Linkage type groove angle self-adaptive steady-state energy-saving device of belt conveyor

Abstract

The invention discloses a linkage type groove angle self-adaption steady-state energy-saving device of a belt conveyor, and belongs to the technical field of belt conveyors. The self-adaptive steady-state energy-saving device comprises a plurality of sets of self-adaptive steady-state energy-saving devices arranged on the two sides of an upper carrier roller frame, and each set of self-adaptive steady-state energy-saving device achieves self-adaptive adjustment of a groove angle through the synergistic effect of a movable side wing arm, a main supporting frame, a torsion spring, a central hinged main shaft, a rotary damper and a micro oil cylinder. And all the micro oil cylinders are communicated to an energy accumulator through high-pressure hoses to form a pressure community, so that linkage of multiple groups of carrier rollers is ensured, and load change is synchronously responded. During no-load, the torsion spring enables the carrier roller group to be flattened so as to save energy; when the load is increased, the groove angle is deepened under the cooperation of hydraulic force to stabilize the load; the rotary damper suppresses oscillation caused by abrupt load. And the self-adaptive deviation correcting device is arranged at the lower part, so that automatic unpowered deviation correction can be realized during deviation. The problems that a fixed groove angle carrier roller set is high in energy consumption and prone to deviation and wavy deformation are effectively solved, and the fixed groove angle carrier roller set has the remarkable advantages of being energy-saving, stable, reliable and long in service life.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of belt conveyors, and particularly relates to a linkage type groove angle self-adaptive steady-state energy-saving device of a belt conveyor. BACKGROUND

[0002] The belt conveyor is the core equipment for bulk material conveying, and the performance of the roller set is crucial. The fixed groove angle roller set widely used at present has obvious defects: first, the conveying belt is forced to bend under no load or light load, resulting in unnecessary bending and indentation resistance and high energy consumption; second, the fixed groove angle cannot be self-adapted to changes, which easily induces longitudinal wavy deformation of the conveying belt, increases resistance, and accelerates fatigue; third, the belt edge is easily worn due to material off-tracking. The existing solutions, such as the lubrication resistance reduction solution of CN222292799U and the laser detection and electrically executed deviation correction solution of CN120534711A, are mostly limited to independent action of a single roller set, and cannot solve the system level wavy deformation and off-tracking risk caused by different actions of multiple roller sets. Therefore, there is an urgent need for a new type of roller system that can be cooperatively linked and self-adapted to prevent deformation. SUMMARY

[0003] The present application aims to solve the above technical problems and provide a linkage type groove angle self-adaptive steady-state energy-saving device of a belt conveyor.

[0004] To solve the above technical problems, the present application adopts the technical solution of:

[0005] A linkage type groove angle self-adaptive steady-state energy-saving device of a belt conveyor, comprising a plurality of self-adaptive steady-state energy-saving devices, each of which is arranged on the two sides of a hinged roller set of the belt conveyor.

[0006] The self-adaptive steady-state energy-saving device comprises a movable side wing arm, a main support frame, a torsion spring, a central hinge main shaft, a rotary damper, and a micro oil cylinder. The main support frame is a "N" type structure and is vertically fixed on the main support frame base on the two sides of the hinged roller set. The central hinge main shaft is hingedly connected to the upper ends of the two side plates of the main support frame. The tail of the micro oil cylinder is hingedly connected to the lower part of the main support frame. The middle part of the movable side wing arm is hingedly connected to the central hinge main shaft, the upper end is hingedly connected to the side roller shaft end of the hinged roller set, and the lower end is hingedly connected to the telescopic rod of the micro oil cylinder. The torsion spring is arranged on the central hinge main shaft, the middle protrusion of the torsion spring is clamped in the small groove of the movable side wing arm, and the two ends are clamped on the inner lugs of the two side plates of the main support frame, so that the movable side wing arm always receives a torque that flattens the hinged roller set. The rotary damper is located on the outer side of the two side plates of the main support frame and is in transmission connection with the central hinge main shaft. An elastic baffle ring for shafts is arranged between the rotary damper and the central hinge main shaft.

[0007] All the micro oil cylinders of the adaptive steady-state energy-saving device are connected to each other through high-pressure hoses and connected to a common accumulator, forming a hydraulic linkage system.

[0008] Further, the lower part of the main support frame base is further provided with an anti-deviation base, and the main support frame base and the anti-deviation base are provided with an adaptive deviation rectifying device.

