CN220872078U - Radial rigidity measuring equipment and measuring device of tubular member - Google Patents

Abstract

The utility model provides radial rigidity measuring equipment and a measuring device of a cylindrical member, which belong to the field of measurement and specifically comprise a frame body and a radial measuring mechanism arranged on the frame body. The radial measuring mechanism comprises a second positioning part, a second jacking part, a second force sensor and a second displacement sensor which are arranged on the frame body, wherein the second positioning part and the second jacking part are respectively positioned at two radial sides of the piece to be measured, and clamp the piece to be measured from the two sides of the piece to be measured; the second jacking part comprises a jacking block arranged on the frame body, and the second force sensor is arranged on the second jacking part and is used for sensing the jacking force of the second jacking part on the piece to be tested; the second displacement sensor is arranged on the frame body, is positioned between the second positioning part and the second jacking part and is used for sensing the deformation of the to-be-detected piece in the radial direction. The radial rigidity measuring equipment for the cylindrical member solves the technical problem that the conventional measuring equipment is inconvenient to operate in the process of detecting the radial rigidity of different parts of a rotor shaft.

Description

Radial rigidity measuring equipment and measuring device of tubular member

Technical Field

The utility model belongs to the field of measurement, and particularly relates to radial rigidity measurement equipment of a cylindrical member, and a measurement device.

Background

The rotor is a rotating body supported by a bearing. Rotors are the main rotating components in power machines and work machines. The rotor generally includes a winding coil, a core, and a rotor shaft.

The rotor shaft may be divided into a solid shaft and a cylindrical shaft according to specific usage scenarios, and a composite rotor shaft in which the solid shaft and the cylindrical shaft are combined.

The shaft bodies need to be subjected to sampling inspection before leaving the factory, and the inspection contents comprise the hardness, the toughness, the tensile strength, the compressive strength and the like of all parts of the rotor shaft,

When the existing measuring equipment is used for measuring the rotor shaft, the rotor shaft is required to be fixed, then various pushing mechanisms are adopted to apply pressure to the rotor shaft along the radial direction or the axial direction of the rotor shaft, deformation and stress in the radial direction or the axial direction of the rotor shaft are measured at the same time, calculation is carried out according to collected data, and various performance data of the rotor shaft are obtained.

However, in the existing test apparatus, when radial stiffness of different parts of the rotor shaft is detected along the axial direction of the rotor shaft in the process of measuring the rotor shaft, the operation is very inconvenient, and improvement is needed.

Disclosure of utility model

The utility model aims to provide radial rigidity measuring equipment for a cylindrical member, which aims to solve the technical problem that the conventional measuring equipment is inconvenient to operate in the process of detecting radial rigidity of different parts of a rotor shaft.

In order to achieve the above purpose, the utility model adopts the following technical scheme: providing radial rigidity measuring equipment of a cylindrical member, comprising a frame body and a radial measuring mechanism arranged on the frame body;

The frame body is used for accommodating a piece to be detected, and the axial direction of the piece to be detected is parallel to the length direction of the frame body;

the radial measuring mechanism comprises a second positioning part, a second jacking part, a second force sensor and a second displacement sensor which are arranged on the frame body, wherein the second positioning part and the second jacking part are arranged on the frame body at intervals along the horizontal direction and are respectively positioned on the two radial sides of the to-be-measured piece, and the second positioning part and the second jacking part can clamp the to-be-measured piece from the two sides of the to-be-measured piece;

The second jacking part comprises a jacking block which is arranged on the frame body and can be close to or far away from the second positioning part along the radial direction of the to-be-detected piece, the second force sensor is arranged on the second jacking part, and the second displacement sensor is arranged on the frame body and is positioned between the second positioning part and the second jacking part.

Further, the frame body comprises a bottom plate, a top plate and a guide rod, the top plate and the surface of the bottom plate are parallel to each other and are sequentially arranged at intervals from top to bottom, the axis of the guide rod is perpendicular to the surfaces of the bottom plate and the top plate, one end of the guide rod is fixedly connected with the bottom plate, and the other end of the guide rod is fixedly connected with the top plate;

The second positioning part, the top block, the second force sensor and the second displacement sensor are all matched with the guide rod in a sliding way along the axial direction of the guide rod.

Further, the radial rigidity measuring device further comprises a telescopic cylinder arranged on the frame body, a cylinder body of the telescopic cylinder is arranged on the top plate, a telescopic rod of the telescopic cylinder penetrates through the top plate in a sliding mode, and the telescopic rod is used for driving the second positioning part, the second top pressing part, the second force sensor and the second displacement sensor to conduct guiding movement on the guide rod.

