Test bed for measuring damage of hobbing cutter

Abstract

The utility model discloses a test bed for measuring damage of a hobbing cutter, which relates to the field of test beds and comprises a supporting bottom plate, a driving assembly, a hobbing cutter assembly, a rotating speed measuring assembly and a displacement simulation assembly. Wherein the driving assembly comprises a motor supporting plate installed on the supporting bottom plate, a driving motor installed on the motor supporting plate and a connecting rotating shaft connected with the driving end of the driving motor, and the hobbing cutter assembly comprises a hobbing cutter body arranged on the connecting rotating shaft and a hobbing cutter body installed on the hobbing cutter body. The rotating speed measuring assembly comprises a rotating shaft supporting plate installed on the supporting bottom plate. The hobbing cutter main body and the hobbing cutter body are connected through bolts, so that the hobbing cutter main bodies of different damage types can be replaced conveniently; the rotating speed of the hob assembly can be measured in real time through the proximity switch and the metal wafer on the hob body, and different rotating speeds can be adjusted through the motor; meanwhile, the arrangement of corresponding components can also solve the problem that the damage state of the hobbing cutter is not convenient to measure under the actual condition.

Description

Technical Field

[0001] The utility model relates to the technical field of special workpiece testing, in particular to a test bench for measuring hob damage. Background Art

[0002] The roller cutter is installed on the cutterhead at the front end of the shield machine. It is a key component used for excavation, like the teeth of the shield machine. The roller cutter is mainly composed of a cutter ring, a cutter body (sleeve), a cutter shaft, a bearing and an end cover. When in use, the cutterhead of the shield machine rotates, driving the roller cutter to crush the rock wall, crushing the rock wall into a groove until it is destroyed and collapses.

[0003] At present, the cutter ring of the hob wears out at a relatively fast rate. In addition to the more common damage modes such as cutter ring wear and edge chipping, there are many other damage modes. That is, the actual damage forms of the cutter ring are complex and changeable, and different damage states exist at the same time and are mixed with each other. This makes the detection of hob damage difficult. For example, when the existing technology detects the state of the cutter ring, it is easily interfered by the specific environment, which is not conducive to measuring the damage state of the hob and has certain shortcomings. Utility Model Content

[0004] Purpose of the utility model: In view of the above shortcomings, the utility model provides a test bench for measuring hob damage to solve the above problems existing in the prior art.

[0005] Technical solution: A test bench for measuring hob damage, including a supporting base plate, a drive assembly, a hob assembly, a speed measurement assembly and a displacement simulation assembly.

[0006] Among them, the driving component includes a motor support plate installed on the supporting base plate, a driving motor installed on the motor support plate, and a connecting shaft connected to the driving end of the driving motor; the hob assembly includes a hob body arranged on the connecting shaft, and a hob main body installed on the hob body; the speed measuring component includes a shaft support plate installed on the supporting base plate, a proximity switch installed on the shaft support plate, and a measuring body arranged on the side of the hob body away from the driving motor and corresponding to the proximity switch; the displacement simulation component includes a sensor support plate installed on the supporting base plate and located on one side of the hob assembly, and a displacement sensor installed on the sensor support plate.

[0007] In a further embodiment, a bearing groove is provided on the shaft support plate, and a bearing adapted to the end of the connecting shaft away from the drive motor is installed in the bearing groove, so that the end of the connecting shaft is connected to the shaft support plate through the bearing.

[0008] In a further embodiment, a shaft groove is provided through the motor support plate, and the shaft groove is used for the driving shaft of the driving motor to pass through. The motor support plate and the rotating shaft support plate are correspondingly arranged, and the shaft groove and the bearing groove are concentrically arranged.

[0009] In a further embodiment, the measuring body includes a plurality of metal discs uniformly arranged at a predetermined angle on a side of the hob body away from the drive motor, for triggering the proximity switch.

[0010] In a further embodiment, the displacement sensor is mounted on the sensor support plate via a double nut, and the double nut is rotated to adjust the distance from the displacement sensor to the hob body.

[0011] In a further embodiment, the displacement simulation component further includes a transverse adjustment slot and a longitudinal adjustment slot.

[0012] Among them, the transverse adjustment groove is opened on the supporting base plate, the longitudinal adjustment groove is opened on the sensor supporting plate and is arranged corresponding to the transverse adjustment groove, and the transverse adjustment groove and the longitudinal adjustment groove are used to cooperate with corresponding bolts to adjust the position of the sensor support plate on the supporting base plate.

[0013] In a further embodiment, the hob cutter body is connected to the hob cutter main body by bolts, so as to facilitate replacement of the hob cutter main body.

