Shaft straightness measuring device

Abstract

The utility model discloses a shaft straightness measuring device, which comprises a clamping mechanism, a rolling wheel mechanism and a detecting instrument, the clamping mechanism is used for fixing one end part of a shaft to be measured, the circumferential end of the shaft to be measured is placed on the rolling wheel mechanism, and the detecting instrument is arranged on one side of the shaft to be measured and is in contact with the circumferential surface of the shaft to be measured. The utility model discloses a shaft straightness measuring device. A clamping mechanism is used for clamping a shaft to be measured and rotating the shaft to be measured. The plurality of rolling wheel mechanisms are arranged at intervals and are used for horizontally supporting the to-be-tested shaft. According to the shaft straightness measuring device, the clamping mechanism and the rolling wheel of the rolling wheel mechanism are utilized to enable the shaft to be measured to rotate slowly, the circumference jumping condition of each point on the shaft to be measured is detected through the detection instrument, and whether the shaft curvature exceeds the use standard or not can be judged. The clamping mechanism is matched with the rolling wheel mechanism, so that the shaft straightness measuring device can be quickly assembled on site to measure the shaft straightness, and a large amount of manpower and material resources required for carrying heavy shafts are effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing, and particularly relates to a device for measuring the straightness of a shaft. Background Art

[0002] During the rotation of the main shaft in a mechanical device, up-and-down movement occurs, namely axial runout. The device for measuring the straightness of a shaft can directly affect the machining quality and efficiency, and has important application value in the fields of mechanical processing, automobile manufacturing, etc. Most of the existing devices for detecting shaft runout are applicable to small shafts and cannot detect large shafts. Therefore, a device for measuring the straightness of a shaft is designed to detect large shafts. Content of the Utility Model

[0003] In order to achieve the above object, the utility model adopts the following technical solutions:

[0004] A device for measuring the straightness of a shaft, comprising a clamping mechanism, a rolling wheel mechanism and a detection instrument. The clamping mechanism fixes one end of the shaft to be measured, the circumferential end of the shaft to be measured is placed on the rolling wheel mechanism, and the detection instrument is arranged on one side of the shaft to be measured and contacts the circumferential surface of the shaft to be measured;

[0005] The rolling wheel mechanism comprises rolling wheels, axle pins, wheel seats, bolt guide rods and guide wheel seats; the axle pins respectively fix the two rolling wheels on the upper part of the wheel seats, the bolt guide rods are installed on the lower part of the wheel seats, the bolt guide rods are divided into a first section rod and a second section rod in the axial direction, the thread directions of the first section rod and the second section rod are opposite, and the two wheel seats are respectively located above the first section rod and the second section rod; the wheel seats are placed in the sliding grooves of the guide wheel seats.

[0006] As a further scheme of the utility model: at least 2 rolling wheel mechanisms are provided.

[0007] As a further scheme of the utility model: the rolling wheel mechanism further comprises a first bolt and a base, the guide wheel seat is placed on the base, the lower part of the guide wheel seat is connected with the first bolt, the guide wheel seat is provided with a thread matching the first bolt, and the first bolt adjusts the movement of the guide wheel seat on the base.

[0008] As a further scheme of the utility model: the rolling wheel mechanism further comprises rolling bearings, and a plurality of the rolling bearings are arranged in the rolling wheels.

[0009] As a further scheme of the utility model: it further comprises a detection instrument support for fixing the detection instrument.

[0010] As a further solution of the utility model: the detection instrument bracket includes a first bracket and a second bracket. The first bracket is fixed on the upper part of the wheel seat. The middle part of the first bracket is hinged with the second bracket, and the second bracket fixes the detection instrument.

[0011] As a further solution of the utility model: the clamping mechanism includes a bearing seat, a bearing, a positioning sleeve, a guide disc, a disc seat, a chuck, a second bolt and a guide rod. The bearing is arranged inside the bearing seat. One end of the bearing seat is connected with the positioning sleeve, and the disc seat is connected to the positioning sleeve through the guide disc. A number of open slots are equally spaced on the disc seat. One end of the guide rod connects the chuck to the open slot through the second bolt, and the other end of the guide rod is connected to the guide disc.