[0009] Further, the adaptive deviation rectifying device comprises an intermediate shaft, a shaft sleeve, a thrust ball bearing, two deviation rectifying shafts and two self-aligning roller bearings, the intermediate shaft is connected with the shaft sleeve through the thrust ball bearing, so that the main support frame base can rotate around the intermediate shaft, and the interface between the intermediate shaft and the shaft sleeve is provided with an elastic shaft baffle for limiting.

[0010] Further, the adaptive deviation rectifying device further comprises two symmetrically arranged deviation rectifying shafts and self-aligning roller bearings, the two deviation rectifying shafts are symmetrically arranged on the anti-deviation bases on the left and right sides of the intermediate shaft, the self-aligning roller bearings are arranged on the upper parts of the deviation rectifying shafts, and the self-aligning roller bearings are matched with the arc-shaped groove slides of the main support frame base.

[0011] Compared with the prior art, the adaptive deviation rectifying device has the following beneficial effects:

[0012] 1. All the micro oil cylinders of the adaptive deviation rectifying device are connected to the accumulator through a common oil circuit, forming a "pressure community", when the local load changes, the pressure change will be transmitted to the whole group of carrier rollers instantly, driving all the movable side wing arms to move synchronously and in the same direction, so that the groove angle of the region is uniformly and smoothly changed, and the cooperative posture adjusting mechanism of the multi-carrier roller group fundamentally avoids the problems of longitudinal wavy deformation, stress concentration and material scattering of the conveying belt caused by the asynchronous independent movement of the single carrier roller group, and greatly improves the running stability and reliability.

[0013] 2. The adaptive deviation rectifying device can automatically flatten the carrier roller group under no load or light load through the pre-torque of the torsion spring, so that the conveying belt can be kept in a gentle form, and the unnecessary bending resistance and carrier roller sinking resistance are fundamentally eliminated, and when the load increases, the groove angle can be automatically deepened to stabilize the carried material, and the ability of automatically optimizing the groove shape according to the load can greatly reduce the running energy consumption.

[0014] 3. The linkage posture adjusting function of the adaptive deviation rectifying device can automatically compensate the influence of transverse deviation load, and inhibit the deviation tendency from the root cause. When deviation occurs, the whole upper base can automatically rotate around the intermediate shaft without power through the self-aligning roller bearings in the arc-shaped groove, and the transverse reciprocating deviation force is applied to the conveying belt, so that continuous self-correction during operation is realized, and the deviation accidents and maintenance workload are effectively reduced.

[0015] 4、The rotation damper of the present application provides essential damping force for the system, when the transport volume changes suddenly, it can effectively inhibit the rapid rotation of the movable arm and the oscillation of the system, absorb the impact energy, make the groove angle change process smooth and soft, avoid the violent shaking of the conveyor belt, and ensure the dynamic stability of the system operation;

[0016] 5、The whole system of the present application adopts the pure mechanical and hydraulic linkage principle, does not need external power source and complex electrical control system, has solid structure, is resistant to dust, moisture and other harsh working conditions, has strong environmental adaptability, low failure rate, simple maintenance and long service life. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall working schematic diagram of the present application;

[0018] Figure 2 is the front view structural schematic diagram of a single set of components of the present application;

[0019] Figure 3 is the side view structural schematic diagram of a single set of components of the present application;

[0020] Figure 4 is Figure 2 the A-A direction sectional view of the present application;

[0021] Figure 5 is Figure 2 the B-B direction sectional view of the present application;

[0022] Figure 6 is Figure 2 the C direction view of the present application;

[0023] Figure 7 is the working principle schematic diagram of the micro oil cylinder and the energy accumulator of the present application;

[0024] Figure 8 is the torsion spring structure schematic diagram of the present application;

[0025] Figure 9 is the central hinged main shaft structure schematic diagram of the present application;

[0026] In the figure: 1-conveyor belt; 2-hinged roller group; 3-movable side wing arm; 4-main support frame; 5-torsion spring; 6-central hinged main shaft; 7-rotation damper; 8-elastic retaining ring for shaft; 9-micro oil cylinder; 10-anti-deviation base; 11-energy accumulator; 12-high pressure hose; 13-intermediate shaft; 14-shaft sleeve; 15-thrust ball bearing; 16-correcting shaft; 17-adjusting roller bearing; 18-arc groove slide. DETAILED DESCRIPTION

[0027] The present application will be further described below in combination with examples and their accompanying drawings.

