CN103466411B - The two roller devices of elevator and there is its elevator - Google Patents
The two roller devices of elevator and there is its elevator Download PDFInfo
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- CN103466411B CN103466411B CN201310412336.4A CN201310412336A CN103466411B CN 103466411 B CN103466411 B CN 103466411B CN 201310412336 A CN201310412336 A CN 201310412336A CN 103466411 B CN103466411 B CN 103466411B
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Abstract
The invention provides the two roller devices of a kind of elevator and there is its elevator.Wherein the two roller devices of elevator comprises: central part (30), is fixed on the cage column (10) of elevator; And turning rolls (40), the axis direction around central part (30) is set on central part (30) rotationally; Central part (30) has two stopper sections arranged along its axis direction, and turning rolls (40) between two stopper sections, and forms free-running fit with two stopper sections.Technical scheme of the present invention can extend the service life of bearing.
Description
Technical field
The present invention relates to construction machinery and equipment, in particular to the two roller devices of a kind of elevator and the elevator with it.
Background technology
Elevator is used for vertically hanging loading material or personnel, and generally comprise cage and guide rail bracket, cage is moved along guide rail bracket by roller, realizes vertically hanging carrying function.As shown in Figure 1, the cage column 10 ' of cage is fixedly connected with two roller devices, and two roller devices can do vertical motion along guide rail bracket 20 ', thus drives cage perpendicular movement.
Two roller devices comprises turning rolls 40 ', tie bolt 31 ' and two roller assemblies 50 ', wherein tie bolt 31 ' is through the middle part of turning rolls 40 ', again through after axle sleeve 32 ', with nut 30 ', axle sleeve 32 ' is fastened on cage column 10 ', axle sleeve 32 ' and turning rolls 40 ' are free-running fit, and turning rolls 40 ' can be rotated around the axis direction of axle sleeve 32 '.A roller assembly 50 ' is respectively installed at the two ends of turning rolls 40 ', each roller assembly 50 ' comprises bolt of rear end plate 51 ', eccentric shaft 52 ', bearing 53 ' and roller 54 ', wherein bolt of rear end plate 51 ' is located on turning rolls 40 ', eccentric shaft 52 ' is screwed onto on bolt of rear end plate 51 ', bearing 53 ' is set on eccentric shaft 52 ', and roller 54 ' is set on bearing 53 ', and roller 54 ' contacts with guide rail bracket 20 ', and along guide rail bracket 20 ' friction of rolling, up-and-down movement.Eccentric shaft 52 ' can realize ± adjustment of 4 millimeters, be fastened on turning rolls 40 ' with bolt of rear end plate 51 ' after adjusting.
Because guide rail bracket 20 ' exists error in welding process, in order to overcome the impact that error causes, roller 54 ' needs axial movement space, to be embodied between eccentric shaft 52 ' and bearing 53 ' as free-running fit, makes roller 54 ' can end float misalignment 5 millimeters.But this end float misalignment can cause the bearing 53 ' lost of life, so that a whole set of two roller devices is frequently damaged.
Summary of the invention
The present invention aims to provide the two roller devices of a kind of elevator and has its elevator, can extend the service life of bearing.
To achieve these goals, according to an aspect of the present invention, provide the two roller devices of a kind of elevator, comprising: central part, be fixed on the cage column of elevator; And turning rolls, the axis direction around central part is set on central part rotationally; Central part has two stopper sections arranged along its axis direction, and turning rolls between two stopper sections, and forms free-running fit with two stopper sections.
Further, central part has circumferential recess, and two relative sidewalls of circumferential recess form two stopper sections, and turning rolls is embedded in circumferential recess.
Further, central part comprises: the first axle, is fixed on cage column; And second axle, be removably connected with the first axle, between the second axle and the first axle, form circumferential recess.
Further, the first axle comprises: anchor shaft, is fixed on cage column, and is removably connected with the second axle; And axle sleeve, be set on anchor shaft, and be connected between the second axle and cage column, between axle sleeve and the second axle, form circumferential recess.
Further, axle sleeve has the first flange, and the second axle has the second flange, and the first flange and the second flange are oppositely arranged two sidewalls as circumferential recess.
