plurality of first sealing pieces 132 that are closely combined with the outer periphery of telescopic rod on the inner periphery of cylinder cover, and the one end of telescopic rod that stretches out cylinder body can detachable connection articulated joint 22, install the fifth sealing piece 221 that is closely combined with the inner wall of telescopic rod on articulated joint, and the one end of telescopic rod that stretches into cylinder body is fixedly connected with piston 23, install a plurality of third sealing pieces 231 that are closely combined with the inner wall of cylinder body on the outer periphery of piston, and the piston divides the oil inlet cavity 3 and the oil return cavity 4 in the cavity of cylinder, and the oil inlet 111 is set up close to cylinder bottom in the cylinder body, and the oil return 112 is set up close to cylinder cover in the cylinder body, and the front end of cylinder bottom is fixedly connected with guide rod 5, and the guide rod is hollow rod, and the guide rod is inserted into the inner chamber of telescopic rod, and a plurality of fourth sealing pieces 232 that are closely combined with the outer periphery of guide rod are installed on the inner periphery of piston, and the front end of guide rod can detachable connection bushing 6, and the telescopic rod slips between bushing and cylinder cover, and a plurality of sixth sealing pieces 61 that are closely combined with the inner periphery of telescopic rod are installed on the outer periphery of bushing, and a plurality of seventh sealing pieces 62 that are closely combined with the outer periphery of guide rod are installed on the inner periphery of bushing, and the bushing and guide rod divide the inner chamber of piston rod into oil storage cavity 7 and energy storage cavity 8, and the oil inlet 211 that communicates with the oil return cavity is set up on the side of telescopic rod away from bushing, and the energy storage oil way 121 is set up in the cylinder bottom, and the energy storage oil way is communicated to energy storage cavity through hollow rod.

[0021] The specific working process and working principle of the utility model are as follows: when the piston rod is extended, the hydraulic oil in the oil tank enters the oil inlet cavity through the oil inlet, provides the main power, the hydraulic oil in the accumulator enters the energy storage cavity through the energy storage oil path and guide rod, provides the auxiliary power, the piston moves forward to compress the space of the oil return cavity and the oil storage cavity, the hydraulic oil in the oil return cavity and the oil storage cavity returns to the oil tank through the oil return port; when the piston rod is retracted, the space of the energy storage cavity and the oil inlet cavity is compressed, the hydraulic oil in the oil inlet cavity returns to the oil tank, the hydraulic oil in the energy storage cavity returns to the accumulator, stores energy, the hydraulic oil in the oil tank returns to the oil return cavity and the oil storage cavity, the oil storage cavity plays the role of the additional oil tank, effectively reduces the volume of the oil tank. The utility model adopts the hollow guide rod, opens the energy storage oil path at the tail of the cylinder barrel, connects the accumulator and the energy storage cavity, can greatly shorten the redundancy of the hose used for connecting the energy storage oil path and the accumulator, is more convenient to constrain to a certain extent, avoids the phenomena of winding and scratching, and can improve the safety.

Claims

1. An energy-saving amplitude cylinder, comprising a cylinder barrel, a piston rod arranged in the cylinder barrel, a piston of the piston rod dividing the cylinder barrel into an oil inlet cavity and an oil return cavity, the oil inlet cavity being provided with an oil inlet opening next to a tail of the cylinder barrel, the oil return cavity being provided with an oil return opening next to a front of the cylinder barrel, a guide rod being inserted into a tail of the piston rod, the tail of the guide rod being fixed to the tail of the cylinder barrel by a pressing plate, a bushing being arranged at a front end of the guide rod, the bushing and the guide rod dividing an inner cavity of the piston rod into an oil storage cavity and an energy storage cavity, an oil passage opening being arranged on a side of the piston rod away from the bushing and being communicated with the oil return cavity, characterized in that: The guide rod is a hollow rod, and an energy storage oil passage is formed in the tail of the cylinder barrel and is communicated to the energy storage cavity through the hollow rod.

2. The energy-saving amplitude-variable oil cylinder according to claim 1, characterized in that: The cylinder barrel includes a cylinder body in sliding connection with the piston rod, the tail of the cylinder body is provided with a cylinder bottom, the guide rod is fixedly connected to the front end of the cylinder bottom, the energy storage oil passage is formed in the cylinder bottom, the front end of the cylinder body is provided with a cylinder cover through which the piston rod passes, and the inner circumferential surface of the cylinder cover is provided with a plurality of first sealing elements in close contact with the outer circumferential surface of the piston rod.

3. The energy-saving amplitude-variable oil cylinder according to claim 2, characterized in that: The cylinder cover is detachably connected to the cylinder body, and the cylinder cover is provided with a plurality of second sealing elements in close contact with the inner circumferential surface of the cylinder body.

4. The energy-saving amplitude-variable oil cylinder according to claim 2, characterized in that: The piston rod includes an extension rod sliding between the cylinder cover and the bushing, the end of the extension rod extending out of the cylinder body is provided with a hinged joint, the end of the extension rod extending into the cylinder body is provided with a piston, the outer circumferential surface of the piston is provided with a plurality of third sealing elements in close contact with the inner wall of the cylinder body, and the inner circumferential surface of the piston is provided with a plurality of fourth sealing elements in close contact with the outer circumferential surface of the guide rod.

5. The energy-saving amplitude-variable oil cylinder according to claim 4, characterized in that: The hinged joint is detachably connected to the extension rod, and the hinged joint is provided with a fifth sealing element in close contact with the inner wall of the extension rod.

6. The energy-saving amplitude-variable oil cylinder according to claim 4, characterized in that: The bushing is detachably connected to the guide rod, the outer circumferential surface of the bushing is provided with a plurality of sixth sealing elements in close contact with the inner circumferential surface of the extension rod, and the inner circumferential surface of the bushing is provided with a plurality of seventh sealing elements in close contact with the outer circumferential surface of the guide rod.

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