Novel shaft testing device

Abstract

The utility model relates to the technical field of equipment part detection, and particularly discloses a novel shaft testing device, which is characterized in that the left end of an upper end plate is lifted by a testing oil cylinder, the resultant force on a testing shaft is the sum of the pressure of the testing oil cylinder and the stress of a right side pressure sensor by adopting the lever principle; the pressure of the test oil cylinders can be obtained through the pressure intensity of a hydraulic system and the sectional area of a shaft plunger, the test oil cylinders and the pressure sensors which are distributed left and right can be symmetrically distributed, or can be asymmetrically distributed through long and short force arms, or can be configured through a single cylinder and a single sensor, or can be configured through double cylinders or multiple cylinders. According to a load required by a shaft test and a load capacity of a test oil cylinder, the load capacity of the required test oil cylinder is far lower than the test load of the shaft through a lever principle and multi-cylinder configuration, so that the selection range of the test oil cylinder is wider, and a derivative function, namely a pressure sensor, can be replaced by the test oil cylinder; the pressure of all points can be obtained from the pressure of the hydraulic system.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment parts detection, and specifically relates to a novel shaft testing device. Background Art

[0002] Normally, shaft forgings are tested using sample test bars. This test does not require too much tension and can be performed on a conventional tensile testing machine. However, in some specific applications, the shaft is required to be subjected to a body load test. In particular, large shafts require very large test loads. Conventional tensile testing machines can no longer meet the test needs. For example, customizing a tensile or pressure testing machine requires a large investment and a long production cycle, which cannot meet the project production plan. Utility Model Content

[0003] The purpose of the utility model is to provide a novel shaft testing device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A novel shaft testing device comprises an upper end plate, a lower end plate and a test shaft, the upper end plate and the lower end plate are each provided with two groups, and the two groups of the lower end plates are arranged between the two groups of upper end plates, the middle part of the upper end of the upper end plate is provided with a primary assembly mechanism, the middle part of the upper end of the lower end plate is provided with a secondary assembly mechanism, the test shaft passes through and is arranged between the upper end plate and the primary assembly mechanism, and between the lower end plate and the secondary assembly mechanism, the lower ends of the two groups of the upper end plates are connected with a top plate, the upper ends of the two groups of the lower end plates are connected with a bottom plate, the top of the bottom plate on the left side is symmetrically connected with a test cylinder, the output end of the top of the test cylinder is connected to the top plate, the middle part of the top of the bottom plate on the right side is connected with a mounting plate, the middle part of the upper end of the mounting plate is connected with a pressure sensor, and an adjusting pad is provided between the upper end of the pressure sensor and the top plate;

[0006] The primary assembly mechanism includes a primary notch, a primary plate, a positioning notch and a positioning plate, wherein the primary notch is opened in the middle of the top of the upper plate, the primary plate is engaged in the primary notch, the positioning notches are opened symmetrically on both sides of the top of the upper plate, the positioning plate is fitted in the positioning notch, and the positioning plate is connected to the primary plate, the positioning plate is fixedly connected to the upper plate by a positioning bolt, and the primary plate is separated from the primary notch, the positioning notch is separated from the positioning plate, and the reinforcing plate is separated from the reinforcing notch by sliding forward and backward, so that an opening is formed in the middle of the upper part of the upper plate;

[0007] The secondary assembly mechanism includes a secondary slot, a secondary plate, a limiting slot and a limiting plate. The secondary slot is opened in the middle of the top of the lower end plate, the secondary plate is snap-connected in the secondary slot, the limiting slot is symmetrically opened on both sides of the top of the lower end plate, the limiting plate is snap-connected in the limiting slot, and the limiting plate is connected to the secondary plate. The secondary plate and the limiting plate are fixedly connected by positioning bolts. By pulling upward, the secondary plate is separated from the secondary slot, and the limiting plate is separated from the limiting slot, so that an opening is formed in the middle of the upper part of the lower end plate.

[0008] Preferably, the primary assembly mechanism further comprises a reinforcement slot, wherein the reinforcement slot is symmetrically arranged inside the upper end plate, and a plurality of the reinforcement slots are equidistantly arranged vertically, and the reinforcement slot is connected to the primary slot.

[0009] Preferably, the primary assembly mechanism further comprises a reinforcing plate, the reinforcing plate is snap-fitted into the reinforcing notch, and the reinforcing plate is connected to the primary plate;

[0010] The strengthening notch and the strengthening plate are both in a trapezoidal structure, which enhances the stability of the primary plate in the primary notch.

[0011] Preferably, a primary stabilizing plate is connected between the front and rear groups of the upper end plates, and the bottom surface of the primary stabilizing plate is connected to the top plate, so as to enhance the stability and strength of the two groups of upper end plates;

[0012] A gap is left between the primary stabilizing plate and the lower end plate to prevent the primary stabilizing plate and the lower end plate from contacting and influencing each other.