Further, anchor shaft and the second axle are screwed onto on tie bolt respectively; Anchor shaft is the first eccentric shaft, has eccentric orfice; Second axle is the second eccentric shaft, has eccentric boss, and eccentric boss is embedded in eccentric orfice.
Further, be provided with nylon sleeve in circumferential recess, nylon sleeve comprises and is set in the first nylon sleeve on axle sleeve and sheathed the second nylon sleeve on the second mandrel, nylon sleeve and turning rolls free-running fit.
Further, central part also comprises: bent plate, is fixed on cage column; And fixing chuck plate, to be set in regularly on anchor shaft and to be fixedly connected with bent plate.
Further, fixing chuck plate has endoporus, and the internal perisporium of endoporus has the first spacing plane, and anchor shaft is embedded in endoporus, and the periphery wall of anchor shaft has the second corresponding spacing plane of plane spacing with first.
Further, turning rolls comprises two support plates be oppositely arranged, and two support plates are set on central part rotationally around the axis direction of central part respectively; The two roller devices of elevator also comprises two roller assemblies, and two roller assemblies lay respectively at the relative both sides of central part, and each roller assembly in two roller assemblies is arranged between two support plates.
Further, roller assembly comprises: bolt of rear end plate, is located on turning rolls regularly; Wheel shaft, is screwed onto on bolt of rear end plate; Bearing, to be set on wheel shaft and with wheel shaft transition fit; And roller, be set on bearing.
Further, the end sleeve of bolt of rear end plate is provided with circular nut and stop washer.
According to a further aspect in the invention, provide a kind of elevator, comprise the two roller devices of elevator, the two roller devices of elevator is the two roller devices of aforesaid elevator.
Apply technical scheme of the present invention, turning rolls is installed on cage column by central part, roller assembly is arranged on turning rolls, by forming free-running fit between central part and turning rolls, make turning rolls can the axis direction play in centrally portion, thus drive the roller end float misalignment in roller assembly, to meet operating needs, technical scheme of the present invention, free-running fit between prior art centre bearer and roller is transferred between central part and turning rolls, under the prerequisite can guaranteeing the end float misalignment needs meeting roller, make between bearing with roller coordinate more reasonable, extend the service life of bearing.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram according to the two roller devices of the elevator of prior art;
Fig. 2 shows the schematic diagram of the two roller devices of elevator according to an embodiment of the invention;
Fig. 3 shows the A place enlarged drawing according to Fig. 2;
Fig. 4 shows the B place enlarged drawing according to Fig. 2;
Fig. 5 shows the schematic diagram of the axle sleeve of the two roller devices of elevator according to an embodiment of the invention;
Fig. 6 shows the schematic diagram of the anchor shaft of the two roller devices of elevator according to an embodiment of the invention;
Fig. 7 shows according to the C-C of Fig. 6 to cutaway view;
Fig. 8 shows the schematic diagram of the second axle of the two roller devices of elevator according to an embodiment of the invention;
Fig. 9 shows according to the D-D of Fig. 8 to cutaway view;
Figure 10 shows the right elevation according to Fig. 8.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Fig. 2 to Figure 10, according to embodiments of the invention, provide the two roller devices of a kind of elevator, comprise central part 30, turning rolls 40 and roller assembly 50.In conjunction with see Fig. 2, central part 30 is fixed on the cage column 10 of elevator as centre of gration, turning rolls 40 is set on central part 30, and can rotate around the axis direction of central part 30, roller assembly 50 has two, two roller assemblies 50 lay respectively at the relative both sides of central part 30, and each roller assembly 50 is separately positioned on turning rolls 40.Central part 30 has two stopper sections, the axis direction in centrally portion 30, two stopper sections is positioned opposite, turning rolls 40 is between two stopper sections, form axial stop with two stopper sections to coordinate, and turning rolls 40 and two stopper sections are free-running fit, make turning rolls 40 can produce end float misalignment between two stopper sections, play distance is X, to meet the requirement that roller assembly 50 needs axial movement space.