[0012] As a further solution of the utility model: the clamping mechanism further includes a safety part, and the other end of the bearing seat is connected with the safety part.

[0013] As a further solution of the utility model: the clamping mechanism further includes a support frame, the support frame is T-shaped, and the bearing seat is installed on the support frame.

[0014] The beneficial effects of the utility model:

[0015] An axial straightness measuring device, the clamping mechanism is used to clamp the shaft to be measured and rotate the shaft to be measured. A plurality of rolling wheel mechanisms are arranged at intervals to horizontally support the shaft to be measured. The bolt guide rod has two kinds of threads. By rotating the bolt guide rod, the two wheel seats move in opposite directions, and the distance between the two rolling wheels can be changed, so as to adjust the shaft to be measured to the same height as the clamping mechanism. The wheel seat can move horizontally on the guide wheel seat to adjust the distance between the two wheel seats, so as to facilitate the measurement requirements of shafts with various diameter sizes. An axial straightness measuring device uses the clamping mechanism and the rolling wheels of the rolling wheel mechanism to slowly rotate the shaft to be measured, and detects the circumferential runout of each point on the shaft to be measured through a detection instrument, so as to judge whether the shaft bending degree exceeds the use standard. The cooperation between the clamping mechanism and the rolling wheel mechanism can quickly assemble an axial straightness measuring device on site to measure the axial straightness, thus effectively avoiding the large amount of manpower and material resources required for handling heavy shafts. Description of the drawings

[0016] Figure 1 is a front structural schematic diagram of an axial straightness measuring device;

[0017] Figure 2 is an installation structural schematic diagram of the detection instrument;

[0018] Figure 3 is a front structural schematic of the rolling wheel mechanism Figure 1 ;

[0019] Figure 4 is a front structure schematic diagram of a rolling wheel mechanism Figure 2 ;

[0020] Figure 5 is a side structure schematic diagram of a rolling wheel mechanism;

[0021] Figure 6 is a front structure schematic diagram of a clamping mechanism;

[0022] Figure 7 is a side structure schematic diagram of a clamping mechanism.

[0023] As shown in the figure:

[0024] 1 - clamping mechanism, 101 - bearing seat, 102 - bearing, 103 - positioning sleeve, 104 - guide plate, 105 - disc seat, 106 - chuck, 107 - second bolt, 108 - guide rod, 109 - safety component, 110 - support frame,

[0025] 2 - rolling wheel mechanism, 201 - rolling wheel, 202 - axle pin, 203 - wheel seat, 204 - bolt guide rod, 205 - guide wheel seat, 206 - first bolt, 207 - base, 208 - rolling bearing,

[0026] 3 - detection instrument, 301 - first support, 302 - second support;

[0027] 4 - shaft to be measured. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. It should be understood that the present application is not limited by the example embodiments disclosed herein. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0031] In the embodiments of the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] As Figures 1-4 shown, a device for measuring the straightness of a shaft includes a clamping mechanism 1, a rolling wheel mechanism 2, and a detection instrument 3. The clamping mechanism 1 fixes one end of the shaft 4 to be measured, the circumferential end of the shaft 4 to be measured is placed on the rolling wheel mechanism 2, and the detection instrument 3 is arranged on one side of the shaft 4 to be measured and contacts the circumferential surface of the shaft 4 to be measured. The rolling wheel mechanism 2 includes rolling wheels 201, axle pins 202, wheel seats 203, bolt guide rods 204, and guide wheel seats 205. The axle pins 202 respectively fix the two rolling wheels 201 on the upper part of the wheel seats 203. The bolt guide rods 204 are installed on the lower part of the wheel seats 203. The bolt guide rods 204 are divided into a first section rod and a second section rod in the axial direction. The thread directions of the first section rod and the second section rod are opposite to each other. The two wheel seats 203 are respectively located above the first section rod and the second section rod. The wheel seats 203 are placed in the sliding grooves of the guide wheel seats 205.

[0033] In this embodiment, at least two rolling wheel mechanisms 2 are provided.

