CN105539297A - Fire fighting truck passenger room rotary pedal - Google Patents
Fire fighting truck passenger room rotary pedal Download PDFInfo
- Publication number
- CN105539297A CN105539297A CN201510963386.0A CN201510963386A CN105539297A CN 105539297 A CN105539297 A CN 105539297A CN 201510963386 A CN201510963386 A CN 201510963386A CN 105539297 A CN105539297 A CN 105539297A
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- CN
- China
- Prior art keywords
- pedal body
- pedal
- crew department
- fire extinguishing
- rotating shaft
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Control Devices (AREA)
Abstract
The invention relates to the technical field of fire fighting trucks, in particular to a fire fighting truck passenger room rotary pedal. The fire fighting truck passenger room rotary pedal structurally comprises a pedal body. The pedal body is hidden inside in a common state. When a passenger room door is opened, the pedal body is rotated along with the door to be exposed so as to be trodden. A friction plate with the position fixed relative to a passenger room is arranged below the moving track of the pedal body. The pedal body makes contact with the friction plate when bearing downward treading force. The pedal body and the friction plate are rubbed in the exposing moving direction till the pedal body is braked. Compared with the prior art, disengagement and engagement between the friction plate and the pedal body are controlled and the braking state and the braking releasing state of the pedal body are rapidly switched so that it can be guaranteed that firemen can rapidly and safely get in and come out of the passenger room; and especially under the condition of narrow space rescue and night rescue during which the passenger room door cannot be completely opened, the potential safety hazard that the firemen fall down when getting on and off the pedal body rapidly is effectively avoided, and therefore precious rescue time is saved.
Description
Technical field
The present invention relates to fire extinguishing tanker technical field, particularly relate to fire extinguishing tanker crew department rotary pedal.
Background technology
Along with the development of science and technology, fire extinguishing tanker comprises air compressing foam class fire extinguishing tanker, water tank foam fire truck, emergency rescue fire vehicle etc.Current fire extinguishing tanker possesses independently crew department mostly, crew department be usually located at operator's compartment and for carry fluid reservoir (water or fire foam are equipped with in inside) envelope between, crew department be provided with for fire fighter turnover crew department's door.Because the vehicle chassis of fire extinguishing tanker is higher, along the position of below, stair-stepping pedal (namely having with the pedal of topping bar) is installed at corresponding crew department's door.
Existing pedal is to weld or mode by means of fastener is fixed on the vehicle frame of the below of crew department's door mostly, although this dead pedal structure can meet the requirement that fire fighter gets on or off the bus, but its defect is: 1) pedal is arranged on the below of crew department's door and exposes to the sidepiece of vehicle body, therefore take more rescue space, and easily damaged; 2) need position fire extinguishing tanker being rested in its both sides spaciousness during rescue, and crew department's door will be opened completely fire fighter just can be made to be passed in and out by pedal, thus cause the turnover of fire fighter inconvenient, affect rescue speed; Particularly, when running into, space, place of requiring assistance is very narrow and small, and when fire extinguishing tanker crew department door cannot be opened completely, causes fire fighter cannot realize getting on or off the bus by fixing pedal, thus seriously delays valuable rescue time.
For solving the problems of the technologies described above, Chinese invention patent ZL.201210502564.6 discloses a kind of rotary foot pedal structure of crew department of fire extinguishing tanker, its technical scheme comprises tread plate body, this tread plate body and described crew department's underframe pivotal joint, and be connected with described crew department's door, when crew department's door is closed, described tread plate body opens up the bottom into described crew department, and when described crew department's door is opened, described tread plate body puts on display the bottom of crew department with crew department's door.Although above-mentioned rotary foot pedal structure achieves the interlock of crew department's door and tread plate, tread plate can be launched and the bottom hidden to crew department of stretching along with the opening and closing of crew department's door thereupon, thus avoid the damage of tread plate and be conducive to shortening rescue time.But, this foot pedal structure Problems existing is, when fire fighter needs urgent discrepancy and opens crew department's door fast, tread plate body is also along with crew department's door puts on display the bottom of crew department fast, when fire fighter walk out crew department set foot on tread plate body time, due to inertia, tread plate body is still in rotation, thus safety when cannot ensure that fire fighter passes in and out fast, under the environment of the narrow and small rescue especially cannot opened completely at crew department's door and rescue at night, be more prone to occur that fire fighter is on fast, the potential safety hazard of falling down during the pedal of downstairs shape, thus delay valuable rescue time.
