Plane turning belt conveyor

Abstract

The utility model relates to a plane turning belt conveyor which comprises a machine frame, a conveying belt and a plurality of sliding type carrier roller supports, each sliding type carrier roller support comprises a sliding frame and a sliding frame base fixedly connected to the machine frame, the sliding frame is provided with a transverse long hole, the sliding frame base is fixedly connected with a pin shaft inserted into the long hole, and the pin shaft is fixedly connected with the conveying belt. A bottom carrier roller and side carrier rollers located on the two sides of the bottom carrier roller are connected to the sliding frame in a coupling mode, the two side carrier rollers are arranged in a V shape, a connecting rod is hinged to one end of the sliding frame, and the connecting rod is hinged to the machine frame. Abrasion of the conveying belt can be reduced, the running resistance of the whole machine is reduced, the deviation adjusting performance is good, and the problems of deviation, large abrasion, short service life and the like of the conveying belt of the belt conveyor for a long time are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyors, and particularly refers to a planar turning belt conveyor. Background Technique

[0002] In the excavation of coal mine underground roadways and the tunneling of coal mining roadways in the past two years, a new process of tunneling with a shield machine has been adopted; the transportation system supporting the shield machine after tunneling also needs to be updated accordingly. The straight section and the use of multiple belts in a lapped manner can no longer meet the transportation requirements of the shield machine tunneling. Therefore, the planar turning operation of the belt conveyor is a new type of planar turning belt conveyor that can meet the supporting transportation requirements of the shield machine tunneling roadway. The slip type idler support, gantry type belt pressing device, and suspended return idler support for planar turning are the key components of the belt conveyor for planar turning. Specifically, in the planar turning operation of the belt conveyor, the slip type idler support, gantry type belt pressing device, and suspended return idler support for planar turning play the roles of adjusting the belt centering, preventing deviation, and preventing the belt from turning over. The cost accounts for 10%-20% of the total equipment cost. Specifically, in the planar turning operation of the belt conveyor, the curvature radius of the planar turning of the belt conveyor is calculated according to the law of force balance, and the minimum turning curvature radius is;

[0003]

[0004] The above calculation results show that due to the change in the mass of the material line, the turning curvature radius is also constantly changing, which is a variable value. The curvature radii required for the belt conveyor to turn when it is unloaded and fully loaded vary greatly. During the planar turning operation of the belt conveyor, the loads on the slip type idler support, gantry type belt pressing device, and suspended return idler support for planar turning are extremely complex. The slip type idler support, gantry type belt pressing device, and suspended return idler support for planar turning play a role in supporting the belt to transport materials, and at the same time, there is also the resistance of operation. Affected by the turning curvature radius and the belt strength, they also bear the centripetal force passing through the belt and the idlers to adjust the belt deviation, etc. Therefore, the quality of the slip type idler support, gantry type belt pressing device, and suspended return idler support for planar turning directly affects the overall performance and operation cost of the belt conveyor.

[0005] The design of key parameters for sliding idler brackets, gantry belt pressing devices, and suspended return idler brackets used in planar turns of belt conveyors directly affects the conveyor's operating performance, belt lifespan, and running resistance. In China, traditional alignment idler brackets are commonly used for belt conveyors. These have poor alignment performance, cause significant belt wear, and increase overall running resistance by more than 15%. They also consume unnecessary power and energy. In particular, the wear on the conveyor belt necessitates replacement approximately two years earlier than normal maintenance (the conveyor belt accounts for 30-50% of the total machine cost). This results in very high operating costs, which is unacceptable to users. Especially when the turning radius is smaller than the design calculation requirements, planar turns cannot be achieved.

[0006] To achieve automatic belt correction during planar turning of belt conveyors, reduce belt wear, and ensure smooth and reliable material transport, we have developed a new type of planar turning belt conveyor to address the aforementioned problems associated with belt conveyor operation during planar turning. Utility Model Content

[0007] This invention addresses the shortcomings of existing technologies by providing a planar turning belt conveyor.

[0008] This utility model is achieved through the following technical solution: a planar turning belt conveyor is provided, including a frame, a conveyor belt, and multiple sliding idler supports. The sliding idler support includes a sliding frame and a sliding frame base fixed to the frame. The sliding frame has a transverse elongated hole. A pin is fixed to the sliding frame base and inserted into the elongated hole. A bottom idler and side idlers located on both sides of the bottom idler are shafted on the sliding frame. The two side idlers are arranged in a V-shape. A connecting rod is hinged to one end of the sliding frame, and the connecting rod is hinged to the frame.

[0009] As an optimization, both ends of the sliding frame are axially connected to guide wheels.

[0010] As an optimization, the elongated hole is an arc-shaped elongated hole.

[0011] As an optimization, multiple gantry-type pressing devices are also included, each comprising a gantry frame fixed to the machine frame and a pressing roller mounting frame fixed to the gantry frame, wherein a pressing roller located above the conveyor belt is fixed to the pressing roller mounting frame.