[0034] Specifically, the clamping mechanism 1 is used to clamp the shaft 4 to be measured and rotate the shaft 4 to be measured. A plurality of rolling wheel mechanisms 2 are arranged at intervals to horizontally support the shaft 4 to be measured. The bolt guide rods 204 are provided with two types of threads. By rotating the bolt guide rods 204, the two wheel seats 203 move in opposite directions, and the distance between the two rolling wheels 201 can be changed to adjust the shaft 4 to be measured to the same height as the clamping mechanism 1. As Figure 3 and 4 shown, the wheel seats 203 can move horizontally on the guide wheel seats 205 to adjust the distance between the two wheel seats 203, facilitating the measurement requirements for shafts of various diameter sizes.

[0035] An axial straightness measuring device uses the clamping mechanism 1 and the rolling wheels 201 of the rolling wheel mechanism 2 to slowly rotate the shaft 4 to be measured. By detecting the circumferential runout of each point on the shaft 4 to be measured with the detection instrument 3, it can be judged whether the shaft bending degree exceeds the service standard. The cooperation between the clamping mechanism 1 and the rolling wheel mechanism 2 can quickly assemble an axial straightness measuring device on site to measure the axial straightness, thus effectively avoiding the large amount of manpower and material resources required for handling heavy shafts.

[0036] In this embodiment, the rolling wheel mechanism 2 further includes a first bolt 206 and a base 207. The guide wheel seat 205 is placed on the base 207. The lower part of the guide wheel seat 205 is connected to the first bolt 206. The guide wheel seat 205 is provided with a thread matching the first bolt 206, and the first bolt 206 adjusts the movement of the guide wheel seat 205 on the base 207.

[0037] Specifically, by rotating the first bolt 206, the guide wheel seat 205 can move horizontally on the base 207 to finely adjust the distance between the rolling wheel mechanisms 2. By adjusting the position and angle of the guide wheel seat 205, it can meet the shaft detection requirements of different sizes and positions, and there is no need to move the rolling mechanism due to inappropriate positions.

[0038] In this embodiment, the rolling wheel mechanism 2 further includes rolling bearings 208, and several rolling bearings 208 are provided in the rolling wheel 201.

[0039] Specifically, since the rolling wheel 201 is relatively large in size, multiple rolling wheels 201 are arranged in the inner hole of the rolling wheel 20 to facilitate the rotation of the rolling wheel 201.

[0040] In this embodiment, it further includes a detection instrument support for fixing the detection instrument 3. The detection instrument support includes a first support 301 and a second support 302. The first support 301 is fixed on the upper part of the wheel seat 203. The middle part of the first support 301 is hinged to the second support 302, and the second support 302 fixes the detection instrument 3.

[0041] Specifically, as Figure 2 shown, the detection instrument 3 is located on one side of the rolling wheel mechanism 2. The detection instrument 3 is fixed to automatically read and save data without manual holding for measurement. The first support 301 and the second support 302 are hinged. Adjust the angle of the second support 302 to make the probe of the detection instrument 3 contact the circumferential surface of the shaft 4 to be measured. The detection instrument 3 is a dial indicator, a micrometer or other intelligent instruments, sensors, etc., which are used to accurately measure the runout of the shaft during rotation. These detection instruments 3 have high sensitivity and high precision and can capture minute displacement changes. When there is axial runout in the shaft 4 to be measured, the detection instrument 3 will capture this displacement change and convert it into an electrical signal or a mechanical signal for display on the indicator.

[0042] In this embodiment, the clamping mechanism 1 includes a bearing seat 101, a bearing 102, a positioning sleeve 103, a guide disc 104, a disc seat 105, a chuck 106, a second bolt 107, and a guide rod 108. A bearing 102 is arranged inside the bearing seat 101. One end of the bearing seat 101 is connected to the positioning sleeve 103. The disc seat 105 is connected to the positioning sleeve 103 through the guide disc 104. A number of open slots are evenly arranged on the disc seat 105. One end of the guide rod 108 connects the chuck 106 to the open slot through the second bolt 107, and the other end of the guide rod 108 is connected to the guide disc 104.

