Hydraulic cylinder expansion sleeve locking installation positioning tool

Abstract

This utility model belongs to the field of mechanical assembly technology, and particularly relates to a hydraulic cylinder expansion sleeve locking and positioning fixture, including a support frame, an electric slide rail one, an electric slider one, a support plate, and an electric slide rail two. The electric slide rail one is vertically mounted on the upper part of the support frame, the electric slider one is slidably mounted on the electric slide rail one, the support plate is mounted on the front of the electric slider one, and electric slide rail two is mounted on both sides of the support plate. By setting a limiting plate, a clamping plate, and a limiting ring, triple rigid constraints are achieved on the shaft hub and the expansion sleeve pre-assembled body. The limiting plate supports the shaft hub from below to prevent it from axially moving during tightening. The clamping plate clamps the outer circle of the expansion sleeve from both sides to ensure that the radial position of the expansion sleeve is stable and does not shift. The limiting ring is inserted into the upper gap of the expansion sleeve, so that the screw of the expansion sleeve slides into the limiting groove of the limiting ring, achieving circumferential anti-rotation locking. This effectively solves the problems of misalignment and uneven force caused by the lack of constraints in traditional manual operation, ensuring a stable and controllable assembly process.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical assembly technology, and in particular relates to a hydraulic cylinder expansion sleeve locking and positioning fixture. Background Technology

[0002] In the assembly process of hydraulic cylinders, an expansion sleeve connection structure is often used to achieve a firm connection and reliable locking between the shaft and the hub. By placing the expansion sleeve on the shaft and then placing the hub on the outside of the expansion sleeve, and by tightening the multiple screws distributed around the circumference of the expansion sleeve, the hydraulic medium inside the expansion sleeve is pushed to make the expansion sleeve expand radially and uniformly, thereby forming an interference fit between the shaft and the hub, achieving a keyless connection and a rigid connection with high coaxial precision.

[0003] However, the installation of expansion sleeves still generally relies on manual positioning and simple hand tools. The entire process lacks the support of dedicated installation and positioning fixtures. During the process of fitting the expansion sleeve into the shaft body, then fitting the shaft hub and gradually tightening the screws, the expansion sleeve and shaft hub are very prone to misalignment due to the lack of effective constraints, which affects the coaxiality of the assembly and the reliability of the connection. It may also cause the expansion sleeve to over-expand locally under non-uniform force, which in turn leads to a decrease in transmission accuracy and seriously restricts the stability of assembly quality.

[0004] Therefore, a hydraulic cylinder expansion sleeve locking and positioning fixture is particularly needed to solve the above problems. Utility Model Content

[0005] To overcome the shortcomings of unstable positioning and uneven force during installation due to the lack of dedicated tooling, which seriously affects the connection accuracy and assembly quality stability, this utility model provides a hydraulic cylinder expansion sleeve locking installation positioning tooling.

[0006] This utility model is achieved through the following technical approach: a hydraulic cylinder expansion sleeve locking and positioning fixture, comprising a support frame, an electric slide rail one, an electric slider one, a support plate, an electric slide rail two, an electric slider two, a limit plate, a clamping plate, a support shell, a limit ring, a return spring, and a controller. The electric slide rail one is vertically mounted on the upper part of the support frame, and the electric slider one is slidably mounted on the electric slide rail one. The support plate is mounted on the front part of the electric slider one, and electric slide rail two is mounted on both sides of the support plate. An electric slider two is slidably mounted on each electric slide rail two. A limit plate is installed at the front of slider two, and the two limit plates are in contact with each other. Each limit plate is equipped with a clamping plate, and the two clamping plates are in contact with each other. A support shell is fixed to the side of the two clamping plates that are far apart from each other. A limit ring is slidably set on each support shell. A return spring is fixed between the limit ring and the corresponding support shell. The two limit rings are in contact with each other. Each limit ring is provided with multiple circumferentially distributed limit grooves. The controller is installed on the upper part of the support frame and is located above the electric slide rail one. Electric slide rail one, electric slider one, electric slide rail two, and electric slider two are all electrically connected to the controller.

[0007] Furthermore, it also includes a support plate and a centering ring. The support plate is fixed to the lower part of the support frame, and two centering rings are slidably arranged side by side on the upper part of the support plate, with the two centering rings facing each other.

[0008] Furthermore, the lower part of the central ring that slides in contact with the support plate is designed as a damping block.

[0009] Furthermore, a protective pad is provided on the curved surface of the central ring.

[0010] Furthermore, the clamping arc surface on the upper part of the clamp is covered with an anti-slip pad.