[0013] Preferably, the two groups of lower end panels are symmetrically connected to the left and right sides of the opposite sides, and the upper ends of the secondary stabilizing panels are connected to the bottom plate to enhance the stability and strength of the lower end panels.

[0014] Preferably, semicircular grooves are provided at the bottom end of the first plate, the bottom end of the second plate, the inside of the upper plate and the inside of the lower plate, the front and rear ends of the test shaft both pass through the semicircular grooves, and the outer wall of the test shaft is respectively fitted with the upper plate, the lower plate, the first plate and the second plate, so as to facilitate the setting of the test shaft.

[0015] Preferably, a gap is left between the upper end plate and the lower end plate, and a gap is left between the front and rear groups of the lower end plates to prevent the friction between the upper end plate and the lower end plate and the friction formed between the two groups of lower end plates from affecting the accuracy of the test.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention is in use, the left end of the upper plate is lifted by the test cylinder, and the lever principle is adopted. The resultant force on the test shaft is the sum of the test cylinder pressure and the force on the right pressure sensor. The test cylinder pressure can be obtained through the hydraulic system pressure and the cross-sectional area of ​​the shaft plunger. The left and right distributed test cylinders and pressure sensors can be symmetrically distributed, or asymmetrically distributed with long and short lever arms. A single-cylinder single-sensor configuration can be adopted, or a double-cylinder or multi-cylinder configuration can be selected, which is determined according to the load required for the shaft test and the load capacity of the test cylinder. Through the lever principle and multi-cylinder configuration, the load capacity of the required test cylinder is much lower The test load on the shaft is determined, thereby making the selection range of the test cylinder wider. The derivative function, that is, the pressure sensor, can also be replaced by the test cylinder. The pressure of all points can be obtained from the pressure of the hydraulic system. When the test shaft is bent after the test is completed and is difficult to remove, the first-level plate is separated from the first-level slot, the positioning slot is separated from the positioning plate, and the strengthening plate is separated from the strengthening slot by sliding back and forth, thereby forming an opening in the middle part above the upper plate, and the second-level plate is separated from the second-level slot, and the limiting plate is separated from the limiting slot by pulling upward, thereby forming an opening in the middle part above the lower plate, and the bent test shaft is lifted through the opening, thereby facilitating the removal of the bent test shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a new type of shaft testing device.

[0018] Figure 2 This is a schematic diagram of the secondary plate connection of a new type of shaft testing device.

[0019] Figure 3 Schematic diagram of the upper end plate of a new shaft testing device.

[0020] Figure 4 Schematic diagram of the lower end plate of a new shaft testing device.

[0021] Figure 5 Schematic diagram of the secondary plate of a new shaft testing device.

[0022] Figure 6 Schematic diagram of the primary panel of a new type of shaft testing device.

[0023] In the figure: 1. upper end plate; 2. lower end plate; 3. test shaft; 4. top plate; 5. bottom plate; 6. test cylinder; 7. mounting plate; 8. pressure sensor; 9. adjusting pad; 10. primary notch; 11. primary plate; 12. positioning notch; 13. positioning plate; 14. secondary notch; 15. secondary plate; 16. limiting notch; 17. limiting plate; 18. strengthening notch; 19. strengthening plate; 20. primary stabilizing plate; 21. secondary stabilizing plate; 22. semicircular groove. DETAILED DESCRIPTION

[0024] Example 1

[0025] See also Figure 1-Figure 6 As shown, a new type of shaft testing device comprises an upper end plate 1, a lower end plate 2 and a test shaft 3, the upper end plate 1 and the lower end plate 2 are each provided with two groups, and the two groups of lower end plates 2 are arranged between the two groups of upper end plates 1, a primary assembly mechanism is provided at the middle of the upper end of the upper end plate 1, and a secondary assembly mechanism is provided at the middle of the upper end of the lower end plate 2, the test shaft 3 runs through and is arranged between the upper end plate 1 and the primary assembly mechanism, and between the lower end plate 2 and the secondary assembly mechanism, the lower ends of the two groups of upper end plates 1 are connected with a top plate 4, the upper ends of the two groups of lower end plates 2 are connected with a bottom plate 5, the top of the bottom plate 5 on the left side is symmetrically connected to a test cylinder 6, the output end of the top of the test cylinder 6 is connected to the top plate 4, the middle of the top of the bottom plate 5 on the right side is connected to a mounting plate 7, the middle of the upper end of the mounting plate 7 is connected to a pressure sensor 8, and an adjusting pad 9 is provided between the upper end of the pressure sensor 8 and the top plate 4;

[0026] The primary assembly mechanism includes a primary notch 10, a primary plate 11, a positioning notch 12 and a positioning plate 13. The primary notch 10 is opened in the middle of the top of the upper plate 1. The primary plate 11 is engaged in the primary notch 10. The positioning notches 12 are symmetrically opened on both sides of the top of the upper plate 1. The positioning plate 13 is fitted in the positioning notch 12, and the positioning plate 13 is connected to the primary plate 11. The positioning plate 13 is fixedly connected to the upper plate 1 by positioning bolts. By sliding forward and backward, the primary plate 11 is separated from the primary notch 10, the positioning notch 12 is separated from the positioning plate 13, and the reinforcing plate 19 is separated from the reinforcing notch 18, so that an opening is formed in the upper middle of the upper plate 1.

