Pneumatic hydraulic jack with drawbar tank

Abstract

The utility model discloses a kind of pneumatic hydraulic jack with pull rod type oil tank, it is related to jack technical field, including vehicle body, oil tank, air valve and switch, vehicle body includes base and wheel, and hydraulic cylinder, valve body and oil pump are provided on base;Vent hole, oil filler and oil outlet are provided on oil tank, axle holder is fixedly arranged on base, axle is fixedly arranged on axle holder, and wheel is rotatably arranged at the both ends of axle;Oil tank oil tank includes long barrel shape oil loading barrel and set first pipe fitting, first pipe fitting is rotatably connected on axle by being set first shaft hole on the lateral wall, and gripping portion is provided at the top of oil tank, further including locking mechanism for locking and unlocking the rotation of oil tank, locking mechanism includes several first insertion slot, second insertion slot, insertion pin, brake handle, brake cable and rebound mechanism, and oil tank forms push-pull piece for pushing and pulling vehicle body. It is lighter in weight and smaller in size, convenient for the whole jack to be towed, and convenient for the angle of oil tank to be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic hydraulic jack technology, specifically to a pneumatic hydraulic jack with a lever-type oil tank. Background Technology

[0002] A pneumatic hydraulic jack is a small lifting device that uses a valve body to draw oil from the tank and then pressurizes the oil into the cylinder. Under equal pressure, the large area of ​​the cylinder body generates a large lifting force, thereby lifting the heavy object.

[0003] Pneumatic hydraulic jacks are used in scenarios such as car repair. They are available in various tonnages, such as 80 tons, 100 tons, and 120 tons. Since they need to be moved during use, the trend of continuous improvement and development of pneumatic hydraulic jacks is to make them lighter and reduce the amount of consumables.

[0004] During a long period of research and development, the inventor developed a pneumatic-hydraulic jack that was smaller in size and weight, and applied for an invention patent. The patent authorization announcement number is CN105271042B, and the title is "A Pneumatic-hydraulic Jack". However, the weight and size of this pneumatic-hydraulic jack are still relatively large, and there is still room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a pneumatic hydraulic jack with a lever-type oil tank, which is lighter in weight and smaller in size, and even if the oil tank is heavy, it is still easy to drag the jack as a whole, and the angle of the oil tank can be easily adjusted.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pneumatic-hydraulic jack with a lever-type oil tank includes a body, an oil tank, an air valve, and a switch. The body includes a base and wheels. 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 via an air circuit. The oil tank, the hydraulic cylinder, the valve body, and the oil pump are connected via an oil circuit. The oil tank has a vent, an oil inlet, and an oil outlet.

[0008] A wheel axle frame is fixedly mounted on the base, and a wheel axle is fixedly mounted on the wheel axle frame. Wheels are rotatably mounted on both ends of the wheel axle. The oil tank includes a long cylindrical oil cylinder and a first pipe fitting disposed at the bottom of the oil cylinder. A first shaft hole is provided on the side wall of the first pipe fitting and is rotatably connected to the wheel axle through the first shaft hole. A gripping part is provided on the top of the oil tank.

[0009] It also includes a locking mechanism for locking and unlocking the rotation of the fuel tank. The locking mechanism includes a plurality of first insertion slots spaced apart on the vehicle body along the circumferential direction of the rotation of the fuel tank, a second insertion slot on the bottom side wall of the fuel cylinder, and a pin for inserting and connecting the second insertion slot and the first insertion slot, a brake handle on the top of the fuel tank, brake cables connected to the brake handle and the pin respectively, and a spring mechanism for resetting the pin to a state of insertion with the first insertion slot and the second insertion slot.

[0010] The fuel tank forms a push-pull component that pushes and pulls the vehicle body.

[0011] Optionally, the rebound mechanism includes: a perforated blocking member disposed on the side wall of the oil tank above the second insertion slot for the brake cable to pass through, and a spring sleeved on the outer periphery of the brake cable between the perforated blocking member and the insertion pin.

[0012] Optionally, the grip is a first handle located on the top of the side wall of the fuel tank, and the brake lever is located on the first handle.

[0013] Optionally, the oil tank further includes a first housing disposed on top of the oil cylinder, the air valve being disposed above the first housing, the top wall of the first housing having a first through hole through which an air pipe connected to the air valve passes, and the side wall of the first housing having a second through hole through which an air supply pipe and the brake line pass.