[0012] As an optimization, a sliding sleeve that slides laterally on the gantry is fixed to the pressure roller mounting bracket. The sliding sleeve is connected to the gantry by bolts, and the gantry has multiple bolt connection holes in the transverse direction.

[0013] As an optimization, it also includes multiple return roller supports, each of which includes a return frame and a return frame base fixed to the frame. The middle part of the return frame is hinged to the return frame base, and two return rollers arranged in a V-shape are shafted on the return frame.

[0014] As an optimization, both ends of the return frame are axially connected to return belt pulleys.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a planar turning belt conveyor, which can achieve planar turning at any angle, minimizing the number of devices on the same transport line. Especially in coal mines using shield tunneling technology and implementing new tunneling techniques, the continuous operation of the shield machine in different roadways requires a planar turning belt conveyor.

[0016] This invention enables the minimum curvature radius planar turning of belt conveyors, which can reduce belt wear, lower the overall running resistance, and improve the alignment performance, thus solving the long-standing problems of belt misalignment, high wear, and short lifespan in belt conveyors. Attached Figure Description

[0017] Figure 1 This is a top view of the present invention;

[0018] Figure 2 This is a side view of one end of the driving part of this utility model;

[0019] Figure 3 This is a side view of one end of the tail section of this utility model;

[0020] Figure 4 This utility model Figure 1 Sectional view of plane AA;

[0021] Figure 5 This is a front view of the sliding idler roller bracket of this utility model;

[0022] Figure 6 This is another front view of the sliding idler roller bracket of this utility model;

[0023] Figure 7 This is a front view of the sliding frame of this utility model;

[0024] Figure 8 This is a front view of the guide wheel of this utility model;

[0025] Figure 9 This is a front view of the return idler roller bracket of this utility model;

[0026] Figure 10 This is a front view of the gantry-type belt pressing device of this utility model;

[0027] Figure 11 This is a front view of the pressure roller of this utility model;

[0028] As shown in the figure:

[0029] 1. Drive section, 2. Tensioning section, 3. Conveyor belt, 4. Sliding idler bracket, 41. Sliding frame, 42. Long hole, 43. Sliding frame base, 44. Pin, 45. Guide roller, 46. Side idler, 47. Bottom idler, 48. Connecting rod, 5. Gantry pressing device, 51. Gantry frame, 52. Pressing roller mounting frame, 53. Pressing roller, 54. Sliding sleeve, 6. Return idler bracket, 61. Return frame, 62. Return idler, 63. Return belt guide roller, 64. Return frame base, 7. Longitudinal beam, 8. Frame, 9. Tail end. Detailed Implementation

[0030] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0031] like Figures 1-11 As shown, this utility model discloses a planar turning belt conveyor, including a frame 8, a drive unit 1, a tail section 9, a conveyor belt 3, multiple sliding idler supports 4, and multiple return idler supports 6. The drive unit 1 and the tail section 9 are located at the two ends of the belt conveyor, respectively. The conveyor belt 3 passes around the drive unit and the tail section 9, and is supported on the upper layer by the sliding idler supports 4. The return idler supports 6 support the lower layer of the return belt. The drive unit provides power to the entire belt conveyor, and the tensioning unit tensions the conveyor belt 3 to ensure the tension of the conveyor belt.

[0032] Multiple frames 8 are provided and arranged along the arc of the turn to realize turning conveying. Adjacent frames 8 are connected by longitudinal beams 7.

[0033] The sliding idler bracket 4 is mounted on the frame 8, thereby enabling turning conveying through multiple sliding idler brackets 4, such as... Figure 4-8 As shown, the sliding idler support 4 includes a sliding frame 41 and a sliding frame base 43 fixed to the frame 8. The sliding frame 41 is a U-shaped bent frame. Guide rollers 45 are axially connected to both the left and right ends of the sliding frame 41, which play a lateral positioning role for the conveyor belt 3.

[0034] The sliding frame 41 is shaft-connected to a bottom idler roller 47 and side idler rollers 46 located on both sides of the bottom idler roller 47. The two side idler rollers 46 are arranged in a V-shape, and the bottom idler roller 47 in the middle is set horizontally. Therefore, the three idler rollers are arranged in a U-shape, and the conveyor belt 3 is supported on the three idler rollers.

[0035] like Figure 2 , 3As shown, the sliding frame 41 has a transverse elongated hole 42, and a pin 44 inserted into the elongated hole 42 is fixed to the sliding frame base 43. In this embodiment, the elongated hole 42 is an arc-shaped elongated hole. Therefore, the sliding frame 41 can be offset to the left or right by a certain distance.

[0036] One end of the sliding frame 41 is hinged to a connecting rod 48, which is hinged to the frame 8. Figure 2 , 3 As shown, in this embodiment, one end of the connecting rod 48 is hinged to the right end of the sliding frame 41, and the other end is hinged to the right end of the frame 8, thereby providing stable support for the sliding frame 41.

