An assembling tool for an electro-hydraulic actuator valve group

Abstract

The utility model discloses an assembly tool of electro -hydraulic actuator valve group, including the workstation that is equipped with on the frame, be equipped with assembly fixture subassembly on the workstation, the assembly fixture subassembly includes lifting rotation unit and clamping unit, and lifting rotation unit includes the lifting cylinder that is vertically equipped with on the workstation, and the telescopic end of lifting cylinder is rotatably connected with the object table, and the top surface of object table is provided with the round positioning recess, clamping unit includes the vertical frame that is vertically equipped with on the workstation, and vertical frame is located the rear side of lifting cylinder, and the top end of vertical frame is vertically equipped with clamping cylinder, and the telescopic end of clamping cylinder is downwardly through vertical frame top and is fixed with the slide, and the rotatable compression axle is connected on the slide, and compression axle and the coaxial arrangement of round positioning recess, the utility model has the advantages of time -saving and labour -saving, high assembly efficiency, avoid the oil way block to happen to knock, improve valve assembly quality etc.

Description

Technical Field

[0001] This utility model relates to the field of electro-hydraulic actuator assembly technology, specifically to an assembly fixture for an electro-hydraulic actuator valve assembly. Background Technology

[0002] Electro-hydraulic actuators (EHAs) work by converting electrical energy into hydraulic energy to achieve high-precision control of mechanical motion. They are widely used in aerospace, automated manufacturing equipment, and construction machinery. Figure 1-2 The electro-hydraulic actuator valve assembly shown includes components such as a manifold block, a plug, a relief valve, and an electromagnet. The top and bottom surfaces of the manifold block are respectively provided with stepped holes and connecting rings. During valve assembly, the plug, relief valve, and electromagnet need to be assembled on the three side walls of the manifold block. Most existing valve assembly methods involve placing the manifold block on a simple support and then assembling the plug, relief valve, and electromagnet on the three side walls of the manifold block by flipping and moving the manifold block. However, due to the large weight of the manifold block, the assembly is time-consuming and labor-intensive, the assembly efficiency is low, and the manifold block is prone to being bumped, affecting the assembly quality of the valve assembly. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an assembly fixture for an electro-hydraulic actuator valve assembly. The assembly is time-saving and labor-saving, with high assembly efficiency, avoids collisions between oil passage blocks, and improves the assembly quality of the valve assembly. It is also easy to disassemble and assemble, and can assemble and process valve assemblies of different models and sizes, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an assembly fixture for an electro-hydraulic actuator valve assembly, comprising a worktable mounted on a frame, an assembly fixture assembly comprising a lifting and rotating unit and a clamping unit, the lifting and rotating unit comprising a lifting cylinder vertically mounted on the worktable, the telescopic end of the lifting cylinder being rotatably connected to a platform, the top surface of the platform having a circular positioning groove; the clamping unit comprising a vertically mounted frame on the worktable, the frame being located behind the lifting cylinder, the top of the frame having a clamping cylinder vertically mounted on it, the telescopic end of the clamping cylinder passing downward through the top of the frame and fixedly mounted on a sliding plate, the sliding plate being connected to a rotatable clamping shaft, and the clamping shaft being coaxially arranged with the circular positioning groove.

[0005] Furthermore, the extension end of the lifting cylinder is fixedly provided with a flange seat, the top of the flange seat is provided with a lifting shaft, and the bottom end of the lifting shaft is provided with a flange that matches the flange seat. The lifting shaft is detachably and fixedly connected to the flange seat through the flange at its bottom end and bolts. The top of the lifting shaft is provided with a fixed seat, and the top surface of the fixed seat has a circular receiving groove coaxially arranged with the positioning groove. A bearing is fixedly installed in the circular receiving groove. The bottom end of the platform has a connecting protrusion that matches the inner ring of the bearing. The connecting protrusion at the bottom end of the platform is fixedly connected to the inner ring of the bearing. The circular receiving groove of the fixed seat also has bolt holes. The top of the lifting shaft has a threaded blind hole corresponding to the bolt holes. The lifting shaft is detachably and fixedly connected to the fixed seat through bolts.

[0006] Furthermore, a guide limit frame is fixedly installed on the worktable at the position corresponding to the lifting cylinder. The guide limit frame is an inverted U-shaped structure. A guide hole adapted to the lifting shaft is opened on the top plate of the guide limit frame, and the lifting shaft passes through the guide hole. The outer diameter of the flange at the bottom end of the lifting shaft is larger than the guide hole.

