CN209230473U - A kind of large-diameter measurement, detection device - Google Patents
A kind of large-diameter measurement, detection device Download PDFInfo
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- CN209230473U CN209230473U CN201920194873.9U CN201920194873U CN209230473U CN 209230473 U CN209230473 U CN 209230473U CN 201920194873 U CN201920194873 U CN 201920194873U CN 209230473 U CN209230473 U CN 209230473U
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- roller
- detection device
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Abstract
The utility model discloses a kind of large-diameter measurements, detection device, are equipped with measuring scale through housing central section, shell both ends are respectively equipped with strut, and the first strut, the length direction of the second strut are identical as measuring scale length direction, and the lower end of strut is hinged with roller.Further include: the first rack gear and the second rack gear；First rack gear and the second rack gear are slidably connected inside housings, and first rack gear one end is stretched out shell end and connect with the first strut, and the other end that shell is stretched out in one end of the second rack gear is connect with the second strut, and the first rack gear and the second rack gear pass through gear engaged transmission.The large-diameter measurement, detection device, overall structure is simple, and manufacturing cost is low；The gauge head of measuring scale runs through the center of tested cylinder；By the reading of measuring instrument, the actual size of large-diameter is obtained；And roller realizes that line contacts with tested diameter of axle cylindrical surface, to increase wearability and keep the stability of workpiece, further ensures the precision of the measuring device.
Description
Technical field
The utility model relates to the measuring equipment structure-design technique neck of major axial diameter is measured and detected using mechanical means
Domain more particularly to a kind of large-diameter measurement, detection device.
Background technique
Measurement large-diameter (diameter is greater than 500mm), common measurer had vernier caliper, outside micrometer, high metric etc. direct
The method of measurement.The method that saddle type gauge, steel hand tape, standard roller etc. measure indirectly can also be used.Due to the ruler of heavy parts
Very little and weight increases, and increases the operating difficulties of measurement instrument, it is difficult to be adjusted to optimum position, large-scale slide calliper rule with greater need for two people with
Upper completion.
The more and more various large-sized workpiece of contact of large and medium-sized enterprise.The method for usually measuring big axis can be divided into two
Class: the absolute method of measurement and relative measurement method.The absolute method of measurement is mainly measured using outside micrometer, vernier caliper etc..
Since outside micrometer and vernier caliper are two-point contact measurements to big axis measurement, measurement error sharply increases as size increases
Greatly, measurement accuracy is seriously affected.
It can be seen that in the prior art, in the measuring device of large-diameter, there are operating difficulties, measurement error are larger,
Be inconvenient to operate with the defect that personnel carry and operate with.
Utility model content
It, can be in view of this, manufacturing cost is low the main purpose of the utility model is to provide a kind of overall structure is simple
Guarantee large-diameter measurement, the detection device of measurement accuracy.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of large-diameter measurement, detection device, comprising: shell is equipped with measuring scale, the shell through the housing central section
Both ends are respectively equipped with strut, and the strut includes: identical first strut of structure size and the second strut, first strut,
The length direction of second strut is identical as the measuring scale length direction, and the lower end of the strut is hinged with roller.
In a preferred embodiment, further includes: the first rack gear and the second rack gear；First rack gear and the second tooth
Item is slidably connected at the enclosure interior, and first rack gear one end is stretched out shell end and connect with the first strut, and described second
The other end that shell is stretched out in one end of rack gear is connect with the second strut, and first rack gear and the second rack gear are engaged by gear
Transmission.
In a preferred embodiment, the gear is located at close to the side of the measuring scale.
In a preferred embodiment, the shell includes: left shell, right shell body, upper housing and lower case；It is described
Left shell and right shell body are connected as one at upper side position by upper housing, the both ends of the upper housing respectively with lower case
Both ends be fixedly connected.
In a preferred embodiment, the increment face of described gear the upper side and lower side has been respectively fixedly connected with positioning and has turned
Disk, the upper housing and lower case offer rotating drum close to the side of gear respectively, and the locating turntable adaptation is connected to institute
It states inside rotating drum；Rotating hole is opened up through the upper housing, the locating turntable center on the upside of the gear is fixedly connected with rotation
Bar, the swingle are pierced by the upper housing by rotating hole.