Further, the radial measuring mechanism further comprises a sliding connection part, the sliding connection part comprises a third connecting piece corresponding to the telescopic cylinder, the second positioning part, the top block, the second force sensor and the second displacement sensor are all arranged on the third connecting piece, the third connecting piece is connected with the guide rod in a sliding manner along the axial direction of the guide rod, and a third avoidance through hole matched with the to-be-measured piece is formed in the middle position of the third connecting piece.

Further, the second pressing part further comprises a driving component for driving the top block to move;

The driving assembly comprises a fixing seat, a connecting block and a driving rod, the fixing seat is fixed on the third connecting piece, the connecting block is arranged on the fixing seat in a sliding mode along the axis of the driving rod, the top block is arranged on the connecting block, the driving rod is rotatably arranged on the fixing seat by taking the axis of the driving rod as a rotation center, the rod body of the driving rod is in threaded fit with the fixing seat, and the end portion of the driving rod is in rotary connection with the connecting block.

Further, a second fine adjustment assembly is arranged between the top block and the connecting block, the second fine adjustment assembly comprises an adjusting shaft with a rotating shaft parallel to the axis of the driving rod, the adjusting shaft is fixedly connected with an adjusting screw in a coaxial mode, two ends of the adjusting screw in the axial direction protrude out of corresponding shaft ends of the adjusting shaft respectively and are in threaded connection with the top block and the connecting block respectively.

Further, the second positioning portion comprises a connecting frame and a positioning block, the positioning block is movably arranged on the connecting frame along the radial direction of the to-be-detected piece, the second force sensor is arranged on the connecting frame and corresponds to the probe of the second force sensor, an avoidance groove is formed in the middle of the positioning block, and the groove depth direction of the avoidance groove is parallel to the radial direction of the to-be-detected piece and parallel to the length direction of the probe.

Further, the positioning block is provided with a long round through hole, the length direction of the long round through hole is parallel to the radial direction of the piece to be detected, the long round through hole is corresponding to the long round through hole, the connecting frame is provided with a positioning hole, the depth directions of the long round through hole and the positioning hole are all parallel to the axial direction of the guide rod, and the positioning hole is connected with the long round through hole through a positioning nut.

Further, a second linear bearing is sleeved on the guide rod, the edge part of the third connecting piece is fixedly connected with the second linear bearing, and the telescopic rod can drive the second linear bearing to move on the guide rod.

Compared with the prior art, the radial rigidity measuring equipment for the cylindrical member has the beneficial effects that:

According to the utility model, the radial measuring mechanism is arranged, and the plug of the second jacking part extrudes the cylindrical rotor shaft in the process of approaching to the second positioning part, so that the cylindrical rotor shaft is deformed, and the second force sensor and the second displacement sensor sense the radial stress condition and deformation of the cylindrical rotor shaft, so that a measurer or measuring equipment can measure the radial rigidity of the cylindrical rotor shaft according to the sensed value.

Based on the same inventive concept, another object of the present utility model is to propose a measuring device, comprising a radial stiffness measuring device of a tubular member as described above,

In comparison with the prior art, the measuring device of the present utility model has all the advantages of the radial stiffness measuring device of the tubular member described above, and is not described here in any way.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:

FIG. 1 is a three-dimensional view of a measuring device provided by the present utility model;

FIG. 2 is a three-dimensional view of the measuring device according to the present utility model at another angle

FIG. 3 is an enlarged view of the area indicated at A in FIG. 1;

FIG. 4 is an enlarged view of the portion shown at B in FIG. 2;

FIG. 5 is a schematic structural view of a first trimming assembly according to the present utility model;

FIG. 6 is a schematic structural view of a second pressing portion according to the present utility model;

Fig. 7 is a schematic view of magnetic pole distribution between a first cylinder and a second cylinder according to the present utility model.

