Tool clamp for large-scale vibration test
Multi-point clamping is achieved through hydraulically driven tooling fixtures, which solves the problem of loosening and falling off caused by vibration in vibration tests of traditional fixtures, improves the stability and adaptability of clamping, and extends the service life.
Patent Information
- Application Number
- CN202422538091.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-21
AI Technical Summary
Traditional fixtures produce metal fatigue due to vibration during vibration tests, resulting in a decrease in clamping force, loosening and falling off, and cannot meet the needs of large-scale vibration clamping.
Using hydraulically driven tool clamps, the first hydraulic cylinder and the second hydraulic cylinder are combined with the soft clamp and the rotating frame to achieve multi-point clamping of the test items, and the flow of hydraulic oil is controlled through the control valve to fix the clamping position to reduce hydraulic oil overflow.
Improves clamping tightness and stability, avoids loosening and falling off, extends service life, and enhances clamping convenience and adaptability.
Smart Images
Figure CN223179729U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of large-magnitude vibration test fixtures, and particularly relates to a tooling fixture for large-magnitude vibration tests. Background Technique
[0002] The reciprocating motion of an object or a particle relative to its equilibrium position is called vibration. Vibration is further divided into sinusoidal vibration, random vibration, composite vibration, scanning vibration, and fixed-frequency vibration. The main parameters describing vibration are: amplitude, velocity (vibration is further divided into acceleration and average velocity). Tests are conducted on physical objects or models of vibration systems on-site or in the laboratory. A vibration system is a mass-spring system excited by a vibration source, such as a machine, a structure or its components, an organism, etc. Vibration tests originated in the aerospace department and have now been extended to various industrial sectors such as power machinery, transportation, construction, as well as environmental protection and labor protection, and their applications are becoming increasingly widespread. Vibration tests include response measurement, determination of dynamic characteristic parameters, load identification, and vibration environment tests, etc.
[0003] During some vibration test processes, it is necessary to clamp and fix some test objects. Traditional fixtures are mostly mechanical structures, such as bolt clamping. Although this clamping method has the advantage of flexible operation, during vibration tests, metal fatigue occurs due to vibration, resulting in a decrease in clamping force, loosening, falling off, or even damage. In addition, when dealing with large-magnitude vibration clamping, it cannot meet the existing clamping needs, thus causing certain inconvenience in use. Based on this, a tooling fixture for large-magnitude vibration tests is proposed. Content of the Utility Model
[0004] The purpose of the utility model is to provide a tooling fixture for large-magnitude vibration tests to solve the problems raised in the above background technique.
[0005] To achieve the above object, the utility model provides the following technical solution: A fixture for large-scale vibration tests, including a support plate. A number of mounting holes are provided inside the support plate. An installation pad is fixedly installed at the bottom of the support plate. Two support rings are fixedly installed at the top of the support plate. A number of sliding grooves are provided inside both of the two support rings. A first hydraulic cylinder is movably installed inside the sliding groove. The input end of the first hydraulic cylinder is communicated with an oil delivery pipe 1. A control valve 1 is provided inside the oil delivery pipe 1. Sliding frames are fixedly sleeved on the outer sides of both ends of the first hydraulic cylinder. An adjusting bolt is threadedly penetrated through the top end of the sliding frame. A bearing seat is sleeved at the bottom of the adjusting bolt. A resilient telescopic frame is fixedly installed at the bottom of the bearing seat. A pin is fixedly installed at the bottom of the resilient telescopic frame. A number of positioning holes are provided at the top of both of the two support rings. A first clamping plate is fixedly installed at the output end of the first hydraulic cylinder. Soft clamping blocks are fixedly installed on the opposite sides of the first clamping plate. A rotating frame is rotatably installed at the top of the first clamping plate. A support frame is rotatably installed at the top of the rotating frame. A second hydraulic cylinder is fixedly installed at the middle part of the rotating frame. The input end of the second hydraulic cylinder is communicated with an oil delivery pipe 2. A control valve 2 is installed inside the oil delivery pipe 2. A second clamping plate is fixedly installed at the output end of the second hydraulic cylinder.
[0006] Preferably, the mounting holes are evenly distributed in a circle inside the support plate, and the installation pad is located on the opposite side of the mounting holes.
[0007] Preferably, the two support rings are sleeved with each other in a manner of a large circle and a small circle. The sliding grooves are evenly distributed in a circle inside the support rings. The two support rings and the support plate are concentric circles.
