CN2399361Y - Elevator construction table - Google Patents
Elevator construction table Download PDFInfo
- Publication number
- CN2399361Y CN2399361Y CN 99255238 CN99255238U CN2399361Y CN 2399361 Y CN2399361 Y CN 2399361Y CN 99255238 CN99255238 CN 99255238 CN 99255238 U CN99255238 U CN 99255238U CN 2399361 Y CN2399361 Y CN 2399361Y
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- brake
- elevator
- construction table
- fixture block
- bed board
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Abstract
The utility model relates to an elevator construction table. The utility model is characterized in that the lower part of a bed board of the construction table is provided with a hoist speed reducing motor which adopt a main steel cable to cause the construction table to generate lifting actions, and the bed board is provided with a brake pedal which is connected with brake connecting rods arranged on the lower part of a vertical beam through steel cables, and furthermore, the brake pedal and the brake connection rods can generate link action through steel cables. The braking connection rods are also connected with brake group through pull rods, and a fall prevention device is arranged on the vertical beam, and furthermore, the top end and the bottom end of the vertical beam are respectively provided with a guide block. Through the upper and the lower guide blocks, the fall prevention device and the brake group are respectively combined with guide rails, the guide blocks can correct the construction table to cause the construction table to lift stably, the fall prevention device can avoid the generation of sudden drawdown accidents of the construction table and the brake group can keep the state of braking.
Description
The utility model provides a kind of Elevator construction table, is at the escalator in various building and design, thus all various buildings etc. with escalator all can adopt, with clean, spray paint, engineering construction such as welding, installation, maintenance.
Used Elevator construction table only depends on the whole Elevator construction table of cable wire independent support of elevator gear motor between traditional elevator, right invar rope often uses, add failure to maintain, making the cable wire fracture of wire but not give when breaking thigh realizes, cause Elevator construction table to be dropped, even lead to the personal casualty tragedy and produce, though the Elevator construction table that uses has installed brake gear additional now, but structure design still is improper, existing Elevator construction table block diagram for example shown in Figure 1 can take place in mis-adventure by chance that caused, beam 11 nearly two ends are respectively established a pull bar 12 that extends up through bed board 13 under this construction platform 1, junction, two pull bars, 12 top spiral shell is consolidated a screw 121 and is welded a fishplate bar 14, sets firmly an elevator gear motor 20 on this fishplate bar 14 again.Hold the brake pedal 15 that is pivoted therein on the pull bar 12, these brake pedal 15 front ends link cable wire 16, and cable wire 16 2 ends link with the fast bar 18 of the brake of vertical beam 17 belows respectively, make cable wire be inverted V-shaped system and hang, and brake connecting rod 18 is held in addition then and linked with brake 19.
Owing to need often to adjust the height of construction platform 1, so that brake group 19 is easy to wear even the inefficacy of skidding allows brake group 19 can't bite guide rail with a side of guide rail; Solely lean on the main cable 21 of elevator gear motor 20 to support whole Elevator construction table 1 again, make the centrostigma of stressed maximum drop on screw 121 places in two pull bar 12 tops, cause screw 121 can't bear this gravity and rupture, cause pedal 15 can't effectively control brake group 19, if this moment, main cable 21 fractures or elevator gear motor 20 did not start, then Elevator construction table 1 promptly can fall down fast, thereby leads to accident, so quite allow the workmen fear at ordinary times in the use.
Secondly, face down bonding is established the angle bar 171 of two face-offs and is formed guide groove outside the vertical beam 17, this guide groove can close with guide rail (not disclosing) rank, to reach the purpose of guiding construction platform 1 lifting, but when construction platform 1 is made lifting action, guide rail can produce with both sides angle bar 17 and rub and the sound that jangles, and rocks more than when the gap between guide groove and the guide rail causes constructing the platform lifting too greatly again.
The purpose of this utility model be realize a kind ofly being convenient to construct, the Elevator construction table of safe in operation, this construction platform can guarantee that the workmen does not have the sorrow of falling, and helps engineering constructions such as the workmen cleans, sprays paint, welding, installation, maintenance.
