Microcomputer-controlled electro-hydraulic servo pressure testing machine

Abstract

The utility model discloses a microcomputer control electro-hydraulic servo pressure testing machine, which relates to the technical field of pressure testing machines, and comprises a machine body, the machine body comprises a working column, a working table is arranged at the upper end part of the working column, and a pressing block for carrying out a pressure test on a workpiece is connected onto the testing machine in a sliding manner. A first clamping assembly used for clamping a workpiece is connected to the testing machine in a sliding mode, and a second clamping assembly used for clamping the workpiece is movably connected to the testing machine. A to-be-tested workpiece is placed on the upper end portion of the workbench, the workpiece is firstly clamped through the first clamping assembly, then the height of the second clamping assembly is adjusted, after the second clamping assembly is adjusted to the height of the middle of the workpiece, the middle of the workpiece is clamped through the second clamping assembly, and then pressure testing can be conducted on materials through the sliding pressing block. And the lower end part and the middle part of the workpiece are clamped and supported, so that the accuracy of the subsequent pressure test on the workpiece is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure testing machine technical field especially is related to a microcomputer control electro -hydraulic servo pressure testing machine. BACKGROUND

[0002] A pressure testing machine is a device used to test the performance and strength of materials or products under pressure. It can simulate a pressure environment, apply pressure to the sample and measure its response. This device is widely used to test the compressive strength of various materials such as metals, plastics, rubbers, and concrete. Through pressure testing, the safety and reliability of materials or products can be evaluated, providing important basis for design, production and use.

[0003] The related technology can refer to the China patent with the publication number CN213364463U, which discloses a constant pressure testing machine capable of clamping and positioning, belonging to the technical field of pressure testing machines. It includes a workbench, a support frame fixedly arranged on the workbench, a hydraulic cylinder arranged on the support frame, a piston rod of the hydraulic cylinder facing the workbench, a pressure block fixed to one end of the piston rod facing the workbench, and a plurality of clamping blocks slidingly arranged on the workbench. The clamping blocks are connected by a driving mechanism that drives the clamping blocks to clamp and position the workpiece simultaneously. The workpiece is placed on the workbench, and the driving mechanism drives the clamping blocks to clamp the workpiece simultaneously.

[0004] For the related technology in the above, if the volume of the workpiece to be tested is too large, the positioning plate can only clamp the lower end of the workpiece. At this time, the stability of the middle part is ignored. Therefore, during the pressure testing process, the middle part of the workpiece may deform due to lack of sufficient support, which will affect the test data. If the volume of the workpiece to be tested is small, its height is less than the height of the pressure block, and it cannot be normally supported. SUMMARY

[0005] To solve the above problems, the present application provides a microcomputer control electro -hydraulic servo pressure testing machine.

[0006] The present application provides a microcomputer control electro -hydraulic servo pressure testing machine, which adopts the following technical scheme:

[0007] A microcomputer control electro -hydraulic servo pressure testing machine, comprising a machine body, the machine body comprising a working column, the upper end of the working column being provided with a workbench, the testing machine being slidingly connected with a pressure block for pressure testing of the workpiece, the testing machine being slidingly connected with a clamping assembly one for clamping the workpiece, and the testing machine being movably connected with a clamping assembly two for clamping the workpiece.

[0008] Optionally, the clamping assembly one comprises two clamping plates one slidably connected to the workbench, the upper end of the workbench is provided with a groove, a double screw rod is arranged in the groove, the double screw rod is rotatably connected to the workbench, the two clamping plates one are threadedly connected to the two ends of the double screw rod in the length direction, and the lower ends of the two clamping plates one are also located in the groove.

[0009] Optionally, the clamping assembly two comprises two drive tables slidably connected to the work column in the height direction, the upper ends of the drive tables are provided with push cylinders, the two push cylinders are oppositely arranged, the piston rods of the two push cylinders are provided with clamping plates two, and the height of the clamping plates two is less than the height of the clamping plates one.

[0010] Optionally, lifting cylinders are arranged on the two sides of the clamping assembly two in the height direction, the lifting cylinders are in one-to-one correspondence with the drive tables, and the piston rods of the lifting cylinders are fixedly connected to the lower ends of the corresponding drive tables.