In elevator, the actuating unit that it has drives elevator and the two roller devices of elevator by roller assembly 50 along guide rail bracket dipping and heaving, guide rail bracket is formed by multiple welding for steel structure, error in welding process can cause roller assembly 50 cannot keep fitting with guide rail bracket, so, in order to overcome this problem, generally can require that roller assembly 50 has certain axial movement space.In prior art, the axial movement space of roller assembly 50 is generally realized by the free-running fit between the wheel shaft in roller assembly 50 and bearing, but free-running fit causes bearing life to shorten, so that a whole set of roller assembly 50 damages frequently.Axial fit clearance between wheel shaft and bearing is transferred between central part 30 and turning rolls 40 by the present invention, both the requirement that roller assembly 50 needs axial movement space can have been met, make again between bearing with roller coordinate more reasonable, bearing can not be caused to sustain damage, extend the service life of bearing.
The mode that central part 30 is formed stopper section has a lot, preferably, circumferential recess is offered in the periphery of central part 30, the sidewall that two of axial notch are relative just defines two stopper sections, turning rolls 40 is embedded in axial notch, makes free-running fit between sidewall that turning rolls 40 is relative with two of axial notch.
Certainly, stopper section also can be the projection being arranged on central part 30 periphery, and turning rolls 40 is clipped between two projections, also can form free-running fit structure.
In conjunction with see Fig. 3, central part 30 comprises the first axle 31 and the second axle 32, wherein the first axle 31 is fixed on cage column 10, tie bolt 33 is equipped with between first axle 31 and the second axle 32, first axle 31 and the second axle 32 removably link together by tie bolt 33, between the periphery of the first axle 31 and the periphery of the second axle 32, define aforesaid circumferential recess.Turning rolls 40 can conveniently be arranged in circumferential recess by this detouchable structure.
Preferably, form eccentric cooperation between the first axle 31 with the second axle 32, can prevent the second axle 32 from tie bolt 33, producing axial motion, exit the endoporus of turning rolls 40.
In the present embodiment, first axle 31 comprises anchor shaft 38 and axle sleeve 39, wherein anchor shaft 38 is fixed on cage column 10, linked together by tie bolt 33 and the second axle 32, and with form eccentric cooperation between the second axle 32, axle sleeve 39 is set on anchor shaft 38, and is connected between cage column 10 and the second axle 32, axle sleeve 39 is fixedly installed relative to anchor shaft 38, between axle sleeve 39 and the second axle 32, forms aforesaid circumferential recess.First axle 31 can conveniently be fixed on cage column 10 by the demountable structure between axle sleeve 39 and anchor shaft 38, and convenient forms circumferential recess with coordinating between the second axle 32.
Particularly, in conjunction with see Fig. 5, axle sleeve 39 comprises the first diameter segment 392, has the first flange 391 at the first end of the first diameter segment 392, on the cross section of axle sleeve 39, forms L shape structure between the first flange 391 and the outer peripheral face of the first diameter segment 392; In conjunction with see Fig. 6 and Fig. 7, anchor shaft 38 comprises catching step 383 and eccentric orfice 381, makes anchor shaft 38 form the first eccentric shaft; In conjunction with see Fig. 8 to Figure 10, second axle 32 comprises Second bobbin diameter section 323, the first end of Second bobbin diameter section 323 has the second flange 322, second end of Second bobbin diameter section 323 has eccentric boss 321, the second axle is made to form the second eccentric shaft, and on the cross section of the second axle 32, between the outer peripheral face of Second bobbin diameter section 323 and the second flange 322, form another L shape structure.
Anchor shaft 38 is located in the endoporus of cage column 10, its catching step 383 is stuck on the first side of cage column 10, counter stopper is formed with the first side of cage column 10, the eccentric boss 321 of the second axle 32 is embedded in the eccentric orfice 381 of anchor shaft 38, axle sleeve 39 is connected between second side (and the first side is oppositely arranged) of cage column 10 and the second end end face of Second bobbin diameter section 323, the L shape structure of axle sleeve 39 and the L shape structure of the second axle 32 are oppositely arranged and abut, define aforesaid circumferential recess, first flange 391 and the second flange 322 are respectively as two sidewalls be oppositely arranged of circumferential recess, and form free-running fit between turning rolls 40.
Owing to forming eccentric cooperation, the second axle 32 forms interlocking effect with anchor shaft 38, and the second axle 32 cannot exit from the endoporus of turning rolls 40, adds the reliability of device.