Summary of the invention
There is above-mentioned technical matters for prior art, the invention provides a kind of fire fighter of guarantee fast and the crew department that comes in and goes out safely, the crew department of fire extinguishing tanker that do not delay rescue time rotate ladder.
For achieving the above object, the invention provides following technical scheme:
Fire extinguishing tanker crew department is provided rotary pedal, comprise pedal body, pedal body is built-in under normal conditions, rotate to exposing for trampling when crew department's door is opened thereupon, the friction plate fixing with crew department's relative position is provided with in the below of pedal body motion track, the pedal force that pedal body is subject to down then contacts described friction plate, and pedal body and described friction plate are stopped to pedal body stop along being exposed moving direction friction.
Wherein, described pedal body is provided with friction rubber, when pedal body be subject to pedal force down then described friction rubber contact described friction plate, pedal body to contact by described friction rubber the friction force produced and pedal body is stopped stop with described friction plate.
Wherein, fire extinguishing tanker crew department rotary pedal also comprises and the suspension bracket assembly be fixedly connected with bottom crew department and the rotating shaft assembly be connected with described suspension bracket assembly, described pedal body is by described rotating shaft assembly and the pivot joint of described suspension bracket assembly, and described friction plate is fixedly connected with described suspension bracket assembly.
Wherein, described rotating shaft assembly comprises rotating shaft, is arranged at the elastic component for pedal body described in jack-up on described rotating shaft top and is sheathed on the single direction thrust ball bearing of described rotating shaft, and the top of described single direction thrust ball bearing and the bottom of described elastic component touch.
Wherein, described pedal body comprises panel, base plate, side plate and connects the screw rod of described panel and base plate, side plate is fixedly connected with described base plate with described panel respectively, described screw rod is arranged in described rotating shaft, and described panel and described base plate all offer the corresponding axis hole for sheathed described rotating shaft and described screw rod.
Wherein, described friction rubber is arranged at described panel.
Wherein, the baffle assembly that described suspension bracket assembly comprises suspension bracket body and is connected with described suspension bracket body, described suspension bracket body is fixedly connected with bottom described crew department, and described friction plate is fixedly connected on described baffle assembly.
Wherein, described suspension bracket assembly also comprises side and strengthens assembly, and described rotating shaft assembly also comprises the axle sleeve being sheathed on described rotating shaft, and described side is strengthened assembly and is fixedly connected with described axle sleeve with described suspension bracket body respectively.
Wherein, described crew department rotates ladder and also comprises decoration panel, described decoration panel is fixedly connected with described pedal body, described decoration panel is connected with described crew department's door by guiding mechanism, when crew department's door is opened, described crew department's door drives described decoration panel to move by described guiding mechanism.
Wherein, described guiding mechanism comprises orienting lug and the axis of guide, and orienting lug is fixed on the bottom of described crew department's door and described orienting lug offers guide groove, and the top of decoration panel is fixed in one end of the described axis of guide, and its other end is inserted in described guide groove.
