CN203643313U - Pendulum type frictiograph with ratchet mechanism - Google Patents
Pendulum type frictiograph with ratchet mechanism Download PDFInfo
- Publication number
- CN203643313U CN203643313U CN201320825962.1U CN201320825962U CN203643313U CN 203643313 U CN203643313 U CN 203643313U CN 201320825962 U CN201320825962 U CN 201320825962U CN 203643313 U CN203643313 U CN 203643313U
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- China
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- pointer
- ratchet
- crossbeam
- pendulum type
- guide groove
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model belongs to a pendulum type frictiograph, and in particular discloses a pendulum type frictiograph with a ratchet mechanism. The pendulum type frictiograph comprises a base (1), a vertical post (2) standing on the base (1), a lifting platform sleeving the vertical post (2), a dial (3) and a cross beam (6) fixed on the lifting platform, a horizontal shaft (19) vertically extending out of the surfaces of the dial (3) and the cross beam (6) from the top of the lifting platform, an indicator lantern ring (13) and a swinging arm (4) sequentially sleeving the horizontal shaft (19), and a sliding block (5) connected to the tail end of the swinging arm (4), wherein the an indicator rod (8) and an indicator tail end (9) respectively extend out of outer circumference of the indicator lantern ring (13); the pendulum type frictiograph is characterized in that a ratchet (14) is fixedly connected to one surface, close to the cross beam (6), of the indicator lantern ring (13); a pawl mechanism (12) meshed with the ratchet (14) is arranged on the cross beam (6).
Description
Technical field
The utility model relates to a kind of pendulum type friction instrument, is specifically related to a kind of pendulum type friction instrument with ratchet device.
Background technology
Along with the development of communications and transportation cause, the anti-skidding problem on the road surfaces such as highways and streets and airfield runway, has caused the generally attention of roading department.Pendulum-type measuring instrument is a kind of instrument of measuring the coefficients of friction such as road surface, airfield runway, marking paint.Also can be used for the mensuration of typical road surface coefficient of friction, as determine tire formulation according to one of.Portable pendulum tester is kinetic swing impingement instrument.It is to develop according to " when the elevation loss of pendulum equals to be installed on sheet rubber that swing arm end slips on piece and slips over road surface, institute overcomes road surface friction work " this ultimate principle.
In practical operation, while turning to left end highest point due to pendulum, must catch in the moment of falling, impact on road surface with anti-sway, in this process, because the impulsive force of pendulum is larger, the moment of catching pendulum can allow whole device produce vibrations, make pointer have certain rocking, thereby cause reading to have certain error.
Utility model content
For above problem, the purpose of this utility model is to provide a kind of pendulum type friction instrument with ratchet device, and it can effectively avoid pointer to be subject to the impact of the vibrations in measuring process.
For reaching above object, the utility model is achieved by the following technical solutions.
A kind of pendulum type friction instrument with ratchet device, comprise base, be vertically fixed on the column on base, be sleeved on the lifting table on column, be fixed on index dial and crossbeam on described lifting table, vertically stretch out the transverse axis of index dial and beam surface from lifting table top, be sleeved on successively pointer, swing arm on described transverse axis, be connected to the piece that slips of swing arm end; Described pointer outer circumference surface is extended with respectively pointer bar and pointer tail end; It is characterized in that, the described pointer collar is fixedly connected with ratchet near the one side of crossbeam; On described crossbeam, be provided with the detent mechanism engaging with ratchet.
The feature of technique scheme and further improvement:
Described detent mechanism comprises the panel beating guide groove being fixed on crossbeam, is arranged on the top pawl in described panel beating guide groove, is resisted against the volute spring of described top radix unguis portion and panel beating guide groove cecum; Described panel beating guide groove openend is provided with baffle plate, and described top radix unguis portion is extended with the reset shifting block of barrier on baffle plate, and top hook tip engages with ratchet.
