气动液压千斤顶

Abstract

本实用新型公开了一种气动液压千斤顶，涉及千斤顶技术领域。包括车体、油箱、气阀和开关，车体包括底座和车轮，底座上设有液压缸、阀体和油泵，最外层缸体包括由无缝钢管制成的筒身和封盖，筒身的底部焊接在平面部上，筒身的顶部设有第一开口，封盖的内侧壁围成第一通孔，次外层缸体的外侧壁上设置有第一凸起，次外层缸体可以从第一通孔穿出但第一凸起被封盖阻挡，次外层缸体可以从第一开口脱出；封盖上设有拆装部；底座上设有轮轴架，轮轴架上设有轮轴，轮轴的两端转动设置有车轮；油箱为长筒形，油箱底部转动连接在轮轴上，油箱顶部设置有握持部；还包括锁止机构，油箱形成对车体进行推拉的推拉件。其重量较轻、体积较小且耗材较少。

Claims

1. A pneumatic-hydraulic jack, comprising a body, an oil tank, an air valve, and a switch, wherein the body includes a base and wheels, and a hydraulic cylinder, a valve body, and an oil pump are mounted on the base; the air valve is connected to an air source; the air valve, the oil tank, the hydraulic cylinder, the valve body, and the oil pump are connected to an air circuit; and the oil tank, the hydraulic cylinder, the valve body, and the oil pump are connected to an oil circuit; the hydraulic cylinder comprises N nested cylinder bodies, where N is an integer greater than or equal to 2, characterized in that: The outermost cylinder body in the N-stage cylinder body includes a cylindrical body and a cap made of seamless steel pipe. The base includes a flat portion, the bottom of the cylindrical body is welded to the flat portion, the top of the cylindrical body is provided with a first opening, the first opening is provided with a first internal thread, the outer side wall of the cap is provided with a first external thread, both the first internal thread and the first external thread are sawtooth threads, the inner side wall of the cap forms a first through hole, the outer side wall of the next outermost cylinder body in the N-stage cylinder body is provided with a first protrusion, when the cap is screwed into the first opening, the next outermost cylinder body can pass through the first through hole but the first protrusion is blocked by the cap, when the cap is removed, the next outermost cylinder body can be dislodged from the first opening; the cap is also provided with a disassembly and assembly part for disassembling and assembling the cap; A wheel axle frame is fixedly mounted on the base, and a wheel axle is fixedly mounted on the wheel axle frame. The wheels are rotatably mounted on both ends of the wheel axle. The fuel tank is cylindrical, and the bottom of the fuel tank is rotatably connected to the wheel axle. A gripping part is provided on the top of the fuel tank. The fuel tank also includes a locking mechanism for locking and unlocking the rotation of the fuel tank, and the fuel tank forms a push-pull component for pushing and pulling the vehicle body.

2. The pneumatic hydraulic jack of claim 1, wherein, The lower end of the cylinder is provided with an inclined surface. The inclined surface slopes downward and inward from the outer wall of the cylinder. The lower end face of the cylinder contacts the flat part and the cylinder is welded to the base through the inclined surface. The weld material formed after welding accumulates at the inclined surface to form an annular ridge protruding from the outer wall of the cylinder.

3. The pneumatic hydraulic jack of claim 1, wherein, The cap includes a cylindrical vertical sealing portion and a transverse sealing portion extending laterally outward from the top of the vertical sealing portion. When the cap is installed at the first opening, the transverse sealing portion covers the top of the cylinder body. The disassembly / removal part is disposed on the transverse sealing portion. The wall thickness of the cylinder body at the first opening is 0.5 to 0.8 times the wall thickness of the cylinder body below the first opening. The sum of the wall thickness of the vertical sealing portion and the wall thickness of the cylinder body at the first opening is 1.1 to 1.5 times the wall thickness of the cylinder body below the first opening.

4. The pneumatic hydraulic jack of claim 1, wherein, The wall thickness of the cylinder at the first opening is 7-8 mm, and the wall thickness of the cylinder below the first opening is 14-16 mm.

5. The pneumatic hydraulic jack of claim 1, wherein, The locking mechanism includes a plurality of first insertion slots spaced apart on the vehicle body in a circumferential direction along which the fuel tank rotates, a second insertion slot located on the bottom side wall of the fuel tank, an insertion pin for inserting and connecting the second insertion slot and the first insertion slot, a brake handle located on the top of the fuel tank, brake cables connected to the brake handle and the insertion pin respectively, and a spring mechanism for resetting the insertion pin to a state of insertion with the first insertion slot and the second insertion slot.

6. The pneumatic hydraulic jack of claim 5, wherein, The oil tank includes an oil cylinder and a first housing disposed on top of the oil cylinder. The air valve is disposed above the first housing. The top wall of the first housing is provided with a first through hole for an air pipe connected to the air valve to pass through. The side wall of the first housing is provided with a second through hole for the air supply pipe and the brake line to pass through.

7. The pneumatic-hydraulic jack as described in claim 6, characterized in that, The grip portion consists of two first handles extending laterally on the side wall of the first housing, and the brake lever is disposed on the first handle.

8. The pneumatic hydraulic jack of claim 5, wherein, A first housing is provided at the head of the base, and the valve body and the oil pump are disposed in the first housing. The wheel axle frame is fixedly connected to the front side wall of the first housing. The wheel axle frame includes two vertical plates disposed at intervals on the front side wall of the first housing, wherein at least one vertical plate is provided with a top plate. The top plate is bent along the circumferential direction of the oil tank's rotation, and the top plate is provided with the first insertion groove at intervals. The oil tank includes an oil cylinder and a first pipe disposed at the bottom of the oil cylinder. The side wall of the first pipe is provided with a first shaft hole and is rotatably connected to the wheel axle through the first shaft hole. The first pipe is located between the two vertical plates.

9. The pneumatic hydraulic jack of claim 8, wherein, The top plate is fixedly connected to the top of the vertical plate at a certain position in the middle region along the axial direction. A notch is provided at the top of the vertical plate at a position corresponding to the first insertion slot. The insertion pin passes through the first insertion slot and is inserted into the notch.

10. The pneumatic hydraulic jack of claim 8, wherein, The base is flat, and the lowest point of the wheel is higher than the bottom surface of the base.

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