beneficial effect of the present invention:
Fire extinguishing tanker crew department rotary pedal of the present invention, comprise pedal body, pedal body is built-in under normal conditions, rotate to exposing for trampling when crew department's door is opened thereupon, the friction plate fixing with crew department's relative position is provided with in the below of pedal body motion track, the pedal force that pedal body is subject to down then contacts described friction plate, and pedal body and friction plate are stopped to pedal body stop along being exposed moving direction friction.During work, pedal body is trampled for fire fighter along with crew department's door is opened and rotated to expose, when fire fighter sets foot on pedal body, pedal body is subject to pedal force then contact friction plate down, the friction force that pedal body contacts with friction plate and produces makes pedal body be stopped to stop, now pedal body is in braking state, and such fire fighter can be come in and gone out by pedal body crew department safely; When fire fighter leaves pedal body, pedal body is separated with friction plate, thus removes the braking state of pedal body.Compared with prior art, the present invention is by controlling the clutch between friction plate and pedal body, achieve pedal body automatically to switch fast at braking state with under removing brake two states along with fire fighter sets foot on and leave pedal body in rotary course, thus ensure that fire fighter can come in and go out crew department fast and safely, under the condition of the narrow and small rescue especially cannot opened completely at crew department's door and rescue at night, effectively avoid fire fighter on fast, the potential safety hazard of falling down during lower pedal body, thus save valuable rescue time, promote rescue speed, realize the Quick rescue task of racing against time.
Accompanying drawing explanation
Fig. 1 is the structural representation of fire extinguishing tanker crew department rotary pedal of the present invention.
Fig. 2 is the decomposition texture schematic diagram of fire extinguishing tanker crew department rotary pedal of the present invention.
Fig. 3 is the decomposition texture schematic diagram of the rotating shaft assembly of fire extinguishing tanker crew department rotary pedal of the present invention.
Fig. 4 is the decomposition texture schematic diagram of the pedal body of fire extinguishing tanker crew department rotary pedal of the present invention.
Fig. 5 is the structural representation of the braking state that the pedal body of fire extinguishing tanker crew department rotary pedal of the present invention contacts with friction plate.
Fig. 6 is the mounting structure schematic diagram of the pedal body of fire extinguishing tanker crew department rotary pedal of the present invention brake film when being in braking state.
Fig. 7 is the decomposition texture schematic diagram of the guiding mechanism of fire extinguishing tanker crew department rotary pedal of the present invention.
Fig. 8 is the structural representation of the decoration assembly of fire extinguishing tanker crew department rotary pedal of the present invention.
Reference numeral:
Suspension bracket assembly 1, suspension bracket body 11, baffle assembly 12, side strengthen assembly 13;
Pedal body 2, panel 21, axis hole 211, base plate 22, side plate 23, screw rod 24, screw rod orienting sleeve 25;
Rotating shaft assembly 3, rotating shaft 31, Compress Spring 32, single direction thrust ball bearing 33, axle sleeve 34;
Decoration assembly 4, decoration panel 41, decorative interior panel 42, Lamp holder 421, limiting stopper 422;
Guiding mechanism 43, orienting lug 431, guide groove 4311, the axis of guide 432, upholstery border 44;
Friction plate 5;
Friction rubber 6;
Attaching parts 7.
Detailed description of the invention
Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in detail.
The fire extinguishing tanker crew department rotary pedal of the present embodiment, as shown in Figure 1 to Figure 3, comprise pedal body 2, see Fig. 2 with the suspension bracket assembly 1 be fixedly connected with bottom crew department, the rotating shaft assembly 3(that is connected with suspension bracket assembly 1) and decorate assembly 4, pedal body 2 is by rotating shaft assembly 3 and suspension bracket assembly 1 pivot joint, pedal body 2 is connected with crew department's door by decoration assembly 4, and suspension bracket assembly 1 is provided with friction plate 5.Pedal body 2 is built in bottom crew department under normal conditions, rotates to exposing for trampling when crew department's door is opened thereupon; When pedal body 2 is subject to pedal force then contact friction plate 5 down, the friction force that pedal body 2 contacts with friction plate 5 and produces makes pedal body 2 be stopped to stop, now pedal body 2 is in braking state, and such fire fighter can the crew department that comes in and goes out by pedal body 2 safely.
