Belt conveyor middle transfer device

Abstract

This utility model discloses a mid-section transfer device for a belt conveyor, including a frame and a set of idlers mounted on the frame, as well as an idler traction device; the idler set includes three fixed idlers and one sliding idler. It aims to solve the technical problems of limited applicability, high maintenance costs, and time-consuming and labor-intensive operation in existing technologies. The length of the belt in this device is controlled by the displacement of the sliding idler, thereby adjusting the belt tension; the second fixed idler, vertically positioned above the first fixed idler, ensures that the belt output is not affected by the device itself, achieving a large-angle adaptation; and the space design for dropping materials from a height effectively solves the problem of easy belt breakage, thus reducing equipment maintenance costs.

Description

Technical Field

[0001] This application relates to the technical field of belt conveyors, and specifically relates to a middle transfer device for a belt conveyor. Background Art

[0002] In the scenario of ore material transportation in a mine, the transfer link of the conveyor (i.e., the change of transportation slope / direction) faces significant technical challenges. The belt of a traditional belt conveyor is designed to be concave during transportation. Direct slope change is likely to cause damage to the belt. At the same time, the fixed slope design is difficult to adapt to the undulating terrain of the roadway, and frequent modifications such as undercutting and roof bolting are required, resulting in high construction costs and long cycles. In addition, it is difficult to adjust the tension of the belt, which will greatly shorten the service life of the belt.

[0003] A patent document with a publication number of CN104444204A known to the inventor discloses a belt slope-changing device. By sequentially arranging a first pair of fixed legs and a second pair of fixed legs along the belt transmission direction in the concave section of the driving roadway, first rollers and second rollers with different heights are respectively arranged on them, and a pressure belt roller is arranged on any pair of fixed legs. At the same time, the fixed legs adopt an adjustable structure composed of a fixed pipe and a slidable movable pipe, and the rollers are fixed to the movable pipe to adjust the height, achieving the effect that the belt is supported by the high and low rollers and does not hang in the air when passing through the concave section, and the return belt is pressed by the pressure belt roller and does not rebound.

[0004] However, during the process of implementing the technical solution in the embodiments of this application, the inventors of this application found that the above technology has at least the following technical problems: on the one hand, all pairs of legs in the solution are in a fixed state, which makes it necessary for the two rollers to have a certain horizontal distance. This characteristic makes it unable to cope with large-angle slope changes and is difficult to flexibly respond when facing complex and changeable terrains. The slopes, undulations, etc. of different terrains vary greatly, but this solution cannot adapt through the dynamic adjustment of the pairs of legs and can only rely on the passive and inefficient method of redesigning the dimensions to meet different slope change requirements, which undoubtedly greatly increases the complexity of the design and the cost investment; on the other hand, the design of this device lacks the function of adjusting the tension of the belt. During actual operation, the belt is affected by various external forces. If it always maintains a fixed tension state, its internal stress cannot be adjusted in a timely manner. In the long run, the belt is extremely likely to shorten its service life due to problems such as excessive wear and fatigue, posing a serious threat to the stability and reliability of the entire device.

[0005] In summary, the existing mine transportation equipment still has obvious deficiencies in terms of angle adaptation flexibility, operation convenience, and long-term reliability, and there is an urgent need for a new device that can adapt to complex installation environments, reduce maintenance costs, and has high stability.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] In view of at least one of the above technical problems, this disclosure provides a mid-transfer device for a belt conveyor, which increases the variable angle of the conveyor and adjusts the belt tension by using multiple position limiting idlers and variable idlers, thus solving the problems of limited application scenarios and short belt life of traditional conveyors.

[0008] According to one aspect of this disclosure, a mid-transfer device for a belt conveyor is provided, comprising a frame, a set of idlers disposed at corresponding positions on the frame for adjusting the direction of movement of the conveyor belt, and an idler traction device; the frame includes a first frame near the gentle slope side of the roadway, a second frame near the steep slope side of the roadway, and a guide rail frame disposed between the first frame and the second frame; the idler set includes a first fixed idler and a second fixed idler disposed on the second frame, and a sliding idler slidably embedded in the guide rail frame and located below the plane of the first idler; the idler traction device is disposed on the first frame and is used to drive the sliding idler to slide correspondingly along the guide rail frame via a rope connected to the sliding idler by a winch; the conveyor belt is arranged in an S-shape, passing sequentially through the first fixed idler and the sliding idler.

