CN206154978U - Wheel style math graphing auxiliary device - Google Patents

Abstract

The utility model discloses a wheel style math graphing auxiliary device relates to appurtenance technical field for the math graphing. It includes inverse -u -shaped support, inverse -u -shaped support's left side is erected the roof beam lower extreme and is installed the A axle sleeve perpendicularly, an axle sleeve inner shaft is connected with the A axle, the left side of erecting the roof beam in the left side, a axle sleeve knot is fixed with the runner chalk, the right side of erecting the roof beam in the left side, a axle and flexible axle linkage, inverse -u -shaped support's right side is erected the roof beam lower extreme and is installed the B axle sleeve perpendicularly, B axle sleeve inner shaft is connected with the B axle, erect the left side of roof beam on the right side, the epaxial noose of B is fixed with drive rotor, in drive rotor's left side, the B axle links with the other end of flexible axle, drive rotor's diameter is greater than the diameter of runner chalk, the mid -mounting that the roof beam was erected on the right side has the spring telescoping device. The utility model discloses in writing process, more stable with the friction surface of black flour, the difficult rupture phenomenon that appears of writing process in the aspect of the use, is write chronicly, more durable.

Description

Rotary-type mathematic(al) construction servicing unit

Technical field

The utility model is related to mathematic(al) construction aid technical field.

Background technology

At present, during normal use, often there is the phenomenon for fractureing to traditional chalk in Jing, especially carries out mathematics work During figure.Because during line mapping, chalk keeps a rubbing surface, once change line direction, the contact with blackboard Face will diminish suddenly, now be very easy to fracture；In addition, being frequently necessary to use ruler during mathematic(al) construction as base Standard, chalk is very easy to be cut off by ruler when ruling along ruler.

Utility model content

Technical problem to be solved in the utility model, is for above-mentioned technical deficiency, there is provided a kind of rotary-type Mathematic(al) construction servicing unit, more stable with the rubbing surface of black flour in its writing process, writing process is less prone to and fractures now As use, writing time is long, more durable.

The technical solution adopted in the utility model is：A kind of rotary-type mathematic(al) construction servicing unit, including inverted U-shaped are provided Frame；The left side vertical beam lower end of inverse-U-shape rack is vertically installed with A axle sleeves；Rotating shaft in A axle sleeves is connected with A axles；A left side for vertical beam in left side Side, A axle sleeves knot is fixed with runner chalk；The right side of vertical beam in left side, A axles and a flexible shaft linkage；The right side vertical beam of inverse-U-shape rack Lower end is vertically installed with B axle set；Rotating shaft in B axle set is connected with B axle；The left side of vertical beam on right side, noose is fixed with driving in B axle Runner；In the left side for driving runner, B axle links with the other end of flexible axle；It is described drive runner with diameter greater than runner chalk Diameter；Telescopic spring device is installed in the middle part of the vertical beam of right side.

Further optimize the technical program, the wheel face of the driving runner of rotary-type mathematic(al) construction servicing unit is provided with rubber Skid resistant course.

Further optimize the technical program, the outer cover of the inverse-U-shape rack of rotary-type mathematic(al) construction servicing unit has hand Handle.

The beneficial effects of the utility model are：1st, the technical program realizes runner chalk and drives both runners using flexible axle Between transmission, drive runner with diameter greater than runner chalk, such runner chalk rotating ratio drives runner little, can be in blackboard There is sliding friction simultaneously with blackboard during upper rolling, realize the setting-out on blackboard.Slide is carried out simultaneously with rolling, and is turned Keep stable with the contact surface size of blackboard during wheel chalk use, stabilized structure, will not break, fracture, thickness it is uneven.Rubber Glue skid resistant course can increase the frictional force for driving runner and blackboard, it is ensured that the sliding friction of runner chalk.

Description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 removes the structural representation of remainder after handle for the utility model；

Fig. 3 is runner chalk detached schematic diagram from A axles.