[0008] Preferably, the first hydraulic cylinder is slidably penetrated and installed inside the sliding groove. The sliding frame is slidably clamped on the outside of the support ring. The sliding frame is in the shape of an arc-shaped clamping plate, and the specification and size of the sliding frame are adapted to those of the support ring.
[0009] Preferably, the positioning holes are evenly distributed in a circle at the top of the support ring. The specification and size of the pin are adapted to those of the positioning hole. The specification and size of the resilient telescopic frame are adapted to those of the sliding frame.
[0010] Preferably, the support frame is fixedly installed on the back of the first clamping plate. The input ends of both the oil delivery pipe 2 and the oil delivery pipe 1 are flexible hoses.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: When this structure is in use, the user installs the support plate on the vibrating table through the mounting holes and mounting pads, connects the second oil pipeline and the first oil pipeline to the hydraulic oil power equipment, places the test item to be clamped inside the support plate, and drives the first clamping plate and the soft clamping block to clamp outside the object by extending the first hydraulic cylinder. Then rotate the rotating frame to rotate the second hydraulic cylinder to the working position and control the second hydraulic cylinder to extend, so that the second clamping plate clamps outside the object. After clamping, close the control valve 1 and the control valve 2, so as to fix the lengths of the first hydraulic cylinder and the second hydraulic cylinder, reduce the overflow of hydraulic oil, fix the clamping operation, the overall clamping operation is convenient, and it can effectively cope with the vibrating clamping environment, reduce vibration loss, ensure the tightness of clamping, avoid loosening and falling off, and effectively extend the service life;
[0012] When clamping objects with different shapes, rotate the first hydraulic cylinder to slide inside the sliding groove, and the sliding frame slides outside the support ring to adjust the clamping position of the first hydraulic cylinder. Then rotate the adjusting bolt to make the bearing seat and the elastic telescopic frame move downward, so that the pin column is inserted into the positioning hole to fix the sliding frame and the first hydraulic cylinder at the required position. Connect the required first hydraulic cylinder to the first oil pipeline, extend the first hydraulic cylinder at the appropriate position, and clamp the object, which increases the convenience and adaptability of clamping and is convenient for adjustment and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a front view three-dimensional external structure schematic diagram of the present utility model.
[0014] Figure 2 It is a rear view and upward view three-dimensional external structure schematic diagram of the present utility model.
[0015] Figure 3 It is a right view sectional structure schematic diagram of the present utility model.
[0016] Figure 4 For the present utility model Figure 3 The enlarged structure schematic diagram at A.
[0017] In the figure: 1, support plate; 2, mounting hole; 3, support ring; 4, sliding groove; 5, positioning hole; 6, first hydraulic cylinder; 7, first oil pipeline; 8, control valve 1; 9, first clamping plate; 10, soft clamping block; 11, sliding frame; 12, support frame; 13, rotating frame; 14, second hydraulic cylinder; 15, second clamping plate; 16, second oil pipeline; 17, control valve 2; 18, mounting pad; 19, adjusting bolt; 20, elastic telescopic frame; 21, bearing seat; 22, pin column. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0019] Please refer to Figures 1-4 , the present invention provides a technical solution: a fixture for a large-scale vibration test, including a support plate 1. A plurality of mounting holes 2 are provided inside the support plate 1. An installation pad 18 is fixedly installed at the bottom of the support plate 1. Two support rings 3 are fixedly installed at the top of the support plate 1. A plurality of sliding grooves 4 are provided inside both support rings 3. A first hydraulic cylinder 6 is movably installed inside the sliding groove 4. The input end of the first hydraulic cylinder 6 is communicated with an oil delivery pipe 7. A control valve 8 is provided inside the oil delivery pipe 7. Sliding frames 11 are fixedly sleeved on the outer sides of both ends of the first hydraulic cylinder 6. An adjusting bolt 19 is threadedly penetrated through the top end of the sliding frame 11. A bearing seat 21 is sleeved at the bottom of the adjusting bolt 19. An elastic telescopic frame 20 is fixedly installed at the bottom of the bearing seat 21. A pin 22 is fixedly installed at the bottom of the elastic telescopic frame 20. A plurality of positioning holes 5 are provided at the top of both support rings 3. The output end of the first hydraulic cylinder 6 is fixedly installed with a first clamping plate 9. Soft clamping blocks 10 are fixedly installed on the opposite sides of the first clamping plate 9. A rotating frame 13 is rotatably installed at the top of the first clamping plate 9. A support frame 12 is rotatably installed at the top of the rotating frame 13. A second hydraulic cylinder 14 is fixedly installed in the middle of the rotating frame 13. The input end of the second hydraulic cylinder 14 is communicated with an oil delivery pipe 16. A control valve 17 is installed inside the oil delivery pipe 16. The output end of the second hydraulic cylinder 14 is fixedly installed with a second clamping plate 15.
