CN2297593Y

CN2297593Y - Turntable screw drive mechanism

Info

Publication number: CN2297593Y
Application number: CN 97205079
Authority: CN
Inventors: 于红
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-01-16
Filing date: 1997-01-16
Publication date: 1998-11-18
Anticipated expiration: 2007-01-16

Abstract

The utility model relates to a mechanical transmission device, particularly a rotating disk screw rod transmission device which comprises a casing of a passage which is arranged in the radial direction, and the casing is sheathed on the screw rod. A nut valve is loaded in the passage, and an opening and closing mechanism which drives the nut valve to open and close is arranged on the casing. The utility model has the advantages of reasonable and compact structure, strong carrying capacity and safety and can rapidly run at the time of zero load, and simultaneously power source is artificially operated or is mechanically driven. The utility model can be used in various rapid running occasions which need zero load.

Description

The rotation plate type screw drive mechanism

The utility model relates to a kind of rotation plate type screw drive mechanism, belongs to mechanical transmission, needs the occasion of operation fast to use when being particularly suitable for zero load.

Screw drive is common in modern mechanical, such as the tight rope mechanism of vice, drawing, the material loading device of evading etc. all is to adopt screw drive usually, although said mechanism is transmitting movement and load reliably, but because it is that integrated type nut transmission efficiency is low, time-consuming, when zero load, needing more to be unsuitable for the occasion of operation fast to use.

Can move fast when bearing capacity was strong, unloaded when the purpose of this utility model was to provide a kind of work, efficient height, easy to operate rotation plate type screw drive mechanism.

The purpose of this utility model realizes by the following technical solutions, comprises that a housing that radially has passage in it is set on the screw rod, and the nut lobe is put in the passage, and the open-and-close mechanism of drive nut lobe folding is loaded on the housing.

Along circumferentially being laid with shift fork, and match with the periphery on housing top above the disk body of described open-and-close mechanism, the inside sidewalls of disk body is along circumferentially being laid with the projection that forces nut lobe retraction, between the two adjacent projectioies for stretching out the chamber.

The inner of described nut lobe is provided with the trapezoidal thread that matches with screw rod, has allocating slot above the outer end.

Described lower part of frame one side is provided with safety detent, and the lower sidewall of disk body is having the lock pin groove corresponding to the nut lobe is closed with the position of upholding.

The utility model compared with prior art, owing to adopted four nut lobe containings entirely, open-and-close mechanism, screw thread self-locking, added a series of technical measures such as safety detent, and through evidence have that compact structure is reasonable, bearing capacity is safe and reliable by force, operational efficiency advantages of higher fast during in zero load, its power source is that manual operation or machinery drive and all can simultaneously.

Fig. 1 is a main TV structure schematic representation of the present utility model.

Fig. 2 is the A-A sectional structure schematic representation of Fig. 1.

Fig. 3 is the C-C sectional structure schematic representation of Fig. 2.

Fig. 4 is the D-D broken section structural representation of Fig. 1.

Fig. 5 is the structural representation of E to partial view.

Fig. 6 is the main TV structure schematic representation of housing.

Fig. 7 is the side-looking structural representation of housing.

Fig. 8 is the main TV structure schematic representation of open-and-close mechanism disk body.

Fig. 9 is the side-looking structural representation of open-and-close mechanism disk body.

Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings, the center of housing 2 has screw hole, radially have passage 9 and orthogonal in it, housing 2 is set on the screw rod 4, nut lobe 6 is put in the passage 9, its the inner is provided with the trapezoidal thread that matches with screw rod 4, have allocating slot 10 above the outer end, the disk body 3 of open-and-close mechanism is set on the housing 2 fixing with O type jump ring 5, edge circumferentially is laid with shift fork 8 above it, and match with the periphery on housing 2 tops, the sidewall upper edge circumferentially is laid with between 13, two adjacent projectioies 13 of projection of drawing nut lobe 6 in to stretching out chamber 12; Bottom one side of described housing 2 is provided with the safety detent 1 that spring 7 is housed on it, and the lower sidewall of disk body 3 has lock pin groove 11 corresponding to nut lobe 6 closed positions with extension.

When the utility model uses, its power source is used artificial hand or all can with the machinery drive, nut lobe 6 is in closed full containing state during work, so normal operation realizes lifting or clamping work under drive power source, when this operating mode finishes, the disk body 3 of open-and-close mechanism is spent to being rotated counterclockwise 60, be positioned at the allocating slot 11 that the shift fork 8 that is driven nut lobe 6 one sides is wedged driven nut lobe 6 front ends gradually this moment, meanwhile the chamber 12 of stretching out on the sidewall of disk body 3 is also just forwarding to this and is being driven nut lobe 6 corresponding positions, realize the operating mode that nut lobe 6 is upheld, move fast in the time of can realizing zero load smoothly this moment, improve work efficiency, save the no-load running time, safety detent 1 was upspring and was embedded disk body 3 and be located at and uphold in the locational locked groove 11 this moment, rotated to prevent to be shaken; Otherwise again safety detent 1 is pressed the lock pin handle to next during if work, the disk body 3 of open-and-close mechanism can drive nut lobe 6 closures can be carried out work to 60 degree that turn clockwise.

Claims

1, a kind of disc type screw drive mechanism is characterized in that comprising that a housing (2) that radially has passage (9) in it is set on the screw rod (4), and nut lobe (6) is put in the passage (9), and drive nut lobe (6) open-and-close mechanism is loaded on the housing (2).

2, driving mechanism according to claim 1, the disk body (3) that it is characterized in that described open-and-close mechanism is top along circumferentially being evenly equipped with shift fork (8), and match with the periphery on housing (2) top, the inside sidewalls of disk body (3) is along circumferentially being laid with the projection (13) that forces nut lobe (6) retraction, between the two adjacent projectioies (13) for stretching out chamber (12).

3, driving mechanism according to claim 1 is characterized in that the inner of described nut lobe (6) is provided with the trapezoidal thread that matches with screw rod (4), is provided with allocating slot (10) above the outer end.

4, driving mechanism according to claim 1 is characterized in that bottom one side of described housing (2) is provided with safety detent (1), and the lower sidewall of disk body (3) is having lock pin groove (11) corresponding to nut lobe (6) is closed with the position of upholding.