In the figure:

1. An axial measuring mechanism; 11. a first positioning portion; 111. positioning a tray; 1110. a second avoidance through hole; 112. a telescoping member; 12. a first pressing part; 121. a first cylinder; 122. a second cylinder; 123. a flange plate; 124. a telescopic cylinder; 1241. a cylinder; 1242. a telescopic rod; 13. a first force sensor; 14. a first displacement sensor; 15. a first trimming assembly; 151. a first screw; 152. a second screw; 153. a connecting sleeve; 154. an operation lever;

2. A radial measuring mechanism; 21. a second positioning portion; 22. a second pressing part; 221. a top block; 222. a drive assembly; 2221. a fixing seat; 2222. a connecting block; 2223. a driving rod; 223. a second trimming assembly; 2231. an adjusting shaft; 23. a second force sensor; 24. a second displacement sensor;

3. A frame body; 31. a bottom plate; 32. a top plate; 33. a guide rod;

4. A sliding connection part; 41. a first connector; 42. a first linear bearing; 43. a second connector; 44. a second linear bearing; 45. a third connecting member; 450. a third avoidance through hole;

5. And a piece to be tested.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an azimuth or a positional relationship such as "upper", "lower", "inner", "back", and the like are presented, they are based on the azimuth or the positional relationship shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 7 together, a radial stiffness measurement apparatus for a tubular member according to the present utility model will now be described.

The radial rigidity measuring equipment of the tubular member comprises a frame body 3 and a radial measuring mechanism 2 arranged on the frame body 3; the frame body 3 is used for accommodating the to-be-measured piece 5, and the axial direction of the to-be-measured piece 5 is parallel to the length direction of the frame body 3; the radial measuring mechanism 2 comprises a second positioning part 21, a second jacking part 22, a second force sensor 23 and a second displacement sensor 24 which are arranged on the frame body 3, wherein the second positioning part 21 and the second jacking part 22 are arranged on the frame body 3 at intervals along the horizontal direction and are respectively positioned on two radial sides of the piece 5 to be measured, and the second positioning part 21 and the second jacking part 22 can clamp the piece 5 to be measured from two sides of the piece 5 to be measured; the second pressing part 22 comprises a pressing block 221 which is arranged on the frame body 3 and can be close to or far from the second positioning part 21 along the radial direction of the piece 5 to be measured, and the second force sensor 23 is arranged on the second pressing part 22 and is used for sensing the pressing force of the second pressing part 22 on the piece 5 to be measured; the second displacement sensor 24 is disposed on the frame 3, between the second positioning portion 21 and the second pressing portion 22, and is configured to sense deformation of the workpiece 5 in the radial direction.

In a specific implementation, the to-be-measured piece 5 is placed in the frame body 3 in an upright state by using a forklift or a crown block and other structures, at this time, the to-be-measured piece 5 is deformed in the radial direction by the extrusion of the second pressing portion 22 and the second positioning portion 21, in this process, the second force sensor 23 can sense the compression force of the to-be-measured piece 5, and the second displacement sensor 24 can sense the displacement generated by the compression of the to-be-measured piece 5, so that the rigidity of the to-be-measured piece 5 in the radial direction is obtained by calculating several.

Compared with the prior art, the radial measuring mechanism 2 is arranged, the top head of the second pressing part 22 presses the cylindrical rotor shaft in the process of approaching the second positioning part 21, so that the cylindrical rotor shaft deforms, the second force sensor 23 and the second displacement sensor 24 sense the radial stress condition and deformation of the cylindrical rotor shaft, and a measurer or measuring equipment can measure the radial rigidity of the cylindrical rotor shaft according to the sensed value.

Meanwhile, in this embodiment, through the movement of each structure in the radial measuring mechanism 2 in the length direction of the frame body 3, different positions in the axial direction of the piece to be measured 5 can be measured, so as to be beneficial to collecting more comprehensive radial rigidity data of the piece to be measured 5.

In some embodiments, as shown in fig. 1 and 2 in detail, the frame body 3 includes a bottom plate 31, a top plate 32, and a guide rod 33, the plate surfaces of the top plate 32 and the bottom plate 31 are parallel to each other and sequentially arranged at intervals from top to bottom, the axis of the guide rod 33 is perpendicular to the plate surfaces of the bottom plate 31 and the top plate 32, one end of the guide rod 33 is fixedly connected with the bottom plate 31, the other end is fixedly connected with the top plate 32, and the second positioning portion 21, the top block 221, the second force sensor 23, and the second displacement sensor 24 are slidably adapted to the guide rod 33 along the axial direction of the guide rod 33.

More specifically, the quantity of guide bar 33 is three, and each guide bar 33 is triangular prism shape and arranges, and roof 32 and bottom plate 31 that the top and bottom both ends set up can fix the relative position of each guide bar 33, and then can utilize triangle-shaped's stability to promote the structural strength of support body 3, prevent that support body 3 from rocking.

In addition, in the present embodiment, the guide rod 33 is provided, so that the movement of each member on the frame 3 can be guided.

