CN112644387B - Escape passage of mining dump truck and using method thereof - Google Patents
Escape passage of mining dump truck and using method thereof Download PDFInfo
- Publication number
- CN112644387B CN112644387B CN202011307791.4A CN202011307791A CN112644387B CN 112644387 B CN112644387 B CN 112644387B CN 202011307791 A CN202011307791 A CN 202011307791A CN 112644387 B CN112644387 B CN 112644387B
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- folding ladder
- platform
- safety door
- spring
- ladder
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- 238000005065 mining Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000035939 shock Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
- B60R3/007—Removable steps or ladders, e.g. foldable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
- B60R3/002—Running boards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
Abstract
The invention discloses an escape passage of a mining dump truck, which comprises a cab platform, wherein the bottom of the cab platform is fixedly connected with a supporting platform, and a straight pedal ladder is connected between the cab platform and the supporting platform; the support platform is rotationally connected with a folding ladder through a first pin shaft, two sides of the support platform are connected with first armrests, two sides of the straight pedal ladder are connected with second armrests, and a connecting frame of the support platform is rotationally connected with a triangular bracket through a second pin shaft; the inner side of the connecting frame is connected with a stop block and a fixed support, the folding ladder is connected with a cylindrical stop block, a spring is connected between the fixed support and the tripod, and the cylindrical stop block is clamped on a hook of the tripod; the cab platform is connected with a guardrail, and the guardrail is provided with a safety door. The invention also discloses a use method of the escape passage of the mining dump truck. The cab platform connected to the mine car cab platform provides an escape passage for a driver, can quickly open a safety door for danger avoidance, and can put down the folding ladder so that the driver can quickly withdraw.
Description
Technical Field
The invention relates to the field of mining dumpers, in particular to a mining dumper escape passage and a using method thereof.
Background
Because of the characteristics of the mining dump truck, the mining dump truck is usually large in size, so that a driver needs to install an additional climbing ladder when getting on or off a vehicle, meanwhile, for safety, an escape channel is also needed to be prepared for the driver on one side of the mine car so that the driver can quickly evacuate when the mine car is in an emergency, a safety door is needed to be arranged at a channel port so as to prevent personnel from falling from the escape channel, the safety door needs to be quickly opened so as to save time for personnel evacuation, and an automatic rebound function is needed so that the safety door is in a normally closed state. In order to facilitate up and down, the lower part of the escape passage is required to be made into a folding mode so as to avoid collision between the lower part of the escape passage and an obstacle on a road surface, the escape passage is always in a folding state when not in use, and the folding part is required to be quickly fallen under emergency.
Most of the existing mining dumpers do not have a proper escape passage, a driver cannot quickly escape under the accident condition, and the escape passage of most of the existing mining dumpers cannot be folded, so that the escape passage can collide with a road surface in the moving process to cause damage, and the folding ladder pedal of most of the existing escape passage is too narrow and is easy to step on the vehicle to slide in a stepping manner under the condition of being panic.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to solve the technical problem of providing an escape passage of a mining dump truck and a use method thereof, wherein a cab platform connected with a cab platform of a mine truck provides an escape passage for a driver, and the escape passage can be used for quickly opening a safety door and putting down a folding ladder when the mining dump truck is used for avoiding danger, so that the driver can quickly withdraw.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme:
The escape passage of the mining dump truck comprises a cab platform, wherein the bottom of the cab platform is fixedly connected with a supporting platform, and a straight pedal ladder is connected between the cab platform and the supporting platform; the support platform is rotationally connected with a folding ladder through a first pin shaft, two sides of the support platform are connected with first armrests, two sides of the straight pedal ladder are connected with second armrests, and a connecting frame of the support platform is rotationally connected with a triangular bracket through a second pin shaft; the inner side of the connecting frame is connected with a stop block and a fixed support, the folding ladder is connected with a cylindrical stop block, a spring is connected between the fixed support and the tripod, and the cylindrical stop block is clamped on a hook of the tripod; the cab platform is connected with a guardrail, and the guardrail is provided with a safety door.
