CN1292819C

CN1292819C - Chain type stage lifting device

Info

Publication number: CN1292819C
Application number: CNB2004100263465A
Authority: CN
Inventors: 魏发孔
Original assignee: Lanzhou University of Technology
Current assignee: Lanzhou University of Technology
Priority date: 2004-07-17
Filing date: 2004-07-17
Publication date: 2007-01-03
Anticipated expiration: 2024-07-17
Also published as: CN1597034A

Abstract

The present invention relates to a chain type stage lifting device, particularly to the lifting device of a lifting stage of a theater. A speed reduction braking motor set (1) symmetrically outputs dynamic force towards both sides, and the dynamic force is transmitted to a speed reduction machine set (5) through a transmission earth axis set (2). The present invention is characterized in that the speed reduction machine set (5) is respectively transmitted to a chain type rack and gear set (6) through a low speed transmission axis set (9); the rack and gear set (6) comprises a gear (6.4), a push-pull rack (6.1) and a back gear set (6.3), wherein the push-pull rack (6.1) generates the dynamic force for topping an upper platform surface beam (8); guiding column sets (7) are arranged on four symmetrical positions of a lifting platform and adopt a progressive pumping and pull structure; a connecting plate (7.7) is fixedly connected with one head an H-shaped upright column (7.6) and has a structure fixedly connected with an upper platform surface beam set (8); the H-shaped upright column (7.6) is sheathed in a five-level rectangular sleeve barrel (7.5); all levels of rectangular sleeve barrels (7.4), (7.3) and (7.2) are successively embedded into a base rectangular sleeve barrel (7.1).

Description

Stage chain type lifting device

Technical field

The present invention relates to the lowering or hoisting gear of arenas elevator stage.

Background technology

At present, the lifting structures in the lifting lifting platform structure of known arenas lifting orchestra or elevator stage and other occasion has the king bolt lifting structures of screw-and-nut formula, chain hoisting type, rope hoisting formula, oil cylinder straight top type, bridging jack-up formula and Canadian GALA company and rigid chain lifting structures of French SERAPID company or the like.Above structure is used for the different lifting platform liftings that require of different occasions and all has separately characteristics.Except that back two kinds, aforementioned each structure all has the equipment self excessive height, takies the dark shortcoming of foundation ditch, installs under certain condition, uses and be restricted.The two kinds of structures in back have overcome aforesaid drawbacks, but its vital part complex structure, make difficulty, cost is very high.

Summary of the invention

The objective of the invention is to reduce the height of arenas elevator stage jacking equipment, reduce to take the degree of depth of foundation ditch, and simplified structure, be convenient to make.

The present invention is a stage chain type lifting device, retarding braking group of motors (1) symmetry is to the both sides outputting power, reach deceleration unit (5) by transmission earth's axis group (2), deceleration unit (5) reaches chain type rack tooth wheels (6) respectively by low-speed shaft group (9), rack tooth wheels (6) are by gear (6.4), push-and-pull tooth bar (6.1) and backgear group (6.3) are formed, produce power jack-up upper table surface beam (8) by push-and-pull tooth bar (6.1), gear (6.4) and backgear group (6.3) are installed on the casing (6.2), push-and-pull tooth bar (6.1) is anodontia backgear group (6.3) one sides, and push-and-pull tooth bar (6.1) has a side and gear (6.4) engagement of tooth.The spacing length that manufactures anodontia tooth bar joint (6.1.1) in advance is defined as 3 π m, or 4 π m, or 5 π m, or 6 π m, m is the tooth bar modulus value, to count according to lifting platform lifting stroke that joint tooth bar joint (6.1.1) joins end to end with bearing pin (6.1.2) riveting is that the joint makes its link configuration that can rotate mutually, and end to end tooth bar saves end face accurately near becoming push-and-pull tooth bar (6.1).

Establish lead group (7) in 4 positions of lifting platform symmetry, lead group (7) adopts drawing structure step by step, connecting plate (7.7) connects firmly with (7.6) one on I shape column, and leave the structure that connects firmly with upper table surface beam group (8), I shape column (7.6) is enclosed within the Pyatyi rectangular sleeve (7.5), below rectangular sleeve at different levels (7.4), (7.3), (7.2) nested one by one in base rectangular sleeve (7.1).

The gear driving pair of push-and-pull tooth bar symmetry in pairs uses, and is no less than 2 pairs, 4 groups, also can establish 3 pairs and above logarithm as required.

The invention has the beneficial effects as follows: 1) chain type push-and-pull rack structure makes the lifting transmission possess the reliable transmission of ordinary gear tooth bar, characteristics that efficient is high; 2) the rigid column characteristic of chain type push-and-pull tooth bar and around property chain characteristic make lifting platform under reliable lifting equipment from high minimum; 3) chain type push-and-pull tooth bar simple in structure, easily manufactured, cost is low; 4) the simple guiding of lead modular construction is reliable.

Description of drawings

Fig. 1 is a general structure schematic diagram of the present invention, Fig. 2 is the vertical view of Fig. 1, Fig. 3 is chain type push-and-pull tooth bar drive mechanism figure, Fig. 4 is the vertical view of Fig. 3, and Fig. 5 is the structure chart of chain type push-and-pull tooth bar, and Fig. 6 is the vertical view of Fig. 5, Fig. 7 is the structure chart of tooth bar joint, Fig. 8 is the vertical view of Fig. 7, and Fig. 9 is the structure chart of lead group, and Figure 10 is the vertical view of Fig. 9.