In the present embodiment, as shown in Figures 2 and 3, rotating shaft assembly 3 comprises axle sleeve 34, rotating shaft 31, is arranged at the Compress Spring 32 for jack-up pedal body 2 on rotating shaft 31 top and is sheathed on the single direction thrust ball bearing 33 of rotating shaft 31, the top of single direction thrust ball bearing 33 and the bottom of Compress Spring 32 touch, and rotating shaft 31, Compress Spring 32, single direction thrust ball bearing 33 are all arranged in axle sleeve 34.Pedal body 2 is by rotating shaft 31 and suspension bracket assembly 1 pivot joint, when pedal body 2 is not subject to downward pedal force, Compress Spring 32 is in free state, and when opening crew department's door, single direction thrust ball bearing 33 can make pedal body 2 31 rotations around the shaft in the horizontal direction to certain angle.
As shown in Figure 2 and Figure 4, pedal body 2 comprises panel 21, base plate 22, side plate 23 and connects the screw rod 24 of panel 21 and base plate 22, and side plate 23 is fixedly connected with base plate 22 with panel 21 respectively.Wherein panel 21 and base plate 22 are quadrant, and panel 21 and base plate 22 all offer the corresponding axis hole 211 for sheathed rotating shaft 31 and screw rod 24, and side plate 23 is set to the arc corresponding with this quadrant shape.Screw rod 24 is arranged in rotating shaft 31, and the axis hole 211 of panel 21 is fixed in the upper end of screw rod 24 by screw rod orienting sleeve 25.The outer of panel 21 is provided with friction rubber 6, and friction rubber 6 is set to sheet and its geometric configuration is consistent with the shape of friction plate 5, and friction rubber 6 is adhered to the outer on panel 2 outer and side plate 23 top respectively.
As depicted in figs. 1 and 2, suspension bracket assembly 1 comprises suspension bracket body 11, the baffle assembly 12 be connected with suspension bracket body 11 and the side for reinforcing suspension bracket body 11 and strengthens assembly 13, suspension bracket body 11 is fixedly connected with bottom crew department, baffle assembly 12 is bolted by multiple coaming plate and forms, and friction plate 5 is fixed in baffle assembly 12 by attaching parts 7.
Concrete, axle sleeve 34 and side are strengthened assembly 13 and are fixedly connected with, and side is strengthened assembly 13 and is fixedly connected with suspension bracket body 11.
Concrete, attaching parts 7 is welded in friction plate 5, and attaching parts 7 can adopt bolt to be fixedly connected with baffle assembly 12.
Concrete, friction plate 5 is set to the arc-shaped side consistent with the arcuate shape of the side plate 23 of pedal body 2 towards a side of pedal body 2.
When opening crew department's door, pedal body 2 rotates thereupon and exposes outside bottom crew department, when the panel 21 of pedal body 2 is not subject to downward pedal force, Compress Spring 32 is in free state, panel 21 is positioned at the top of friction plate 5, the friction rubber 6 at panel 21 and panel 21 outer place all can not contact with friction plate 5, and pedal body 2 can rotate freely; When fire fighter sets foot on panel 21, Compress Spring 32 is stressed is made pedal body 2 decline by compression, thus panel 21 and friction rubber 6 are contacted (see Fig. 5 and Fig. 6) with friction plate 5, because friction rubber 6 is made up of elastomeric material, further increase the friction force of pedal body 2 and friction plate 5, thus stop pedal body 2 to continue 31 to rotate around the shaft at once, make pedal body 2 be in braking state, such fire fighter can the crew department that comes in and goes out by pedal body 2 safely;
When fire fighter leaves pedal body 2, Compress Spring 32 returns to free state and by pedal body 2 upwards jack-up, now panel 21 and friction rubber 6 are separated with friction plate 5, thus remove the braking state of pedal body 2.
Compared with prior art, the present invention is by controlling the clutch between friction plate 5 and pedal body 2, achieve pedal body 2 automatically to switch fast at braking state with under removing brake two states along with fire fighter sets foot on and leave pedal body 2 in rotary course, thus ensure that fire fighter can come in and go out crew department fast and safely, under the condition of the narrow and small rescue especially cannot opened completely at crew department's door and rescue at night, effectively avoid fire fighter on fast, the potential safety hazard of falling down during lower pedal body, thus save valuable rescue time, promote rescue speed, realize the Quick rescue task of racing against time.
