CN108487803B - Lock mechanism of fire engine back door - Google Patents
Lock mechanism of fire engine back door Download PDFInfo
- Publication number
- CN108487803B CN108487803B CN201810496909.9A CN201810496909A CN108487803B CN 108487803 B CN108487803 B CN 108487803B CN 201810496909 A CN201810496909 A CN 201810496909A CN 108487803 B CN108487803 B CN 108487803B
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- China
- Prior art keywords
- rope
- lock
- fire truck
- locking
- connecting plate
- 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.)
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- 230000007246 mechanism Effects 0.000 title claims abstract description 39
- 238000003825 pressing Methods 0.000 claims abstract description 37
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
- E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
- E05B83/18—Locks for luggage compartments, car boot lids or car bonnets for car boot lids or rear luggage compartments
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Lock And Its Accessories (AREA)
- Special Wing (AREA)
Abstract
The invention relates to the technical field of fire truck accessories, in particular to a lock mechanism of a fire truck rear-turning door, which structurally comprises a rope, a connecting plate, a rope adjusting seat, a pressing piece, locking pins, locking pin fixing seats and two limiting rollers, wherein the connecting plate is arranged above the rope, the pressing piece can vertically press the connecting plate, the locking pins are respectively arranged at two ends of the rope, the locking pin fixing seats are provided with locking pin holes, compression springs are arranged in the locking pin holes, the locking pins are connected with the end parts of the rope through the compression springs so that the locking pins can horizontally move in the locking pin holes, and the rope penetrates through and is fixed on the two rope adjusting seats. The vertical pressing movement of the pressing piece is converted into the horizontal telescopic movement of the rope, so that the locking mechanism can be opened and locked, and the operation is very convenient; during installation, only the lock holes matched with the lock pins are respectively punched on the door frames on two sides in a matched manner, so that the installation structure of the whole lock mechanism is greatly simplified, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of fire truck accessories, in particular to a lock mechanism of a fire truck rear-turning door.
Background
Firefighters often need to open the rear turndown door to pick up and place fire equipment in the fire extinguishing process of using the fire truck. Most of the existing fire truck rear-turning doors are controlled to be opened automatically by adopting a gas spring, and a few of the existing fire truck rear-turning doors are controlled to be opened by adopting a hydraulic cylinder or an air cylinder. The lock structure of the gas spring is limited by the thrust of the gas spring, the gas spring can only control the opening of the upturned door to the maximum angle and can not open a certain angle at will, the lock structure is inconvenient to use, and when the thrust of the gas spring is large, larger acting force is generated on the installation hinge, the hinge is easy to loosen, inconvenience is caused to maintenance, and potential safety hazards exist; the lock structure of the hydraulic cylinder or the air cylinder can control the opening angle, but has the advantages of high manufacturing cost, higher maintenance cost and larger occupied space; in addition, both lock structures are relatively complex to install.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art, and provides the locking mechanism for the rear-turning door of the fire engine, which is simple to install and operate, convenient to maintain, cost-saving and reliable in locking.
The aim of the invention is achieved by the following technical scheme:
the utility model provides a locking mechanism of fire engine back door that turns over, including rope, be located the connecting plate of rope top, be fixed in the rope adjustment seat that is used for adjusting rope length at the both ends of connecting plate lower surface respectively, be fixed in the pressing piece that can press the connecting plate perpendicularly of connecting plate upper surface, set up in the lockpin at rope both ends respectively and be used for fixing the lockpin fixing base of lockpin, wherein: the lock pin fixing seat is provided with a lock pin hole, a compression spring is arranged in the lock pin hole, the lock pin is connected with the end part of the rope through the compression spring so that the lock pin can horizontally move in the lock pin hole, and the rope penetrates through and is fixed on the two rope adjusting seats so that a section of rope between the rope adjusting seats and the lock pin is in a horizontal tensioning state; the two limiting rollers are arranged below the rope and are in abutting contact with the rope, and the two limiting rollers are respectively located on the outer sides close to the lock pin fixing seat.