[0009] Furthermore, the second fixed idler is positioned to contact the upper surface of the conveyor belt that has been redirected by the sliding idler.

[0010] Furthermore, the idler assembly also includes a third fixed idler located in the lower part of the second frame.

[0011] Furthermore, both the first frame and the second frame are provided with connecting plates for connecting other conveying equipment.

[0012] Furthermore, the fixed roller is fixed relative to the second frame by a roller fixing device, which includes a connecting frame, a central bearing, and fastening bolts.

[0013] Furthermore, the idler roller traction device includes a hand-operated ratchet tensioner for winding the rope.

[0014] Furthermore, the sliding idler roller is slidably mounted on the sliding frame via a sliding idler roller connector, the sliding idler roller connector including a slider slidably embedded in the sliding frame and a connecting ring fixedly connected to the slider and used to connect the rope.

[0015] One or more technical solutions provided in the embodiments of this application have at least one of the following technical effects or advantages:

[0016] 1. The adoption of three-stage fixed idlers effectively solves the problem of excessively small belt output angle in existing technologies, thereby expanding the adaptability range of the conveyor.

[0017] 2. By utilizing the idler roller traction device, the problem of existing conveyors being unable to adjust belt tension is effectively solved, thereby improving the service life of the belt.

[0018] 3. The hand-operated ratchet tensioner effectively solves the problem of time-consuming and labor-intensive movement of the idler roller traction device, thereby reducing the workload of workers.

[0019] 4. The design of dropping materials from a height effectively solves the problem of belt breakage, thereby reducing equipment maintenance costs.

[0020] In summary, this application systematically solves the technical problems of traditional conveyors, such as limited applicable scenarios, high maintenance costs, and time-consuming and labor-intensive use, through multi-dimensional innovations in directional freedom, belt tensioning devices, and traction tools. It provides a solution for conveyors that is adaptable to multiple scenarios and has a longer service life. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the transfer device in the middle of a belt conveyor in one embodiment of this application.

[0022] Figure 2 This is a schematic diagram illustrating a scenario application of the transfer device in the middle of a belt conveyor in one embodiment of this application.

[0023] In the above figures, 1 is the frame, 11 is the input end frame, 111 is the main body of the input end frame, 112 is the first connecting plate, 12 is the output end frame, 121 is the main body of the output end frame, 122 is the second connecting plate, 13 is the guide rail frame, 131 is the main body of the guide rail frame, and 132 is the mounting frame; 2 is the belt limiting idler group, 21 is the first fixed idler, 22 is the second fixed idler, 23 is the third fixed idler, 24 is the sliding idler, 25 is the idler fixing device, 26 is the sliding idler connector, 261 is the slider, and 262 is the connecting ring; 3 is the traction device, 31 is the hand-operated ratchet tensioner, and 32 is the tensioner fixing plate; 4 is the conveyor wheel group, 5 is the horizontal section conveyor device, 6 is the steep slope conveyor device, and 7 is the recovery idler. Detailed Implementation

[0024] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first," "second," etc., used in this application are used to distinguish the described objects and do not have any sequential or technical meaning. And the terms "connection" and "linkage," unless otherwise specified, include both direct and indirect connections (linkages).

[0025] Unless otherwise specified, the unit modules (components, structures, mechanisms) or sensors involved in the following embodiments are all conventional commercially available products.

[0026] This application provides a mid-transfer device for a belt conveyor, solving the problems of limited applicability, high maintenance costs, and time-consuming and labor-intensive use in the prior art. By setting an outer-mounted reversing idler and a sliding idler, the idea of ​​multi-angle adaptation and belt tension adjustment is realized.

