CN2241139Y

CN2241139Y - Automatic windproof braking machine for hoisting machine

Info

Publication number: CN2241139Y
Application number: CN 95234508
Authority: CN
Inventors: 刘法福
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-14
Filing date: 1995-08-14
Publication date: 1996-11-27
Anticipated expiration: 2005-08-14

Abstract

The utility model relates to the technique of a safety device, and the automatic windproof braking machine for hoisting machines comprises a wind force signal instrument, an order actuating rod connected with the wind force signal instrument, a hoisting cylinder connected with the order actuating rod, rope fixed on the hoisting cylinder, a heavy bob fixed on the rope, a gravity hydraulic cylinder contacted with the heavy bob, a driving wheel brake cylinder communicated with the gravity cylinder, a driving wheel brake covering device connected with the driving wheel brake cylinder, a driven wheel brake cylinder communicated with the gravity cylinder and a driven wheel brake connected with the driven wheel brake cylinder. The utility model can save energy and can adapt to poor working environment, and the utility model can automatically and smoothly brake without damaging the machine parts of the hoisting machine under the condition of no people and no power.

Description

The automatic wind prevention braking machine of crane

The utility model belongs to the technical field of safety device.

The automatic wind prevention braking device of now on gauntry crane, using, general is electronic automatic control device, it provides wind velocity signal by anemoscope, when wind speed reaches rated value, device is stopped operation, and implements braking automatically.But electronics package is unsuitable for such strong vibration equipment of gauntry crane and open work environment, and electronic component very easily damages under strong vibration is impacted, and the open work environment also makes very easily aged deterioration of electronic devices and components.And electronically controlled braking both emergency braking, impulsive force were big, crane parts rapid wear, and electron steering wastes energy.

The purpose of this utility model provide a kind of adapt to harsh environment, energy-conservation, do not have under electricity, the unmanned condition yet can the automatic steady braking the wind prevention braking machine.

The automatic wind prevention braking machine of this crane, comprise vertical shaft, activity is contained in the casing on the vertical shaft, be fixed on wind bowl on the casing by connecting rod, be hinged on the centrifugal club on the casing, be fixed on the centrifugal globe of centrifugal club one end, in casing, be contained on the vertical shaft and centrifugal club other end bonded assembly core frame, in casing, be contained in the back of the body that flexibly connects with core frame on the vertical shaft and push away batter post, activity is contained on the casing end and pushes away the impact bar that batter post contacts with the back of the body, be enclosed within the spring on the impact bar, be fixed on the batting of the impact bar other end, comprise that also being contained on the support end can contact with batting, which is provided with the command bar of draw-in groove, but the draw-in groove ingear kayser of and instruction bar wheel, one end is fixed on the cylinder on the kayser wheel, an end stretches out the axle that the kayser wheel other end stretches out cylinder in cylinder, activity is contained in the shift fork that stretches out the cylinder end on the axle, be fixed on the gear on the shift fork, activity is contained on the axle, the screw thread of one end and shift fork bonded assembly forward propelling unit, be contained in the axle radial hole in the resistance spring, the resistance ball that contacts with the angle of rake inner diameter wall of resistance spring and forward, activity is contained in a subtend propelling unit of last kayser wheel end, in cylinder, be contained in the clutch block between forward propelling unit and subtend propelling unit, be contained in the interior spline reversed column of radial hole of clutch block, be enclosed within a upper spline reversed column and just respectively, compression spring between the subtend propelling unit, be contained in the spring with a tight waist in the clutch block outside face groove, one end is fixed on the rope on the outer surface of cylinder, be fixed on the weight of the rope other end, at the falling direction energy of weight and the gravity cylinder body of locating, be fixed on the spring on the gravity cylinder body inner bottom surface, at the piston of gravity cylinder body internal fixation on spring, stretch out the piston rod that can contact of gravity cylinder body upper wall with the piston upper end that is connected as a single entity with weight, the three-way pipe that one go side is communicated with the gravity cylinder body, the driving wheel brake cylinder casing that is communicated with three-way pipe two go sides, piston in the driving wheel brake cylinder casing, one end is fixed on the piston, one end stretches out the piston rod of driving wheel brake cylinder casing upper wall, in the driving wheel brake cylinder casing, be enclosed within the spring on the piston rod, its brake lever can with the driving wheel bag of end in contact on the piston rod device of stopping, the pipe that is communicated with the gravity cylinder body, be connected on the reverse check valve on the pipe, be connected on the forward check valve on three-way pipe three go sides, the follower brake cylinder casing that is communicated with reverse check valve and forward check valve, piston in passive brake cylinder casing, one end and the piston end that is connected as a single entity stretches out the piston rod of follower brake cylinder casing upper wall, in the follower brake cylinder casing, be enclosed within the spring on the piston rod, the brake lever that one end contacts with piston rod, be contained in the guide plate which is provided with the hole on the frame, be contained in the double-screw bolt in the guiding plate hole, be fixed on the connecting panel that the double-screw bolt upper end can contact with brake lever, below guide plate, be fixed on the tooth bar of double-screw bolt lower end, be enclosed within the spring on the double-screw bolt between connecting panel and guide plate.