[0014] Optionally, a first housing is provided at the head of the base, the valve body and the oil pump are disposed in the first housing, and the wheel axle frame is fixedly connected to the front side wall of the first housing.

[0015] Optionally, the wheel axle frame includes two vertical plates welded to the front side wall of the first housing and spaced apart, wherein at least one vertical plate is provided with a top plate, the top plate is bent along the circumferential direction of the rotation of the oil tank, and the top plate is provided with a plurality of first insertion slots spaced apart; the first pipe is located between the two vertical plates.

[0016] Optionally, a certain position in the middle region of the top plate along the axial direction is fixedly connected to the top of the vertical plate, and a notch is provided at the top of the vertical plate at a position corresponding to the first insertion groove, and the insertion pin passes through the first insertion groove and is inserted into the notch.

[0017] Optionally, the oil tank includes an oil filling cylinder, which includes a first cylinder section and a second cylinder section, wherein the first cylinder section is located below the second cylinder section and the cross-sectional area of ​​the first cylinder section is larger than that of the second cylinder section.

[0018] Optionally, a second pipe fitting is provided at the bottom side wall of the oil cylinder, and the inner side wall of the second pipe fitting forms the second insertion groove.

[0019] This invention has two main improvements. First, it improves the shape and placement of the fuel tank by making it a long cylindrical shape and rotatably connected to the axle. A locking mechanism is also included to lock the tank, allowing it to function as both a fuel container and a push-pull lever for the vehicle. Workers can use the grips on the tank to push and pull the vehicle, eliminating the need for a separate lever and reducing the vehicle's overall size. Second, directly rotatably connecting the fuel tank to the axle facilitates towing the vehicle without requiring an additional axle structure. The locking mechanism, using a brake handle, brake cable, connector slot, and connector pin, allows for precise angle positioning of the fuel tank and is more robust and durable. Attached Figure Description

[0020] Figure 1 This is a schematic perspective view of a pneumatic-hydraulic jack with a lever-type oil tank.

[0021] Figure 2 A schematic diagram of another perspective view of a pneumatic-hydraulic jack with a lever-type oil tank;

[0022] Figure 3 for Figure 2 A schematic diagram of a magnified view of a portion of point A in the middle;

[0023] Figure 4 A schematic diagram of a perspective view of a pneumatic-hydraulic jack with a lever-type oil tank after the first housing is concealed;

[0024] Figure 5 This is a schematic diagram of an exploded view of a pneumatic-hydraulic jack with a lever-type oil tank.

[0025] Figure 6 for Figure 5 A schematic diagram of a magnified view of a portion at point B in the middle;

[0026] Figure 7 for Figure 5 A schematic diagram of a magnified view of a portion at point C in the middle;

[0027] Figure 8 This is a schematic diagram of another type of oil cylinder.

[0028] In the diagram, 1. Vehicle body; 11. Base; 12. Wheel; 13. First housing; 14. Axle bracket; 141. Vertical plate; 142. Top plate; 15. Axle; 2. Oil tank; 21. Oil cylinder; 211. Vent hole; 212. Oil inlet; 213. Oil outlet; 214. First cylinder section; 215. Second cylinder section; 216. Second pipe fitting; 22. First housing; 221. First through hole; 2 22. Second through hole; 23. First pipe fitting; 231. First shaft hole; 24. Grip part; 25. Locking mechanism; 251. First insertion slot; 252. Second insertion slot; 253. Insertion pin; 254. Brake handle; 255. Brake cable; 256. Rebound mechanism; 2561. Perforated blocking part; 2562. Spring; 3. Hydraulic cylinder; 4. Valve body; 5. Oil pump; 6. Air valve; 7. Switch. Detailed Implementation

[0029] Hereinafter, embodiments will be described with reference to the accompanying drawings.

