A specimen holder for a tensile testing machine
By designing the threaded connection and worm gear meshing of the clamping components, the problems of inconvenient locking and large clamping force adjustment errors in existing tensile testing machine clamping devices are solved, realizing convenient fixation and stable clamping of the specimen and improving the accuracy of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI JULONG NEW MATERIALS TECHNOLOGY CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-03
AI Technical Summary
The clamping device of the existing tensile testing machine lacks a locking function, which leads to large errors in the adjustment of the clamping force of the specimen, making it difficult to adjust to the maximum clamping pressure. Furthermore, it is inconvenient to disassemble and assemble, affecting the accuracy of the test.
A sample holder comprising components such as a clamping plate, a linkage plate, a drive rod, a screw, and a support rod was designed. The clamping assembly is realized through the threaded connection between the worm and the worm wheel and through the support assembly. The meshing of the worm and the worm wheel drives the linkage plate to move, the clamping plate fixes the sample, and the support assembly improves stability.
The sample clamping assembly, which integrates clamping components, achieves convenient and stable fixation and clamping of samples of different sizes through the stable clamping of clamping plates, the support of supporting components, and the meshing of worm gears, thereby improving the testing accuracy of the testing machine.
Smart Images
Figure CN224456374U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of tensile testing machines and relates to a sample holder for a tensile testing machine. Background Technology
[0002] A tensile testing machine, also known as a universal testing machine, is a mechanically applied testing machine used to perform static load, tensile, compression, bending, shearing, tearing, and peeling tests on various materials. The tensile testing machine fixture is an important component of the instrument, and different materials require different fixtures.
[0003] Currently, a Chinese patent with publication number CN221883290U discloses a sample clamping device for a tensile testing machine. This patent discloses a convenient locking technical solution, which effectively solves the problems of existing tensile testing machine clamping devices that usually lack locking function, have a certain distance between two adjacent positioning holes, have large errors in adjusting the clamping force of the sample to be tested for tensile force, cannot be adjusted to the maximum clamping pressure, are prone to slippage of the test sample, and affect the accuracy of tensile testing of the tensile testing machine.
[0004] However, in actual use, the clamping blocks are locked by threaded connection. But when the staff disassembles and assembles the sample, they need to repeatedly turn multiple sets of locking rods, which is inconvenient for the staff to disassemble and assemble the sample. Therefore, a sample holder for tensile testing machine is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a specimen holder for a tensile testing machine, which aims to solve the following problem.
[0006] To solve the above-mentioned technical problems, this utility model provides a specimen holder for a tensile testing machine, including a connecting plate, a placement groove on the bottom surface of the connecting plate, a linkage plate placed inside the placement groove, and a clamping assembly for clamping the specimen inside the placement groove.
[0007] The clamping assembly includes two clamping plates, both of which are placed inside the placement slot. The clamping plates are located at the bottom of the linkage plate. The top surface of the connecting plate is rotatably connected to a drive rod that extends through the connecting plate and into the placement slot via a bearing. The top surface of the linkage plate is fixedly connected to a screw that extends into the drive rod. The bottom surface of the linkage plate has two sliding slots. The top surfaces of the two clamping plates are fixedly connected to a sliding plate that extends into the sliding slot. The top surface of the linkage plate is fixedly connected to a support rod that extends through the connecting plate and to its top.
[0008] The linkage plate is equipped with a support component for supporting the sliding plate.
[0009] The connecting plate is equipped with a drive assembly for rotating the drive rod.
[0010] The present invention is further configured such that the sliding plate and the sliding groove are slidably connected, the bottom surface of the drive rod is provided with a threaded hole, and the screw extends into the interior of the threaded hole and is threadedly connected thereto.
[0011] The present invention is further configured such that a support hole is provided on the top surface of the connecting plate, the support rod passes through the support hole and is clearance-fitted with it, a threaded hole is provided on the bottom surface of the drive rod, and the screw extends into the interior of the threaded hole and is threadedly connected with it.