Because whole device all is simple physical construction, can adapt to extremely bad working environment, and in energy free consumption at ordinary times, when wind-force reached certain value, the kayser wheel was freed, weight falls, pound on the piston rod of gravity cylinder, because the effect of check valve, at first make the device braking of stopping of driving wheel bag, then follower is not had the yet braking of automatic steady under the electric condition by the tooth bar forced brake thereby be implemented in nobody.Avoid the big emergency braking of impulsive force, be not easy to cause the damage of crane parts.

Accompanying drawing shows embodiment of the present utility model, wherein:

Figure 1 shows that the structural representation of the automatic wind prevention braking machine of crane;

Figure 2 shows that semi-sictional view enlarged drawing along A-A line shown in Figure 1;

Figure 3 shows that semi-sictional view enlarged drawing along B-B line shown in Figure 1;

Figure 4 shows that along G shown in Figure 1 to the semi-sictional view enlarged drawing;

The automatic wind prevention braking machine of crane as shown in the figure, comprise vertical shaft 15, activity is contained in the pagoda shape casing 16 on the vertical shaft 15, be screwed in the wind bowl 17 of casing 16 upper ends by connecting rod, be hinged on the L shaped centrifugal club 20 of casing 16 lower ends, the centrifugal globe 21 that is connected as a single entity with centrifugal club 20 upper ends, in casing 16, be contained on the vertical shaft 15 and centrifugal club 20 lower end pivotally attached core frames 18, in casing 16, be contained in the back of the body that flexibly connects with core frame 18 on the vertical shaft 15 and push away batter post 19, activity is contained on the casing 16 end and pushes away the impact bar 22 that batter post 19 contacts with the back of the body, be enclosed within the spring 23 on the impact bar 22, stretch out the batting 24 that chassis end is connected as a single entity with impact bar 22, being contained on the support left end can contact with batting 24 and which is provided with holding of draw-in groove and make bar 25, be contained in and hold the lifting motor Magnetic force tracting device 26 that makes on bar 25 and the support, can with hold the draw-in groove ingear kayser wheel 12 that makes bar 25, one end is fixed on the cylinder 6 on the kayser wheel 12, left end stretches out kayser wheel 12 in cylinder 6, right-hand member stretches out the axle 1 of cylinder 6, activity is contained in the shift fork 4 of axle 1 right-hand member, be fixed on the gear 3 on the shift fork 4, activity is contained in the screw and the shift fork 4 bonded assembly forward propelling units 5 of right-hand member on the axle 1, forward propelling unit 5 is hollow truncated cone-shaped, hollow periphery in round platform platform bottom surface is provided with threaded tubular projection, be contained in the resistance spring 44 in axle 1 the radial hole, the resistance ball 45 that contacts with the inner diameter wall of resistance spring 44 and forward propelling unit 5, activity is contained on the axle 1 kayser and takes turns the subtend propelling unit 11 of 12 ends in cylinder 6, subtend propelling unit 11 is hollow truncated cone-shaped, in cylinder 6, be contained in two clutch blocks 9 of 11 of forward propelling unit 5 and subtend propelling units, the cross section of clutch block 9 is half elliptic, be contained in 4 interior spline reversed columns 8 of radial hole of two clutch blocks 9, be enclosed within axle 1 upper spline reversed column 8 and just respectively, two compression springs 7 between the subtend propelling unit, be stuck in the spring with a tight waist 10 in two clutch