[0011] Optionally, vertical rails are arranged on the two sides of the work column in the height direction, the vertical rails are in one-to-one correspondence with the drive tables, the drive tables are installed on the same side of the vertical rails, screw rods are rotatably connected to the vertical rails, and the drive tables are threadedly connected with the screw rods in the corresponding vertical rails.

[0012] Optionally, a top table is arranged on the machine body, the top table is located above the workbench, the upper end of the top table is provided with a hydraulic cylinder, and the piston rod of the hydraulic cylinder is fixedly connected to the lower end of the top table.

[0013] In summary, the present application has the following at least one beneficial technical effect:

[0014] 1. The workpiece to be tested is placed on the upper end of the workbench, the workpiece is first clamped by the clamping assembly one, then the height of the clamping assembly two is adjusted, the clamping assembly two is adjusted to the middle height of the workpiece, then the middle part of the workpiece is clamped by the clamping assembly two, and then the sliding pressure block is used to test the material, at this time, the lower end and the middle part of the workpiece are clamped and supported, thereby improving the accuracy of subsequent pressure testing of the workpiece.

[0015] 2. If the height of the workpiece is lower than the height of the clamping plate one, first, the two clamping plates one are moved away from each other, then the two clamping plates two are aligned with the two sides of the workpiece in the height direction by sliding the two drive tables, then the two sides of the workpiece in the height direction are clamped by the two clamping plates two, and then the sliding pressure block is used to test the material, at this time, the workpiece is clamped and supported by the two clamping plates two, thereby improving the accuracy of subsequent pressure testing of the workpiece; the machine body can test larger workpieces or smaller workpieces, and the applicability of the machine body is higher. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the schematic diagram of the overall structure of embodiment one.

[0017] Figure 2 is the schematic diagram of highlighting the bidirectional screw in embodiment one.

[0018] Figure 3 is Figure 2 is the enlarged schematic diagram of part A in

[0019] Figure 4 is the schematic diagram of the overall structure of embodiment two.

[0020] Figure 5 is the schematic diagram of highlighting the vertical rail in embodiment two.

[0021] Reference signs: 1, machine body; 11, top table; 12, hydraulic cylinder; 2, working column; 21, working table; 22, groove; 3, pressing block; 4, clamping assembly one; 41, bidirectional screw; 411, motor one; 42, clamping plate one; 5, clamping assembly two; 51, driving table; 52, pushing cylinder; 53, clamping plate two; 54, vertical rail; 55, threaded rod; 551, motor two; 56, lifting cylinder. DETAILED DESCRIPTION

[0022] The application will be further described in detail below in combination with all the drawings.

[0023] The application discloses a microcomputer-controlled electro-hydraulic servo pressure testing machine.

[0024] Embodiment one:

[0025] Referring to Figure 1 and Figure 2 , a microcomputer-controlled electro-hydraulic servo pressure testing machine comprises a machine body 1, the machine body 1 comprises a working column 2, the upper end of the working column 2 is provided with a working table 21, the testing machine is slidably connected with a pressing block 3 for pressure testing of materials, the testing machine is slidably connected with a clamping assembly one 4 for clamping of materials, and the testing machine is movably connected with a clamping assembly two 5 for clamping of materials. The workpiece to be tested is placed on the upper end of the working table 21, the workpiece is first clamped through the clamping assembly one 4, then the height of the clamping assembly two 5 is adjusted, the clamping assembly two 5 is adjusted to the middle height of the workpiece, then the middle part of the workpiece is clamped by using the clamping assembly two 5, and then the material can be pressure tested by sliding the pressing block 3, at this time, the lower end and the middle part of the workpiece are clamped and supported, thereby improving the accuracy of subsequent pressure testing of the workpiece.