In the present embodiment, as shown in Figure 7 and Figure 8, decoration assembly 4 comprises decoration panel 41 and decorative interior panel 42, decoration panel 41 is fixedly connected with pedal body 2 by decorative interior panel 42, decorative interior panel 42 is provided with Lamp holder 421, this Lamp holder 421 can install illuminating lamp, to come in and go out crew department to facilitate fire fighter at night.
The top of decoration panel 41 is connected with the bottom of crew department's door by guiding mechanism 43, and when crew department's door is opened, crew department's door drives decoration panel 41 to move by guiding mechanism 43.As shown in Figure 7, guiding mechanism 43 comprises orienting lug 431 and the axis of guide 432, orienting lug 431 is fixed on the bottom of crew department's door and orienting lug 431 offers guide groove 4311, and the top of decoration panel 41 is fixed in one end of the axis of guide 432, and its other end is inserted in guide groove 4311.The rotational steps of the running length of the axis of guide 432 in guide groove 4311 and pedal body 2 adapts.Along with the opening and closing of crew department's door, crew department's door slides along the guide groove 4311 of orienting lug 431 by driving the axis of guide 432, thus drives decoration panel 41 to move, and then drives the rotation of whole pedal body 2.
Concrete, decorative interior panel 42 is provided with limiting stopper 422, when pedal body to open with crew department's door and rotate to an angle time, limiting stopper 422 plays spacing effect.
Concrete, the gap place between decoration panel 41 and decorative interior panel 42 is provided with upholstery border 44, plays effect attractive in appearance.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although done to explain to the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (10)
1. fire extinguishing tanker crew department rotary pedal, comprise pedal body, pedal body is built-in under normal conditions, rotate to exposing for trampling when crew department's door is opened thereupon, it is characterized in that: be provided with the friction plate fixing with crew department's relative position in the below of pedal body motion track, the pedal force that pedal body is subject to down then contacts described friction plate, and pedal body and described friction plate are stopped to pedal body stop along being exposed moving direction friction.
2. fire extinguishing tanker crew department rotary pedal according to claim 1, it is characterized in that: described pedal body is provided with friction rubber, when pedal body be subject to pedal force down then described friction rubber contact described friction plate, pedal body to contact by described friction rubber the friction force produced and pedal body is stopped stop with described friction plate.
3. fire extinguishing tanker crew department rotary pedal according to claim 2, it is characterized in that: fire extinguishing tanker crew department rotary pedal also comprises and the suspension bracket assembly be fixedly connected with bottom crew department and the rotating shaft assembly be connected with described suspension bracket assembly, described pedal body is by described rotating shaft assembly and the pivot joint of described suspension bracket assembly, and described friction plate is fixedly connected with described suspension bracket assembly.
4. fire extinguishing tanker crew department rotary pedal according to claim 3, it is characterized in that: described rotating shaft assembly comprises rotating shaft, is arranged at the elastic component for pedal body described in jack-up on described rotating shaft top and is sheathed on the single direction thrust ball bearing of described rotating shaft, and the top of described single direction thrust ball bearing and the bottom of described elastic component touch.
5. fire extinguishing tanker crew department rotary pedal according to claim 3, it is characterized in that: described pedal body comprises panel, base plate, side plate and connects the screw rod of described panel and base plate, side plate is fixedly connected with described base plate with described panel respectively, described screw rod is arranged in described rotating shaft, and described panel and described base plate all offer the corresponding axis hole for sheathed described rotating shaft and described screw rod.
6. fire extinguishing tanker crew department rotary pedal according to claim 5, is characterized in that: described friction rubber is arranged at described panel.
7. fire extinguishing tanker crew department rotary pedal according to claim 3, it is characterized in that: the baffle assembly that described suspension bracket assembly comprises suspension bracket body and is connected with described suspension bracket body, described suspension bracket body is fixedly connected with bottom described crew department, and described friction plate is fixedly connected on described baffle assembly.