In some embodiments, the radial stiffness measurement device further includes a telescopic cylinder 124 provided on the frame body 3, a cylinder body of the telescopic cylinder 124 is provided on the top plate 32, a telescopic rod 1242 of the telescopic cylinder 124 is slidably provided through the top plate 32, and the telescopic rod 1242 is used for driving the second positioning portion 21, the second pressing portion 22, the second force sensor 23, and the second displacement sensor 24 to move in a guiding manner on the guiding rod 33.

The present embodiment is beneficial to adjusting the position of each structure in the length direction of the frame body 3 through the extension and contraction of the extension and contraction rod 1242, and can also detect the radial rigidity of different positions in the axial direction of the piece 5 to be detected while being applicable to the piece 5 to be detected with different lengths.

In some embodiments, the radial measuring mechanism 2 further includes a sliding connection portion 4, where the sliding connection portion 4 includes a third connecting member 45 disposed corresponding to the telescopic cylinder 124, the second positioning portion 21, the second pressing portion 22, the second force sensor 23, and the second displacement sensor 24 are all disposed on the third connecting member 45, the third connecting member 45 is slidably connected to the guide rod 33 along the axial direction of the guide rod 33, and a third avoidance through hole 450 adapted to the to-be-measured member 5 is disposed at a middle position of the third connecting member 45.

In comparison with the prior art, the third connecting member 45 in this embodiment provides suitable mounting positions for the second positioning portion 21, the second pressing portion 22, the second force sensor 23 and the second displacement sensor 24.

In some embodiments, in order to drive the top block 221 to press the part 5 to be tested, the second pressing portion 22 includes a driving assembly 222 for driving the top block 221 to move, the driving assembly 222 includes a fixing base 2221, a connecting block 2222 and a driving rod 2223, the fixing base 2221 is fixed on the third connecting piece 45, the connecting block 2222 is slidably disposed on the fixing base 2221 along an axis of the driving rod 2223, the top block 221 is disposed on the connecting block 2222, the driving rod 2223 is rotatably disposed on the fixing base 2221 with its own axis as a rotation center, a shaft body of the driving rod 2223 is in threaded fit with the fixing base 2221, and an end of the driving rod 2223 is rotationally connected with the connecting block 2222.

It should be noted that, the driving rod 2223 is connected to the connection block 2222 through a bearing, so that the driving rod 2223 and the connection block 2222 can maintain synchronous displacement along the axial direction of the driving rod 2223; so set up, this embodiment utilizes the screw adaptation of actuating lever 2223 and fixing base 2221, can make actuating lever 2223 along self axial displacement through actuating lever 2223's rotation, and then utilizes actuating lever 2223's axial displacement to drive connecting block 2222 and remove.

Optionally, for the driving assembly 222, a connection bearing capable of locking the axial displacement of the driving rod 2223 is included, an external thread is formed on the outer surface of the driving rod 2223, an internal thread adapted to the thread of the driving rod 2223 is formed in the connection block 2222, and a plug is connected to the connection block 2222. So set up, through rotating actuating lever 2223, can utilize the screw thread adaptation of connecting block 2222 and actuating lever 2223 to order about the plug along actuating lever 2223's axial displacement, and then make the plug radially oppress the outer wall of piece 5 that awaits measuring along the piece 5 that awaits measuring to survey the piece 5 axial direction rigidity that awaits measuring.

In some embodiments, in order to more precisely adjust the position of the top block 221 in the axial direction of the driving rod 2223, a second fine adjustment assembly 223 is disposed between the top block 221 and the connecting block 2222, the second fine adjustment assembly 223 includes an adjustment shaft 2231, the rotation axis of the adjustment shaft 2231 is parallel to the axis of the driving rod 2223, the adjustment shaft 2231 is fixedly connected with an adjustment screw coaxially, and two axial ends of the adjustment screw protrude from the axial ends of the adjustment shaft 2231 and are respectively in threaded connection with the top block 221 and the connecting block 2222.

In some embodiments, in order to mount the second force sensor 23 on the second positioning portion 21, the second positioning portion 21 includes a connecting frame and a positioning block, the positioning block is adjustably disposed on the connecting frame along a radial direction of the workpiece 5 to be measured, the second force sensor 23 is disposed on the connecting frame, a avoidance groove is disposed at a middle position of the positioning block corresponding to a probe of the second force sensor 23, and a groove depth direction of the avoidance groove is parallel to the radial direction of the workpiece 5 to be measured and parallel to a length direction of the probe.

The embodiment has the advantages that the second force sensor 23 penetrating through the positioning block can synchronously collect the stress of the to-be-measured piece 5 while the clamping of the top block 221 and the positioning block is utilized to radially deform the to-be-measured piece 5, so that the data collected by the second force sensor 23 has more accuracy and reference significance.

