Hoisting type conveying belt automatic returning device

Abstract

The utility model discloses a hoisting type conveying belt automatic returning device which comprises a fixed machine frame, a rotary machine frame, a carrier roller mechanism and an on-site machine frame, the fixed machine frame comprises a cross beam frame and two supporting frames symmetrically installed at the two ends of the cross beam frame, and the bottoms of the supporting frames are fixedly connected with the on-site machine frame; the rotary rack comprises an adjusting beam frame and two lifting frames symmetrically installed at the two ends of the adjusting beam frame. The middle of the adjusting beam frame is rotationally connected with the middle of the beam frame through a rotating assembly. The carrier roller mechanism comprises a straight roller assembly and two conical roller assemblies installed on the two sides of the straight roller assembly, and the outer side ends of the two conical roller assemblies are fixedly connected with the two sides of the rotary rack. The utility model provides a mechanical automatic return device applied to a hoisting type conveying belt, which can realize automatic adjustment and real-time correction after the belt deviates. The daily workload of maintenance personnel is greatly reduced; and the height, the length and the interval adjustment of the groove angle of the carrier roller of the automatic return device of the conveying belt can be realized, and various field application requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyor auxiliary devices, in particular to an automatic return device for a hoisting conveyor belt. Background Art

[0002] Belt conveyors are widely used in bulk material transportation in mining, docks, power, chemical and other fields. During the operation of belt conveyors, belt deviation is a very common production failure. If not discovered and handled in time, it will lead to major safety accidents such as belt tearing, material spillage, and personal injury. Therefore, the prevention and treatment of conveyor belt deviation failure is an important task for safe production.

[0003] The hoisting frame is a special type of belt conveyor, which is mainly used in retractable belt conveyors. Retractable belt conveyors are mainly used to transport raw coal along the chute of coal mining working faces in coal mines or to transport bulk materials or raw materials in tunnels and tunnel excavations.

[0004] Defects and shortcomings of the existing technology:

[0005] Compared with ordinary fixed conveyor racks, the hoisting conveyor rack has the characteristics of simple structure and easy disassembly and assembly, but its belt operation stability is poor. If the belt deviates during operation, the general adjustment methods include: 1. Adjusting the height of the roller or the racks on both sides; 2. Adjusting the angle of the hoisting roller; 3. Adding vertical rollers on both sides of the conveyor belt to force the belt back to the middle through friction with the edge of the belt.

[0006] As for the existing adjustment methods, adjusting the frame height and the angle of the hoisting rollers is time-consuming and laborious, and difficult to operate, and adding vertical rollers will cause irreversible damage to the belt. Therefore, there is no simple and reliable solution to the problem of belt deviation in the existing solutions for hoisting conveyor frames. Utility Model Content

[0007] In order to solve the problem that the conveyor belt in the above-mentioned hoisting conveyor frame cannot be centered during operation and reduce manual interference and conveyor belt damage during adjustment, the utility model provides an automatic return device for a hoisting conveyor belt, which can realize the automatic return of the conveyor belt in the hoisting conveyor frame after deviation.

[0008] In order to achieve the above-mentioned purpose, the utility model is specifically realized through the following technical solutions:

[0009] A lifting type conveyor belt automatic return device comprises a fixed frame, a rotating frame, a roller mechanism and a field frame, wherein the fixed frame comprises a crossbeam frame and two support frames symmetrically installed at both ends of the crossbeam frame, the bottom of the support frame is fixedly connected to the field frame, and the field frame is vertically symmetrically fixed on both sides of the conveyor belt; the rotating frame comprises an adjusting beam frame and two lifting frames symmetrically installed at both ends of the adjusting beam frame; the middle part of the adjusting beam frame is rotatably connected to the middle part of the crossbeam frame through a rotating assembly; the roller mechanism comprises a straight roller assembly and two tapered roller assemblies installed on both sides of the straight roller assembly, and the outer ends of the two tapered roller assemblies are fixedly connected to both sides of the rotating frame.

[0010] Furthermore, the rotating assembly includes a rotating shaft core arranged on the top surface of the middle part of the crossbeam frame and an shaft core sleeve fixedly installed on the adjusting beam frame, the shaft core sleeve is sleeved on the rotating shaft core, and a bearing is installed on the rotating shaft core.

[0011] Furthermore, long waist holes are symmetrically arranged on the adjusting beam frame, and the adjusting beam frame is connected to the hanging frame through the long waist holes and bolts.

