CN102849434B - Full-section belt breakage protecting device for belt-type conveyer - Google Patents

Abstract

A full-section broken belt protection device for a belt conveyor, including a frame, an upper catcher, a lower catcher, and a wedge-shaped self-locking assembly; the two sides of the frame are symmetrical, and the upper catcher and the lower catcher are horizontal Spans the sides of the frame with the uprunning belt passing between the upper brake beam and the upper catch on the frame and the downrunning belt passing between the lower brake beam and the lower catcher on the frame . The upper catcher and the lower catcher are always in the action trend, and the turning moment of the brake arm is formed by the spring tension, which provides power for the upper catcher, and the action of the lower catcher is linked; the catcher and the belt are in full-section contact , the capture area is large, and will not cause the belt to tear; when the upper catcher moves, the material is thrown out of the belt to avoid secondary damage to the belt caused by hard materials; the capture process of the upper belt is self-locking step by step, and the belt is The impact is small, to avoid belt impact breakage. It can be triggered automatically without power source drive, economical and reasonable, easy to maintain, and the capture action is timely and reliable.

Description

A full-section broken belt protection device for a belt conveyor

technical field

The invention relates to a full-section broken belt protection device for a belt conveyor, and is especially suitable for a belt conveyor for transporting large-volume bulk materials.

Background technique

The currently used broken belt protection devices have the following problems: most of them rely on an additional power source to drive, requiring the equipment to be in operation all the time, with high energy consumption and heavy wear; some of them use backstop rollers to achieve automatic triggering, which has the problem of unreliable triggering; At the same time, when many capture devices complete the capture, the belt and the capture device are in line contact or only capture the edge of the belt, which is easy to cause the belt to tear; Bulk material is pressed into the catcher, and the hard material will also cause secondary damage to the belt; especially when the catcher moves, the belt will be locked immediately, and the tension of the belt will form an impact, which is also a common cause of secondary breakage of the belt.

Contents of the invention

Technical problem: The purpose of this invention is to overcome the deficiencies in the prior art and provide a full-section broken belt protection device for belt conveyors with simple structure, reliable operation, economical and practical.

Technical solution: The full-section broken belt protection device for belt conveyors of the present invention includes a symmetrical frame on both sides consisting of a square frame and a triangular frame connected to the square frame. The triangular frames on both sides of the frame span across There is an upper catcher, and a lower catcher spans between the square frames on both sides of the frame, and a wedge-shaped self-locking assembly is provided under the upper brake beam spanning between the tops of the triangular frames of the frame; The catcher includes a plurality of wedge-shaped bodies, a pair of bearing seats, a pair of backstop bearings, a rotating shaft, a pair of short shafts, a power arm, a brake arm, a rotating shaft sleeve, and a roller, wherein the rotating shaft sleeve is sleeved on the rotating shaft, and the power The arm and the brake arm are welded on the outside of the shaft sleeve, and the angle between the power arm and the brake arm in the vertical plane is close to the slope of the ramp on the conveyor; a pair of bearing seats are installed on the brake arm, and the axis of the bearing seat Parallel to the axis of the rotating shaft; a pair of backstop bearings are set in a pair of bearing seats, and the shafts at both ends of the roller are set in a pair of backstop bearings; multiple wedges are set at the end of the brake arm, and a pair of short shafts are respectively Set in the two casings at the end of the power arm; the lower catcher includes a linkage arm, a catch arm, a lower rotating shaft sleeve, a lower rotating shaft, and a convex wedge, wherein the lower rotating shaft sleeve is sleeved on the lower rotating shaft , the linkage arm and the grabbing arm are respectively welded on both sides of the lower shaft sleeve, and the convex wedge is installed at the end of the grabbing arm; the wedge-shaped self-locking assembly includes a lower wedge, an upper wedge, side guards, Ball and ball track, wherein the side guards are fixed on both sides of the upper wedge, the lower end of the side guard forms an L-shaped space, the ball track is fixed on the side of the lower wedge, the balls are arranged between the side guard and the ball track, and the lower wedge Through the ball support sandwiched between the L-shaped space and the ball raceway, the inclination angles of the upper wedge and the lower wedge are equal, and the two slopes are opposite, and the movement of the lower wedge on the ball forms a wedge-shaped self-locking or locking with the upper wedge. unlock.