In some embodiments, in order to facilitate adjusting the position of the positioning block on the connecting frame, the positioning block is provided with a long circular through hole, the length direction of the long circular through hole is parallel to the radial direction of the to-be-measured piece 5, the connecting frame is provided with a positioning hole corresponding to the long circular through hole, the depth directions of the long circular through hole and the positioning hole are both parallel to the axial direction of the guide rod 33, and the positioning hole and the long circular through hole are connected through a positioning nut.

In some embodiments, in order to make the movement of the third connecting piece 45 on the guide rod 33 smoother, the guide rod 33 is sleeved with the second linear bearing 44, the edge portion of the third connecting piece 45 is fixedly connected with the second linear bearing 44, and the telescopic rod can drive the second linear bearing 44 to move on the guide rod 33.

Based on the same inventive concept, the utility model also proposes a measuring device comprising, as a whole, a radial stiffness measuring apparatus of a tubular member as described above.

In addition, the measuring device in the utility model also comprises an axial measuring mechanism arranged on the frame body, wherein the axial measuring mechanism 1 comprises a first positioning part 11, a first jacking part 12, a first force sensor 13 and a first displacement sensor 14 which are all arranged on the frame body 3, the first jacking part 12 and the first positioning part 11 are sequentially arranged on the frame body 3 at intervals from top to bottom, the first force sensor 13 is arranged at the bottom of the frame body 3 and corresponds to the first positioning part 11, and the first displacement sensor 14 is arranged at the top of the frame body 3 and corresponds to the first jacking part 12; the first jacking part 12 comprises a first cylinder 121 and a second cylinder 122 coaxially sleeved on the periphery of the first cylinder 121, the first cylinder 121 is movably arranged in the frame body 3 along the up-down direction, the second cylinder 122 can be coaxially inserted in the to-be-detected piece 5, the first cylinder 121 and the second cylinder 122 are magnetic components, magnetic poles of the outer wall of the first cylinder 121 repel with magnetic poles of the inner wall of the second cylinder 122, one end of the first cylinder 121 facing the top of the frame body 3 is coaxially fixedly provided with a flange 123, one end of the flange 123 is connected with a telescopic rod 1242, the other end of the flange 123 is connected with the first cylinder 121, and the diameter of the flange 123 is larger than the inner diameter of the to-be-detected piece 5 and is connected with the first displacement sensor 14; the first cylinder 121 is slidably fitted to the guide rod 33, the first pressing portion 12 and the first displacement sensor 14 are provided to the top plate 32, and the first positioning portion 11 and the first force sensor 13 are provided to the bottom plate 31

Compared with the prior art, the radial measuring mechanism 2 is arranged, the top head of the second pressing part 22 presses the cylindrical rotor shaft in the process of approaching the second positioning part 21, so that the cylindrical rotor shaft deforms, the second force sensor 23 and the second displacement sensor 24 sense the radial stress condition and deformation of the cylindrical rotor shaft, and a measurer or measuring equipment can measure the radial rigidity of the cylindrical rotor shaft according to the sensed value.

More specifically, in the present embodiment, the member 5 to be measured is generally a cylindrical rotor shaft, or a rotor shaft with one end being cylindrical, so that the second cylinder 122 can be inserted into the cylindrical rotor shaft to be measured, and at this time, the cylindrical rotor shaft can maintain its positioning in the axial direction by utilizing magnetic repulsion between the first cylinder 121 and the second cylinder 122.

In addition, as for the pressing process of the first pressing portion 12 on the cylindrical rotor shaft, referring to fig. 3 and 7, a first magnetic matching unit is formed on the outer peripheral surface of the first cylinder 121, the first magnetic matching unit includes N poles and S poles alternately arranged in the up-down direction, correspondingly, N poles corresponding to the N poles in the first cylinder 121 and S poles corresponding to the S poles alternately arranged in the up-down direction on the inner surface of the second cylinder 122, when the same magnetic poles in the first cylinder 121 and the second cylinder 122 are in one-to-one correspondence in the horizontal direction, the first cylinder 121 and the second cylinder 122 are kept coaxial due to magnetic repulsion, at this time, when the axial rigidity of the cylindrical rotor shaft needs to be detected, the first cylinder 121 is moved upward in the vertical direction, so that the second cylinder 122 is subjected to downward repulsive force, and further, the embodiment can press the cylindrical rotor shaft by pressing the second cylinder 122, thereby measuring the axial rigidity of the cylindrical rotor shaft.

