A device for detecting the static balance of an impeller

Abstract

The utility model relates to mechanical detection equipment technical field, concretely relates to a kind of impeller static balance detection device;The device includes base, adjusting assembly, two support frames, upper rotary frame and locking mechanism;The adjusting assembly includes the two-way screw rod of rotation installation in base and the connecting block of screw thread cooperation, connecting block bottom is equipped with the pulley that can roll in base sliding slot, support frame is fixed on connecting block and is equipped with support wheel;The upper rotary frame is hinged to support frame, and the upper rotary frame is equipped with press wheel and lock catch;The locking mechanism is located in support frame, and the support frame is opened lock hole;Locking mechanism includes spring, turntable, the lock hook of being fixed on turntable, handle and the connecting rod of being hinged to handle and turntable.The utility model realizes the stable adjustment of interval by adjusting assembly, and it is strong in versatility;And by the cooperation of upper rotary frame and locking mechanism, the stable clamping and quick locking of workpiece are realized, the detection accuracy is guaranteed, and operation is safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing equipment technology, and in particular to an impeller static balance testing device. Background Technology

[0002] As a high-speed rotating component, the impeller inevitably experiences mass imbalance during manufacturing and maintenance due to uneven material distribution or processing errors. This imbalance leads to severe vibrations, noise generation, and accelerated wear of critical components such as bearings during equipment operation, seriously affecting equipment performance and service life. Therefore, static balancing testing of the impeller is a crucial step in ensuring product quality.

[0003] Existing static balance testing devices typically employ the principle of mounting the impeller to be tested on a balancing mandrel, which is then placed on two low-friction support wheels or knife-edge supports. Under the influence of gravity, the impeller's center of gravity, i.e., the heaviest point, will automatically rotate to its lowest point, thereby determining the location and magnitude of the imbalance.

[0004] However, the above-mentioned testing method has significant shortcomings in actual operation. Since the impeller mandrel is only supported by gravity, this open placement method is highly unstable. During workpiece placement or testing, the mandrel is prone to radial runout or axial movement. This not only severely interferes with the precise positioning of the most critical point, leading to a decrease in testing accuracy, but also makes it difficult to effectively fix the workpiece during subsequent balancing operations such as counterweighting or weight removal, causing great inconvenience and safety hazards to the calibration work.

[0005] Therefore, this utility model proposes an impeller static balance detection device to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an impeller static balance testing device, which aims to improve the problems of poor compatibility of impeller testing devices with workpieces of different specifications and low accuracy caused by the easy movement of workpieces during the testing process.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an impeller static balance testing device, comprising: a base, an adjustment component, two support frames and a support wheel disposed on the top of the support frames; and an upper rotating frame and a locking mechanism.

[0008] The adjustment assembly includes a bidirectional lead screw rotatably mounted on the base, and connecting blocks threaded to both ends of the bidirectional lead screw. The two support frames are fixedly connected above the connecting blocks, and a support wheel is rotatably mounted on the top of each support frame.

[0009] Furthermore, one end of the upper rotating frame is hinged to the support frame, and a pressure roller and a latch are fixed on the lower surface of the upper rotating frame.

[0010] The support frame is equipped with a locking mechanism, and the top of the support frame has a locking hole for the latch to pass through. The locking mechanism includes a turntable, a locking hook, a handle, and a connecting rod. The turntable is rotatably disposed inside the support frame. The locking hook is fixedly connected to the turntable, and the position of the locking hook corresponds to the locking hole to engage the latch. The handle is disposed on the outside of the support frame. The two ends of the connecting rod are pivotally connected to the handle and the turntable, respectively.

[0011] Preferably, one end of the bidirectional lead screw of the adjusting assembly is fixedly connected to a handle for driving its rotation.

[0012] Preferably, the upper surface of the base is provided with a groove for the connecting block to slide.

[0013] Preferably, the bottom of the connecting block of the adjusting assembly is rotatably connected to a pulley that can roll in the groove.

[0014] Preferably, a spring is connected between the locking hook of the locking mechanism and the inner wall of the support frame.