The number of the plurality of wedges is 2-5; the wedge surfaces of the plurality of wedges are attached with rubber with a coefficient of friction with the belt not less than 0.5.

Beneficial effects: the full-section broken belt protection device for belt conveyors of the present invention can be triggered automatically without relying on power source drive, economical and reasonable, and easy to maintain; The response to the belt situation is fast and direct, and the catcher adopts the wedge-shaped self-locking principle, so the catch action is timely and the effect is reliable. The bearing brakes to form a large friction force between the belt and the roller. These three factors work together to make the upper catcher move, and the reliability is stronger; the belt and the catcher are in full-section contact, and the catch area is large. It will not cause the belt to tear; when the upper catcher is in action, the material will be thrown out of the belt to avoid secondary damage to the belt caused by hard materials; the catch process of the upper belt is self-locking step by step, and the impact on the belt is small. Avoid belt impact breakage.

Description of drawings

Fig. 1 is the front structural diagram of the present invention;

Fig. 2 is a frame structure diagram of the present invention;

Fig. 3 is the structural diagram of the upper catcher of the present invention;

Fig. 4 is the longitudinal sectional view of wedge-shaped self-locking assembly of the present invention;

Figure 5 is a cross-sectional view of the wedge-shaped self-locking assembly of the present invention;

Fig. 6 is a side perspective view before braking of the present invention;

Figure 7 is a side perspective view of the invention after braking.

In the figure: 1—frame, 2—upper catcher, 3—link arm, 4—convex wedge, 5—spring, 6—wedge self-locking assembly, 7—lower shaft sleeve, 8—lower shaft . -3—upper brake beam, 1-4—inclined beam, 1-5—longitudinal beam, 1-6—beam, 1-7—side plate, 1-8—lower brake beam, 2-1—wedge , 2-2—bearing seat, 2-3—backstop bearing, 2-4—rotating shaft, 2-5—power arm, 2-6—short shaft, 2-7—rotating shaft sleeve, 2-8—brake Arm, 2-9—roller, 6-1—lower wedge, 6-2—upper wedge, 6-3—side guard, 6-4—ball, 6-5—ball track.

Detailed ways

An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the full-section broken belt protection device for belt conveyor of the present invention includes a frame 1, an upper catcher 2, a lower catcher, a wedge-shaped Self-locking assembly 6; frame 1 is a bilaterally symmetrical structure consisting of a square frame and a triangular frame connected to the square frame, the upper catcher 2 is arranged between the triangular frames on both sides of the frame 1, and the lower catcher It is arranged between the square frames on both sides of the rack 1.

The frame 1 specifically includes a pair of rear columns 1-1, a pair of front columns 1-2, an upper brake beam 1-3, a lower brake beam 1-8, a pair of inclined beams 1-4 , four longitudinal beams 1-5, two cross beams 1-6, a pair of side panels 1-7; wherein the rear column 1-1 is higher than the front column 1-2, and the top of a pair of rear column 1-1 straddles the An upper brake beam 1-3, four longitudinal beams 1-5 are welded between the middle and lower parts and the top and bottom of the front pillars 1-2 respectively, and a crossbeam 1 is welded between the tops of a pair of front pillars 1-2 -6, a lower brake beam 1-8 is straddled between the lower ends, a beam 1-6 is welded between the lower ends of a pair of rear columns 1-1, the tops of a pair of rear columns 1-1 and a pair of front A pair of inclined beams 1-4 are welded between the tops of the columns 1-2; a pair of side plates 1-7 are fixed in the frame formed by the columns and longitudinal beams, and holes for fixing the lower rotating shaft 8 are left on the side plates 1-7 ;

The upper catcher 2 includes a plurality of wedges 2-1, a pair of bearing housings 2-2, a pair of backstop bearings 2-3, a rotating shaft 2-4, a short shaft 2-6, a power arm 2-5, Brake arm 2-8, rotating shaft sleeve 2-7, cylinder 2-9. Wherein the rotating shaft sleeve 2-7 is worn on the rotating shaft 2-4, the power arm 2-5 and the brake arm 2-8 are welded on the outside of the rotating shaft sleeve 2-7, and the power arm 2-5 and the brake arm 2- The included angle of 8 in the vertical plane is roughly equal to the slope of the upward ramp; a pair of bearing blocks 2-2 are installed on the brake arm 2-8, and their axes coincide and are parallel to the axis of the rotating shaft 2-4; The stop bearing 2-3 is installed in the pair of bearing housings 2-2, and the shaft of the drum 2-9 is installed in the pair of backstop bearings 2-3; at the other end of the brake arm 2-8, install There are multiple wedge-shaped bodies 2-1, and the slope material of the wedge-shaped bodies 2-1 is rubber with a high friction coefficient; a pair of short shafts 2-6 are respectively installed in two bushings at the end of the power arm 2-5;

Described lower catcher comprises linkage arm 3, catches arm 9, lower rotating shaft sleeve 7, lower rotating shaft 8, convex arc surface wedge-shaped body 4, and lower rotating shaft sleeve 7 wears on the lower rotating shaft 8, and linkage arm 3 and catches The catching arms 9 are respectively welded on both sides of the lower rotating shaft sleeve 7, and the convex wedge 4 is installed at the end of the catching arms 9;

The wedge-shaped self-locking assembly 6 includes a lower wedge 6-1, an upper wedge 6-2, a side guard 6-3, a ball 6-4, and a ball track 6-5, wherein the side guard 6-3 is fixed on On both sides of the upper wedge 6-2, the lower end forms an L-shaped space, the ball track 6-5 is fixed on the side of the lower wedge 6-1, and the lower wedge 6-1 passes through the L-shaped space and the ball track 6-5 Between the ball 6-4 support, the wedge surface inclination angle of the upper wedge 6-2 and the lower wedge 6-1 is equal, and the two slopes are opposite, and the movement of the lower wedge 6-1 on the ball 6-4 can be compared with the upper wedge 6-1. Wedge body 6-2 forms wedge-shaped self-locking or unlocking.

As shown in Figure 6, the frame 1 is installed along the direction 13 of the upward ramp of the conveyor, the upper belt 11 passes between the upper brake beam 1-3 and the upper catcher 2, and the lower belt 10 is grasped from the bottom. Pass between the catcher and the lower brake beam 1-8. The wedge-shaped self-locking assembly 6 is fixed on the lower surface of the upper brake beam 1-3 of the frame 1. The rotating shaft 2-4 of the upper catcher 2 is installed on the rear column 1-1 of the frame 1, along the upward movement direction 13, the brake arm 2-8 is in front, the power arm 2-5 is behind, and is positioned at the tension The upper transport belt 11 below. The short shafts 2-6 at the ends of the power arms 2-5 are each equipped with two stretched springs 5, and the other ends of the springs 5 are connected to the beam 1-6 of the frame 1. Due to the moment formed by the tension of the spring 5, the brake arm 2-8 has a tendency to overturn along the turning direction 12, but under the tension of the upper belt 11 and the gravity of the transported material, the upper belt 11 is pressed against the brake arm. Rollers 2-9 on 2-8. As the upper belt 11 runs along the running direction 13, the cylinders 2-9 can rotate along with the upper belt 11 without affecting the upper belt 11. The slope of the wedge-shaped body 2-1 at the top of the brake arm 2-8 can ensure that the slope is roughly parallel to the lower plane of the upper brake beam 1-3 when turning over to the braking position. The lower rotating shaft 8 of the lower catcher is fixed on a pair of side plates 1-7 of the frame 1, and one end of its linkage arm 3 is pressed below the brake arm 2-8, so that the catch arm 9 is lifted high to avoid The convex arc wedge-shaped body 4 on the catching arm 9 contacts the lower transport belt 10 .

When the belt breaks or the belt loses tension, the upper belt 11 is not enough to suppress the overturning moment formed by the tension of the spring 5 on the upper catcher 2, and the moment of gravity of the catcher arm 9 relative to the lower rotating shaft 7 passes through the linkage arm 3 Passed on the brake arm 2-8, and when the upward movement belt 11 has a downward trend, the backstop bearing 2-3 brakes to form a large friction force between the belt and the drum 2-9. These three factors combine to cause the upper grip The catcher 2 is turned over along the turning direction 12 so that the brake arm 2-8 jacks up the belt, and the material on the belt 11 is scattered under the action of gravity simultaneously. Along with the overturning of upper catcher 2, upper transport belt 11 is pressed between the lower wedge-shaped body 6-1 of wedge-shaped self-locking assembly 6 and the wedge-shaped body 2-1 on the brake arm 2-8. The belt 11 goes down, driving the lower wedge body 6-1 to move along the ball track 6-5 in the side guard plate 6-3, forming a wedge-shaped self-locking mechanical condition with the upper wedge body 6-2, and completing the alignment of the upper belt. 11 reliable brakes. In this process, because it is self-locking step by step, the impact on the upper belt 11 is less, which avoids the impact and fracture of the upper belt 11. While the upper catcher 2 was overturned, the linkage arm 3 of the lower catcher suppressed by the brake arm 2-8 was released, and under the force of gravity of the catch arm 9 and the wedge-shaped body 4, the lower trigger Turning over along the triggering direction 14, the lower transport belt 10 is pressed between the convex wedge-shaped body 4 and the lower brake beam 1-8, which also forms a self-locking condition, and completes the reliable braking of the lower transport belt 11.

Claims (1)

1. a belt conveyer full-section belt fender guard, comprise by quadra and be connected to the monosymmetric frame (1) that the triangle-frame on quadra forms, it is characterized in that: between the both sides triangle-frame of described frame (1), be crossed with catching device (2), between the both sides quadra of frame (1), be crossed with lower catching device, between the triangle-frame top, both sides of described frame (1) across upper brake beam have wedge shape from lock set, described upper catching device (2) comprises multiple sphenoids (2-1), pair of bearing (2-2), a pair of check bearing (2-3), rotating shaft (2-4), a pair of minor axis (2-6), power arm (2-5), brake control lever (2-8), shaft sleeve (2-7), cylinder (2-9), wherein shaft sleeve (2-7) is set in rotating shaft (2-4), power arm (2-5) and brake control lever (2-8) are welded on shaft sleeve (2-7) outside, the inclination angle in the upper fortune ramp of angle in perpendicular of power arm (2-5) and brake control lever (2-8) and conveyer is roughly equal, pair of bearing (2-2) is arranged on brake control lever (2-8), the axis of bearing seat (2-2) is parallel with the axis of rotating shaft (2-4), a pair of check bearing (2-3) is located in pair of bearing (2-2), and cylinder (2-9) two end axles is located in a pair of check bearing (2-3), multiple sphenoids (2-1) are located at the end of brake control lever (2-8), and a pair of minor axis (2-6) is located at respectively in two sleeve pipes of power arm (2-5) end, described lower catching device comprises transmission arm (3), arrests arm (9), lower rotary shaft sleeve (7), lower rotary shaft (8), convex globoidal sphenoid (4), wherein lower rotary shaft sleeve (7) is set on lower rotary shaft (8), transmission arm (3) and arrest arm (9) and be welded on respectively the both sides of lower rotary shaft sleeve (7), convex globoidal sphenoid (4) is arranged on the end of arresting arm (9), described wedge shape comprises lower sphenoid (6-1) from lock set (6), upper sphenoid (6-2), side guard plate (6-3), ball (6-4), ball orbit (6-5), wherein side guard plate (6-3) is fixed on sphenoid (6-2) both sides, side guard plate (6-3) lower end forms L shaped space, ball orbit (6-5) is fixed on lower sphenoid (6-1) side, ball (6-4) is located between side guard plate (6-3) and ball orbit (6-5), lower sphenoid (6-1) is by being clipped in ball (6-4) supporting between L shaped space and ball road (6-5), the inclination angle of inclined plane of upper sphenoid (6-2) and lower sphenoid (6-1) equates, two inclined-planes are relative, motion by lower sphenoid (6-1) on ball (6-4) and upper sphenoid (6-2) form wedge shape self-locking or release.

2. belt conveyer according to claim 1 full-section belt fender guard, is characterized in that: described multiple sphenoids (2-1) are 2-5.

3. belt conveyer according to claim 1 and 2 full-section belt fender guard, is characterized in that: the wedge surface of described multiple sphenoids (2-1) adheres to the rubber that is not less than 0.5 with belt friction coefficient.