The specific embodiment

As shown in Figure 1 and Figure 2, retarding braking group of motors (1) symmetry is to the both sides outputting power, reach deceleration unit (5) by transmission earth's axis group (2), reach chain type rack tooth wheels (6) respectively by low-speed shaft group (9) again, finally produce power jack-up upper table surface beam (8) with tooth bar four positions.The earth's axis uses earth's axis support group (3) to support at interval.Reductor (5) input adds brake groups (4).General structure is I-shaped earth's axis drive mechanism, and the fulcrum easy arrangement, the earth's axis can be not oversize.Four positions of symmetry are provided with lead group (7) respectively below the upper table surface beam.When power when retarding braking motor (1) finally reaches chain type rack tooth wheels (6), upper table surface beam group (8) is by jack-up or fall, lead group (7) is stretched elongated or withdrawal by upper table surface beam group (8), because the bottom of lead group (7) connects firmly on the embedded board of ground, so it can be resisted side force and plays stablize guide table, but it is provided with direction and should notes making cross section length to being led side force just rationally.

As shown in Figure 3, Figure 4, chain type push-and-pull tooth bar (6.1) is driven by gear (6.4), in the motion of vertical direction liftable, and section of rack level storage that in the horizontal direction can gear train (6.4) is following.In relative two groups of backgears (6.3) the balance gear radial load of establishing with travelling gear (6.4) of the anodontia side of push-and-pull tooth bar (6.1), it is vertical that backgear (6.3) has the wheel rim tooth bar that can lead.Gear (6.4) all is installed on the casing (6.2) by its relative position with backgear (6.3).

As Fig. 5, shown in Figure 6, (6.1.1) is end to end rivets into movable hinge by bearing pin (6.1.2) for tooth bar joint, but it rotates to an anodontia side only, tooth one side tooth bar joint (6.1.1) end face is arranged accurately near so that bear lifting top power.Like this, the one side is the rigid column characteristic; Opposite side is around property chain characteristic, becomes push-and-pull tooth bar (6.1).The profile of tooth of push-and-pull tooth bar (6.1) just shapes after in groups in its riveted joint, and the axial location of profile of tooth must make that to be positioned at the chain link end at the bottom of the teeth groove best.

As Fig. 7, shown in Figure 8, tooth bar joint (6.1.1) does not also have profile of tooth at this moment, but its planform must guarantee certain precision, the spacing length of tooth bar joint is defined as 3 π m, or 4 π m, 5 π m, 6 π m ... m is the tooth bar modulus value, and will count according to lifting platform lifting stroke needs that joint tooth bar joint joins end to end with the bearing pin riveting is that the joint can be rotated as link configuration it mutually, and end to end tooth bar saves end face accurately near so that bear lifting top power.

As shown in Figure 9, lead group (7) adopts drawing structure step by step, and connecting plate (7.7) connects firmly with (7.6) one on I shape column, and leaves the structure that connects firmly with upper table surface beam group (8).I shape column (7.6) is enclosed within the Pyatyi rectangular sleeve (7.5), below rectangular sleeve 7.4 at different levels), (7.3), (7.2) are nested one by one (in base rectangular sleeve (7.1).At different levels is rectangular sleeve, and for ease of processing, the square-section is an open architecture, and wherein a long limit is assembled into rectangular sleeve with sunk screw.Its mating surfaces of structure in advance at different levels all have accurate quality of fit.The bottom of base rectangular sleeve (7.1) is provided with the understructure that connects firmly with the ground embedded board.Inner sleeves at different levels all are equipped with lateral pin and put in the axial groove fixed length slippage and hook the anticreep (not shown) outside it.

Claims

1, stage chain type lifting device, retarding braking group of motors (1) symmetry is to the both sides outputting power, reach deceleration unit (5) by transmission earth's axis group (2), the unit (5) that it is characterized in that slowing down reaches chain type rack tooth wheels (6) respectively by low-speed shaft group (9), rack tooth wheels (6) are by gear (6.4), push-and-pull tooth bar (6.1) and backgear group (6.3) are formed, produce power jack-up upper table surface beam (8) by push-and-pull tooth bar (6.1), gear (6.4) and backgear group (6.3) are installed on the casing (6.2), push-and-pull tooth bar (6.1) is anodontia backgear group (6.3) one sides, push-and-pull tooth bar (6.1) has a side and gear (6.4) engagement of tooth, it is characterized in that the spacing length that will manufacture anodontia tooth bar joint (6.1.1) in advance is defined as 3 π m, or 4 π m, or 5 π m, or 6 π m, m is the tooth bar modulus value, to count according to lifting platform lifting stroke that joint tooth bar joint (6.1.1) joins end to end with bearing pin (6.1.2) riveting is that the joint makes its link configuration that can rotate mutually, and end to end tooth bar saves end face accurately near becoming push-and-pull tooth bar (6.1).

2, stage chain type lifting device according to claim 1, it is characterized in that establishing lead group (7) in 4 positions of lifting platform symmetry, lead group (7) adopts drawing structure step by step, connecting plate (7.7) connects firmly with (7.6) one on I shape column, and leave the structure that connects firmly with upper table surface beam group (8), I shape column (7.6) is enclosed within the Pyatyi rectangular sleeve (7.5), below rectangular sleeve at different levels (7.4), (7.3), (7.2) nested one by one in base rectangular sleeve (7.1).

3, stage chain type lifting device according to claim 1 is characterized in that the gear driving pair symmetry use in pairs of push-and-pull tooth bar, is no less than 2 pairs, 4 groups.