A locking mechanism for dynamic balancing test equipment

Abstract

The two ends of the locking screw rod and the guide light rod are coaxially installed in the two groups of fixing through holes, and the two ends of the locking screw rod and the guide light rod are coaxially installed in the two groups of fixing through holes. One side of the locking screw rod fixing seat is provided with a handle fixing block connected with the locking screw rod via a pin shaft, and a handle is installed on the handle fixing block. The two ends of the lower side of the swing frame fixing block are sleeved on the locking screw rod, and locking screws are provided at the two ends of the lower side of the swing frame fixing block. A left block and a right block screwed on the locking screw rod are provided between the two locking screws, and the lower ends of the left block and the right block are both sleeved on the guide light rod, and the locking screw rod is provided with a left-handed thread screwed with the left block and a right-handed thread screwed with the right block. The structure has the characteristics of small size, light weight and reliable locking.

Description

Technical Field

[0001] The invention relates to a locking mechanism for dynamic balance testing equipment. Background Art

[0002] During the machining process in the factory, the rotor mass distribution will be uneven due to uneven material, poor machine tool performance or manual assembly errors, resulting in imbalance. These imbalances will generate centrifugal force as the rotor rotates, causing the machine to vibrate and generate noise, reduce the machine's operating accuracy, and even cause serious accidents. Therefore, it is extremely important to perform dynamic balancing tests on the rotor part of the machine and correct its imbalance.

[0003] Since the dynamic balancing test device needs to frequently disassemble and assemble the rotor to be tested during use, it is very likely that the swing frame of the dynamic balancing test device will be excessively deflected due to operator operation problems, causing deformation of the supporting spring rod, reducing the accuracy of the equipment, and even damaging the dynamic balancing test device. Therefore, it is urgent to design a locking mechanism to achieve reliable locking during the disassembly and assembly of the rotor to be tested and ensure the measurement accuracy of the dynamic balancing equipment.

[0004] The locking mechanism used in traditional turntable equipment generally achieves locking at certain specific positions by the cooperation of a locking pin assembly and a locking pin seat. This locking scheme is simple and reliable, but it is only suitable for limiting the freedom of a certain rotation direction of the turntable. Since the swing frame structure of the dynamic balancing test equipment is usually supported by a spring rod or a spring plate, it has multi-directional freedom, and conventional locking mechanisms are difficult to use on dynamic balancing test equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a locking mechanism for dynamic balancing test equipment to solve the problems in the above-mentioned background technology, which has the characteristics of small size, light weight and reliable locking.

[0006] The technical solution adopted to achieve the above-mentioned purpose is a locking mechanism for a dynamic balancing test device, comprising a swing frame fixing block, a locking screw, a guide light rod and a U-shaped swing frame seat, two coaxial groups of fixing through holes are provided on both sides of the swing frame seat, and side covers of the swing frame seat and locking screw fixing seats are respectively fixed at the fixing through holes on both sides of the swing frame seat, and both ends of the locking screw and the guide light rod are coaxially installed in the two groups of fixing through holes, and one side of the locking screw fixing seat is provided with a handle fixing block connected to the locking screw via a distribution shaft, and a handle fixing block is installed on the handle fixing block. There is a handle, and the two ends of the lower side of the swing frame fixing block are mounted on the locking screw rod, and locking screws are provided at the two ends of the lower side of the swing frame fixing block. A left block and a right block screwed on the locking screw rod are provided between the two locking screws, and the lower ends of the left block and the right block are both mounted on the guide light rod. The locking screw rod is provided with a left-handed thread screwed with the left block and a right-handed thread screwed with the right block. The two ends of the swing frame fixing block are fixed with V-groove fixing blocks by hexagonal cylindrical head screws, and two spring rods are connected in the V-groove fixing block.

[0007] Furthermore, nuts are installed at both ends of the locking screw; the end of the locking screw adopts a spherical end surface structure; one end of the locking screw is provided with a through hole, and the other end is provided with an "I"-shaped groove, which can conveniently adjust the installation position of the locking screw.