[0007] Furthermore, the clamping shaft includes a connecting shaft vertically mounted on the slide plate. The top and bottom ends of the connecting shaft are respectively provided with a threaded cam and a limiting cam, and the outer diameter of the threaded cam is smaller than the outer diameter of the connecting shaft, while the outer diameter of the threaded cam is larger than the outer diameter of the connecting shaft. The top end of the threaded cam passes through the slide plate and is threadedly connected to a locking nut. An upper bushing and a lower bushing are fitted on the connecting shaft. The lower outer edge of the inner side of the upper bushing has an arc-shaped groove 1, and the upper outer edge of the inner side of the lower bushing has an arc-shaped groove 2. The upper bushing and the lower bushing are detachably fixedly connected by bolts, and several steel balls are provided between the arc-shaped groove 1, the arc-shaped groove 2 and the outer wall of the connecting shaft. The bottom end of the bushing hole of the lower bushing is provided with a limiting hole that matches the limiting cam. The bottom end of the lower bushing is detachably fixedly connected to a bottom cover by bolts, and the bottom end of the limiting cam abuts against the bottom cover.

[0008] Furthermore, the upright frame is vertically provided with a slide rail, and the slide plate is slidably connected to the slide rail by a slider; a limiting plate is fixedly provided on the upright frame below the slide plate, and a vertically arranged limiting screw is threaded onto the limiting plate.

[0009] Furthermore, a shelf is fixedly installed on the workbench, and multiple storage boxes are provided on the shelf.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: The assembly fixture of this electro-hydraulic actuator valve group uses a lifting cylinder to raise the oil manifold block by a rotatable platform, and a clamping cylinder to press the top surface of the oil manifold block with a rotatable clamping shaft. The oil manifold block can rotate while being clamped by the platform and the clamping shaft, so the plug, overflow valve and electromagnet can be assembled on the three side walls of the oil manifold block in sequence. The assembly is time-saving and labor-saving, improves the assembly efficiency, avoids the oil manifold block from bumping, and improves the assembly quality of the valve group. The flange seat, lifting shaft and fixed seat are all detachably fixed by bolts, which is convenient for disassembly and assembly. The fixed seat and platform are replaceable, and valve groups of different models and sizes can be assembled and processed. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of an explosion of an existing electro-hydraulic actuator valve assembly. Figure 2 This is a schematic diagram of the bottom structure of the oil passage block in an existing electro-hydraulic actuator. Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of the structure above the workbench of this utility model; Figure 5 This is a schematic diagram of the assembly fixture assembly structure of this utility model; Figure 6 This is a cross-sectional view of the lifting and rotating unit of this utility model; Figure 7 This is a schematic diagram of the clamping unit structure of this utility model; Figure 8 This is a schematic diagram of the explosion of the clamping shaft of this utility model; Figure 9 This is a schematic diagram of the connecting shaft structure of this utility model; Figure 10 This is a schematic diagram of the upper bushing structure of this utility model; Figure 11 This is a schematic diagram of the lower bushing structure of this utility model; Figure 12 This is a sectional view of the clamping shaft of this utility model; Figure 13 This is a schematic diagram of the structure of this utility model in use.

