Hydraulic universal testing machine

Abstract

The utility model relates to the technical field of hydraulic testing machines, in particular to a hydraulic universal testing machine. The bottom of the inner side of the rack is provided with a chuck a; the top of the inner side of the rack is provided with a hydraulic cylinder; the piston end of the hydraulic cylinder is connected with a movable frame; the top of the chuck b is connected with a pressing block; the pressure test and the tension test of the test piece can be completed by arranging the chuck a and the chuck b, the chuck b is rotationally arranged on the inner side of the fixing frame through the transverse shaft, the pressing block is arranged at the top of the chuck b, the adjusting mechanism is arranged on the transverse shaft, and the chuck b can be driven to rotate through the transverse shaft under the cooperation of the motor, the worm gear and the worm. Therefore, a tension test can be changed into a pressure test, and the overall occupied space of the testing machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic testing machines, in particular to a hydraulic universal testing machine. Background Art

[0002] The hydraulic universal testing machine is a special equipment used for testing the mechanical properties of materials. It provides force and displacement during the test through the hydraulic system to achieve mechanical property testing of materials. It consists of a hydraulic system, upper and lower clamps, a data acquisition system and a control system. It is used for mechanical property testing of metals, non-metals, composite materials and products.

[0003] A Chinese patent with authorization announcement number CN217561130U discloses an electro-hydraulic servo universal testing machine, which has three sets of clamps and a support platform for pressure testing distributed above and below. The support platform and the middle clamp are integrated together, and the bottom end of the test piece is clamped and fixed by the first set of electric clamps. The second electric clamp is driven to drive the support platform downward to perform pressure testing on the test piece. By clamping the test piece between the third clamp and the second clamp, the second clamp is driven downward to perform a tensile test on the test piece.

[0004] However, the universal testing machine mentioned above needs to set three sets of fixtures when completing the functions of compression testing and tension testing, which makes the overall structure of the testing machine more complicated and increases the assembly space. Utility Model Content

[0005] In response to the problems existing in the background technology, a hydraulic universal testing machine is proposed. By providing two sets of clamps, chuck a and chuck b, pressure testing and tension testing can be performed on the test piece, reducing the overall space occupied by the testing machine.

[0006] The utility model proposes a hydraulic universal testing machine, comprising

[0007] A base is provided with a frame, a chuck a is installed at the bottom of the inner side of the frame, a hydraulic cylinder is installed at the top of the inner side of the frame, and the piston end of the hydraulic cylinder is connected to the mobile frame;

[0008] Chuck b, with a pressure block connected to its top and a horizontal shaft connected to both sides, one end of the horizontal shaft being rotatably connected to the inner wall of the movable frame via a bearing, and an adjustment mechanism for driving the chuck b to flip is provided on the horizontal shaft; and

[0009] The splash-proof assembly is arranged on the feeding side of the frame to prevent the material from breaking and splashing during the test.

[0010] Preferably, grooves are provided on both sides of the inner wall of the frame, and a limit post is vertically provided in the groove. A connecting sleeve is slidably provided on the limit post, and the connecting sleeve is connected to both ends of the movable frame.

[0011] Preferably, the adjustment mechanism includes a motor, a worm gear and a worm. The motor is mounted on the inner top wall of the frame, and its output end is connected to the worm. One side of the worm is meshed with a worm gear, and the worm gear is mounted on the corresponding horizontal axis.

[0012] Preferably, the splash-proof assembly includes a slide plate, a baffle and an elastic connector. The base is provided with a receiving groove located on one side of the frame. The slide plate is slidably arranged in the receiving groove. The slide plate is connected to a baffle extending above the base, and an elastic connector is provided on the side of the baffle.

[0013] Preferably, the elastic connecting member includes a bottom plate, a transverse plate and a support spring, the bottom of the base side is connected to the bottom plate, the top of the baffle side is connected to the transverse plate, and the two ends between the transverse plate and the bottom plate are connected to the support spring.

[0014] Preferably, a handle is connected to the side of the transverse board, which is used for a worker to manually apply a moving force to the transverse board.

[0015] Through the above technical solution, the hydraulic universal testing machine disclosed in the utility model can complete pressure testing and tensile testing on the test piece by being provided with two sets of clamps, chuck a and chuck b, wherein chuck b is arranged on the inner side of the fixed frame through horizontal axis rotation, a pressure block is arranged on the top of chuck b, and an adjustment mechanism is arranged on the horizontal axis. The cooperation of the motor, worm gear and worm can drive chuck b to rotate through the horizontal axis, so that the pressure block is opposite to chuck a, thereby changing from tensile testing to pressure testing, reducing the overall occupied space of the testing machine.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the hydraulic universal testing machine of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the rear structure;

[0019] Figure 3 for Figure 2 Schematic diagram of the partial side section structure.

[0020] Figure numerals: 1. base; 2. frame; 3. chuck a; 4. hydraulic cylinder; 5. movable frame; 6. chuck b; 7. pressure block; 8. horizontal axis; 9. groove; 10. limit stop; 11. connecting sleeve; 12. motor; 13. worm gear; 14. worm; 15. slide plate; 16. baffle; 17. receiving groove; 18. bottom plate; 19. horizontal plate; 20. support spring; 21. handle. DETAILED DESCRIPTION

[0021] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0022] Example 1

[0023] like Figure 1-Figure 3 As shown, the hydraulic universal testing machine proposed in the utility model includes a base 1, a chuck b6 and a splash-proof assembly. A frame 2 is provided on the base 1, a chuck a3 is installed at the bottom inside the frame 2, a hydraulic cylinder 4 is installed at the top inside the frame 2, the piston end of the hydraulic cylinder 4 is connected to a movable frame 5, a pressure block 7 is connected to the top of the chuck b6, both sides of which are connected to a horizontal shaft 8, one end of the horizontal shaft 8 is rotatably connected to the inner wall of the movable frame 5 through a bearing, an adjustment mechanism for driving the chuck b6 to flip is provided on the horizontal shaft 8, and a splash-proof assembly is provided on the feeding side of the frame 2, which is used to prevent the material from breaking and splashing during the test.

