TWI615565B - Screw double lift - Google Patents

Description

Screw double lift

The present invention relates to an elevator, and more particularly to a screw double lift type elevator.

Because of the changes in the social environment, high-rise buildings are built, people use the lifting devices more frequently, and the degree of dependence is relatively doubled, so the safety of the lifting device should not be neglected. The transmission methods of the traditional lifting device include oil pressure transmission, steel cable transmission, screw transmission, etc. Among them, steel cable transmission is the most common, but the biggest hazard condition is the accidental fracture of the steel cable, resulting in the death of the person falling, or falling of materials and wounding. Accidents, and the steel cable has the disadvantage of frequent replacement repair and maintenance; in addition, the oil pressure transmission has leakage and subsequent maintenance problems: for example, oil pressure leakage not only causes oil pollution and pollutes the environment, but also the maintenance cost is considerable, plus the oil pipe and the The problem of aging of moving oil needs to be repaired and replaced regularly, so there is a tendency to change the way of screw drive.

At present, the screw drive lifting device is generally used to drive a single screw to drive a carrier to perform linear lifting. However, the single screw driving lifting device requires a long moving movement of the carrier, and the required work of the screw is required. length It also grows relatively, and a long screw is prone to problems such as difficulty in production and processing and difficulty in installation.

In addition, a side-by-side dual-drive screw lifting device disclosed in the Patent No. M300673 of the Republic of China includes a driving mechanism, a first transmission mechanism and a second transmission mechanism. The first transmission mechanism includes a transmission screw driven by the driving mechanism and a telescopic tube assembly screwed to the transmission screw and linearly movable relative thereto. The end of the telescopic tube assembly is fixed to a connecting member. . The second transmission mechanism is juxtaposed in parallel with the first transmission mechanism, and includes a sleeve driven by the driving mechanism, a telescopic tube assembly accommodated inside the sleeve and axially moved relative thereto, and a telescopic tube assembly A drive screw that is screwed to the telescopic tube assembly and linearly movable relative thereto, the end of the telescopic tube assembly being coupled to the aforementioned coupling member. The driving mechanism simultaneously drives the transmission screw of the first transmission mechanism and the telescopic tube assembly of the second transmission mechanism to rotate, so that the transmission screw of the first and second transmission mechanisms and the telescopic tube assembly simultaneously generate linear relative movement. The lifting device is driven by the parallel double-drive screw. Although the working length required for the transmission screw can be shortened, the telescopic tube assembly is sleeved with the transmission screw, and the second transmission mechanism also sleeves the sleeve. The tube assembly makes it difficult to install and adjust due to too many kits, and there are doubts on the transmission load. Moreover, the transmission screw is the main force component, so the above transmission mechanism cannot bear the radial force.

Accordingly, it is an object of the present invention to provide a screw-up type elevator that overcomes at least the disadvantages of the prior art.

Therefore, the screw double lifting elevator of the present invention comprises a track frame, a slide unit, a drive screw set, a drive unit, a linkage screw set, a driven screw set, a transmission unit, and a load slippery seat.

The rail frame includes two parallel spaced apart support members extending in an up and down direction, two inner rails respectively disposed at opposite sides of the support members, and two outer sides respectively disposed at opposite sides of the support members The rails, the inner rails and the outer rails all extend in the up and down direction.

The sliding seat unit includes an upper sliding seat and a sliding seat which are slidably disposed in the vertical direction of the rail frame, and the opposite sides of the upper sliding seat are respectively disposed on the inner side rails. The opposite sides of the lower base are the sliding limits located on the inner rails.

The transmission screw set includes a transmission nut member fixed to the sliding seat, and a transmission screw that is threaded and screwed to the transmission nut member and whose axis is parallel to the up and down direction. The drive screw includes a drive end oppositely disposed and a connecting end rotatably disposed on the track frame.

The drive unit is coupled to the drive end of the drive screw for driving the drive screw to rotate.