Compared with the prior art, the embodiment has the following beneficial effects:

First, according to the present utility model, the first cylinder 121 and the second cylinder 122 are provided, and after the second cylinder 122 is inserted into the cylindrical rotor shaft, the position of the workpiece 5 to be measured (i.e., the cylindrical rotor shaft) in the radial direction can be defined by using the magnetic poles that repel each other between the first cylinder 121 and the second cylinder 122, so that the problem that the conventional fixing assembly deforms the rotor shaft due to compression when fixing the rotor shaft, and adversely affects the measurement of the rotor shaft can be solved.

Secondly, by arranging the axial measuring mechanism 1, the first force sensor 13 and the first displacement sensor 14 can measure corresponding values in the process of extruding the cylindrical rotor shaft by the first cylinder 121, so that a measurer or measuring equipment can measure the axial rigidity of the cylindrical rotor shaft according to the values.

It should be noted that, in some specific usage scenarios, the top of the part to be tested 5 (cylindrical rotor shaft) is kept coaxial with other structures in a magnetic adaptation manner after magnetizing, so the first cylinder 121 in this embodiment may also be directly inserted into the magnetic rotor shaft with the end magnetized, meanwhile, in this case, the distribution of the magnetic poles on the outer surface of the first cylinder 121 and the adaptation of the magnetic poles on the inner wall of the rotor magnetic rotor shaft may be referred to above, and the specific testing process for the axial stiffness and the radial stiffness of the magnetic rotor shaft is the same as above, which is not tired here.

In some embodiments, not shown in the drawings, the axial measurement mechanism 1 further includes a first fine adjustment assembly 15 disposed between the telescopic rod 1242 and the flange 123, the first fine adjustment assembly 15 includes a first screw 151, a second screw 152, a connection sleeve 153 and an operation rod 154, the first screw 151, the second screw 152, the connection sleeve 153, the telescopic rod 1242 and the flange 123 are coaxial, the first screw 151 is disposed at an end of the telescopic rod 1242, a first thread is formed at an outer periphery, the second screw 152 is disposed at the flange 123, a second thread having a direction opposite to that of the first thread is formed at an outer periphery, upper and lower ends of the connection sleeve 153 are respectively in thread fit with the first screw 151 and the second screw 152, an axis of the operation rod 154 is perpendicular to an axis of the connection sleeve 153, and the operation rod 154 is disposed at a middle of the connection sleeve 153.

Compared to the prior art, the first trimming assembly 15 in the present embodiment can adjust the axial distance between the first screw 151 and the second screw 152 by rotating the connecting sleeve 153, and in this process, the first screw 151 is fixedly connected with the telescopic rod 1242, so that the flange 123 moves up and down along with the rotation of the second screw 152 to drive the connecting sleeve 153 to move along the axial direction of the telescopic rod 1242. In the above adjustment process, the first fine adjustment component 15 can more accurately adjust the position of the first cylinder 121 in the up-down direction by using the characteristics of high thread adaptation precision and self-locking effect, so as to improve the measurement precision of the piece 5 to be measured.

In addition to the above possible embodiments, the first fine tuning assembly 15 further includes another alternative embodiment, in detail, referring to fig. 5, the first fine tuning assembly 15 includes a connecting sleeve 153, a first screw 151 and a second screw 152 fixedly installed at two axial ends of the connecting sleeve 153, and the connecting sleeve 153, the external threads of the first screw 151 and the second screw 152 are opposite in rotation direction, the first screw 151, the second screw 152 and the connecting sleeve 153 are coaxially arranged, a connecting ring in threaded fit with the first screw 151 is fixedly installed in the middle of the first connecting member 41 corresponding to the first screw 151, the connecting ring is fixedly connected with the telescopic rod 1242, a threaded hole in threaded fit with the second screw 152 is provided in the middle of the flange 123, so that by rotating the connecting sleeve 153, the flange 123 can be driven to approach or separate from the first connecting member 41, and further, the first cylinder 121 is driven to move along the up-down direction by moving the flange 123.

In some embodiments, the sliding connection 4 further comprises a first connection 41, a first linear bearing 42, a second connection 43, and a second linear bearing 44; the first linear bearing 42 is sleeved on the guide rod 33, one end of the first connecting piece 41 is fixedly connected with the telescopic rod 1242, the other end of the first connecting piece 41 is connected with the first linear bearing 42, and the first screw 151 is fixedly connected with the telescopic rod 1242 through the first connecting piece 41; the second linear bearing 44 is sleeved on the guide rod 33, the middle part of the second connecting piece 43 is fixedly connected with the flange 123, and the edge part of the second connecting piece 43 is connected to the outer peripheral surface of the second linear bearing 44; and the third connecting member 45 is connected to an end of the second linear bearing 44 remote from the first linear bearing 42 in the axial direction of the guide rod 33.