[0028] As Figures 1-9 shown, a linkage type trough angle adaptive steady-state energy-saving device of a belt conveyor, the standard middle frame of the belt conveyor is 6 m long, the interval of the upper roller frame is 1.2 m, five groups of upper roller frames are arranged on a group of middle frames, the conveying belt 1 serves as a traction and load bearing component for conveying bulk materials, and a positive pressure is applied to the hinged roller group 2 which is composed of a middle roller, two side rollers, a hinge piece and a pin shaft.

[0029] Each group of adaptive steady-state energy-saving devices is provided with a group of adaptive steady-state energy-saving devices, and the adaptive steady-state energy-saving device comprises a movable side wing arm 3, a main support frame 4, a torsion spring 5, a central hinge main shaft 6, a rotary damper 7 and a micro oil cylinder 9, the main support frame 4 is in the shape of a "N" and is vertically fixed on the main support frame base on both sides of the hinged roller group 2, the central hinge main shaft 6 is hingedly connected to the upper end of the two side plates of the main support frame 4, the tail of the micro oil cylinder 9 is hingedly connected to the lower part of the main support frame 4, the middle part of the movable side wing arm 3 is hingedly connected to the central hinge main shaft 6, the upper end is hingedly connected to the side roller shaft end of the hinged roller group 2, and the lower end is hingedly connected to the telescopic rod of the micro oil cylinder 9, the torsion spring 5 is a high-strength spring selected after calculation, the middle protruding part is clamped in the small groove of the movable side wing arm 3, and the two ends are clamped on the inner lugs of the two side plates of the main support frame 4, so that the movable side wing arm 3 is always subjected to a torque rotating outward relative to the main support frame 4 around the main shaft, and the hinged roller group 2 is flattened, the rotary damper 7 is installed on the outer side of the two side plates of the main support frame 4 through bolts, and is connected to the central hinge main shaft 6 through key and groove matching, the rotary damper 7 has a bidirectional damping function, when the load suddenly changes, the oil in the rotary damper 7 flows through the small hole to generate resistance, and the resistance is fed back to the movable side wing arm 3 through the central hinge main shaft 6, so as to inhibit the rapid rotation of the movable side wing arm 3, prevent the oscillation of the conveying belt 1, and make the operation more stable, and the rotary damper 7 and the central hinge main shaft 6 are provided with an elastic shaft ring 8;

[0030] The micro oil cylinder 9 of each group of adaptive steady-state energy-saving devices is connected to the accumulator 11 through the high-pressure hose 12, when the conveying belt 1 carrying a certain amount of material passes through the first group of roller frames, the movable side wing arm 3 is forced to rotate, the micro oil cylinder 9 piston rod is lifted, the oil passes through the common pipeline to the accumulator 11, because all the oil cylinder cavities are connected, a "pressure community" is formed, and the local pressure change is quickly transmitted to the whole group of rollers, so that the movable arms of the whole group of rollers are simultaneously and synchronously slightly pressed down, the trough angle of the region is uniformly deepened, the belt surface height is uniformly slightly lowered, but a smooth slope transition is maintained instead of a sudden "wave", which can greatly reduce the indentation resistance between the conveying belt 1 and the roller, and the operation is more energy-saving and stable, and the accumulator 11 plays a role in absorbing pressure pulse and stabilizing system pressure.

[0031] As Figure 7 shown, the specific working principle of the "pressure community" is that the micro oil cylinder 9 is composed of a rod cavity and a rodless cavity, the rod cavities and the rodless cavities of adjacent oil cylinders are connected in series through high-pressure hoses 12, and the rod cavities and the rodless cavities of the first and last oil cylinders are connected to the accumulator 11 through high-pressure hoses 12 to form a closed loop. When the load suddenly changes, the piston rod of the oil cylinder 1 is lifted, the oil in the rod cavity is squeezed into the rodless cavity of the oil cylinder 2 through the high-pressure hose 12, the rod cavity of the oil cylinder 2 is compressed, the oil rod is lifted, and the rear oil cylinders are lifted in turn, so that all the movable side wing arms 3 are folded inward in turn, thereby uniformly and smoothly deepening the groove angle of the region. The accumulator 11 has an oil cavity and an oil-free cavity. By filling the oil-free cavity with nitrogen gas with a certain pressure, it is like an "air cushion" that is compressed when the pressure suddenly rises to absorb excess oil and impact energy. When the pressure decreases, the gas expands to discharge the oil, maintaining the pressure balance of the system. When the load is empty or light, the accumulator 11 has a certain pressure inside, so that the pressure of the two cavities of all oil cylinders is balanced, and the height of the oil rod of all oil cylinders is restored to be almost consistent. With the action of the torsion spring 5, the movable side wing arm 3 is in a position where the belt is flattened.