The interlocking screw set includes a linked nut member fixed to the rail frame, and a linking screw that is threaded and screwed to the interlocking nut member and whose axis is parallel to the up and down direction. The interlocking screw includes a connecting end portion and an interlocking end portion which are oppositely disposed and rotatably respectively disposed on the upper sliding seat and the sliding seat.

The driven screw set includes a driven screw whose own axis is parallel to the up and down direction. The driven screw has opposite ends and is rotatably disposed at a connecting end portion and a connecting end portion of the upper sliding seat and the sliding seat, respectively.

The transmission unit is coupled between the interlocking ends of the linking screw and the driven screw, and is configured to cause the linking screw to rotate simultaneously with the driven screw.

The load sliding seat is slidably disposed in the rail frame in the vertical direction, and is connected to the driven screw. The opposite sides of the load sliding seat are respectively slidably disposed on the outer rails.

Wherein, when the driving unit drives the driving screw to rotate, the driving screw spirally drives the driving nut member to move in the up and down direction to drive the sliding seat together with the linking screw, the driven screw, the upper sliding seat and the The load carriage moves in the up and down direction relative to the track frame. During the movement of the linkage screw relative to the linkage nut member, the linkage screw is rotated by the linkage nut member to rotate, and the transmission unit simultaneously drives the transmission unit. The driven screw rotates to push the load carriage to move in the up and down direction relative to the carriage unit.

The effect of the invention is that the driving unit drives the driving screw to push the sliding seat to move, and simultaneously drives the linking screw and the driven screw to rotate, so as to push the load sliding seat to move again. Therefore, the moving stroke of the load sliding seat relative to the rail frame is greater than the moving stroke of the sliding seat relative to the rail frame, thereby achieving the effect of multiple lifting movements, not only reducing the required working length of the screw, but also reducing The screw has difficulty in production and cost, and reduces the difficulty of handling and the limitation of the installation space. In addition, the upper sliding seat, the sliding seat and the load sliding seat support the radial force of the load on the rail frame, thereby avoiding the screw. A radial force is applied to increase the load capacity of the load carriage.

1‧‧‧Track rack

11‧‧‧Support

12‧‧‧ inside track

13‧‧‧Outer orbit

14‧‧‧Fixed parts

2‧‧‧slide unit

21‧‧‧Upper slide

22‧‧‧ 滑座

23‧‧‧Roller set

3‧‧‧Drive screw set

31‧‧‧Drive nut parts

32‧‧‧Drive screw

321‧‧‧Drive end

322‧‧‧Connected end

33‧‧‧ bearing

4‧‧‧ drive unit

41‧‧‧Motor

42‧‧‧Reducer

5‧‧‧ linkage screw set

51‧‧‧ linkage nut parts

52‧‧‧ linkage screw

521‧‧‧Connected end

522‧‧‧ linkage end

53‧‧‧ bearing

6‧‧‧ driven screw set

61‧‧‧ driven screw

611‧‧‧Connected end

612‧‧‧ linkage end

62‧‧‧ bearing

7‧‧‧Transmission unit

71‧‧‧First gear

72‧‧‧second gear

8‧‧‧Load slide

81‧‧‧Roller set

9‧‧‧Manned car body

Z‧‧‧Up and down direction

Other features and advantages of the present invention will be apparent from the embodiments of the drawings, wherein: Figure 1 is an exploded perspective view of an embodiment of a screw-up lift of the present invention; FIG. 3 is a front view of the embodiment, illustrating a load slide of the embodiment at a first height position; FIG. 4 is a front view of the embodiment, illustrating the load of the embodiment. The slide is at a second height position; and Figure 5 is a perspective view of the embodiment showing the use of the embodiment as a passenger elevator in combination with a passenger compartment.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of the screw double lifting elevator of the present invention comprises a track frame 1 , a slide unit 2 , a drive screw set 3 , a drive unit 4 , and a linkage screw Group 5, a driven screw set 6, a transmission unit 7, and a load slide 8.

