Cab tilting cylinder with new joint location

Abstract

The utility model discloses a cab turnover oil cylinder adopting new joint position, including oil cylinder base and the cylinder that is connected with oil cylinder base, the cylinder is divided into rodless chamber and has the chamber by piston in, and the piston is connected with the piston rod that slides relative to the cylinder, and the lower part and the side part of oil cylinder base are connected with first joint and second joint respectively, and first joint is connected with second channel and second oil circuit, and second joint is connected with first channel and first oil circuit, and the position of second joint towards first channel end is equipped with sealing element and check valve in proper order, and the lower end sliding connection of second channel has the reversing valve that moves to check valve direction, the utility model discloses a cab turnover oil cylinder, and the joint position of first joint and second joint connected with oil cylinder base has been changed, and the oil circuit and structure in the inside of oil cylinder base have been optimized, solve the problem that oil cylinder lower end installation space is compact and is easy to appear part interference, and the installation operation of oil cylinder is more stable.

Description

Technical Field

[0001] This utility model relates to the field of cab tilting cylinder technology, and in particular to a cab tilting cylinder with a novel joint position. Background Technology

[0002] Most trucks today are cab-over trucks, meaning the cab is above the engine. To maintain the engine, the cab needs to be tilted away, requiring a cab tilting cylinder. The cab tilting cylinder is used to raise and lower the truck cab, facilitating maintenance of the engine and other components underneath. Existing cab tilting cylinders (hereinafter referred to as cylinders) are typically installed below the passenger side of the vehicle's cab, with the upper end connected to the cab and the lower end connected to the chassis. As an actuator, the cylinder requires an external hydraulic pump to operate. Usually, both the cylinder and the pump have connectors, and a high-pressure hose connects them.

[0003] For example, the existing patent document CN219932615U discloses "a cab tilting hydraulic cylinder with a quick-assembly connector." In this technical solution, both connectors of the hydraulic cylinder are located on the same side of the lower end of the cylinder. The connectors occupy a certain amount of space, and sufficient space needs to be reserved in the lower part of the vehicle frame structure for the smooth installation of the hydraulic cylinder. However, due to the requirements of overall vehicle weight reduction and lightweighting, the vehicle frame structure is becoming increasingly compact, and the installation space at the lower end of the cylinder is becoming increasingly limited. Traditional cylinder connectors often interfere with other parts, and the high-pressure hoses connected to the cylinder also interfere with other parts. Under these circumstances, cylinder installation is inconvenient, and cylinder malfunctions are prone to occur during operation. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, a new type of cab tilting cylinder with a novel joint position is proposed. This solves the technical problems of interference caused by the compact space at the lower end of the cylinder and the inconvenience of cylinder installation. The specific technical solution of this utility model is as follows.

[0005] This utility model discloses a cab tilting cylinder with a novel connector position, comprising a cylinder base and a cylinder body connected to the cylinder base. The cylinder body is divided into a rodless chamber and a rod chamber by a piston. The piston is connected to a piston rod that slides relative to the cylinder body. The lower part and the side part of the cylinder base are respectively connected to a first connector and a second connector. The first connector is connected to a second channel and a second oil circuit. The second connector is connected to the first channel and the first oil circuit. A seal and a one-way valve are sequentially provided on the second connector facing the end of the first channel. A reversing valve that moves towards the one-way valve is slidably connected to the lower end of the second channel.

[0006] As a further technical solution, the one-way valve includes a spring connected to the end of the second connector and a steel ball connected to the spring that can block the end of the first channel.

[0007] As a further technical solution, the reversing valve includes a push rod facing the steel ball and a sealing ring surrounding the outer periphery of the reversing valve.

[0008] As a further technical solution, the outer diameter of the top rod is smaller than the inner diameter of the end of the first channel.

[0009] As a further technical solution, the cylinder base is provided with a number of plugs that block the first channel and the second channel.

[0010] As a further technical solution, the first oil circuit is connected to the rodless cavity, and the second oil circuit is connected to the rod cavity.