The beneficial effects of the utility model are, by the ratchet that is fixedly connected with the pointer collar be arranged on the ratchet pawl on crossbeam, a ratchet device that can make stable pointer reading is provided, has made pointer in the situation that instrument shakes, to keep pointer position constant, reduced measuring error.
Brief description of the drawings
Below by the drawings and specific embodiments, the utility model is further detailed:
Fig. 1 is the overall schematic of a kind of pendulum type friction instrument with ratchet device of the present utility model;
Fig. 2 is the partial schematic diagram in Fig. 1;
Fig. 3 refers to the side schematic view of needle guard ring and ratchet;
Fig. 4 is the partial schematic diagram in Fig. 2.
In above figure: 1, base; 2, column; 3, index dial; 4, swing arm; 5, slip piece; 6, crossbeam; 7, trimmer; 8, pointer bar; 9, pointer tail end; 10, volute spring; 11, adjusting bolt; 12, detent mechanism; 13, the pointer collar; 14, ratchet; 15, top pawl; 16, reset shifting block; 17, panel beating guide groove; 18, baffle plate; 19, transverse axis.
Embodiment
With reference to figure 1 and Fig. 2, pendulum type friction instrument with ratchet device of the present utility model, it has a base (1), on base (1), be fixed with a vertical column (2), on column (2), be set with lifting table, on lifting table, be fixed with index dial (3) and crossbeam (6), vertically stretch out the transverse axis (19) on index dial (3) and crossbeam (6) surface from lifting table top, on described transverse axis (19), be set with successively the pointer collar (13), swing arm (4), be connected with and slip piece (5) at swing arm (4) end.Wherein, the pointer collar (13) outer circumference surface is extended with respectively pointer bar (8) and pointer tail end (9).Also be provided with trimmer (7) at swing arm (4) root near the position of transverse axis (19), the upper spiral of trimmer (7) is connected with an adjusting bolt (11).When swing arm (4) swings, adjusting bolt (11) the push pointer tail end (9) on trimmer (7) drives the pointer collar (13) to rotate, and makes pointer bar (8) point to corresponding scale on index dial.
Referring again to Fig. 3, the pointer collar (13) is fixedly connected with ratchet (14) near the one side of crossbeam (6).On crossbeam (6), be provided with the detent mechanism (12) engaging with ratchet (14).
With reference to figure 4, detent mechanism (12) by panel beating guide groove (17), top pawl (15), volute spring (10), form.Wherein, it is upper that panel beating guide groove (17) is fixed on crossbeam (6), and top pawl (15) is assemblied in panel beating guide groove (17), and volute spring (10) is resisted against between top pawl (15) root and panel beating guide groove (17) cecum.The openend of panel beating guide groove (17) is provided with baffle plate (18), and the root of top pawl (15) is extended with the reset shifting block (16) of barrier on baffle plate (18), and engage with ratchet (14) top pawl (15) tip.
When swing arm (4) is after crossbeam (6) discharges, swing arm (4) swings clockwise around transverse axis (19), adjusting bolt (11) on the upper fixing trimmer (7) of swing arm (4) rotates the pointer collar (13) push pointer tail end (9), the upper fixing ratchet (14) of the pointer collar (13) also rotates thereupon, in the time that swing arm (4) rises to highest point and starts to fall, adjusting bolt (11) separates with pointer tail end (9), pointer tail end (9) is upper in equilibrium state at the pointer collar (13) with pointer bar (8), be still on transverse axis (19), the scale of indication when pointer bar (13) keeps adjusting bolt (11) separation finger backshank end (9).Due to swing arm (4) whereabouts backswing, needing gauger to catch swing arm (4), to prevent from slipping piece (5) impaired, but easily make instrument rock in catching swing arm (4), destroy the balance of pointer bar (8) and pointer tail end (9), the pointer collar (13) can rotate, and pointer bar (8) also can lose the position of original indication.