Further, a safety door stop block and an automatic rebound door lock are fixedly connected to the safety door, and the safety door stop block is used for limiting the rotation range of the safety door; the automatic rebound door lock comprises: the safety door comprises a fixing shell, a lock tongue and a fixing buckle, wherein the lock tongue is in sliding connection with the inside of the fixing shell, the lock tongue is sleeved with a clamp spring, the fixing buckle is connected to a guardrail, the fixing shell and a safety door stop block are connected to a safety door, and the lock tongue and the fixing buckle are matched for use.
Further, be provided with solid fixed ring on the guardrail, gu fixed spring's one end is connected on solid fixed ring, and the guardrail is connected to the other end.
Further, the two ends of the spring are provided with hooks, the fixed support and the triangular support are provided with round holes, and the two ends of the hooks are connected in the round holes.
Further, the folding ladder is provided with a pedal, the back of the inner wall of the pedal is fixedly connected with a driving spring, one end of the driving spring is fixedly connected with a limiting plate, one side of the limiting plate penetrates through the folding ladder and extends to the outside of the folding ladder, one side of the limiting plate is fixedly connected with a pull ring, the limiting plate is fixedly connected with an lengthening antiskid plate, the left side of the inner wall of the folding ladder is slidingly connected with a limiting strip, a groove is formed in the limiting strip, and the groove is matched with the limiting plate; the left side of the limit bar is fixedly connected with a pull rod, the left end of the pull rod penetrates through the folding ladder and extends to the outside of the folding ladder, a moving groove is formed in one side of the folding ladder, a driving groove is formed in the other side of the folding ladder, the moving groove is matched with the pull rod, and the limit plate is matched with the driving groove; a sliding groove is formed in one side of the folding ladder, a sliding block is connected in the sliding groove in a sliding manner, a steel wire rope is arranged on the sliding block, the steel wire rope is matched with the pull ring, a guide wheel is connected to one side of the folding ladder, and a fixing block is connected to the surface of the limiting strip; one side of the inner wall of the folding ladder is fixedly connected with a stop block, and a reset spring is fixedly connected between one side of the fixed block opposite to the stop block.
Further, a shock pad is arranged on the supporting platform.
The use method of the escape passage of the mining dump truck comprises the following steps:
when a dangerous accident occurs, the driver of the dump truck opens an automatic rebound door lock after coming out of the cab, opens a safety door and falls to the supporting platform from the cab platform through a direct pedal ladder;
The dumper driver standing on the supporting platform steps on the tail of the triangular bracket of the supporting platform by feet, the hook of the triangular bracket is lifted, the hook is separated from the cylindrical stop block, the folding ladder is put down, and the dumper driver falls to the ground from the folding ladder to complete escape.
Preferably, when the folding ladder is put down, the head of the triangular bracket pushes the limit bar to change the position of the groove, and when the position of the groove moves to the limit plate, the limit bar loses the blocking effect on the limit plate, and the limit plate is pushed out by the driving spring to push the lengthened antiskid plate out; when the folding ladder is required to be folded, the limiting strip is pulled through the pull rod, the groove is moved to the position of the limiting plate, the sliding block is pulled, the pull ring is driven to move through the steel wire rope, the limiting plate is pulled back to the initial position, the pull rod is released, the limiting strip rebounds again under the action of the reset spring, the limiting plate is blocked, and the limiting plate is prevented from being ejected.
Preferably, after the accident is ended, the escape passage needs to be reset, the folding ladder is overturned upwards, the cylindrical stop dog on the folding ladder is clamped on the hook of the triangular bracket, and the hook and the triangular bracket are prevented from loosening under the tensile force of the spring.
Preferably, when the door is closed, the safety door is closed under the tension of the spring, and the bolt is inserted into the fixing buckle under the impulsive force of the door.
3. Advantageous effects
According to the invention, the cab platform connected to the cab platform of the mine car provides an escape passage for a driver, the folding ladder on the escape passage can rotate around the pin shaft fixed on the supporting platform, when the folding ladder is lifted, the cylindrical stop dog welded on the folding ladder can push the triangular bracket to move backwards, the triangular bracket moves to a certain extent, the cylindrical stop dog on the folding ladder can sink into the fixing groove on the triangular bracket, and meanwhile, the triangular bracket returns to the original position under the tensile force of the spring, so that the folding ladder is fixed at the folding position. When the folding ladder is to be put down, a person standing on the supporting platform only needs to pedal the tail part of the triangular bracket higher than the supporting platform by feet, and according to the lever principle, the head part of the triangular bracket can be lifted up by taking the pin shaft as a fulcrum, so that the folding ladder can be put down by lightly pushing the folding ladder.
