CN209936844U - Anti-resonance reliability test workbench - Google Patents

Abstract

The utility model discloses an anti-resonance reliability test workbench, which comprises a bottom frame, a fixed table arranged on the bottom frame and an anti-vibration component; wherein, the top surface of the fixed table is provided with a plurality of strips for fixing a to-be-tested table the T-slot of the mechanism; the anti-vibration assembly includes a bearing plate and a weighting rod arranged on two opposite sides of the chassis, the bearing plate is provided with a plurality of evenly distributed storage holes for storing the weighting rod, And the storage holes on the two carrier plates are in one-to-one correspondence. The anti-resonance reliability test table of the utility model can effectively reduce the resonance generated with the rotating parts of the mechanism to be tested, and is beneficial to improve the test accuracy of the vibration amplitude of the rotating mechanism.

Description

An anti-resonance reliability test bench

technical field

The utility model relates to a vibration testing device, in particular to an anti-resonance reliability testing workbench.

Background technique

For rotating mechanisms such as motor spindles and bearings, errors cannot be avoided during the manufacturing and assembly process. It is difficult to completely coincide the center of the rotating part and the fixed part in the rotating mechanism. Therefore, the rotating part rotates eccentrically during actual rotation, and produces Certain vibration; if the vibration amplitude of the rotating parts is too large, it will affect the normal operation of the related equipment. Therefore, after the assembly of the rotating mechanism is completed, it is necessary to conduct vibration detection to ensure that the vibration amplitude of the rotating mechanism is qualified and its reliability. .

During the inspection process, the rotating mechanism to be inspected is generally installed and fixed on the workbench and allowed to run, and the vibration of the rotating part is inspected by the inspection equipment at the same time. However, during the detection process, the rotating part will drive the worktable to vibrate to a certain extent, which will cause the worktable and the rotating part to resonate. Due to the occurrence of resonance, the vibration of the rotating part itself will be affected and the detection accuracy will be affected.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide an anti-resonance reliability test table, which can avoid resonance with the rotating parts, and is beneficial to improve the test accuracy of the vibration amplitude of the rotating mechanism.

The purpose of the present utility model is achieved through the following technical solutions:

An anti-resonance reliability test workbench is characterized in that it includes a bottom frame, a fixed table arranged on the bottom frame, and an anti-vibration assembly; wherein, the top surface of the fixed table is provided with a plurality of strips for fixing the to-be-tested the T-slot of the mechanism; the anti-vibration assembly includes a bearing plate and a weighting rod arranged on two opposite sides of the chassis, the bearing plate is provided with a plurality of evenly distributed storage holes for storing the weighting rod, And the storage holes on the two carrier plates are in one-to-one correspondence.

The working principle of the above anti-resonance reliability test bench is:

The mechanism to be tested is fixed on the fixed table through the T-slot, and starts to run, waiting for the test of the testing mechanism; at this time, the vibration of the entire worktable is judged. Change the weight and weight distribution of the workbench, thereby changing the natural vibration frequency of the workbench to avoid the occurrence of resonance; when adding a weighting rod, find and determine the appropriate weighting position, and place the weighting rod on the corresponding storage hole , to keep the worktable as stable as possible, reduce the vibration consumption of the mechanism to be tested, and improve the test accuracy. Since there are multiple uniform storage holes on the load-bearing plate, during the weighting process, the vibration law of the mechanism to be tested and the worktable can be used to effectively weight the corresponding position of the load-bearing plate, and the weighting rod can be placed to keep the worktable in place. Stability, effectively avoid the resonance phenomenon between the workbench and the mechanism to be tested.

In a preferred solution of the present invention, the bottom frame is provided with a plurality of vertically arranged mounting holes for mounting the bearing plate, and the bearing plate is provided with a plurality of connecting holes matching the mounting holes, so The bearing plate is fixed on the chassis by bolts. In this way, the vertical position of the bearing plate can be adjusted, which further expands the weighting adjustment range of the workbench, which is more conducive to the ability to carry out weighting processing at the corresponding position, ensuring that the workbench can remain stable during the test process, improving the performance of the workbench. Test accuracy.

In a preferred solution of the present invention, the storage holes on one bearing plate are blind holes, and the corresponding positions of each storage hole on the other bearing plate are provided with detachable baffle plates for blocking the weighting rod. The baffle is connected to the carrier plate by bolts. Through the blind holes and baffles, the moving position of the weighted rod is limited, and the weighted rod is prevented from falling off with the vibration of the workbench during the test.