[0008] Furthermore, one end of the guide light rod contacts the inner side of the side cover of the swing frame seat, and the other end contacts the inner side of the flange of the locking screw fixing seat. The locking screw fixing seat is fixed to the swing frame seat via a slotted countersunk screw.

[0009] Beneficial Effects

[0010] Compared with the prior art, the present invention has the following advantages.

[0011] 1. The present invention realizes the locking of the swing frame fixing seat through the action force between the left stopper, the right stopper and the locking screw. Since the action forces between the left stopper, the right stopper and the locking screw are equal in magnitude and opposite in direction, it can effectively prevent the swing frame fixing seat from swinging in a certain direction during locking, causing the spring rod to be completely deformed, thereby affecting the accuracy of the dynamic balance test equipment;

[0012] 2. The present invention can effectively control the distance between the left stopper, the right stopper and the locking screw by adjusting the positions of the locking screw and the left stopper, the right stopper, and ensure that the left stopper, the right stopper and the locking screw are in contact at the same time;

[0013] 3. The locking screw is provided with a left-handed thread and a right-handed thread, which are connected with a left stopper provided with a left-handed thread and a right stopper provided with a right-handed thread, so that when the handle is rotated in the same direction, the left stopper and the right stopper can move in opposite directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a front cross-sectional view of the structure of the present invention;

[0016] Figure 2 is a bottom-up cross-sectional view of the structure of the present invention;

[0017] Figure 3 It is a three-dimensional diagram of the structure of the present invention;

[0018] Figure 4 is a partial cross-sectional view of the locking screw in the present invention;

[0019] Figure 5 It is a partial cross-sectional view of the locking screw in the present invention;

[0020] As shown in the figure: 1. Swing frame seat, 2. Spring rod, 3. Locking screw, 4. Guide light rod, 5. Swing frame seat side cover, 6. Hexagon socket head screw, 7. Swing frame fixing block, 8. Left stopper, 9. Right stopper, 10. V-groove fixing block, 11. Locking screw fixing seat, 12. Slotted countersunk screw, 13. Handle, 14. Pin, 15. Handle fixing block, 16. Nut, 17. Locking screw. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] A locking mechanism for a dynamic balancing test device comprises a swing frame fixing block 7, a locking screw rod 3, a guide light rod 4 and a U-shaped swing frame seat 1, such as Figure 1-Figure 3 As shown, two groups of coaxial fixing through holes are provided on both sides of the swing frame seat 1, and the swing frame seat side cover plates 5 and locking screw fixing seats 11 are respectively fixed at the fixing through holes on both sides of the swing frame seat 1, and the two ends of the locking screw 3 and the guide light rod 4 are coaxially installed in the two groups of fixing through holes, and one side of the locking screw fixing seat 11 is provided with a handle fixing block 15 connected to the locking screw 3 via a pin 14, and a handle 13 is installed on the handle fixing block 15, and the two ends of the lower side of the swing frame fixing block 7 are sleeved on the locking screw 3, and the swing frame fixing Both ends of the lower side of the fixed block 7 are provided with locking screws 17, and a left stopper 8 and a right stopper 9 screwed on the locking screw 3 are provided between the two locking screws 17. The lower ends of the left stopper 8 and the right stopper 9 are both mounted on the guide light rod 4. The locking screw 3 is provided with a left-handed thread screwed with the left stopper 8 and a right-handed thread screwed with the right stopper 9. Both ends of the swing frame fixing block 7 are fixed with V-groove fixing blocks 10 via hexagon socket head screws 6, and two spring rods 2 are connected inside the V-groove fixing block 10.

[0023] Nuts 16 are installed at both ends of the locking screw 17; Figure 4 As shown, the end of the locking screw 17 adopts a spherical end surface structure; one end of the locking screw 17 is provided with a through hole, and the other end is provided with an "I"-shaped groove, which can conveniently adjust the installation position of the locking screw 17.

