CN213813150U

CN213813150U - Tensile, impact integral type testing machine

Info

Publication number: CN213813150U
Application number: CN202022865009.2U
Authority: CN
Inventors: 张振; 马颜春; 马忠新; 马恒; 邵夏威; 郭孟雨
Original assignee: Nanjing Institute of Technology
Current assignee: Nanjing Institute of Technology
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-07-27
Anticipated expiration: 2030-12-03

Abstract

The utility model relates to a tensile, impact integral type testing machine, wherein, drop hammer can set up between two slide rails with sliding from top to bottom, and the entablature level sets up in the drop hammer top, and both ends are respectively through screw nut and correspond the lead screw cooperation about the entablature. The two slide rails upwards penetrate through the middle cross beam and are vertically and fixedly connected with the upper cross beam. The top of the upper beam is provided with a high-precision servo speed regulating motor and an arc synchronous belt wheel speed reducing system which are used for driving and rotating two screw rods. And a stretching clamp for performing a stretching test is fixedly arranged in the middle position of the lower end surface of the upper cross beam and in the middle position of the upper end surface of the middle cross beam. A first electromagnet is fixed on the upper end face of the drop hammer, and an opening and closing clamp used for fixing or releasing the first electromagnet is arranged in the middle of the lower end face of the middle cross beam. The utility model discloses simple structure, compactness, with low costs can stretch and compression test, and the suitability is stronger.

Description

Tensile, impact integral type testing machine

Technical Field

The utility model belongs to the technical field of mechanical properties of materials test equipment, concretely relates to tensile, impact integral type testing machine.

Background

The mechanical properties of the parts can be divided into static load properties and dynamic load properties. Static load characteristic tests (force values, strength and deformation characteristics of the material under tension, bending, shearing and compression) are mainly completed by a tension tester, and dynamic load impact characteristic tests (research on force, deformation, crack propagation and work absorption characteristics of the material under the high-speed strain rate of impact) are completed by a compression tester. However, both the tensile testing machine and the compression testing machine are single in testing function, and equipment cost and floor space of a testing place are increased invisibly.

Disclosure of Invention

The utility model provides a simple structure, with low costs to tensile, the impact integral type testing machine of tensile and pressure test function of integration.

The utility model discloses the technical scheme who adopts does:

a tensile and impact integrated testing machine comprises a base, a middle cross beam, a drop hammer and an upper cross beam, wherein a workbench clamp for mounting a sample is fixedly arranged in the middle of the upper end surface of the base; sleeves matched with the slide rails are integrally arranged on two sides of the drop hammer, the drop hammer is arranged between the two slide rails in a vertically sliding mode through the sleeves, and a force sensor is arranged inside the workbench clamp; the middle cross beam is horizontally arranged above the drop hammer, and the left end and the right end of the middle cross beam are respectively matched with corresponding lead screws through lead screw nuts; the two sliding rails upwards penetrate through the middle cross beam, and the tops of the two sliding rails are respectively and fixedly connected with the upper cross beam in a vertical mode; the top of the upper crossbeam is provided with a high-precision servo speed regulating motor and an arc synchronous belt pulley speed reducing system which are used for driving and rotating two screw rods; a tension and compression sensor is fixedly arranged in the middle of the lower end surface of the upper cross beam, and a tension clamp for performing a tension test is fixedly arranged in the middle of the lower end surface of the tension and compression sensor and the upper end surface of the middle cross beam; a first electromagnet is fixed on the upper end face of the drop hammer, and an opening and closing clamp used for fixing or releasing the first electromagnet is arranged in the middle of the lower end face of the middle cross beam.

Furthermore, the bottoms of the two slide rails are sleeved with buffer devices for absorbing impact force.

Furthermore, a hammer holding mechanism for clamping the falling hammer to prevent secondary impact when the falling hammer rebounds is arranged at the position, above the workbench clamp, of the bottoms of the two slide rails.

Further, the slide rail is fixedly connected with the base and the upper cross beam through threads; the screw rod is fixedly connected with the base through threads.

Further, the workbench clamp is fixed on the base through a screw; the tension and compression sensor is fixed on the lower end face of the upper cross beam through a screw, and the tension clamp is in threaded connection with the tension and compression sensor and the middle cross beam; the first electromagnet is welded and fixed on the drop hammer.

Furthermore, the tensile and impact integrated testing machine also comprises a safety belt impact clamp which can replace the opening and closing clamp and is used for a safety belt bearing performance test; the upper end of the safety belt is fixed with the safety belt impact clamp through a hook; and the left and right positions of the upper end surface of the drop hammer are respectively welded and fixed with a second electromagnet, and the second electromagnet attracts the safety belt impact clamp to fix the drop hammer or release the drop hammer.

