CN101618727B - Pneumatic unidirectional car arrester - Google Patents
Pneumatic unidirectional car arrester Download PDFInfo
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- CN101618727B CN101618727B CN2009101820609A CN200910182060A CN101618727B CN 101618727 B CN101618727 B CN 101618727B CN 2009101820609 A CN2009101820609 A CN 2009101820609A CN 200910182060 A CN200910182060 A CN 200910182060A CN 101618727 B CN101618727 B CN 101618727B
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Abstract
The invention relates to a pneumatic unidirectional car arrester which is most suitable to arrest cars for a mine entrance parking at a mine inclined drift. The pneumatic unidirectional car arrester comprises connection panels symmetrically fixed to the inside of tracks, a car arresting frame with both ends respectively hinged on the connection panels and a thrust device, wherein the car arresting frame comprises a connection shaft, an involute pulling gear fixed on the connection shaft and car arresting arms; the thrush device comprises a stand, a cylinder which is horizontally fixed on the stand and corresponds to the involute pulling gear and a cylinder reversal valve for controlling the action of a cylinder piston rod; the front end of the stand is connected with a limited post for limiting the offside of the car arresting arms. The pneumatic unidirectional car arrester enables the upper mine entrance parking of a mine inclined drift to be in a unidirectional car arresting state. Therefore, cars going upwards can successfully go through without manual operation, and cars going upwards are arrested. When confirmed in a normal state, the cars going downwards can be remotely controlled to go through; the cylinder and the cylinder piston rod are not suffered from additional flexural torque resistance; a cylinder piston can move stably; the torque efficiency is high; and the pneumatic unidirectional car arrester can effectively prevent error operation and work against job regulation.
Description
Technical field
The present invention relates to a kind of Pneumatic unidirectional car arrester, be particularly useful for mine inclined the holding up traffic of well head parking area of going up, be applicable to that also other needs holding up traffic of one way traffic.
Background technology
" safety regulations in coal mine " the 370th regulation coal mine sloping lane must reach " slope three retainings ", and the stop device that uses in the present domestic coal mining enterprise has manual resistance wheel type stop device, high-end stop device, various simple and easy stop devices etc., though these stop devices also can play to the effect of holding up traffic in various degree, have following defective:
1) manually the resistance wheel type stop device is not unidirectional holding up traffic, and driving all needs manual operation up and down, and its hinge multimachine structure is complicated, and the cost height requires also higher to operating environment.
2) high-end stop device, as infrared detection device test the speed, electromagnetic senser anti-sport car detection, electromagnetic sensing and the detection of time relay speed etc., these stop devices are owing to its cost height, reliability is low, and complex structure, maintenance difficult, the effect of holding up traffic is undesirable, more is difficult to promote the use of.
3) various simple and easy stop devices, as foot-operated stop device, mainly by manually finishing, its operation labour intensity is big and performance is unreliable.The easy maloperation of operator causes derailing accident repeatedly.
Summary of the invention
The objective of the invention is at the weak point in the prior art, provide a kind of simple in structure, cost is low, and the reliability height is easy to operate, can realize the Pneumatic unidirectional car arrester of Long-distance Control.
For achieving the above object, Pneumatic unidirectional car arrester of the present invention, hold up traffic frame and the thruster that are hinged on respectively on the connecting panel by connecting panel that is symmetrically fixed on the track inboard and two ends constitute, wherein: the frame of holding up traffic by adapter shaft, be fixed on that involute shape on the adapter shaft pushes away tooth and the arm of holding up traffic constitutes; Thruster by frame, be horizontally fixed on the frame, the cylinder change-over valve that pushes away corresponding cylinder in tooth position and the action of control cylinder piston rod with involute shape constitutes; The front end of frame is connected with and limits the offside limited post of arm of holding up traffic.
It is tangent that the thrust line of described cylinder piston rod and involute shape push away the involute basic circle of tooth; Described limited post is provided with recoil spring.
Beneficial effect: the principle that the present invention is tangent with its basic circle according to the normal at any point place on the involute, the cylinder piston boom end did not contact and pushes away the tooth flank of tooth when cylinder was not worked, and thruster is avoided impacting.During cylinder operation involute shape push away tooth to the antagonistic force of cylinder piston rod all the time along involute basic circle horizontal tangent direction all the time along the axis direction of cylinder piston rod, make cylinder and piston avoid additional bending moment and drag effect, prevent seizing of piston, guarantee the stationarity of piston motion, improved mechanical efficiency.Drive torque equals the product that air pressure applies piston thrust and involute base radius during cylinder operation, if air pressure is that the constant drive torque is constant, can guarantee that system works is stable.The arm pivot angle of holding up traffic equals the advance distance and the ratio of involute base radius after piston contact pushes away tooth, so flexible design as the case may be, parameter is simple and easy to calculation.Can make the mine inclined well head parking area of going up be in unidirectional blocking state, up train can be passed through smoothly, need not manual operation, and down train is obstructed, when confirming that mine car is normal when descending, the operation air valve is opened stop device, and mine car crosses the back and removes the air valve commutation, and cylinder automatically resets, the arm of holding up traffic returns to blocking state rapidly by self gravitation, not only alleviated labor strength, and improved operation environment safety, can effectively prevent maloperation and operate against regulations.It is simple in structure, and is easy to operate, the reliability height, and cost is low, and tool is practicality widely.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a principle schematic of the present invention.
