A mechanical device for testing the mechanics of parts

Abstract

The present invention discloses a mechanical device for testing the mechanics of parts, which relates to the field of part mechanics testing equipment, and solves the current technical problems of high labor intensity and low work efficiency in testing the mechanical properties of parts. It includes a workbench; a torque test assembly is installed on the workbench, a lower clamping head is installed above the torque test assembly, a lifting drive assembly is installed on one side of the workbench, a mounting box is installed on one side of the lifting drive assembly, a tensile test assembly and a pressure test assembly are installed in the mounting box, and the pressure test assembly is slidably connected to the tensile test assembly through a sliding connecting rod, and an upper clamping head corresponding to the lower clamping head is installed below the sliding connecting rod. The present invention greatly reduces the labor intensity of the inspectors, effectively improves the work efficiency, and can also test two of the torque, pressure and tensile properties of the parts at the same time.

Description

Technical Field

[0001] The invention relates to a parts mechanics testing device, and more particularly to a mechanical device for testing the mechanics of parts. Background Art

[0002] The engine is a complex and sophisticated mechanical structure. The engine involves many parts. In order to ensure the reliability of the engine during the whole machine performance test or in the later use process, the internal parts of the engine need to be tested for mechanical properties to ensure that the parts meet the operating requirements of the engine. The mechanical test of the parts mainly involves squeezing, twisting or stretching the parts to obtain their pressure resistance, torque or tensile properties. At present, the means of mechanical testing of parts is to use pressure testers, torque testers and tensile testers to measure the pressure resistance, torque and tensile properties of the parts respectively. During the test, the clamping head on the instrument (usually a three-jaw chuck) is used for clamping. This test method not only requires more instruments, but also requires frequent disassembly and assembly of parts during the measurement process, resulting in a large workload and low efficiency for the inspectors, which is not conducive to batch measurement. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a mechanical device for testing the mechanics of parts in view of the deficiencies in the prior art, thereby reducing the labor intensity of testers and improving work efficiency.

[0004] The technical solution of the present invention is: a mechanical device for testing the mechanics of parts, comprising a workbench; a torque testing assembly is installed on the workbench, a lower clamping head is installed above the torque testing assembly, a lifting drive assembly is installed on one side of the workbench, a mounting box is installed on one side of the lifting drive assembly, a tensile testing assembly and a pressure testing assembly are installed in the mounting box, and the pressure testing assembly is connected to the tensile testing assembly through a sliding connecting rod, and an upper clamping head corresponding to the lower clamping head is installed below the sliding connecting rod.

[0005] As a further improvement, the torque testing assembly includes a power drive assembly, a transmission shaft and a torque sensor; the power drive assembly is installed in a workbench, one end of the transmission shaft is installed at the output end of the power drive assembly, the other end of the transmission shaft passes through the workbench, the lower clamping head is installed at one end of the transmission shaft passing through the workbench, and the torque sensor is installed at the lower end of the transmission shaft.

[0006] Furthermore, the power drive assembly includes a drive motor and a reduction gearbox; the output end of the drive motor is connected to the input end of the reduction gearbox, and the output end of the reduction gearbox is connected to the transmission shaft through a belt.

[0007] Furthermore, the tensile testing assembly includes a connecting seat and at least two electric push rods; the connecting seat is slidably installed in the installation box, the electric push rod is installed below the connecting seat, the end of the electric push rod extends to the top of the workbench, a second pressure sensor is installed on the workbench, and the second pressure sensor is located directly below the electric push rod, and the connecting seat is fixedly connected to the sliding connecting rod.

[0008] Furthermore, an I-shaped slide rail is installed on the inner wall of the installation box, a slide groove matching the I-shaped slide rail is opened on one side of the connecting seat, the connecting seat is slidably installed on the I-shaped slide rail, and a limit seat is installed below the I-shaped slide rail.

[0009] Furthermore, a support seat is installed on the workbench, a push rod is provided above the support seat, and the second pressure sensor is installed between the support seat and the push rod.

