Oil cylinder pedal lifting device

Abstract

The invention discloses an oil cylinder pedal lifting device, and relates to the technical field of automobile manufacturing and maintenance tools.The oil cylinder pedal lifting device comprises a valve block, a hydraulic oil cylinder mechanism is arranged on one side of the top of a plunger type cylinder mechanism, a pressure relief assembly is arranged in the middle of the side, away from the hydraulic oil cylinder mechanism, of the top of the valve block, and a universal joint is arranged at the top of the pressure relief assembly; and a pressure relief rod is arranged at the top of the universal joint. The oil cylinder pedal lifting device has the advantages that the oil cylinder pedal lifting device adopts a hydraulic driving mode, has excellent jacking capacity and can provide sufficient and stable lifting force, the jacking force of the oil cylinder pedal lifting device can be flexibly adjusted within the lifting stroke range of the oil cylinder pedal lifting device, and due to the characteristic, the oil cylinder pedal lifting device can highly meet the assembly requirements of different vehicle types of customers. The assembly of diversified vehicle models is met through a single tool, the resource waste in multiple aspects such as materials, manpower, time and sites caused by manufacturing multiple sets of tools for different vehicle models by a customer is effectively avoided, and the production efficiency and the cost effectiveness are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile manufacturing and repairing tooling, and particularly relates to a pedal lifting device for an oil cylinder. BACKGROUND

[0002] The pedal lifting device is a hydraulic power conversion device for driving the piston to move through a pedal device, and is composed of a hydraulic cylinder, a plunger cylinder, a return spring, a valve block, an inlet and outlet one-way valve, a pressure relief rod, a pressure relief fixed frame, a pedal plate assembly and the like. The pedal lifting device plays an important role in the assembly of automobile hubs.

[0003] In the current configuration system of the hub lifting tooling, the lifting device is mostly driven by a small hydraulic system. However, this mode of driving the oil cylinder by the hydraulic system has significant drawbacks. Since the product itself has a large size, the actual working conditions of the limited space on site and the space reserved for the lifting tooling are difficult to realize effective installation, which greatly limits its applicability and flexibility.

[0004] From another choice of the driving system, the electric driving system is a feasible solution, but also has a series of problems. The electric driving system involves complex wiring operation and precise control requirements, which undoubtedly greatly improves the overall complexity of the lifting tooling. In the actual operation link, not only the pump body needs to be started manually, but also the opening and closing of the valve needs to be controlled by pressing the button. More importantly, when the position of the hub lifting tooling is adjusted on site, the operation needs to be coordinated by two hands. It is impossible for a single assembler to complete the operation independently. An additional assembler is often needed to assist. This mode of personnel configuration not only causes waste of human resources, but also leads to a significant increase in labor costs, thereby increasing the overall operating cost. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a pedal lifting device for an oil cylinder, which solves the problems raised in the background art.

[0006] In order to achieve the above purpose, the present application adopts the following technical solutions: The invention discloses a kind of oil cylinder foot pedal lifting device, including valve block, the top side of the plunger cylinder mechanism is equipped with hydraulic oil cylinder mechanism, the middle position of the side of the valve block top away from hydraulic oil cylinder mechanism is equipped with pressure relief assembly, the top of the pressure relief assembly is equipped with universal joint, the top of the universal joint is equipped with pressure relief rod, the outer wall of the hydraulic oil cylinder mechanism top and the outer wall middle section of pressure relief rod are equipped with pressure relief rod fixing frame, the side of the valve block top between hydraulic oil cylinder mechanism and pressure relief assembly is equipped with plunger cylinder mechanism, the outer wall of the plunger cylinder mechanism is equipped with surrounding reset spring, the side of the valve block top between hydraulic oil cylinder mechanism and pressure relief assembly away from plunger cylinder mechanism is equipped with foot pedal mechanism, the side of the valve block outer wall near the one end of hydraulic oil cylinder mechanism is equipped with first plug-in check valve, the other end of the valve block outer wall near the one end of hydraulic oil cylinder mechanism is equipped with second plug-in check valve.

[0007] Further, the plunger cylinder mechanism and reset spring are located below the foot pedal mechanism, and the plunger cylinder mechanism, reset spring and foot pedal mechanism are located below the pressure relief rod fixing frame.