The beneficial effects of the utility model reside in that:

the utility model discloses simple structure, compactness, with low costs can stretch and compression test, and the suitability is stronger.

Drawings

Fig. 1 is a schematic structural view of the tensile and impact integrated testing machine of the present invention;

FIG. 2 is a schematic view of a seat belt impact clamp;

reference numerals: the device comprises a base 1, a lead screw 2, a first electromagnet 3, an opening and closing clamp 4, a middle cross beam 5, a stretching clamp 6, a circular arc synchronous pulley speed reducing system 7, a high-precision servo speed regulating motor 8, a sliding rail 9, a falling hammer 10, a hammer holding mechanism 11, a workbench clamp 12, a buffer device 13, a tension and compression sensor 14, a safety belt impact clamp 15 and a second electromagnet 16.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a tensile and impact integrated testing machine comprises a base 1 (the base 1 is fixed on a solid and flat ground through foundation bolts), a middle cross beam 5, a drop hammer 10 and an upper cross beam, wherein a workbench clamp 12 for mounting a sample is fixedly arranged at the middle position of the upper end face of the base 1 through screws, slide rails 9 are respectively and vertically fixed at the left side and the right side of the workbench clamp 12 on the upper end face of the base 1, and a screw rod 2 is vertically fixed at the outer side of each slide rail 9 on the upper end face of the base 1. The two sides of the drop hammer 10 are integrally provided with sleeves matched with the sliding rails 9, the drop hammer 10 is arranged between the two sliding rails 9 in a vertically sliding mode through the sleeves, the force sensor is arranged inside the workbench clamp 12, and the impact load of the punch acting on a sample at the moment of impact of the drop hammer 10 can be recorded. The middle cross beam 5 is horizontally arranged above the drop hammer 10, and the left end and the right end of the middle cross beam 5 are respectively matched with the corresponding screw rods 2 through screw nuts. The two slide rails 9 upwards penetrate through the middle cross beam 5, and the tops of the two slide rails 9 are respectively and fixedly connected with the upper cross beam in a vertical mode. The top of the upper beam is provided with a high-precision servo speed regulating motor 8 for driving and rotating the two lead screws 2 and an arc synchronous belt wheel speed reducing system 7. And a tension-compression sensor 14 is fixedly arranged in the middle of the lower end surface of the upper cross beam through a screw, and a tension clamp 6 for performing a tension test is fixedly arranged in the middle of the lower end surface of the tension-compression sensor and the upper end surface of the middle cross beam 5 through threads. The upper end face of the drop hammer 10 is fixedly welded with a first electromagnet 3, the middle position of the lower end face of the middle cross beam 5 is provided with an opening and closing clamp 4 for fixing or releasing the first electromagnet 3, and the two are fixed through magnetic attraction.

In addition, the bottom parts of the two slide rails 9 are sleeved with buffer devices 13 (in the prior art, the spring mechanisms in the slide rails are mainly used for absorbing impact force, so that the damage of the impact to the workbench clamp 12 is avoided). And a hammer holding mechanism 11 for clamping the two slide rails 9 to prevent secondary impact when the falling hammer 10 rebounds is further arranged at the bottom of the two slide rails 9 and above the workbench clamp 12.

In this embodiment, the slide rail 9 is fixed to the base 1 and the upper cross beam by a screw thread. The screw rod 2 is fixedly connected with the base 1 through threads.

As the improvement of the scheme, the tensile and impact integrated testing machine further comprises a replaceable opening and closing clamp 4 and a safety belt impact clamp 15 for a safety belt bearing performance test. The upper end of the safety belt is fixed with a safety belt impact clamp 15 through a hook, and the lower end of the safety belt is fixed with a drop hammer 10 through a hook. And a second electromagnet 16 is respectively welded and fixed at the left and right positions of the upper end surface of the drop hammer 10, and the second electromagnet 16 sucks the safety belt impact clamp 15 to fix the drop hammer 10 or release the drop hammer 10.

The utility model discloses a tensile, impact integral type testing machine application method does:

1) and a tensile compression test. A sample is arranged on a pair of tensile clamps 6, two lead screws 2 are driven to rotate through a high-precision servo speed regulating motor 8 and an arc synchronous belt wheel speed reducing system 7, a middle cross beam 5 moves up and down to load the sample, and the loading force is read through a tension and compression sensor 14 to finish a tensile and compression test.

2) And drop hammer impact test. The test sample is installed on a workbench clamp 12, the height and the mass of the drop hammer 10 are determined, the middle cross beam 5 is lifted to the matching height, the selected weight is sleeved on a hammer rod of the drop hammer 10, and the weight is fixed by screwing a nut (different weights can be arranged on the hammer rod of the drop hammer 10). The opening and closing clamp 4 is released, the drop hammer 10 freely falls along the slide rail 9, and impacts a test sample fixed on the workbench 12, and the reading is obtained through a force sensor in the drop hammer 10. If the sample is not broken and the drop hammer 10 is rebounded, the hammer holding mechanism 11 rapidly clamps the rebounded drop hammer 10 to achieve the purpose of preventing secondary impact (the hammer holding mechanism 11 is the prior art and is controlled by a photoelectric signal).

