KR200225414Y1 - Hydraulic lifting system - Google Patents

Abstract

The present invention relates to a hydraulic lifting device used for detaching and attaching a vehicle component in a vehicle maintenance. The lifting device includes a support plate, a lifting part consisting of a cylinder and a piston rod, an oil tank, and supplying oil from the oil tank to the cylinder. A hydraulic pressure supply unit and a pressure reducing unit for lowering the piston rod, wherein the support plate is formed with an anti-slip jaw on the upper surface of each corner portion, and has a connection portion connected to the piston rod head at a lower center of gravity thereof; A handle is attached to a side of the cylinder, and a wheel support shaft on which a moving wheel is installed is fixed to a lower surface of the cylinder; The hydraulic supply unit communicates with a hydraulic tube connected to a lower surface of the cylinder, the hydraulic tube and a check valve interposed therebetween, and an oil discharge cylinder including the oil tank, a check valve, and a relief valve communicated with the hydraulic tube through the spring. A pedal formed with a protrusion for pressing the rod end of the piston in contact with the rod; The decompression unit is characterized in that the pressure reducing valve for opening and closing the hydraulic pipe connected to the cylinder stop, the hydraulic valve is connected to the cylinder side and the oil tank, which is provided with a check valve in sequence.

Description

Hydraulic lifting device for attaching / detaching vehicle parts {HYDRAULIC LIFTING SYSTEM}

The present invention relates to a hydraulic lifting device for vehicle maintenance, and more particularly, to a hydraulic lifting device which is put into a lower surface of a vehicle that is located in a dock or lifted by a lifting device and is used for detaching and attaching a vehicle component.

Conventional vehicle lifting device is a 'lift device' disclosed in the Republic of Korea Utility Model Publication No. 98-87478 (see Fig. 1). The elevating device is a pantograph shape between the horizontal base 114 and the work bench 112, by connecting the same length of the links 126a, 126b, 126c, 126d, respectively, in the center and connecting the X-shaped links up and down. In the form of placing one parallel to one phase and supporting the work table 112, the lower end of the X-shaped link (126b) rotatably compress one side of the base 114, and the lower end of the link (126a) a roller ( 115 is provided, and the base 114 is slidable. On the other hand, the upper end of the upper X-shaped link 126d is pivotally rotatable to one side of the work bench 112, and the upper end of the link 126c is provided with a roller 113 to enable riding of one surface of the work bench 112. . In addition, a cylinder 122 is installed on the upper link 126d and the base 114 to expand and contract the piston rod 124 from the cylinder body 122 by hydraulic pressure, thereby expanding and contracting the pantograph. It is a structure for elevating 112).

Another conventional vehicle maintenance hoisting device is disclosed in Korean Utility Model Publication No. 88-3344, "Danction slider hoisting device for fixed-cost hydraulic lifts" (see Fig. 2). The elevating device inserts a piston 224 into a pair of hydraulic cylinders 222 installed on the ground, installs the fixing rod 234 at the upper end of the exposed portion, and extends the connecting rod 236 downward from the fixing protrusion 234a. By connecting to the lower operating plate 238, and coupled to the lower operating plate 238, the mating connection rope (R2) is configured to lift both pistons at the same time, and the auxiliary column 237 in parallel with the hydraulic cylinder 222 In a known hydraulic lift to install the slow slider 214, a pair of rope fixing rings 235a are projected to the hydraulic cylinder upper fixing plate 235, and the piston upper fixing members 234 have the same size on each side. When the guide roller 232 is rotatably inserted, the end of the wire rope R1, which is bound to the slow slider 214, is wound on the upper surface of the guide roller 232 bonded to the horizontal axis of the piston. Keen structure. When the piston 224 is raised, the lifting device 212 is raised along the slow slider 214 as the rope R1 is wound around the guide roller 232 as the piston 224 is raised.

However, such a conventional vehicle maintenance lifting device is used only for lifting and lowering the entire vehicle in a fixed position. When the vehicle parts are attached or detached, the work must be performed using human force, resulting in inaccurate precision. There was discomfort due to the limitations.

The present invention is designed to solve the limitations and inconveniences of the conventional vehicle maintenance hoisting device as described above, which is lifted by the hoisting device or used for the removal and attachment of parts during vehicle maintenance at the bottom of the vehicle located in the dock. An object of the present invention is to provide a hydraulic lifting device that overcomes the limitations. In addition, the lifting device of the present invention aims to provide a hydraulic lifting device that is easy to move at the time of detachment and attachment of parts. In addition, an object of the present invention is to provide a support plate that matches the size of a component to be detached and attached, and that corresponds to the angle of the component to be attached or attached.