[0008] Further, the hydraulic oil cylinder mechanism includes an outer cylinder, the inner wall of the outer cylinder is equipped with an inner cylinder, the outer cylinder and the inner cylinder are equipped with an oil tank, the inner cylinder is equipped with an oil cylinder, and the top of the inner cylinder is equipped with a hydraulic oil cylinder rod.

[0009] Further, the plunger cylinder mechanism includes a plunger cylinder shell, the plunger cylinder shell is equipped with a cylinder plug, the top of the cylinder plug is equipped with a connecting column, the outer wall of the connecting column is equipped with an abutting disc, and the top of the connecting column is equipped with a limiting bolt.

[0010] Further, the cylinder plug and connecting column are located in the plunger cylinder shell, and the connecting column extends out of the plunger cylinder shell, the limiting bolt is located above the connecting column and limits the connecting column, and the reset spring abuts against the bottom of the abutting disc.

[0011] Further, the foot pedal mechanism includes a base, the top of the base is equipped with a fixing screw at each corner, the top of the base is equipped with a support rod away from the connecting column, the top of the support rod away from the connecting column is equipped with a limiting protrusion, the top of the limiting protrusion is equipped with an abutting rod, the inner wall of the middle section of the abutting rod is equipped with an abutting wheel, and the end of the abutting rod away from the limiting protrusion is equipped with a foot pedal rod.

[0012] Further, the limiting protrusion limits the abutting rod, the support rod and the abutting rod are connected by a rotating shaft, the abutting wheel and the abutting rod are connected by a rotating shaft, and the abutting wheel abuts against the top of the connecting column.

[0013] Compared with existing technologies, the advantages of this invention are: 1. The hydraulically driven foot-operated lifting device boasts excellent lifting capacity, providing ample and stable lifting force. This lifting force is flexibly adjustable within its lifting stroke range, making it highly adaptable to the assembly needs of different vehicle models. By using a single tooling fixture to meet the assembly requirements of diverse vehicle models, it effectively avoids the waste of resources such as materials, manpower, time, and space caused by creating multiple sets of tooling for different models, significantly improving production efficiency and cost-effectiveness.

[0014] 2. The hydraulic cylinder foot-operated lifting device supports customized design and production to meet individual needs. Its hydraulic cylinder adopts an innovative double-layer structure design. The inner layer is the part of the cylinder that actually performs the lifting function, while the outer layer cleverly constructs an oil storage space, which acts as a dedicated oil tank for the hydraulic cylinder and is integrated with the cylinder. This integrated design greatly reduces the overall size of the product, achieves efficient hydraulic function in a limited space, and ensures that the output force can accurately meet the actual requirements of customers, providing customers with a more compact, practical and efficient solution. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the reset spring structure of the present invention; Figure 3 This is a schematic diagram of the piston cylinder outer shell structure of the present invention; Figure 4 This is a schematic diagram of the foot pedal mechanism of the present invention; Figure 5 This is a schematic diagram of the plunger cylinder mechanism of the present invention; Figure 6 This is a side sectional view of the hydraulic cylinder mechanism of the present invention.

[0016] In the diagram: 1. Hydraulic cylinder mechanism; 101. Outer cylinder; 102. Inner cylinder; 103. Oil tank; 104. Cylinder; 105. Hydraulic cylinder rod; 2. Piston cylinder mechanism; 201. Piston cylinder housing; 202. Piston; 203. Abutment plate; 204. Connecting column; 205. Limit pin; 3. Return spring; 4. Valve block; 5. First cartridge check valve; 6. Second cartridge check valve; 7. Pressure relief assembly; 8. Universal joint; 9. Pressure relief rod; 10. Pressure relief rod fixing bracket; 11. Foot pedal mechanism; 1101. Base; 1102. Fixing screw; 1103. Support rod; 1104. Limiting protrusion; 1105. Abutment rod; 1106. Abutment wheel; 1107. Foot pedal; 1108. Foot pedal. Detailed Implementation