The rail frame 1 includes two support members 11 which are spaced apart in parallel and extend upright in an up-and-down direction Z. Two inner rails 12 are respectively disposed at opposite sides of the support members 11, and two are respectively disposed on the support members. The outer rail 13 at the opposite side of the 11 and a fixture 14 attached to the middle of the support members 11. Each of the inner rails 12 and each of the outer rails 13 extends in the up and down direction Z.

The slider unit 2 includes an upper sliding seat 21 and a lower sliding seat 22 which are slidably disposed in the vertical direction Z and spaced apart from each other. The opposite side portions of the upper sliding seat 21 are respectively slidably disposed on the inner side rails 12, and the opposite side portions of the lower sliding seat 22 are located on the inner side rails 12. More preferably, the upper slide 21 and the lower seat The two opposite sides of the respective 22 can be slid in the inner rails 12 through the two roller sets 23 respectively.

The transmission screw set 3 includes a transmission nut member 31 fixed to the lower sliding seat 22, and a transmission screw 32 which is threaded and screwed to the transmission nut member 31 and whose axis is parallel to the vertical direction Z. The drive screw 32 includes a driving end portion 321 disposed oppositely, and a connecting end portion 322 rotatably disposed on the fixing member 14 of the rail frame 1. In this embodiment, a bearing 33 is disposed between the connecting end portion 322 of the driving screw 32 and the fixing member 14. However, the bearing 33 can also be replaced with other shaft rotating members such as a bushing.

The driving unit 4 is disposed at the bottom of the track frame 1 and is connected to the driving end portion 321 of the driving screw 32 for driving the driving screw 32 to rotate. In this embodiment, the driving unit 4 is a combination of a motor 41 and a speed reducer 42. However, the driving unit 4 can also be a direct drive motor to reduce the number of components and facilitate assembly.

The interlocking screw set 5 includes an interlocking nut member 51 fixed to the fixing member 14 of the rail frame 1, and a linkage mechanism which is threaded and screwed to the interlocking nut member 51 and whose axis is parallel to the vertical direction Z Screw 52. The interlocking screw 52 includes a connecting end portion 521 and a linking end portion 522 which are oppositely disposed and rotatably disposed respectively on the upper sliding seat 21 and the lower sliding seat 22. In this embodiment, the connecting end portion 521 of the linking screw 52 is A bearing 53 is disposed between the upper sliding seat 21, and a bearing 53 is disposed between the connecting end 522 of the linking screw 52 and the sliding seat 22. However, the bearings 53 may be replaced with bushings. Other axis rotating components.

The driven screw set 6 includes a driven screw 61 whose own axis is parallel to the up-and-down direction Z. The driven screw 61 has oppositely disposed and rotatably disposed at a connecting end of the upper sliding seat 21 and the lower sliding seat 22, respectively. The portion 611 and the interlocking end portion 612. In the present embodiment, a bearing 62 is disposed between the connecting end portion 611 of the driven screw 61 and the upper sliding seat 21, and a bearing 62 is disposed between the linking end portion 612 of the driven screw 61 and the sliding seat 22. However, the above-mentioned bearings 62 can also be replaced with other shaft-rotating components such as bushings.

The transmission unit 7 is connected between the interlocking ends 522 and 612 of the linkage screw 52 and the driven screw 61, and is configured to cause the linkage screw 52 to rotate simultaneously with the driven screw 61. In the embodiment, the transmission unit 7 includes a first gear 71 connected to the linking end 522 of the linking screw 52 and a connecting end portion 612 connecting the driven screw 61 and meshing with the first gear 71. The second gear 72, but not limited thereto, the first gear 71 and the second gear 72 of the transmission unit 7 are also replaced with a sprocket or a pulley, and are driven by a chain or belt connection, thereby lowering the first gear 71 and the second gear 72 directly mesh the noise caused by the transmission.

The load carriage 8 is slidably disposed in the rail frame 1 in the up and down direction Z, and is connected to the driven screw 61 and is connected to the passenger compartment 9. The opposite side portions of the load carriage 8 are slidably disposed on the outer rails 13, respectively. More preferably, the opposite side portions of the load carriage 8 are respectively slidable on the outer rails 13 through the two roller groups 81.