[0032] The main support frame base lower part is further provided with an anti-deviation base 10, a self-adaptive deviation correction device is arranged between the main support frame base and the anti-deviation base 10, the self-adaptive deviation correction device comprises a middle shaft 13, a shaft sleeve 14, a thrust ball bearing 15, two deviation correction shafts 16 and two aligning roller bearings 17, the upper half of the middle shaft 13 is inserted into the middle of the main support frame base, and the lower half is inserted into the middle of the anti-deviation base 10 through the shaft sleeve 14, the middle shaft 13 and the shaft sleeve 14 are connected through the thrust ball bearing 15, the interface between the middle shaft 13 and the shaft sleeve 14 is limited by the elastic shaft collar 8, the two deviation correction shafts 16 are symmetrically arranged on the anti-deviation base 10 on the left and right sides of the middle shaft 13, the deviation correction shaft 16 is provided with an elastic stopper 8 at both ends, the aligning roller bearing 17 is arranged on the upper part of the deviation correction shaft 16, and the upper end of the aligning roller bearing 17 is matched with an arc-shaped groove slide 18 of the main support frame base. When the conveying belt 1 deviates, the main support frame 4 can rotate around the middle shaft 13 of the anti-deviation base 10 without power, the aligning roller bearing 17 slides in the arc-shaped groove slide 18 around the middle shaft 13, and a certain deviation correction effect is achieved, so that the conveying belt 1 can be safely and reliably operated.

[0033] Working process of the present application

[0034] 1. Empty load or light load working condition:

[0035] At this time, the material weight on the conveyor belt 1 is light or empty, under the action of the pre-torque of the torsion spring 5, the movable side wing arm 3 is subjected to a force that makes it rotate outward, which acts on the side rollers of the hinged roller group through the upper end hinge point, overcomes the slight resistance of the micro oil cylinder 9, and lifts the entire roller group 2 upward to tend to be flat, so that the conveyor belt 1 passes in a gentle or shallow trough shape, the bending and indentation resistance is minimized, thereby achieving energy-saving operation, and the rotary damper 7 is in standby state at this time.

[0036] 2. Load increasing condition:

[0037] When the material carried by the conveyor belt 1 increases, the positive pressure exerted by the material weight on the hinged roller group 2 increases, which is transmitted to the upper end of the movable side wing arm 3, generating a torque that overcomes the pre-torque of the torsion spring and makes the movable arm retract inward, the movable side wing arm 3 rotates around the central hinge main shaft 6, the lower end of which lifts the piston rod of the micro oil cylinder 9, and the oil in the oil cylinder is pressed into the common pipeline and the accumulator 11 through the high-pressure hose 12, since the oil circuits of all the oil cylinders are interconnected, a "pressure community" is formed, and this local pressure rise will be quickly transmitted to the oil cylinders of the same group or even adjacent roller groups, prompting all movable side wing arms 3 to retract inward in coordination and synchrony, thereby uniformly and smoothly deepening the trough angle in this area to better contain and transport the material, and the accumulator 11 absorbs the pressure pulse in this process to maintain stable system pressure, and the rotary damper 7 provides damping when the movable arm rotates to prevent impact or oscillation caused by rapid movement, ensuring smooth change of the trough angle.

[0038] When the material is transported on the conveyor belt 1, the movable side wing arms 3 of the entire roller group in this area will simultaneously and slightly downward, causing the trough angle in this area to be uniformly deepened and the belt surface height to be slightly lowered, but maintaining a smooth slope transition rather than a sudden "wave", which can greatly reduce the indentation resistance between the conveyor belt 1 and the rollers, and the operation is more energy-saving and stable.

[0039] 3. Load mutation condition:

[0040] When the load suddenly increases, such as a large amount of material suddenly falling or decreasing, it is easy to cause system oscillation, at this time, the rotary damper 7 plays a key role, the rapid rotation of the movable side wing arm 3 will drive the central hinge main shaft 6 to rotate rapidly, the oil in the rotary damper 7 is forced to flow through the small hole, generating a large damping force, which is fed back to the movable side wing arm 3 through the main shaft, effectively inhibiting its rapid movement and absorbing impact energy, enabling the hinged roller group 2 to smoothly transition to a new equilibrium position, avoiding large up-and-down wave deformation of the conveyor belt 1, and ensuring the stability of the operation.