[0012] The present invention is further configured such that the support assembly includes two telescopic rods, the two telescopic rods are respectively fixedly connected inside two sliding grooves, the two telescopic rods are respectively fixedly connected to two sliding plates, and the outer peripheral walls of the two telescopic rods are fitted with springs respectively fixedly connected to the sliding grooves and the sliding plates. The linkage plate has two support grooves inside, and the top surfaces of the two sliding plates are each fixedly connected with a support block extending into the support groove.
[0013] The present invention is further configured such that the support block and the support groove are slidably connected, and both the support block and the support groove are T-shaped.
[0014] The present invention is further configured such that the telescopic rod consists of a sleeve and a moving rod, one end of the moving rod penetrates and extends into the interior of the sleeve, a limiting block located inside the sleeve is fixedly connected to the outside of the moving rod, and a through hole adapted to the moving rod is provided on one side of the sleeve.
[0015] The present invention is further configured such that the driving assembly includes a fixed frame, the fixed frame is fixedly connected to the top surface of the connecting plate, the driving rod extends into the interior of the fixed frame, and a rotating rod with one end penetrating through the fixed frame and extending into its interior is rotatably connected to the right side of the fixed frame via a bearing. A handle is fixedly connected to the right side of the rotating rod, a worm gear is fixedly fitted on the outer peripheral wall of the rotating rod, and a worm wheel that meshes with the worm gear is fixedly installed on the outer peripheral wall of the driving rod.
[0016] The present invention is further configured such that the fixing frame is a U-shaped frame, the driving rod is rotatably connected to the fixing frame through a bearing, and the rotating rod is rotatably connected to the fixing frame through a bearing.
[0017] Compared with existing technologies, this utility model provides a sample holder for a tensile testing machine. The clamping plate facilitates the clamping and fixing of the sample. The threaded connection between the drive rod and the screw drives the linkage plate to move, which in turn moves the clamping plate. This design is suitable for fixing samples of different sizes. Simultaneously, the support rod supports the linkage plate, improving its stability. The sliding connection between the sliding plate and the sliding groove supports the clamping plate, further enhancing its stability. A spring supports the sliding plate, improving its stability. Furthermore, the meshing between the worm and the worm wheel drives the drive rod to rotate, improving its stability. This design is more convenient and practical. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural view of the present invention;
[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0020] Figure 3 This is an enlarged schematic diagram of the internal structure of the linkage plate in this utility model.
[0021] The components are as follows: 1. Connecting plate; 2. Fixing frame; 3. Clamping plate; 4. Placement slot; 5. Linkage plate; 6. Handle; 7. Rotating rod; 8. Worm gear; 9. Worm wheel; 10. Drive rod; 11. Screw; 12. Sliding plate; 13. Support block; 14. Support slot; 15. Spring; 16. Telescopic rod; 17. Sliding slot; 18. Support rod. Detailed Implementation
[0022] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of a specimen holder for a tensile testing machine according to the present invention. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar parts.
[0023] Please see Figures 1 to 3 In this embodiment, a sample holder for a tensile testing machine includes a connecting plate 1. The bottom surface of the connecting plate 1 is provided with a placement groove 4. A linkage plate 5 is placed inside the placement groove 4. A clamping assembly for clamping the sample is provided inside the placement groove 4.
[0024] The clamping assembly includes two clamping plates 3, both of which are placed inside the placement slot 4. The clamping plates 3 are located at the bottom of the linkage plate 5. The top surface of the connecting plate 1 is rotatably connected to a drive rod 10, one end of which passes through the connecting plate 1 and extends into the placement slot 4, via a bearing. The top surface of the linkage plate 5 is fixedly connected to a screw 11, one end of which extends into the drive rod 10. The bottom surface of the linkage plate 5 has two sliding slots 17. The top surfaces of the two clamping plates 3 are fixedly connected to a sliding plate 12, one end of which extends into the sliding slot 17. The top surface of the linkage plate 5 is fixedly connected to a support rod 18, one end of which passes through the connecting plate 1 and extends to its top.