According to the invention, the folding ladder can rotate around the first pin shaft, when the escape ladder is not used, the folding ladder is retracted, when an emergency (such as fire or the like) occurs to the mine car, a driver firstly descends to the supporting platform from the platform where the cab is located, then steps on the tail of the triangular bracket, the folding ladder is lightly pushed, the folding ladder can be put down, and the mine car is evacuated, and in addition, an anti-slip pedal is arranged on the folding ladder for guaranteeing the safety of personnel.
According to the invention, one end of the safety door is fixed on the guardrail on the cab platform through the pin shaft, the safety door can rotate around the pin shaft, and meanwhile, the spring is arranged between the safety door and the guardrail, so that the safety door has the function of automatically closing the door, and the safety of personnel on the cab platform is ensured.
According to the invention, the safety door on the escape passage can rotate around the pin shaft fixed on the guardrail, the door lock capable of automatically rebounding is arranged on the safety door, when the safety door needs to be opened, the safety door can be opened only by lightly poking the bolt on the door lock, and when the door is closed, the safety door can be automatically closed under the tensile force of the spring, and the bolt capable of automatically rebounding can be automatically inserted into the fixing buckle under the impulsive force of the door closing, so that the safety door is simple and convenient to use.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of an escape passage of a mining dump truck according to the present invention;
FIG. 2 is a partial view of the security door;
FIG. 3 is a partial view of the folding ladder;
FIG. 4 is a schematic view of the motion profile of a folding ladder;
FIG. 5 is a top view of the internal structure of the pedal;
FIG. 6 is a side view of the inner wall structure of the folding ladder;
FIG. 7 is a side view of the surface structure of the folding ladder;
FIG. 8 is a schematic side view of the structure of the stop bar;
FIG. 9 is a detailed view of the fixed spring;
FIG. 10 is an enlarged partial schematic view at B shown in FIG. 2;
FIG. 11 is an enlarged partial schematic view at A shown in FIG. 3;
Fig. 12 is a schematic view of the internal structure of the automatic rebound door lock.
Reference numerals: 1. folding ladder; 2. a first armrest; 3. a support platform; 4. a shock pad; 5. a first pin; 6. a tripod; 7. a spring; 8. a stop block; 9. a second pin; 10. a fixed bracket; 11. a cylindrical stop; 12. straight pedaling ladder; 13. a second armrest; 14. a cab platform; 15. a safety door; 16. a safety door pin shaft; 17. a safety door stop; 18. an automatic rebound door lock; 19. a fixing buckle; 20. a fixed spring; 21. a fixing ring; 22. a pedal; 23. a drive spring; 24. a limiting plate; 25. a pull ring; 26. lengthening the antiskid plate; 27. a limit bar; 28. a groove; 29. a moving groove; 30. a driving groove; 31. a return spring; 32. a chute; 33. a slide block; 34. a wire rope; 35. a guide wheel; 36. a fixed block; 37. a stop block; 38. and (5) a pull rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-12, an embodiment of the present invention is provided:
The escape passage of the mining dump truck comprises a cab platform 14, wherein the bottom of the cab platform 14 is fixedly connected with a supporting platform 3, a straight pedal ladder 12 is fixedly connected between the cab platform 14 and the supporting platform 3 through a fixing bolt, a folding ladder 1 is rotatably connected to the supporting platform 3 through a first pin shaft 5, first armrests 2 are fixedly connected to both sides of the supporting platform 3 and the folding ladder 1, second armrests 13 are fixedly connected to both sides of the straight pedal ladder 12, and a connecting frame of the supporting platform 3 is rotatably connected with a triangular bracket 6 through a second pin shaft 9; the right side of the inner wall of the connecting frame is fixedly connected with a stop block 8 and a fixed bracket 10, the right side of the inner wall of the folding ladder 1 is fixedly connected with a cylindrical stop block 11, and a spring 7 is connected between the fixed bracket 10 and the triangular bracket 6; the top of the cab platform 14 is fixedly connected with a guardrail, the guardrail is provided with a safety door 15, a fixed spring 20 is arranged between the safety door 15 and the guardrail, a fixed ring 21 matched with the fixed spring 20 is arranged on the safety door 15, one end of the fixed spring 20 is connected to the fixed ring 21, and the other end is connected with the guardrail; the safety door 15 is fixedly connected with a safety door stop block 17 and an automatic rebound door lock 18, and the safety door stop block 17 is used for limiting the rotation range of the safety door 15.