To achieve these goals, the utility model is taked following design plan: this Elevator construction table, described construction platform comprises a bed board, one is around in the fence on the bed board, one be horizontally set with under bed board on the two crossbeams of beam and array, two directly are located at the vertical beam of bed board down either side, one is horizontally set with beam under two vertical beam lower ends, four are located at the bed board both sides and are connected and lower end and vertical beam bottom bonded assembly diclinic support with two crossbeams the upper end again, and the guide rail that cooperates the left and right sides directly to establish is formed jointly, one suspension is set under bed board, and at suspension internal fixation one elevator gear motor, this elevator gear motor and to just under the bed board central gap side, penetrate for a central main cable; End is provided with brake group and brake connecting rod under two vertical beams, and in the central gap of bed board with the plate brake pedal that is pivoted that hangs down, bind with a cable wire that is inverted V-shaped between brake pedal and two brake connecting rods, when brake pedal is subjected to trampling, promptly produce an interlock effect between the three, and link with a string L shaped pull bar of establishing spring between brake connecting rod and the brake group, the pull bar upper end has the U-shaped piece, in the brake wheel that is pivoted.When pull bar rises, can produce urgent friction by brake wheel and guide rail, and make Elevator construction table reach locking function.
In the utility model, described suspension is to be fixed under the upper beam, be provided with on the underframe of suspension short support with the elevator gear motor under short support secure bond.Make the elevator gear motor be suspended in the suspension.
In the utility model, described suspension is to be fixed on the underbeam, be provided with on the upper frame of suspension short support with the elevator gear motor under short support secure bond.Make the elevator gear motor be supported on the suspension.
In the utility model, described suspension be H shape and be fixed on put the beams in place and underbeam between, be provided with on the crossbearer of centre short support with the elevator gear motor under short support secure bond.Make the elevator gear motor be supported by crossbearer.
In the utility model, flat board is set in the central authorities of described underbeam.Place for welding generator or other heavy industry tool, help staff's construction.
In the utility model, the structure of described brake group is to be combined by a fixture block, cover plate, support plate, spring, pull bar and brake wheel; Fixture block is to be embedded in the guide groove of vertical beam sidewall, and support plate is L-shaped and be fixed on the vertical beam of fixture block below, fixture block has a skewed slot that is used for ccontaining U-shaped piece and brake wheel, and has a valley that is used for ccontaining brake wheel shaft in groove bottom, and cover plate is to be fixed on the fixture block and to be covered with skewed slot, after support plate was passed in the pull bar lower end, the pivot hole of brake connecting rod one end was passed in bending again, and other is combined into a braking linkage device after passing pull bar by a latch.
In the utility model, described on two montants down two ends each fix a guide block, guide block is M shape substantially, the surface is wrapped with a rubber layer.With friction drag and the noise between minimizing and the guide rail, but and correcting elevator bench board.
In the utility model, set up brake on the described elevator gear motor.To prevent that rapid drawdown from producing.
In the utility model, on described two vertical beams, be provided with anti-drop device, it is to be combined by a fixture block, slide plate and brake wheel, this fixture block is fixed on the vertical beam, and have a skewed slot, and slide plate one side has an oblique slotted hole groove, side has a perforation in addition, tiltedly the slotted hole groove is passed by the bolt that is fixed on the fixture block, and perforation is then solid by drag-line system; End has a brake wheel under slide block in addition, and this brake position of wheel is in the skewed slot of fixture block.After slide plate is subjected to the drag-line pulling, influenced and oblique rising by oblique slotted hole groove, and drive the brake wheel rising simultaneously, and then produce urgent friction, and reach locking function with guide rail, produce the rapid drawdown accident to avoid Elevator construction table.
In the utility model, the skewed slot lower end central authorities of described fixture block have the triangle block.Can be used for stopping brake wheel.
The utility model is set up multiple safe anti-drop device especially, has three parallel ropes as Elevator construction table, and three ropes are respectively a central main cable and both sides drag-line, and by past sagging the falling in the elevator room of top layer.
When Elevator construction table is unexpected when gliding rapidly, the slide plate of anti-drop device is risen by the drag-line drawing, causes brake wheel in the fixture block together to rise and is close to guide rail that producing stops ends effect, avoids Elevator construction table to continue to fall downwards.
When Elevator construction table was rest energy, pull bar was influenced by spring force, and together rose with brake connecting rod, produced braking action even if the brake wheel of pull bar upper end is close to guide rail; Otherwise, when brake connecting rod is subjected to external force to exert pressure decline, can pull bar and brake wheel is together drop-down, cause brake wheel no longer to be close to slide rail, promptly do not have braking action, and make Elevator construction table can be dynamic downslide function.