[0026] Referring to Figure 2 and Figure 3The clamping assembly 4 comprises two clamping plates 42 slidably connected to the workbench 21. The upper end of the workbench 21 is provided with a groove 22, and a bidirectional screw rod 41 is arranged in the groove 22. The bidirectional screw rod 41 is rotatably connected to the workbench 21. The two clamping plates 42 are threadedly connected to the two ends of the bidirectional screw rod 41 in the length direction. The lower ends of the two clamping plates 42 are located in the groove 22, and the upper ends of the two clamping plates 42 extend above the workbench 21. One side of the work column 2 in the height direction is provided with a motor 411. The output shaft of the motor 411 is coaxially and fixedly connected to the bidirectional screw rod 41. By rotating the output shaft of the motor 411, the bidirectional screw rod 41 is driven to rotate, and the two clamping plates 42 are driven to move towards each other, thereby clamping the lower end of the workpiece.

[0027] With reference to Figure 1 and Figure 2 The clamping assembly 2 comprises a driving table 51 slidably connected to the two sides of the work column 2 in the height direction. The upper end of the driving table 51 is provided with a push cylinder 52. The two push cylinders 52 are oppositely arranged. The piston rods of the two push cylinders 52 are provided with clamping plates 53. The height of the clamping plate 53 is less than that of the clamping plate 42. The two sides of the clamping assembly 5 in the height direction are provided with lifting cylinders 56. The lifting cylinders 56 correspond to the driving tables 51 one by one. The piston rods of the lifting cylinders 56 are fixedly connected to the lower ends of the corresponding driving tables 51. By operating the piston rods of the lifting cylinders 56 to extend, the two driving tables 51 are driven to move above the workbench 21. The two clamping plates 53 are moved to the position of the middle part of the workpiece, and then the piston rods of the two push cylinders 52 are simultaneously operated to extend, and the workpiece is clamped by the two clamping plates 53.

[0028] The side close to the workpiece of the clamping plate 42 and the clamping plate 53 is provided with a rubber pad for improving the adhesion to the workpiece and improving the stability of clamping the workpiece.

[0029] With reference to Figure 1 and Figure 2 The machine body 1 is provided with a top table 11 located above the workbench 21. The upper end of the top table 11 is provided with a hydraulic cylinder 12. The piston rod of the hydraulic cylinder 12 extends to the lower end of the top table 11 and is fixedly connected to the pressing block 3. By operating the piston rod of the hydraulic cylinder 12 to extend, the pressing block 3 is driven to move towards the workpiece, and then the pressure test of the workpiece can be started. The lower end and the middle part of the workpiece are clamped and supported, thereby improving the accuracy of the subsequent pressure test of the workpiece.

[0030] With reference to Figure 1 and Figure 2, if the height of the workpiece is low, first manipulate the motor 411 to rotate, the bidirectional screw rod 41 rotates, and then drives the two clamping plates 42 to move away from each other; then the workpiece is placed on the upper end of the workbench 21; then the piston rod position of the lifting cylinder 56 is adjusted, and then the two clamping plates two 53 are aligned with the two sides of the workpiece in the height direction, and then the two push cylinders 52 drive the clamping plates two 53 to clamp the two sides of the workpiece in the height direction, and then the sliding block 3 can be used to test the pressure of the material. At this time, the workpiece is clamped and supported by the two clamping plates two 53, so that the accuracy of the subsequent pressure test of the workpiece can be improved. The machine body 1 can test larger workpieces or smaller workpieces, and the applicability of the machine body 1 is high.

[0031] The implementation principle of the microcomputer-controlled electro-hydraulic servo pressure testing machine in the embodiment of the application is as follows: when testing a larger workpiece or a standard workpiece, the workpiece is placed on the upper end of the workbench 21, the lower end of the workpiece is first clamped by the two clamping plates one 42, then the height of the clamping assembly two 5 is adjusted, the clamping assembly two 5 is adjusted to the middle height of the workpiece, and then the middle part of the workpiece is clamped by the clamping assembly two 5. Then the sliding block 3 can be used to test the pressure of the material. At this time, the lower end and the middle part of the workpiece are clamped and supported, so that the accuracy of the subsequent pressure test of the workpiece can be improved. If the height of the workpiece is small, less than the height of the clamping plate one 42, the two clamping plates one 42 are moved away from each other, and then the workpiece is placed on the upper end of the workbench 21. The piston rod position of the lifting cylinder 56 is adjusted to align the two clamping plates two 53 with the two sides of the workpiece in the height direction, and the two push cylinders 52 drive the clamping plates two 53 to clamp the two sides of the workpiece in the height direction. Then the sliding block 3 can be used to test the pressure of the material. At this time, the workpiece is clamped and supported by the two clamping plates two 53, so that the accuracy of the subsequent pressure test of the workpiece can be improved. The machine body 1 can test larger workpieces or smaller workpieces, and the applicability of the machine body 1 is high.

[0032] Embodiment two:

[0033] Referring to Figure 4 and Figure 5 , the difference between embodiment two and embodiment one is that the driving mode of the driving table 51 is different.

[0034] Referring to Figure 4 and Figure 5The vertical rail 54 is provided with a threaded rod 55 rotatingly connected in the vertical rail 54, the driving table 51 is in threaded connection with the threaded rod 55 in the corresponding vertical rail 54; the lower end of each vertical rail 54 is provided with a motor two 551, the output shaft of the motor two 551 is coaxially fixedly connected with the threaded rod 55 on the same side, the output shaft of the two motor two 551 is controlled to rotate, thereby driving the corresponding threaded rod 55 to rotate, thereby driving the two driving tables 51 to go up, the driving table 51 is limited by the vertical rail 54, thereby improving the stability of the driving table 51 sliding in the vertical rail 54, the height of the two clamping plates two 53 is adjusted by the movement of the driving table 51, thereby facilitating clamping the subsequent workpiece, the structure is simple, and the driving is convenient.

[0035] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A microcomputer-controlled electro-hydraulic servo pressure testing machine, comprising a body (1), characterized in that: The machine body (1) includes a working column (2), a worktable (21) is provided at the upper end of the working column (2), a pressure block (3) for performing pressure tests on the workpiece is slidably connected to the testing machine, a clamping assembly one (4) for clamping the workpiece is slidably connected to the testing machine, and a clamping assembly two (5) for clamping the workpiece is movably connected to the testing machine.

2. The microcomputer-controlled electro-hydraulic servo pressure testing machine according to claim 1, characterized in that: The clamping assembly 1 (4) includes two clamping plates 1 (42) slidably connected to the workbench (21). The upper end of the workbench (21) is provided with a groove (22). A bidirectional screw (41) is provided in the groove (22). The bidirectional screw (41) is rotatably connected to the workbench (21). The two clamping plates 1 (42) are threaded to both ends of the bidirectional screw (41) in the length direction. The lower ends of the two clamping plates 1 (42) are also located inside the groove (22). The upper ends of the two clamping plates 1 (42) extend to the top of the workbench (21).

3. The microcomputer-controlled electro-hydraulic servo pressure testing machine according to claim 1, characterized in that: The clamping assembly two (5) includes a drive platform (51) slidably connected to both sides of the working column (2) in the height direction. Each drive platform (51) is provided with a push cylinder (52) at its upper end. The two push cylinders (52) are arranged opposite to each other. Each push cylinder (52) is provided with a clamping plate two (53) at its piston rod. The height of the clamping plate two (53) is less than the height of the clamping plate one (42).

4. The microcomputer-controlled electro-hydraulic servo pressure testing machine according to claim 3, characterized in that: Lifting cylinders (56) are provided on both sides of the clamping assembly two (5) in the height direction. Each lifting cylinder (56) corresponds to a drive platform (51), and the piston rod of each lifting cylinder (56) is fixedly connected to the lower end of the corresponding drive platform (51).

5. A microcomputer-controlled electro-hydraulic servo pressure testing machine according to claim 3, characterized in that: Vertical rails (54) are provided on both sides of the working column (2) in the height direction. The vertical rails (54) correspond one-to-one with the drive platform (51). The drive platforms (51) are all installed on the vertical rails (54) on the same side. A threaded rod (55) is rotatably connected inside the vertical rail (54). The drive platform (51) is threadedly connected to the threaded rod (55) inside the corresponding vertical rail (54).

6. The microcomputer-controlled electro-hydraulic servo pressure testing machine according to claim 1, characterized in that: The machine body is provided with a top platform (11), which is located above the worktable (21). A hydraulic cylinder (12) is provided at the upper end of the top platform (11), and the piston rod of the hydraulic cylinder (12) extends to the lower end of the top platform (11) and is fixedly connected to the pressure block (3).

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