Integrally integrated oil cylinder actuator

Abstract

The utility model particularly relates to an integral oil cylinder actuator. Comprising a transmission case, an execution oil cylinder and two integrated oil ways, and the transmission case and the execution oil cylinder are of an integrated structure; a transmission cavity is formed in the transmission box, a piston cavity is formed in the execution oil cylinder, and the transmission cavity is communicated with the piston cavity; a first oil port is formed in one end of the integrated oil way, and a second oil port is formed in the other end; the first oil ports are located at the two ends of the piston cavity, and the second oil ports are formed in the execution oil cylinder or the transmission case. According to the scheme, the overall integrated oil cylinder actuator has the advantages that the number of parts is small, the number of assembly positions is small, the production and machining period is short, the assembly efficiency is high, and the risk of hydraulic leakage of the whole machine is low.

Description

Technical Field

[0001] This utility model specifically relates to an integrated hydraulic cylinder actuator. Background Technology

[0002] The original actuator used a split design, such as Figure 6 As shown, the transmission box 20 and the split-type hydraulic cylinder 30 are designed, manufactured, and assembled independently. However, during application, the following disadvantages of the split design were found: 1. A large number of parts are required, resulting in a long processing cycle; the transmission box has many processing features due to assembly requirements, leading to a long processing cycle. 2. Since the oil port 50 is located on the end cover 40, each hydraulic cylinder needs an independently designed end cover with an oil port, increasing assembly difficulty. 3. The split-type hydraulic cylinder, i.e., the independent hydraulic cylinder, has a complex processing process, a long processing cycle, and high processing costs. 4. The numerous assembly and mating parts increase the number of sealing parts and the number of sealing components, increasing the overall cost and the risk of hydraulic leakage. Utility Model Content

[0003] The present invention aims to provide an integrated hydraulic cylinder actuator, which reduces the number of parts and assembly positions, shortens the production and processing cycle and improves assembly efficiency; at the same time, it reduces the risk of hydraulic leakage of the whole machine.

[0004] The integrated hydraulic cylinder actuator in this solution includes a transmission box, an actuator cylinder, and two integrated hydraulic circuits. The transmission box and the actuator cylinder are a single unit, which avoids coaxiality errors between the two cylinders. Furthermore, no sealing components are required for assembly between the transmission box and the actuator cylinder. The transmission box contains a transmission chamber, and the actuator cylinder contains a piston chamber, which are connected. One end of the integrated hydraulic circuit has a first oil port, and the other end has a second oil port. The first oil port is located at both ends of the piston chamber, and the second oil port is located on the actuator cylinder or the transmission box. Specifically, the piston chamber has a first oil port a and a first oil port b at its two ends, and the actuator cylinder or the transmission box has a second oil port a and a second oil port b. There are two integrated hydraulic circuits, one connecting the first oil port a to the other connecting the first oil port a, and the other connecting the first oil port b to the other. The machine has fewer parts, reducing assembly positions and shortening the processing cycle.

[0005] The advantages of this utility model are: 1) It reduces the number of parts in the whole machine, solving the problems of high cost and long production cycle of each part in the split design; 2) It reduces the number of assembly positions, eliminates unnecessary connecting parts and structures, avoids the coaxiality error of the two cylinders at both ends caused by the assembly error of the split design, and improves the assembly efficiency; 3) The material covers the sealing parts, reducing the assembly of sealing parts and the processing of the sealing mechanism of the parts, and reducing the cost of the whole machine; 4) The reduction of sealing parts reduces the risk of hydraulic leakage of the whole machine; 5) It integrates part of the oil circuit into the transmission box and the actuator cylinder at the same time, which can simplify the structure of the control valve body and reduce the overall volume.

[0006] Furthermore, it also includes an actuator, which comprises a matching actuator gear and an actuator rod; the actuator gear is located within the transmission cavity; the actuator rod is located within the piston cavity, and pistons are fixedly connected to both ends of the actuator rod. Because the actuator cylinder adopts an integrated structure, unnecessary connecting parts and structures are eliminated, thus avoiding the coaxiality error of the two cylinders caused by assembly errors in a split design, which would affect the assembly of the actuator rod and piston. This not only improves the service life of the actuator rod and piston but also avoids frequent piston replacements and adjustments.