In the technical scheme, the fire truck rear door locking device further comprises a lock box fixed to the fire truck rear door, and the limiting idler wheels and the lock pin fixing seats are fixed in the lock box.
According to the technical scheme, the rope limiting block is arranged between the limiting roller and the lock pin, the guide groove for enabling the rope to keep in a horizontal state is formed in the rope limiting block, and the rope limiting block is fixed in the lock box.
According to the technical scheme, the fire truck rear-turning door comprises a handle fixed on the fire truck rear-turning door, and the pressing piece penetrates through the handle and is fixedly connected with the connecting plate at the tail end of the pressing piece.
In the above technical scheme, the pressing piece set up in the middle part of handle, rope, connecting plate, two rope adjusting seats and two spacing gyro wheels all are symmetrical setting with the pressing piece as the center.
In the above technical scheme, the pressing piece is a button.
In the above technical scheme, the fire truck door frame further comprises a lock hole arranged on the fire truck door frame, and the extending end of the lock pin is matched with the lock hole.
In the technical scheme, the locking pin fixing seat further comprises a locking pin limiting plate, and the locking pin limiting plate is fixedly connected with the locking pin fixing seat.
In the technical scheme, the rope is a steel wire rope.
The invention has the beneficial effects that:
according to the lock mechanism of the rear-turning door of the fire truck, the length and the tightness of the whole rope are adjusted in advance through the rope adjusting seat, and the lock pin is limited to be capable of extending and retracting horizontally only through the lock pin fixing seat without up-down, left-right and rotary movement. When the fire truck is used, when the lock mechanism is in a locking state, the lock pins at the two ends of the rope are just inserted into lock holes on door frames at the two sides of the rear turndown door of the fire truck, and the compression spring enables the rope to be in a horizontal stretched state all the time. When the connecting plate is vertically pressed downwards through the pressing piece, the rope adjusting seat moves downwards along with the connecting plate, at the moment, the vertical pressing movement of the pressing piece is converted into the horizontal telescopic movement of the rope through the guiding action of the limiting roller, a section of rope between the rope adjusting seat and the limiting roller is changed into an inclined straight line from a horizontal straight line, the length of the section of rope between the rope adjusting seat and the limiting roller is increased, the whole rope is driven to move from two ends to the center because the length of the whole rope is fixed, and then the locking pin at the end part of the rope is driven to move to the center and move out of the locking hole, namely the locking mechanism is opened, after a firefighter opens the rear turndown door to take out the firefighting equipment, the rear turndown door is closed, at the moment, only the pressing piece is required to restore to the original position, the connecting plate moves upwards, at the moment, under the guiding action of the limiting roller, the section of rope between the rope adjusting seat and the limiting roller is restored to the horizontal straight line from the inclined straight line state from the center to the two ends, and at the same time under the action of the compression spring, the locking pin is pushed outwards to enter the locking hole, namely the locking mechanism is locked. In the operation process, the locking mechanism can be opened and locked only by converting the vertical pressing motion of the pressing piece into the horizontal telescopic motion of the rope, so that the operation is very convenient; during installation, only the lock holes matched with the lock pins are respectively punched on the door frames on two sides in a matched manner, no additional lock catch is needed, the installation structure of the whole lock mechanism is greatly simplified, compared with the complex structures such as a gas spring and a hydraulic cylinder in the prior art, the cost is greatly reduced, and the maintenance is very convenient.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
Fig. 1 is a schematic structural view of a locking mechanism of a rear swing door of a fire truck according to the present invention.
Fig. 2 is a schematic view of another angle of a lock mechanism of a rear swing door of a fire truck according to the present invention.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 1.
Fig. 4 is an enlarged schematic view of the structure at B in fig. 1.
Reference numerals:
rope 1, connecting plate 2, rope adjusting seat 3, pressing piece 4, lockpin 5;
the lock pin fixing seat 6, the lock pin hole 61, the compression spring 7 and the limit roller 8; rope stopper 9, guide groove 91;
lock box 10, handle 11, lockpin limiting plate 12, lockhole 13, back flip door 14.