In a specific implementation process, the first connecting piece 41 is in a strip shape, the second connecting piece 43 includes three connecting strips that are connected in a closing manner, before the telescopic rod 1242 moves downward in the radial measuring mechanism 2, the to-be-measured piece 5 is transferred onto the first positioning portion 11 on the bottom plate 31 by a tool such as a forklift, and then the first positioning piece and the first cylinder 121 are close to each other, so that the to-be-measured piece 5 is positioned in the frame 3.

Compared with the prior art, the present embodiment can utilize the rolling fit between the first linear bearing 42 and the guide rod 33 to make the guiding movement of the first cylinder 121 on the frame body 3 smoother and more accurate by providing the first linear bearing 42. In addition, through the second avoidance through hole 1110 that opens at the middle part of third connecting piece 45, after piece 5 (the tubular rotor shaft) that awaits measuring is placed on positioning tray 111, third connecting piece 45 can utilize the second to dodge through hole 1110 and descend to the position of predetermineeing, makes things convenient for radial measuring mechanism 2 to detect the radial rigidity of tubular rotor shaft.

In some embodiments, the first positioning portion 11 includes a positioning tray 111 movably disposed in the middle of the bottom plate 31 along the axial direction of the guide rod 33, the disc surface of the positioning tray 111 is parallel to the disc surface of the bottom plate 31, the first force sensor 13 is disposed in the middle of the bottom plate 31, and the middle of the positioning tray 111 is provided with a second avoidance through hole 1110 corresponding to the first force sensor 13.

In a specific implementation process of the embodiment, the positioning tray 111 may be mounted on the bottom plate 31 by using a telescopic cylinder, and a telescopic direction of the telescopic cylinder is perpendicular to a plate surface of the bottom plate 31; in this embodiment, the devices such as a forklift are placed on the positioning tray 111, so that the positioning tray 111 drives the cylindrical rotor shaft to move downwards under the action of the telescopic cylinder, and the bottom of the cylindrical rotor shaft abuts against the first force sensor 13, so as to detect the axial stress condition of the cylindrical rotor shaft.

Compared with the prior art, the positioning tray 111 in this embodiment can support the cylindrical rotor shaft conveyed by the forklift, so as to prevent the cylindrical rotor shaft from directly colliding with the first force sensor 13 when conveyed into the frame 3.

In some embodiments, in order to adjust the position of the positioning tray 111 in the vertical direction, the first positioning portion 11 includes a telescopic member 112 provided on the bottom plate 31, the telescopic direction of the telescopic member 112 is parallel to the axial direction of the guide rod 33, and two ends of the telescopic member 112 are sequentially connected to the positioning tray 111 and the bottom plate 31 from top to bottom, and the number of the telescopic members 112 is 3 and uniformly arranged in the horizontal direction around the axis of the telescopic rod 1242.

Compared with the prior art, the position of the positioning tray 111 in the vertical direction can be adjusted by using the expansion and contraction of the expansion and contraction member 112 by arranging the expansion and contraction member 112, so that the piece 5 to be measured reaches the predetermined position, and the rigidity of the piece 5 to be measured in the axial direction and the radial direction can be conveniently detected.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The radial rigidity measuring equipment of the tubular member is characterized by comprising a frame body (3) and a radial measuring mechanism (2) arranged on the frame body (3);

The frame body (3) is used for accommodating a piece (5) to be detected, and the axial direction of the piece (5) to be detected is parallel to the length direction of the frame body (3);

The radial measuring mechanism (2) comprises a second positioning part (21), a second jacking part (22), a second force sensor (23) and a second displacement sensor (24) which are arranged on the frame body (3), wherein the second positioning part (21) and the second jacking part (22) are arranged on the frame body (3) at intervals along the horizontal direction and are respectively positioned on the two radial sides of the piece to be measured (5), and the second positioning part (21) and the second jacking part (22) can clamp the piece to be measured (5) from the two sides of the piece to be measured (5);

The second jacking part (22) is arranged on the frame body (3) in a mode of being close to or far away from the jacking block (221) of the second positioning part (21) along the radial direction of the to-be-detected piece (5), the second force sensor (23) is arranged on the second jacking part (22), and the second displacement sensor (24) is arranged on the frame body (3) and is located between the second positioning part (21) and the second jacking part (22).