Preferably, one side of the baffle is connected with the bearing plate through a rotating connection structure, the other side is provided with a fixing screw, and one side of the storage hole is provided with a threaded hole matching the fixing screw. In this way, the baffle plate corresponding to each storage hole can be directly set on the bearing plate, and after the weighting rod is placed, the baffle plate can be rotated and the fixing screw can be tightened to realize the fixing of the weighting rod, and the operation is convenient.

Preferably, the storage holes on the carrier plate are arranged horizontally and in multiple rows. Setting such a carrying plate can store more weighted bars, which is beneficial to increase the stability of the workbench.

In a preferred solution of the present invention, the bottom of the fixing table is provided with a plurality of storage grooves, and the plurality of storage grooves are arranged in sequence. When testing the vibration amplitude of the mechanism to be tested, a weighted column can be placed in the storage slot at a suitable position, which can further increase the weight of the entire workbench and improve the stability of the workbench; The position of the weighted rod is matched, which is conducive to effective protection according to the resonance law between the workbench and the mechanism to be tested, and improves the test accuracy.

Preferably, the fixing table includes an upper mounting table and a lower connecting table, the T-shaped slot is arranged on the top surface of the upper mounting table; the storage slot is composed of an upper storage slot and a lower storage slot, wherein the upper storage slot is The grooves are arranged on the bottom surface of the upper installation platform, the lower storage slots are arranged on the top surface of the lower connection platform, and the upper storage slots correspond to the lower storage slots one-to-one. The storage slot is formed by a split structure, which is convenient for processing the storage slot on the fixed table and reduces the processing cost.

Preferably, the cross section of the storage tank is circular.

In a preferred solution of the present invention, an auxiliary weighting frame is provided on the base frame, and the auxiliary weighting frame is suspended on the base frame; wherein, the auxiliary weighting frame includes a base plate and a plurality of connecting rods, and the plurality of connecting rods are connected One end of the rod is connected with the base frame, and the other end is connected with the base plate. Through the setting of the auxiliary weighting frame, the weighting equipment can be directly placed on the bottom plate, which is convenient for the staff to place; it is also possible to choose different weighting methods according to the test requirements of the institution to be tested to improve the adaptability of the entire workbench.

In a preferred solution of the present invention, a plastic buffer table is arranged between the fixed table and the bottom frame. The arrangement of the plastic buffer table is beneficial to improve the stability of the fixed table and to reduce the vibration of the fixed table and the bottom frame. noise generated.

Compared with the prior art, the utility model has the following beneficial effects:

1. The anti-resonance reliability test table of the present invention can effectively avoid resonance with the rotating parts of the mechanism to be tested, and is beneficial to improve the test accuracy of the vibration amplitude of the rotating mechanism.

2. In the process of weighting, the utility model can increase the weighting rod at the corresponding position of the bearing plate according to the vibration law of the mechanism to be tested and the worktable to maintain the stability of the worktable and effectively avoid the resonance phenomenon of the worktable and the mechanism to be tested.

3. The utility model can make adaptive adjustment in the weighting process according to different mechanisms to be tested, which is beneficial to improve the accuracy of the test.

Description of drawings

1 to 3 are schematic diagrams of the structure of the anti-resonance reliability test table of the present invention, wherein, FIG. 1 is a front view, FIG. 2 is a side view (the baffle is not fully shown), and FIG. 3 is a perspective view (the baffle not fully displayed).

FIG. 4 is an enlarged view of I in FIG. 3 .

FIG. 5 is a schematic view of the opening of the baffle in FIG. 4 .

Fig. 6 is a front view of the upper mounting table and the lower connecting table.

FIG. 7 is a schematic diagram of the three-dimensional structure of the weighted column.

FIG. 8 is a schematic three-dimensional structure diagram of a weighting rod.

Detailed ways

The present utility model will be further described below with reference to the embodiments and the accompanying drawings, but the embodiments of the present utility model are not limited thereto.

1-8, the anti-resonance reliability test workbench of this embodiment includes a base frame 1, a fixed table 3 arranged on the base frame 1, and an anti-vibration assembly; wherein, the top surface of the fixed table 3 There are a plurality of T-shaped slots 9 for fixing the mechanism to be tested; the anti-vibration assembly includes a bearing plate 17 and a weighting rod 19 arranged on two opposite sides of the chassis 1, and the bearing plate 17 is provided with There are a plurality of evenly distributed storage holes 16 for storing the weighting rods 19 , and the storage holes 16 on the two carrying plates 17 are in one-to-one correspondence.