In a preferred embodiment, the swingle upper end connects rotating handle.
In a preferred embodiment, angle measurement unit is equipped between the swingle and rotating hole.
In a preferred embodiment, the left shell and right shell body respectively include: side plate, end plate and upper plate, institute
State side plate one end it is vertical be fixedly connected with end plate, on the upside of the end plate and side plate respectively with the end of upper plate, side is fixed connects
Connect so that the side plate of left shell, end plate, upper plate difference face side it is opening-like so that the side plate of right shell body, end plate, on
The side that plate distinguishes face is opening-like.
In a preferred embodiment, the left shell and the opposite setting that is centrosymmetric of right shell body, the left housing
Side of the upper plate of body and right shell body far from side plate is fixedly connected with the both sides of the edge of upper housing respectively；It is opened on the inside of the side plate
Equipped with first sliding groove, the first sliding block is equipped at the back that first rack gear, the second rack gear are oppositely arranged engaging tooth, described first
Sliding block adapts to cooperation with first sliding groove and is slidably connected.
In a preferred embodiment, the two sides up and down of the engaging tooth of first rack gear and the second rack gear are set respectively
There is the second sliding block, the upper housing and lower case two sides offer second sliding slot respectively, and second sliding block and second sliding slot are suitable
It should cooperate and be slidably connected.
In a preferred embodiment, first rack gear and the second rack gear bottom offer strut slot respectively.
In a preferred embodiment, first rack gear and the second rack gear stretch out one end of shell, in the branch
First strut and the second strut are respectively articulated in bar slot.
In a preferred embodiment, the size of the strut slot and first strut and/or the second strut
Size is identical.
In a preferred embodiment, the inner sidewall of the strut slot has buckle, makes the buckle to the strut
Limit is in the strut slot.
In a preferred embodiment, the strut slot and strut articulated position are equipped with convex buckle, make the convex buckle pair
The strut is limited in the strut position vertical with strut slot.
In a preferred embodiment, the roller includes: roll left column and right roller, column and the right roller of rolling left
It is detachably connected at strut and roller articulated position.
In a preferred embodiment, two sides of the shell are removably connected with roller button respectively, described
Side of the roller button far from shell is arc-shaped groove body, and two inner walls of the arc-shaped groove body are equipped with circular arc protrusion, is made described
Roller is buckled in the arc-shaped groove body.
In a preferred embodiment, the roller of the shell left side or right side buckles side and is equipped with survey
Ruler is buckled.
The large-diameter measurement of the utility model, detection device, have the following beneficial effects:
The large-diameter measurement, detection device are equipped with measuring scale through housing central section, and shell both ends are respectively equipped with strut, prop up
The lower end of bar is hinged with roller；First rack gear and the second rack gear are slidably connected inside housings, and shell is stretched out in first rack gear one end
End is connect with the first strut, and the other end that shell is stretched out in one end of the second rack gear is connect with the second strut, the first rack gear with
Second rack gear is oppositely arranged and is engaged by gear and driven.It solves in the prior art, for existing in large-diameter measurement device
Operating difficulties, measurement error are larger, it has not been convenient to operate with the defect that personnel carry and operate with.The large-diameter measurement, inspection
Device is surveyed, overall structure is simple, and manufacturing cost is low；The roller below two struts of measuring device need to be only placed in coaxial direction
In tested large-diameter outer circle, and the gauge head of measuring scale is made to pass through the center of tested cylinder；By the reading of measuring instrument, big axis is obtained
The actual size of diameter；And roller realizes that line contacts with tested diameter of axle cylindrical surface, to increase wearability and keep the stabilization of workpiece
Property, further ensure the precision of the measuring device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to a kind of large-diameter measurement of embodiment of the disclosure, detection device；
Fig. 2 is according to a kind of large-diameter measurement of embodiment of the disclosure, cross section view of the detection device at gear；
Fig. 3 is shown in Fig. 1 according to a kind of large-diameter measurement of embodiment of the disclosure, the left view of detection device；
Fig. 4 is according to the left view of the large-diameter measurement of disclosure another kind embodiment, detection device；
Fig. 5 is the cross of large-diameter measurement, detection device at measuring scale shown in Fig. 4 according to disclosure another kind embodiment
Cross-sectional view；
Left view when Fig. 6 is large-diameter measurement, the detection device storage state according to disclosure another kind embodiment；
Top view when Fig. 7 is large-diameter measurement, the detection device storage state according to disclosure another kind embodiment；
Fig. 8 is according to disclosure large-diameter measurement, detection device measurement, detection principle diagram.