[0030] See Figure 1-8 This utility model provides a pneumatic hydraulic jack with a lever-type oil tank, including a body 1, an oil tank 2, an air valve 6, and a switch 7. The body 1 includes a base 11 and wheels 12. A hydraulic cylinder 3, a valve body 4, and an oil pump 5 are mounted on the base 11. The air valve 6 is used to connect to an air source. The air valve 6, oil tank 2, hydraulic cylinder 3, valve body 4, and oil pump 5 are connected through an air circuit, and the oil tank 2, hydraulic cylinder 3, valve body 4, and oil pump 5 are connected through an oil circuit. The oil tank 2 is provided with a vent 211, an oil inlet 212, and an oil outlet 213. A wheel axle frame 14 is fixedly mounted on the base 11, and a wheel axle 15 is fixedly mounted on the wheel axle frame 14. Wheels 12 are rotatably mounted at both ends of the wheel axle 15. See also Figure 2 , Figure 5 and Figure 7 The fuel tank 2 may include a fuel cylinder 21 and a first pipe 23 fixedly connected to the bottom of the fuel cylinder. A first shaft hole 231 is provided on the side wall of the first pipe 23, through which the axle 15 passes and forms a rotatable connection. The first pipe 23 may be welded to the bottom of the fuel cylinder 21. It also includes a locking mechanism 25 for locking and unlocking the rotation of the fuel tank, and a gripping part 24 is provided on the top of the fuel tank 2, forming a push-pull member for pushing and pulling the vehicle body 1. See also... Figure 2 , Figure 3 , Figure 5 and Figure 7The locking mechanism 25 includes a plurality of first insertion slots 251 spaced apart along the circumference of the fuel tank 2 on the vehicle body 1, a second insertion slot 252 located on the bottom side wall of the fuel tank 2, and a pin 253 for connecting the second insertion slot 252 and the first insertion slot 251. The locking mechanism 25 also includes a brake handle 254 located on the top of the fuel tank 2, brake cables 255 connected to the brake handle 254 and the pin 253 respectively, and a spring mechanism 256 for resetting the pin 253 to a state of engagement with the first insertion slot 251 and the second insertion slot 252.

[0031] Specifically, a second pipe fitting 216 is welded to the bottom side wall of the oil tank 21, and the inner side wall of the second pipe fitting 216 forms a second insertion groove 252. When the insertion pin 253 passes through the first insertion groove 251 and the second insertion groove 252 simultaneously, the locking mechanism 25 locks, and the oil tank 2 cannot rotate relative to the vehicle body 1. When the insertion pin 253 is pulled upward and disengaged from the first insertion groove 251, the locking mechanism 25 unlocks, and the oil tank 2 can rotate relative to the vehicle body 1, thereby allowing adjustment of the tilt angle of the oil tank 2. When the brake handle 254 is pressed, the brake handle 254 moves the brake cable 255, which pulls the insertion pin 253 until the insertion pin 253 disengages from the first insertion groove 251. During its movement, the insertion pin 253 overcomes the rebound force of the rebound mechanism 256, which stores energy. After the pin 253 disengages from the first insertion slot 251, the fuel tank 2 can rotate relative to the vehicle body 1. At this time, the fuel tank 2 can be adjusted to a suitable tilt angle. When the brake lever 254 is released, under the action of the rebound force of the rebound mechanism 256, the pin 253 moves back along the second insertion slot 252 and inserts into the first insertion slot 251, locking the fuel tank 2 to the vehicle body 1. In this way, the user can more conveniently lock and unlock the fuel tank 2.

[0032] Among them, the brake lever 254 and the brake cable 255 can adopt the brake lever and brake cable structure of electric vehicles or bicycles. The brake cable can include an outer sheath and an inner core; the brake cable can also exclude the outer sheath and only include the inner core. In this case, it is only necessary to set some guides on the side wall of the oil tank 2 to guide the inner core.

[0033] This pneumatic-hydraulic jack, since only the oil tank has been improved without changing the working principle, is similar to or the same as existing pneumatic-hydraulic jacks. A brief description is provided: Air valve 6 is connected to an air source. Switch 7 controls air valve 6, thereby controlling the raising, lowering, and stopping of hydraulic cylinder 3. When air valve 6 is controlled via switch 7, connecting oil pump 5 to the air source, oil pump 5, driven by the air source, draws oil from oil tank 2 through valve body 4 and forces it into hydraulic cylinder 3, causing hydraulic cylinder 3 to rise. Controlling air valve 6 via switch 7 connects the vent hole on hydraulic cylinder 3 to the air source, causing each cylinder within the outermost cylinder body to descend rapidly under air pressure. Switch 7 can also control air valve 6 to keep hydraulic cylinder 3 stationary.