[0020] The working principle of the above technical solution: During use, the user installs the support plate 1 on the vibration table through the mounting holes 2 and the installation pad 18, and connects the oil delivery pipe 16 and the oil delivery pipe 7 to a hydraulic oil power device. Place the test item to be clamped inside the support plate 1, and drive the first clamping plate 9 and the soft clamping blocks 10 to clamp on the outside of the object by extending the first hydraulic cylinder 6. Then rotate the rotating frame 13 to rotate the second hydraulic cylinder 14 to the working position, and control the second hydraulic cylinder 14 to extend, so that the second clamping plate 15 clamps on the outside of the object. After clamping, close the control valve 8 and the control valve 17, so as to fix the lengths of the first hydraulic cylinder 6 and the second hydraulic cylinder 14, and reduce the overflow of hydraulic oil, thereby fixing the clamping operation. The overall clamping operation is convenient, and it can effectively cope with the vibration clamping environment, reduce vibration loss, ensure the tightness of clamping, avoid loosening and falling off, and effectively extend the service life.
[0021] In another embodiment, such asFigures 1-4 As shown, the mounting holes 2 are evenly distributed in a circle inside the support plate 1, and the mounting pads 18 are located on the opposite sides of the mounting holes 2.
[0022] The mounting holes 2 and the mounting pads 18 facilitate the installation of the support plate 1 at the position of the vibration table, making it convenient for installation and use, and promoting the stable installation of the tooling.
[0023] In another embodiment, as Figures 1-4 shown, two support rings 3 are sleeved in a distribution of large and small circles, and the sliding grooves 4 are evenly distributed in a circle inside the support rings 3. The two support rings 3 and the support plate 1 are concentric circles.
[0024] The support rings 3 are distributed in an inner and outer circular sleeve pattern, all being concentric circles. And the sliding frame 11 is an arc-shaped clamping member that fits against the inner and outer walls of the support rings 3. When the first hydraulic cylinders 6 are limited in rotation, the inner ends and the outer ends maintain the same rotation angle position, and the angular velocity adjustment position is limited, so that the multiple first hydraulic cylinders 6 always point to the center of the circle during adjustment, increasing the use effect of the structure. The position of the first hydraulic cylinders 6 is limited by the sliding grooves 4, and the number of the sliding grooves 4 and the first hydraulic cylinders 6 determines different tooling clamps for different objects, facilitating the production of tooling fixtures of different specifications and facilitating the use for different requirements.
[0025] In another embodiment, as Figures 1-4 shown, the first hydraulic cylinders 6 slide through and are installed inside the sliding grooves 4, and the sliding frames 11 slide and clamp on the outside of the support rings 3. The sliding frames 11 are in the shape of arc-shaped clamping plates, and the specification dimensions of the sliding frames 11 are adapted to the specification dimensions of the support rings 3.
[0026] Through the provided sliding grooves 4 and sliding frames 11, when clamping objects of different shapes, rotate the first hydraulic cylinders 6 to slide inside the sliding grooves 4, and the sliding frames 11 slide on the outside of the support rings 3 to adjust the clamping position of the first hydraulic cylinders 6. Then, by rotating the adjusting bolts 19, the bearing seats 21 and the elastic telescopic frames 20 are moved downward, so that the pin shafts 22 are inserted into the positioning holes 5, fixing the sliding frames 11 and the first hydraulic cylinders 6 at the required positions. Connect the appropriate first hydraulic cylinders 6 to the first oil pipelines 7, so that the first hydraulic cylinders 6 at the appropriate positions extend and clamp the object, increasing the convenience and adaptability of clamping and facilitating the adjustment and use.
[0027] In another embodiment, as Figures 1-4 shown, the positioning holes 5 are evenly distributed in a circle on the top of the support rings 3. The specification dimensions of the pin shafts 22 are adapted to the specification dimensions of the positioning holes 5, and the specification dimensions of the elastic telescopic frames 20 are adapted to the specification dimensions of the sliding frames 11.