Referring to FIG. 2 , the base frame 1 is provided with a plurality of vertically arranged mounting holes 5 for mounting the carrier plate 17 , and the carrier plate 17 is provided with a plurality of connection holes 6 matching the mounting holes 5 , so The bearing plate 17 is fixed on the base frame 1 by bolting. In this way, the vertical position of the bearing plate 17 can be adjusted, which further expands the weighting adjustment range of the workbench, which is more conducive to the weighting process at the corresponding position, so as to ensure that the workbench can remain stable during the test. Improve test accuracy.

Referring to FIGS. 2 to 5 , the storage holes 16 on one carrier plate 17 are blind holes, and the corresponding positions of each storage hole 16 on the other carrier plate 17 are provided with removable stoppers for blocking the weighting rods 19 Plate 20, the baffle plate 20 is connected to the carrier plate 17 by bolts. The blind hole and the baffle plate 20 are provided to limit the moving position of the weighting rod 19, so as to prevent the weighting rod 19 from falling off with the vibration of the workbench during the test.

Referring to FIGS. 2-5 , one side of the baffle 20 is connected to the bearing plate 17 through the rotating connection structure 18 , the other side is provided with a fixing screw 21 , and one side of the storage hole 16 is provided with a matching fixing screw 21 threaded holes. In this way, the baffle plate 20 corresponding to each storage hole 16 can be directly set on the bearing plate 17, and after the weighting rod 19 is placed, the baffle plate 20 can be rotated and the fixing screw 21 can be tightened to realize the fixing of the weighting rod 19. convenient.

Referring to FIG. 2 , the storage holes 16 on the carrier plate 17 are arranged in a horizontal arrangement, and there are two rows. Providing such a carrying plate 17 can store more weighted bars 19, which is beneficial to increase the stability of the workbench.

In the actual measurement process, a fixed sleeve made of non-slip rubber can be arranged on the inner wall of the storage hole. After the weighted rods 19 are placed in the storage holes 16 of the two bearing plates 17 , the fixing sleeves are inserted into the storage holes 16 of the two bearing plates 17 from both ends of the weighted rods 19 , so as to ensure that the weighted rods 19 can be fixed to the bearing plates 17 . Together, it is beneficial for the weighting rod 19 and the workbench to form a fixed whole, avoiding the existence of a gap between the weighting rod 19 and the bearing plate 17, increasing the vibration amplitude and affecting the test accuracy.

Referring to FIGS. 2 , 3 and 6 , a plurality of storage slots 10 are provided at the bottom of the fixing table 3 , the cross-sections of the storage slots 10 are circular, and the storage slots 10 are arranged in sequence. When testing the vibration amplitude of the mechanism to be tested, the weighting column 13 can be placed in the storage tank 10 at a suitable position, which can further increase the weight of the entire workbench and improve the stability of the workbench; The weighted rods 19 on the plate 17 are matched in position, which is conducive to effective protection according to the resonance law between the workbench and the mechanism to be tested, and improves the test accuracy.

Referring to FIG. 6 , the fixing table 3 includes an upper mounting table 12 and a lower connecting table 11 , the T-shaped slot 9 is arranged on the top surface of the upper mounting table 12 ; the storage slot 10 consists of an upper storage slot 14 and a lower storage slot 15, wherein, the upper storage slot 14 is arranged on the bottom surface of the upper installation platform 12, the lower storage slot 15 is arranged on the top surface of the lower connection platform 11, and the upper storage slot 14 corresponds to the lower storage slot 15 one-to-one. . The storage slot 10 is formed by a split structure, which facilitates processing the storage slot 10 on the fixing table 3 and reduces the processing cost.

1-3, the bottom frame 1 is provided with an auxiliary weight frame 4, and the auxiliary weight frame 4 is suspended on the base frame 1; wherein, the auxiliary weight frame 4 includes a bottom plate 7 and a plurality of connecting rods 8. One end of the plurality of connecting rods 8 is connected to the base frame 1 and the other end is connected to the base plate 7 . The setting of the auxiliary weighting frame 4 enables the weighting equipment to be directly placed on the bottom plate 7, which is convenient for the staff to place; it is also possible to select different weighting methods according to the test requirements of the mechanism to be tested, so as to improve the adaptability of the entire workbench.