3) And testing the bearing performance of the safety belt. The opening and closing clamp 4 is replaced by a safety belt impact clamp 15, the height and the mass of the drop hammer 10 are determined, the middle cross beam 5 is lifted to the matching height, the selected weight is sleeved on the hammer rod of the drop hammer 10, and the weight is fixed by screwing the nut. The upper end of the safety belt test piece is fixed with a safety belt impact clamp 15 through a hook, and the lower end is fixed with a drop hammer 10. The second electromagnet 16 and the belt impact clamp 15 are fixed by magnetic attraction, and the falling weight 10 is released by controlling the second electromagnet 16 to be powered off and lose magnetism.

Above only the utility model discloses an it is the preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the technical scheme under the thinking of the utility model discloses a scope of protection should point out, to the ordinary technical personnel of this technical field, is not deviating from the utility model discloses a plurality of improvements and moist decorations under the principle prerequisite should be regarded as the utility model discloses a scope of protection.

Claims

1. A tensile and impact integrated testing machine is characterized by comprising a base (1), a middle cross beam (5), a drop hammer (10) and an upper cross beam, wherein a workbench clamp (12) for mounting a sample is fixedly arranged in the middle of the upper end face of the base (1), slide rails (9) are respectively and vertically fixed at the left side and the right side of the workbench clamp (12) on the upper end face of the base (1), and a lead screw (2) is vertically fixed at the outer side of each slide rail (9) on the upper end face of the base (1); sleeves matched with the sliding rails (9) are integrally arranged on two sides of the drop hammer (10), the drop hammer (10) is arranged between the two sliding rails (9) in a vertically sliding mode through the sleeves, and a force sensor is arranged inside the workbench clamp (12); the middle cross beam (5) is horizontally arranged above the drop hammer (10), and the left end and the right end of the middle cross beam (5) are respectively matched with the corresponding screw rods (2) through screw rod nuts; the two sliding rails (9) upwards penetrate through the middle cross beam (5), and the tops of the two sliding rails (9) are respectively and vertically and fixedly connected with the upper cross beam; the top of the upper crossbeam is provided with a high-precision servo speed regulating motor (8) for driving and rotating the two lead screws (2) and an arc synchronous belt wheel speed reducing system (7); a tension and compression sensor (14) is fixedly arranged in the middle of the lower end surface of the upper cross beam, and a tensile clamp (6) for performing a tensile test is fixedly arranged in the middle of the lower end surface of the tension and compression sensor and the upper end surface of the middle cross beam (5); a first electromagnet (3) is fixed on the upper end face of the drop hammer (10), and an opening and closing clamp (4) used for fixing or releasing the first electromagnet (3) is arranged in the middle of the lower end face of the middle cross beam (5).

2. The tensile and impact integrated testing machine according to claim 1, wherein the bottom of each of the two sliding rails (9) is sleeved with a buffer device (13) for absorbing impact force.

3. The tensile and impact integrated testing machine according to claim 1, wherein a hammer holding mechanism (11) for clamping the drop hammer (10) to prevent secondary impact when the drop hammer rebounds is arranged at the position, above the worktable clamp (12), of the bottoms of the two slide rails (9).

4. The tensile and impact integrated testing machine according to claim 1, wherein the slide rail (9) is fixed with the base (1) and the upper cross beam through threaded connection; the screw rod (2) is fixedly connected with the base (1) through threads.

5. The tensile and impact integrated testing machine according to claim 1, wherein the worktable clamp (12) is fixed on the base (1) through screws; the tension and compression sensor (14) is fixed on the lower end face of the upper cross beam through a screw, and the tension clamp (6) is in threaded connection with the tension and compression sensor (14) and the middle cross beam (5); the first electromagnet (3) is welded and fixed on the drop hammer (10).

6. The tensile and impact integrated testing machine according to any one of claims 1 to 5, further comprising a replaceable opening and closing clamp (4), a safety belt impact clamp (15) for safety belt bearing performance test; the upper end of the safety belt is fixed with a safety belt impact clamp (15) through a hook, and the lower end of the safety belt is fixed with a drop hammer (10) through the hook; and the left and right positions of the upper end surface of the drop hammer (10) are respectively welded and fixed with a second electromagnet (16), and the second electromagnet (16) sucks the safety belt impact clamp (15) to fix the drop hammer (10) or release the drop hammer (10).