Detailed Description
The invention will be further described with reference to the following examples and figures.
The lock mechanism of the rear door of the fire truck of this embodiment, as shown in fig. 1 and 2, includes a rope 1, a connecting plate 2 located above the rope 1, rope adjusting seats 3 fixed at two ends of the lower surface of the connecting plate 2 for adjusting the length of the rope 1, a pressing member 4 fixed on the upper surface of the connecting plate 2 and capable of pressing the connecting plate 2 vertically, locking pins 5 arranged at two ends of the rope 1 and locking pin fixing seats 6 for fixing the locking pins 5, wherein: as shown in fig. 4, the latch fixing seat 6 is provided with a latch pin hole 61, a compression spring 7 is arranged in the latch pin hole 61, the latch pin 5 is connected with the end part of the rope 1 through the compression spring 7 so that the latch pin 5 can horizontally move in the latch pin hole 61, and the rope 1 is fixedly penetrated through the two rope adjusting seats 3 so that a section of rope 1 between the rope adjusting seats 3 and the latch pin 5 is in a horizontal tensioning state. As shown in fig. 3, the lock mechanism further includes two limiting rollers 8 disposed below the rope 1 and contacting the rope 1 in a propping manner, where the two limiting rollers 8 are located at the outer sides of the locking pin fixing seat 6 respectively. The lock mechanism further comprises a lock hole 13 (see fig. 1) arranged on the fire truck door frame, and the extending end of the lock pin 5 is matched with the lock hole 13. According to different working conditions, the tail end of the lock pin 5 can be processed into different shapes so as to be smoothly locked.
The working principle is as follows: the length and the tightness of the whole rope 1 are adjusted in advance through the rope adjusting seat 3, and the lock pin 5 is limited to be capable of extending and retracting horizontally through the lock pin fixing seat 6 without up-down, left-right and rotation. When the fire truck is used, when the lock mechanism is in a locking state, the lock pins 5 at the two ends of the rope 1 are just inserted into the lock holes 13 on the door frames at the two sides of the rear turndown door 14 of the fire truck, and the compression spring 7 enables the rope 1 to be in a horizontal stretched state all the time. When the connecting plate 2 is vertically pressed downwards by the pressing piece 4, the rope adjusting seat 3 moves downwards along with the connecting plate 2, at the moment, the vertical pressing motion of the pressing piece 4 is converted into the horizontal telescopic motion of the rope 1 through the guiding action of the limiting roller 8, a section of rope 1 between the rope adjusting seat 3 and the limiting roller 8 is changed into an inclined straight line from a horizontal straight line, the length of a section of rope 1 between the rope adjusting seat 3 and the limiting roller 8 is increased, the whole rope 1 is driven to move from two ends to the center due to the fact that the length of the whole rope 1 is fixed, and then the locking pin 5 at the end part of the rope 1 is driven to move to the center and move out of the locking hole 13, namely, the locking mechanism is opened, then after the fire fighter opens the back door 14 to take out fire fighting equipment, the back door 14 is closed, at the moment, only the pressing piece 4 is required to be restored to be at the original position, at the moment, the connecting plate 2 moves upwards, at the moment, a section of rope 1 between the rope adjusting seat 3 and the limiting roller 8 is restored to the horizontal straight line state from the inclined straight line under the guiding action of the limiting roller 8, the whole rope 1 moves from the center to two ends, at the same time, under the action of the compressing spring 7, the action of the locking pin 5 is pushed outwards and enters the locking mechanism 13, namely, and is locked.
In this embodiment, the fire truck further comprises a lock box 10 fixed on the fire truck back door 14, wherein the limit roller 8 and the lock pin fixing seat 6 are both fixed in the lock box 10, and the lock box 10 plays a role in protection.