blocks, the 9 outside face grooves, one end is fixed on rope 13 on cylinder 6 outside faces with screw, be fixed on the weight 14 of rope 13 other ends, at the falling direction energy of weight 14 and the gravity cylinder body of locating 28, be fixed on the spring 30 on gravity cylinder body 28 inner bottom surfaces, be fixed on the piston 29 of spring 30 upper ends at gravity cylinder body 28 inner bottom surfaces, stretch out the piston rod 32 that gravity cylinder body 28 upper walls can contact with weight 14 with piston 29 upper end that is connected as a single entity, the three-way pipe 31 that one go side is communicated with gravity cylinder body 28 bottoms, the driving wheel brake cylinder casing 40 that is communicated with two go sides of three-way pipe 31, piston 41 in driving wheel brake cylinder casing 40, the lower end is fixed on the piston 41, the piston rod 42 of driving wheel brake cylinder casing 40 upper walls is stretched out in the upper end, in driving wheel brake body 40, be enclosed within the spring 43 on the piston rod 42, its brake lever can with the driving wheel bag of end in contact on the piston rod 42 device 2 of stopping, the pipe 39 that is communicated with gravity cylinder body 28, be connected on the reverse check valve 33 on the pipe 39, be connected on the forward check valve 34 on three-way pipe 31 3 go sides, the follower brake cylinder casing 35 that is communicated with pipe 39 other ends and forward check valve 34, piston 36 in follower brake cylinder casing 35, on being connected as a single entity, lower end and piston 36 stretch out the piston rod 38 of follower brake cylinder casing 35 upper walls, in follower brake cylinder casing 35, be enclosed within the spring 37 on the piston rod 38, the circular arc brake lever 46 of end in contact on one end and the piston rod 38, be contained in the guide plate 47 which is provided with two holes on the frame, be contained in two double-screw bolts 48 in 47 liang of holes of guide plate, be fixed on the connecting panel 49 that two double-screw bolts, 48 upper ends can contact with brake lever 46, below guide plate 47, be fixed on the tooth bar 50 of two double-screw bolts, 48 lower ends, be enclosed within the spring 51 on the double-screw bolt 48 of 47 of connecting panel 49 and guide plates.

In use, lifting motor Magnetic force tracting device is worked, and will hold to make bar and kayser wheel free, and motor rotates shift fork by gear, because the shock damping action of resistance spring and resistance ball, make the forward propelling unit in a period of time, can not rotate, so shift fork rotates and to force the forward propelling unit to slide left, then clutch block just, under the angle of rake synergy of subtend, radially slide, clutch block and inner wall of rotary drum are coincide, thereby make the rotation of gear drive the cylinder rotation, weight is raised up.Lifting motor Magnetic force tracting device quits work, hold and make the bar draw-in groove be stuck on the kayser wheel, when wind-force reaches certain value, centrifugal club makes the back of the body push away batter post and moves up, make impact bar protruding, make bar move right thereby make to hold, hold and make bar draw-in groove and kayser wheel free, weight falls, pound on the piston rod of gravity cylinder, make liquid in the gravity cylinder body in three-way pipe flows into the driving wheel brake cylinder casing, piston rod makes the driving wheel bag device braking driving wheel of stopping, behind the braking driving wheel, the forward one-way valve opens, the piston rod of follower brake cylinder is depressed tooth bar by brake lever, is stuck on the gear of follower, thereby realizes safety arrestment reposefully step by step.Crane is in a safe condition.