[0011] Furthermore, the central axis of the circular clamping space formed after the two clamps come into contact is on the same vertical line as the central symmetrical point between the two central rings.

[0012] Beneficial effects: 1. By setting a limiting plate, clamping plate and limiting ring, triple rigid constraints are achieved on the shaft hub and the pre-assembled expansion sleeve. The limiting plate supports the shaft hub from below to prevent it from moving axially during tightening. The clamping plate clamps the outer circle of the expansion sleeve from both sides to ensure that the radial position of the expansion sleeve is stable and does not shift. The limiting ring is inserted into the upper gap of the expansion sleeve, so that the screw of the expansion sleeve slides into the limiting groove of the limiting ring, realizing circumferential anti-rotation locking. This effectively solves the problems of misalignment and uneven force caused by the lack of constraints in traditional manual operation, and ensures that the assembly process is stable and controllable.

[0013] 2. By setting a support plate and a centering ring, the shaft can be self-aligned and positioned, ensuring that the center line of the shaft is precisely aligned with the center line of the upper expansion sleeve, thus improving the coaxiality of the assembly and the reliability of the connection. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the electric slide rail, electric slider, and support plate components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the electric slide rail II, electric slider II, and limiting plate of this utility model.

[0017] Figure 4 This is a partial cross-sectional view of the support shell component of this utility model.

[0018] Attached reference numerals: 1. Support frame, 2. Support plate, 3. Centering ring, 4. Electric slide rail one, 5. Electric slider one, 6. Support plate, 7. Electric slide rail two, 8. Electric slider two, 9. Limiting plate, 10. Clamping plate, 11. Support shell, 12. Limiting ring, 13. Return spring, 14. Controller, 15. Expansion sleeve. Detailed Implementation

[0019] Example: A hydraulic cylinder expansion sleeve locking and positioning fixture, such as... Figures 1-4 As shown, the system includes a support frame 1, an electric slide rail 4, an electric slider 5, a support plate 6, an electric slide rail 7, an electric slider 8, a limiting plate 9, a clamping plate 10, a support shell 11, a limiting ring 12, a return spring 13, and a controller 14. The electric slide rail 4 is bolted to the upper part of the support frame 1. The electric slider 5 is slidably mounted on the electric slide rail 4. The support plate 6 is bolted to the front of the electric slider 5. Electric slide rails 7 are bolted to both sides of the support plate 6. An electric slider 8 is slidably mounted on each electric slide rail 7. A limiting plate 9 is bolted to the front of each electric slider 8, and the two limiting plates 9 are in contact. A clamping plate 10 is bolted to each limiting plate 9, and the two clamping plates 10 are in contact. The upper clamping arc surface of the 10 is covered with an anti-slip pad to enhance clamping stability. Support shells 11 are fixedly connected to the sides of the two clamping plates 10 that are far apart from each other. Limiting rings 12 are slidably provided on each support shell 11. Return springs 13 are fixedly connected between the limiting rings 12 and the corresponding support shells 11. The return springs 13 can provide a reset force for the limiting rings 12. The two limiting rings 12 are in contact with each other. Each limiting ring 12 is provided with three circumferentially distributed limiting grooves. The controller 14 is fixed to the upper part of the support frame 1 by bolts and is located above the electric slide rail 4. Electric slide rail 4, electric slider 5, electric slide rail 7 and electric slider 8 are all electrically connected to the controller 14. The controller 14 is a programmable logic controller, model Siemens S7-1215C DC / DC / DC, which can centrally control multiple electrical components.

[0020] like Figure 1 The device also includes a support plate 2 and a centering ring 3. The support plate 2 is fixedly connected to the lower part of the support frame 1. Two centering rings 3 are slidably arranged side by side on the upper part of the support plate 2. The two centering rings 3 are arranged opposite each other. The lower part of the centering ring 3 that slides in contact with the support plate 2 is provided with a damping block to provide appropriate frictional resistance and prevent the centering ring 3 from sliding at will. A protective pad is provided on the arc surface of the centering ring 3. The central axis of the circular clamping space formed after the two clamping plates 10 come into contact is kept on the same vertical line as the central symmetrical point between the two centering rings 3, ensuring that the expansion sleeve 15 clamped by the two clamping plates 10 can be vertically aligned with the axis centered by the two centering rings 3.