In order to achieve the above object, the hydraulic lifting device of the present invention is a lifting device including a support plate, a cylinder and a piston rod lifting unit, an oil tank, a pressure supply unit for supplying oil from the oil tank to the cylinder, and a pressure reducing rod lowering the piston rod. The support plate is provided with a non-slip jaw is formed on the upper surface of each corner portion, the connecting plate is formed in the lower center of gravity connected to the piston rod head; A handle is attached to a side of the cylinder, and a wheel support shaft on which a moving wheel is installed is fixed to a lower surface thereof; The hydraulic supply unit communicates with a hydraulic tube connected to a lower surface of the cylinder, the hydraulic tube and a check valve interposed therebetween, and an oil discharge cylinder including the oil tank, a check valve, and a relief valve communicated with the hydraulic tube through the spring. A pedal formed with a protrusion for pressing the rod end of the piston in contact with the rod; The pressure reducing section is composed of a pressure reducing valve for opening and closing the hydraulic pipe connected to the cylinder stop, and a hydraulic pipe connecting the cylinder side and the oil tank, in which a check valve is provided in sequence.

1 and 2 is a cross-sectional view showing a conventional vehicle maintenance lifting device,

Figure 3a, 3b is a cross-sectional view showing a lifting device of the present invention,

4 is a plan view showing a lifting device of the present invention,

5a, 5b is a partial cross-sectional view showing the hydraulic supply of the present invention,

6 shows a hydraulic circuit diagram of the elevator device of the present invention.

※ Explanation of code for main part of drawing

10: base plate 12: stopper

20: guide plate 22: guide groove

24: Joe

30: connection part 32: movable part

33, 35: protrusion 34: fixing part

38: left and right lever

40: lift 42: cylinder

44: piston 46: rod

48: handle

50: hydraulic supply unit 52: hydraulic pipe

53: relief valve 54: oil discharge cylinder

55: piston 56: rod

58: pedal 59: protrusion

60: pressure reducing unit

62: hydraulic pipe 64: pressure reducing valve

70: wheel 72: support shaft

B: Male thread N1, N2: Female thread

H1, H2: Hinge S: Spring

T: Oil tanks V1, V2, V3: Check valve

Hereinafter, the present invention will be described in detail by the accompanying drawings, Figures 3a and 3b is a cross-sectional view showing the hydraulic lifting device of the present invention observed in the direction of rotating the virtual vertical axis at a 90 ° angle to the rotation axis, Figure 4 5A and 5B are partial sectional views showing the hydraulic supply unit of the elevator device of the present invention in a direction in which a virtual vertical axis is rotated at an angle of 90 ° to each other by a rotation axis, and FIG. 6 is a hydraulic circuit diagram of the present invention.

Lifting device for removing and attaching vehicle parts according to an embodiment of the present invention is a lifting plate consisting of a support plate, a cylinder and a piston rod, an oil tank, a hydraulic supply unit for supplying oil from the oil tank to the cylinder, a pressure reducing unit for lowering the piston rod The support plate 10 is formed with a non-slip jaw protruding from the upper surface of each corner portion, the connection portion 30 is formed orthogonal / connected to the piston rod 46 head at the bottom center of gravity It is done; A handle 48 is attached to the stop side of the cylinder 42, and a wheel support shaft 72 on which a moving wheel 70 is installed is fixed to the bottom surface of the cylinder 42; The oil tank (T) is formed to surround the outer peripheral surface of the cylinder (42); The hydraulic pressure supply unit 50 communicates with the hydraulic pipe 52 connected to the lower surface of the cylinder 42, the hydraulic pipe 52 and the check valve V1 interposed therebetween, and the oil tank T and the check valve V2. ), The oil discharge cylinder 54 communicating with the hydraulic pipe 52 with the relief valve 53 interposed therebetween and including the spring S on the inner circumferential surface thereof, and the rod of the piston 55 contacting the spring S ( 56) a pedal 58 formed with a projection 59 for pressing the end with the hinge H2 as an axis; The pressure reduction unit 60 is a cylinder 42 side and an oil tank T, in which a pressure reducing valve 64 for opening and closing the hydraulic pipe 62 connected to the cylinder 42 stops, and a check valve V3 are sequentially installed. It consists of the hydraulic pipe 62 which connects.

According to another embodiment of the present invention, the lifting device has a stop protrusion 12 is formed on the upper surface of each corner of the support plate 10, the anti-slip jaw 24 is inserted into the stop protrusion 12 and (結 揷) The guide groove 22 is formed at the upper end of the guide plate 24 formed in the center so as to be obtained by the support plate 10.

According to another embodiment of the present invention, the connecting portion 30 of the support plate 10 and the piston rod 46 head of the elevating device is a movable portion 32 which is installed on the lower surface of the support plate 10, and the lower portion of the movable portion 32 and It is connected to the hinge (H1) to enable the left and right reciprocating portion 34 is installed in the head of the piston rod 46, penetrating formed in the side projections (33, 35) of the movable portion 32 and the fixing portion 34 The male screw B inserted into the female threads N1 and N2 is connected to the left and right reciprocating through the rotation of the left and right adjustment lever 38 formed at one end thereof.

Referring to the state of use and effects of the present invention hydraulic lifting device described as follows.