Claims

1, the automatic wind prevention braking machine of a kind of crane, comprise vertical shaft (15), activity is contained in the casing (16) on the vertical shaft (15), be fixed on wind bowl (17) on the casing (16) by connecting rod, be hinged on the centrifugal club (20) on the casing (16), be fixed on the centrifugal globe (21) of centrifugal club (20) one ends, being contained in vertical shaft (15) in casing (16) goes up and centrifugal club (20) other end bonded assembly core frame (18), in casing (16), be contained in the back of the body that vertical shaft (15) is gone up and core frame flexibly connects and push away batter post (19), activity is contained in the last end of casing (16) and pushes away the impact bar (22) that batter post (19) contacts with the back of the body, be enclosed within the spring (23) on the impact bar (22), be fixed on the batting (24) of impact bar (22) other end, it is characterized in that also comprising that being contained on the support end can contact with batting (24), which is provided with holding of draw-in groove and make bar (25), can with hold the draw-in groove ingear kayser wheel (12) that makes bar (25), one end is fixed on the cylinder (6) on the kayser wheel (12), an end stretches out the axle (1) that kayser wheel (12) other end stretches out cylinder (6) in cylinder (6), activity is contained in the shift fork (4) that stretches out cylinder (6) end on the axle (1), be fixed on the gear (3) on the shift fork (4), activity is contained on the axle (1), the screw thread of one end and shift fork (4) bonded assembly forward propelling unit (5), be contained in the axle (1) radial hole in resistance spring (44), the resistance ball (45) that contacts with the inner diameter wall of resistance spring (44) and forward propelling unit (5), activity is contained in the subtend propelling unit (11) that axle (1) is gone up kayser wheel (12) end, in cylinder (6), be contained in the clutch block (9) between forward propelling unit (5) and subtend propelling unit (11), be contained in the interior spline reversed column (8) of radial hole of clutch block (9), be enclosed within axle (1) upper spline reversed column (8) and just respectively, compression spring between the subtend propelling unit (7), be contained in the spring with a tight waist (10) in clutch block (9) the outside face groove, one end is fixed on the rope (13) on cylinder (6) outside face, be fixed on the weight (14) of rope (13) other end, at the falling direction energy of weight (14) and the gravity cylinder body of locating (28), be fixed on the spring (30) on gravity cylinder body (28) inner bottom surface, at the piston (29) of gravity cylinder body (28) internal fixation on spring (30), stretch out the piston rod (32) that can contact of gravity cylinder body (28) upper wall with piston (29) upper end that is connected as a single entity with weight (14), the three-way pipe (31) that one go side is communicated with gravity cylinder body (28), the driving wheel brake cylinder casing (40) that is communicated with three-way pipe (31) two go sides, on the piston (41) in driving wheel brake cylinder casing (40), one end is fixed on the piston (41), one end stretches out the piston rod (42) of driving wheel brake cylinder casing (40) upper wall, in driving wheel brake cylinder casing (40), be enclosed within the spring (43) on the piston rod (42), its brake lever can with the driving wheel bag that piston rod (42) the is gone up end in contact device (2) of stopping, the pipe (39) that is communicated with gravity cylinder body (28), be connected on the reverse check valve (33) on the pipe (39), be connected on the forward check valve (34) on three-way pipe (31) three go sides, the follower brake cylinder casing (35) that is communicated with pipe (39) other end and forward check valve (34), piston (36) in follower brake cylinder casing (35), one end and piston (36) end that is connected as a single entity stretches out the piston rod (38) of follower brake cylinder casing (35) upper wall, in follower brake cylinder casing (35), be enclosed within the spring (37) on the piston rod (38), the brake lever (46) that one end contacts with piston rod (38), be contained in the guide plate (47) which is provided with the hole on the frame, be contained in the double-screw bolt (48) in guide plate (47) hole, be fixed on the connecting panel (49) that double-screw bolt (48) upper end can contact with brake lever (46), be fixed on the tooth bar (50) of double-screw bolt (48) lower end in guide plate (47) below, be enclosed within the spring (51) on the double-screw bolt (48) between connecting panel (49) and guide plate (47).

2, the automatic wind prevention braking machine of crane according to claim 1 is characterized in that forward propelling unit (5) is hollow truncated cone-shaped, and the hollow periphery in round platform platform bottom surface is provided with a threaded tubular projection.

3, the automatic wind prevention braking machine of crane according to claim 1 is characterized in that subtend propelling unit (11) is hollow truncated cone-shaped.

4, the automatic wind prevention braking machine of crane according to claim 1 is characterized in that the cross section of clutch block (9) is half elliptic.