Pulley for building rolls device
Technical field
The present invention relates to a kind of pulley for building and roll device.
Background technique
In known technical field, on building site, often need to lift various structural materials and some other instrument, to rise to suitable position, constructability operation, the general pulley gear that adopts lifts, existing pulley is generally simple pulley mechanism, and the design that its structure is rigidity, under the impact of some load, easily there is metal fatigue, have certain potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the problems referred to above, the pulley for building that provides a kind of and have flexible support ability, can bear certain load impacting rolls device.
The technical solution adopted for the present invention to solve the technical problems is: a kind of pulley for building rolls device, comprise pulley, be inserted with T-shaped bar at the center of described pulley, on a left side for described pulley, right both sides and be positioned at and be respectively equipped with left ball bearing and right ball bearing on T-shaped bar, the inner sleeve of described left ball bearing and right ball bearing is all connected with T-shaped bar by flat key, be bolted with degree of tightness adjusting nut at the right-hand member of described T-shaped bar, between the T-shaped end and left ball bearing of described T-shaped bar, between degree of tightness adjusting nut and right ball bearing, be equipped with end cover, bottom at described left ball bearing and right ball bearing is all provided with U-shaped boatswain chair, and described left ball bearing and right ball bearing are all positioned at the bottom of the U-shaped bayonet socket of U-shaped boatswain chair, between the upper end of described U-shaped boatswain chair, be equipped with connection cross bar, below described connection cross bar, be provided with polyurethane buffering foam pad, above described pulley, be provided with U-shaped strut, and the two ends of described U-shaped strut are weldingly fixed on respectively the middle part of two connection cross bars.
Further, as a kind of concrete mode of execution, the present invention is equipped with crashproof buffering steel ball between the T-shaped end of described end cover and T-shaped bar and degree of tightness adjusting nut.
The invention has the beneficial effects as follows: the present invention is simple in structure; be different from traditional pulley gear; adopt the ball bearing of bilateral; coordinate polyurethane buffering foam pad; can play certain flexible support effect, certain load to the impact of pulley under, can play the effect of buffering; protection pulley mechanism, improves its working life and Safety performance.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side view of Fig. 1;
In figure: 1. pulley, 2.T type bar, 3. left ball bearing, 4. right ball bearing, 5. degree of tightness adjusting nut, 6. end cover, 7. crashproof buffering steel ball, 8.U type boatswain chair, 9. connects cross bar, 10. polyurethane buffering foam pad, 11.U type strut.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present invention is only described in a schematic way, and therefore it only shows the formation relevant with the present invention.
The present invention's pulley for building as depicted in figs. 1 and 2 rolls the preferred embodiment of device, comprise pulley 1, be inserted with T-shaped bar 2 at the center of described pulley 1, on a left side for described pulley 1, right both sides and be positioned at and be respectively equipped with left ball bearing 3 and right ball bearing 4 on T-shaped bar 2, the inner sleeve of described left ball bearing 3 and right ball bearing 4 is all connected with T-shaped bar 2 by flat key, be bolted with degree of tightness adjusting nut 5 at the right-hand member of described T-shaped bar 2, between the T-shaped end and left ball bearing 3 of described T-shaped bar 2, between degree of tightness adjusting nut 5 and right ball bearing 4, be equipped with end cover 6, bottom at described left ball bearing 3 and right ball bearing 4 is all provided with U-shaped boatswain chair 8, and described left ball bearing 3 and right ball bearing 4 are all positioned at the bottom of the U-shaped bayonet socket of U-shaped boatswain chair 8, between the upper end of described U-shaped boatswain chair 8, be equipped with and connect cross bar 9, below described connection cross bar 9, be provided with polyurethane buffering foam pad 10, above described pulley 1, be provided with U-shaped strut 11, and the two ends of described U-shaped strut 11 are weldingly fixed on respectively the middle part of two connection cross bars 9.
Between the T-shaped end of described end cover 6 and T-shaped bar 2 and degree of tightness adjusting nut 5, be equipped with crashproof buffering steel ball 7.
The present invention is simple in structure; be different from traditional pulley gear; adopt the ball bearing of bilateral; coordinate polyurethane buffering foam pad; can play certain flexible support effect, certain load to the impact of pulley under, can play the effect of buffering; protection pulley mechanism, improves its working life and Safety performance.
Taking above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this invention technological thought, carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to claim scope.