[0012] In the diagram: 1. Frame; 2. Workbench; 3. Assembly fixture assembly; 31. Lifting and rotating unit; 311. Lifting cylinder; 312. Flange seat; 313. Lifting shaft; 314. Fixed seat; 315. Bearing; 316. Platform; 3161. Positioning groove; 317. Guide limit frame; 32. Clamping unit; 321. Stand; 322. Clamping cylinder; 323. Slide plate; 324. Slide rail; 325. Limiting plate; 326. 1. Limiting screw; 4. Clamping shaft; 41. Connecting shaft; 411. Threaded convex shaft; 412. Limiting convex shaft; 42. Locking nut; 43. Upper bushing; 431. Arc groove one; 44. Lower bushing; 441. Arc groove two; 45. Steel ball; 46. Bottom cover; 5. Shelf; 51. Storage box; 600. Oil passage block; 601. Connecting ring; 602. Stepped hole; 700. Plug; 800. Overflow valve; 900. Electromagnet. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0014] Please see Figure 3-5 This utility model provides a technical solution: an assembly fixture for an electro-hydraulic actuator valve group, including a workbench 2 on a frame 1, an assembly fixture assembly 3 on the workbench 2, the assembly fixture assembly 3 including a lifting and rotating unit 31 and a clamping unit 32, the lifting and rotating unit 31 including a lifting cylinder 311 vertically arranged on the workbench 2, and the telescopic end of the lifting cylinder 311 is rotatably connected to a platform 316; Please refer to the following: Figure 5-6The top surface of the platform 316 is provided with a circular positioning groove 3161; the platform 316 is used to support the oil circuit block 600, and the inner diameter of the positioning groove 3161 is adapted to the outer diameter of the connecting ring 601 of the oil circuit block 600; the telescopic end of the lifting cylinder 311 is fixedly provided with a flange seat 312, the top of the flange seat 312 is provided with a lifting shaft 313, and the bottom end of the lifting shaft 313 is provided with a flange that is adapted to the flange seat 312. The lifting shaft 313 is detachably and fixedly connected to the flange seat 312 through the flange at its bottom end and bolts; the top of the lifting shaft 313... The end is provided with a fixed seat 314, and the top surface of the fixed seat 314 has a circular receiving groove coaxially arranged with the positioning groove 3161. The bearing 315 is fixedly installed in the circular receiving groove. The bottom end of the platform 316 has a connecting protrusion adapted to the inner ring of the bearing 315. The connecting protrusion at the bottom end of the platform 316 is fixedly connected to the inner ring of the bearing 315. The circular receiving groove of the fixed seat 314 also has bolt holes. The top end of the lifting shaft 313 has a threaded blind hole corresponding to the bolt holes. The lifting shaft 313 is detachably fixedly connected to the fixed seat 314 by bolts. The workbench 2 is fixedly provided with a guide limit frame 317 at the position corresponding to the lifting cylinder 311. The guide limit frame 317 is an inverted U-shaped structure. The top plate of the guide limit frame 317 is provided with a guide hole that is compatible with the lifting shaft 313. The lifting shaft 313 passes through the guide hole, and the outer diameter of the flange at the bottom of the lifting shaft 313 is larger than the guide hole. Please refer to the following: Figure 5 and Figure 7 The clamping unit 32 includes a vertically mounted frame 321 on the workbench 2. The frame 321 is located behind the lifting cylinder 311. A clamping cylinder 322 is vertically mounted at the top of the frame 321. The telescopic end of the clamping cylinder 322 passes through the top of the frame 321 and is fixedly mounted on a sliding plate 323. A rotatable pressing shaft 4 is connected to the sliding plate 323, and the pressing shaft 4 is coaxially arranged with a circular positioning groove 3161. A slide rail 324 is vertically mounted on the frame 321, and the sliding plate 323 is slidably connected to the slide rail 324 by a slider. A limiting plate 325 is fixedly mounted on the frame 321 below the sliding plate 323, and a vertically mounted limiting screw 326 is threaded onto the limiting plate 325. Please refer to the following: Figure 8-12The clamping shaft 4 includes a connecting shaft 41 vertically mounted on the slide plate 323. The top and bottom ends of the connecting shaft 41 are respectively provided with a threaded cam 411 and a limiting cam 412. The outer diameter of the threaded cam 411 is smaller than the outer diameter of the connecting shaft 41, and the outer diameter of the threaded cam 411 is larger than the outer diameter of the connecting shaft 41. The top end of the threaded cam 411 passes through the slide plate 323 and is threadedly connected to a locking nut 42. An upper shaft sleeve 43 and a lower shaft sleeve 44 are fitted onto the connecting shaft 41. The lower outer edge of the inner side of the upper shaft sleeve 43 has an arc shape. The upper outer edge of the inner side of the lower bushing 44 is provided with an arc-shaped annular groove 431. The upper bushing 43 and the lower bushing 44 are detachably fixedly connected by bolts. Several steel balls 45 are provided between the arc-shaped annular groove 431, the arc-shaped annular groove 441 and the outer wall of the connecting shaft 41. The bottom end of the bushing hole of the lower bushing 44 is provided with a limiting hole that matches the limiting convex shaft 412. The bottom end of the lower bushing 44 is detachably fixedly connected to the bottom cover 46 by bolts, and the bottom end of the limiting convex shaft 412 abuts against the bottom cover 46.

[0015] Please refer to the following: Figure 13 In use: Place the hydraulic manifold 600 on the platform 316, and fit the connecting ring 601 of the hydraulic manifold 600 into the positioning groove 3161. Extend the lifting cylinder 311 to lift the platform 316 and the hydraulic manifold 600 to a certain height. Extend the clamping cylinder 322 to push the slide plate 323 downwards along the slide rail 324. The clamping shaft 4 descends and presses against the stepped surface of the stepped hole 602 at the top of the hydraulic manifold 600, thus clamping the hydraulic manifold 600. The stage 316 is rotatably connected to the fixed seat 314 via bearing 315, and the upper bushing 43 and lower bushing 44 are rotatably connected to the connecting shaft 41 via steel ball 45, so that the oil circuit block 600 can rotate in the state of being clamped by the stage 316 and the clamping shaft 4. Therefore, by rotating the stage 316, the oil circuit block 600 in the clamped state can be rotated horizontally, so that the screw plug 700, the overflow valve 800 and the electromagnet 900 can be assembled on the three side walls of the oil circuit block 600 in sequence. Furthermore, a shelf 5 is fixedly provided on the workbench 2, and multiple storage boxes 51 are provided on the shelf 5; various parts can be placed in categories through the multiple storage boxes 51 provided on the shelf 5.