[0028] The positioning hole 5 serves as the sliding limit for the sliding frame 11 and the first hydraulic cylinder 6. When the adjusting bolt 19 rotates and moves downward, it causes the bearing seat 21 and the elastic telescopic frame 20 to move downward, and the pin 22 is inserted into the positioning hole 5. The elastic force of the elastic telescopic frame 20 keeps the pin 22 inside the positioning hole 5, reducing detachment and facilitating the stable position of the structure.
[0029] In another embodiment, as Figures 1-4 shown, the support frame 12 is fixedly installed on the back of the first clamping plate 9, and the input ends of the second oil pipeline 16 and the first oil pipeline 7 are both hoses.
[0030] The support frame 12 provides support for the rotating frame 13 and the second hydraulic cylinder 14, and the rotating frame 13 provides rotational support for the second hydraulic cylinder 14, facilitating the rotation of the rotating frame 13 as needed to enable the second hydraulic cylinder 14 to adjust the clamping position. When the hose ends of the second oil pipeline 16 and the first oil pipeline 7 input hydraulic oil, vibration conduction is reduced, and vibration conduction to the pipeline is reduced, preventing the hydraulic oil output device at the far end from vibrating and extending the oil pipeline to protect the oil pumping equipment.
[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An industrial fixture for large-scale vibration tests, comprising a support plate (1), characterized in that: A plurality of mounting holes (2) are formed inside the branch plate (1). An installation pad (18) is fixedly installed at the bottom of the branch plate (1). Two support rings (3) are fixedly installed at the top of the branch plate (1). A plurality of sliding grooves (4) are formed inside both of the two support rings (3). A first hydraulic cylinder (6) is movably installed inside the inner side of the sliding groove (4). The input end of the first hydraulic cylinder (6) is communicated with an oil delivery pipe one (7). A control valve one (8) is arranged inside the oil delivery pipe one (7). Sliding frames (11) are fixedly sleeved on the outer sides of both ends of the first hydraulic cylinder (6). An adjusting bolt (19) is threadedly penetrated through the inside of the top end of the sliding frame (11). A bearing seat (21) is sleeved at the bottom of the adjusting bolt (19). An elastic telescopic frame (20) is fixedly installed at the bottom of the bearing seat (21). A pin column (22) is fixedly installed at the bottom of the elastic telescopic frame (20). A plurality of positioning holes (5) are formed at the top of both of the two support rings (3). A first clamping plate (9) is fixedly installed at the output end of the first hydraulic cylinder (6). Soft clamping blocks (10) are fixedly installed on the opposite sides of the first clamping plate (9). A rotating frame (13) is rotatably installed at the top of the first clamping plate (9). A support frame (12) is rotatably installed at the top of the rotating frame (13). A second hydraulic cylinder (14) is fixedly installed at the middle part of the rotating frame (13). The input end of the second hydraulic cylinder (14) is communicated with an oil delivery pipe two (16). A control valve two (17) is installed inside the oil delivery pipe two (16). A second clamping plate (15) is fixedly installed at the output end of the second hydraulic cylinder (14).
2. The fixture for large-magnitude vibration test according to claim 1, characterized in that: The mounting holes (2) are evenly distributed in a circular pattern inside the branch plate (1). The installation pad (18) is located on the opposite side of the mounting holes (2).
3. The fixture for large-magnitude vibration test according to claim 1, wherein: The two support rings (3) are sleeved with each other in a pattern of a large circle and a small circle. The sliding grooves (4) are evenly distributed in a circular pattern inside the support rings (3). The two support rings (3) and the branch plate (1) are concentric circles.
4. A fixture for a large-scale vibration test according to claim 1, characterized in that: The first hydraulic cylinder (6) is slidably penetrated and installed inside the sliding groove (4). The sliding frame (11) is slidably clamped on the outer side of the support ring (3). The sliding frame (11) is in the shape of an arc-shaped clamping plate, and the specification dimensions of the sliding frame (11) are adapted to the specification dimensions of the support ring (3).
5. The fixture for large-magnitude vibration test according to claim 1, characterized in that: The positioning holes (5) are evenly distributed in a circular pattern at the top of the support ring (3). The specification dimensions of the pin column (22) are adapted to the specification dimensions of the positioning holes (5). The specification dimensions of the elastic telescopic frame (20) are adapted to the specification dimensions of the sliding frame (11).
6. The fixture for large - magnitude vibration test according to claim 1, wherein: The support frame (12) is fixedly installed on the back of the first clamping plate (9). The input ends of the oil delivery pipe two (16) and the oil delivery pipe one (7) are both hoses.