[0015] Preferably, the pressure roller of the upper rotating frame is positioned opposite to the support roller in the vertical direction.

[0016] Preferably, the two ends of the bidirectional lead screw of the adjusting assembly are a left-hand threaded section and a right-hand threaded section, respectively.

[0017] Preferably, the spring is used to apply tension to the locking hook to keep it engaged with the latch.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, by setting an adjustment component, the two connecting blocks are driven to move synchronously by rotating a bidirectional lead screw, and a pulley is set at the bottom of the connecting block to make it roll in the groove of the base. This solves the problems of poor compatibility of the detection device with workpieces of different lengths and specifications, inconvenient adjustment and easy jamming in the prior art. It achieves the technical effect of strong device versatility, smooth and stable spacing adjustment and labor-saving operation.

[0020] 2. In this utility model, by setting an upper rotating frame that can be pressed downwards, the pressure roller on it cooperates with the support roller on the support frame to clamp the workpiece, and a locking mechanism with automatic spring engagement and handle linkage unlocking is used to fix the upper rotating frame. This solves the problems in the prior art where the workpiece is prone to shifting during inspection, resulting in low accuracy, and the clamping and locking operation is cumbersome and inconvenient. It achieves the technical effects of stable workpiece clamping, high inspection accuracy, quick locking and convenient unlocking, and safe and reliable operation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an impeller static balance testing device proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the support wheel structure of an impeller static balance testing device proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the upper rotating frame structure of the impeller static balance testing device proposed in this utility model;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the adjustment component of an impeller static balance detection device proposed in this utility model.

[0026] Legend:

[0027] 1. Base; 2. Support frame; 3. Upper rotating frame; 4. Support wheel; 5. Pressure wheel; 6. Locking mechanism; 601. Lock; 602. Lock hole; 603. Lock hook; 604. Spring; 605. Handle; 606. Turntable; 607. Connecting rod; 7. Adjustment component; 701. Two-way lead screw; 702. Handle; 703. Connecting block; 704. Slide groove; 705. Pulley. Detailed Implementation

[0028] 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.

[0029] Example:

[0030] Please refer to Figures 1 to 5This utility model provides an impeller static balance testing device, which aims to solve the problems of poor compatibility of impeller testing devices with workpieces of different specifications and low accuracy caused by the easy movement of workpieces during the testing process.

[0031] The impeller static balance testing device includes a base 1, an adjustment assembly 7 and two support frames 2 disposed above the base 1; the base 1 serves as the mounting base for the entire device, providing stable support for other components; the adjustment assembly 7 is used to drive the two support frames 2 to move synchronously on the base 1 to adjust the spacing; the support frames 2 are used to support the impeller to be tested, and are provided with an upper rotating frame 3 and a locking mechanism 6 for pressing and fixing the impeller;

[0032] The adjusting assembly 7 includes a bidirectional lead screw 701 rotatably mounted on the base 1, and connecting blocks 703 threadedly fitted to both ends of the bidirectional lead screw 701. A handle 702 is fixedly connected to one end of the bidirectional lead screw 701, and rotating the handle 702 can drive the bidirectional lead screw 701 to rotate. The two ends of the bidirectional lead screw 701 are a left-hand thread section and a right-hand thread section, respectively, so that when the bidirectional lead screw 701 rotates, it can drive the two connecting blocks 703 to move synchronously towards or away from each other.

[0033] The upper surface of the base 1 is provided with a slide groove 704 for the connecting block 703 to slide. The bottom of the connecting block 703 is rotatably connected with a pulley 705 that can roll in the slide groove 704. The pulley 705 makes the movement of the connecting block 703 in the slide groove 704 more stable and smooth.

[0034] The bottom of the two support frames 2 are respectively fixedly connected to the top of the two connecting blocks 703, so that the support frames 2 can move synchronously with the movement of the connecting blocks 703; the top of each support frame 2 is rotatably mounted with a support wheel 4, which is used to directly support the balance spindle with the impeller and enable it to roll freely with low friction.