In this embodiment, as shown in fig. 1, a rope stopper 9 is disposed between the limiting roller 8 and the lock pin 5, the rope stopper 9 is provided with a guide groove 91 for keeping the rope 1 in a horizontal state, and the rope stopper 9 is fixed in the lock case 10. For the long rope 1, in order to control the rope 1 to be on the horizontal line, a rope limiting block 9 is additionally arranged in the area between the limiting roller 8 and the locking pin 5, and the rope 1 is further limited through a guide groove 91.
In this embodiment, as shown in fig. 1 and 3, the lock mechanism further includes a handle 11 fixed to a rear door 14 of the fire truck, the pressing member 4 penetrates through the handle 11, and the end of the pressing member 4 is fixedly connected with the connecting plate 2. The handle 11 facilitates the firefighter to open and close the back door 14. The pressing piece 4 is arranged in the middle of the handle 11, and the rope 1, the connecting plate 2, the two rope adjusting seats 3 and the two limiting rollers 8 are symmetrically arranged with the pressing piece 4 as the center. So that the locking mechanisms at the two sides of the pressing piece 4 are synchronous, and the accuracy of the locking mechanisms is improved. As a preferred embodiment, the pressing member 4 is a button. When the button is pressed, the lock mechanism is opened, and when the button returns, the lock mechanism is locked.
In this embodiment, as shown in fig. 4, the lock mechanism further includes a lock pin limiting plate 12, and the lock pin limiting plate 12 is fixedly connected with the lock pin fixing seat 6. The lock pin 5 is further limited by the lock pin fixing seat 6 and the lock pin limiting plate 12, so that the lock pin 5 can only horizontally stretch and retract without up-down, left-right and rotation movement, and stable and accurate unlocking and locking are achieved.
In the embodiment, the rope 1 is a steel wire rope, and has the advantages of good wear resistance, high hardness, strong tensile resistance and difficult rusting.
Compared with the prior art, the lock mechanism can be opened and locked only by converting the vertical pressing motion of the pressing piece 4 into the horizontal telescopic motion of the rope 1 in the operation process, and is very convenient to operate; during installation, only the lock holes 13 matched with the lock pins 5 are respectively punched on the door frames on two sides in a matched manner, no additional lock catch is needed, the installation structure of the whole lock mechanism is greatly simplified, compared with the complex lock structures such as a gas spring, a hydraulic cylinder and the like, the cost is greatly reduced, and the maintenance is very convenient.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a locking mechanism of fire engine back door that turns over which characterized in that: the device comprises a rope, a connecting plate positioned above the rope, rope adjusting seats which are respectively fixed at two ends of the lower surface of the connecting plate and used for adjusting the length of the rope, a pressing piece which is fixed on the upper surface of the connecting plate and can perpendicularly press the connecting plate, locking pins which are respectively arranged at two ends of the rope and locking pin fixing seats which are used for fixing the locking pins, wherein the locking pins are formed by the device comprising: the lock pin fixing seat is provided with a lock pin hole, a compression spring is arranged in the lock pin hole, the lock pin is connected with the end part of the rope through the compression spring so that the lock pin can horizontally move in the lock pin hole, and the rope penetrates through and is fixed on the two rope adjusting seats so that a section of rope between the rope adjusting seats and the lock pin is in a horizontal tensioning state; the two limiting rollers are arranged below the rope and are in abutting contact with the rope, and the two limiting rollers are respectively located on the outer sides close to the lock pin fixing seat.
2. The fire truck roll-back door lock mechanism of claim 1, wherein: the fire truck lock is characterized by further comprising a lock box fixed on the rear door of the fire truck, and the limiting idler wheels and the lock pin fixing seat are both fixed in the lock box.
3. The fire truck roll-back door lock mechanism of claim 2, wherein: a rope limiting block is arranged between the limiting roller and the lock pin, a guide groove for enabling the rope to keep in a horizontal state is formed in the rope limiting block, and the rope limiting block is fixed in the lock box.