[0017] Example 1 Reference Figure 1 - Figure 6 A hydraulic cylinder foot-operated lifting device includes a valve block 4, a hydraulic cylinder mechanism 1 on one side of the top of a piston cylinder mechanism 2, a pressure relief assembly 7 at the middle position of the top of the valve block 4 away from the hydraulic cylinder mechanism 1, a universal joint 8 on the top of the pressure relief assembly 7, a pressure relief rod 9 on the top of the universal joint 8, a pressure relief rod fixing bracket 10 between the top of the outer wall of the hydraulic cylinder mechanism 1 and the middle section of the outer wall of the pressure relief rod 9, a piston cylinder mechanism 2 on the top of the valve block 4 located between the hydraulic cylinder mechanism 1 and the pressure relief assembly 7, a return spring 3 surrounding the outer wall of the piston cylinder mechanism 2, and a return spring 3 on the top of the valve block 4. A foot pedal mechanism 11 is located on the side away from the plunger cylinder mechanism 2 between the hydraulic cylinder mechanism 1 and the pressure relief assembly 7. A first cartridge check valve 5 is located on one end of the outer wall of the valve block 4 near the hydraulic cylinder mechanism 1. A second cartridge check valve 6 is located on the other end of the outer wall of the valve block 4 near the hydraulic cylinder mechanism 1 on the same side as the first cartridge check valve 5. The plunger cylinder mechanism 2 and the return spring 3 are both located below the foot pedal mechanism 11. The plunger cylinder mechanism 2, the return spring 3, and the foot pedal mechanism 11 are all located below the pressure relief rod fixing bracket 10. Its core structure is compact and its functions are clear. The plunger cylinder mechanism 2 is located in a key position of the device. A hydraulic cylinder mechanism 1 is installed on one side of its top. The two work together to achieve the lifting function. The valve block 4 is an important support and control component of the entire device. Its top layout is reasonable and orderly. A pressure relief component 7 is set in the middle of the side of the top of the valve block 4 away from the hydraulic cylinder mechanism 1. A universal joint 8 and a pressure relief rod 9 are connected in sequence on the top of the component to form a complete pressure relief system. In order to ensure the stability of the pressure relief rod 9, a pressure relief rod fixing bracket 10 is specially set between the top of the outer wall of the hydraulic cylinder mechanism 1 and the middle section of the outer wall of the pressure relief rod 9.

[0018] On the top of valve block 4, on one side between hydraulic cylinder mechanism 1 and pressure relief assembly 7, a plunger cylinder mechanism 2 is arranged again. To enhance the reset function of plunger cylinder mechanism 2, a reset spring 3 is arranged around its outer wall. On the other side of valve block 4, on the other side between hydraulic cylinder mechanism 1 and pressure relief assembly 7 and away from plunger cylinder mechanism 2, a foot pedal mechanism 11 is cleverly arranged, allowing the operator to control the raising and lowering of the device by foot pedal action. On one side of the outer wall of valve block 4, near hydraulic cylinder mechanism 1, a first cartridge check valve 5 and a second cartridge check valve 6 are respectively arranged. These two check valves are located on the same side, at the two ends near hydraulic cylinder mechanism 1, and play the role of controlling the flow of hydraulic oil. Plunger cylinder mechanism 2 and reset spring 3 are both located below foot pedal mechanism 11, and plunger cylinder mechanism 2, reset spring 3 and foot pedal mechanism 11 are all located below pressure relief rod fixing bracket 10, realizing the raising and lowering control and stable operation of the device. The overall structure is compact and the functions are complete.

[0019] Example 2 Hydraulic cylinder mechanism 1 includes an outer cylinder 101, an inner cylinder 102 disposed opposite each other on the inner wall of the outer cylinder 101, an oil tank 103 disposed opposite each other on the outer cylinder 101 and the inner cylinder 102, an oil cylinder 104 disposed inside the inner cylinder 102, and a hydraulic cylinder rod 105 passing through the top of the inner cylinder 102. Piston cylinder mechanism 2 includes a piston cylinder housing 201, a piston 202 disposed inside the piston cylinder housing 201, a connecting post 204 passing through the top of the piston 202, an abutment plate 203 disposed above the outer wall of the connecting post 204, and a limiting pin 205 passing through the top of the connecting post 204. The piston 202 and the connecting post 204 are both located inside the piston cylinder housing 201, and the connecting post 204 extends outside the piston cylinder housing 201. The limiting pin 205 is located on the connecting post. Above 204, the limiting pin 205 limits the connecting column 204, the return spring 3 abuts against the bottom of the abutment plate 203, the hydraulic cylinder mechanism 1 adopts a two-layer nested design, the outermost layer is the outer cylinder 101, and the inner cylinder 102 is carefully set between its inner walls. The annular space between the outer cylinder 101 and the inner cylinder 102 is cleverly utilized to set up an oil tank 103 for storing and supplying hydraulic oil. The inner cylinder 102 is further installed with a cylinder 104, forming a relatively independent and sealed hydraulic working chamber. At the top of the inner cylinder 102, the hydraulic cylinder rod 105 is set through, and the cylinder rod 105 can reciprocate linearly under the action of hydraulic oil, thereby realizing the transmission of force and the lifting action of the device.