[0035] One end of the upper rotating frame 3 is connected to the support frame 2 by a hinge, so that the upper rotating frame 3 can rotate around the hinge point to lift up or press down; the lower surface of the upper rotating frame 3 is fixed with a pressure roller 5 and a lock 601; the position of the pressure roller 5 is vertically opposite to the position of the support roller 4 at the top of the support frame 2, and when the upper rotating frame 3 is pressed down, the pressure roller 5 and the support roller 4 together clamp the spindle.

[0036] Meanwhile, a locking mechanism 6 and a lock hole 602 for the latch 601 to pass through are correspondingly provided on the support frame 2; the locking mechanism 6 is located in the internal cavity of the support frame 2, and the locking mechanism 6 includes a turntable 606, a lock hook 603, a handle 605, a connecting rod 607 and a spring 604; the turntable 606 is rotatably located inside the support frame 2.

[0037] The locking hook 603 is fixedly connected to the turntable 606. The position of the locking hook 603 corresponds to the lock hole 602 so that when the latch 601 passes through the lock hole 602, the locking hook 603 can hook the latch 601. The handle 605 is set on the outside of the support frame 2 for unlocking.

[0038] The two ends of the connecting rod 607 are pivotally connected to the handle 605 and the turntable 606, respectively, to transmit the pulling action of the handle 605 to the turntable 606, causing it to rotate; the spring 604 is connected between the locking hook 603 and the inner wall of the support frame 2, and the spring 604 applies a pulling force to the locking hook 603, so that the locking hook 603 is normally kept in the ready-to-engage position; this structure in which the upper rotating frame 3 and the support frame 2 cooperate through the locking mechanism 6 ensures that the workpiece is stably fixed during the inspection process, avoiding movement and jumping.

[0039] In a preferred embodiment, the adjustment assembly 7 includes a handle 702, which is fixedly connected to one end of the bidirectional lead screw 701. The operation of the handle 702 can conveniently drive the bidirectional lead screw 701 to rotate.

[0040] In another preferred embodiment, a groove 704 is provided on the upper surface of the base 1 along the moving path of the connecting block 703, and the connecting block 703 is disposed in the groove 704 and slides along the length direction of the groove 704.

[0041] Based on the above-described embodiment of opening the slide groove 704, the bottom of the connecting block 703 of the adjusting component 7 is rotatably connected to a pulley 705. The pulley 705 is accommodated in the slide groove 704 and can roll on the bottom surface of the slide groove 704. The setting of the pulley 705 transforms sliding friction into rolling friction, making the movement adjustment of the connecting block 703 smoother and less strenuous.

[0042] In another preferred embodiment, the two ends of the spring 604 of the locking mechanism 6 are respectively connected to the inner wall of the locking hook 603 and the support frame 2, and the spring 604 provides the locking hook 603 with a pulling force to keep it locked.

[0043] As another preferred embodiment, the pressure roller 5 of the upper rotating frame 3 and the support roller 4 of the support frame 2 are positioned opposite each other in the vertical direction. This relative arrangement ensures that when the upper rotating frame 3 is pressed down, the pressure roller 5 and the support roller 4 can clamp the mandrel from both the top and bottom directions to form a stable V-shaped positioning.

[0044] As another preferred embodiment, the two ends of the bidirectional lead screw 701 of the adjusting component 7 are a left-hand threaded section and a right-hand threaded section, respectively. When the bidirectional lead screw 701 rotates, the two threaded connecting blocks 703 can thus achieve synchronous movement towards or away from each other.

[0045] Based on the above-described embodiment with spring 604, spring 604 applies a continuous pulling force to the locking hook 603, so that the locking hook 603 automatically hooks onto the lock 601 and maintains a secure engagement between the two, preventing the upper rotating frame 3 from being lifted accidentally.