[0010] Furthermore, the pressure testing assembly includes an electromagnet, a counterweight assembly and a first pressure sensor; the electromagnet is installed in a mounting box, and the electromagnet is located below the connecting seat, the counterweight assembly is slidably installed on a sliding connecting rod, and the counterweight assembly is located below the electromagnet; a limit block is installed at the end of the sliding connecting rod, a buffer device is provided between the limit block and the counterweight assembly, the upper clamping head is installed below the limit block, and the first pressure sensor is installed between the upper clamping head and the limit block.

[0011] Furthermore, the buffer device includes a spring and a telescopic column; one end of the telescopic column is connected to the limit block, and the other end of the telescopic column is installed with a positioning plate, and the spring is sleeved in the telescopic column.

[0012] Furthermore, the lifting drive assembly includes a transmission screw pair; the transmission screw pair is rotatably installed on the workbench, a mounting seat is installed on the rear side of the mounting box, and the mounting seat is threadedly connected to the transmission screw pair; a positioning cross bar is rotatably installed above the transmission screw pair.

[0013] Furthermore, anchor bolts are screwed onto the four end corners of the workbench.

[0014] Beneficial Effects

[0015] The advantages of the present invention are: the parts are fixed by the upper and lower clamping heads on the device, and then the torque test assembly, pressure test assembly and pressure test assembly installed on the device act on the parts, so as to realize the test of the torque, pressure and tension performance of the parts; and the torque, pressure and tension performance of the parts can be tested on the same device, without the need to use different equipment for the test of various performances of the parts, which greatly reduces the labor intensity of the inspection personnel and effectively improves the work efficiency. In addition, since the torque test assembly, pressure test assembly and pressure test assembly can work independently, therefore, during the test, two of the torque, pressure and tension performance of the parts can be tested at the same time, but the pressure and tension performance of the parts cannot be tested at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front structure of the present invention during pressure testing;

[0017] Figure 2 It is a schematic diagram of the front structure of the present invention during a tensile test;

[0018] Figure 3 for Figure 1 The left structural diagram of ;

[0019] Figure 4 It is a schematic diagram of the internal structure of the installation box of the present invention;

[0020] Figure 5 It is a schematic diagram of the enlarged structure of the buffer component of the present invention.

[0021] Among them: 1-workbench, 2-lower clamping head, 3-installation box, 4-upper clamping head, 5-transmission shaft, 6-drive motor, 7-reduction gear box, 8-connecting seat, 9-electric push rod, 10-second pressure sensor, 11-I-shaped slide rail, 12-limit seat, 13-support seat, 14-top rod, 15-electromagnet, 16-sliding connecting rod, 17-counterweight assembly, 18-first pressure sensor, 19-limit block, 20-buffer device, 21-spring, 22-telescopic column, 23-positioning plate, 24-transmission screw pair, 25-mounting seat, 26-positioning cross bar, 27-anchor bolt. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments, but it does not constitute any limitation to the present invention. Any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0023] See also Figure 1-Figure 5A mechanical device for testing the mechanics of a part of the present invention comprises a workbench 1. A torque test assembly is installed on the workbench 1 for testing the torque performance of the part. A lower clamping head 2 is installed above the torque test assembly for clamping the lower part of the part. A lifting drive assembly is installed on one side of the workbench 1, and a mounting box 3 is installed on one side of the lifting drive assembly. A tensile test assembly and a pressure test assembly are installed in the mounting box 3, and the pressure test assembly is slidably connected with the tensile test assembly through a sliding connecting rod 16. Among them, the lifting drive assembly is used to drive the mounting box 3 to rise or fall, so as to facilitate the replacement of parts; the tensile test assembly is used to test the tensile performance of parts; and the pressure test assembly is used to test the extrusion performance of parts. An upper clamping head 4 corresponding to the lower clamping head 2 is installed below the sliding connecting rod 16 for clamping the upper part of the part. The clamping and positioning of the parts by the upper and lower clamping heads can ensure the stability of the parts during the test.