In this embodiment, the driving screw 32, the linking screw 52 and the driven screw 61 are arranged side by side, and the driven screw 61 is located between the driving screw 32 and the linking screw 52, whereby the driven screw The connection between the screw 61 and the load slide 8 can overlap the center of gravity of the load slide 8 to avoid the generation of a rotational moment during the transmission, but the arrangement of the drive screw 32, the linkage screw 52 and the driven screw 61 is not In the above limitation, by changing the component type of the transmission unit 7, the adjustment can be changed as needed.

Referring to FIG. 2, FIG. 3 and FIG. 4, when the driving unit 4 drives the driving screw 32 to rotate clockwise (counterclockwise), the driving screw 32 spirally pushes the driving nut member 31 upward in the up and down direction Z (downward Moving to drive the lower base 22 together with the linkage screw 52, the driven screw 61, the upper carriage 21 and the load carriage 8 to move upward (downward) in the up and down direction Z relative to the track frame 1 During the upward (downward) movement of the interlocking screw 52 relative to the interlocking nut member 51, the interlocking screw 52 is screwed by the interlocking nut member 51 to rotate clockwise (counterclockwise) and simultaneously through the transmission unit 7 Drive this The driven screw 61 rotates counterclockwise (clockwise) to spirally push the load carriage 8 upward (downward) in the up and down direction Z with respect to the carriage unit 2.

However, the rotation direction of the driving screw 32, the linking screw 52, and the driven screw 61 is not limited to the above, and the transmission screw 32, the linking screw 52, and the driven screw 61 can be changed. The thread orientation changes, and of course the thread orientation of the component that is screwed to the three should also change accordingly.

The movement stroke of the load slide 8 relative to the track frame 1 is the sum of the movement stroke of the drive screw 32 to push the slide seat 22 and the movement stroke of the driven screw 61 to push the load slide 8, and The transmission screw 32, the linkage screw 52 and the driven screw 61 have the same spiral lead, and the transmission ratio of the transmission unit 7 is one, and the transmission screw 32 pushes the sliding seat 22 The moving stroke is the same as the moving stroke of the driven screw 61 pushing the load carriage 8, so that the moving stroke of the load sliding seat 8 relative to the rail frame 1 can be doubled. The driving screw 32 pushes the sliding seat 22 The effect of moving the trip.

In addition, by adjusting the screw lead ratio of the driving screw 32, the linking screw 52 and the driven screw 61, and the gear ratio of the transmission unit 7, the load carriage 8 can be made relative to the track frame. The moving stroke of 1 is increased by a multiple, and the working length required for the driving screw 32, the linking screw 52 and the driven screw 61 can be shortened to reduce the difficulty in manufacturing and processing the screw component.

Referring to FIG. 5, the present embodiment is described in connection with a passenger compartment 9 as a use aspect of a passenger elevator. The passenger compartment 9 is fixedly disposed on the load carriage 8, whereby the embodiment can be used to drive The passenger compartment 9 is moved up and down.

In summary, the screw hoisting elevator of the present invention is configured by the connection transmission between the components, so that the driving unit 4 drives the driving screw 32 to push the sliding seat 22 to move, and simultaneously drives the linking screw 52 and the driven The screw 61 rotates to push the load carriage 8 to move again, so that the movement stroke of the load carriage 8 relative to the track frame 1 is greater than the movement stroke of the slide seat 22 relative to the track frame 1, thereby achieving multiple times The effect of lifting and lowering can not only reduce the required working length of the screw, reduce the difficulty and cost of the screw production, but also reduce the difficulty of handling and the limitation of the installation space, and the upper sliding seat 21, the sliding seat 22 and the The load carriage 8 supports the radial force of the load on the rail frame 1, and the above-mentioned screw can be prevented from receiving radial force to increase the load capacity of the load carriage 8, so that the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