[0021] In use, the operator activates the electric slide rail 14 via controller 14, controlling the electric slider 15 to slide upwards to the top of the electric slide rail 14, raising the support plate 6, limit plate 9, clamping plate 10, and limit ring 12 to their highest positions. Then, the two electric slide rails 27 are activated, controlling the two electric sliders 28 to slide outwards synchronously, pulling the two limit plates 9, two clamping plates 10, and two limit rings 12 to an appropriate distance. Next, the expansion sleeve 15 of the bushing is placed between the two limit plates 9, two clamping plates 10, and two limit rings 12, ensuring that the height of the bushing is higher than the gap at the top of the limit plates 9 and expansion sleeve 15, aligning with the limit ring 12. Finally, the two electric sliders 28 are controlled to slide inwards, causing the two limit plates 9, two clamping plates 10, and two limit rings 12 to... When the inner moving phases come into contact, the two limiting plates 9 support the lower end face of the shaft hub, achieving axial limiting of the shaft hub. When the two clamping plates 10 come into contact, they clamp the outer circle of the expansion sleeve 15. When the two limiting rings 12 come into contact, they are inserted into the gap in the upper part of the expansion sleeve 15, and the four screws of the expansion sleeve 15 slide into the corresponding limiting grooves of the two limiting rings 12, respectively, to achieve circumferential anti-rotation locking of the expansion sleeve 15. Then, the shaft is placed on the support plate 2, and the two centering rings 3 are pushed inward to center the position of the shaft, ensuring that the center line of the shaft coincides with the center line of the upper expansion sleeve 15. After confirming that the alignment is correct, the electric slider 5 is controlled to drive the support plate 6 to slide down to the appropriate position, so that the expansion sleeve 15 is fitted on the shaft. After fitting, the four screws on the expansion sleeve 15 can be tightened with tools for assembly.

[0022] In addition, the height of the limiting ring 12 can be adjusted by the return spring 13, so that the limiting ring 12 is aligned with the gap of the upper part of the expansion sleeve 15 at different heights, ensuring that the screw slides smoothly into the limiting groove and improving the applicability of the tooling.

Claims

1. A hydraulic cylinder expansion sleeve locking and positioning fixture, characterized in that, The system includes a support frame (1), an electric slide rail one (4), an electric slider one (5), a support plate (6), an electric slide rail two (7), an electric slider two (8), a limiting plate (9), a clamping plate (10), a support shell (11), a limiting ring (12), a return spring (13), and a controller (14). The electric slide rail one (4) is vertically installed on the upper part of the support frame (1). The electric slider one (5) is slidably mounted on the electric slide rail one (4). The support plate (6) is installed in front of the electric slider one (5). Electric slide rail two (7) is installed on both sides of the support plate (6). An electric slider two (8) is slidably mounted on each electric slide rail two (7). A limiting plate (9) is installed in front of each electric slider two (8). The plates (9) are in contact with each other, and each limiting plate (9) is equipped with a clamping plate (10). The two clamping plates (10) are in contact with each other, and the two clamping plates (10) are fixedly connected to the side away from each other. Each supporting shell (11) is slidably provided with a limiting ring (12). A return spring (13) is fixedly connected between the limiting ring (12) and the corresponding supporting shell (11). The two limiting rings (12) are in contact with each other, and each limiting ring (12) is provided with multiple circumferentially distributed limiting grooves. The controller (14) is installed on the upper part of the support frame (1) and is located above the electric slide rail one (4). The electric slide rail one (4), electric slider one (5), electric slide rail two (7) and electric slider two (8) are all electrically connected to the controller (14).

2. The hydraulic cylinder expansion sleeve locking and positioning fixture according to claim 1, characterized in that, It also includes a support plate (2) and a centering ring (3). The support plate (2) is fixed to the lower part of the support frame (1). Two centering rings (3) are slidably arranged on the upper part of the support plate (2) and are arranged opposite to each other.

3. The hydraulic cylinder expansion sleeve locking and positioning fixture according to claim 2, characterized in that, The lower part of the central ring (3) and the support plate (2) in sliding contact is set as a damping block.

4. The hydraulic cylinder expansion sleeve locking and positioning fixture according to claim 3, characterized in that, A protective pad is provided on the arc surface of the central ring (3).

5. The hydraulic cylinder expansion sleeve locking and positioning fixture according to claim 4, characterized in that, The clamping arc surface on the upper part of the clamping plate (10) is covered with an anti-slip pad.

6. The hydraulic cylinder expansion sleeve locking and positioning fixture according to claim 5, characterized in that, The central axis of the circular clamping space formed after the two clamps (10) come into contact is on the same vertical line as the central symmetrical point between the two central rings (3).

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