[0007] Furthermore, it also includes a transmission mechanism located within the transmission cavity. This transmission mechanism is preferably a gear drive.

[0008] Furthermore, the transmission cavity includes a primary transmission cavity and a secondary transmission cavity, with the transmission mechanism located in the primary transmission cavity and the actuating gear located in the secondary transmission cavity.

[0009] Furthermore, one end of the actuating gear is provided with a connecting shaft, the diameter of which is smaller than the diameter of the actuating gear; the secondary transmission cavity has a stepped structure to facilitate the installation and positioning of the transmission gear. The transmission mechanism is connected to the actuating gear via the connecting shaft.

[0010] Furthermore, a support plate is provided inside the piston chamber, and the support plate is located below the actuator rod; the support plate is arc-shaped and adapted to the actuator rod. Bolts pass through the piston chamber and are fixedly connected to the support plate.

[0011] Furthermore, the transmission chamber of the transmission box is connected to the middle of the piston chamber of the actuator cylinder.

[0012] Furthermore, cylinder end caps are provided at both ends of the actuator cylinder.

[0013] Furthermore, the roughness of the inner wall of the piston cavity is no greater than Ra0.3. Attached Figure Description

[0014] Figure 1 This is a perspective view of the integrated hydraulic cylinder actuator of this utility model;

[0015] Figure 2This is a structural diagram of the transmission box and the actuator cylinder in the integrated hydraulic cylinder actuator of this utility model;

[0016] Figure 3 This is a structural diagram of the integrated hydraulic cylinder actuator of this utility model;

[0017] Figure 4 This is a diagram showing the internal structure of the integrated hydraulic cylinder actuator of this utility model.

[0018] Figure 5 This is a partial sectional view of the integrated hydraulic cylinder actuator of this utility model;

[0019] Figure 6 This is a 3D view of the original actuator components.

[0020] In the diagram, 1 is the transmission box, 2 is the actuator cylinder, 3 is the transmission chamber, 3-1 is the primary transmission chamber, 3-2 is the secondary transmission chamber, 4 is the piston chamber, 5 is the integrated oil circuit, 6 is the first oil port a, 7 is the first oil port b, 8 is the second oil port a, 9 is the second oil port b, 10 is the plunger, 11 is the actuator gear, 12 is the actuator rod, 13 is the piston, 14 is the bevel gear, 15 is the transmission rod, 16 is the connecting shaft, 17 is the support plate, and 18 is the cylinder end cover. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] according to Figures 1 to 5As shown, the integrated hydraulic cylinder actuator includes a transmission housing 1, an actuator cylinder 2, and two integrated hydraulic circuits 5. The transmission housing 1 and the actuator cylinder 2 are a single unit. The transmission housing 1 contains a transmission chamber 3, and the actuator cylinder 2 contains a piston chamber 4. The transmission chamber 3 and the piston chamber 4 are connected. Preferably, the transmission housing 1 is located in the middle of the actuator cylinder 2, meaning the transmission chamber 3 and the piston chamber 4 are connected in the middle. One end of the integrated hydraulic circuit 5 has a first oil port, and the other end has a second oil port. The first oil port is located at both ends of the piston chamber 4, and the second oil port is located on the actuator cylinder 2 or the transmission housing 1. In this embodiment, the piston chamber 4 has a first oil port a6 and a first oil port b7 at both ends, and a second oil port a8 and a second oil port b9 are located on one end face of the transmission housing 1. The integrated hydraulic circuit 5 includes a transverse oil pipe and a longitudinal oil pipe, and is arranged along the sides of the actuator cylinder 2 and the transmission housing 1. The integrated oil circuit 5 has two lines, connecting the first oil port a6 to the second oil port a8, and the first oil port b7 to the second oil port b9. A plunger 10 is provided at the machined end of the oil pipe. Compared to the split design in the prior art, where the cylinder needs to be machined from seamless steel pipe and the transmission box 1 needs to be machined from a ductile iron casting blank, in this application, the transmission box 1 and the actuator cylinder 2 are forged into a single-piece blank. Preferably, the blank is integrally cast from QT450-10 cast iron and machined using a high-precision four-axis CNC machining center. The inner wall of the piston chamber 4 uses mirror rolling technology to achieve a roughness of no more than Ra0.3 at both ends, meeting the usage requirements. The integral forging process has significant advantages in blank cost and processing cycle. Furthermore, the integrated design integrates part of the oil circuit into the integrated hydraulic cylinder actuator, simplifying the control valve body structure and reducing the size of the integrated hydraulic cylinder actuator components.