[0011] As a further technical solution, the cylinder base is connected to bolts that restrict the movement of the directional valve.

[0012] The beneficial effects of this utility model are as follows: The cab tilting cylinder of this utility model changes the joint positions of the first and second joints connecting the cylinder base, and optimizes the oil circuit and structure inside the cylinder base. This solves the problems of tight installation space at the lower end of the cylinder and easy interference of parts, making the cylinder installation more convenient and leaving more design space for the vehicle frame structure. At the same time, due to the change of joint position, interference of parts is prevented, and the arrangement of high-pressure hoses can be more flexible and mobile, making the installation and operation of the cylinder more stable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the cab tilting cylinder of this utility model with a new type of connector position; Figure 2 This is a cross-sectional plan view of the cylinder of the cab tilting cylinder with a new type of connector position according to this utility model; Figure 3 This is a cross-sectional plan view of the cylinder base of the cab tilting cylinder with a novel joint position according to this utility model. In the diagram: 1-Cylinder base; 2-First connector; 3-Second connector; 4-Seal; 5-One-way valve; 501-Spring; 502-Steel ball; 6-Reversing valve; 601-Push rod; 602-Sealing ring; 7-First channel; 8-Second channel; 9-Bolt; 10-Cylinder body; 11-Rodless chamber; 12-Rod chamber; 13-Piston; 14-Piston rod; 15-Plug; 16-First oil passage; 17-Second oil passage. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0015] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] like Figure 1 and Figure 2 As shown, this utility model discloses a cab tilting cylinder with a novel joint position, including a cylinder base 1 and a cylinder 10 connected to the cylinder base 1. The cylinder 10 is divided into a rodless chamber 11 and a rod chamber 12 by a piston 13. The piston 13 is connected to a piston rod 14 that slides relative to the cylinder 10. The cylinder 10, the piston rod 14, and other seals in the cylinder 10 all adopt existing technology, which will not be described in detail in this utility model.

[0017] like Figure 1 As shown, in a preferred embodiment, the lower part and the side part of the cylinder base 1 are respectively connected to a first connector 2 and a second connector 3. In this embodiment, the first connector 2 and the second connector 3 are located on the side and the lower part of the cylinder base 1, respectively. Compared with the connector position of the traditional cylinder (above the cylinder base), it can leave enough space for the structural design of the vehicle frame and prevent parts from interfering with each other. The arrangement of the high-pressure hose can also be more flexible and mobile, and the installation and operation of the cylinder is more stable.

[0018] like Figure 3 As shown, in a preferred embodiment, the first connector 2 is connected to the second channel 8, the second channel 8 is connected to the second oil passage 17, and the second oil passage 17 is connected to the rod chamber 12. At this time, the oil in the oil tank can enter the second channel 8 from the first connector 2, and then enter the second oil passage 17 and the rod chamber 12. The second connector 3 is connected to the first channel 7, and the cylinder base 1 is provided with a plurality of plugs 15 that block the first channel 7 and the second channel 8. Figure 3The arrow shown indicates one direction of oil flow in the first channel 7. Of course, the oil in the first channel 7 and the second channel 8 does not only flow in one direction; both channels allow oil to enter and exit. The first channel 7 is connected to the first oil passage 16, which connects from the lower part of the cylinder base 1 to the rodless chamber 11. Thus, oil can flow into the first channel 7 from the second connector 3 and then enter the first oil passage 16 and the rodless chamber 11 from the first channel 7.

[0019] At this time, the second connector 3 is assembled with the cylinder base 1 via threads. A sealing element 4 is sequentially installed on the second connector 3 facing the end of the first channel 7. The sealing element 4 is a sealing ring surrounding the outer circumferential groove of the end of the second connector 3. A one-way valve 5 is connected to the end of the second connector 3. A directional valve 6, which moves towards the one-way valve 5, is laterally slidably connected to the lower end of the second channel 8. The directional valve 6 can move under the oil pressure of the second channel 8 and open the one-way valve 5. Simultaneously, the cylinder base 1 is connected with bolts 9 that limit the excessive axial movement of the directional valve 6.

[0020] In a preferred embodiment, the one-way valve 5 includes a spring 501 connected to the end of the second connector 3 and a steel ball 502 connected to the spring 501 that can block the end of the first channel 7. The diameter of the steel ball 502 is larger than the inner diameter of the end of the first channel 7. In this case, the reversing valve 6 includes a push rod 601 facing the steel ball 502 and a sealing ring 602 surrounding the outer periphery of the reversing valve 6. The sealing ring 602 is used to isolate the oil passage between the first channel 7 and the second channel 8. The outer diameter of the push rod 601 is smaller than the inner diameter of the end of the first channel 7, facilitating the push rod 601 to extend into the end of the first channel 7 and push the steel ball 502 open.

[0021] The working principle of this utility model: When the hydraulic cylinder is lifted: When the oil enters the hydraulic cylinder base 1 through the second connector 3 and the first channel 7, the oil can only enter the first oil passage 16 by pushing the steel ball 502 and the spring 501, and then enter the rodless chamber 12. At the same time, the oil in the rod chamber 11 returns to the second channel 8 and the first connector 2 through the second oil passage 17, and then returns to the oil tank. At this time, the piston rod 14 extends and the hydraulic cylinder performs the lifting action.

[0022] When the cylinder descends: the oil enters the second oil circuit 17 through the first connector 2 and the second channel 8, and then enters the rod chamber 11. At the same time, the oil pushes the push rod 601 to the right, opening the one-way valve 5 composed of the steel ball 502 and the spring 501. At this time, the oil in the rodless chamber 12 can pass through the first oil circuit 16 and the first channel 7, and then return to the oil tank through the second connector 3. At this time, the piston rod 14 retracts, and the cylinder performs a downward movement.

[0023] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A cab tilting cylinder with a novel joint position, comprising a cylinder base (1) and a cylinder (10) connected to the cylinder base (1), wherein the cylinder (10) is divided into a rodless chamber (11) and a rod chamber (12) by a piston (13), and the piston (13) is connected to a piston rod (14) that slides relative to the cylinder (10), characterized in that: The lower part and the side part of the cylinder base (1) are respectively connected to a first connector (2) and a second connector (3). The first connector (2) is connected to a second channel (8) and a second oil circuit (17). The second connector (3) is connected to a first channel (7) and a first oil circuit (16). The second connector (3) is provided with a seal (4) and a one-way valve (5) in sequence at the position facing the end of the first channel (7). The lower end of the second channel (8) is slidably connected to a reversing valve (6) that moves in the direction of the one-way valve (5).

2. The cab tilting cylinder with a novel joint position as described in claim 1, characterized in that: The one-way valve (5) includes a spring (501) connected to the end of the second connector (3) and a steel ball (502) connected to the spring (501) that can block the end of the first channel (7).

3. The cab tilting cylinder with a novel joint position according to claim 2, characterized in that: The reversing valve (6) includes a push rod (601) facing the steel ball (502) and a sealing ring (602) surrounding the outer periphery of the reversing valve (6).

4. The cab tilting cylinder with a novel joint position according to claim 3, characterized in that: The outer diameter of the top rod (601) is smaller than the inner diameter of the end of the first channel (7).

5. The cab tilting cylinder with a novel joint position according to claim 1, characterized in that: The cylinder base (1) is provided with a plurality of plugs (15) that block the first channel (7) and the second channel (8).

6. The cab tilting cylinder with a novel joint position according to claim 1, characterized in that: The first oil passage (16) is connected to the rodless cavity (11), and the second oil passage (17) is connected to the rod cavity (12).

7. The cab tilting cylinder with a novel joint position according to claim 1, characterized in that: The cylinder base (1) is connected to a bolt (9) that restricts the movement of the directional valve (6).

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