Satisfy when the Elevator construction table lifting because of being wrapped with a rubber layer on the top of vertical beam, the set guide block in bottom, can reduce and guide rail between friction drag and noise, make lifting more smooth and easy steadily simultaneously, unlikely generation is rocked.The elevator gear motor is located under the bed board, can disperse gravity by upper beam or underbeam, makes that whole elevator Working table structure is more firm, brake is installed on the elevator gear motor again also can be helped prevent that rapid drawdown from producing.
The utility model is described in further detail below in conjunction with accompanying drawing
Fig. 1 is the D structure figure of traditional elevator construction platform
Fig. 2 is the D structure figure of the utility model Elevator construction table
Fig. 3 to Figure 11 is the assembling process figure of the utility model Elevator construction table
Figure 12 is the D structure figure of the utility model elevator gear motor
Figure 13 is the utility model guide block and the figure that cooperates of guide rail
Figure 14 is the figure that cooperates of not brake for the utility model anti-drop device and guide rail
Figure 15 is the figure that cooperates that has braked for the utility model anti-drop device with guide rail
Figure 16 is the front view of Figure 14
Figure 17 is the front view of Figure 15
Figure 18 is the three-dimensional exploded view of the utility model brake group and brake connecting rod
Figure 19 is the three-dimensional assembly figure of the utility model brake group and brake connecting rod
Figure 20 is that the utility model brake group and guide rail are the not scheme drawing of brake
Figure 21 is the scheme drawing that has braked for the utility model brake group and guide rail
Figure 22 plants constructional drawing for other of the utility model Elevator construction table
Figure 23 is another constructional drawing of the utility model Elevator construction table
As shown in Figure 2, block diagram for the utility model elevator bench board, disclose a kind of Elevator construction table 3 among the figure and can run through also lifting at the escalator of each floor 2, going up floor most and all the elevator room can be set at escalator, by the elevator room can from top to bottom fall into three ropes be respectively a central main cable 73 and about two drag-lines 81, this main cable 73 can pass behind the breach 321 of Elevator construction table bed board 32 central authorities in the injection elevator gear motor 7 again, when Elevator construction table 3 is desired lifting, make elevator gear motor 7 produce elevator or unclasp action with remote control mode; About two drag-lines 81 then be to be connected with the anti-drop device 6 of elevator bench board both sides vertical beam 36, platform 3 produces the rapid drawdown accidents to avoid constructing; One group of brake group 5 respectively is set below both sides vertical beam 36 and is holding in the mouth guide rail 21 (T shape or L shaped) in addition, and under interlocking pattern, partly to bear the loading that main cable 73 is born.
Main framework of the present utility model and cohesive process can be obtained to understand by Fig. 3 one Figure 11, Figure 3 shows that 35 upper ends of putting the beams in place establish the plate 351 that hangs down, and the brake pedal 352 that is pivoted on the plate that hangs down.
Disclose as Fig. 4, the fixedly telescopic girder 353 of 35 two ends of putting the beams in place, the end of this two telescopic girder is provided with suspended block 354, and put the beams in place 35 with telescopic girder 353 on several hyphen framves 355 are set respectively.
As shown in Figure 5, two vertical beams 36 respectively with aforementioned two suspended blocks, 354 secure bond, the lower end also is provided with the guide block 4 that is M shape on two vertical beams 36, brake connecting rod 37 in addition also is being pivoted in two vertical beams, 36 lower ends, and set firmly a brake group 5 on the brake connecting rod 37, with a pull bar 54 traction interlocks between brake connecting rod and the brake group, in addition, be provided with anti-drop device 6 at the moderate place of two vertical beams 36.In addition brake pedal 352 with about binding mutually with a cable wire 39 between two brake connecting rods 37, and cable wire and be inverted V-shaped and arranging can affect two brake connecting rods, 37 generations, one interactive effect simultaneously when brake pedal 352 is subjected to drops.
As shown in Figure 6, end is horizontally set with a underbeam 38 under aforementioned two vertical beams 36, two sides are respectively equipped with telescopic girder 381 about this underbeam, and telescopic girder is with suspended block 382 and vertical beam 36 secure bond, central authorities at underbeam 38 are provided with a flat board 383 in addition, place for welding generator 9 (shown in Figure 2) or other heavy industry tool, be beneficial to the staff and impose electric welding engineering or other construction operation.