[0046] Working principle: Before testing, the distance between the two support frames 2 needs to be adjusted according to the length of the workpiece to be tested. The operator turns the handle 702, which drives the double-acting screw 701 to rotate. Since the two ends of the double-acting screw 701 are left-hand threaded section and right-hand threaded section respectively, the two threaded connecting blocks 703 will move towards or away from each other synchronously along the slide groove 704. The pulley 705 set at the bottom of the connecting block 703 rolls in the slide groove 704, making the movement process smooth and effortless. As the connecting block 703 moves, the support frame 2 fixedly connected above the connecting block 703 also moves synchronously to the appropriate position.

[0047] After the spacing is adjusted, place the mandrel with the impeller on the support wheels 4 at the top of the two support frames 2, and then press down on the upper rotating frame 3. The upper rotating frame 3 rotates around the hinge point, and the pressure roller 5 on the lower surface of the upper rotating frame 3 moves down and finally presses against the mandrel. The pressure roller 5 and the support wheel 4 below together form a stable clamping structure. At the same time as pressing down, the latch 601 of the upper rotating frame 3 passes through the locking hole 602 at the top of the support frame 2 and enters the interior of the support frame 2. At this time, under the tension of the spring 604, the locking hook 603 automatically engages with the latch 601, completing the locking of the upper rotating frame 3. The workpiece is firmly fixed for subsequent static balance testing and correction operations.

[0048] After the inspection and calibration are completed, pull the handle 605 located on the outside of the support frame 2 outward. The handle 605 drives the turntable 606 inside the support frame 2 to rotate through the connecting rod 607. The locking hook 603 fixed on the turntable 606 rotates accordingly and overcomes the tension of the spring 604, and finally disengages from the lock 601 to unlock. After unlocking, lift the upper rotating frame 3 upward to easily remove the workpiece that has been balanced and calibrated.

[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for detecting the static balance of an impeller, comprising: Base (1); Adjustment assembly (7), the adjustment assembly (7) includes a bidirectional lead screw (701) rotatably mounted on the base (1), and connecting blocks (703) threaded to both ends of the bidirectional lead screw (701); Two support frames (2), each support frame (2) is fixedly connected to the top of the connecting block (703), and each support frame (2) is rotatably mounted with a support wheel (4) on its top, characterized in that; The device also includes an upper rotating frame (3), one end of which is hinged to the support frame (2), and a pressure wheel (5) and a latch (601) are fixed on the lower surface of the upper rotating frame (3). Furthermore, the support frame (2) is provided with a locking mechanism (6), and the top of the support frame (2) has a locking hole (602) for the latch (601) to pass through; the locking mechanism (6) includes: A turntable (606) is rotatably disposed inside the support frame (2); A locking hook (603) is fixedly connected to the turntable (606), and the position of the locking hook (603) corresponds to the locking hole (602) to engage the lock buckle (601). A handle (605) is provided on the outside of the support frame (2); And a connecting rod (607), the two ends of which are pivotally connected to the handle (605) and the turntable (606), respectively.

2. The impeller static balance testing device according to claim 1, characterized in that, One end of the bidirectional lead screw (701) of the adjustment assembly (7) is fixedly connected to a handle (702) for driving its rotation.

3. The impeller static balance testing device according to claim 1, characterized in that, The upper surface of the base (1) is provided with a groove (704) for the connecting block (703) to slide.

4. The impeller static balance testing device according to claim 3, characterized in that, The bottom of the connecting block (703) of the adjusting assembly (7) is rotatably connected to a pulley (705) that can roll in the slide (704).

5. The impeller static balance testing device according to claim 1, characterized in that, A spring (604) is connected between the locking hook (603) of the locking mechanism (6) and the inner wall of the support frame (2).

6. The impeller static balance testing device according to claim 1, characterized in that, The pressure roller (5) of the upper rotating frame (3) is positioned opposite to the support roller (4) in the vertical direction.

7. The impeller static balance testing device according to claim 1, characterized in that, The two ends of the bidirectional lead screw (701) of the adjustment assembly (7) are a left-hand threaded section and a right-hand threaded section, respectively.

8. The impeller static balance testing device according to claim 5, characterized in that, The spring (604) is used to apply tension to the hook (603) to keep it engaged with the latch (601).

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