[0027] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0028] The length of the belt in this device is controlled by the displacement of the sliding idler, thereby adjusting the belt tension; the output of the belt is not affected by the device itself by the second fixed idler, which is set vertically to the first fixed idler, thereby achieving the purpose of large-angle adaptation.

[0029] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] Structural Description:

[0032] This example discloses a mid-section transfer device for a belt conveyor; see [link to relevant documentation]. Figure 1 It includes a frame 1, a belt-guided idler assembly 2 mounted on the frame 1, and a traction device 3 for controlling the sliding of the idler on a fixed track. Their specific structures are as follows:

[0033] Frame 1 includes a frame base 14, an input end frame 11 welded to the left side of the frame base 14, an output end frame 12 welded to the right side of the frame base 14, and a guide rail frame 13 installed between the two side frames. The input end frame 11 includes an input end frame body 111 and a first connecting plate 112 installed on the upper part of the input end frame body 111 for connecting the left-side conveying device. The output end frame 12 includes an output end frame body 121 and a second connecting plate 122 installed on the lower part of the output end frame body 121 for connecting the right-side conveying device. The guide rail frame 13 includes a guide rail frame body 131 composed of two layers of parallel channel steel and two sets of mounting frames 132 welded to the upper surface of the guide rail frame body 131 for connecting the conveyor rollers located above the transfer device in the middle of the belt conveyor.

[0034] The belt limiting idler group 2 includes three fixed idlers and one sliding idler. The first fixed idler 21 is located at the top of the output end frame body 121, the second fixed idler 22 is located in the upper middle part of the output end frame body 121, slightly lower than the first fixed idler, and the third fixed idler 23 is located in the lower middle part of the output end frame body 121, with some space left at the bottom to ensure normal operation after the belt is installed. The first, second and third idlers are all fixed to the output end frame body 121 by the idler fixing device 25. The two sliding idler connectors 26 are located between the two layers of channel steel of the guide rail frame body 131. They include sliders 261 and connecting rings 262 installed on the left side of sliders 261. The sliding idler 24 is connected between the two sliders 261 and moves with the sliders.

[0035] The traction device 3 includes a tensioner fixing plate 32 installed in the middle of the input end frame body 111 and a hand-operated ratchet tensioner 31 mounted on the tensioner fixing plate 32. One end of the rope is connected to the connecting ring 262 of the sliding roller connector 26, and the other end is connected to the hand-operated ratchet tensioner 31.

[0036] Assembly and Workflow:

[0037] 1. Device installation: such as Figure 2 As shown, release the ratchet tensioner 31 and pull the movable roller 24 with the slider 261 to the leftmost side, i.e., the side closest to the output end frame 12. Install two sets of conveyor wheel sets 4 on the two mounting brackets 132 above the guide rail frame body 131. Connect the first connecting plate 112 on the left side to the conveying device 5 of the horizontal / gradient section with bolts. Connect the second connecting plate 122 on the right side to the conveying device 6 of the large angle section with bolts. Install a baffle plate on the right side of the second fixed roller 22 to prevent material from rolling back and jamming the device. Install a belt recovery roller 7 below the first connecting plate so that the upper surface of the recovery roller 7 is level with the lower surface of the third fixed roller 23.

[0038] The belt is pulled from the conveyor device 5 on the left horizontal section to this device, passes the conveyor wheel set 4 above the mounting frame 132, and reaches the first fixed idler 21. After passing the first fixed idler 21, it is pulled from the left side below the first fixed idler 21 to the top of the sliding idler 24. The belt passes over its left side and is pulled out from its lower right side. After passing the second idler 22, it is pulled to the idler of the right-side steep slope conveyor device 6. After passing all the devices on the right, the belt is pulled from above the lower idler of the steep slope conveyor device 6, below the third fixed idler 23, to the top of the belt recovery idler 7 and connected to the conveyor device 5 on the left horizontal section, finally connecting the starting end and the ending end of the belt.

[0039] Tighten the belt by manually operating the ratchet tensioner 31 to achieve the required tension.