[0024] One end of the guide light rod 4 contacts the inner side of the swing frame seat side cover 5 , and the other end contacts the inner side of the flange of the locking screw fixing seat 11 . The locking screw fixing seat 11 is fixed to the swing frame seat 1 via a slotted countersunk screw 12 .

[0025] In the present invention, two groups of fixed through holes with high coaxiality requirements are provided on both sides of the swing frame seat 1, which are respectively used to install the locking screw 3 and the guide light rod 4; the locking screw fixing seat 11 is installed on the swing frame seat 1 by a slotted countersunk screw 12, and the handle 13 is installed on the handle fixing block 15 by a threaded connection; the handle fixing block 15 is connected to the locking screw 3 by a pin 14 to achieve axial positioning of the locking screw 3 and the handle fixing block 15; the locking screw 13 is installed with a left stopper 8 and a right stopper 9, and its rotational freedom is limited by the guide light rod 4; locking screws 17 for limiting are installed at both ends of the lower side of the swing frame fixing seat 7, which are used to achieve the locking of the dynamic balancing test equipment.

[0026] like Figure 5 As shown, the locking screw 3 is provided with a left-handed thread and a right-handed thread, which are respectively screwed with a left stopper 8 provided with an inner left-handed thread and a right stopper 9 provided with an inner right-handed thread; when the handle 13 is manually rotated in the locking direction, the left stopper 8 and the right stopper 9 respectively move to both sides until they contact the locking screws 17 at both ends, and the locking of the dynamic balancing test equipment is achieved through the action force between the stopper and the locking screw 17; when the handle 13 is manually rotated in the loosening direction, the left stopper 8 and the right stopper 9 move toward the middle until the dynamic balancing test equipment is completely disengaged.

[0027] The guide light rod 4 guides the left stopper 8 and the right stopper 9 in the locking mechanism. In order to prevent the axial movement of the guide light rod 4 from causing abnormal noise when the dynamic balancing test equipment is locked and disengaged, the flange surface of the locking screw fixing seat 11 and the side cover plate 5 of the swing frame seat should be used to limit its axial freedom.

[0028] In the specific implementation of the present invention, two groups of fixing through holes with high coaxiality requirements are provided on both sides of the swing frame seat 1, which are respectively used to install the locking screw 3 and the guide light rod 4; the locking screw fixing seat 11 is installed on the swing frame seat 1 through a slotted countersunk screw 12; the handle 13 is installed on the handle fixing block 15 by a threaded connection, and is connected to the locking screw 3 through a pin 14 to achieve axial positioning of the locking screw 3 and the handle fixing block 15; a 0.1mm gap is required between the handle fixing block 15 and the end face of the flange of the locking screw fixing seat 11 to ensure flexible rotation of the handle; the locking screw 13 is installed on the handle fixing block 15 A left-handed thread and a right-handed thread are provided, which are connected with a left stopper 8 provided with an inner left-handed thread and a right stopper 9 provided with an inner right-handed thread, so that when the handle is turned in the same direction, the left stopper 8 and the right stopper 9 move in opposite directions; locking screws 17 for limiting are symmetrically arranged at both ends of the lower side of the swing frame fixing seat 7, and when the locking screws 17 are in contact with the left stopper 8 and the right stopper 9 respectively, the swing frame fixing block 7 can be locked without deflection through two forces of equal size and opposite direction, which effectively prevents the deformation of the spring rod 2 caused by the deflection of the swing frame fixing block 7 and affects the accuracy of the equipment; A pair of nuts 16 are provided at both ends of the locking screw 17, which can conveniently adjust the position of the locking screw 17 and tighten the locking screw 17 to prevent the locking screw 17 from moving backward when subjected to the thrust of the block, thereby affecting the locking effect of the equipment; the end of the locking screw 17 adopts a spherical end surface design, which can effectively prevent it from damaging the end surfaces of the left and right block 8 and 9 when it contacts the left and right block 8, 9. One end of the locking screw 17 is provided with a through hole, and the other end is provided with an "I"-shaped groove, which can conveniently adjust the installation position of the locking screw 17. By adjusting the installation of the locking screw 17 and the left and right block 8, 9 The installed position can effectively control the distance between the left block 8, the right block 9 and the locking screw 17, ensuring that when the handle 13 is rotated, the left block 8, the right block 9 are in contact with the locking screw 17 at the same time; the guide light rod 4 and the left block 8, the right block 9 are matched with the hole clearance, which guides the left block 8, the right block 9, so that the left block 8, the right block 9 only has the freedom to move axially along the guide light rod 4; one end of the guide light rod 4 is in contact with the side cover plate 5 of the swing frame seat, and the other end is in contact with the flange of the locking screw fixing seat 11, so as to prevent the guide light rod 4 from axially jumping and causing abnormal noise of the dynamic balancing test equipment.