4. The fire truck roll-back door lock mechanism of claim 2, wherein: the fire truck is characterized by further comprising a handle fixed on the fire truck rear-turning door, and the pressing piece penetrates through the handle and the tail end of the pressing piece is fixedly connected with the connecting plate.
5. The locking mechanism for a rear roll-over door of a fire engine of claim 4, wherein: the pressing piece is arranged in the middle of the handle, and the rope, the connecting plate, the two rope adjusting seats and the two limiting rollers are symmetrically arranged with the pressing piece as the center.
6. A fire truck roll-back door lock mechanism according to claim 1 or 5, wherein: the pressing piece is a button.
7. The fire truck roll-back door lock mechanism of claim 1, wherein: the fire truck door lock further comprises a lock hole arranged on the fire truck door frame, and the extending end of the lock pin is matched with the lock hole.
8. The fire truck roll-back door lock mechanism of claim 1, wherein: the locking pin fixing seat is fixedly connected with the locking pin fixing seat.
9. The fire truck roll-back door lock mechanism of claim 1, wherein: the rope is a steel wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810496909.9A CN108487803B (en) | 2018-05-22 | 2018-05-22 | Lock mechanism of fire engine back door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810496909.9A CN108487803B (en) | 2018-05-22 | 2018-05-22 | Lock mechanism of fire engine back door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108487803A CN108487803A (en) | 2018-09-04 |
| CN108487803B true CN108487803B (en) | 2024-03-29 |
Family
ID=63350958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810496909.9A Active CN108487803B (en) | 2018-05-22 | 2018-05-22 | Lock mechanism of fire engine back door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108487803B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120000972U (en) * | 2010-07-30 | 2012-02-09 | 주식회사 아이레보 | A Electric Door Lock Device having a Good Clutch Connecting Structure |
| CN103623526A (en) * | 2012-08-30 | 2014-03-12 | 江苏卡威专用汽车制造有限公司 | Trolley locking mechanism for fire fighting truck |
| KR20160038917A (en) * | 2014-09-30 | 2016-04-08 | 현대자동차주식회사 | Latch struture of tail-gate |
| CN106917552A (en) * | 2017-03-30 | 2017-07-04 | 广州畅翼汽车配件有限责任公司 | A kind of duplex type automobile tail gate electricity inhales latch mechanism |
| CN107830372A (en) * | 2017-11-08 | 2018-03-23 | 上海格拉曼国际消防装备有限公司 | The two-way slide unit of used in fire-fighting |
| CN208486710U (en) * | 2018-05-22 | 2019-02-12 | 广东永强奥林宝国际消防汽车有限公司 | The latch mechanism of overhead door after a kind of fire fighting truck |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9714532B2 (en) * | 2013-07-11 | 2017-07-25 | Inteva Products, Llc | Latch assembly with pawl switch override device |
-
2018
- 2018-05-22 CN CN201810496909.9A patent/CN108487803B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120000972U (en) * | 2010-07-30 | 2012-02-09 | 주식회사 아이레보 | A Electric Door Lock Device having a Good Clutch Connecting Structure |
| CN103623526A (en) * | 2012-08-30 | 2014-03-12 | 江苏卡威专用汽车制造有限公司 | Trolley locking mechanism for fire fighting truck |
| KR20160038917A (en) * | 2014-09-30 | 2016-04-08 | 현대자동차주식회사 | Latch struture of tail-gate |
| CN106917552A (en) * | 2017-03-30 | 2017-07-04 | 广州畅翼汽车配件有限责任公司 | A kind of duplex type automobile tail gate electricity inhales latch mechanism |
| CN107830372A (en) * | 2017-11-08 | 2018-03-23 | 上海格拉曼国际消防装备有限公司 | The two-way slide unit of used in fire-fighting |
| CN208486710U (en) * | 2018-05-22 | 2019-02-12 | 广东永强奥林宝国际消防汽车有限公司 | The latch mechanism of overhead door after a kind of fire fighting truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108487803A (en) | 2018-09-04 |
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