1‧‧‧Track rack

11‧‧‧Support

12‧‧‧ inside track

13‧‧‧Outer orbit

14‧‧‧Fixed parts

2‧‧‧slide unit

21‧‧‧Upper slide

22‧‧‧ 滑座

5‧‧‧ linkage screw set

51‧‧‧ linkage nut parts

52‧‧‧ linkage screw

521‧‧‧Connected end

522‧‧‧ linkage end

53‧‧‧ bearing

6‧‧‧ driven screw set

61‧‧‧ driven screw

23‧‧‧Roller set

3‧‧‧Drive screw set

31‧‧‧Drive nut parts

32‧‧‧Drive screw

321‧‧‧Drive end

322‧‧‧Connected end

4‧‧‧ drive unit

41‧‧‧Motor

42‧‧‧Reducer

611‧‧‧Connected end

612‧‧‧ linkage end

62‧‧‧ bearing

7‧‧‧Transmission unit

71‧‧‧First gear

72‧‧‧second gear

8‧‧‧Load slide

81‧‧‧Roller set

Z‧‧‧Up and down direction

Claims (5)

A screw double lift type elevator comprising: a track frame comprising two parallel spaced apart support members extending in an up and down direction, two inner side rails respectively disposed at opposite sides of the support members, and two separate sets The outer rails at the opposite sides of the support members, each of the inner rails and the outer rails extend in the up and down direction; a slider unit includes a slider unit that is slidably disposed in the rail frame in the up and down direction and spaced apart from each other An upper sliding seat and a lower sliding seat, wherein the opposite sides of the upper sliding seat are respectively limited to the inner side rails, and the opposite sides of the sliding seat are sliding limits located on the inner side rails; a driving screw set The utility model comprises a transmission nut member fixed to the sliding seat, and a transmission screw which is threaded and screwed to the transmission nut member and whose axis is parallel to the up and down direction, the transmission screw includes a driving end portion which is oppositely disposed And a connecting end rotatably disposed on the rail frame; a driving unit connected to the driving end of the driving screw for driving the driving screw to rotate; a linkage screw set, including a fixing An interlocking nut member of the rail frame, and a linking screw which is threaded and screwed to the interlocking nut member and whose axis is parallel to the up and down direction, the linking screw includes oppositely disposed and rotatably disposed on the sliding plate a connecting end and a connecting end portion of the sliding seat; a driven screw set includes a driven screw having a self-axis parallel to the up-and-down direction, the driven screw having oppositely disposed and rotatably disposed on the upper sliding seat and a connecting end of the sliding seat and a linking end a transmission unit connected between the interlocking ends of the linking screw and the driven screw, and configured to cause the linking screw to rotate simultaneously with the driven screw; and a load sliding seat along the up and down direction Slidingly disposed on the rail frame and connected to the driven screw, the opposite sides of the load sliding seat are respectively slidably disposed on the outer rails; wherein when the driving unit drives the driving screw to rotate, the transmission The screw screw pushes the transmission nut member to move in the up and down direction to drive the sliding seat along with the linking screw, the driven screw, the upper sliding seat and the load sliding seat to move in the up and down direction relative to the track frame, During the movement of the linkage screw relative to the linkage nut member, the linkage screw is rotated by the linkage nut member to rotate, and the transmission unit is simultaneously driven to rotate by the transmission unit to be screwed Load carriage relative to the carriage means is moved in the vertical direction. The screw-up type elevator according to claim 1, wherein the sliding seat is in the same direction as the moving direction of the load carriage. The screw hoisting type elevator according to claim 2, wherein the two opposite sides of the upper sliding seat and the sliding seat are respectively slidable through the two roller sets on the inner side rails, and the load is slidable. The opposite side portions of the seat are respectively slid in the outer track through the two roller sets. The screw doubling type elevator according to claim 2, wherein the rail frame further comprises a fixing member connected to the middle portion of the supporting members, the connecting end portion of the driving screw being rotatably disposed on the fixing portion And the interlocking nut member is fixed to the fixing member. The screw doubling type elevator according to claim 1, wherein the transmission unit includes a first gear that connects the interlocking ends of the linking screw and a linking end that connects the driven screw and the first The second gear meshed by the gear.