But because the upper fixing ratchet (14) of the pointer collar (13) engages with the top pawl (15) on side, stop the rotation of the pointer collar (13), also prevent the swing of pointer bar (8), ensured the accuracy of the described scale of pointer bar (8), reduced artificial measuring error.Although in swing arm (4) swing process, ratchet device also can produce the moment of resistance, swing arm (4) full swing height is reduced, pointer refers to that the indicating positions of bar (8) can lead to the adjusting bolt (11) of adjusting on trimmer (7) and compensate.While again measurement, the reset shifting block (16) that can stir on top pawl (15) resets pointer bar (8) clawback.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also comprises these changes and modification interior.
Claims (2)
1. the pendulum type friction instrument with ratchet device, comprise base (1), be vertically fixed on the column (2) on base (1), be sleeved on the lifting table on column (2), be fixed on index dial (3) and crossbeam (6) on described lifting table, the transverse axis (19) that vertically stretches out index dial (3) and crossbeam (6) surface from lifting table top, is sleeved on the pointer collar (13), swing arm (4) on described transverse axis (19) successively, and what be connected to swing arm (4) end slips piece (5); The described pointer collar (13) outer circumference surface is extended with pointer bar (8) and pointer tail end (9); It is characterized in that, the described pointer collar (13) is fixedly connected with ratchet (14) near the one side of crossbeam (6); On described crossbeam (6), be provided with the detent mechanism (12) engaging with ratchet (14).
2. a kind of pendulum type friction instrument with ratchet device as claimed in claim 1, it is characterized in that, described detent mechanism (12) comprises the panel beating guide groove (17) being fixed on crossbeam (6), be arranged on the top pawl (15) in described panel beating guide groove (17), be resisted against the volute spring (10) of described top pawl (15) root and panel beating guide groove (17) cecum; Described panel beating guide groove (17) openend is provided with baffle plate (18), and described top pawl (15) root is extended with the reset shifting block (16) of barrier on baffle plate (18), and engage with ratchet (14) top pawl (15) tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825962.1U CN203643313U (en) | 2013-12-13 | 2013-12-13 | Pendulum type frictiograph with ratchet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320825962.1U CN203643313U (en) | 2013-12-13 | 2013-12-13 | Pendulum type frictiograph with ratchet mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203643313U true CN203643313U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320825962.1U Expired - Fee Related CN203643313U (en) | 2013-12-13 | 2013-12-13 | Pendulum type frictiograph with ratchet mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203643313U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062228A (en) * | 2014-06-10 | 2014-09-24 | 宿迁市科路养护技术有限公司 | Friction coefficient tester with high-precision leveling function |
| CN105547874A (en) * | 2015-12-19 | 2016-05-04 | 长安大学 | Concrete impact resistance detection apparatus and method |
| CN107941691A (en) * | 2017-11-14 | 2018-04-20 | 东华理工大学 | A kind of discrete material skin-friction coefficient analyzer |
| CN108169119A (en) * | 2017-12-26 | 2018-06-15 | 崔文良 | A kind of stabilising arrangement of pendulum friction coefficient determinator |
-
2013
- 2013-12-13 CN CN201320825962.1U patent/CN203643313U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062228A (en) * | 2014-06-10 | 2014-09-24 | 宿迁市科路养护技术有限公司 | Friction coefficient tester with high-precision leveling function |
| CN105547874A (en) * | 2015-12-19 | 2016-05-04 | 长安大学 | Concrete impact resistance detection apparatus and method |
| CN107941691A (en) * | 2017-11-14 | 2018-04-20 | 东华理工大学 | A kind of discrete material skin-friction coefficient analyzer |
| CN107941691B (en) * | 2017-11-14 | 2020-02-18 | 东华理工大学 | Surface friction coefficient tester for bulk material |
| CN108169119A (en) * | 2017-12-26 | 2018-06-15 | 崔文良 | A kind of stabilising arrangement of pendulum friction coefficient determinator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |