CN204871054U - Couple braking formula mine car - Google Patents
Couple braking formula mine car Download PDFInfo
- Publication number
- CN204871054U CN204871054U CN201520646784.5U CN201520646784U CN204871054U CN 204871054 U CN204871054 U CN 204871054U CN 201520646784 U CN201520646784 U CN 201520646784U CN 204871054 U CN204871054 U CN 204871054U
- Authority
- CN
- China
- Prior art keywords
- mine car
- brake
- frame
- group
- knee
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Braking Arrangements (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
The utility model discloses a couple braking formula mine car wherein brakies the catcher and includes the pull rod that saves the mine car around with and link to each other, and the other end of pull rod passes the uide bushing of fixing in the frame, and the uide bushing is inboard connects a pressure spring, and even on the pull rod, the tip of pull rod contacts through deflector of round pin hub connection, the other end and the deflector of pressure spring the pressure spring cover, the middle part of pull rod and knee group wherein on one side middle part are articulated through round pin axle I, brake bar group includes the dive flap of two symmetries, and the one end of two dive flaps links together through the brake axle, overlaps on the brake axle to have to center on its rotatory braking sleeve, and the tooth's socket of brakeing on the rack -track is arrested to the braking sleeve, and the brake bar other end passes through to sell axle and hinged rack, the one end and the brake bar group of knee group upward articulate through selling axle II the middle part position. The utility model discloses simple structure, mechanical brake rapidly during the sports car accident, the use that does in the drift, the installation, dismantle, maintain convenient.
Description
Technical field
The utility model relates to a kind of brake type mine car, is specifically related to a kind of hook brake type mine car.
Background technology
Slope vehicle rail transport is a kind of transportation mode that the mines such as colliery extensively adopt, its types of transportation is transported by the winch traction mine car group be arranged on above inclined shaft, often there is the phenomenons such as disconnected rope, chain rupture or disconnected pin and cause the problem of mine car or mine car group row sport car in mine car, causes safety in production casualty accident often to occur when running.
Catcher conventional at present has following several form, and a kind of is the running velocity being detected mine car in mine by sensor, once the utilization of discovery stall condition is kept off a car, net or arrester stop mine car.This mode weak point is: blocking apparatus weight is comparatively large, and in-site installation carrying and inconvenient maintenance are difficult to universal use; Blocking apparatus can only single use, and both wasted material, and destroyed again the continuity of shaft production, accident settlement is time-consuming requires great effort again.
Another kind installs electron detection device on mine car, adopts retaining pawl or embrace rail mechanism to brake mine car.The defect of this mode is: equipment debugging, maintenance program complexity etc. are numerous and diverse, the electronic product antidusting used in equipment, corrosion resistance are poor, after long-time use, electronic product performance is unstable, sometimes also can malfunctioning at crucial moment, lost efficacy or misoperation; What is more, and an inclined shaft wants multistage to tackle just can reach comparatively ideal effect, and this not only increases mine cost, but also the interception result of out of reach 100%.
Summary of the invention
For solving the problem; the utility model provides a kind of hook brake type mine car, and this mine car to have in inclined gallery the downward any point of grade change point due to disconnected rope, unhook etc. and cause the device providing safety guard-safeguard during derailing accident, structure is simple simultaneously; cost is low, and installation and maintenance are extremely convenient.
To achieve these goals, a kind of hook brake type mine car, comprise braking catcher, described device is arranged in the frame of mine car rear and front end symmetrically, lays a braking rack-track in the middle of inclined gallery; Catcher comprises the pull bar be connected with prosthomere mine car or deutomerite mine car, pull bar also can slide through the mounting hole in frame in frame, the other end of pull bar is through the orienting sleeve be fixed in frame, a stage clip is connected inside orienting sleeve, compression spring sleeve is connected on pull bar, the end of pull bar connects a guide plate by nut, and the other end of stage clip contacts with guide plate;
Catcher also has a knee group and a lever connection group, and 90 ° of bent plates that knee group is connected by two symmetries form, and it is hinged that bearing pin I is passed through at the middle part of pull bar and knee group middle part wherein; Lever connection group comprises two symmetrical slippers, one end of two slippers is linked together by brake axle, on brake axle, cover has the brake sleeve that can rotate around it, teeth groove on brake sleeve catch brake rack-track, the other end of lever connection group is hinged on the axle bed that is connected with frame; In one end of knee group and lever connection group, medium position is hinged by bearing pin II.
The situation of rope or unhook once generation winch haulage cable breaks, connecting bridge before or after mine car just loses tractive force, due to the elastic restoring force of stage clip in orienting sleeve, stage clip promotes guide plate and pull bar moves towards the direction contrary with mine car working direction, pull bar slides in the mounting hole of frame, pull bar drives knee group to rotate by bearing pin I, the bearing pin that rotates through of knee group drives lever connection group to rotate around the hinge-point of axle bed, when knee group turn to brake axle together with the brake sleeve on it enter into braking rack guide rail teeth groove time, brake sleeve and teeth groove engage each other and are stuck in wherein, mine car sport car can be stoped rapidly.
Further, this device also has a switching mechanism, described switching mechanism comprises eccentric wheel, wheel shaft and driving lever, eccentric wheel is connected between frame by wheel shaft, eccentric wheel is connected by key with wheel shaft, wheel shaft is connected by key with driving lever, and driving lever band movable eccentric wheel and wheel shaft rotate around the hole in frame and extrude knee group.
When mine car is in level course transportation, do not wish brake system work, by switching mechanism, brake equipment can be closed, driving lever is rotated by wheel shaft band movable eccentric wheel, eccentric wheel, by extruding knee group, drives lever connection group to rotate while knee group is rotated, and lever connection group drives brake axle and brake sleeve to pull out from the teeth groove of braking rack guide rail, owing to being roll friction between brake sleeve and brake axle, so hinder moment very little in the process of lever connection group rotation.After brake equipment is closed, mine car freely can travel under the effect of tractive force
Further, one end of driving lever has fixed orifice, frame has two knock holees, and locating dowel pin is fixed on the knock hole of frame through the fixed orifice on driving lever; Locating dowel pin connects with driving lever is dynamic, and the bearing pin of locating dowel pin has two circular grooves, the side of driving lever has tapped bore, and one end of screw connects a steel ball by spring, and screw is arranged in tapped bore, and steel ball and one of them circular groove cooperatively interact; When driving lever is connected with one of them knock hole, eccentric wheel and knee group have gap, and when driving lever is connected with another knock hole, eccentric wheel contacts with the guide wheel in knee group.
Pulled out outside knock hole frame by locating dowel pin, due to the elastic force of spring, steel ball and another on locating dowel pin enclose annular opening and engage and fixed by locating dowel pin, and now driving lever is unfettered; Then rotating lever 180 °, and being inserted by locating dowel pin on another knock hole, steel ball and another on locating dowel pin enclose annular opening and engage and can prevent locating dowel pin from losing.
Further, through adapter shaft in the topped hole of two bent plates of knee group, on adapter shaft, between two of knee group bent plates, cover connects a guide wheel that can rotate around it, and when switching mechanism cuts out, eccentric wheel contacts with guide wheel.Eccentric wheel and guide wheel Structure deformation, resisting moment is little, makes operating process more smooth and easy, improves equipment component service life.
Further, uniform some annular knurls on the outer circumference surface of brake sleeve.Improve the friction force between brake drum and braking rack guide rail, make deceleration and stopping performance more reliable.
Further, the top of described lever connection group has the limiting stopper being fixed on frame.Limiting stopper is for limiting the end position of lever connection group.
Further, the pull bar inside frame is fixed with block.Block is for limiting the end position of pull bar in car haul process and tractive force being applied directly to frame by block.
The utility model structure is simple, and in inclined gallery, the downward any point of grade change point is due to can mechanical braking when disconnected rope, unhook etc. cause derailing accident, and also close brake equipment by switching mechanism when gallery uses, Applicable scope is wider; Install simultaneously, dismantle, easy to maintenance.
Accompanying drawing explanation
Working diagram when Fig. 1 is catcher braking on mine car;
Fig. 2 is working diagram when catcher is not braked on mine car;
Fig. 3 is catcher enlarged diagram in Fig. 1;
Fig. 4 is catcher enlarged diagram in Fig. 2;
Fig. 5 is A-A part sectional view in Fig. 4;
Fig. 6 is B-B part sectional view in Fig. 4;
Fig. 7 is C-C part sectional view in Fig. 4;
Fig. 8 is D-D local revolved sectional view in Fig. 3;
In figure: 1, pull bar; 2, frame; 3, block; 4, rack-track is braked; 5, knee group; 6, guide plate; 7, orienting sleeve; 8, stage clip; 9, lever connection group; 10, limiting stopper; 11, axle bed; 12, bearing pin I; 13, bearing pin II; 14, driving lever; 15, locating dowel pin; 16, adapter shaft; 17, guide wheel; 18, eccentric wheel; 19, wheel shaft; 20, brake axle; 21, brake sleeve; 22, steel ball; 23, spring; 24, screw.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figures 1 to 4, arrow is depicted as mine car working direction, a kind of hook brake type mine car, and comprise braking catcher, described device is arranged in the frame 2 of mine car rear and front end symmetrically, lays a braking rack-track 4 in the middle of inclined gallery; Catcher comprises the pull bar 1 be connected with prosthomere mine car or deutomerite mine car, pull bar 1 also can slide through the mounting hole in frame 2 in frame 2, the other end of pull bar 1 is through the orienting sleeve 7 be fixed in frame, a stage clip 8 is connected inside orienting sleeve 7, stage clip 8 cover is connected on pull bar 1, the end of pull bar 1 connects a guide plate 6 by nut, and the other end of stage clip 8 contacts with guide plate 6;
As shown in Fig. 3, Fig. 4 and Fig. 7, catcher also has a knee group 5 and a lever connection group 9, and 90 ° of bent plates that knee group 5 is connected by two symmetries form, and it is hinged that bearing pin I12 is passed through at the middle part of pull bar 1 and knee group 5 middle part wherein; Lever connection group 9 comprises two symmetrical slippers, one end of two slippers is linked together by brake axle 20, on brake axle 20, cover has the brake sleeve 21 that can rotate around it, teeth groove on brake sleeve 21 catch brake rack-track 4, the other end of lever connection group 9 is hinged on the axle bed 11 that is connected with frame; In one end of knee group 5 and lever connection group 9, medium position is hinged by bearing pin II13.
As shown in figures 1 and 3, the situation of rope or unhook once generation winch haulage cable breaks, connecting bridge before or after mine car just loses tractive force, due to the elastic restoring force of stage clip in orienting sleeve, stage clip promotes guide plate and pull bar 1 moves towards the direction contrary with mine car working direction, pull bar 1 slides in the mounting hole of frame 2, pull bar 1 drives knee group 5 to rotate by bearing pin I12, the bearing pin II13 that rotates through of knee group 5 drives lever connection group 9 to rotate around the hinge-point of axle bed 11, when knee group 9 turn to brake axle 20 together with the brake sleeve 21 on it enter into braking rack guide rail 4 teeth groove time, brake sleeve 21 and teeth groove engage each other and are stuck in wherein, mine car sport car can be stoped rapidly.
As shown in Figure 3 and Figure 4, this device also has a switching mechanism, described switching mechanism comprises eccentric wheel 18, wheel shaft 19 and driving lever 14, eccentric wheel 18 is connected between frame 2 by wheel shaft 19, eccentric wheel 18 is connected by key with wheel shaft 19, wheel shaft 19 is connected by key with driving lever 14, and driving lever 14 to rotate around the hole in frame 2 with movable eccentric wheel 18 and wheel shaft 19 and extrudes knee group 5.
As shown in Figure 2 and Figure 4, when mine car is in level course transportation, do not wish brake system work, by switching mechanism, brake equipment can be closed, driving lever is rotated by wheel shaft band movable eccentric wheel, eccentric wheel is by extruding knee group, lever connection group is driven to rotate while knee group is rotated, lever connection group drives brake axle 20 and brake sleeve 21 to pull out from the teeth groove of braking rack guide rail 4, owing to being roll friction between brake sleeve 21 and brake axle 20, so hinder moment very little in the process of lever connection group 9 rotation.After brake equipment is closed, mine car freely can travel under the effect of tractive force
As shown in Fig. 3, Fig. 4, Fig. 6 and Fig. 8, one end of driving lever 14 has fixed orifice, frame 2 has two knock holees, and locating dowel pin 15 is fixed on the knock hole of frame 2 through the fixed orifice on driving lever 14; Locating dowel pin 15 connects with driving lever 14 is dynamic, the bearing pin of locating dowel pin 15 has two circular grooves, the side of driving lever 14 has tapped bore, and one end of screw 24 connects a steel ball 22 by spring 23, screw 24 is arranged in tapped bore, and steel ball 22 and one of them circular groove cooperatively interact; When driving lever 14 is connected with one of them knock hole, eccentric wheel 18 and knee group 5 have gap, and when driving lever is connected with another knock hole, eccentric wheel 18 contacts with knee group 5.
Pulled out outside knock hole frame 2 by locating dowel pin 15, due to the elastic force of spring 23, steel ball 22 and another on locating dowel pin 15 enclose annular opening and engage and fixed by locating dowel pin, and now driving lever 14 is unfettered; Then rotating lever 180 °, and being inserted by locating dowel pin on another knock hole, steel ball and another on locating dowel pin enclose annular opening and engage and can prevent locating dowel pin from losing.
As shown in Fig. 3, Fig. 4 and Fig. 6, through adapter shaft 16 in the topped hole of two bent plates of knee group 5, on adapter shaft 16, between two of knee group bent plates, cover connects a guide wheel 17 that can rotate around it, and when switching mechanism cuts out, eccentric wheel 18 contacts with guide wheel 17.Eccentric wheel and guide wheel Structure deformation, resisting moment is little, makes operating process more smooth and easy, improves equipment component service life.
Further, uniform some annular knurls on the outer circumference surface of brake sleeve 21.Improve the friction force between brake drum 21 and braking rack guide rail, make deceleration and stopping performance more reliable.
As shown in Figure 3 and Figure 4, the top of described lever connection group 9 has the limiting stopper 10 being fixed on frame 2.Limiting stopper 10 is for limiting the end position of lever connection group 9.
Further, the pull bar 1 inside frame 2 is fixed with block 3.Block 3 is for limiting the end position of pull bar in car haul process and tractive force being applied directly to frame by block.
Working process is as follows:
Brake the schematic diagram that catcher cuts out when Fig. 2 is mine car normal forward, Fig. 1 brakes schematic diagram when catcher works when to be this mine car disconnect with anterior mine car;
As shown in Figure 4, the switching mechanism in figure is in Fig. 3 position.When mine car normal forward, anterior mine car is connected by pull bar 1 with mine car in figure, tractive force pulls pull bar 1 to move forward in the mounting hole of frame 2, drive guide plate 6 compression press spring 8 to car forward direction motion simultaneously, the bearing pin I12 that moves through of pull bar 1 drives knee group 5 to rotate clockwise, the bearing pin II13 that rotates through of knee group 5 drives the hinge-point of lever connection group 9 on axle bed 11 to rotate counterclockwise, brake axle 20 in lever connection group and brake sleeve 21 are pulled out from the teeth groove of braking rack guide rail 4, owing to being roll friction between brake sleeve 21 and brake axle 20, so hinder moment very little in the process of lever connection group 9 rotation.Act on tractive force on pull bar 1 to be applied in frame 2 by the block on pull bar 1 thus to drive mine car to move ahead, other rod members that pull bar 1 connects are not by tractive force.
As shown in Figure 3, after the disconnected rope of haulage cable of traction mine car winch, under the elastic restoring force of stage clip 8, pull bar 1 moves towards the direction that mine car working direction is contrary together with guide plate 6, pull bar 1 drives knee group 5 to rotate counterclockwise by bearing pin I12, knee group 5 drives the hinge-point of lever connection group 9 on axle bed 11 to rotate clockwise by bearing pin II13, when knee group 9 turns to brake axle 20 and brake sleeve 21 enters into the teeth groove of braking rack guide rail 4, brake sleeve 21 is stuck in the teeth groove of braking rack guide rail, stop mine car descending, realize the rapid braking of disconnected rope mine car.
When mine car moves ahead in gallery, can opening switch mechanism, make the whole brake equipment on mine car inoperative, as shown in Figure 6 and Figure 8, extract locating dowel pin 15, steel ball 22 is stuck on the circular groove of locating dowel pin under the effect of spring 23, locating dowel pin departs from the knock hole in frame 2 simultaneously, rotating lever 14, driving lever 14 is with movable eccentric wheel 18 to rotate by wheel shaft 19, when driving lever turns to the position of another knock hole in frame, downward pressure is applied to locating dowel pin 15, steel ball 22 is made to be stuck on another circular groove of locating dowel pin, and locating dowel pin 15 is inserted on the knock hole of frame, as shown in Figure 4, now eccentric wheel 18 is by extruding guide wheel 17 thus driving knee group 5 to rotate clockwise, knee group 5 drives pull bar 1 to move before car by bearing pin I12, until block 3 contacts with frame 2, knee group 5 drives lever connection group 9 to rotate counterclockwise simultaneously, brake sleeve 21 is departed from braking rack-track 4, until lever connection group 9 is close to limiting stopper 10.When mine car moves ahead in inclined gallery, closing switch mechanism, eccentric wheel 18 away from knee group 5, thus makes the keying of brake equipment completely by the polling power controlling be applied on pull bar 1.
When hook brake type mine car travels in inclined gallery, leading portion switching mechanism cuts out, and Foot switches mechanism opens, and be namely the catcher work of mine car front portion, the catcher at rear portion does not work.
Claims (7)
1. link up with a brake type mine car, comprise braking catcher, described device is arranged in the frame (2) of mine car rear and front end symmetrically, it is characterized in that, lays braking rack-track (4) in the middle of inclined gallery; Catcher comprises the pull bar (1) be connected with prosthomere mine car or deutomerite mine car, pull bar (1) also can slide through the mounting hole in frame (2) in frame (2), the other end of pull bar (1) is through the orienting sleeve be fixed in frame (7), orienting sleeve (7) inner side connects a stage clip (8), stage clip (8) cover is connected on pull bar (1), the end of pull bar (1) connects a guide plate (6) by nut, and the other end of stage clip (8) contacts with guide plate (6);
Catcher also has a knee group (5) and a lever connection group (9), 90 ° of bent plates that knee group (5) is connected by two symmetries form, and it is hinged that bearing pin I (12) is passed through at the middle part of pull bar (1) and knee group (5) middle part wherein; Lever connection group (9) comprises two symmetrical slippers, one end of two slippers is linked together by brake axle (20), the upper cover of brake axle (20) has the brake sleeve (21) that can rotate around it, teeth groove on brake sleeve (21) catch brake rack-track (4), the other end of lever connection group (9) is hinged on the axle bed (11) that is connected with frame; It is hinged that one end of knee group (5) and the upper medium position of lever connection group (9) pass through bearing pin II (13).
2. hook brake type mine car as claimed in claim 1, it is characterized in that, this device also has a switching mechanism, described switching mechanism comprises eccentric wheel (18), wheel shaft (19) and driving lever (14), eccentric wheel (18) is connected between frame (2) by wheel shaft (19), eccentric wheel (18) is connected by key with wheel shaft (19), wheel shaft (19) is connected by key with driving lever (14), driving lever (14) band movable eccentric wheel (18) and wheel shaft (19) rotate around the hole in frame (2) and extrude knee group (5).
3. hook brake type mine car as claimed in claim 2, it is characterized in that, one end of driving lever (14) has fixed orifice, frame (2) has two knock holees, locating dowel pin (15) is fixed on the knock hole of frame (2) through the fixed orifice on driving lever (14); Locating dowel pin (15) connects with driving lever (14) is dynamic, the bearing pin of locating dowel pin (15) has two circular grooves, the side of driving lever (14) has tapped bore, one end of screw (24) connects a steel ball (22) by spring (23), screw (24) is arranged in tapped bore, and steel ball (22) and one of them circular groove cooperatively interact; When driving lever (14) is connected with one of them knock hole, eccentric wheel (18) and knee group (5) have gap, when driving lever is connected with another knock hole, eccentric wheel (18) contacts with knee group (5).
4. hook brake type mine car as claimed in claim 3, it is characterized in that, through adapter shaft (16) in the topped hole of two bent plates of knee group (5), on adapter shaft (16), between two bent plates of knee group (5), cover connects a guide wheel (17) that can rotate around it, when switching mechanism cuts out, eccentric wheel (18) contacts with guide wheel (17).
5. hook brake type mine car as claimed in claim 4, is characterized in that, uniform some annular knurls on the outer circumference surface of brake sleeve (21).
6. hook brake type mine car as claimed in claim 5, it is characterized in that, the top of described lever connection group (9) has the limiting stopper (10) being fixed on frame (2).
7. the hook brake type mine car as described in claim as arbitrary in claim 1 to 6, is characterized in that, the pull bar (1) of frame (2) inner side is fixed with block (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520646784.5U CN204871054U (en) | 2015-08-25 | 2015-08-25 | Couple braking formula mine car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520646784.5U CN204871054U (en) | 2015-08-25 | 2015-08-25 | Couple braking formula mine car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204871054U true CN204871054U (en) | 2015-12-16 |
Family
ID=54815464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520646784.5U Withdrawn - After Issue CN204871054U (en) | 2015-08-25 | 2015-08-25 | Couple braking formula mine car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204871054U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105109514A (en) * | 2015-08-25 | 2015-12-02 | 徐州工程学院 | Hook-brake type mine car |
| CN112414341A (en) * | 2020-09-29 | 2021-02-26 | 天津旗领机电科技有限公司 | Detection device and detection method for cycloid wheel of planetary cycloid pin gear reducer |
-
2015
- 2015-08-25 CN CN201520646784.5U patent/CN204871054U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105109514A (en) * | 2015-08-25 | 2015-12-02 | 徐州工程学院 | Hook-brake type mine car |
| CN112414341A (en) * | 2020-09-29 | 2021-02-26 | 天津旗领机电科技有限公司 | Detection device and detection method for cycloid wheel of planetary cycloid pin gear reducer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105109514A (en) | Hook-brake type mine car | |
| CN206243192U (en) | Bidirectional safety tongs automatic brake formula mine car | |
| CN204845950U (en) | One -way couple braking formula mine car | |
| CN204871054U (en) | Couple braking formula mine car | |
| CN100460307C (en) | Bidirection overspeed protective device of elevator | |
| CN110395289A (en) | A kind of incline shaft transport vehicle armful rail Self tightening device | |
| CN204871053U (en) | One -way couple formula braking car | |
| CN101575065A (en) | Dynamic windproof device of rail-mounted crane | |
| CN204871055U (en) | Two -way couple formula braking car | |
| CN201264598Y (en) | Impact braking device of trailer | |
| CN205997893U (en) | Two-way double track disc spring brake type mine car | |
| CN205997891U (en) | Unidirectional disc spring brake type mine car with middle braking rail | |
| CN203255167U (en) | Hydraulic braking device for emergency braking of automobile | |
| CN210760788U (en) | Rail holding self-tightening device of inclined shaft transport vehicle | |
| CN204871056U (en) | One -way dish spring braking formula mine car | |
| CN105172829A (en) | Bidirectional hook type braking car | |
| CN208469827U (en) | Bidirectional hook formula automatic brake mine car with tooth form braking rail | |
| CN204647068U (en) | A kind of tractor brake assembly | |
| CN205997892U (en) | Two-way disc spring brake type mine car with middle braking rail | |
| CN204821595U (en) | Dish spring braking formula mine car | |
| CN205997890U (en) | Unidirectional double track disc spring brake type mine car | |
| CN106274965B (en) | A kind of one-way safety clamps automatic brake formula mine car | |
| CN103465926B (en) | A kind of card rail self-locking type catcher for mine car | |
| CN105059311B (en) | Disc spring braking type mine car | |
| CN103953213A (en) | Chain looseness and scission detection device for chain type mechanical parking equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20170609 |