[0029] In the present invention, two sets of fixed through holes with high coaxiality are provided at both ends of the swing frame seat 1, which are used to install the locking screw 3 and the guide light rod 4. The locking screw 3 is provided with a section of left-handed thread and a section of right-handed thread, which are respectively used to install the left stopper 8 and the right stopper 9. The guide light rod 4 is matched with the left stopper 8 and the right stopper 9 through the hole gap, which guides the left stopper 8 and the right stopper 9. By rotating the handle 13, the left and right stops move to the left and right respectively. When the left and right stops move to contact the locking screw 17 installed on the swing frame fixing block 7, the swing frame fixing seat 7 is reliably locked by the action force between the stopper and the locking screw 17. The present invention has the advantages of small size, light weight and reliable locking.

Claims

1. A locking mechanism for a dynamic balancing test device, comprising a swing frame fixing block (7), a locking screw (3), a guide light rod (4) and a U-shaped swing frame seat (1), characterized in that: Two groups of coaxial fixing through holes are provided on both sides of the swing frame seat (1), and swing frame seat side cover plates (5) and locking screw fixing seats (11) are respectively fixed at the fixing through holes on both sides of the swing frame seat (1), and the two ends of the locking screw (3) and the guide light rod (4) are coaxially installed in the two groups of fixing through holes. One side of the locking screw fixing seat (11) is provided with a handle fixing block (15) connected to the locking screw (3) via a distribution shaft (14), and a handle (13) is installed on the handle fixing block (15). The two ends of the lower side of the swing frame fixing block (7) are sleeved on the locking screw (3), and the swing frame fixing block (7) The lower ends of the swing frame fixing block (7) are provided with locking screws (17), and a left stopper (8) and a right stopper (9) screwed on the locking screw (3) are provided between the two locking screws (17). The lower ends of the left stopper (8) and the right stopper (9) are both mounted on the guide light rod (4). The locking screw (3) is provided with a left-handed thread screwed with the left stopper (8) and a right-handed thread screwed with the right stopper (9). The two ends of the swing frame fixing block (7) are fixed with V-groove fixing blocks (10) by hexagon socket head screws (6), and two spring rods (2) are connected inside the V-groove fixing block (10).

2. The locking mechanism for a dynamic balancing test device according to claim 1, characterized in that: Nuts (16) are installed at both ends of the locking screw (17); the end of the locking screw (17) adopts a spherical end surface structure; one end of the locking screw (17) is provided with a through hole, and the other end is provided with an "I"-shaped groove, so that the installation position of the locking screw (17) can be easily adjusted.

3. The locking mechanism for a dynamic balancing test device according to claim 1, characterized in that: One end of the guide light rod (4) contacts the inner side of the swing frame seat side cover plate (5), and the other end contacts the inner side of the flange of the locking screw fixing seat (11). The locking screw fixing seat (11) is fixed to the swing frame seat (1) via a slotted countersunk screw (12).

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