[0040] 1. Work process:

[0041] like Figure 2 As shown, during operation, the distance between the sliding idler and the fixed idler is controlled by operating the ratchet tensioner 31, thereby adjusting the belt tension. The belt enters the device from the left and is conveyed to the first fixed idler 21 by the rolling device installed above it. Through the rotation of the first fixed idler 21, the pulling of the sliding idler 24, and the rotation of the second fixed idler 22, the belt is conveyed to the steep incline conveying section. The belt conveyed back passes under the device, is rotated by the fixed idler 23, and then enters the horizontal conveying section via the recovery idler 7.

[0042] The material is conveyed by the belt from the conveyor device 5 on the left horizontal section, through the conveyor wheel group 4 installed above the device, to the first fixed idler roller 21. The material falls onto the steep slope conveyor device 6 on the right. Since the material is not conveyed upward at an angle, it will not accumulate here. It is then conveyed to a higher position by the steep slope conveyor device 6.

[0043] This utility model discloses a mid-section transfer device for a belt conveyor, including a frame and a set of idlers mounted on the frame, as well as an idler traction device; the idler set includes three fixed idlers and one sliding idler. It aims to solve the technical problems of limited applicability, high maintenance costs, and time-consuming and labor-intensive operation in existing technologies. The length of the belt in this device is controlled by the displacement of the sliding idler, thereby adjusting the belt tension; the second fixed idler, vertically positioned above the first fixed idler, ensures that the belt output is not affected by the device itself, achieving a large-angle adaptation; and the space design for dropping materials from a height effectively solves the problem of material accumulation, thus improving the production efficiency of the conveyor.

[0044] This device achieves significant technical effects through the following innovative design:

[0045] 1. The adoption of three-stage fixed idlers effectively solves the problem of excessively small belt output angle in existing technologies, thereby expanding the adaptability range of the conveyor.

[0046] 2. By utilizing the idler roller traction device, the problem of existing conveyors being unable to adjust belt tension is effectively solved, thereby improving the service life of the belt.

[0047] 3. The hand-operated ratchet tensioner effectively solves the problem of time-consuming and labor-intensive movement of the idler roller traction device, thereby reducing the workload of workers.

[0048] 4. The design of dropping materials from a height effectively solves the problem of belt breakage, thereby reducing equipment maintenance costs.

[0049] Although some preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0050] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from the spirit and scope of its inventive concept. Therefore, if such modifications and variations to this disclosure fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A midsection transfer for a belt conveyor, characterized in that The system includes a frame, a set of idlers positioned at corresponding locations on the frame for adjusting the direction of the conveyor belt, and an idler traction device. The frame includes a first frame near the gentle slope side of the roadway, a second frame near the steep slope side of the roadway, and a guide rail frame positioned between the first and second frames. The idler set includes a first fixed idler and a second fixed idler mounted on the second frame, and a sliding idler slidably embedded in the guide rail frame and located below the plane of the first fixed idler. The idler traction device is mounted on the first frame and is used to drive the sliding idler to slide along the guide rail frame via a rope connected to the sliding idler by a winch. The conveyor belt passes through the first fixed idler and the sliding idler in an S-shape in sequence.

2. The conveyor mid-transfer as claimed in claim 1, wherein, The second fixed idler is positioned to contact the upper surface of the conveyor belt that has been redirected by the sliding idler.

3. The conveyor mid-transfer of claim 1, wherein, The idler roller assembly also includes a third fixed idler roller located in the lower part of the second frame.

4. The conveyor mid-transfer of claim 1, wherein, Both the first frame and the second frame are provided with connecting plates for connecting other conveying equipment.

5. The conveyor mid- transfer of claim 1 wherein, The fixed roller is fixed to the second frame by a roller fixing device, which includes a connecting frame, a central bearing, and fastening bolts.

6. The conveyor intermediate transfer device according to claim 1, characterized in that, The idler roller traction device includes a hand-operated ratchet tensioner for winding the rope.

7. The conveyor mid-transfer of claim 1, wherein, The sliding idler roller is slidably mounted on the frame via a sliding idler roller connector. The sliding idler roller connector includes a slider slidably embedded in the frame and a connecting ring fixedly connected to the slider and used to connect the rope.

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