Fig. 3 is that involute shape of the present invention pushes away tooth and optimizes stressed comparative analysis scheme drawing.
Among the figure: the 1-arm of holding up traffic, the 2-orbital position, the 3-adapter shaft, 4-involute shape pushes away tooth, 5-cylinder, 6-cylinder piston rod, 7-frame, 8-cylinder change-over valve, 9-connecting panel, 10-limited post, 11-recoil spring.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described:
Shown in Figure 1, Pneumatic unidirectional car arrester of the present invention, hold up traffic frame and the thruster that are hinged on respectively on the connecting panel 9 by connecting panel 9 that is symmetrically fixed on track 2 inboards and two ends constitute, the frame of holding up traffic comprises adapter shaft 3, the involute shape that is fixed with at adapter shaft 3 middle parts pushes away tooth 4, it is concentric with adapter shaft 3 cross-sectional plane coplanes that involute shape pushes away the involute basic circle of tooth 4, adapter shaft 3 is provided with two arms 1 of holding up traffic that push away tooth 4 actions with involute shape, two arm 1 symmetries of holding up traffic are fixed on the both sides of adapter shaft 3, and the two ends of adapter shaft 3 is articulated in respectively and is fixed on the connecting panel 9 of helping track 2 inboards.Thruster is located at involute shape and pushes away tooth 4 corresponding positions, and thruster promotes involute shape when pushing away tooth 4 thrust line is along continuous straight runs all the time.Thruster is made of the cylinder change-over valve 8 of frame 7, cylinder 5 and 6 actions of control cylinder piston rod, and it is tangent that the thrust line of cylinder piston rod 6 and involute shape push away the involute basic circle of tooth 4; The front end of frame 7 is connected with the restriction offside limited post 10 of arm 1 of holding up traffic, and limited post 10 is provided with recoil spring 11, the antagonistic force when holding up traffic to bear the arm 1 of holding up traffic.Cylinder 5 horizontal fixed are on frame 7, and cylinder 5 and piston rod 6 axis are tangent with the basic circle that pushes away tooth 4 flank of tooth involutes, when cylinder 5 is not worked, cylinder piston rod 6 ends and involute shape push away and leave the gap a that is about 5mm between the tooth 4, satisfy when taking place to slip car in this gap, have only two arm 1 bottoms of holding up traffic to contact, do not contact, impacted to avoid thruster with cylinder piston rod 6 ends and involute shape pushes away the involute flank of tooth 4 with the recoil spring 11 of frame limited post 10; Involute shape pushes away tooth 4 involutes exhibitions angle and satisfies when cylinder piston rod 6 is pushed into operating distance farthest cylinder piston rod 6 ends and still contact with the involute flank that involute shape pushes away tooth 4, makes the stressed all the time optimum of thruster during work.
When down train by the time, need reversing valve operated 8, the pneumatic stop device of opening.Detailed process is, when mine car is normally sailed down by last flatcar field, the stop device operative employee reversing valve operated 8, start working cylinder piston rod 6 of cylinder is released, the distance contact involute shape that cylinder piston rod 6 is at first crossed gap a pushes away tooth 4, and then promote to hold up traffic arm 1 commentaries on classics down, and the arm 1 of holding up traffic when cylinder piston rod 6 reaches range also goes to orbital plane below 2, and stop device is opened.After down train was passed through, shut-down operation change-over valve 8 resetted it, and the arm 1 of holding up traffic resets rapidly under each restoring force effect with cylinder piston rod 6, gets back to blocking state.
When up train is passed through, need not operation.Led by the slope track and into go up the flatcar field and touch when holding up traffic arm 1 when mine car is pulled steel rope, the arm 1 of holding up traffic is accommodated thereupon, and when car body crosses, the arm 1 of holding up traffic resets rapidly under the effect of restoring force (gravity).Thruster does not move in the whole process, and cylinder piston rod 6 does not push away tooth 4 with involute shape and contacts, and thruster is not subjected to any impact.
When taking place to slip, car holds up traffic automatically.Detailed process is: glide when car takes place to slip when mine car is unexpected, car body wheel shaft height place bumps with arm 1 upper end of holding up traffic, and the swing of arm 1 lower end of holding up traffic is stoped by frame 6 through recoil spring, and the mine car arm 1 of being held up traffic blocks.The impact energy of collision is mainly absorbed by the recoil spring of frame lower end.Because push rod end and involute shape push away between the tooth 4 and leave certain interval, push rod can not contact involute shape and push away tooth 4 in the whole collision process, thus can not be subjected to any impact, thus effectively protected pneumatic system to guarantee the high reliability of system.
Stressed principle: shown in Figure 2, because it is tangent that cylinder piston rod 6 axis and involute shape push away the basic circle of tooth 4 flank of tooth involutes, know by involute character, cylinder piston rod 6 axis are the normal of involute at the flank of tooth and cylinder piston rod 6 end face contact point places, so involute shape pushes away the antagonistic force of 4 pairs of cylinder piston rods 6 of tooth all the time along its axis direction in arm 1 opening procedure of holding up traffic, cylinder piston rod 6 does not bear additional bending moment and drag effect, and thruster is operated in best strained condition.Know easily that by involute character the arm 1 pivot angle speed of holding up traffic is relatively stable: ω=v/h, wherein v is the speed that cylinder piston rod 6 promotes, h is an involute base radius in the principle of forming involute scheme drawing for the thrust arm of force.Arm 1 pivot angle of holding up traffic equals effective advance distance and arm of force ratio: θ=s/h, wherein s is effective advance distance, and promptly cylinder piston rod 6 contacts the advance distance after involute shapes push away tooth 4, and maximum active distance is pushed away the initial stagger angle decision of tooth 4 by involute shape, be made as b, so maximum pendulum angle is θ
Max=b/h, general maximum pendulum angle is got 60 degree and can be satisfied operating needs in the reality, so cylinder piston rod 6 rises are required be: h π/3+a, can carry out Selection and Design to thruster in view of the above.Drive torque: M=Qh, wherein Q is for involute shape pushes away the thrust that tooth 4 is subjected to cylinder piston rod 6, and Q=P when disregarding friction because thrust P is the power that air pressure applies cylinder piston rod 6, is a constant as if air pressure, and then M is constant, makes stable action.
Fig. 3 is that involute shape of the present invention pushes away tooth and optimizes stressed comparative analysis scheme drawing.Wherein: Fig. 3 (a) is that to push away tooth be that plane and piston are arc surface mechanism, finds in the application that piston easily blocks cylinder, and mechanical efficiency is low.Cylinder piston rod is carried out force analysis to be got:
R
1, R
2Existence, make cylinder piston rod be subjected to the moment of flexure piston easily to block cylinder and reduced mechanical efficiency: M
Curved=R
1N,
Fig. 3 (b) is that to push away tooth be that general cambered surface and cylinder piston rod are plane mechanism, ignoring friction to push away tooth cylinder piston rod contact pressure angle be zero but have arm of force L, and piston still bears moment of flexure and drag effect, and mechanical efficiency is low: M
Curved=QL,
Still cause piston easily to block cylinder, mechanical efficiency is low.Is plane mechanism and adopt involute shape among the figure of the present invention (c) to push away tooth 4 for involute profile and cylinder piston rod, satisfies application force that involute shape pushes away 4 pairs of thrusters of tooth all the time along its axis direction, that is: R
1=R
2=0, M
Curved=0, P=Q, the stressed the best of piston, piston does not block cylinder, and mechanical efficiency is 100% when disregarding the higher pair friction.
Claims (3)
1. Pneumatic unidirectional car arrester, it is characterized in that: it constitutes by being symmetrically fixed on hold up traffic frame and the thruster that inboard connecting panel (9) of track (2) and two ends are hinged on respectively on the connecting panel (9), and wherein: the frame of holding up traffic pushes away tooth (4) and the arm of holding up traffic (1) formation by adapter shaft (3), the involute shape that is fixed on the adapter shaft (3); Thruster by frame (7), be horizontally fixed on frame (7) and go up, push away cylinder change-over valve (8) formation of corresponding cylinder in tooth (4) position (5) and control cylinder piston rod (6) action with involute shape; The front end of frame (7) is connected with and limits the offside limited post (10) of arm (1) of holding up traffic.
2. Pneumatic unidirectional car arrester according to claim 1 is characterized in that: it is tangent that the thrust line of described cylinder piston rod (6) and involute shape push away the involute basic circle of tooth (4).
3. Pneumatic unidirectional car arrester according to claim 1 is characterized in that: described limited post (10) is provided with recoil spring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101820609A CN101618727B (en) | 2009-07-20 | 2009-07-20 | Pneumatic unidirectional car arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101820609A CN101618727B (en) | 2009-07-20 | 2009-07-20 | Pneumatic unidirectional car arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101618727A CN101618727A (en) | 2010-01-06 |
| CN101618727B true CN101618727B (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101820609A Expired - Fee Related CN101618727B (en) | 2009-07-20 | 2009-07-20 | Pneumatic unidirectional car arrester |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104590313A (en) * | 2015-02-02 | 2015-05-06 | 淮南矿业(集团)有限责任公司 | Car arrester |
| CN104890698B (en) * | 2015-05-15 | 2017-10-03 | 陕西航泰电气股份有限公司 | A kind of reversely urgent open type car arrester |
| CN109668014B (en) * | 2019-02-01 | 2023-07-04 | 桂林智神信息技术股份有限公司 | Four-axis stabilizer with vertical vibration reduction function |
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2009
- 2009-07-20 CN CN2009101820609A patent/CN101618727B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101618727A (en) | 2010-01-06 |
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Granted publication date: 20110309 Termination date: 20130720 |