As shown in Figure 7, have four hyphen framves 355, on the hyphen frame, be horizontally set with four groups of long two crossbeams 34 again, and be arrangement in parallel at 35 Liang Tishang such as grade that put the beams in place.
As shown in Figure 8, each is fixing with tilted supporter 33 at two crossbeams 34 two ends on limit, the left and right sides, and tilted supporter 33 bottoms then are fixed on end under the perpendicular frame 36, with two crossbeams 34 of this firm left and right sides.
As shown in Figure 9, fix a bed board 32 on four groups of two crossbeams 34, it is ccontaining for vertical plate 351 and brake pedal 352 to have a breach 321 in the central authorities of bed board.
As shown in figure 10, putting the beams in place is provided with the suspension 31 of a shaped as frame under 35, establishes short support 71 secure bond of a short support 311 and elevator gear motor 7 bottoms on the underframe of suspension, so that elevator gear motor 7 is firmly set up.
As shown in figure 11, the surrounding of bed board 32 encloses with fence 30, advances with the protection staff, and safety is improved; Promptly formed Elevator construction table 3 of the present utility model this moment, when being located at floor 2 escalators, promptly as shown in Figure 2.
As shown in figure 12, be the block diagram of aforementioned elevator gear motor, the top of disclosing elevator gear motor 7 among the figure has cable wire inlet 72, and this inlet can penetrate for central cable wire 73, via interior roll around after discharge by displacer 74 again; In addition in order to make this motor can have brake function, except the brake function of reducing gear own, on brake rod 75, install one group of brake 76 in addition additional, so that when Elevator construction table 3 took place quickly to descend, central cable wire 73 will be immediately by brake 76 lockings, and make Elevator construction table 3 stop no longer rapid drawdown immediately, because this brake 76 is foreign trader's patented products, so non-pattern characteristics, only this outline is not listed this case patent characteristic in.
As shown in figure 13, the constructional drawing of aforementioned guide block 4, this guide block slightly is M shape, one rubber layer 41 is arranged in its skin, after guide block 4 and guide rail 21 mutual ranks are closed, can reduce friction drag and noise between guide block and the guide rail, but and correcting elevator bench board 3, avoid producing and rock, make its lifting more steady.
As shown in figure 14, be anti-drop device and the figure that cooperates of guide rail, this anti-drop device 6 is by a fixture block 61, slide plate 62 and brake wheel 63 combine, fixture block 61 is fixed on the vertical beam 36, and has a skewed slot 611, and a side of slide plate 62 possesses an oblique slotted hole groove 621, side has a perforation 622 in addition, tiltedly the slotted hole groove can pass for the bolt 612 (is good with two bolts) that is fixed on the fixture block 61, perforation can be solid for drag-line 81 then, end has a brake wheel 63 under slide block in addition, and this brake position of wheel is in end under the fixture block skewed slot 611, and stopped by the triangle block 613 of skewed slot lower end; So do not produce full locking function owing to keep suitable spacing between guide rail 21 and the brake wheel 63.
Figure 15 be continue aforementioned shown in Figure 14, when Elevator construction table 3 produces rapid drawdown suddenly, carry on the drag-line 81 and make slide plate 62 oblique risings, relatedly make brake wheel 63 oblique risings, and then make brake wheel 63 and the urgent friction of guide rail 21 generations force Elevator construction table 3 to stop to descend, reach the safe handling effect.
Figure 16, Figure 17 are respectively the front elevations of Figure 14, Figure 15, also are the action scheme drawings, and by understanding the matching relationship of brake wheel 63 with guide rail 21 among two figure, wherein Figure 16 is not braking state, and Figure 17 is braking state.