[0020] The plunger cylinder mechanism 2 also features a unique design structure. Its main body is the plunger cylinder housing 201, which provides a stable installation space for the internal components. Inside the plunger cylinder housing 201, a cylinder plug 202 is provided, which can slide up and down within the plunger cylinder housing 201. A connecting post 204 is provided through the top of the cylinder piston 202. The connecting post 204 not only connects the cylinder piston 202 with external components, but also transmits motion and force to a certain extent. An abutment plate 203 is provided on the upper part of the outer wall of the connecting post 204. The abutment plate 203 provides the action point for the return spring 3. A limiting pin 205 is provided through the top of the connecting post 204. The limiting pin 205 is located above the connecting post 204 and precisely limits the upward movement stroke of the connecting post 204 to prevent it from over-extending. The cylinder piston 202 and the connecting post 204 are both located inside the piston cylinder housing 201, and the connecting post 204 extends outside the piston cylinder housing 201 to connect and cooperate with other components. The return spring 3 is installed in a suitable position and abuts against the bottom of the abutment plate 203. During the movement of the device, the return spring 3 can use its own elastic force to return the relevant components to the initial position.

[0021] Example 3 The foot pedal mechanism 11 includes a base 1101, with fixing screws 1102 passing through each of the four corners of the top of the base 1101. A support rod 1103 is provided on the side of the top of the base 1101 away from the connecting post 204. A limiting protrusion 1104 is provided on the top of the side of the support rod 1103 away from the connecting post 204. An abutment rod 1105 is provided on the top of the limiting protrusion 1104. An abutment wheel 1106 is provided on the inner wall of the middle section of the abutment rod 1105. An abutment wheel 1106 is provided on the end of the abutment rod 1105 away from the limiting protrusion 1104. There is a foot pedal 1107, and a foot pedal 1108 is provided at the top of the end of the foot pedal 1107 away from the abutment wheel 1106. The limiting protrusion 1104 limits the abutment rod 1105. The support rod 1103 and the abutment rod 1105 are connected to each other through a rotating shaft. The abutment wheel 1106 and the abutment rod 1105 are connected to each other through a rotating shaft. The abutment wheel 1106 abuts against the top of the connecting column 204. The bottom of the foot pedal mechanism 11 is the base 1101, which provides a stable support foundation for the entire mechanism. Fixing screws 1102 are carefully set at the four corners of the top of the base 1101. With these fixing screws 1102, the base 1101 can be firmly installed on the valve block 4 and other corresponding positions, ensuring that the mechanism will not shake or shift during operation. On the side of the top of the base 1101 away from the connecting column 204, a support rod 1103 is vertically installed. The support rod 1103 not only supports the upper part, but also has a limiting protrusion 1104 on its top side away from the connecting column 204. The limiting protrusion 1104 has a specific shape, and its top is used to place the abutment rod 1105 and precisely limit the range of motion of the abutment rod 1105 to prevent it from swinging excessively or leaving the predetermined position during operation.