[primary clustering symbol description]
1, shell, 11, left shell, 12, right shell body, 13, upper housing, 14, lower case；
101, side plate, 102, end plate, 103, upper plate；
15, the first sliding block, the 16, second sliding block；
2, measuring scale, 21, instrument board, 22, measuring rod；
3, strut, the 31, first strut, the 32, second strut；
4, roller, 41, roll left column, 42, right roller；
5, the first rack gear, the 6, second rack gear；
7, gear, 71, locating turntable, 72, swingle, 73, rotating handle, 74, position fixing handle；
8, strut slot, 9, roller button, 91, arc-shaped groove body；
10, measurement ruler button, 010, gauge rod button.
Specific embodiment
With reference to the accompanying drawing and the embodiments of the present invention to the large-diameter measurement of the utility model, detection device make into
One step detailed description.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
As shown in figure 8,
(R+r)2-(R-h)2=l2 (1)
It substitutes into: 2R=D 2r=d h=H-r
In formula:
D: tested outer diameter, mm；
D: roller cylinder column diameter, mm；
L: strut and measuring scale centre distance, mm；
H: standard gauge block packet size, mm；
H: measuring rod lower end is at a distance from roller center, mm.
That is: it only needs accurately to measure l and H, can accurately calculate tested outer diameter diameter.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the large-diameter measurement, detection device, comprising: component is wrapped up and is protected and is made
Shell 1 (in order to further facilitate the portable of whole device, can be equipped with grab handle in device upper surface, be easy to use people
Member operates with), and can horizontally there be a certain distance, avoid measuring size smaller, error is larger, so that shell can be with
Guarantee the accuracy of measurement data.It is equipped with measuring scale 2 in the middle part of shell 1, realizes to roller bottom surface and surveys by measuring scale 2
The measurement end vertical range (H) of gage 2 realizes detection and measurement process.1 both ends of shell are respectively equipped with strut 3, and strut 3 wraps
It includes: identical first strut 31 of structure size and the second strut 32, the first strut 31, the length direction of the second strut 32 and measurement
2 length direction of ruler is identical (that is: the first strut 31, the second strut 32 and measuring scale 2 are each perpendicular to 1 length direction of shell).In order to
It avoids measuring surface from point contact occur, influences measurement accuracy, be hinged with roller 4 in the lower end of strut 3, cylindrical roller 4 is realized
It realizes that line contacts with tested diameter of axle cylindrical surface, to increase wearability and keep the stability of workpiece, further ensures the survey
Measure the precision of device.
Further for guaranteeing to extend on 1 length direction of shell, realization device meets the different size of diameter of axle and surveys
Amount, and can be convenient the size for reducing whole device, so as to easily be carried to device.The device further include: first
Rack gear 5 and the second rack gear 6；First rack gear 5 and the second rack gear 6 are slidably connected inside shell 1, and shell is stretched out in 5 one end of the first rack gear
1 end of body is connect with the first strut 31, and the other end that shell is stretched out in one end of the second rack gear 6 is connect with the second strut 32, the
One rack gear 5 and the second rack gear 6 pass through 7 engaged transmission of gear.(that is: the side of the first rack gear 5 and the second rack gear 6 equipped with engaging tooth
Opposite setting, and pass through the engagement of gear 7 driving between the first rack gear 5 and the second rack gear 6).One gear 7 is same
When engage the first rack gear 5 and the second rack gear 6 so that, 7 synchronous drive the first rack gear 5 of gear and the second rack gear 6 are mobile, protect
The accuracy for demonstrate,proving L, can especially guarantee that the size of measuring scale two sides is identical, and then guarantee the accuracy of measurement.The large-diameter
Measurement, detection device, overall structure is simple, and manufacturing cost is low；Only need to be by device face large-diameter outer wall to be measured, it can meter
Calculation obtains diameter or detection large-diameter actual size to be measured and standard-sized consistency.