[0043] Specifically, as Figure 6 and 7 shown, the clamping mechanism 1 clamps the shaft 4 to be measured and rotates the shaft 4 to be measured at a certain speed. Three chucks 106 are arranged on the end face of the disc seat 105, and the chucks 106 are arranged in the open slots. The positioning sleeve 103 is used to accurately position the shaft 4 to be measured to ensure that its axis coincides with the center line of the bearing seat 101. Adjust the second bolt 107 to make the chuck 106 clamp the flange of the shaft 4 to be measured, and the shaft 4 to be measured is fixed on the disc seat 105.

[0044] In this embodiment, the clamping mechanism 1 further includes a safety component 109, and the other end of the bearing seat 101 is connected to the safety component 109.

[0045] Specifically, the safety component 109 is a fitting with an overload protection function, such as a friction clutch. During the rotation of the clamping mechanism 1, when an overload situation is encountered, the friction clutch can automatically slip, thereby cutting off the power transmission and preventing the clamping mechanism 1 from being damaged due to overload.

[0046] In this embodiment, the clamping mechanism 1 further includes a support frame 110. The support frame 110 is T-shaped, and the bearing seat 101 is installed on the support frame 110.

[0047] Specifically, the support frame 110 serves as the support structure of the entire clamping mechanism 1 to ensure that the clamping mechanism 1 can be stably installed and operate normally.

[0048] It should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An axial straightness measuring device, characterized in that, It includes a clamping mechanism, a rolling wheel mechanism and a detection instrument. The clamping mechanism fixes one end of the shaft to be measured, the circumferential end of the shaft to be measured is placed on the rolling wheel mechanism, and the detection instrument is arranged on one side of the shaft to be measured and contacts the circumferential surface of the shaft to be measured. The rolling wheel mechanism includes rolling wheels, axle pins, wheel seats, bolt guide rods and guide wheel seats; the axle pins respectively fix the two rolling wheels on the upper part of the wheel seats, the bolt guide rods are installed on the lower part of the wheel seats, the bolt guide rods are divided into a first section rod and a second section rod in the axial direction, the thread directions of the first section rod and the second section rod are opposite to each other, and the two wheel seats are respectively located above the first section rod and the second section rod; the wheel seats are placed in the sliding grooves of the guide wheel seats.

2. The straightness measurement device for the shaft according to claim 1, characterized in that, At least two rolling wheel mechanisms are provided.

3. The straightness measurement device for the shaft according to claim 2, wherein, The rolling wheel mechanism further includes a first bolt and a base. The guide wheel seat is placed on the base, the lower part of the guide wheel seat is connected to the first bolt, the guide wheel seat is provided with a thread matching the first bolt, and the first bolt adjusts the movement of the guide wheel seat on the base.

4. The axial straightness measuring device according to claim 3, characterized in that, The rolling wheel mechanism further includes rolling bearings, and several rolling bearings are provided in the rolling wheels.

5. A shaft straightness measurement device according to claim 2, wherein, It further includes a detection instrument bracket for fixing the detection instrument.

6. The axial straightness measuring device according to claim 5, characterized in that The detection instrument bracket includes a first bracket and a second bracket. The first bracket is fixed on the upper part of the wheel seat, the middle part of the first bracket is hinged to the second bracket, and the second bracket fixes the detection instrument.

7. An axial straightness measuring device according to any one of claims 1-6, characterized in that, The clamping mechanism includes a bearing seat, a bearing, a positioning sleeve, a guide disc, a disc seat, a chuck, a second bolt and a guide rod; the bearing is arranged inside the bearing seat, one end of the bearing seat is connected to the positioning sleeve, the disc seat is connected to the positioning sleeve through the guide disc, several opening grooves are equally spaced on the disc seat, one end of the guide rod connects the chuck to the opening groove through the second bolt, and the other end of the guide rod is connected to the guide disc.

8. An axial straightness measuring device according to claim 7, characterized in that, The clamping mechanism further includes a safety part, and the other end of the bearing seat is connected to the safety part.

9. The straightness measuring device for a shaft according to claim 8, characterized in that, The clamping mechanism further includes a support frame which is T-shaped, and the bearing seat is installed on the support frame.

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