Figure 18, Figure 19 are respectively the three-dimensional exploded view and the assembly figure of brake group and brake connecting rod, and the structure of this brake group 5 is to be combined by a fixture block 51, cover plate 52, support plate 53, spring 54, pull bar 55 and brake wheel 56; Wherein, fixture block 51 is to be embedded in the guide groove 361 of vertical beam 36 sidewalls, and support plate 53 is L-shaped and be fixed on the vertical beam 36 of fixture block 51 belows, fixture block 51 has a skewed slot 511, has a valley 512 in groove bottom again, and cover plate 52 is to be fixed on the fixture block 51 and to cover skewed slot 511, can ccontaining one brake wheel 56 that is hubbed in the U-shaped piece 551 in skewed slot 511, valley 512 then holds the brake wheel shaft, this U-shaped piece 551 is to be connected pull bar 55 upper ends, and pull bar 55 is L-shaped, long end string is being established spring 54, after short end then passed support plate 53, the pivot hole 371 of brake connecting rod 37 was passed in bending again, and passed pull bar 55 and secure bond becomes a braking linkage device by a latch 57; The end in addition of brake connecting rod 37 has perforation 372 for binding the usefulness of cable wire 39 again.
Figure 20, Figure 21 are respectively the action relationships figure of aforementioned anti-drop device 6 and brake group 5, for ease of expression, the cover plate on the fixture block 51 52 is removed, enforcement situation of the present utility model can obtain further understanding by Fig. 2, Figure 20 earlier, when the staff does not trample brake pedal 352, pull bar 55 is influenced by the elastic force expansion of spring 54 and rises, and makes the brake wheel 56 of upper end and guide rail 21 produce braking action, and makes Elevator construction table 3 produce locking function.Otherwise, as shown in figure 21, when the staff depresses brake pedal 352, by cable wire 39 pulling brake connecting rods 37, and brake connecting rod 37 forces pull bar 55 to descend, and then brake wheel 56 is separated with guide rail 21, no longer produces braking action, and at this moment make elevator gear motor 3 produce elevator or unclasp main cable 73 with remote control mode, and make Elevator construction table 3 produce lifting action.
If brake failure at this moment can be by the brake 76 generation emergency brake effects of anti-drop device 6 with elevator gear motor 7, rapid drawdown is unexpected to produce to avoid.Therefore enforcement of the present utility model is safe, and structure is also firm especially.
Figure 22 for of the present utility model other plant constructional drawing, this figure is setting up of suspension 31 with Figure 10 difference, this suspension 31 is to be fixed on the underbeam 38, on the upper frame of suspension, establish short support 71 secure bond of a short support 311 and elevator gear motor 7 bottoms, advance so that elevator gear motor 7 is firmly set up.Because elevator gear motor 7 all is located at bed board 32 times with welding generator 9, so the bed board activity space is strengthened, allows the staff that bigger working space is arranged.
Figure 23 also be of the present utility model other plant constructional drawing, being in suspension 31 that this figure is different with Figure 10 is to be made into H shape, the upper end is and puts the beams in place 35 fixingly that the lower end is fixing with underbeam 38, and middle crossbearer then is provided with short support 71 secure bond of short support 311 and elevator gear motor 7 bottoms.
The utility model has the advantages that:
1. have anti-drop device, add that the brake function of the deceleration of elevator gear motor itself and brake can be true Protect the construction platform and do not have the sorrow of falling.
2. guide block is because being wrapped with rubber layer, thus can go out frictional resistance and noise between few guide block and the guide rail, and can lead Positive lift boy makes platform, makes its lifting more steady, and unlikely generation is acutely rocked.
3. on underbeam, can put electric welding machine, can be convenient to the staff and be engaged in welding job.
4 to put the beams in place or underbeam comes suspension elevator gear motor, can disperse gravity, so that whole Elevator construction table is heavy Power does not concentrate on a bit, and makes structure more firm.
5 because elevator gear motor and electric welding machine all are located under the bed board, so the bed board space is strengthened, allow the staff that bigger work and activity space are arranged
Form an interlink function between the pull bar of 6 brake pedals and connecting rod and brake, not stressed at brake pedal Lower, can end by the brake automatic brake, and make the unlikely whereabouts of Elevator construction table.
Claims (10)
1, a kind of Elevator construction table, described construction platform comprises a bed board, one is around in the fence on the bed board, one be horizontally set with under bed board on the two crossbeams of beam and array, two directly are located at the vertical beam of bed board down either side, one is horizontally set with beam under two vertical beam lower ends, four are located at the bed board both sides and are connected and lower end and vertical beam bottom bonded assembly diclinic support with two crossbeams the upper end again, and the guide rail that cooperates the left and right sides directly to establish is formed jointly, it is characterized in that: a suspension is set under bed board, and at suspension internal fixation one elevator gear motor, this elevator gear motor and to just under the bed board central gap side, penetrate for a central main cable; End is provided with brake group and brake connecting rod under two vertical beams, and in the central gap of bed board with the plate brake pedal that is pivoted that hangs down, bind with a cable wire that is inverted V-shaped between brake pedal and two brake connecting rods, and link with a string L shaped pull bar of establishing spring between brake connecting rod and the brake group, pull bar upper end has the U-shaped piece, in the brake wheel that is pivoted.