[0027] The secondary assembly mechanism includes a secondary slot 14, a secondary plate 15, a limiting slot 16 and a limiting plate 17. The secondary slot 14 is opened in the middle of the top of the lower end plate 2, the secondary plate 15 is snap-connected in the secondary slot 14, the limiting slot 16 is symmetrically opened on both sides of the top of the lower end plate 2, the limiting plate 17 is snap-connected in the limiting slot 16, and the limiting plate 17 is connected to the secondary plate 15. The secondary plate 15 and the limiting plate 17 are fixedly connected by positioning bolts. By pulling upward, the secondary plate 15 is separated from the secondary slot 14, and the limiting plate 17 is separated from the limiting slot 16, so that an opening is formed in the middle of the upper part of the lower end plate 2.

[0028] refer to Figure 1-Figure 3 As shown, the primary assembly mechanism also includes a reinforcement slot 18 , which is symmetrically opened inside the upper end plate 1 , and a plurality of reinforcement slots 18 are equidistantly opened vertically, and the reinforcement slot 18 is connected to the primary slot 10 .

[0029] refer to Figure 1 and Figure 6 As shown, the primary assembly mechanism further includes a reinforcing plate 19, which is engaged and connected in the reinforcing notch 18, and the reinforcing plate 19 is connected to the primary plate 11;

[0030] The strengthening notch 18 and the strengthening plate 19 are both trapezoidal structures, which enhance the stability of the primary plate 11 in the primary notch 10 .

[0031] refer to Figure 1-Figure 3 As shown, a primary stabilizing plate 20 is connected between the front and rear sets of upper end plates 1, and the bottom surface of the primary stabilizing plate 20 is connected to the top plate 4, thereby enhancing the stability and strength of the two sets of upper end plates 1;

[0032] A gap is left between the primary stabilizing plate 20 and the lower end plate 2 to prevent the primary stabilizing plate 20 and the lower end plate 2 from contacting and affecting each other.

[0033] refer to Figure 1-Figure 4 As shown, the two groups of lower end panels 2 are symmetrically connected to the left and right sides of the opposite sides with secondary stabilizing panels 21 , and the upper ends of the secondary stabilizing panels 21 are connected to the bottom plate 5 to enhance the stability and strength of the lower end panels 2 .

[0034] refer to Figure 1-Figure 6 As shown, semicircular grooves 22 are provided at the bottom of the primary plate 11, the bottom of the secondary plate 15, the inside of the upper plate 1 and the inside of the lower plate 2. The front and rear ends of the test shaft 3 pass through the semicircular grooves 22, and the outer walls of the test shaft 3 are respectively fitted with the upper plate 1, the lower plate 2, the primary plate 11 and the secondary plate 15, so as to facilitate the setting of the test shaft 3.

[0035] refer to Figure 1-Figure 4 As shown, a gap is left between the upper end plate 1 and the lower end plate 2, and a gap is left between the front and rear groups of lower end plates 2 to prevent the friction between the upper end plate 1 and the lower end plate 2 and the friction formed between the two groups of lower end plates 2 from affecting the accuracy of the test.

[0036] Working principle: the front and rear ends of the test shaft 3 are passed through the semicircular groove 22 in sequence, and the left end of the upper plate 1 is lifted by the test cylinder 6. The lever principle is adopted, and the resultant force on the test shaft 3 is the sum of the pressure of the test cylinder 6 and the force of the right pressure sensor 8. The pressure of the test cylinder 6 can be obtained through the hydraulic system pressure and the cross-sectional area of ​​the shaft plunger. The left and right distributed test cylinders 6 and pressure sensors 8 can be symmetrically distributed, or asymmetrically distributed with long and short lever arms. A single cylinder and single sensor configuration can be adopted, or a double cylinder or multi-cylinder configuration can be selected, which is determined according to the load required for the shaft test and the load capacity of the test cylinder 6. Through the lever principle and multi-cylinder configuration, the required load capacity of the test cylinder 6 is much lower than the test load of the shaft, thereby making the selection range of the test cylinder 6 wider. The derived function, that is, the pressure sensor 8, can also be replaced by the test cylinder 6, and the pressure of all points can be obtained from the hydraulic system pressure.