[0016] The assembly fixture for the electro-hydraulic actuator valve assembly disclosed in this embodiment uses a lifting cylinder 311 to lift the rotatable platform 316 to raise the manifold block 600, and a clamping cylinder 322 to clamp the top surface of the manifold block 600 with a rotatable clamping shaft 4. The manifold block 600 can rotate while being clamped by the platform 316 and the clamping shaft 4, so the plug 700, the overflow valve 800, and the electromagnet 900 can be assembled sequentially on the three side walls of the manifold block 600, improving assembly efficiency, preventing the manifold block 600 from bumping, and improving the assembly quality of the valve assembly. The flange seat 312, the lifting shaft 313, and the fixed seat 314 are all detachably fixedly connected by bolts, making disassembly and assembly convenient. The fixed seat 314 and the platform 316 are replaceable, allowing for the assembly and processing of valve assemblies of different models and sizes. The clamping shaft 4 has a simple structure and is easy to disassemble and assemble.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assembly fixture for an electro-hydraulic actuator valve assembly, comprising a worktable mounted on a frame, and an assembly fixture assembly mounted on the worktable, characterized in that: The assembly fixture assembly includes a lifting and rotating unit and a clamping unit. The lifting and rotating unit includes a lifting cylinder vertically mounted on a worktable. The telescopic end of the lifting cylinder is rotatably connected to a platform. A circular positioning groove is provided on the top surface of the platform. The clamping unit includes a vertically mounted frame on the worktable. The frame is located behind the lifting cylinder. A clamping cylinder is vertically mounted at the top of the frame. The telescopic end of the clamping cylinder passes downward through the top of the frame and is fixedly mounted on a sliding plate. A rotatable clamping shaft is connected to the sliding plate, and the clamping shaft is coaxially arranged with the circular positioning groove.

2. The assembly fixture for an electro-hydraulic actuator valve assembly according to claim 1, characterized in that: The extension end of the lifting cylinder is fixedly equipped with a flange seat. The top of the flange seat is equipped with a lifting shaft, and the bottom of the lifting shaft is equipped with a flange that matches the flange seat. The lifting shaft is detachably and fixedly connected to the flange seat through the flange at its bottom end and bolts. The top of the lifting shaft is equipped with a fixed seat. The top surface of the fixed seat has a circular receiving groove coaxially arranged with the positioning groove. A bearing is fixedly installed in the circular receiving groove. The bottom of the platform has a connecting protrusion that matches the inner ring of the bearing. The connecting protrusion at the bottom of the platform is fixedly connected to the inner ring of the bearing. The circular receiving groove of the fixed seat also has bolt holes. The top of the lifting shaft has a threaded blind hole corresponding to the bolt holes. The lifting shaft is detachably and fixedly connected to the fixed seat through bolts.

3. The assembly fixture for an electro-hydraulic actuator valve assembly according to claim 1, characterized in that: A guide limit frame is fixedly installed on the workbench at the position corresponding to the lifting cylinder. The guide limit frame is an inverted U-shaped structure. A guide hole adapted to the lifting shaft is opened on the top plate of the guide limit frame, and the lifting shaft passes through the guide hole. The outer diameter of the flange at the bottom end of the lifting shaft is larger than the guide hole.

4. The assembly fixture for an electro-hydraulic actuator valve assembly according to claim 1, characterized in that: The clamping shaft includes a connecting shaft vertically mounted on the slide plate. The top and bottom ends of the connecting shaft are respectively provided with a threaded cam and a limiting cam, with the outer diameter of the threaded cam being smaller than the outer diameter of the connecting shaft, and the outer diameter of the threaded cam being larger than the outer diameter of the connecting shaft. The top end of the threaded cam passes through the slide plate and is threadedly connected to a locking nut. An upper bushing and a lower bushing are fitted onto the connecting shaft. An arc-shaped groove is formed on the lower outer edge of the inner side of the upper bushing, and an arc-shaped groove is formed on the upper outer edge of the inner side of the lower bushing. The upper bushing and the lower bushing are detachably and fixedly connected by bolts. Several steel balls are provided between the arc-shaped grooves and the outer wall of the connecting shaft. The bottom end of the bushing hole of the lower bushing is provided with a limiting hole adapted to the limiting cam. A bottom cover is detachably and fixedly connected to the bottom end of the lower bushing by bolts, and the bottom end of the limiting cam abuts against the bottom cover.

5. The assembly fixture for an electro-hydraulic actuator valve assembly according to claim 1, characterized in that: The upright frame is vertically equipped with a slide rail, and the slide plate is slidably connected to the slide rail via a slider; a limiting plate is fixedly installed on the upright frame below the slide plate, and a vertically arranged limiting screw is threaded onto the limiting plate.

6. The assembly fixture for an electro-hydraulic actuator valve assembly according to claim 1, characterized in that: The workbench is also equipped with a shelf, which has multiple storage boxes.

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