[0023] As a further improvement to this embodiment, an actuator is also included. This actuator includes a matching actuator gear 11 and actuator rod 12. The actuator gear 11 is located within the transmission chamber 3, and the actuator rod 12 is located within the piston chamber 4. Pistons 13 are respectively engaged at both ends of the actuator rod 12, and these pistons 13 are adapted to the piston chamber 4. When the actuator gear 11 rotates clockwise or counterclockwise, it drives the actuator rod 12 to move left or right. The diameter of the side opening of the transmission box 1 is larger than the diameter of the actuator gear 11, facilitating the installation and adjustment of the actuator gear 11.

[0024] In this embodiment, if the transmission rod 15 is coaxial with the actuating gear 11, the transmission rod 15 can be directly engaged with the actuating gear 11; if the shaft of the transmission rod 15 is perpendicular to the shaft of the actuating gear 11, the transmission rod 15 can be connected to the actuating gear 11 through a transmission mechanism. This transmission mechanism is preferably a pair of bevel gears 14. Correspondingly, the transmission cavity 3 is provided with a primary transmission cavity 3-1 and a secondary transmission cavity 3-2, with the bevel gears 14 located in the primary transmission cavity 3-1 and the actuating gear 11 located in the secondary transmission cavity 3-2. The axial directions of the primary transmission cavity 3-1 and the secondary transmission cavity 3-2 are perpendicular to each other.

[0025] To facilitate the installation and positioning of the transmission gear, a connecting shaft 16 is integrally provided at one end of the actuating gear 11. The diameter of the connecting shaft 16 is smaller than that of the actuating gear 11. The secondary transmission chamber 3-2 has a stepped structure. An arc-shaped support plate 17 is provided inside the piston chamber 4. The support plate 17 supports the actuating rod 12, allowing the actuating rod 12 to fit tightly with the actuating gear 11. Bolts pass through the piston chamber 4 to fix the support plate 17 to the bottom of the piston chamber 4. Cylinder end caps 18 are bolted to both ends of the actuating cylinder 2, and a sealing ring is provided between the cylinder end caps 18 and the port of the actuating cylinder 2.

[0026] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. An integrally integrated oil cylinder actuator, characterized by: The transmission box, the execution cylinder and two integrated oil paths are integrated; the transmission box is provided with a transmission cavity, the execution cylinder is provided with a piston cavity, and the transmission cavity and the piston cavity are communicated; one end of the integrated oil path is provided with a first oil port, and the other end is provided with a second oil port; the first oil port is located at both ends of the piston cavity, and the second oil port is arranged on the execution cylinder or the transmission box.

2. The monobloc integrated cylinder actuator of claim 1, wherein: The actuator is further included, and the actuator includes a matched execution gear and an execution rod; the execution gear is located in the transmission cavity; the execution rod is located in the piston cavity, and both ends of the execution rod are fixedly connected with pistons.

3. The monobloc integrated cylinder actuator of claim 2, wherein: The transmission mechanism is further included, and the transmission mechanism is located in the transmission cavity.

4. The monobloc integrated cylinder actuator of claim 3, wherein: The transmission cavity includes a primary transmission cavity and a secondary transmission cavity, the transmission mechanism is located in the primary transmission cavity, and the execution gear is located in the secondary transmission cavity.

5. The monolithically integrated rod actuator of claim 4, wherein: One end of the execution gear is provided with a connecting shaft, the diameter of the connecting shaft is smaller than the diameter of the execution gear; and the secondary transmission cavity is a stepped structure.

6. The monolithically integrated rod actuator of claim 1, wherein: The supporting plate is further included, and the supporting plate is located at the bottom of the cavity of the piston cavity; the supporting plate is an arc surface matched with the execution rod.

7. The monolithically integrated rod actuator of claim 1, wherein: The transmission cavity of the transmission box is communicated with the middle part of the piston cavity of the execution cylinder.

8. The monolithically integrated rod actuator of claim 1, wherein: Both ends of the execution cylinder are provided with cylinder end covers.

9. The monobloc integrated cylinder actuator of claim 1, wherein: The roughness of the inner wall of the piston cavity is not greater than Ra0.3.

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