[0024] like Figure 1 As shown, grooves 9 are provided on both sides of the inner wall of the frame 2, and a limit house 10 is vertically set in the groove 9. A connecting sleeve 11 is slidably provided on the limit column, and the connecting sleeve 11 is connected to the two ends of the mobile frame 5. When the mobile frame 5 moves vertically under the driving action of the hydraulic cylinder 4, its movement trajectory is limited by the cooperation of the connecting sleeve 11 and the limit house 10 to ensure its movement stability.

[0025] like Figure 1 and Figure 2 As shown, the adjustment mechanism includes a motor 12, a worm gear 13 and a worm 14. The motor 12 is installed on the inner top wall of the frame 2, and its output end is connected to the worm 14. One side of the worm 14 is meshed with the worm gear 13. The worm gear 13 is installed on the corresponding horizontal axis 8. The motor 12 drives the worm 14 to rotate, and the worm 14 meshes with the worm gear 13. The meshing force drives the horizontal axis 8 and the chuck b6 connected to the horizontal axis 8 to rotate.

[0026] Example 2

[0027] like Figure 1-Figure 3 As shown, the hydraulic universal testing machine proposed by the present invention, based on the above embodiment, also records in detail the specific components of the splash-proof assembly and its specific operation method.

[0028] like Figure 3 As shown, the splash-proof assembly includes a slide 15, a baffle 16 and an elastic connector. A receiving groove 17 is provided on the base 1 and is located on one side of the frame 2. The slide 15 is slidably arranged in the receiving groove 17. The slide 15 is connected to a baffle 16 extending to the top of the base 1, and an elastic connector is provided on the side of the baffle 16.

[0029] like Figure 2As shown, the elastic connecting member includes a bottom plate 18, a cross plate 19 and a support spring 20. The bottom of the side of the base 1 is connected to the bottom plate 18, the top of the side of the baffle 16 is connected to the cross plate 19, and the two ends between the cross plate 19 and the bottom plate 18 are connected to the support spring 20.

[0030] like Figure 2 As shown, a handle 21 is connected to the side of the transverse plate 19 , which is used for a worker to manually apply a moving force to the transverse plate 19 .

[0031] During use, the baffle 16, under the action of the slide 15 and the elastic connecting member, isolates the staff from the test piece being tested from the loading side of the frame 2 to prevent the test piece from breaking and splashing onto the staff during the pressure test. When the test is completed and the test piece needs to be taken or placed, a downward force is applied to the cross plate 19 through the handle 21. Under this force, the cross plate 19 squeezes the support spring 20 and drives most of the baffle 16 to move into the storage slot. During the movement, the slide 15 limits the moving trajectory of the baffle 16. When the taking and placing operation is completed, the downward pressure applied to the handle 21 is released, and the baffle 16 rises and resets through the cross plate 19 under the action of the reset force of the support spring 20.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. Hydraulic universal testing machine, characterized in that, include A base (1) is provided with a frame (2) thereon, a chuck a (3) is installed at the bottom of the inner side of the frame (2), a hydraulic cylinder (4) is installed at the top of the inner side of the frame (2), and a movable frame (5) is connected to the piston end of the hydraulic cylinder (4); The chuck b (6) has a pressure block (7) connected to its top and a transverse shaft (8) connected to both sides thereof. One end of the transverse shaft (8) is rotatably connected to the inner wall of the movable frame (5) via a bearing. The transverse shaft (8) is provided with an adjustment mechanism for driving the chuck b (6) to flip; and The anti-splash component is arranged on the feeding side of the frame (2) and is used to prevent the material from breaking and splashing during the test.

2. The hydraulic universal testing machine according to claim 1, characterized in that: Grooves (9) are provided on both sides of the inner wall of the frame (2), and a limit post (10) is vertically provided in the groove (9). A connecting sleeve (11) is slidably provided on the limit post, and the connecting sleeve (11) is connected to both ends of the movable frame (5).

3. The hydraulic universal testing machine according to claim 1, characterized in that: The regulating mechanism comprises a motor (12), a worm gear (13) and a worm (14). The motor (12) is mounted on the inner top wall of the frame (2). The output end of the motor (12) is connected to the worm (14). One side of the worm (14) is meshedly connected to the worm gear (13). The worm gear (13) is mounted on the corresponding transverse shaft (8).

4. The hydraulic universal testing machine according to claim 1, characterized in that: The splash-proof assembly comprises a slide plate (15), a baffle plate (16) and an elastic connecting piece. A receiving groove (17) is provided on the base (1) and is located on one side of the frame (2). The slide plate (15) is slidably arranged in the receiving groove (17). The slide plate (15) is connected to the baffle plate (16) extending to the top of the base (1). The side of the baffle plate (16) is provided with an elastic connecting piece.

5. The hydraulic universal testing machine according to claim 4, characterized in that: The elastic connecting member comprises a bottom plate (18), a transverse plate (19) and a supporting spring (20); the bottom of the side of the base (1) is connected to the bottom plate (18); the top of the side of the baffle (16) is connected to the transverse plate (19); and the two ends between the transverse plate (19) and the bottom plate (18) are connected to the supporting spring (20).

6. The hydraulic universal testing machine according to claim 5, characterized in that: A handle (21) is connected to the side of the transverse plate (19), which is used for a worker to manually apply a moving force to the transverse plate (19).

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