Referring to FIGS. 1-3 , a plastic buffer table 2 is arranged between the fixing table 3 and the bottom frame 1 , and the setting of the plastic buffer table 2 is beneficial to improve the stability of the fixing table 3 and also help to reduce the number of the fixing table 3 The noise generated when the chassis 1 vibrates.

Referring to FIG. 1 to FIG. 8 , the working principle of the anti-resonance reliability test bench of this embodiment is:

The mechanism to be tested is fixed on the fixed table 3 through the T-slot 9, and starts to run, waiting for the test of the detection mechanism; at this time, the vibration of the entire worktable is judged. If the worktable and the mechanism to be tested resonate, add weight The rod 19 changes the weight and weight distribution of the workbench, thereby changing the natural vibration frequency of the workbench to avoid the occurrence of resonance; when adding the weighting rod 19, find and determine the appropriate weighting position, and place it in the corresponding storage hole A weighted rod 19 is placed on the 16 to keep the worktable as stable as possible, reduce the vibration consumption of the mechanism to be tested, and improve the test accuracy. Since the carrier plate 17 is provided with a plurality of uniform storage holes 16, during the weighting process, the corresponding position of the carrier plate 17 can be effectively weighted according to the vibration law of the mechanism to be tested, so as to maintain the stability of the workbench and effectively Avoid resonance between the workbench and the mechanism to be tested.

The above are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above-mentioned contents, and any other changes, modifications, substitutions, and combinations made without departing from the spirit and principle of the present utility model , simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present invention.

Claims (10)

1. An anti-resonance reliability test workbench is characterized in that, comprising a chassis, a fixed platform arranged on the chassis and an anti-vibration assembly; wherein, the top surface of the fixed platform is provided with a plurality of strips for fixing The T-slot of the mechanism to be tested; the anti-vibration assembly includes a load-bearing plate and a weighting rod arranged on two opposite sides of the chassis, and the load-bearing plate is provided with a plurality of evenly distributed storage for storing the weighting rod holes, and the storage holes on the two carrier plates correspond one-to-one. 2 . The anti-resonance reliability test workbench according to claim 1 , wherein the chassis is provided with a plurality of vertically arranged mounting holes for mounting a carrying board, and the carrying board is provided with a plurality of mounting holes. 3 . There are a plurality of connecting holes matched with the mounting holes, and the bearing plate is fixed on the chassis by bolts. 3. The anti-resonance reliability test bench according to claim 1 or 2, wherein the storage holes on one of the bearing plates are blind holes, and the corresponding parts of each storage hole on the other bearing plate are A detachable baffle plate for blocking the weighting rod is provided, and the baffle plate is connected with the bearing plate through bolts. 4. The anti-resonance reliability test workbench according to claim 3, characterized in that, one side of the baffle is connected with the bearing plate through a rotating connection structure, and the other side is provided with a fixing screw, and the storage hole is One side is provided with threaded holes that match the fixing screws. 5 . The anti-resonance reliability test workbench according to claim 1 , wherein the storage holes on the carrier plate are arranged in a horizontal arrangement, and there are two rows. 6 . 6 . The anti-resonance reliability test workbench according to claim 1 , wherein a plurality of storage slots are arranged at the bottom of the fixed platform, and the plurality of storage slots are arranged in sequence. 7 . 7. The anti-resonance reliability test workbench according to claim 6, wherein the fixing platform comprises an upper mounting platform and a lower connecting platform, and the T-shaped groove is arranged on the top surface of the upper mounting platform; The storage slot is composed of an upper storage slot and a lower storage slot, wherein the upper storage slot is arranged on the bottom surface of the upper installation platform, the lower storage slot is arranged on the top surface of the lower connection platform, and the upper storage slot is connected to the lower storage slot. The slots correspond one by one. 8 . The anti-resonance reliability test workbench according to claim 6 , wherein the cross section of the storage slot is circular. 9 . 9 . The anti-resonance reliability test workbench according to claim 1 , wherein an auxiliary weighting frame is provided on the base frame, and the auxiliary weighting frame is suspended on the base frame; wherein, the auxiliary weighting frame is arranged on the base frame. 10 . The frame includes a base plate and a plurality of connecting rods, one end of the plurality of connecting rods is connected with the base frame, and the other end is connected with the base plate. 10 . The anti-resonance reliability test workbench according to claim 1 , wherein a plastic buffer table is arranged between the fixing table and the bottom frame. 11 .

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