[0034] Firstly, this utility model improves the shape and location of the fuel tank by making it a long cylindrical shape and rotatably connecting it to the wheel axle. It also includes a locking mechanism to lock the fuel tank, so that while the fuel tank serves as a container for fuel, it can also act as a push-pull rod for pushing and pulling the vehicle body. Workers can use their hands to grab the grips on the fuel tank to push and pull the vehicle body, thereby reducing the size of the vehicle body and eliminating the weight of the pull rod. Secondly, the fuel tank is directly rotatably connected to the axle, facilitating towing of the vehicle body without requiring an additional axle structure, simplifying the structure and saving materials. The locking mechanism uses a brake handle, brake cable, connector slot, and connector pin. When adjusting the tilt angle of the fuel tank, since the brake handle is located on top of the fuel tank, simply support the top of the fuel tank, press the brake handle to unlock the locking mechanism, rotate the fuel tank, and then release the brake handle to lock the mechanism. The adjustment is quite convenient. The rotatable connection between the fuel tank and the axle, as well as the locking mechanism, have a more reasonable and robust structure and a longer service life.

[0035] Optionally, see Figure 3 The rebound mechanism 256 includes: a perforated blocking member 2561 disposed on the side wall of the oil tank 2 above the second insertion slot 252 for the brake cable 255 to pass through, and a spring 2562 located between the perforated blocking member 2561 and the insertion pin 253 and sleeved on the outer periphery of the brake cable 255. The perforated blocking member 2561 may include a perforated plate welded to the side wall of the oil cylinder 21, with a cylindrical member screwed onto the perforated plate, or the cylindrical member being fixed to the perforated plate by bolts.

[0036] Figure 3The diagram shows a brake cable 255 comprising an outer sheath and an inner core. The inner core of the brake cable 255 passes through a perforated stopper 2561 and is connected to a pin 253. A spring 2562 is sleeved around the outer periphery of the inner core of the brake cable 255 and is located between the perforated stopper 2561 and the pin 253. When the pin 253 is pulled upward by the brake cable 255, it compresses the spring 2562 upward. The compressed spring 2562 is blocked and compressed by the perforated stopper 2561. When the pulling force of the brake cable 255 disappears, the compressed spring 2562 returns to its original state, pushing the pin 253 downward. The pin 253 moves back along the second insertion groove 252 and inserts into the first insertion groove 251.

[0037] Optionally, the grip 24 is a first handle located on the top of the side wall of the oil tank 2, and the brake lever 254 is located on the first handle.

[0038] See Figure 1 The first handle is located on the top of the side wall of the oil tank 2 and extends radially along the oil tank 2. The brake handle 254 is located on the first handle and can be pressed using the first handle.

[0039] Optionally, see Figure 2 , Figure 5 and Figure 6 The oil tank 2 includes an oil cylinder 21. A first housing 22 is fixedly connected to the top of the oil cylinder 21. An air valve 6 is provided above the first housing 22. A first through hole 221 is provided on the top wall of the first housing 22 for the air pipe connected to the air valve 6 to pass through. A second through hole 222 is provided on the side wall of the first housing 22 for the air supply pipe and the brake line 255 to pass through.

[0040] In this way, the gas connector connected to the gas valve 6 can be placed inside the first housing 22, reducing the contamination of the gas connector.

[0041] Optionally, Figure 2 , Figure 3 and Figure 4 A first housing 13 is provided at the head of the base 11, and the hydraulic cylinder 3 is located at the tail of the base 11. The valve body 4 and the oil pump 5 are located inside the first housing 13, and a wheel axle bracket 14 is fixedly connected to the front side wall of the first housing 13.

[0042] Optionally, see Figure 2 and Figure 3The wheel axle frame 14 includes two vertical plates 141 welded to the front side wall of the first housing 13 and spaced apart. At least one vertical plate 141 is provided with a top plate 142. The top plate 142 is bent along the circumferential direction of the rotation of the oil tank 2. A plurality of first insertion slots 251 are provided on the top plate 142 at intervals. The first pipe 23 is located between the two vertical plates 141. The two vertical plates 141 can axially limit the first pipe 23. Of course, additional limiting structures such as snap rings can be provided on the wheel axle 15 to axially limit the first pipe 23.

[0043] Optionally, see Figure 3 The top plate 142 is fixedly connected to the top of the vertical plate 141 at a certain position in the middle region along the axial direction of the wheel axle 15. That is, there is a middle region in the width direction of the top plate 142, the width of which is greater than or equal to the width of the vertical plate 141. The top of the vertical plate 141 can be connected to any position in the middle region, meaning that the left and right edges of the top plate 142 protrude from the left and right sidewalls of the vertical plate 141. A notch is provided at the top of the vertical plate 141 at a position corresponding to the first insertion groove 251, and the insertion pin 253 passes through the first insertion groove 251 and is inserted into the notch.