First, the present invention lift device is placed under the vehicle lifted by the vehicle lift or located in the dock. Lift device of the present invention can be easily moved because the wheel 70 is attached. Then, when the pedal 58 is stepped on with the foot, the protrusion 59 of the pedal presses the end of the piston rod 56, while the hydraulic pipe 52 connected to the oil tank T installed in the form surrounding the cylinder 42 main surface. The oil introduced into the oil discharge cylinder 54 through the piston 55 is pushed by the piston 55 to flow into the cylinder 42. At this time, the back flow of oil is prevented by the check valves V1 and V2. Once the foot is released from the pedal 58, the piston 55 is pushed backward by the spring of the spring S installed inside the cylinder 54, and oil is introduced into the cylinder 54 again to compress the next piston 55. Be prepared.

The oil flowing into the cylinder 42 pushes the piston 44 out, and as the piston rod 46 rises, the supporting plate 10 connected to the head is positioned under the part to be removed.

In this state, the guide plate 20 installed on the support plate 10 is adjusted to match the size of the part. In this case, the inner surface of the guide groove 22 may be concave and convex, and a projection which is supported by a spring may be installed on the side of the stopper 12 to prevent the shaking of the guide plate 20 (not shown). This effect can also be achieved through other conventional fastening members.

Then, when the left and right adjustment lever 38 is turned, the male screw B of the lever 38 moves forward along the female threads N1 and N2 formed on the inner surfaces of the movable portions 32 and the protrusions 33 and 35 of the fixing portion 34. Since the movable part 32 moves the hinge H1 to the left and right while retreating, the angle of the parts attached to the vehicle and the support plate 10 can be matched.

Next, the parts are separated from the vehicle and placed on the support plate. When the pressure reducing valve 64 is released, oil is returned to the oil tank T through the hydraulic pipe 62. Thus, the piston 44 is inserted into the cylinder 42 to support the plate. (10) falls. Even when the support plate 10 is inclined, the anti-slip jaw 24 may prevent the user from injuring the parts due to falling. Thereafter, the parts are repaired by moving on or under the support plate 10.

When the parts are attached to the vehicle again, the elevator is moved under the vehicle to step on the pedal 58 to lift the support plate 10 and adjust the angle with the left and right adjustment lever 38 to attach the parts to the vehicle. The support plate 10 may be lowered by turning the pressure reducing valve 64.

As described above, while the conventional lifting device is a device for lifting and lowering the vehicle itself, the lifting device of the present invention has the effect of facilitating the lifting, lowering and moving of the parts when the vehicle parts are attached and detached. And by adjusting the guide plate installed on the support plate has the effect of adjusting the width to fit the size of the part. In addition, the parts can be adjusted by turning the control lever according to the angle of installation or installation in the vehicle.

It can reduce the consumption and increase the precision.

Claims (3)

In the hydraulic lifting device for vehicle maintenance comprising a support plate, a lifting unit composed of a cylinder and a piston rod, an oil tank, a hydraulic supply unit for supplying oil from the oil tank to the cylinder, and a pressure reducing unit for lowering the piston rod, The support plate (10) is formed with a non-slip jaw (24) protruding from the upper surface of each corner portion, the connection portion 30 is formed orthogonal / connected to the piston rod 46 head at the bottom center of gravity; A handle 48 is attached to the stop side of the cylinder 42, and a wheel support shaft 72 on which a moving wheel 70 is installed is fixed to the bottom surface of the cylinder 42; The oil tank (T) is formed to surround the outer peripheral surface of the cylinder (42); The hydraulic pressure supply unit 50 communicates with the hydraulic pipe 52 connected to the lower surface of the cylinder 42, the hydraulic pipe 52 and the check valve V1 interposed therebetween, and the oil tank T and the check valve V2. ), The oil discharge cylinder 54 communicating with the hydraulic pipe 52 with the relief valve 53 interposed therebetween and including the spring S on the inner circumferential surface thereof, and the rod of the piston 55 contacting the spring S ( 56) a pedal 58 formed with a projection 59 for pressing the end with the hinge H2 as an axis; The pressure reduction unit 60 is a cylinder 42 side and an oil tank T, in which a pressure reducing valve 64 for opening and closing the hydraulic pipe 62 connected to the cylinder 42 stops, and a check valve V3 are sequentially installed. Lifting device for mounting and detaching vehicle parts, characterized in that consisting of a hydraulic pipe (62) for connecting. The method of claim 1, A stop protrusion 12 is formed at each corner upper surface of the support plate 10, and the anti-slip jaw 24 is combined with the stop protrusion 12 so as to be obtained by the support plate 10. A lifting device for attaching and detaching a vehicle part, characterized in that 22) is formed at the upper end of the guide plate 24 formed through the center. The method according to claim 1 or 2, The connecting portion 30 of the supporting plate 10 and the piston rod 46 head is connected to the movable portion 32 installed on the lower surface of the supporting plate 10 by a hinge H1 to allow left and right reciprocation with the lower portion of the movable portion 32. A male screw B inserted into the fixing part 34 installed on the head of the piston rod 46 and the female threads N1 and N2 formed through the inside of the movable parts 32 and the side protrusions 33 and 35 of the fixing part 34. Lifting device for vehicle parts detachment, characterized in that is connected to the left and right reciprocating through the rotation of the left and right adjustment lever (38) formed at one end.