[0012] Furthermore, the hanging frame is a two-section connecting rod structure, and the middle of the two sections is fixed by a bolt shaft.

[0013] Furthermore, an adjusting screw is vertically installed on one side of the support frame, and both ends of the crossbeam frame are connected to the support frame through the adjusting screw.

[0014] Furthermore, transverse telescopic frames are arranged at both ends of the crossbeam frame, and both ends of the crossbeam frame are connected to the support frame through the transverse telescopic frames.

[0015] Furthermore, the straight roller assembly includes a straight roller frame and two straight rollers installed in parallel on the straight roller frame.

[0016] Furthermore, the tapered roller assembly comprises a tapered roller frame and a tapered roller mounted on the tapered roller frame; the diameter of the tapered roller is thin at the outer end and thick at the inner end.

[0017] Furthermore, the conical roller is a rubber conical roller.

[0018] Furthermore, one end of the two tapered roller frames is respectively connected to the two ends of the straight roller assembly, and the other end is connected to the hanging frame.

[0019] The utility model provides a mechanical automatic return device applied to a hoisting conveyor belt, which can realize the automatic adjustment function after the belt deviates, and utilizes the friction between the roller and the belt to realize automatic mechanical real-time correction of the conveyor belt. The device has a reasonable structure and a reliable adjustment method; it does not require human or auxiliary power equipment intervention, greatly reduces the daily workload of maintenance personnel, and reduces the failure rate of equipment.

[0020] The utility model utilizes the friction between the roller and the belt to realize real-time correction of the conveyor belt, protects the conveyor belt from edge wear, and solves the problems of certain hysteresis of traditional manual adjustment and vertical roller blocking adjustment, as well as the use of blocking rollers or vertical rollers to rigidly block the belt edge to make it return to the center, which causes belt edge wear.

[0021] The utility model can also realize the interval adjustment of the height, length and roller groove angle of the automatic return device of the conveyor belt, and can meet the application of various sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the crossbeam frame in the utility model;

[0024] Figure 3 It is a structural schematic diagram of the adjusting bracket in the utility model;

[0025] Figure 4 It is a structural schematic diagram of the hanging frame in the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the tapered roller assembly of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the straight roller assembly in the utility model;

[0028] Figure 7 It is a schematic diagram of on-site installation of the utility model.

[0029] In the figure, 1-fixed frame; 11-crossbeam frame; 111-lateral telescopic frame; 12-support frame; 121-adjusting screw; 2-rotating frame; 21-adjusting beam frame; 211-long waist hole; 22-lifting frame; 221-bolt shaft; 3-roller mechanism; 31-straight roller assembly; 311-straight roller frame; 312-straight roller; 32-cone roller assembly; 321-cone roller frame; 322-cone roller; 4-rotating assembly; 41-rotating shaft core; 42-shaft core sleeve; 43-locking bolt; 5-on-site frame; 6-conveyor belt. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0032] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0035] like Figures 1 to 7As shown, a hoisting conveyor belt automatic return device of the utility model includes a fixed frame 1, a rotary frame 2, a roller mechanism 3 and a field frame 5. The fixed frame 1 includes a crossbeam frame 11 and two support frames 12 symmetrically installed at both ends of the crossbeam frame 11. The bottom of the support frame 12 is fixedly connected to the field frame 5. The field frame 5 is vertically symmetrically fixed on both sides of the conveyor belt, and the bottom of the field frame 5 is fixed to the ground.

[0036] The rotary frame 2 includes an adjusting beam frame 21 and two hanging frames 22 symmetrically installed at both ends of the adjusting beam frame 21 ; the middle portion of the adjusting beam frame 21 is rotatably connected with the middle portion of the cross beam frame 11 through a rotating assembly 4 .

[0037] The roller mechanism 3 includes a straight roller assembly 31 and two tapered roller assemblies 32 installed on both sides of the straight roller assembly 31 . The outer ends of the two tapered roller assemblies 32 are fixedly connected to both sides of the rotary frame 2 .

[0038] The fixed frame 1 is installed at a position determined according to the on-site working conditions, and is fixed to the on-site frame 5 of the hoisting conveyor belt, and is locked and fixed to any position of the belt conveyor with the on-site frame 5. The center line of the rotary frame 2 coincides with the center line of the fixed frame 1 by installing the support frame 12. During the normal centering operation of the conveyor belt 6, the forces on both sides of the roller mechanism 3 are balanced and the conveyor belt 6 operates in the center, providing drag force for the conveyor belt 6.