2. The radial rigidity measuring apparatus of the tubular member according to claim 1, wherein the frame body (3) includes a bottom plate (31), a top plate (32) and a guide rod (33), the plate surfaces of the top plate (32) and the bottom plate (31) are parallel to each other and are sequentially arranged at intervals from top to bottom, the axis of the guide rod (33) is perpendicular to the plate surfaces of the bottom plate (31) and the top plate (32), one end of the guide rod (33) is fixedly connected with the bottom plate (31), and the other end is fixedly connected with the top plate (32);

The second positioning part (21), the top block (221), the second force sensor (23) and the second displacement sensor (24) are all matched with the guide rod (33) in a sliding manner along the axial direction of the guide rod (33).

3. The radial rigidity measuring apparatus of a tubular member according to claim 2, further comprising a telescopic cylinder (124) provided to the frame body (3), a cylinder body of the telescopic cylinder (124) being provided to the top plate (32), a telescopic rod (1242) of the telescopic cylinder (124) being slidably provided through the top plate (32), the telescopic rod (1242) being for driving the second positioning portion (21), the second pressing portion (22), the second force sensor (23) and the second displacement sensor (24) to move in a guided manner on the guide rod (33).

4. A radial stiffness measuring device of a tubular member according to claim 3, characterized in that the radial measuring mechanism (2) further comprises a sliding connection part (4), the sliding connection part (4) comprises a third connection piece (45) arranged corresponding to the telescopic cylinder (124), the second positioning part (21), the top block (221), the second force sensor (23) and the second displacement sensor (24) are all arranged on the third connection piece (45), the third connection piece (45) is slidably connected to the guide rod (33) along the axial direction of the guide rod (33), and a third avoidance through hole (450) adapted to the part (5) to be measured is arranged at the middle position of the third connection piece (45).

5. The radial stiffness measurement device of a tubular member according to claim 4, wherein the second pressing portion (22) further comprises a driving assembly (222) for driving the movement of the top block (221);

The drive assembly (222) comprises a fixed seat (2221), a connecting block (2222) and a drive rod (2223), the fixed seat (2221) is fixed in a third connecting piece (45), the connecting block (2222) is arranged on the fixed seat (2221) in a sliding mode along the axis of the drive rod (2223), a top block (221) is arranged on the connecting block (2222), the drive rod (2223) takes the axis of the drive rod (2223) as a rotation center, is rotationally arranged on the fixed seat (2221), a rod body of the drive rod (2223) is in threaded fit with the fixed seat (2221), and the end portion of the drive rod (2223) is connected with the connecting block (2222) in a rotating mode.

6. The radial rigidity measuring apparatus of the tubular member according to claim 5, wherein a second fine adjustment assembly (223) is provided between the top block (221) and the connection block (2222), the second fine adjustment assembly (223) includes an adjustment shaft (2231) whose rotation axis is parallel to the axis of the driving rod (2223), the adjustment shaft (2231) is fixedly connected with an adjustment screw coaxially, and both ends of the adjustment screw in the axial direction protrude from the corresponding shaft ends of the adjustment shaft (2231) respectively and are screwed with the top block (221) and the connection block (2222) respectively.

7. The radial rigidity measuring apparatus of the tubular member according to claim 4, wherein the second positioning portion (21) includes a connecting frame and a positioning block, the positioning block is movably provided on the connecting frame in a radial direction of the member to be measured, the second force sensor (23) is provided on the connecting frame, a probe corresponding to the second force sensor (23) is provided with a relief groove in a middle position of the positioning block, and a groove depth direction of the relief groove is parallel to a radial direction of the member to be measured (5) and parallel to a length direction of the probe.

8. The radial rigidity measuring apparatus of the cylindrical member according to claim 7, wherein the positioning block is provided with a long circular through hole, the length direction of the long circular through hole is parallel to the radial direction of the member to be measured (5), a positioning hole is provided on the connecting frame corresponding to the long circular through hole, the depth directions of the long circular through hole and the positioning hole are both parallel to the axial direction of the guide rod (33), and the positioning hole and the long circular through hole are connected by a positioning nut.

9. The radial rigidity measuring device of tubular member according to claim 4, wherein a second linear bearing (44) is sleeved on the guide rod (33), the edge portion of the third connecting piece (45) is fixedly connected with the second linear bearing (44), and the telescopic rod can drive the second linear bearing to move on the guide rod.

10. A measuring device comprising a radial stiffness measuring apparatus of the tubular member according to any one of claims 1 to 9.