[0037] When the test shaft 3 is bent after the test and is difficult to remove, the primary plate 11 is separated from the primary slot 10, the positioning slot 12 is separated from the positioning plate 13, and the reinforcing plate 19 is separated from the reinforcing slot 18 by sliding forward and backward, thereby forming an opening in the upper middle part of the upper plate 1, and the secondary plate 15 is separated from the secondary slot 14, and the limiting plate 17 is separated from the limiting slot 16 by pulling upward, thereby forming an opening in the upper middle part of the lower plate 2, and the bent test shaft 3 is lifted through the opening, thereby facilitating the removal of the bent test shaft 3.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel shaft testing device, comprising an upper end plate (1), a lower end plate (2) and a testing shaft (3), characterized in that: The upper end plate (1) and the lower end plate (2) are each provided with two groups, and the two groups of the lower end plate (2) are provided between the two groups of the upper end plate (1), the middle part of the upper end of the upper end plate (1) is provided with a primary assembly mechanism, and the middle part of the upper end of the lower end plate (2) is provided with a secondary assembly mechanism, the test shaft (3) passes through and is provided between the upper end plate (1) and the primary assembly mechanism, and between the lower end plate (2) and the secondary assembly mechanism, and the lower ends of the two groups of the upper end plate (1) are connected with a top plate (4), the upper ends of the two groups of lower end plates (2) are connected to a bottom plate (5), the top of the bottom plate (5) on the left side is symmetrically connected to a test cylinder (6), the output end of the top of the test cylinder (6) is connected to the top plate (4), the middle of the top of the bottom plate (5) on the right side is connected to a mounting plate (7), the middle of the upper end of the mounting plate (7) is connected to a pressure sensor (8), and an adjustment pad (9) is provided between the upper end of the pressure sensor (8) and the top plate (4); The primary assembly mechanism comprises a primary notch (10), a primary plate (11), a positioning notch (12) and a positioning plate (13); the primary notch (10) is arranged at the middle of the top of the upper plate (1); the primary plate (11) is engaged in the primary notch (10); the positioning notch (12) is symmetrically arranged at both sides of the top of the upper plate (1); the positioning plate (13) is fitted in the positioning notch (12); the positioning plate (13) is connected to the primary plate (11); and the positioning plate (13) is fixedly connected to the upper plate (1) by a positioning bolt; The secondary assembly mechanism comprises a secondary notch (14), a secondary plate (15), a limiting notch (16) and a limiting plate (17); the secondary notch (14) is arranged at the middle of the top of the lower end plate (2); the secondary plate (15) is snap-connected in the secondary notch (14); the limiting notch (16) is symmetrically arranged at both sides of the top of the lower end plate (2); the limiting plate (17) is snap-connected in the limiting notch (16); the limiting plate (17) is connected to the secondary plate (15); and the secondary plate (15) and the limiting plate (17) are fixedly connected by positioning bolts.

2. A novel shaft testing device according to claim 1, characterized in that: The primary assembly mechanism also includes a reinforcement notch (18), which is symmetrically arranged inside the upper end plate (1) and has a plurality of reinforcement notches (18) equidistantly arranged vertically. The reinforcement notch (18) is connected to the primary notch (10).

3. A novel shaft testing device according to claim 2, characterized in that: The primary assembly mechanism also includes a reinforcement plate (19), wherein the reinforcement plate (19) is snap-fitted into the reinforcement slot (18), and the reinforcement plate (19) is connected to the primary plate (11); The strengthening notch (18) and the strengthening plate (19) are both in a trapezoidal structure.

4. A novel shaft testing device according to claim 1, characterized in that: A primary stabilizing plate (20) is connected between the front and rear groups of upper end plates (1), and the bottom surface of the primary stabilizing plate (20) is connected to the top plate (4); A gap is left between the primary stabilizing plate (20) and the lower end plate (2).

5. A novel shaft testing device according to claim 1, characterized in that: A secondary stabilizing plate (21) is symmetrically connected to the opposite sides of the two groups of lower end plates (2), and the upper end of the secondary stabilizing plate (21) is connected to the bottom plate (5).

6. A novel shaft testing device according to claim 1, characterized in that: Semicircular grooves (22) are provided at the bottom end of the primary plate (11), the bottom end of the secondary plate (15), the interior of the upper plate (1) and the interior of the lower plate (2); the front and rear ends of the test shaft (3) pass through the semicircular grooves (22), and the outer wall of the test shaft (3) is respectively fitted with the upper plate (1), the lower plate (2), the primary plate (11) and the secondary plate (15).

7. A novel shaft testing device according to claim 1, characterized in that: A gap is left between the upper end plate (1) and the lower end plate (2), and a gap is left between the front and rear groups of the lower end plate (2).

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