[0024] Specifically, the torque test assembly includes a power drive assembly, a transmission shaft 5 and a torque sensor. The power drive assembly is installed in the workbench 1, one end of the transmission shaft 5 is installed at the output end of the power drive assembly, the other end of the transmission shaft 5 passes through the workbench 1, the lower clamping head 2 is installed at one end of the transmission shaft 5 passing through the workbench 1, and the torque sensor is installed at the lower end of the transmission shaft 5. After the power drive assembly is started, the transmission shaft 5 is driven to rotate, thereby driving the lower clamping head 2 to rotate. Since the upper clamping head 4 is fixedly mounted on the pressure test assembly, and the pressure test assembly is fixedly mounted in the mounting box 3, the upper clamping head 4 does not rotate. Therefore, during the test, the upper clamping head 4 positions the part, and the lower clamping head 2 drives the part to rotate, thereby realizing the twisting of the part and realizing the test of the torque performance of the part. The torque applied to the part can be monitored by the torque sensor.

[0025] Preferably, the power drive assembly includes a drive motor 6 and a reduction gear box 7. The output end of the drive motor 6 is connected to the input end of the reduction gear box 7, and the output end of the reduction gear box 7 is connected to the transmission shaft 5 through a belt.

[0026] The tensile test assembly includes a connecting seat 8 and two electric push rods 9. The connecting seat 8 is slidably installed in the installation box 3. Specifically, an I-shaped slide rail 11 is installed on the inner wall of the installation box 3, and a slide groove matching the I-shaped slide rail 11 is opened on one side of the connecting seat 8. The connecting seat 8 is slidably installed on the I-shaped slide rail 11, realizing the sliding installation of the connecting seat 8. A limiting seat 12 is installed below the I-shaped slide rail 11 to limit the connecting seat 8 and prevent the connecting seat 8 from sliding out of the I-shaped slide rail 11. The electric push rod 9 is installed below the connecting seat 8, and the end of the electric push rod 9 extends to the top of the workbench 1. A second pressure sensor 10 is installed on the workbench 1, and the second pressure sensor 10 is located directly below the electric push rod 9. The connecting seat 8 is fixedly connected to the sliding connecting rod 16. The sliding connecting rod 16 connected to the connecting seat 8 is lifted up by the electric push rod 9, so that the lower clamping head 2 located below the sliding connecting rod 16 is pulled up, so that the parts installed in the clamping head are pulled up, and the tensile performance test of the parts is realized. In addition, during the test, the electric push rod 9 directly acts on the second pressure sensor 10, so the tensile force applied to the parts can be monitored by the second pressure sensor 10.

[0027] Preferably, a support base 13 is installed on the workbench 1 , a push rod 14 is provided above the support base 13 , and the second pressure sensor 10 is installed between the support base 13 and the push rod 14 .

[0028] The pressure test assembly includes an electromagnet 15, a counterweight assembly 17 and a first pressure sensor 18. The electromagnet 15 is installed in the installation box 3, and the electromagnet 15 is located below the connecting seat 8. Specifically, the electromagnet 15 is installed in the installation box 3 through the electromagnet mounting seat, and the electromagnet mounting seat is provided with a through hole larger than the sliding connecting rod 16, and the sliding connecting rod 16 is fixedly connected to the connecting seat 8 after passing through the through hole. The counterweight assembly 17 is slidably installed on the sliding connecting rod 16, and the counterweight assembly 17 is located below the electromagnet 15. A limit block 19 is installed at the end of the sliding connecting rod 16, and a buffer device 20 is provided between the limit block 19 and the counterweight assembly 17, the upper clamping head 4 is installed below the limit block 19, and the first pressure sensor 18 is installed between the upper clamping head 4 and the limit block 19. Among them, the electromagnet 15 is used to adsorb the counterweight assembly 17.