[0041] 4. Run-off condition:

[0042] If the conveying belt 1 deviates to one side due to uneven load or other reasons, the conveying belt 1 on the deviated side will generate additional lateral pressure on the roller group on that side. For a single roller group, this pressure will act on the movable side wing arm 3 and the main support frame 4. For the entire system, due to the special connection design of the upper and lower parts, the pressure on the deviated side will cause an overturning moment on the base of the main support frame, which makes the base have a tendency to rotate around the middle shaft 13. The base generates a lateral slip in the arc-shaped groove slide 18 of the anti-deviation base 10 through the self-aligning roller bearing 17 below it, while the thrust ball bearing 15 between the middle shaft 13 and the shaft sleeve 14 allows the base to deflect slightly. This series of actions collectively constitutes a passive self-adaptive correction process, which generates a reverse correction force on the deviated conveying belt 1 to help it return to the center position and achieve automatic correction.

[0043] The specific values and quantities given in this embodiment are only a typical application scenario and specific example selected to clearly illustrate and demonstrate the technical solutions of the present application, and do not mean that the present application is limited to this specific size or quantity configuration. All variations and implementations based on the core principle of the present application, i.e. forming a pressure community with the interconnection oil circuit and the accumulator to achieve self-adaptive adjustment of the groove angle of multiple roller groups, regardless of the specific size or quantity, fall within the scope of protection required by the present application.

Claims

1. A linkage-type adaptive steady-state energy-saving device for belt conveyors, characterized in that, It includes several sets of adaptive steady-state energy-saving devices, each set of adaptive steady-state energy-saving devices is correspondingly set on both sides of the hinged idler group (2) of the belt conveyor; The adaptive steady-state energy-saving device includes a movable side wing arm (3), a main support frame (4), a torsion spring (5), a central hinged main shaft (6), a rotation damper (7), and a miniature hydraulic cylinder (9). The main support frame (4) has a "U"-shaped structure and is vertically fixed on the main support frame base on both sides of the hinged roller group (2). The two ends of the central hinged main shaft (6) are hinged to the upper ends of the two side plates of the main support frame (4). The tail of the miniature hydraulic cylinder (9) is hinged to the lower part of the main support frame (4). The middle part of the movable side wing arm (3) is hinged to the central hinged main shaft (6), and the upper end is connected to the side roller shaft end of the hinged roller group (2). The lower end is hinged to the telescopic rod of the micro cylinder (9). The torsion spring (5) is set on the central hinged main shaft (6). The middle protrusion of the torsion spring (5) is stuck in the small groove of the movable side wing arm (3), and the two ends are stuck on the inner lugs of the two side plates of the main support frame (4), so that the movable side wing arm (3) is always subjected to a torque that flattens the hinged roller group (2). The rotary damper (7) is located on the outer side of the two side plates of the main support frame (4) and is connected to the central hinged main shaft (6) for transmission. A shaft elastic retaining ring (8) is provided between the rotary damper (7) and the central hinged main shaft (6) for limiting. All the micro cylinders (9) of the adaptive steady-state energy-saving devices are interconnected via high-pressure hoses (12) and connected to a common accumulator (11) to form a hydraulic linkage system.

2. The linked trough angle adaptive steady-state energy-saving device for a belt conveyor according to claim 1, characterized in that, The main support frame base is also provided with an anti-deviation base (10) at the bottom, and an adaptive correction device is provided between the main support frame base and the anti-deviation base (10).

3. The linked trough angle adaptive steady-state energy-saving device for a belt conveyor according to claim 2, characterized in that, The adaptive correction device includes an intermediate shaft (13), a bushing (14), a thrust ball bearing (15), two correction shafts (16) and two self-aligning roller bearings (17). The intermediate shaft (13) is connected to the bushing (14) through the thrust ball bearing (15), so that the main support frame base can rotate around the intermediate shaft (13). An elastic retaining ring (8) for shaft is provided at the interface between the intermediate shaft (13) and the bushing (14).

4. The linked trough angle adaptive steady-state energy-saving device for a belt conveyor according to claim 2, characterized in that, The adaptive correction device also includes two symmetrically arranged correction shafts (16) and self-aligning roller bearings (17). The two correction shafts (16) are symmetrically arranged on the anti-deviation bases (10) on the left and right sides of the intermediate shaft (13). The self-aligning roller bearings (17) are arranged on the upper part of the correction shafts (16). The self-aligning roller bearings (17) cooperate with the arc-shaped groove slide (18) of the main support frame base.

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