[0014] Beneficial effects: The utility model discloses a test bench for measuring hob damage. The hob main body and the hob body are connected by bolts, which makes it easy to replace hob bodies with different damage types; the rotation speed of the hob assembly can be measured in real time through the proximity switch and the metal disc on the hob body, and different rotation speeds can be adjusted by the motor; by adjusting the double nuts of the displacement sensor, the distance from the displacement sensor to the hob main body can be manually adjusted, thereby simulating the process of hob main body wear; by replacing the cutter rings with different damage states, the process of gradual damage of the cutter rings under various states can be simulated for comparative verification, etc.; at the same time, the setting of the corresponding components can also solve the problem that it is not conducive to measuring the damage state of the hob under actual circumstances, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the utility model as a whole.

[0016] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0017] The reference numerals in the figure are: 1. Support base plate; 2. Rotating shaft support plate; 3. Proximity switch; 4. Metal disc; 5. Hob body; 6. Hob main body; 7. Connecting shaft; 8. Driving motor; 9. Motor support plate; 10. Displacement sensor; 11. Sensor support plate; 12. Horizontal adjustment slot; 13. Longitudinal adjustment slot. DETAILED DESCRIPTION

[0018] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0019] The applicant believes that the existing technology is easily affected by the specific environment when detecting the status of the cutter ring, which is not conducive to measuring the damage status of the hob. It is not only unable to clearly distinguish different damage states, but also not conducive to collecting detection signals under different states and their subsequent analysis and summary, etc., and there are certain shortcomings.

[0020] To this end, the applicant proposed a test bench for measuring hob damage, such as Figure 1-Figure 2 As shown, it includes a supporting base plate 1, a driving component, a hob component, a speed measurement component and a displacement simulation component.

[0021] Among them, the driving component includes a motor support plate 9 installed on the supporting base plate 1, a driving motor 8 installed on the motor support plate 9, and a connecting shaft 7 connected to the driving end of the driving motor 8; the hob assembly includes a hob body 5 arranged on the connecting shaft 7, and a hob body 6 installed on the hob body 5; the speed measurement component includes a shaft support plate 2 installed on the supporting base plate 1, a proximity switch 3 installed on the shaft support plate 2, and a measuring body arranged on the side of the hob body 5 away from the driving motor 8 and corresponding to the proximity switch 3; the displacement simulation component includes a sensor support plate 11 installed on the supporting base plate 1 and located on one side of the hob assembly, and a displacement sensor 10 installed on the sensor support plate 11.

[0022] In this application, the shaft support plate 2 is fixed to one end of the support base plate 1 by four bolts, the motor support plate 9 is fixed to the other end of the support base plate 1 by four bolts, the sensor support plate 11 is installed on the side of the support base plate 1 by bolts, the motor support plate 9 is arranged corresponding to the shaft support plate 2, and a bearing groove is opened on the shaft support plate 2, and a bearing is installed in the bearing groove that is adapted to the end of the connecting shaft 7 away from the drive motor 8, which is used to connect the end of the shaft 7 with the shaft support plate 2 through the bearing. A shaft groove is opened through the motor support plate 9, and the shaft groove is used for the output shaft of the driving end of the drive motor 8 to extend through the setting, and the drive motor 8 is installed on the motor support plate 9 by bolts.

[0023] The cutter body 5 is fixed to the connecting shaft 7, and the cutter body 5 is connected to the cutter body 6 by bolts, which is convenient for replacing the cutter body 6 with different damage types. By replacing the cutter components with different damage states, the process of gradual damage of the cutter components under various states can be simulated for comparative verification. At the same time, the cutter body 5 and the cutter body 6 are connected by bolts, and the cutter body 6 with different damage types can be replaced, such as the cutter body 6 after wear, the cutter body 6 with cracks, and the cutter body 6 after chipping.

[0024] The proximity switch 3 is fixed to the shaft support plate 2 through double nuts.

[0025] The shaft groove and the bearing groove are concentrically arranged to improve the coaxiality of the driving motor 8 and the connecting shaft 7.

[0026] In addition, if Figure 1 As shown, the measuring body includes a plurality of metal discs 4 uniformly arranged at a predetermined angle on the side of the hob body 5 away from the drive motor 8, which are used to trigger the proximity switch 3. According to the triggering frequency of the proximity switch 3, the real-time rotational speed of the hob body 6 can be measured, and different rotational speeds can be adjusted by the drive motor 8.

[0027] In addition, if Figure 1-Figure 2 As shown, the displacement simulation component further includes a transverse adjustment slot 12 and a longitudinal adjustment slot 13 .

[0028] Among them, the transverse adjustment groove 12 is opened on the support base plate 1, and the longitudinal adjustment groove 13 is opened on the sensor support plate 11 and is arranged corresponding to the transverse adjustment groove 12. The transverse adjustment groove 12 and the longitudinal adjustment groove 13 are used to cooperate with the corresponding bolts to adjust the position of the sensor support plate 11 on the support base plate 1.

[0029] At the same time, the displacement sensor 10 is installed on the sensor support plate 11 through a double nut. By rotating the double nut, the distance from the displacement sensor 10 to the hob body 6 can be manually adjusted, thereby simulating the wear process of the hob body 6.

