CN201040674Y

CN201040674Y - Safety pliers for guide rope

Info

Publication number: CN201040674Y
Application number: CNU2007200901681U
Authority: CN
Inventors: 崔文才
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-27
Filing date: 2007-04-27
Publication date: 2008-03-26
Anticipated expiration: 2017-04-27

Abstract

The utility model discloses a dragline safety clamp, consisting of a U-shaped drawing ear (1), an upper positioning coupling wheel (2), a bottom plate (3), fixed conical blocks (4), a chute plate (5), sliding conical shim blocks (6), a drawing plate (7), a drawing shaft (8), a drawing rod (10), an adjustable eccentric shaft (11), a regulating screw (12), a set screw (13), and a fixing bolt (14). The U-shaped drawing ear is connected with the drawing rod by bolts, the adjustable eccentric shaft is passed through the bottom plate and fixed on the upper beam of the lift box (22), which is coordinated and connected with the upper positioning coupling wheel, the drawing plate is connected with the drawing rod. The two fixed symmetric sliding conical shim blocks are connected with the drawing shaft under the constraint of the chute plate, which is also connected with the drawing plate by the fastening of the set screw; the two fixed conical blocks are fixed on the bottom plate via the regulating screw; the lower frame of the lift box is provided with a lower positioning coupling wheel (23), the safety clamp can be installed on the two sides of the lift box through the adjustable eccentric shaft and the fixing bolt, the dragline passes through the upper and the lower positioning coupling wheels. The utility model is simple in structure, safe and reliable.

Description

The dragline safety tongs

Technical field

The utility model belongs to the building hoist technical field, especially relates to a kind of dragline safety tongs, as installing as the fall arrest braking (brake) of built-in building hoist of the building operation of guide rail or cage with steel rope.

Background technology

At present, in the construction trade field, the vertical transport facility that adopted in special structure engineering construction have guide rope type building hoist, cage etc., using more is the native cage of a kind of enterprise self manufacture, this native cage is different, and the welding production quality differs, and safety device is not set; Though what have has installed homemade falling proof device additional, but because design is unreasonable, the requirement of manufacture craft out of reach can not reach the purpose of fall arrest, bring dire consequences off one's guard to the operator easily on the contrary, the cage falling accident happens occasionally in the concrete chimney construction.But in special structure engineering construction, this type of guide rope type cage or guide rope type building hoist are indispensable again.

Summary of the invention

For overcoming the deficiencies in the prior art, the purpose of this utility model provides a kind of dragline safety tongs, it is mainly used in special structure engineering such as the concrete chimney construction, on the cage or guide rope type building hoist of steel rope as dragline, lose at derrick line under the situation of traction, automatically steel rope is locked, be braking (brake) fender guard that prevents cage or elevator falls; Its reasonable in design, processing and fabricating is simple, safe and reliable, is a kind of completely new product of Environmental Safety.

For achieving the above object, the utility model adopts following technical scheme:

Described dragline safety tongs, its by U-shaped lift ear, go up the location to wheel, base plate, fixedly circular cone, coulisse, slip taper voussoir, lift plate, lift axle, lifting rod, adjustable eccentric axle, accent thread, jackscrew and bolt of rear end plate form, center at base plate, U-shaped lifts ear and is connected with lifting rod by bolt, the adjustable eccentric axle passes on the upper beam that base plate is fixed on cab or cage, last location is connected to wheel and adjustable eccentric axle, be positioned at the lifting rod both sides, lift plate and be connected with lifting rod; The sliding cone voussoir of two symmetries is provided with chute, under the constraint of coulisse with lift axle and be connected, again by jackscrew fastening with lift plate and be connected; As the track of sliding cone voussoir, two fixedly circular cone be fixed on the base plate by transferring silk; Cab or cage lower frame are provided with down the location to wheel, and safety tongs is fixedly installed in the both sides of cab or cage by the bolt of rear end plate of all right one way or the other tuningout axle and lower end, and dragline passes upper and lower location to wheel.

Described dragline safety tongs, its location is provided with quantity to the single face of taking turns and can be 2 pairs or 3 pairs.

Described dragline safety tongs, its slip taper voussoir and needle roller fixedly is set between the circular cone.