Preferably, nylon sleeve 34 is provided with in circumferential recess, nylon sleeve 34 comprises the first nylon sleeve 341 be set in the L shape structure of axle sleeve 39 and the second nylon sleeve 342 be set in the L shape structure of the second axle 32, first nylon sleeve 341 and the second nylon sleeve 342 respectively with turning rolls 40 free-running fit, meet the axial movement space requirement of roller assembly 50.
Preferably, backing plate and packing ring has been abutted between the catching step 383 of anchor shaft 38 and the first side of cage column 10, the axial pre tightening force between anchor shaft 38 and cage column 10 can be increased, prevent from, between anchor shaft 38 and cage column 10, relative motion occurs.
In conjunction with see Fig. 2, anchor shaft 38 is fixed on cage column 10 by fixing chuck plate 35, particularly, cage column 10 is fixed with bent plate 36, on anchor shaft 38, fixed cover is provided with fixing chuck plate 35, is fixedly connected with between fixing chuck plate 35 with bent plate 36 by binding bolt 37.Fixing chuck plate 35 is the zigzag structure of bending, can adapt, and total is easy to dismounting with the shape of cage column 10.
Certainly, also can not arrange bent plate 36 here, but be bent downwards in the bottom fold portion 11 of cage column 10, this bending part 11 also can be fixedly connected with by binding bolt 37 with fixing chuck plate 35.
Fixing chuck plate 35 is lock barrier together with the second axle 32 adds with the locking effect of anchor shaft 38, prevents anchor shaft 38 from coming off further, increases the reliability of device.
Preferably, fixing chuck plate 35 have multiple for the bolt hole wearing binding bolt 37, when assembling, any one that can make in multiple bolts hole of the bolt hole of bent plate 36 and fixing chuck plate 35 as required aligns, and makes the installation of fixing chuck plate 35 more accurate.
Preferably, the inner hole section profile of fixing chuck plate 35 is hexagon, the cross section profile that anchor shaft 38 is embedded the part axis body in fixing chuck plate 35 endoporus is also hexagon, can prevent anchor shaft 38 from rotating in the endoporus of fixing chuck plate 35, make anchor shaft 38 relative with cage column 10 fixing.
Certainly, here the inner hole section profile of fixing chuck plate 35 and the cross section profile of anchor shaft 38 are not limited to hexagon, as long as guarantee that the internal perisporium of fixing chuck plate 35 has at least one first spacing plane, the periphery wall of anchor shaft 38 has the second corresponding spacing plane 382, make to form counter stopper between the first spacing plane and the second spacing plane 382, fixing chuck plate 35 just can be made relative with anchor shaft 38 fixing.
In conjunction with participation Fig. 2, turning rolls 40 comprises two support plates be oppositely arranged, 41, two support plates 41 and is set in respectively on nylon sleeve 34, and can rotate around the axis direction of central part 30, and roller assembly 50 is connected between two support plates 41.Two support plates 41 form bi-lateral support to each roller assembly 50, support compared to existing one-sided support plate, stressed more reasonable, improve the stability of the cantilever design of turning rolls 40, extend service life.
In conjunction with see Fig. 4, roller assembly 50 comprises bolt of rear end plate 51, wheel shaft 52, bearing 53 and roller 54, wherein bolt of rear end plate 51 is located on two support plates 41, located by circular nut 55 and stop washer 56 in the end of bolt of rear end plate 51, wheel shaft 52 is screwed onto on the periphery wall of bolt of rear end plate 51, and between two support plates 41, bearing 53 to be set on wheel shaft 52 and with wheel shaft 52 transition fit, roller 54 is set on bearing 53 rotationally.The problem of the stressed inclination of roller 54, skew and bolt of rear end plate 51 loose or dislocation effectively can be solved by circular nut 55 and stop washer 56, bearing 53 changes to transition fit with coordinating of wheel shaft 52 by original free-running fit, make bearing 53 more reasonable with the tolerance clearance of wheel shaft 52, extend the service life of bearing 53 greatly.