[0044] When towing with a jack, the oil tank needs to be pressed down at an angle to lift the rear of the vehicle. During this process, the connector, top plate, and vertical plate are the load-bearing components. With this structure, the vertical plate can withstand the pressure, resulting in a higher load-bearing capacity and a more robust structure.

[0045] Optionally, see Figure 8 The fuel tank 2 includes a fuel filling cylinder 21, which includes a first cylinder section 214 and a second cylinder section 215. The first cylinder section 214 is located below the second cylinder section 215, and the cross-sectional area of ​​the first cylinder section 214 is larger than that of the second cylinder section 215. In this way, the fuel capacity of the fuel tank 2 can be increased.

[0046] The above embodiments are merely illustrative of the present invention and not limiting. Under the concept of the present invention, technical solutions without substantial changes are still within the protection scope of the present invention.

Claims

1. A pneumatic hydraulic jack with a lever-type oil tank, comprising a body, an oil tank, an air valve, and a switch, wherein the body includes a base and wheels, 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 via an air circuit, and the oil tank, the hydraulic cylinder, the valve body, and the oil pump are connected via an oil circuit; the oil tank is provided with a vent, an oil inlet, and an oil outlet, characterized in that: A wheel axle frame is fixedly mounted on the base, and a wheel axle is fixedly mounted on the wheel axle frame. Wheels are rotatably mounted on both ends of the wheel axle. The oil tank includes a long cylindrical oil cylinder and a first pipe fitting disposed at the bottom of the oil cylinder. A first shaft hole is provided on the side wall of the first pipe fitting and is rotatably connected to the wheel axle through the first shaft hole. A gripping part is provided on the top of the oil tank. It also includes a locking mechanism for locking and unlocking the rotation of the fuel tank. The locking mechanism includes a plurality of first insertion slots spaced apart on the vehicle body along the circumferential direction of the rotation of the fuel tank, a second insertion slot on the bottom side wall of the fuel cylinder, and a pin for inserting and connecting the second insertion slot and the first insertion slot, a brake handle on the top of the fuel tank, brake cables connected to the brake handle and the pin respectively, and a spring mechanism for resetting the pin to a state of insertion with the first insertion slot and the second insertion slot. The fuel tank forms a push-pull component that pushes and pulls the vehicle body.

2. The pneumatic-hydraulic jack with a lever-type oil tank as described in claim 1, characterized in that, The rebound mechanism includes: a perforated blocking member disposed on the side wall of the oil tank above the second plug slot for the brake cable to pass through, and a spring sleeved on the outer periphery of the brake cable between the perforated blocking member and the plug pin.

3. The pneumatic-hydraulic jack with a lever-type oil tank as described in claim 1, characterized in that, The grip is a first handle located on the top of the side wall of the fuel tank, and the brake lever is located on the first handle.

4. The pneumatic-hydraulic jack with a lever-type oil tank as described in claim 1, characterized in that, The oil tank also includes a first housing disposed on top of the oil cylinder, the air valve being disposed above the first housing, the top wall of the first housing having a first through hole through which an air pipe connected to the air valve passes, and the side wall of the first housing having a second through hole through which an air supply pipe and the brake line pass.

5. The pneumatic-hydraulic jack with a lever-type oil tank as described in claim 1, characterized in that, The base has a first housing at its head, the valve body and the oil pump are housed in the first housing, and the wheel axle frame is fixedly connected to the front side wall of the first housing.

6. The pneumatic-hydraulic jack with a lever-type oil tank as described in claim 5, characterized in that, The wheel axle frame includes two vertical plates welded to the front side wall of the first housing and spaced apart. At least one of the vertical plates is provided with a top plate. The top plate is bent along the circumferential direction of the rotation of the oil tank. The top plate is provided with a plurality of first insertion slots spaced apart. The first pipe is located between the two vertical plates.

7. The pneumatic-hydraulic jack with a lever-type oil tank as described in claim 6, characterized in that, 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.

8. The pneumatic-hydraulic jack with a lever-type oil tank as described in claim 1, characterized in that, The oil filling cylinder includes a first cylinder section and a second cylinder section, wherein the first cylinder section is located below the second cylinder section and the cross-sectional area of ​​the first cylinder section is greater than that of the second cylinder section.

9. The pneumatic-hydraulic jack with a lever-type oil tank as described in claim 1, characterized in that, A second pipe fitting is provided at the bottom side wall of the oil cylinder, and the inner side wall of the second pipe fitting forms the second insertion groove.

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