In this embodiment, the auto rebound door lock 18 comprises: the safety door comprises a fixing shell, a lock tongue and a fixing buckle 19, wherein the fixing buckle 19 is connected to a guardrail, the fixing shell is connected to a safety door stop block 17, and the lock tongue and the fixing buckle 19 are matched for use; the spring bolt is in the inside sliding connection of fixed shell, the spring bolt include with fixed inclined plane slip table portion of detaining 19 looks adaptation and with the sliding part of fixed shell looks adaptation, sliding part slides in the inside of fixed shell, the inside of fixed shell and be located the surface of spring bolt sliding part are provided with the jump ring, can compress the jump ring when the spring bolt is stirred to outside, release the hand after the user, the jump ring is released the spring bolt again, stir the spring bolt outside when opening the door, can take out the spring bolt from fixed knot 19 to can reach the purpose of opening the door. When the door is closed, the safety door 15 is automatically closed under the tension of the fixed spring 20 and is locked on the guardrail by the automatic rebound door lock 18.
The supporting platform 3 is fixed on the car body of the mine car through bolts.
The folding ladder 1 can rotate around the first pin shaft 5, and when the escape ladder is not used, the folding ladder 1 is retracted. When the mine car is in emergency, such as fire, a driver firstly falls to the supporting platform 3 from the platform where the cab is located, then steps on the tail of the tripod 6 by feet, and lightly pushes the folding ladder 1, so that the folding ladder 1 can be put down and removed from the mine car. In addition, the folding ladder 1 is also provided with an anti-slip pedal for guaranteeing personnel safety.
The supporting platform 3 is fixedly connected with a shock pad 4, and the shock pad 4 is used for buffering the impact force when the folding ladder 1 falls down.
The two ends of the spring 7 are provided with hooks, the fixed support 10 and the triangular support 6 are respectively provided with round holes matched with the spring 7, and the hooks are hooked in the round holes.
The folding ladder 1 is fixedly connected with a pedal 22, the back of the inner wall of the pedal 22 is fixedly connected with a driving spring 23, one end of the driving spring 23 is fixedly connected with a limiting plate 24, one side of the limiting plate 24 penetrates through the folding ladder 1 and extends to the outside of the folding ladder 1, one side of the limiting plate 24 is fixedly connected with a pull ring 25, the limiting plate 24 is fixedly connected with an lengthening antiskid plate 26, the left side of the inner wall of the folding ladder 1 is slidingly connected with a limiting strip 27, a groove 28 is formed in the limiting strip 27, the groove 28 is matched with the limiting plate 24, the left side of the limiting strip 27 is fixedly connected with a pull rod 38, the left end of the pull rod 38 penetrates through the folding ladder 1 and extends to the outside of the folding ladder 1, one side of the folding ladder 1 is provided with a moving groove 29, the other side of the folding ladder 1 is provided with a driving groove 30, the moving groove 29 is matched with the pull rod 38, one side of the folding ladder 1 is provided with a sliding groove 32, the inside of the sliding groove 32 is slidingly connected with a sliding block 33, the sliding block 33 is arranged on the sliding block 33, the sliding block 34 is matched with the sliding block 25, one side of the folding ladder 1 is fixedly connected with a pull ring 35, and the sliding block 36 is fixedly connected with one side of the sliding block 37, and the sliding block 37 is fixedly connected with one side of the sliding block 37.
Working principle:
When a dangerous accident occurs, a dump truck driver walks out of the cab, opens the automatic rebound door lock 18 and opens the safety door 15; the driver descends from the cab platform 14 to the support platform 3 through the straight step ladder 12; when the door is closed, the safety door 15 can be automatically closed under the tension of the spring 20, and the bolt capable of automatically rebounding can be automatically inserted into the fixing buckle 19 under the impulsive force of the door closing.