Described dragline safety tongs, its transmission device is made up of suspension ring, suspension rod, hanger, spring plate, swing arm and lever, two suspension rods, one end is connected with suspension ring, end is " earrings " shape, two suspension rods at an angle, the other end is connected by bearing pin with two hangers respectively; Spring plate is stuck between two hangers, by being bolted on the swing arm frame; Swing arm is fixed on the cab top by the swing arm frame, and the swing arm two ends are connected by bearing pin with an end of two levers, and the other end of two levers lifts ear with the U-shaped of two dragline safety tongss respectively and is connected by bearing pin.

Owing to adopt aforesaid technical scheme, the utlity model has following preceence:

This dragline safety tongs, be mainly used in the construction of special structure engineering such as concrete chimney, on the cage or guide rope type building hoist of steel rope as dragline, be fixedly installed in the both sides of cab or cage, lose at derrick line under the situation of traction,, produce friction lock with steel rope by the displacement of slip taper voussoir, straight only that steel rope is locked, be braking (brake) fender guard that prevents cage or elevator falls; It is simple in structure, parts are few, cost is low, and installation and maintenance are simply quick, and use do not wear and tear, safe and reliable, and noiseless, is a kind of completely new product of Environmental Safety.

Description of drawings

Fig. 1 is the utility model dragline safety tongs structural representation;

Fig. 2 is the utility model dragline safety tongs sectional view;

Fig. 3 is the utility model dragline safety tongs scheme of installation;

Fig. 4 is transmission device release position structural representations;

Fig. 5 is a transmission device locking state scheme drawing;

Among the figure: 1-U shape lifts ear; The last location of 2-is to wheel; The 3-base plate; 4-is circular cone fixedly; The 5-coulisse; 6-slip taper voussoir; 7-lifts plate; 8-lifts axle; The 9-needle roller; The 10-lifting rod; 11-adjustable eccentric axle; 12-transfers silk; The 13-jackscrew; The 14-bolt of rear end plate; The 15-suspension ring; The 16-suspension rod; The 17-hanger; The 18-spring plate; The 19-swing arm; The 20-lever; The 21-dragline; The 22-cab; 23-locatees wheel down.

The specific embodiment

As Fig. 1,2, shown in 3, this dragline safety tongs, it lifts ear (1) by U-shaped, last location is to wheel (2), base plate (3), fixing circular cone (4), coulisse (5), slip taper voussoir (6), lift plate (7), lift axle (8), lifting rod (10), adjustable eccentric axle (11), transfer silk (12), jackscrew (13) and bolt of rear end plate (14) are formed, center in base plate (3), U-shaped lifts ear (1) and is connected with lifting rod (10) by bolt, adjustable eccentric axle (11) passes on the upper beam that base plate (3) is fixed on cab (22) or cage, last location is connected to wheel (2) and adjustable eccentric axle (11), be positioned at lifting rod (10) both sides, lift plate (7) and be connected with lifting rod (10); The sliding cone voussoir (6) of two symmetries is provided with chute, under the constraint of coulisse (5) with lift axle (8) and be connected, again by jackscrew (13) fastening with lift plate (7) and be connected; Track as sliding cone voussoir (6), two fixedly circular cone (4) be fixed on the base plate (3) by transferring silk (12), adjust silk (12) and can make fixedly circular cone (4) displacement, change two is the spacing of circular cone fixedly, can make steel rope and sliding cone voussoir (6) reach the optimal control distance; Cab (22) or cage lower frame are provided with down the location to wheel (23), safety tongs is fixedly installed in the both sides of cab (22) or cage by the bolt of rear end plate (14) of all right one way or the other tuningout axle (11) and lower end, dragline passes upper and lower location to wheel (2,23), dragline is in keep with upper and lower location to taking turns position in line.

Described dragline safety tongs, its slip taper voussoir (6) and needle roller (9) fixedly is set between the circular cone (4) can reduce the friction between the two.

Upper and lower location is precisely moved along direction initialization wheel (2,23) control dragline, and dragline is not rubbed with slip taper voussoir (6), adjusts adjustable eccentric axle (11) and can change the spacing of last two location to wheel (2), reaches the purpose of constraint dragline.