[0029] When the part needs to be pressure tested, the electromagnet 15 does not adsorb the counterweight assembly 17, and the weight of the counterweight assembly 17 is pressed on the part through the limit block 19 and the lower clamping head 2. In addition, the electric push rod 9 does not contact the top rod 14 at this time, so that the connecting seat 8 slides freely on the I-shaped slide rail 11. Therefore, the pressure acting on the part is not only the gravity of the counterweight assembly 17, but also the weight of the electric push rod 9, the connecting seat 8, the sliding connecting rod 16, the buffer assembly 20, the limit block 19, the first pressure sensor 18 and the upper clamping head 4. However, in actual testing, the weight of the counterweight assembly 17 is much greater than the total mass of these components. Through the action of these weights, the extrusion performance test of the part is achieved. When the part needs to be tensile tested, the electromagnet 15 adsorbs the counterweight assembly 17, so that the electric push rod 9 is not affected by the weight of the counterweight assembly 17 during the process of lifting the sliding connecting rod 16, effectively reducing the load of the electric push rod 9. When the electromagnet 15 releases the counterweight assembly 17, the buffer device 20 buffers the counterweight assembly 17 to avoid rigid contact between the counterweight assembly 17 and the limit block 19, thereby effectively protecting the device.

[0030] The counterweight assembly 17 of this embodiment includes a mounting frame and a counterweight weight. The mounting frame is slidably mounted on the sliding connecting rod 16, and the mounting frame is provided with a plurality of layers of insertion slots, and the counterweight weight is inserted into the insertion slots.

[0031] Preferably, the buffer device 20 includes a spring 21 and a telescopic column 22. One end of the telescopic column 22 is connected to the limit block 19 and the other end is provided with a positioning plate 23, and the spring 21 is sleeved in the telescopic column 22. The positioning plate 23 and the counterweight assembly 17 can be in contact and connected. When the electromagnet 15 adsorbs the counterweight assembly 17, the positioning plate 23 and the counterweight assembly 17 are separated.

[0032] The lifting drive assembly of this embodiment includes a transmission screw pair 24. The transmission screw pair 24 is rotatably installed on the workbench 1, and a mounting seat 25 is installed on the rear side of the mounting box 3, and the mounting seat 25 is threadedly connected to the transmission screw pair 24. A positioning cross bar 26 is rotatably installed above the transmission screw pair 24. When the transmission screw pair 24 rotates, the mounting box 3 threadedly connected to the transmission screw pair 24 can be raised or lowered to facilitate the replacement of parts. It should be noted that the transmission screw pair 24 includes two screws, and the two screws are driven to rotate by a motor.

[0033] Preferably, anchor bolts 27 are screwed onto the four end corners of the workbench 1 to facilitate leveling of the device.

[0034] The working principle of the present invention is: first, the upper clamping head 4 is lifted by the transmission screw pair 24, and then the part is fixed on the lower clamping head 2. Then, the height of the upper clamping head 4 is lowered by the transmission screw pair 24, and the part is fixed in the upper clamping head 4, thereby realizing the fixed installation of the part.

[0035] When testing the torque performance of the part, the drive motor 6 is started, and the drive motor 6 drives the transmission shaft 5 to rotate through the reduction gear box 7, so that the lower clamping head 2 installed on the transmission shaft 5 and the part obtain the force of rotation. However, the upper clamping head 4 prevents the rotation of the part due to the positioning effect on the part, so that the device twists the part, and the torque performance of the part is tested. During the test, the inspection personnel can determine whether the component 17 needs to be configured to squeeze the part according to actual requirements. If the part does not need to be squeezed, the electromagnet 15 is powered on to adsorb the counterweight component 17.

[0036] When testing the tensile performance of a part, the electromagnet 15 is started, and the counterweight assembly 17 is adsorbed by the action of the electromagnet 15. Then the electric push rod 9 is started, and the sliding connecting rod 16 connected to the connecting seat 8 is lifted by the electric push rod 9, so that the lower clamping head 2 located below the sliding connecting rod 16 is pulled upward. Due to the clamping of the part by the lower clamping head 2, the device pulls the part, realizing the tensile performance test of the part.