[0037] like Figure 4 , 9 As shown, the return idler support 6 includes a return frame 61 and a return frame base 64 fixed to the frame 8. The middle part of the return frame 61 is hinged to the return frame base 64. Two return idlers 62 arranged in a V-shape are shafted onto the return frame 61. Return belt pulleys 63 are shafted to both ends of the return frame 61.

[0038] like Figure 10 , 11 As shown, it also includes multiple gantry-type pressing devices 5. The gantry-type pressing device 5 includes a gantry frame 51 fixed to the frame 8 and a pressing roller mounting frame 52 fixed to the gantry frame 51. The gantry frame 51 includes a transverse column above the conveyor belt and two columns supporting the crossbeam. The columns are fixed to both sides of the frame 8 by bolts. The columns have multiple bolt holes. The height of the gantry frame 51 is adjusted by bolting the components to different bolt holes.

[0039] The pressure roller 53, located above the conveyor belt 3, is fixedly connected to the pressure roller mounting bracket 52. It is inclined, as shown in the image. Figure 4 As shown, the pressure roller 53 is located above the outer side of the conveyor belt. The distance between the pressure roller 53 and the conveyor belt ensures that the conveyor belt does not flip when the machine body turns on a flat surface.

[0040] The pressure roller mounting frame 52 is fixedly connected to a sliding sleeve 54 that slides laterally on the gantry frame 51. The sliding sleeve 54 is connected to the gantry frame 51 by bolts, and the gantry frame 51 has multiple bolt connection holes in the horizontal direction. By connecting to different bolt connection holes, the left and right positions of the pressure roller mounting frame 52 can be adjusted to adapt to different conveyor belt widths.

[0041] The method of use of this utility model: The sliding idler bracket 4 supports the upper conveyor belt 3 to realize the conveying of materials. When the conveyor belt 3 shifts to one side, the guide roller 45 prevents the conveyor belt from moving outward. When the outer side of the conveyor belt 3 separates from the side idler 46 at the turning point, the pressure roller 53 applies a downward force to the conveyor belt, always keeping the conveyor belt from leaving the idler. Thus, the idler drives the conveyor belt, causing the conveyor belt to move towards the center. The conveyor belt applies an outward pushing force to the guide roller 45 on the sliding idler bracket 4, causing the sliding bracket 41 to shift outward, such as... Figure 6 The state shown causes the sliding frame 41 to tilt inward, thereby achieving the purpose of correction and reducing the wear of the conveyor belt.

[0042] The return idler bracket 6 supports the lower return belt. The drive unit at one end of the belt conveyor drives the conveyor belt 3 to move through the rotating roller. A passive roller is installed on the tail 9 at the other end of the belt conveyor. A tensioning part 2 is installed near the drive unit at the head of the conveyor to achieve tensioning of the conveyor belt 3.

[0043] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A planar turning belt conveyor, characterized in that: The system includes a frame (8), a conveyor belt (3), and multiple sliding idler brackets (4). The sliding idler brackets (4) include a sliding frame (41) and a sliding frame base (43) fixed to the frame (8). The sliding frame (41) has a transverse elongated hole (42). The sliding frame base (43) has a pin (44) fixed to it and inserted into the elongated hole (42). The sliding frame (41) is axially connected to a bottom idler (47) and side idlers (46) located on both sides of the bottom idler (47). The two side idlers (46) are arranged in a V-shape. One end of the sliding frame (41) is hinged to a connecting rod (48), which is hinged to the frame (8).

2. A planar turning belt conveyor according to claim 1, characterized in that: Both ends of the sliding frame (41) are axially connected to guide wheels (45).

3. A planar turning belt conveyor according to claim 1, characterized in that: The elongated hole (42) is an arc-shaped elongated hole.

4. A planar turning belt conveyor according to claim 1, characterized in that: It also includes multiple gantry-type pressing devices (5), each gantry-type pressing device (5) including a gantry frame (51) fixed on the frame (8) and a pressing roller mounting frame (52) fixed on the gantry frame (51), wherein a pressing roller (53) is fixed on the pressing roller mounting frame (52) above the conveyor belt (3).

5. A planar turning belt conveyor according to claim 4, characterized in that: The pressure roller mounting bracket (52) is fixed with a sliding sleeve (54) that slides laterally on the gantry frame (51). The sliding sleeve (54) is connected to the gantry frame (51) by bolts, and the gantry frame (51) has multiple bolt connection holes in the transverse direction.

6. A planar turning belt conveyor according to claim 1, characterized in that: It also includes multiple return roller brackets (6), each of which includes a return frame (61) and a return frame base (64) fixed to the frame (8). The middle part of the return frame (61) is hinged to the return frame base (64), and two return rollers (62) arranged on the left and right are shafted on the return frame (61). The two return rollers (62) are arranged in a V-shape.

7. A planar turning belt conveyor according to claim 6, characterized in that: Both ends of the return frame (61) are connected to return belt pulleys (63).

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