[0030] Based on the above technical features, this application mainly includes the following steps:

[0031] Step 1: Place the support base plate 1 steadily on the workbench, ensure that the support base plate 1 is stable and without shaking, use bolts to fix the shaft support plate 2 to one end of the support base plate 1, ensure that it is firmly fixed and the shaft support plate 2 is perpendicular to the base plate. Similarly, use bolts to fix the motor support plate 9 at the other end of the support base plate 1, ensure that the motor support plate 9 is parallel and stable to the support base plate 1, then select a suitable position on the side of the support base plate 1, and install the sensor support plate 11 with bolts so that it is perpendicular to the support base plate 1 and remains stationary.

[0032] Step 2: Align one end of the connecting shaft 7 with the bearing groove on the shaft support plate 2 and install the bearing, ensuring that the connecting shaft 7 can rotate freely and without obvious shaking, fix the drive motor 8 on the motor support plate 9, ensure that the drive motor 8 is stable and not loose, connect the output shaft of the drive motor 8 to the other end of the connecting shaft 7, use a coupling or a suitable connection method to ensure that the two are highly coaxial and the power is transmitted smoothly.

[0033] Step 3: Fix the cutter body 5 on the connecting shaft 7, use a suitable clamp or locking device to ensure that the cutter body 5 will not loosen due to rotation, install the cutter body 6 on the cutter body 5 with bolts, ensure that the cutter body 6 is firmly installed and can rotate with the cutter body 5, and use double nuts to symmetrically install the proximity switch 3 on the shaft support plate 2, adjust its position so that it can accurately sense the passage of the metal disc 4 on the cutter body 5, and use double nuts to symmetrically install the sensor support plate 11 on the sensor support plate 11, and preliminarily adjust its position through the horizontal adjustment slot 12 and the longitudinal adjustment slot 13 and the corresponding bolts, so that it can be fine-tuned as needed later.

[0034] Step 4: Turn on the power of the drive motor 8, start the drive motor 8, observe the rotation of the hob body 6, ensure that there is no abnormal vibration or noise, adjust the sensitivity of the proximity switch 3 so that it can accurately capture the passing signal of the metal disc 4, and record the trigger frequency through the controller to calculate the real-time rotation speed of the hob body 6, rotate the double nuts of the displacement sensor 10, manually adjust the distance from the sensor to the hob body 6, or adjust it through the transverse adjustment slot 12 and the longitudinal adjustment slot 13 and the corresponding bolts, etc., simulate the change in the distance between the displacement sensor 10 and the hob body 6 during the wear process of the hob body 6, and record the relevant data, replace the hob body 6 or the cutter ring on the hob body 5 with different damage states as needed, simulate multiple damage states, conduct comparative tests, and verify the accuracy and reliability of the test bench.

[0035] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A test bench for measuring hob damage, characterized in that: include: Support base plate; A drive assembly comprising a motor support plate mounted on the support base, a drive motor mounted on the motor support plate, and a connecting shaft connected to a drive end of the drive motor; The hob assembly comprises a hob body provided on the connecting shaft, and a hob main body mounted on the hob body; A rotation speed measuring assembly, comprising a shaft support plate mounted on the support base, a proximity switch mounted on the shaft support plate, and a measuring body disposed on a side of the hob body away from the drive motor and corresponding to the proximity switch; The displacement simulation component includes a sensor support plate installed on the support base plate and located on one side of the hob assembly, and a displacement sensor installed on the sensor support plate.

2. A test bench for measuring hob damage according to claim 1, characterized in that: A bearing groove is provided on the shaft support plate, in which a bearing adapted to the end of the connecting shaft away from the drive motor is installed, for connecting the end of the connecting shaft to the shaft support plate via the bearing.

3. The test bench for measuring hob cutter damage according to claim 2, characterized in that: The motor support plate is provided with a shaft groove, and the shaft groove is used for the driving shaft of the driving motor to pass through; The motor support plate is correspondingly arranged to the rotating shaft support plate, and the shaft groove is concentrically arranged to the bearing groove.

4. The test bench for measuring hob damage according to claim 1, characterized in that: The measuring body includes a plurality of metal discs uniformly arranged at a predetermined angle on a side of the hob body away from the drive motor, and is used to trigger the proximity switch.

5. The test bench for measuring hob damage according to claim 1, characterized in that: The displacement sensor is mounted on the sensor support plate via a double nut, and the double nut is rotated to adjust the distance from the displacement sensor to the hob body.

6. The test bench for measuring hob damage according to claim 1, characterized in that: The displacement simulation component further includes a transverse adjustment slot and a longitudinal adjustment slot; The transverse adjustment slot is provided on the supporting base plate; The longitudinal adjustment slot is provided on the sensor support plate and is arranged corresponding to the transverse adjustment slot; The transverse adjustment slot and the longitudinal adjustment slot are used to cooperate with corresponding bolts to adjust the position of the sensor support plate on the support base plate.

7. The test bench for measuring hob damage according to claim 1, characterized in that: The hob cutter body is connected to the hob cutter main body by bolts, which makes it easy to replace the hob cutter main body.

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