[0037] When testing the pressure performance of a part, first ensure that the electromagnet 15 is not powered, the electric push rod 9 is not in contact with the push rod 14, and the connecting seat 8 is not in contact with the limit seat 12, so that the counterweight assembly 17 is pressed on the upper clamping head 4 by its own gravity, and then the counterweight assembly is weighted by adding or subtracting the number of counterweights according to the required pressure to achieve the test of the pressure performance of the part.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A mechanical device for testing the mechanics of a part, characterized in that: The invention comprises a workbench (1); a torque test assembly is installed on the workbench (1); a lower clamping head (2) is installed above the torque test assembly; a lifting drive assembly is installed on one side of the workbench (1); a mounting box (3) is installed on one side of the lifting drive assembly; a tensile test assembly and a pressure test assembly are installed in the mounting box (3); the pressure test assembly is slidably connected to the tensile test assembly via a sliding connecting rod (16); an upper clamping head (4) corresponding to the lower clamping head (2) is installed below the sliding connecting rod (16); The tensile test assembly comprises a connecting seat (8) and at least two electric push rods (9); the connecting seat (8) is slidably mounted in the mounting box (3); the electric push rod (9) is mounted below the connecting seat (8); the end of the electric push rod (9) extends above the workbench (1); a second pressure sensor (10) is mounted on the workbench (1), and the second pressure sensor (10) is located directly below the electric push rod (9); the connecting seat (8) is fixedly connected to the sliding connecting rod (16); The pressure test assembly comprises an electromagnet (15), a counterweight assembly (17) and a first pressure sensor (18); the electromagnet (15) is installed in the installation box (3), and the electromagnet (15) is located below the connecting seat (8); the counterweight assembly (17) is slidably installed on the sliding connecting rod (16), and the counterweight assembly (17) is located below the electromagnet (15); a limit block (19) is installed at the end of the sliding connecting rod (16), a buffer device (20) is provided between the limit block (19) and the counterweight assembly (17), the upper clamping head (4) is installed below the limit block (19), and the first pressure sensor (18) is installed between the upper clamping head (4) and the limit block (19); The torque testing assembly comprises a power drive assembly, a transmission shaft (5) and a torque sensor; the power drive assembly is installed in a workbench (1), one end of the transmission shaft (5) is installed at the output end of the power drive assembly, the other end of the transmission shaft (5) passes through the workbench (1), the lower clamping head (2) is installed at the end of the transmission shaft (5) passing through the workbench (1), and the torque sensor is installed at the lower end of the transmission shaft (5).

2. A mechanical device for testing the mechanics of a part according to claim 1, characterized in that: The power drive assembly comprises a drive motor (6) and a reduction gear box (7); the output end of the drive motor (6) is connected to the input end of the reduction gear box (7), and the output end of the reduction gear box (7) is connected to the transmission shaft (5) via a belt.

3. A mechanical device for testing the mechanics of a part according to claim 1, characterized in that: An I-shaped slide rail (11) is installed on the inner wall of the installation box (3); a slide groove matching the I-shaped slide rail (11) is opened on one side of the connecting seat (8); the connecting seat (8) is slidably installed on the I-shaped slide rail (11); and a limit seat (12) is installed below the I-shaped slide rail (11).

4. A mechanical device for testing the mechanics of a part according to claim 1, characterized in that: A support seat (13) is installed on the workbench (1), a push rod (14) is provided above the support seat (13), and the second pressure sensor (10) is installed between the support seat (13) and the push rod (14).

5. A mechanical device for testing the mechanics of a part according to claim 1, characterized in that: The buffer device (20) comprises a spring (21) and a telescopic column (22); one end of the telescopic column (22) is connected to a limit block (19), a positioning plate (23) is installed at the other end of the telescopic column (22), and the spring (21) is sleeved in the telescopic column (22).

6. A mechanical device for testing the mechanics of a part according to claim 1, characterized in that: The lifting drive assembly comprises a transmission screw pair (24); the transmission screw pair (24) is rotatably mounted on the workbench (1); a mounting seat (25) is mounted on the rear side of the mounting box (3); the mounting seat (25) is threadedly connected to the transmission screw pair (24); a positioning cross bar (26) is rotatably mounted above the transmission screw pair (24).

7. A mechanical device for testing the mechanics of a part according to claim 1, characterized in that: Anchor bolts (27) are screwed onto the four end corners of the workbench (1).

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