8. fire extinguishing tanker crew department rotary pedal according to claim 7, it is characterized in that: described suspension bracket assembly also comprises side and strengthens assembly, described rotating shaft assembly also comprises the axle sleeve being sheathed on described rotating shaft, and described side is strengthened assembly and is fixedly connected with described axle sleeve with described suspension bracket body respectively.
9. fire extinguishing tanker crew department rotary pedal according to claim 1, it is characterized in that: described crew department rotates ladder and also comprises decoration panel, described decoration panel is fixedly connected with described pedal body, described decoration panel is connected with described crew department's door by guiding mechanism, when crew department's door is opened, described crew department's door drives described decoration panel to move by described guiding mechanism.
10. fire extinguishing tanker crew department rotary pedal according to claim 9, it is characterized in that: described guiding mechanism comprises orienting lug and the axis of guide, orienting lug is fixed on the bottom of described crew department's door and described orienting lug offers guide groove, the top of decoration panel is fixed in one end of the described axis of guide, and its other end is inserted in described guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963386.0A CN105539297B (en) | 2015-12-21 | 2015-12-21 | Fire fighting truck crew department's rotary pedal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963386.0A CN105539297B (en) | 2015-12-21 | 2015-12-21 | Fire fighting truck crew department's rotary pedal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105539297A true CN105539297A (en) | 2016-05-04 |
| CN105539297B CN105539297B (en) | 2017-12-19 |
Family
ID=55819001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510963386.0A Active CN105539297B (en) | 2015-12-21 | 2015-12-21 | Fire fighting truck crew department's rotary pedal |
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| Country | Link |
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| CN (1) | CN105539297B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429855A (en) * | 2016-10-31 | 2017-02-22 | 徐州建机工程机械有限公司 | Tower crane cab with rotating platform |
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| US20100096215A1 (en) * | 2008-10-22 | 2010-04-22 | The Boeing Company | Ladder assembly and associated methods of use |
| US8573673B1 (en) * | 2011-03-08 | 2013-11-05 | Kenneth Lee Puglisi, Sr. | Stake pocket mounting bar for portable step |
| CN203331957U (en) * | 2013-05-27 | 2013-12-11 | 广东永强奥林宝国际消防汽车有限公司 | Overturning built-in pedal for firefighting truck |
| CN203331956U (en) * | 2013-05-27 | 2013-12-11 | 广东永强奥林宝国际消防汽车有限公司 | Fire fighting truck pedal with alarm lamp |
| US20150224936A1 (en) * | 2013-02-22 | 2015-08-13 | Rom Acquisition Corporation | Cargo truck multi-stage extendable personnel platform with foldable guardrail |
| CN205440184U (en) * | 2015-12-21 | 2016-08-10 | 广东永强奥林宝国际消防汽车有限公司 | Rotatory footboard in fire engine passenger room |
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2015
- 2015-12-21 CN CN201510963386.0A patent/CN105539297B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100096215A1 (en) * | 2008-10-22 | 2010-04-22 | The Boeing Company | Ladder assembly and associated methods of use |
| US8573673B1 (en) * | 2011-03-08 | 2013-11-05 | Kenneth Lee Puglisi, Sr. | Stake pocket mounting bar for portable step |
| US20150224936A1 (en) * | 2013-02-22 | 2015-08-13 | Rom Acquisition Corporation | Cargo truck multi-stage extendable personnel platform with foldable guardrail |
| CN203331957U (en) * | 2013-05-27 | 2013-12-11 | 广东永强奥林宝国际消防汽车有限公司 | Overturning built-in pedal for firefighting truck |
| CN203331956U (en) * | 2013-05-27 | 2013-12-11 | 广东永强奥林宝国际消防汽车有限公司 | Fire fighting truck pedal with alarm lamp |
| CN205440184U (en) * | 2015-12-21 | 2016-08-10 | 广东永强奥林宝国际消防汽车有限公司 | Rotatory footboard in fire engine passenger room |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106429855A (en) * | 2016-10-31 | 2017-02-22 | 徐州建机工程机械有限公司 | Tower crane cab with rotating platform |
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| Publication number | Publication date |
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| CN105539297B (en) | 2017-12-19 |
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