[0025] The sliding plate 12 and the sliding groove 17 are slidably connected. The bottom surface of the drive rod 10 is provided with a threaded hole. The screw 11 extends into the inside of the threaded hole and is threadedly connected to it. The top surface of the connecting plate 1 is provided with a support hole. The support rod 18 passes through the support hole and is clearance-fitted with it. The bottom surface of the drive rod 10 is provided with a threaded hole. The screw 11 extends into the inside of the threaded hole and is threadedly connected to it.
[0026] Specifically, the drive rod 10 rotates, and through the threaded connection between the drive rod 10 and the screw 11 and the restriction of the linkage plate 5 by the support rod 18, the screw 11 drives the linkage plate 5 to move downward, pushing the clamping plate 3 to move downward. Through the sliding connection between the sliding plate 12 and the sliding groove 17, the placement groove 4 pushes the clamping plate 3 to move relative to each other, and the clamping plate 3 fixes the sample.
[0027] Please see Figures 1 to 3 In this embodiment, the linkage plate 5 is provided with a support assembly for supporting the sliding plate 12. The support assembly includes two telescopic rods 16, which are fixedly connected to the inside of two sliding grooves 17. The two telescopic rods 16 are fixedly connected to the two sliding plates 12. The outer peripheral walls of the two telescopic rods 16 are fitted with springs 15 that are fixedly connected to the sliding grooves 17 and the sliding plates 12 respectively. The linkage plate 5 has two support grooves 14 inside. The top surfaces of the two sliding plates 12 are fixedly connected to a support block 13 with one end extending into the support groove 14.
[0028] The support block 13 and the support groove 14 are slidably connected. Both the support block 13 and the support groove 14 are T-shaped. The telescopic rod 16 consists of a sleeve and a moving rod. One end of the moving rod passes through and extends into the interior of the sleeve. A limiting block located inside the sleeve is fixedly connected to the outside of the moving rod. A through hole adapted to the moving rod is opened on one side of the sleeve.
[0029] Specifically, the sliding plate 12 compresses the telescopic rod 16 and the spring 15, and the spring 15 supports the sliding plate 12. The sliding plate 12 is also supported by the sliding connection between the support block 13 and the support groove 14, thereby improving the stability of the sliding plate 12.
[0030] Please see Figures 1 to 3 In this embodiment, the connecting plate 1 is provided with a drive assembly for driving the drive rod 10 to rotate. The drive assembly includes a fixed frame 2, which is fixedly connected to the top surface of the connecting plate 1. The drive rod 10 extends into the interior of the fixed frame 2. A rotating rod 7 with one end penetrating the fixed frame 2 and extending into it is rotatably connected to the right side of the fixed frame 2 through a bearing. A handle 6 is fixedly connected to the right side of the rotating rod 7. A worm gear 8 is fixedly fitted on the outer peripheral wall of the rotating rod 7. A worm wheel 9 that meshes with the worm gear 8 is fixedly installed on the outer peripheral wall of the drive rod 10.
[0031] Among them, the fixed frame 2 is a U-shaped frame, the drive rod 10 is rotatably connected to the fixed frame 2 through the bearing, and the rotating rod 7 is rotatably connected to the fixed frame 2 through the bearing.
[0032] Specifically, turning the handle 6 causes the rotating rod 7 to rotate, which in turn causes the worm 8 to rotate. Through the meshing between the worm 8 and the worm wheel 9, the drive rod 10 is driven to rotate.
[0033] The working principle of the above embodiments is as follows:
[0034] Turning handle 6 causes rotating rod 7 to rotate, which in turn causes worm 8 to rotate. Through the meshing between worm 8 and worm wheel 9, driving rod 10 to rotate. Through the threaded connection between driving rod 10 and screw 11, and the restriction of linkage plate 5 by support rod 18, screw 11 causes linkage plate 5 to move downward, pushing clamping plate 3 downward. Through the sliding connection between sliding plate 12 and sliding groove 17, placement groove 4 pushes clamping plate 3 to move relative to each other. The clamping plate 3 fixes the sample. Sliding plate 12 compresses telescopic rod 16 and spring 15. Through the action of spring 15, sliding plate 12 is supported. Through the sliding connection between support block 13 and support groove 14, sliding plate 12 is supported, improving the stability of sliding plate 12.