2, Elevator construction table according to claim 1 is characterized in that: described suspension is to be fixed under the upper beam, be provided with on the underframe of suspension short support with the elevator gear motor under short support secure bond.
3, Elevator construction table according to claim 1 is characterized in that: described suspension is to be fixed on the underbeam, be provided with on the upper frame of suspension short support with the elevator gear motor under short support secure bond.
4, Elevator construction table according to claim 1 is characterized in that: described suspension be H shape and be fixed on put the beams in place and underbeam between, be provided with on the crossbearer of centre short support with the elevator gear motor under short support secure bond.
5, according to claim 1 or 2 or 3 or 4 described Elevator construction tables, it is characterized in that: the central authorities at described underbeam are provided with flat board.
6, Elevator construction table according to claim 1 is characterized in that: the structure of described brake group is to be combined by a fixture block, cover plate, support plate, spring, pull bar and brake wheel; Fixture block is to be embedded in the guide groove of vertical beam sidewall, and support plate is L-shaped and be fixed on the vertical beam of fixture block below, fixture block has a skewed slot that is used for ccontaining U-shaped piece and brake wheel, and has a valley that is used for ccontaining brake wheel shaft in groove bottom, and cover plate is to be fixed on the fixture block and to be covered with skewed slot, after support plate was passed in the pull bar lower end, the pivot hole of brake connecting rod one end was passed in bending again, and other is combined into a braking linkage device after passing pull bar by a latch.
7, Elevator construction table according to claim 1 is characterized in that: described on two montants down two ends each fix a guide block, guide block is M shape substantially, the surface is wrapped with a rubber layer.
8, Elevator construction table according to claim 1 is characterized in that: set up brake on the described elevator gear motor.
9, Elevator construction table according to claim 1, it is characterized in that: on described two vertical beams, be provided with anti-drop device, it is to be combined by a fixture block, slide plate and brake wheel, this fixture block is fixed on the vertical beam, and have a skewed slot, and slide plate one side has an oblique slotted hole groove, side has a perforation in addition, tiltedly the slotted hole groove is passed by the bolt that is fixed on the fixture block, and perforation is then solid by drag-line system; End has a brake wheel under slide block in addition, and this brake position of wheel is in the skewed slot of fixture block.
10, Elevator construction table according to claim 9 is characterized in that: the skewed slot lower end central authorities of described fixture block have the triangle block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99255238 CN2399361Y (en) | 1999-11-26 | 1999-11-26 | Elevator construction table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99255238 CN2399361Y (en) | 1999-11-26 | 1999-11-26 | Elevator construction table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2399361Y true CN2399361Y (en) | 2000-10-04 |
Family
ID=34038645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99255238 Expired - Fee Related CN2399361Y (en) | 1999-11-26 | 1999-11-26 | Elevator construction table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2399361Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111232799B (en) * | 2020-01-10 | 2021-11-26 | 日立电梯（中国）有限公司 | Mobile operation platform traction system and machine room-free elevator construction method using same |
| CN114214963A (en) * | 2022-01-21 | 2022-03-22 | 中铁二十局集团第四工程有限公司 | Railway bridge arch rib erects and uses anti-skidding device that falls |
-
1999
- 1999-11-26 CN CN 99255238 patent/CN2399361Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111232799B (en) * | 2020-01-10 | 2021-11-26 | 日立电梯（中国）有限公司 | Mobile operation platform traction system and machine room-free elevator construction method using same |
| CN114214963A (en) * | 2022-01-21 | 2022-03-22 | 中铁二十局集团第四工程有限公司 | Railway bridge arch rib erects and uses anti-skidding device that falls |
| CN114214963B (en) * | 2022-01-21 | 2024-10-01 | 中铁二十局集团第四工程有限公司 | Anti-slip device for erecting railway bridge arch rib |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |