CN216302316U - Full-automatic passive mechanical linkage deviation correcting device of rubber belt conveyor - Google Patents

Abstract

The utility model discloses a full-automatic passive mechanical linkage deviation correcting device of a rubber belt conveyor, which comprises a frame-shaped bottom frame, a friction wheel and a deviation correcting carrier roller group, wherein the friction wheel is arranged on the frame-shaped bottom frame; the method is characterized in that: the carrier rollers of the deviation rectifying carrier roller group respectively and independently use a small carrier roller frame, and the deviation rectifying carrier roller group also comprises a gear speed reducing mechanism, a screw rod movement mechanism and a rocker linkage mechanism; the belt is installed at a position where the belt is easy to deviate, the belt and a friction wheel on one side of the deviation generate friction to rotate to drive the speed reducing mechanism, the screw rod movement mechanism and the rocker linkage mechanism, so that the carrier rollers of the deviation correcting carrier roller group simultaneously rotate inwards to form a certain angle with the advancing direction of the belt to form friction force, and the belt returns to the original normal position under the oblique guidance of the deviation correcting carrier rollers after being blocked.

Description

Full-automatic passive mechanical linkage deviation correcting device of rubber belt conveyor

Technical Field

The utility model relates to a rubber belt conveying machine, in particular to a deviation correcting device of a rubber belt machine.

Background

The rubber belt conveyer, called rubber belt conveyer or belt conveyer for short, is mainly formed from conveying belt (rubber belt), supporting roller and machine frame, driving device, tension device and brake device. The continuous bulk material conveying machine is widely applied to industries such as coal mines, power plants, ports, cement plants, coal chemical industry and the like, the most common fault during operation is a conveying belt deviation fault, and particularly, an upper belt (a bearing belt) is easy to deviate. The serious person causes accidents such as tearing and breaking the belt, friction, fire, emergency stop and the like. The reasons for the deviation of the belt conveyor are many, such as: the falling point of the material is not in the middle of the section of the rubber belt, the head, the tail, the guide roller, the middle frame and the like are not installed correctly, the joint of the rubber belt is not perpendicular to the central line of the rubber belt, the tension in the rubber belt is not uniform, the carrier roller is not flexible to run, the abrasion of the roller is inconsistent, and the deviation of the rubber belt can be caused by the factors of the material existing between the roller and the rubber belt.

Due to the reasons of the belt conveyor, the deviation cannot be avoided, and only additional facilities capable of avoiding the deviation can be installed to solve the deviation problem. At present, the deviation correcting devices of the rubber belt conveyor are various in types and are in different seasons. The present invention relates to a passive hydraulic automatic deviation-correcting device. For example, the "hydraulic belt machine deviation correcting device" is disclosed in "mining technology" published by volume 36, third phase (7 months 2008) of royal weih and the like. Taking the upper belt (bearing belt) deviation rectifying device of the adhesive tape type conveyor as an example, the device consists of a frame-shaped bottom frame, a friction wheel, a groove-shaped (also called U-shaped) deviation rectifying supporting roller group, a hydraulic pump, a hydraulic cylinder and a valve body program controller; the groove-shaped deviation rectifying carrier roller group is characterized in that three carrier rollers are mounted on a carrier roller frame, two sides of the carrier rollers are symmetrically inclined deviation rectifying rollers, the middle of the carrier rollers is a horizontally arranged deviation rectifying roller, the three carrier rollers are mounted on the same rotatable carrier roller frame, the carrier roller frame is mounted on a longitudinal beam of a frame-shaped underframe through a rotating shaft, a piston rod of a hydraulic cylinder is connected to one end of the carrier roller frame, and the piston rod can push and pull the carrier roller frame to rotate horizontally for a certain angle. The working principle is that when the belt deviates during conveying, the conveying belt deviates to the friction wheel and is in friction contact with the friction wheel, the friction wheel rotates under the action of friction force and drives the oil pump to work, oil pressure of the oil pump enables an oil line to enter the oil cylinder through valve body program control, the oil cylinder is driven to stretch and retract, the push-pull carrier roller frame horizontally rotates by taking the rotating shaft as an axis, a certain angle is formed between the deviation adjusting carrier roller and the running direction of the conveying belt, friction resistance is generated between the deviation adjusting carrier roller and the conveying belt which is deviating, the conveying belt automatically generates deviation correcting force when being subjected to resistance, and the deviation correcting force are balanced and then the conveying belt keeps in a centered normal running state. The automatic deviation correcting device has the advantages of no need of an external power supply, automation, high efficiency and labor cost reduction, and is a popular deviation correcting device in the current market. However, due to the adoption of a hydraulic principle, a hydraulic transmission link is complex, the failure rate of parts is high, particularly, oil leakage occurs, the oil pressure is reduced, a deviation rectifying effect cannot be realized, and great potential safety hazards are caused under the current unattended management mode; the deviation force is not in direct proportion to the driving force of the oil cylinder, so that unnecessary redundant friction is generated between the deviation adjusting carrier roller and the conveying belt, and the conveying belt is easily damaged; the method also has the defects of large initial investment, high cost, large volume, large occupied space and difficult installation; more importantly, the three carrier rollers are arranged on one carrier roller frame, can only rotate at the same angle with the carrier roller frame, and are limited by the carrier roller rotating angle of the carrier roller frame, so that the carrier roller rotating angle is smaller, the deviation adjusting force is smaller, and the deviation adjusting effect cannot be realized in the process of forming an accident.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a full-automatic passive mechanical linkage deviation correcting device which is suitable for correcting the deviation of a belt conveyor used in the industries of coal mines, power plants, ports, cement plants, coal chemical industry and the like, ensures that the belt conveyor stably runs, and is also suitable for correcting the deviation of the belt conveyor used in open-air operation places; the deviation problem of the belt conveyor caused by various reasons such as various parts are not correct, the operation is not flexible, the blanking impact and the load change are large and small, the tension of the inner section of the rubber belt is not uniform can be solved.

The technical scheme is that the full-automatic passive mechanical linkage deviation correcting device of the rubber belt conveyor comprises a frame-shaped bottom frame, a friction wheel and a deviation correcting carrier roller group; the method is characterized in that:

the correcting idler group consists of 2-3 idlers, and two idlers can form a straight correcting idler group for correcting the lower belt of the rubber belt conveyor or a V-shaped correcting idler group for correcting the upper belt of the rubber belt conveyor; more than 3 carrier rollers can form a U-shaped deviation rectifying carrier roller group for rectifying deviation of the upper belt of the rubber belt conveyor; the correcting carrier roller groups are arranged in one group or two groups, wherein the two groups are respectively arranged on the front cross beam and the rear cross beam of the frame type underframe, and the one group is arranged on the front cross beam of the frame type underframe; the carrier rollers are respectively provided with a small carrier roller frame, a downward shaft is fixed at the center of the small carrier roller frame, and the small carrier roller frames are arranged in the shaft holes of the cross beam through the shafts;

the device also comprises a gear speed reducing mechanism, a lead screw motion mechanism and a rocker linkage mechanism;

the two sets of gear reduction mechanisms are symmetrically arranged on two sides of the frame-shaped underframe, the friction wheels are arranged on an input shaft of the gear reduction mechanism and are positioned on two sides of a normally-running conveying belt, and the conveying belt can press the friction wheels to generate friction force to rotate when running off; the power output shafts of the two sets of gear reduction mechanisms are respectively connected with universal joints used for connecting the screw rod movement mechanisms;

the screw rod movement mechanism is characterized in that two nuts are fixed on the other cross beam of the frame-shaped underframe, and matched screw rods are arranged on the two nuts; the lead screw is a hollow lead screw, a spline groove is arranged in a central hole, a spline shaft is respectively arranged at two ends of the lead screw and then connected with the universal joint, so that the power transmission of a lead screw motion mechanism and a gear reduction mechanism is realized; the front section of the spline shaft is required to be a round shaft, and the length of the spline section is equal to the design distance of the lead screw moving back and forth; when the spline shaft drives the lead screw to rotate so as to enable the lead screw to move to a set distance, the lead screw is timely unhooked from the spline hole so as to stop moving, and a round shaft section of the spline shaft is kept connected with the lead screw; the lead screw is also provided with a follower sleeve with a slot through a plane direct-push bearing;

the rocker linkage mechanism is structurally characterized in that a rocker is fixed on a rotating shaft of each small roller frame of a group of deviation rectifying roller sets, all rockers are hinged to a connecting rod together, one rocker extends to a follower sleeve, a shifting fork matched with a slot of the follower sleeve is arranged at the extending end of the rocker, and the shifting fork is inserted into the slot to enable a lead screw to drive the rockers to move together, so that all rollers of the deviation rectifying roller sets rotate inwards along with the lead screw to form a certain angle with the running direction of a conveying belt;

when establishing two sets of bearing roller group of rectifying around, rocker link gear still include: the front and rear groups of small roller frames which correspond to each other are hinged with each other by a push-pull rod, and the hinged point is arranged at the same end of the corresponding small roller frame, so that the two groups of deviation rectifying roller sets are linked;

furthermore, because the two sets of gear reduction mechanisms act on one screw rod together, when the gear reduction mechanism on one side works, the gear reduction mechanism on the other side can be driven to rotate reversely, and in order to reduce unnecessary negative effects, a one-way bearing is arranged on a power output wheel of the gear reduction mechanism, and only a shaft is allowed to rotate but the gear does not rotate; the one-way bearing is a common bearing, can freely rotate in one direction and is locked in the other direction, and is also called as a backstop or an overrunning clutch. Or the power output wheel of the gear speed reducing mechanism is designed into a bicycle flywheel structure.

Further, the reduction ratio of the gear reduction mechanism is (4-6): 1, in order to meet the structural design requirement, the gear reduction mechanism performs two-stage speed reduction by a pair of reduction straight gears and a pair of reduction chain wheels; the specific structure is that the driving gear of the speed reduction straight gear is arranged on the input shaft, the driven straight gear is coaxial with the driving chain wheel of the speed reduction chain wheel, and the driven chain wheel shaft of the speed reduction chain wheel is used as the output shaft of the speed reduction mechanism.

Furthermore, the speed reducing mechanism is sealed in a moisture-proof and corrosion-resistant shell, and the screw rod movement mechanism is sealed in a dust-proof and corrosion-resistant telescopic sleeve so as to adapt to various humid severe environment places, particularly underground coal mines.

Further, the deviation adjusting carrier roller adopts a standard carrier roller of the type according to the type of the rubber belt conveyor.

Furthermore, the circumferential surface (the contact surface with the adhesive tape) of the friction wheel adopts a conical surface.

Furthermore, the detection driving wheel is made of polyurethane.

The operation principle is that at the position where the rubber belt is easy to deviate, the original machine frame is dismantled and the device is replaced, when the rubber belt deviates, the rubber belt generates friction with a friction wheel at the deviating side, and the friction wheel rotates to drive a speed reducing mechanism to work; the speed reducing mechanism transmits amplified power to the spline shaft, the spline shaft and the screw rod rotate together (at the moment, the spline shaft on the other side only idles under the unidirectional action), the screw rod moves back to the side away from the deviation under the action of the screw nut while rotating, so that the follower sleeve on the screw rod pushes the rocker linkage mechanism, the rocker linkage mechanism enables the carrier rollers of the deviation correcting carrier roller group to simultaneously rotate inwards to form a certain reverse angle with the advancing direction of the rubber belt to form friction resistance, the rubber belt generates a return trend under the oblique guidance of the deviation correcting carrier roller after being blocked, if the deviation correcting carrier roller continues to rotate inwards, the larger the rotating angle is, the larger the formed deviation correcting force is, the deviation correcting force and the deviation correcting force are balanced, and the centered normal operation is kept. After normal operation, if the rubber belt deviates to the other side, the rubber belt generates friction with the friction wheel on the other side, the speed reducing mechanism on the other side, the spline shaft and the screw rod rotate together, the screw rod returns, the deviation adjusting carrier roller rotates outwards until the deviation force and the friction force finally reach balance, and the rubber belt keeps normal operation and does not deviate any more.

The utility model is arranged at the position of the rubber belt conveyor which is easy to deviate, and requires the whole device to be stably arranged and reliably operated.

The utility model has the following positive effects:

1. the utility model adopts pure mechanical speed reduction and screw linkage driving, compared with the driving adopting a hydraulic principle, the utility model has the advantages of flexible and accurate deviation adjustment and quick response, and simultaneously solves the potential safety hazard of oil leakage of a hydraulic system.

2. Each carrier roller of the deviation adjusting carrier roller group adopts an independent small carrier roller frame, can rotate independently and is not limited by being integrally installed on the whole rack, the rotating angle is large, the larger the rotating angle is, the larger the formed deviation adjusting force is, the larger the friction force is, the larger the guide angle is, the requirement for balancing the deviation force and the deviation adjusting force can be met, and the conveying belt can automatically maintain the centered running state for a long time.

3. The mechanical principle is adopted, the structure is simple, the volume is small, and the installation is convenient; the machine has reliable operation, low failure rate and obvious deviation rectifying effect; after the installation is correctly in place, the requirement of unattended operation and low maintenance on a working site is met on the premise of ensuring the deviation rectifying effect.

4. The transmission part is totally sealed, so that the device has the characteristics of adaptability to various severe environments, dust prevention, moisture prevention, corrosion resistance and long service life.

5. The friction wheel of the device is made of polyurethane, and the contact surface of the friction wheel and the adhesive tape is designed to be an arc surface, so that the device has the advantages of abrasion resistance, low stress, long service life and no damage to the adhesive tape.

6. The device adopts pure mechanical speed reduction lead screw linkage drive, and compared with the drive adopting a hydraulic principle, the device has the characteristics of flexible and accurate deviation adjustment, quick response and large deviation adjustment moment, and can ensure that an inclined adhesive tape can quickly return to the original position, and simultaneously solve the potential safety hazard of oil leakage of a hydraulic system.

7. The deviation-adjusting roller frame adopts a standard universal roller frame, and the parts of the speed reducing mechanism adopt standard universal design sizes, so that the deviation-adjusting roller frame is simple and convenient to install and maintain, and the deviation-adjusting device support and other parts of the rubber belt conveyor are not required to be changed in the installation process, so that the deviation-adjusting roller frame is convenient to install.

8. The application range is wide, the belt speed of the belt conveyor is within the range of 1.5-5 m/s, the transport capacity is within the range of 100-3500 t/h, the maximum working load is 2000N, and the satisfactory deviation rectifying effect can be achieved when the inclination angle of the conveyor is less than or equal to 18 degrees.

Drawings

FIG. 1 is a schematic perspective view of the construction of example 1, in which arrow A indicates the tape running direction;

FIG. 2 is a front view showing the construction of a grooved deflection correcting carrier roller set according to embodiment 1;

FIG. 3 is a top view of the screw moving mechanism and the rocker linkage mechanism of embodiment 1, in which arrow A indicates the running direction of the adhesive tape and arrow B indicates the off-tracking direction of the adhesive tape;

FIG. 4 is a front view of the gear reduction mechanism and the lead screw moving mechanism of embodiments 1 to 4;

FIG. 5 is a schematic diagram of the offset adjustment in embodiments 1 to 4;

FIG. 6 is a front view showing the structure of an in-line deflection correcting carrier roller set of embodiment 2;

FIG. 7 is a front view showing the construction of a V-shaped deflection correcting carrier roller set of embodiment 3;

FIG. 8 is a top view of the screw motion mechanism and rocker linkage of embodiment 4, showing primarily a single set (one set) of deflection correcting idler sets.

In the figure: 1-frame type underframe, 2-crossbeam, 3-rear groove-shaped deviation rectifying idler group, 3 a-right rear oblique idler frame, 3 b-rear horizontal idler frame, 3 c-left rear oblique idler frame, 4-front groove-shaped deviation rectifying idler group, 4 a-right front oblique idler frame, 4 b-front horizontal idler frame, 4 c-left front oblique idler frame, 5-friction wheel, 5 a-front friction wheel, 5 b-rear friction wheel, 6-gear speed reducing mechanism, 6 a-front speed reducing mechanism, 6 b-rear speed reducing mechanism, 7-push rod, 7 a-right push rod, 7 b-middle push rod, 7 c-left push rod, 8-link mechanism, 8 a-front rocker, 8 b-middle rocker, 8 c-rear rocker, 8 d-link, 9-lead screw, 10-nut, 11-shaft hole, 12-shaft, 13-reduction box, 14 a-driving gear, 14 b-driven gear, 15 a-driving sprocket, 15 b-driven sprocket, 16 a-right spline shaft, 16 b-left spline shaft, 17-universal joint, 18-middle cross beam, 19-plane thrust bearing, 20-follower sleeve, 21-slot and 22-idle wheel.

Detailed Description

In order that the utility model may be described in detail, reference will now be made in detail to the following examples.

The structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the art, and any structural modifications, changes in proportions, or adjustments in size, which do not affect the efficacy and attainment of the same are intended to fall within the scope of the present disclosure. In addition, the terms "front and back", "up and down", "left and right", "inside and outside", "middle" and "one" used in the present specification are for convenience of description and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered to be the scope of the present invention without substantial changes in the technical content.

Example 1

Fig. 1-4 are structural diagrams of the full-automatic passive mechanical linkage deviation rectifying device of the rubber belt conveyor, which consists of two groups of groove-shaped deviation rectifying carrier roller groups (each group comprises three carrier rollers).

As shown in fig. 1, it comprises a frame-shaped underframe, a friction wheel 5, a rear groove-shaped deviation-rectifying carrier roller group 3 and a front groove-shaped deviation-rectifying carrier roller group 4; the front groove-shaped deviation rectifying carrier roller group 4 and the rear groove-shaped deviation rectifying carrier roller group 3 are arranged on the frame-shaped bottom frame in tandem; the frame-shaped underframe consists of two longitudinal beams 1 parallel to the trend of the adhesive tape, a cross beam 2 connecting the two longitudinal beams 1 and a middle cross beam 18; the beam 2 is provided with a shaft hole 11 for supporting the deviation rectifying carrier roller group; the deviation-adjusting carrier rollers (comprising inclined deviation-adjusting rollers at two sides and a horizontal deviation-adjusting roller in the middle) adopt standard carrier rollers with the same model according to the model of the rubber belt conveyor; the circumferential surface (the contact surface with the adhesive tape) of the friction wheel 5 adopts a conical surface structure and is made of polyurethane.

The front groove-shaped deviation rectifying carrier roller group 4 and the rear groove-shaped deviation rectifying carrier roller group 3 are both split, namely, the inclined deviation rectifying rollers at the two sides and the horizontal deviation rectifying roller in the middle of the front groove-shaped deviation rectifying carrier roller group and the rear groove-shaped deviation rectifying carrier roller group are respectively and independently used as a small carrier roller frame; as shown in fig. 2, the small carrier roller frame of the rear groove-shaped deviation rectifying carrier roller group 3 comprises a right rear oblique carrier roller frame 3a, a left rear oblique carrier roller frame 3c and a middle rear horizontal carrier roller frame 3b, and each small carrier roller frame is respectively arranged on the shaft hole 11 corresponding to the cross beam through a rotating shaft 12;

the device also comprises a gear reduction mechanism 6, a lead screw motion mechanism and a rocker linkage mechanism;

the gear speed reducing mechanism 6 is provided with two sets, namely a front speed reducing mechanism 6a and a rear speed reducing mechanism 6b, which are symmetrically arranged between the two groove-shaped deviation rectifying carrier roller sets; the friction wheels 5, namely the front friction wheel 5a and the rear friction wheel 5b are respectively arranged on the front speed reducing mechanism 6a and the rear speed reducing mechanism 6 b; the power output shafts of the two sets of gear reduction mechanisms 6 are respectively connected with the two ends of the screw rod movement mechanism through universal joints 17 so as to realize variable-angle power transmission;

the lead screw movement mechanism is shown in fig. 4 and comprises a nut 10 and a matched lead screw 9; two nuts 10 are arranged and respectively fixed on the middle cross beam 18 of the frame-shaped underframe; the surface of the lead screw 9 is provided with an external thread matched with the screw nut 10 and is arranged in the two screw nuts 10; the screw 9 is a hollow screw, a spline is arranged in a central hole, a section is respectively arranged from two ends, and the right spline shaft 16a and the left spline shaft 16b are respectively connected with the adjacent universal joints 17 to realize power transmission with the gear speed reducing mechanism 6; the front end of the spline shaft is required to be a round shaft, and the length of the spline part is required to meet the requirement of the distance for the spline shaft 16 to drive the screw rod 9 to move back and forth; the purpose is that when the spline shaft 16 drives the screw rod 9 to rotate so that the screw rod 9 moves to a certain distance, the screw rod is timely unhooked from the spline hole, the screw rod 9 is not moved any more, and the front end of the spline shaft 16 is still in the spline hole and cannot be separated from the screw rod 9; a follower sleeve 20 with a slot 21 is further arranged in the middle of the lead screw 9, the follower sleeve 20 is connected with the lead screw 9 through a plane thrust bearing 19, and the follower sleeve 20 is used for being connected with a middle rocker 8b of the rocker linkage mechanism; when the follower sleeve 20 moves back and forth, each carrier roller of the two groove-shaped deviation rectifying carrier roller groups is driven to synchronously rotate inwards respectively, and a certain angle is formed between the carrier rollers and the running direction of the conveying belt; the rocker linkage mechanism is structurally characterized in that a right rocker 8a, a middle rocker 8b and a left rocker 8c are respectively arranged on a rotating shaft 12 below each small roller frame (comprising a right rear inclined roller frame 3a, a left rear inclined roller frame 3c and a middle rear horizontal roller frame 3 b) of the rear groove type deviation rectifying roller group 3, and the three rockers are jointly hinged on a connecting rod 8d to form a four-connecting-rod mechanism; the middle rocker 8b extends to the position of the follower sleeve 20, a shifting fork matched with the follower sleeve slot 21 is arranged at the extending end, and the shifting fork is inserted into the slot 21 so as to realize that the lead screw movement mechanism drives the rocker linkage mechanism to move;

the rocker linkage mechanism also comprises three small roller frames (comprising a right rear inclined roller frame 3a, a left rear inclined roller frame 3c and a middle rear horizontal roller frame 3 b) of the rear groove type deviation rectifying roller group 3 and three small roller frames (comprising a right front inclined roller frame 4a, a left front inclined roller frame 4c and a middle front horizontal roller frame 4 b) of the front groove type deviation rectifying roller group 4 are respectively and correspondingly hinged with a push-pull rod (comprising a right push-pull rod 7a, a middle push-pull rod 7b and a left push-pull rod 7 c) by the push-pull rod (the hinge point is arranged at the same end of the corresponding small roller frame), so that the two groove type deviation rectifying roller groups (the front groove type deviation rectifying roller group 4 and the rear groove type deviation rectifying roller group 3) form linkage;

further, the reduction ratio of the gear reduction mechanism is (4-6): 1, in order to meet the structural design requirement, the gear speed reducing mechanism 6 performs two-stage speed reduction by a pair of speed reducing straight gears and a pair of speed reducing chain wheels as shown in fig. 4; the specific structure is that a driving gear 14a of a speed reduction spur gear is arranged on an input shaft, a driven spur gear 14b is coaxial with a driving sprocket 15a of a speed reduction sprocket, and a driven sprocket 15b shaft of the speed reduction sprocket is used as an output shaft of the speed reduction mechanism 6; the speed reducing mechanism 6 is sealed in a damp-proof and rust-proof shell 13, and meets the use requirements of various humid and severe environment places, particularly underground coal mines;

furthermore, because the two sets of gear reduction mechanisms act on one screw rod together, when the gear reduction mechanism on one side works, the gear reduction mechanism on the other side can be driven to rotate reversely, and in order to reduce unnecessary negative effects, a one-way bearing is arranged on a power output wheel (a driven chain wheel 15b in fig. 4) shaft of the gear reduction mechanism, and only the shaft is allowed to rotate but the gear does not rotate; the one-way bearing is a common bearing, can freely rotate in one direction and is locked in the other direction, and is also called as a backstop or an overrunning clutch. Or the power output wheel (driven chain wheel 15b in fig. 4) of the gear speed reducing mechanism is designed into a flywheel structure of the bicycle.

When the screw rod 9 is a positive screw thread, in order to return the input and output shafts of the left gear speed reducing mechanism, the screw rod must rotate in the same direction, so that the driving spur gear and the driven spur gear of the speed reducing spur gear need to be driven by the intermediate gear 22 to realize the rotation in the same direction; and vice versa.

In order to further the construction of embodiment 1, the operation principle will be explained again with reference to the drawings. At the position where the adhesive tape is easy to deviate, the original machine frame is dismantled and replaced by the device shown in the figure 1. As shown in fig. 3 and 5, the adhesive tape normally runs along the arrow a direction, when the adhesive tape deviates towards the arrow B direction, the adhesive tape generates friction with the front friction wheel 5a on the deviation side, and the friction wheel rotates to drive the front speed reducing mechanism 6a to work; the front speed reducing mechanism 6a transmits the amplified power to the right spline shaft 16a, the right spline shaft 16a rotates together with the lead screw 9 (at the moment, the right spline shaft 16a on the other side only idles under the unidirectional action), the lead screw 9 moves back to one side of deviation (in the direction opposite to the arrow B) under the action of the screw nut while rotating, so that the follower sleeve 20 on the lead screw 9 pushes the rocker linkage mechanism, the rocker linkage mechanism enables the rollers of the deviation correcting roller group 3 to simultaneously rotate inwards to form a certain reverse angle with the advancing direction of the rubber belt to form friction resistance, the rubber belt generates a return trend under the oblique guidance of the deviation correcting roller after being blocked, if the deviation is continued, the deviation correcting roller continues to rotate inwards, the larger the rotating angle is, the larger the formed deviation correcting force is until the deviation correcting force and the deviation correcting force are balanced, and the centered normal operation is maintained. After normal operation, if the rubber belt deviates to the other side, the rubber belt generates friction with the rear friction wheel 5b on the other side, the rear speed reducing mechanism 6b on the other side, the spline shaft 16b and the screw rod 9 rotate together, the screw rod 9 returns, all the deviation adjusting carrier rollers rotate outwards until the deviation force and the friction force finally reach balance, the rubber belt keeps normal operation, and the deviation is not caused.

Further, the inward rotation of the idler described above refers to the rotation of the idler in the length direction around a certain plane angle of the small idler frame shaft, and cannot be misinterpreted as the rolling rotation of the idler itself.

Example 2

The full-automatic passive mechanical linkage deviation correcting device of the rubber belt conveyor in the embodiment 2 is a straight-line-shaped deviation correcting carrier roller group consisting of two horizontally-arranged carrier rollers, and is mainly used for correcting the deviation of a lower belt. The structure of the straight-line-shaped deviation rectifying carrier roller set is shown in figure 6. The carrier roller group can be provided with one group or two groups, wherein the two groups are respectively arranged on the front cross beam 2 and the rear cross beam 2 of the frame-shaped underframe, and the one group is arranged on the front cross beam 2; the carrier rollers respectively and independently use a small carrier roller frame, a downward shaft 12 is fixed at the central position of the small carrier roller frame, and the small carrier roller frame is arranged in a shaft hole 11 of a cross beam 2 of the frame-shaped underframe through the shaft 12; the gear reduction mechanism 6, the lead screw motion mechanism and the rocker linkage mechanism which are constructed according to the principle of the embodiment 1 are also included, and the details are not described, and the construction is obvious to a person skilled in the art on the basis of the embodiment 1.

Example 3

The full-automatic passive mechanical linkage deviation correcting device of the rubber belt conveyor in the embodiment 2 is a V-shaped deviation correcting carrier roller group formed by two inclined carrier rollers, and the structure of the V-shaped deviation correcting carrier roller group is shown in fig. 7. The carrier roller group can be provided with one group or two groups, wherein the two groups are respectively arranged on the front cross beam 2 and the rear cross beam 2 of the frame-shaped underframe, and the one group is arranged on the front cross beam 2; the carrier rollers respectively and independently use a small carrier roller frame, a downward shaft 12 is fixed at the central position of the small carrier roller frame, and the small carrier roller frame is arranged in a shaft hole 11 of a cross beam 2 of the frame-shaped underframe through the shaft 12; the gear reduction mechanism 6, the lead screw motion mechanism and the rocker linkage mechanism which are constructed according to the principle of the embodiment 1 are also included, and the details are not described, and the construction is completely understood by the skilled person on the basis of the embodiment 1.

Example 4

The full-automatic passive mechanical linkage deviation correcting device of the rubber belt conveyor in the embodiment 4 is characterized in that a group of deviation correcting carrier roller groups are removed on the basis of the embodiment 1, and only one group of deviation correcting carrier roller groups are arranged; when a set is provided, the right push-pull rod 7a, the middle push-pull rod 7b and the left push-pull rod 7c shown in fig. 3 are also omitted. For places with small deflection force, the form of a group of deviation rectifying carrier roller groups can be adopted.

All the embodiments of the utility model are arranged at the position where the rubber belt conveyor is easy to deviate, and the whole device is required to be stably arranged and reliably operated.

The above embodiments are only examples of the various forms of the fully automatic passive mechanical linkage deviation correcting device of the belt conveyor, and other embodiments of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification.

Claims (10)

1. A full-automatic passive mechanical linkage deviation correcting device of a rubber belt conveyor comprises a frame-shaped bottom frame, a friction wheel and a deviation correcting carrier roller set; the method is characterized in that: the device also comprises a gear speed reducing mechanism, a lead screw motion mechanism and a rocker linkage mechanism;

the deviation rectifying carrier roller group consists of 2-3 carrier rollers and is arranged on a cross beam of the frame-shaped underframe; the carrier rollers are respectively provided with a small carrier roller frame, a downward shaft is fixed at the center of the small carrier roller frame, and the small carrier roller frames are arranged in the shaft holes of the cross beam through the shafts;

the two sets of gear reduction mechanisms are symmetrically arranged on the front side and the rear side of the frame-shaped underframe, the friction wheels are arranged on an input shaft of the gear reduction mechanisms and are positioned on the two sides of a normally-running conveying belt, and the conveying belt can press the friction wheels to generate friction force to rotate when deviating; the power output shafts of the two sets of gear reduction mechanisms are respectively connected with universal joints used for connecting the screw rod movement mechanisms;

the screw rod movement mechanism is characterized in that two nuts are fixed on the other cross beam of the frame-shaped underframe, and matched screw rods are arranged on the two nuts; the lead screw is a hollow lead screw, a spline groove is arranged in a central hole, a spline shaft is respectively arranged at two ends of the lead screw and then connected with the universal joint, so that the power transmission of a lead screw motion mechanism and a gear reduction mechanism is realized; the front section of the spline shaft is required to be a round shaft, the length of the spline section is equal to the design distance of the lead screw moving back and forth, when the spline shaft drives the lead screw to rotate so that the lead screw moves to the set distance, the lead screw is timely unhooked from the spline hole to stop moving, and the round shaft section is still in the central hole of the lead screw; the lead screw is also provided with a follower sleeve with a slot through a plane direct-push bearing;

the rocker linkage mechanism is structurally characterized in that a rocker is fixed on a rotating shaft of each small roller frame of a group of deviation rectifying roller sets, all the rockers are hinged to a connecting rod together, one rocker extends to a follower sleeve, a shifting fork matched with a slot of the follower sleeve is arranged at the extending end of the rocker, the shifting fork is inserted into the slot, a lead screw drives the rockers to move together, and the rocker drives all the rollers of the deviation rectifying roller sets to rotate inwards to form a certain angle with the running direction of a conveying belt.

2. The fully automatic passive mechanical linkage deviation correcting device of a belt conveyor as in claim 1, wherein one or two groups of deviation correcting idler sets are provided; when two groups are arranged, the two groups are respectively arranged on a front beam and a rear beam of the frame-shaped underframe, the small roller frames which are mutually corresponding of the front group and the rear group are mutually hinged by a push-pull rod, and a hinged joint is arranged at the same end of the corresponding small roller frame, so that the two groups of deviation-rectifying roller sets are linked; when a group is arranged, the front beam is arranged on the front beam of the frame-shaped underframe.

3. The fully automatic passive mechanical linkage deviation correcting device of the rubber belt conveyor as claimed in claim 1 or 2, wherein the deviation correcting idler set is one of a V-shaped deviation correcting idler set for correcting the upper belt deviation of the rubber belt conveyor or a straight-line-shaped deviation correcting idler set for correcting the lower belt deviation of the rubber belt conveyor, which is composed of two idlers.

4. The full-automatic passive mechanical linkage deviation correcting device of the rubber belt conveyor as claimed in claim 1 or 2, wherein the deviation correcting carrier roller group is a U-shaped deviation correcting carrier roller group which is composed of three carrier rollers and is used for correcting the deviation of the upper belt of the rubber belt conveyor.

5. The full-automatic passive mechanical linkage deviation correcting device of a belt conveyor as claimed in claim 1 or 2, wherein the power output wheel of the gear speed reducing mechanism is provided with a one-way bearing, which only allows the shaft to rotate but the gear not to rotate.

6. The full-automatic passive mechanical linkage deviation correcting device of a belt conveyor as claimed in claim 1 or 2, wherein the power output wheel of the gear speed reducing mechanism is in a bicycle flywheel structure, and only the shaft is allowed to rotate while the gear does not rotate.

7. The full-automatic passive mechanical linkage deviation correcting device of the belt conveyor as claimed in claim 1 or 2, wherein the reduction ratio of the gear speed reducing mechanism is (4-6): the gear speed reducing mechanism performs two-stage speed reduction by a pair of speed reducing straight gears and a pair of speed reducing chain wheels.

8. The full-automatic passive mechanical linkage deviation correcting device of a belt conveyor as claimed in any one of claims 1 or 2, wherein the speed reducing mechanism is enclosed in a moisture-proof and rust-resistant housing, and the lead screw motion mechanism is enclosed in a dust-proof and rust-resistant telescopic sleeve.

9. A full-automatic passive mechanical linkage deviation correcting device of a belt conveyor as claimed in any one of claims 1 or 2, wherein the idler is a standard idler of the same type as the belt conveyor to be corrected.

10. A full automatic passive mechanical linkage deviation correcting device of a belt conveyor as claimed in any one of claims 1 or 2, wherein said friction wheel is made of polyurethane material into a conical shape.

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