Present invention also offers a kind of elevator, comprise the two roller devices of elevator, the two roller devices of this elevator is the two roller devices of aforesaid elevator.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
1, bearing and the more desirable tolerance clearance of wheel shaft, extend the service life of bearing greatly; And axial adjustable shifting amount has been designed into two eccentric shaft places in the middle of turning rolls, also meet the function that roller assembly need have the gap of end float misalignment simultaneously.
2, the mode that two support plates of turning rolls form the circular nut of the support type design of bilaterals and uniqueness, stop washer tightens up, actv. solves the problem of roller stress inclination, skew, bolt of rear end plate loose or dislocation, the wheel shaft both-end of roller supports, stress point rationally decomposes, and solves the problem that cantilever support is unstable, the life-span is short of turning rolls.
3, by two eccentric shaft places in the middle of adjustable eccentric change in design to a whole set of wheel carrier, adopt the design of the double-eccentric shaft interlocking of two eccentric shafts, make adjustable eccentric with the function of interlocking, the fixing chuck plate of outer end can turn increase one locking barrier for the locking mode after eccentric shaft adjustment.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the two roller devices of elevator, comprising:
Central part (30), is fixed on the cage column (10) of elevator; And
Turning rolls (40), the axis direction around described central part (30) is set on described central part (30) rotationally;
It is characterized in that, described central part (30) has two stopper sections arranged along its axis direction, and described turning rolls (40) between described two stopper sections, and forms free-running fit with described two stopper sections;
Described central part (30) has circumferential recess, and two relative sidewalls of described circumferential recess form described two stopper sections, and described turning rolls (40) is embedded in described circumferential recess;
Described central part (30) comprising:
First axle (31), is fixed on described cage column (10); And
Second axle (32), is removably connected with described first axle (31), forms described circumferential recess between described second axle (32) and described first axle (31);
Described first axle (31) comprising:
Anchor shaft (38), is fixed on described cage column (10), and is removably connected with described second axle (32); And
Axle sleeve (39), be set on described anchor shaft (38), and be connected between described second axle (32) and described cage column (10), form described circumferential recess between described axle sleeve (39) and described second axle (32).
2. the two roller devices of elevator according to claim 1, it is characterized in that, described axle sleeve (39) has the first flange (391), described second axle (32) has the second flange (322), and described first flange (391) and described second flange (322) are oppositely arranged described two sidewalls as described circumferential recess.
3. the two roller devices of elevator according to claim 1, is characterized in that,
Described anchor shaft (38) and described second axle (32) are screwed onto on tie bolt (33) respectively;
Described anchor shaft (38) is the first eccentric shaft, has eccentric orfice (381);
Described second axle (32) is the second eccentric shaft, has eccentric boss (321), and described eccentric boss (321) is embedded in described eccentric orfice (381).
4. the two roller devices of elevator according to claim 1, it is characterized in that, nylon sleeve (34) is provided with in described circumferential recess, described nylon sleeve (34) comprises the first nylon sleeve (341) be set on described axle sleeve (39) and the second nylon sleeve (342) be set on described second axle (32), described nylon sleeve (34) and described turning rolls (40) free-running fit.
5. the two roller devices of elevator according to claim 1, it is characterized in that, described central part (30) also comprises:
Bent plate (36), is fixed on described cage column (10); And
Fixing chuck plate (35), is set in described anchor shaft (38) regularly and goes up and be fixedly connected with described bent plate (36).
6. the two roller devices of elevator according to claim 5, it is characterized in that, described fixing chuck plate (35) has endoporus, the internal perisporium of described endoporus has the first spacing plane, described anchor shaft (38) is embedded in described endoporus, and the periphery wall of described anchor shaft (38) has the second spacing plane (382) corresponding with described first spacing plane.
7. the two roller devices of elevator according to any one of claim 1 to 6, is characterized in that,
Described turning rolls (40) comprises two support plates (41) be oppositely arranged, and described two support plates (41) are set on described central part (30) around the axis direction of described central part (30) respectively rotationally;
The two roller devices of described elevator also comprises two roller assemblies (50), described two roller assemblies (50) lay respectively at the relative both sides of described central part (30), and each roller assembly (50) in described two roller assemblies (50) is arranged between described two support plates (41).
8. the two roller devices of elevator according to claim 7, it is characterized in that, described roller assembly (50) comprising:
Bolt of rear end plate (51), is located on described turning rolls (40) regularly;
Wheel shaft (52), is screwed onto on described bolt of rear end plate (51);
Bearing (53), be set in described wheel shaft (52) upper and with described wheel shaft (52) transition fit; And
Roller (54), is set on described bearing (53).
9. the two roller devices of elevator according to claim 8, is characterized in that, the end sleeve of described bolt of rear end plate (51) is provided with circular nut (55) and stop washer (56).
10. an elevator, comprises the two roller devices of elevator, it is characterized in that, the two roller devices of the elevator of the two roller devices of described elevator according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412336.4A CN103466411B (en) | 2013-09-11 | 2013-09-11 | The two roller devices of elevator and there is its elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310412336.4A CN103466411B (en) | 2013-09-11 | 2013-09-11 | The two roller devices of elevator and there is its elevator |
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| Publication Number | Publication Date |
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| CN103466411A CN103466411A (en) | 2013-12-25 |
| CN103466411B true CN103466411B (en) | 2016-03-30 |
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| CN201310412336.4A Active CN103466411B (en) | 2013-09-11 | 2013-09-11 | The two roller devices of elevator and there is its elevator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106429717A (en) * | 2016-08-24 | 2017-02-22 | 无锡科通工程机械制造有限公司 | Double-guiding-wheel structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1169627B (en) * | 1958-03-21 | 1964-05-06 | Maerkische Steinkohlengewerksc | Roller guide for the conveyor basket or the conveyor vessel of a shaft conveyor |
| DE1215321B (en) * | 1958-09-12 | 1966-04-28 | Maerkische Steinkohlengewerksc | Roller guide for the conveyor basket or the conveyor vessel of a shaft conveyor |
| JP2619263B2 (en) * | 1988-06-09 | 1997-06-11 | 日本オーチス・エレベータ株式会社 | Hydraulic elevator guide device |
| CN202575634U (en) * | 2012-04-28 | 2012-12-05 | 广州市京龙工程机械有限公司 | High-capacity high-speed single-column construction hoist |
| CN202953657U (en) * | 2012-12-07 | 2013-05-29 | 中联重科股份有限公司 | Drop-preventing roller wheel assembly and building hoist |
| CN202953656U (en) * | 2012-11-29 | 2013-05-29 | 广州市京龙工程机械有限公司 | Idler wheel falling prevention device for construction elevator |
-
2013
- 2013-09-11 CN CN201310412336.4A patent/CN103466411B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1169627B (en) * | 1958-03-21 | 1964-05-06 | Maerkische Steinkohlengewerksc | Roller guide for the conveyor basket or the conveyor vessel of a shaft conveyor |
| DE1215321B (en) * | 1958-09-12 | 1966-04-28 | Maerkische Steinkohlengewerksc | Roller guide for the conveyor basket or the conveyor vessel of a shaft conveyor |
| JP2619263B2 (en) * | 1988-06-09 | 1997-06-11 | 日本オーチス・エレベータ株式会社 | Hydraulic elevator guide device |
| CN202575634U (en) * | 2012-04-28 | 2012-12-05 | 广州市京龙工程机械有限公司 | High-capacity high-speed single-column construction hoist |
| CN202953656U (en) * | 2012-11-29 | 2013-05-29 | 广州市京龙工程机械有限公司 | Idler wheel falling prevention device for construction elevator |
| CN202953657U (en) * | 2012-12-07 | 2013-05-29 | 中联重科股份有限公司 | Drop-preventing roller wheel assembly and building hoist |
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Application publication date: 20131225 Assignee: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY DEVELOPMENT Co.,Ltd. WEINAN BRANCH Assignor: ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY Co.,Ltd. Contract record no.: X2023980042749 Denomination of invention: Elevator double roller device and elevator with it Granted publication date: 20160330 License type: Common License Record date: 20231008 Application publication date: 20131225 Assignee: Zoomlion Construction Crane Co.,Ltd. Assignor: ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY Co.,Ltd. Contract record no.: X2023980042704 Denomination of invention: Elevator double roller device and elevator with it Granted publication date: 20160330 License type: Common License Record date: 20231008 |
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| EE01 | Entry into force of recordation of patent licensing contract |