In order to realize gear 7 can longer distance driving the first rack gear 5 and the second rack gear 6, gear 7 is located at close to survey
The side of gage 2.That is: gear 7 is located on the middle vertical plane of shell 1 along its length, and in the side of measuring scale 2.Due to measurement
Ruler 2 must be arranged at 1 medium position of shell, and gear 7 can drive the first rack gear 5 and the second rack gear 6 mobile, expand measurement, detection
Range.
In order to guarantee that total is more reasonable, especially facilitate processing and manufacturing and assembly.The shell 1 includes: to be located at shell
Left shell 11, the right shell body 12 of 1 left and right sides of body；It is located at the upper housing 13 and lower case 14 of 1 upper and lower sides of shell；Left shell 11 and the right side
Shell 12 is connected as one at upper side position by upper housing 13, the both ends of upper housing 13 both ends with lower case 14 respectively
Portion is fixedly connected.Shell 1 carries out position-limiting action to the position of the first rack gear 5, the second rack gear 6 and gear 7, guarantees whole device
Globality.
In order to keep 7 structure of gear of driving effect more stable, guarantee to the first rack gear 5 and the driving of the second rack gear 6 more
Precisely.It is respectively fixedly connected with locating turntable 71 in the increment face of 7 the upper side and lower side of gear, upper housing 13 and lower case 14 are close
The side of gear 7 offers rotating drum respectively, and the adaptation of locating turntable 71 is connected to inside rotating drum.By rotating drum to positioning
71 defined position of turntable guarantees that gear 7 and locating turntable 71 can only be in the center axis rotations of the rotating drum, the rotation at this certainly
Turning intracavitary chamber is cylinder bowl configurations.
In order to connect driving gear with extraneous driving part, rotating hole is opened up through upper housing 13,7 upside of gear is determined
Position 71 center of turntable is fixedly connected with swingle 72, and swingle 72 is pierced by upper housing 13 by rotating hole.
It can be fixedly connected with rotating handle 73 in the upper end of swingle 72, operator can realize by rotating handle
Driving to gear, certain swingle upper end also can connect other driving parts.
For convenience to the survey measurements of l value, angle measurement unit is equipped between swingle 72 and rotating hole.Pass through angle
Spend measuring device to 72 rotation angle measurement of swingle, according to the transmission ratio of gear and the first rack gear, the second rack gear, and then can be with
The size of l value is calculated.Primary zeroing, multiple sized first rack gear, 5 He are realized to measuring scale 2 and angle measurement unit
Second rack gear, more than 6 measurements use.It in the specific use process, can be according to use condition, to the defeated of angle measurement unit
Value is directly l value out, although how some in structure design in this way, facilitate worker and reads use.
Preferably, left shell 11 and right shell body 12 respectively include: side plate 101, end plate 102 and upper plate 103, side plate 101
One end it is vertical be fixedly connected with end plate 102, end plate 102 and 101 upside of side plate respectively with the end of upper plate 103, side is fixed connects
It connects, so that the side of the side plate 101 of left shell 11, end plate 102, upper plate 103 difference face is opening-like, so that right shell body 12
The side that side plate 101, end plate 102, upper plate 103 distinguish face is opening-like.Each left shell 11 and right shell body 12 can be one
Body formed manufacture.
The first rack gear 5 and the second rack gear 6 are cooperatively connected with shell 1 for convenience.In left shell 11 and right shell body
The upper plate 103 of the 12 opposite settings that are centrosymmetric, left shell 11 and right shell body 12 far from the side of side plate 101 respectively with upper housing
13 both sides of the edge are fixedly connected；First sliding groove is offered on the inside of side plate 101, is set relatively in the first rack gear 5, the second rack gear 6
The back for setting engaging tooth is equipped with the first sliding block 15, and the first sliding block 15 adapts to cooperation with first sliding groove and is slidably connected.First sliding groove and
The quantity of first sliding block 15 can be arranged multiple according to specific structure.Of course, being provided in each sliding slot to sliding block supporting surface
Back-up roller wheel reduces frictional force, makes whole device so that the sliding friction between sliding block and sliding slot is become rolling friction
Using more smooth.
In order to keep the sliding of the first rack gear 5 and the second rack gear 6 inside housings more stable, guarantee the position of two rollers 4
It sets and its equal with the distance between the measuring scale 2 at 1 middle part of shell.In the upper of the engaging tooth of the first rack gear 5 and the second rack gear 6
Lower two sides are respectively equipped with the second sliding block 16, and upper housing 13 and 14 two sides of lower case offer second sliding slot, the second sliding block 16 respectively
Cooperation is adapted to second sliding slot to be slidably connected.
Location hole is offered in 1 upside of shell or 1 side of shell, it may be assumed that is set respectively to the first rack gear 5 and the second rack gear 6
Have at least two location holes, and in each location hole be equipped with positioning screw, by positioning screw front end to 5 He of the first rack gear
Second rack gear, 6 positioning action is fixedly connected with position fixing handle 74 in positioning screw tail portion, passes through 74 rotational positioning spiral shell of position fixing handle
Nail, thus easily to 6 positioning action of the first rack gear 5 and the second rack gear.I.e. in measurement process, first is adjusted by gear 7
The extension elongation of rack gear 5 and the second rack gear 6 is driving positioning screw to the first rack gear 5 and the second rack gear 6 by position fixing handle 74
Positioning action.
It, can be to all parts (roller of measurement effect especially in non-working condition in order to keep whole device portable
4, strut 3 and measuring scale 2) protective effect.It is offered respectively in the first rack gear 5 and 6 bottom of the second rack gear to 31 He of the first strut
The strut slot 8 of second strut, 32 memory action (mainly to 3 memory action of strut).
Preferably, the first rack gear 5 and the second rack gear 6 stretch out one end of shell 1, and first is respectively articulated in strut slot 8
Bar 31 and the second strut 32.
Certainly, for the position-limiting action preferably to the first strut 31 and/or the second strut 32.The size of strut slot 8 with
The size of first strut 31 and/or the second strut 32 is identical.
Further, for the further restriction effect of strut 3 to rotation into strut slot 8, guarantee that strut 3 is stable
It is stored in strut slot 8.The inner sidewall of strut slot 8 has buckle, makes buckle to the limit of strut 3 in strut slot 8.That is: in strut
The two sidewalls of slot 8 are equipped with circular arc protrusion, and the radius of circular arc protrusion is larger, preferably of same size with strut slot 8.Circular arc is convex
The two sidewalls for being symmetrically arranged at strut slot 8 are acted, to 3 position-limiting action of strut.
When in order to guarantee that strut 3 is in running order, can be stable be in is in the first rack gear 5 and the second rack gear 6
Plumbness.Strut slot 8 and 3 articulated position of strut are equipped with convex buckle, so that convex buckle is limited in strut 3 to strut 3 and hang down with strut slot 8
Straight position.The convex buckle is semi-cylindrical hill, strut 3 can be made to rotate around hinged place, but have certain limit to strut 3
Effect.
In order to facilitate the disassembly and installation of whole device, especially avoiding being mutually perpendicular to structure causes whole device volume huge
Greatly, not Portable belt.It is also easily damaged device in further carrying process, it is inaccurate to lead to measurement accuracy, or even be unable to complete
Measure work.Roller 4 includes: roll left column 41 and right roller 42, and roll left column 41 and right roller 42 are in strut 3 and 4 hinge position of roller
The place of setting is detachably connected.Preferably, 41 end of column is rolled left equipped with threaded end, in right roller 42 close to threaded hole is equipped with, is led to
The cooperation of the opinion of threaded end and threaded hole is crossed, realizes the connection rolled left between column and right roller 42.Right roller 42 is in screw thread
Tapping outer wall is smaller, and hinge hole can be opened up by meeting strut ends, and right 42 end of roller can insert at threaded hole
Enter hinge hole, keep right roller 42 and hinge hole hinged, guarantee the detachable installation of roller 4, and can guarantee roller 4 smoothly
Rotation reduces in roller 4 in measurement or detection process and with the friction between measurement workpiece surface, abrasion, shadow is used for a long time
Ring measurement accuracy.
As shown in Fig. 1, Fig. 5, Fig. 6 and Fig. 7, in order to further facilitate storage and carrying to roller 4, make whole device
Globality is stronger.Two sides of shell 1 are removably connected with roller button 9 respectively, and side of the roller button 9 far from shell 1 is circle
Arcuation groove body 91, and two inner walls of arc-shaped groove body 91 are equipped with circular arc protrusion, are buckled in roller 4 in arc-shaped groove body 91.I.e.
Arc-shaped groove body 91 includes curved bottom and side wall, and side wall is vertical shape structure, and the size of side wall is smaller, in side wall close to circular arc
The circular arc protrusion seamlessly transitted with curved bottom is equipped on the inside of shape groove body 91, so that roller 4 can more smoothly be caught in circle
In arcuation groove body 91.
The storage of measuring scale 2 is placed for convenience, is equipped on the upside of the roller button 9 of 1 left side of shell or right side
Measurement ruler button 10.
When measuring scale 2 can use for twisted-coil comparator, especially measuring scale 2 as a detection device, it is not necessarily to
The variation of larger size selects twisted-coil comparator that can meet use.
Measuring scale 2 is preferably that perhaps Centigrade scale micrometer or Centigrade scale upper end are typically provided with instrument board 21 to micrometer, under
End is measuring rod 22.In order to keep device lighter and handier, especially 4 size of roller is unnecessary too big.But due to measuring scale 2
For 21 diameter of instrument board for accuracy of reading, usual structure is larger.In order to meet structure design, preferred measurement ruler button 10 includes: instrument
Watch buckle and gauge rod button 010, instrument button diameter is identical as 21 diameter of instrument board, and instrument buckles side opening, and instrument button is far from shell 1
Side is also open, and stretches out instrument board 21 by side mouth, but can guarantee the fixed function to instrument board 21.It is preferred that
, the area of instrument button is the 1/2~2/3 of 21 size of instrument board.Bullet can be equipped in position between instrument button and gauge rod slot 010
Property bandage, can be by elastic bands to measuring scale fixed function.Of course, being also arc-shaped for gauge rod slot 010, circular arc is straight
Diameter is identical as 22 diameter of measuring rod.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (10)
1. a kind of large-diameter measurement, detection device characterized by comprising shell (1) is equipped in the middle part of the shell (1)
Measuring scale (2), shell (1) both ends are respectively equipped with strut (3), and the strut (3) includes: that structure size is first identical
Bar (31) and the second strut (32), first strut (31), the length direction of the second strut (32) and the measuring scale (2) length
Degree direction is identical, and the lower end of the strut (3) is hinged with roller (4)；
Further include: the first rack gear (5) and the second rack gear (6)；First rack gear (5) and the second rack gear (6) are slidably connected at institute
It is internal to state shell (1), described first rack gear (5) one end is stretched out shell (1) end and connect with the first strut (31), second tooth
The other end that shell is stretched out in one end of item (6) is connect with the second strut (32), first rack gear (5) and the second rack gear (6)
Pass through gear (7) engaged transmission.
2. large-diameter measurement according to claim 1, detection device, which is characterized in that the gear (7) is located at close to institute
State the side of measuring scale (2).
3. large-diameter measurement according to claim 1, detection device, which is characterized in that the shell (1) includes: left housing
Body (11), right shell body (12), upper housing (13) and lower case (14)；The left shell (11) and right shell body (12) are in upper side position
Place is connected as one by upper housing (13), and both ends of the both ends of the upper housing (13) respectively with lower case (14) are fixed
Connection.
4. large-diameter measurement according to claim 3, detection device, which is characterized in that described gear (7) the upper side and lower side
Increment face be respectively fixedly connected with locating turntable (71), the upper housing (13) and lower case (14) close to gear (7) one
Side offers rotating drum respectively, and the locating turntable (71) adapts to be connected to inside the rotating drum；Through the upper housing
(13) rotating hole is opened up, locating turntable (71) center on the upside of the gear (7) is fixedly connected with swingle (72), the swingle
(72) upper housing (13) are pierced by by rotating hole.
5. large-diameter measurement according to claim 3, detection device, which is characterized in that the left shell (11) and right shell
Body (12) respectively include: side plate (101), end plate (102) and upper plate (103), the vertical fixed company in one end of the side plate (101)
It connects end plate (102), is fixedly connected, makes with end, the side of upper plate (103) respectively on the upside of the end plate (102) and side plate (101)
The side for obtaining side plate (101), end plate (102), upper plate (103) the difference face of left shell (11) is opening-like, so that right shell body
(12) side plate (101), end plate (102), the side of upper plate (103) difference face are opening-like；
The left shell (11) and the opposite setting that is centrosymmetric of right shell body (12), the left shell (11) and right shell body (12)
Upper plate (103) is fixedly connected with the both sides of the edge of upper housing (13) respectively far from the side of side plate (101)；In the side plate
(101) inside offers first sliding groove, is equipped at the back that first rack gear (5), the second rack gear (6) are oppositely arranged engaging tooth
First sliding block (15), first sliding block (15) adapt to cooperation with first sliding groove and are slidably connected.
6. large-diameter measurement according to claim 5, detection device, which is characterized in that first rack gear (5) and second
The two sides up and down of the engaging tooth of rack gear (6) are respectively equipped with the second sliding block (16), the upper housing (13) and lower case (14) two sides
Second sliding slot is offered respectively, and second sliding block (16) adapts to cooperation with second sliding slot and is slidably connected.
7. large-diameter measurement according to claim 5, detection device, which is characterized in that first rack gear (5) and second
Rack gear (6) bottom offers strut slot (8) respectively；
First rack gear (5) and the second rack gear (6) stretch out the one end of shell (1), are respectively articulated with institute in the strut slot (8)
State the first strut (31) and the second strut (32)；
The size of the strut slot (8) is identical as the size of first strut (31) and/or the second strut (32).
8. large-diameter measurement according to claim 7, detection device, which is characterized in that the inner sidewall of the strut slot (8)
There is buckle, makes the buckle to the strut (3) limit in the strut slot (8).
9. large-diameter measurement according to claim 7, detection device, which is characterized in that the strut slot (8) and strut
(3) articulated position is equipped with convex buckle, so that the convex buckle is limited in the strut (3) to the strut (3) vertical with strut slot (8)
Position.
10. large-diameter measurement according to claim 1, detection device, which is characterized in that the roller (4) includes: to roll left
Column (41) and right roller (42), the column that rolls left (41) and right roller (42) are removable at strut (3) with roller (4) articulated position
Unload connection；
Two sides of the shell (1) are removably connected with roller button (9) respectively, and the roller button (9) is far from shell (1)
Side is arc-shaped groove body (91), and two inner walls of the arc-shaped groove body (91) are equipped with circular arc protrusion, block the roller (4)
It is buckled in the arc-shaped groove body (91)；It is equipped with and surveys on the upside of the roller button (9) of shell (1) left side or right side
Ruler buckles (10).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857338A (en) * | 2021-01-12 | 2021-05-28 | 武林杰 | Civil engineering project management device |
| CN113237411A (en) * | 2021-05-20 | 2021-08-10 | 广东电网有限责任公司 | Power cable turning radius measuring tool and measuring method thereof |
-
2019
- 2019-02-13 CN CN201920194873.9U patent/CN209230473U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857338A (en) * | 2021-01-12 | 2021-05-28 | 武林杰 | Civil engineering project management device |
| CN113237411A (en) * | 2021-05-20 | 2021-08-10 | 广东电网有限责任公司 | Power cable turning radius measuring tool and measuring method thereof |
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