[0039] When the conveyor belt 6 deviates to one side during operation, the friction force of its surface on the left and right rollers on the automatic return device changes, and the friction force of the conveyor belt 6 on the cone roller assembly 32 on the deviated side increases, while the friction force of the cone roller assembly 32 on the other side decreases, causing the rotary frame 2 to swing along the running direction of the belt. The rotatable roller mechanism 3 drives the rotary frame 2 to rotate toward the deviated side. When the rotary frame 2 forms a certain angle with the running direction of the belt, the friction force on the cone roller on the rotary frame 2 will act on the belt in the opposite direction, and the roller mechanism 3 will generate a centering friction force on the conveyor belt, so that the belt runs in the center.

[0040] In some embodiments, the rotating assembly 4 includes a rotating shaft core 41 disposed on the top surface of the middle part of the cross beam frame 11 and a shaft core sleeve 42 fixedly mounted on the adjusting beam frame 21, the shaft core sleeve 42 is sleeved on the rotating shaft core 41 in the middle part of the cross beam frame 11, and a bearing is mounted on the rotating shaft core 41. The top of the shaft core sleeve 42 can further be vertically locked with a locking bolt 43 to prevent the rotating shaft core 41 and the shaft core sleeve 42 from falling off. Thus, the fixed frame 1 and the rotating frame 2, which are both symmetrically arranged, are rotated through the central rotating assembly 4, and the operating angle of the rotating frame 2 can be flexibly rotated, which is convenient for rapid return when the conveyor belt 6 is offset.

[0041] In some embodiments, the adjusting beam 21 is symmetrically provided with long waist holes 211, and the adjusting beam 21 is connected to the hanging frame 22 through the long waist holes 211 and bolts. Furthermore, the hanging frame 22 is a two-section connecting rod structure, and the middle of the two sections is fixed by a bolt shaft 221. The two-section connecting rod structure of the hanging frame 22 can adjust the lateral expansion, vertical drop distance and installation angle with the roller mechanism 3. The installation position of the hanging frame 22 in the long waist hole 211 of the adjusting beam 21 can directly adjust the lateral installation distance position of the roller mechanism 3, so that it fits the conveyor belt as closely as possible; the angle between the tapered roller assembly and the horizontal can be adjusted within the range of 35° to 40°, which can ensure that a certain tension is maintained between the roller mechanism 3 and the conveyor belt.

[0042] In some embodiments, an adjusting screw 121 is vertically installed on one side of the support frame 12, and both ends of the crossbeam frame 11 are connected to the support frame 12 through the adjusting screw 121. The support frame 12 can be a Z-shaped structure with a vertical middle end, which is used to ensure that the entire fixed frame 1 is parallel to the field frame 5. The adjusting screw 121 can adjust the overall height and horizontality of the fixed frame 1. The height of the support frame 12 is adjusted by adjusting the adjusting screw 131 of the support frame 12, and then the height of the rotary frame 2 is adjusted so that its bottom roller mechanism 3 fits the conveyor belt.

[0043] In some embodiments, transverse telescopic frames 111 are provided at both ends of the crossbeam frame 11, and both ends of the crossbeam frame 11 are connected to the support frame 12 through the transverse telescopic frames 111. The crossbeam frame 11 and the transverse telescopic frame 111 can be round tubes or square tubes, and one end of the transverse telescopic frame 111 can be inserted into the tube of the crossbeam frame 11 and locked by at least four fastening screws. The transverse telescopic frame 111 is connected to the support frame 12 to achieve left and right adjustment of the crossbeam frame 11, ensuring the alignment of the fixed frame 1 and the on-site frame 5 for hoisting and transportation.

[0044] In some embodiments, the straight roller assembly 31 includes a straight roller frame 311 and two straight rollers 312 mounted in parallel on the straight roller frame 311. In some embodiments, the conical roller assembly 32 includes a conical roller frame 321 and a conical roller 322 mounted on the conical roller frame 321; the diameter of the conical roller 322 is thin at the outer end and thick at the inner end. The straight roller 312 is a steel straight roller. The main function of the straight roller assembly 31 is to hold up the conveyor belt 6. The double straight roller design in the middle can provide better stability for the hoisting conveyor belt.