The dumper driver standing on the supporting platform 3 only needs to tread the tail part of the tripod 6 higher than the supporting platform 3 by feet, the hook of the tripod 6 can be lifted by taking the second pin shaft 9 as a fulcrum according to the lever principle, the hook of the tripod 6 is separated from the cylindrical stop block 11, the folding ladder 1 is put down, and the dumper driver falls to the ground from the folding ladder 1 to complete escape.
When the folding ladder 1 is put down, the head of the tripod 6 pushes the limit bar 27, so that the position of the groove 28 is changed, when the position of the groove 28 moves to the position of the limit plate 24, the limit bar 27 loses the blocking effect on the limit plate 24, the limit plate 24 is pushed out by the driving spring 23, so that the lengthened antiskid plate 26 is pushed out to the outside, the trample is convenient, slipping is prevented, when the folding ladder 1 needs to be folded, the limit bar 27 is pulled by the pull rod 38, the groove 28 moves to the position of the limit plate 24, the sliding block 33 is pulled, the pull ring 25 is driven to move by the steel wire rope 34, so that the limit plate 24 is pulled back to the initial position, the pull rod 38 is released, the limit bar 27 rebounds again under the action of the reset spring 31, the limit plate 24 is blocked, and the limit plate 24 is prevented from being ejected.
After the accident is over, the driver needs to reset the escape passage, the driver turns over the folding ladder 1 upwards, and the cylindrical stop block 11 locks the tripod 6, so that the folding ladder 1 is reset. When the folding ladder 1 is lifted, the cylindrical stop block 11 welded on the folding ladder 1 is clamped on the hook of the triangular bracket 6, and the hook and the triangular bracket 6 are prevented from loosening under the tension of the spring 7.
The terminology used herein is for the purpose of description and illustration only and is not intended to be limiting. As the present invention may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.
Claims (6)
1. The escape passage of the mining dump truck comprises a cab platform and is characterized in that the bottom of the cab platform is fixedly connected with a supporting platform, and a straight pedal ladder is connected between the cab platform and the supporting platform; the support platform is rotationally connected with a folding ladder through a first pin shaft, two sides of the support platform are connected with first armrests, two sides of the straight pedal ladder are connected with second armrests, and a connecting frame of the support platform is rotationally connected with a triangular bracket through a second pin shaft; the inner side of the connecting frame is connected with a connecting frame stop block and a fixed support, the folding ladder is connected with a cylindrical stop block, a spring is connected between the fixed support and the triangular support, the cylindrical stop block is clamped on a hook of the triangular support, hooks are arranged at two ends of the spring, round holes are formed in the fixed support and the triangular support, and the hooks are connected in the round holes; the cab platform is connected with a guardrail, the guardrail is provided with a safety door, a safety door stop block and an automatic rebound door lock are fixedly connected to the safety door, and the safety door stop block is used for limiting the rotation range of the safety door; the automatic rebound door lock comprises: the safety door comprises a fixing shell, a lock tongue and a fixing buckle, wherein the lock tongue is in sliding connection in the fixing shell, the lock tongue is sleeved with a clamp spring, the fixing buckle is connected to a guardrail, the fixing shell and a safety door stop block are connected to a safety door, and the lock tongue and the fixing buckle are matched for use; the guardrail is provided with a fixed ring, one end of the fixed spring is connected to the fixed ring, and the other end is connected with the guardrail; the folding ladder is provided with a pedal, the back of the inner wall of the pedal is fixedly connected with a driving spring, one end of the driving spring is fixedly connected with a limiting plate, one side of the limiting plate penetrates through the folding ladder and extends to the outside of the folding ladder, one side of the limiting plate is fixedly connected with a pull ring, the limiting plate is fixedly connected with an lengthening antiskid plate, the left side of the inner wall of the folding ladder is slidingly connected with a limiting strip, a groove is formed in the limiting strip, and the groove is matched with the limiting plate; the left side of the limit bar is fixedly connected with a pull rod, the left end of the pull rod penetrates through the folding ladder and extends to the outside of the folding ladder, a moving groove is formed in one side of the folding ladder, a driving groove is formed in the other side of the folding ladder, the moving groove is matched with the pull rod, and the limit plate is matched with the driving groove; a sliding groove is formed in one side of the folding ladder, a sliding block is connected in the sliding groove in a sliding manner, a steel wire rope is arranged on the sliding block, the steel wire rope is matched with the pull ring, a guide wheel is connected to one side of the folding ladder, and a fixing block is connected to the surface of the limiting strip; one side of the inner wall of the folding ladder is fixedly connected with a folding ladder stop block, and a reset spring is fixedly connected between one side of the fixed block opposite to the folding ladder stop block.