[0022] The abutment rod 1105 is mounted on the support rod 1103, and the two are connected to each other via a pivot, allowing the abutment rod 1105 to rotate flexibly around the pivot. Abutment wheels 1106 are positioned opposite each other on the inner wall of the middle section of the abutment rod 1105. The abutment wheels 1106 are also connected to the abutment rod 1105 via a pivot and can rotate freely. The abutment wheels 1106 are cleverly designed; they abut against the top of the connecting column 204. During foot pedal operation, the rolling friction between the abutment wheels 1106 and the connecting column 204 reduces friction, making operation more effortless and smoother. A foot pedal 1107 is mounted opposite each other at the end of the abutment rod 1105 away from the limiting protrusion 1104. The foot pedal 1107 provides a footrest for the operator, and a foot pedal 1108 is located at the top of the end away from the abutment wheels 1106. The surface of the foot pedal 1108 is usually treated with anti-slip material to increase the friction when the operator steps on it, prevent slipping, and ensure operational safety. When the operator steps on the foot pedal 1108, the force is transmitted to the abutment rod 1105 through the foot pedal 1107. The abutment rod 1105 rotates around the pivot connected to the support rod 1103, while the abutment wheel 1106 rolls on the top of the connecting column 204, transmitting the force to the connecting column 204, which in turn drives the piston cylinder mechanism 2 and other related components to move, realizing the lifting and lowering operation of the device. The limiting protrusion 1104 limits the range of motion of the abutment rod 1105 throughout the process, ensuring the stability and reliability of the operation.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A hydraulic cylinder foot-operated lifting device, comprising a valve block (4), characterized in that, A hydraulic cylinder mechanism (1) is provided on one side of the top of the plunger cylinder mechanism (2). A pressure relief assembly (7) is provided at the middle position on the side of the top of the valve block (4) away from the hydraulic cylinder mechanism (1). A universal joint (8) is provided on the top of the pressure relief assembly (7). A pressure relief rod (9) is provided on the top of the universal joint (8). A pressure relief rod fixing bracket (10) is provided between the top of the outer wall of the hydraulic cylinder mechanism (1) and the middle section of the outer wall of the pressure relief rod (9). A column is provided on the top of the valve block (4) on the side between the hydraulic cylinder mechanism (1) and the pressure relief assembly (7). A piston cylinder mechanism (2) is provided with a surrounding return spring (3) on the outer wall of the piston cylinder mechanism (2). A foot pedal mechanism (11) is provided on the top of the valve block (4) on the side away from the piston cylinder mechanism (2) between the hydraulic cylinder mechanism (1) and the pressure relief assembly (7). A first cartridge check valve (5) is provided on one end of the outer wall of the valve block (4) near the hydraulic cylinder mechanism (1). A second cartridge check valve (6) is provided on the other end of the outer wall of the valve block (4) on the same side as the first cartridge check valve (5) near the hydraulic cylinder mechanism (1).

2. The hydraulic cylinder foot-operated lifting device according to claim 1, characterized in that, The plunger cylinder mechanism (2) and the return spring (3) are both located below the foot pedal mechanism (11), and the plunger cylinder mechanism (2), the return spring (3) and the foot pedal mechanism (11) are all located below the pressure relief rod fixing bracket (10).

3. The hydraulic cylinder foot pedal lifting device according to claim 2, characterized in that, The hydraulic cylinder mechanism (1) includes an outer cylinder (101), an inner cylinder (102) is provided between the inner walls of the outer cylinder (101), an oil tank (103) is provided between the outer cylinder (101) and the inner cylinder (102), an oil cylinder (104) is provided inside the inner cylinder (102), and a hydraulic cylinder rod (105) is provided through the top of the inner cylinder (102).

4. The hydraulic cylinder foot pedal lifting device according to claim 3, characterized in that, The plunger cylinder mechanism (2) includes a plunger cylinder housing (201), a cylinder plug (202) is provided inside the plunger cylinder housing (201), a connecting post (204) is provided through the top of the cylinder plug (202), an abutment plate (203) is provided above the outer wall of the connecting post (204), and a limiting pin (205) is provided through the top of the connecting post (204).

5. A hydraulic cylinder foot-operated lifting device according to claim 4, characterized in that, The piston (202) and the connecting post (204) are both located inside the piston cylinder housing (201), and the connecting post (204) extends outside the piston cylinder housing (201). The limiting pin (205) is located above the connecting post (204), and the limiting pin (205) limits the connecting post (204). The reset spring (3) abuts against the bottom of the abutment plate (203).

6. The hydraulic cylinder foot-operated lifting device according to claim 5, characterized in that, The foot pedal mechanism (11) includes a base (1101), with fixing screws (1102) passing through the four corners of the top of the base (1101). A support rod (1103) is provided on the side of the top of the base (1101) away from the connecting column (204). A limiting protrusion (1104) is provided on the top of the side of the support rod (1103) away from the connecting column (204). An abutting rod (1105) is provided on the top of the limiting protrusion (1104). An abutting wheel (1106) is provided between the inner walls of the middle section of the abutting rod (1105). A foot pedal (1107) is provided between the ends of the abutting rod (1105) away from the limiting protrusion (1104). A foot pedal (1108) is provided on the top of the end of the foot pedal (1107) away from the abutting wheel (1106).

7. A hydraulic cylinder foot-operated lifting device according to claim 6, characterized in that, The limiting protrusion (1104) limits the abutment rod (1105). The support rod (1103) and the abutment rod (1105) are connected to each other through a rotating shaft. The abutment wheel (1106) and the abutment rod (1105) are connected to each other through a rotating shaft. The abutment wheel (1106) abuts against the top of the connecting column (204).

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