As shown in Fig. 4,5, this dragline safety tongs, its transmission device is made up of suspension ring (15), suspension rod (16), hanger (17), spring plate (18), swing arm (19) and lever (20), two suspension rods (16) one ends are connected with suspension ring (15), end is " earrings " shape, two suspension rods at an angle, the other end is connected by bearing pin with two hangers (17) respectively; Spring plate (18) is stuck between two hangers (17), by being bolted on the swing arm frame; Swing arm (19) is fixed on cab (22) top by the swing arm frame, and the swing arm two ends are connected by bearing pin with an end of two levers (20), and the other end of two levers (20) lifts ear (1) with the U-shaped of two dragline safety tongss respectively and is connected by bearing pin.

During construction, as shown in Figure 4, hoist rope applies to upper pulling force on suspension ring (15), and suspension rod this moment (16) is simultaneously stressed, and hanger (17), swing arm (19) produce displacement under the pulling force of suspension rod (16), the displacement of swing arm (19) drives lever (20) displacement, exerting pressure to spring plate (18) simultaneously, is next action power storage, and the slip taper voussoir (6) of dragline safety tongs is in below, as shown in Figure 1, this moment, the dragline safety tongs was in release position.

Under the situation of the disconnected rope of hoist rope, be applied to disappearing on the suspension ring (15) to upper pulling force, as shown in Figure 5, the energy that is stored in this moment on the spring plate (18) discharges, reduction of pressure effect bottom offset and the displacement of drive lever (20) that swing arm (19) discharges at spring plate, the U-shaped that the displacement of lever (20) drives the dragline safety tongs lifts ear (1) displacement, U-shaped lifts ear (1) displacement and drives lifting rod (10), lift plate (7), lift axle (8) displacement, the displacement that lifts axle (8) simultaneously drives slip taper voussoir (6) to top offset, produce friction locking with steel rope, straight only that steel rope is locked, finish entire work process.

The dragline safety tongs can be set to two cover or quadruplets as required, and the dragline safety tongs is fixed on the cab both sides in the present embodiment, and cab or cage load carrying ability are made as quadruplet during greater than 1t; When being used as special structure engineering load carrying ability, be made as two covers less than 1t.

Claims

1. dragline safety tongs is characterized in that: its by U-shaped lift ear (1), go up the location to wheel (2), base plate (3), fixedly circular cone (4), coulisse (5), slip taper voussoir (6), lift plate (7), lift axle (8), a lifting rod (10), adjustable eccentric axle (11), transfer thread (12), jackscrew (13) and a bolt of rear end plate (14) to form; Center in base plate (3), U-shaped lifts ear (1) and is connected with lifting rod (10) by bolt, adjustable eccentric axle (11) passes on the upper beam that base plate (3) is fixed on cab (22) or cage, last location is connected to wheel (2) and adjustable eccentric axle (11), be positioned at lifting rod (10) both sides, lift plate (7) and be connected with lifting rod (10); The sliding cone voussoir (6) of two symmetries is provided with chute, under the constraint of coulisse (5) with lift axle (8) and be connected, again by jackscrew (13) fastening with lift plate (7) and be connected; As the track of sliding cone voussoir (6), two fixedly circular cone (4) be fixed on the base plate (3) by transferring silk (12); Cab (22) or cage lower frame are provided with down the location to wheel (23), and safety tongs is fixedly installed in the both sides of cab (22) or cage by the bolt of rear end plate (14) of all right one way or the other tuningout axle (11) and lower end, and dragline passes upper and lower location to taking turns (2,23).

2. dragline safety tongs as claimed in claim 1 is characterized in that: its location is provided with quantity to the single face of taking turns and can be 2 pairs or 3 pairs.

3. dragline safety tongs as claimed in claim 1 is characterized in that: its slip taper voussoir (6) and needle roller (9) fixedly is set between the circular cone (4).

4. dragline safety tongs as claimed in claim 1, it is characterized in that: its transmission device is made up of suspension ring (15), suspension rod (16), hanger (17), spring plate (18), swing arm (19) and lever (20), two suspension rods (16) one ends are connected with suspension ring (15), end is " earrings " shape, two suspension rods at an angle, the other end is connected by bearing pin with two hangers (17) respectively; Spring plate (18) is stuck between two hangers (17), by being bolted on the swing arm frame; Swing arm (19) is fixed on cab (22) top by the swing arm frame, and the swing arm two ends are connected by bearing pin with an end of two levers (20), and the other end of two levers (20) lifts ear (1) with the U-shaped of two dragline safety tongss respectively and is connected by bearing pin.