[0045] The cone roller 322 is a rubber cone roller. The bottom of the cone roller bracket 321 is connected to the straight roller assembly 31 through a bolt shaft, and the outer side is connected to the hanging frame 22 through bolts. During the rotation of the cone roller 322 in contact with the belt, the linear speed difference at both ends can generate a pulling force in the middle of the belt; the shell of the cone roller 322 is coated with a layer of natural rubber, which has low hardness and high friction, and can provide greater friction for the cone roller 322.

[0046] Furthermore, the two conical roller frames 321 of the conical roller assembly 32 are respectively connected to the two ends of the straight roller assembly, and the other end of the conical roller frame 321 is connected to the hanging frame 22 .

[0047] The product structure of this utility model is simple and reliable, and it can be applied in harsh working conditions such as mines; it can reduce belt deviation and material spillage, avoid material waste, save economic costs, improve the working environment, and meet environmental protection requirements; it can reduce abnormal downtime caused by conveyor belt deviation problems, improve production efficiency, reduce the loss of conveyor belts and their structural parts, and extend the service life of conveyor belts and structural parts. It can reduce the labor intensity of on-site personnel and reduce labor and time costs.

[0048] It can meet the bandwidth: B1000-B2400mm, suitable for conveyor belts with cold and hot vulcanized joints, suitable for belt speeds within 4.5m / s, and working environment temperature range above -50℃.

[0049] The specific embodiments in the present invention are merely explanations of the present invention, and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A lifting type conveyor belt automatic return device, characterized in that: The invention comprises a fixed frame (1), a rotary frame (2), a roller mechanism (3) and an on-site frame (5), wherein the fixed frame comprises a crossbeam frame (11) and two support frames (12) symmetrically mounted at both ends of the crossbeam frame, the bottom of the support frames being fixedly connected to the on-site frame, and the on-site frame being vertically symmetrically fixed to both sides of the conveyor belt; the rotary frame comprises an adjustment beam frame (21) and two hanging frames (22) symmetrically mounted at both ends of the adjustment beam frame; the middle part of the adjustment beam frame is rotationally connected to the middle part of the crossbeam frame via a rotating assembly (4); the roller mechanism comprises a straight roller assembly (31) and two tapered roller assemblies (32) mounted on both sides of the straight roller assembly, and the outer ends of the two tapered roller assemblies are fixedly connected to both sides of the rotary frame.

2. The automatic return device for the hoisting conveyor belt according to claim 1 is characterized in that: The rotating assembly comprises a rotating shaft core (41) arranged on the top surface of the middle part of the cross beam frame and a shaft core sleeve (42) fixedly installed on the adjusting beam frame, the shaft core sleeve is sleeved on the rotating shaft core, and a bearing is installed on the rotating shaft core.

3. The automatic return device for a hoisting conveyor belt according to claim 1 is characterized in that: The adjusting beam frame is symmetrically provided with long waist holes (211), and the adjusting beam frame is connected with the hanging frame through the long waist holes and bolts.

4. The automatic return device for a hoisting conveyor belt according to claim 1 is characterized in that: The hanging frame is a two-section connecting rod structure, and the middle of the two sections is fixed by a bolt shaft (221).

5. The automatic return device for a hoisting conveyor belt according to claim 1 is characterized in that: An adjusting screw rod (121) is vertically installed on one side of the support frame, and both ends of the crossbeam frame are connected to the support frame through the adjusting screw rod.

6. The automatic return device for a hoisting conveyor belt according to claim 1, characterized in that: Transverse telescopic frames (111) are arranged at both ends of the crossbeam frame, and both ends of the crossbeam frame are connected to the support frame through the transverse telescopic frames.

7. The automatic return device for a hoisting conveyor belt according to claim 1, characterized in that: The straight roller assembly comprises a straight roller frame (311) and two straight rollers (312) mounted in parallel on the straight roller frame.

8. The automatic return device for a hoisting conveyor belt according to claim 1, characterized in that: The conical roller assembly comprises a conical roller frame (321) and a conical roller (322) mounted on the conical roller frame; the diameter of the conical roller is thin at the outer end and thick at the inner end.

9. The automatic return device for a hoisting conveyor belt according to claim 8, characterized in that: The tapered roller is a rubber tapered roller.

10. The automatic return device for a hoisting conveyor belt according to claim 8, characterized in that: One end of the two tapered roller frames is respectively connected to the two ends of the straight roller assembly, and the other end is connected to the hanging frame.

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