In figure, 1, inverse-U-shape rack；2nd, left side vertical beam；3rd, A axle sleeves；4th, A axles；5th, runner chalk；6th, flexible axle；7th, right side is erected Beam；8th, B axle set；9th, B axle；10th, runner is driven；11st, telescopic spring device；12nd, handle；13rd, rubber antiskid layer；14th, guide post； 15th, reseting pressuring spring；16th, it is raised.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

As Figure 1-3, rotary-type mathematic(al) construction servicing unit, including inverse-U-shape rack 1；Erect in the left side of inverse-U-shape rack 1 The lower end of beam 2 is vertically installed with A axle sleeves 3；Rotating shaft in A axle sleeves 3 is connected with A axles 4；The left side of vertical beam 2 in left side, the knot of A axle sleeves 3 is fixed There is runner chalk 5；The right side of vertical beam 2 in left side, A axles 4 link with a flexible axle 6；The lower end of right side vertical beam 7 of inverse-U-shape rack 1 is vertical B axle set 8 is installed；Rotating shaft in B axle set 8 is connected with B axle 9；The left side of vertical beam 7 on right side, noose is fixed with driving and turns in B axle 9 Wheel 10；In the left side for driving runner 10, B axle 9 links with the other end of flexible axle 6；It is described drive runner 10 with diameter greater than runner The diameter of chalk 5；The middle part of right side vertical beam 7 is provided with telescopic spring device 11；It is described to drive the wheel face of runner 10 to be provided with rubber Glue skid resistant course 13；The outer cover of inverse-U-shape rack 1 has handle 12.

The central principle of this enforcement is rubbed by driving runner 10 to make runner chalk 5 that slip to occur while rolling friction Wipe, only sliding friction just can guarantee that stable line.The rolling friction of runner chalk 5 ensure that its uniform loss, waste Few, line is stable, will not fracture.It is driven by flexible axle 6 between runner chalk 5 and driving runner 10, flexible axle 6 allows runner chalk Relative axis skew between 5 and driving runner 10.During the loss of runner chalk 5, the B axle for driving runner 10 is also required to Upper shifting could keep stability during line, not wander off.

Telescopic spring device 11 includes two telescopic spring units, and each telescopic unit is being led including guide post 14, noose To the reseting pressuring spring 15 outside bar 14；The upper end of guide post 14 is fixedly connected with the top of right side vertical beam 7, the lower end of guide post 14 It is slidably connected with right side vertical beam 7 and the block by raised 16 limits sliding stroke.

Claims (3)

1. a kind of rotary-type mathematic(al) construction servicing unit, it is characterised in that：Including inverse-U-shape rack（1）；Inverse-U-shape rack（1）A left side Side vertical beam（2）Lower end is vertically installed with A axle sleeves（3）；A axle sleeves（3）Interior rotating shaft is connected with A axles（4）；In left side vertical beam（2）A left side Side, A axle sleeves（3）Knot is fixed with runner chalk（5）；In left side vertical beam（2）Right side, A axles（4）With a flexible axle（6）Linkage；U Shape support（1）Right side vertical beam（7）Lower end is vertically installed with B axle set（8）；B axle set（8）Interior rotating shaft is connected with B axle（9）；On the right side Side vertical beam（7）Left side, B axle（9）Upper noose is fixed with driving runner（10）；Driving runner（10）Left side, B axle（9）With Flexible axle（6）The other end linkage；The driving runner（10）With diameter greater than runner chalk（5）Diameter；Right side vertical beam（7）'s Middle part is provided with telescopic spring device（11）.

2. rotary-type mathematic(al) construction servicing unit according to claim 1, it is characterised in that：The driving runner（10）'s Wheel face is provided with rubber antiskid layer（13）.

3. rotary-type mathematic(al) construction servicing unit according to claim 1, it is characterised in that：Described inverse-U-shape rack（1） Outer cover have handle（12）.