2. The escape passage of the mining dump truck according to claim 1, wherein a shock pad is arranged on the supporting platform.
3. The use method of the escape passage of the mining dump truck according to any one of claims 1 or 2, characterized by comprising:
when a dangerous accident occurs, the driver of the dump truck opens an automatic rebound door lock after coming out of the cab, opens a safety door and falls to the supporting platform from the cab platform through a direct pedal ladder;
The dumper driver standing on the supporting platform steps on the tail of the triangular bracket of the supporting platform by feet, the hook of the triangular bracket is lifted, the hook is separated from the cylindrical stop block, the folding ladder is put down, and the dumper driver falls to the ground from the folding ladder to complete escape.
4. The method for using the escape passage of the mining dump truck according to claim 3, wherein the head of the tripod pushes the limit bar to change the position of the groove when the folding ladder is put down, and when the position of the groove moves to the limit plate, the limit bar loses the blocking effect on the limit plate, and the limit plate is pushed out by the driving spring to push the lengthened antiskid plate out; when the folding ladder is required to be folded, the limiting strip is pulled through the pull rod, the groove is moved to the position of the limiting plate, the sliding block is pulled, the pull ring is driven to move through the steel wire rope, the limiting plate is pulled back to the initial position, the pull rod is released, the limiting strip rebounds again under the action of the reset spring, the limiting plate is blocked, and the limiting plate is prevented from being ejected.
5. The method for using the escape passage of the mining dump truck according to claim 3, wherein the escape passage is required to be reset after an accident is ended, the folding ladder is turned upwards, a cylindrical stop block on the folding ladder is clamped on a hook of the triangular bracket, and the hook and the triangular bracket are prevented from loosening under the tensile force of a spring.
6. The method of claim 3, wherein the safety door is closed under the tension of the spring when the door is closed, and the latch inserts the latch into the fixing buckle under the force of the door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011307791.4A CN112644387B (en) | 2020-11-20 | 2020-11-20 | Escape passage of mining dump truck and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011307791.4A CN112644387B (en) | 2020-11-20 | 2020-11-20 | Escape passage of mining dump truck and using method thereof |
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| CN112644387A CN112644387A (en) | 2021-04-13 |
| CN112644387B true CN112644387B (en) | 2024-06-25 |
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| CN202011307791.4A Active CN112644387B (en) | 2020-11-20 | 2020-11-20 | Escape passage of mining dump truck and using method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116675162B (en) * | 2023-07-19 | 2023-11-17 | 国网安徽省电力有限公司霍山县供电公司 | High-safety high-altitude operation equipment for intelligent power transmission and distribution system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214084053U (en) * | 2020-11-20 | 2021-08-31 | 内蒙古北方重型汽车股份有限公司 | Escape passage of mining dump truck |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030221908A1 (en) * | 2002-05-29 | 2003-12-04 | Donald Fix | Foldable safety apparatus for an upper region of a ready-mix concrete truck |
| CN104590135B (en) * | 2015-01-28 | 2016-10-12 | 江苏捷诚车载电子信息工程有限公司 | Folded turnover formula access step |
| CN206409178U (en) * | 2016-12-19 | 2017-08-15 | 宁波市鄞州宝运国际贸易有限公司 | A kind of folding ladder suitable for vehicle |
| CN107696977B (en) * | 2017-10-09 | 2024-02-20 | 内蒙古北方重型汽车股份有限公司 | Using method of folding stair of mining dump truck |
| CN211943136U (en) * | 2020-04-22 | 2020-11-17 | 无锡中车新能源汽车有限公司 | Turnover folding ladder for cross-country motor home |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214084053U (en) * | 2020-11-20 | 2021-08-31 | 内蒙古北方重型汽车股份有限公司 | Escape passage of mining dump truck |
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