[0035] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.
[0036] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.
[0037] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.
Claims
1. A test specimen holder for a tensile testing machine, characterized by, Includes a connecting plate (1), the bottom surface of which is provided with a placement groove (4), a linkage plate (5) is placed inside the placement groove (4), and a clamping assembly for clamping the sample is provided inside the placement groove (4). The clamping assembly includes two clamping plates (3), both of which are placed inside the placement slot (4). The clamping plates (3) are located at the bottom of the linkage plate (5). The top surface of the connecting plate (1) is rotatably connected to a drive rod (10) that extends through the connecting plate (1) and into the placement slot (4) via a bearing. The top surface of the linkage plate (5) is fixedly connected to a screw rod (11) that extends into the drive rod (10). The bottom surface of the linkage plate (5) has two sliding slots (17). The top surfaces of the two clamping plates (3) are fixedly connected to a sliding plate (12) that extends into the sliding slot (17). The top surface of the linkage plate (5) is fixedly connected to a support rod (18) that extends through the connecting plate (1) and into its top. The linkage plate (5) is provided with a support assembly for supporting the sliding plate (12), and the connecting plate (1) is provided with a drive assembly for driving the drive rod (10) to rotate.
2. A specimen holder for a tensile testing machine according to claim 1, wherein The sliding plate (12) and the sliding groove (17) are slidably connected. The bottom surface of the drive rod (10) is provided with a threaded hole. The screw (11) extends into the interior of the threaded hole and is threadedly connected to it.
3. A specimen holder for a tensile testing machine according to claim 1, wherein The top surface of the connecting plate (1) is provided with a support hole, the support rod (18) passes through the support hole and is clearance-fitted with it, the bottom surface of the drive rod (10) is provided with a threaded hole, and the screw (11) extends into the inside of the threaded hole and is threadedly connected with it.
4. A specimen holder for a tensile testing machine according to claim 1, wherein The support assembly includes two telescopic rods (16), which are fixedly connected inside two sliding grooves (17) respectively. The two telescopic rods (16) are fixedly connected to two sliding plates (12) respectively. The outer peripheral walls of the two telescopic rods (16) are fitted with springs (15) that are fixedly connected to the sliding grooves (17) and the sliding plates (12) respectively. The linkage plate (5) has two support grooves (14) inside. The top surfaces of the two sliding plates (12) are fixedly connected to a support block (13) that extends into the support groove (14) at one end.
5. A specimen holder for a tensile testing machine according to claim 4, wherein The support block (13) and the support groove (14) are slidably connected, and both the support block (13) and the support groove (14) are T-shaped.
6. A specimen holder for a tensile testing machine according to claim 4, characterized in that, The telescopic rod (16) consists of a housing and a moving rod. One end of the moving rod passes through and extends into the interior of the housing. A limiting block located inside the housing is fixedly connected to the outside of the moving rod. A through hole adapted to the moving rod is opened on one side of the housing.
7. A specimen holder for a tensile testing machine according to claim 4, characterized in that, The drive assembly includes a fixed frame (2), which is fixedly connected to the top surface of the connecting plate (1). The drive rod (10) extends into the interior of the fixed frame (2). A rotating rod (7) with one end penetrating the fixed frame (2) and extending into its interior is rotatably connected to the right side of the fixed frame (2) via a bearing. A handle (6) is fixedly connected to the right side of the rotating rod (7). A worm gear (8) is fixedly fitted on the outer peripheral wall of the rotating rod (7). A worm wheel (9) meshing with the worm gear (8) is fixedly installed on the outer peripheral wall of the drive rod (10).
8. A specimen holder for a tensile testing machine according to claim 7, wherein The fixed frame (2) is a U-shaped frame, the drive rod (10) is rotatably connected to the fixed frame (2) through a bearing, and the rotating rod (7) is rotatably connected to the fixed frame (2) through a bearing.