A double-layer cross-belt turning device

Abstract

The present invention discloses a double-layer cross-belt turning device, comprising two groups of entrainment devices, two groups of first belt turning devices, and a second belt turning device; the two groups of entrainment devices, the two groups of first belt turning devices, and the second belt turning device are each provided with two independent passages; the two groups of belt turning devices are symmetrically arranged between the two groups of entrainment devices; the second belt turning device is arranged between the two groups of belt turning devices; the conveyor belts on both sides simultaneously pass through the first passages of the entrainment devices at both ends and run in opposite directions, pass through the first belt turning device and the second belt turning device in turn, and turn the conveyor belts 180 degrees, and then pass through the second passages of the opposite entrainment device and then go around into the tail devices on both sides. By designing a double-layer cross-belt turning device, this solution can realize the opposite-direction operation of the same conveyor, meet the operation requirements of the opposite excavation conveyors, and greatly improve the efficiency of the excavation work.

Description

Technical Field

[0001] The patent of this invention belongs to the technical field of belt conveyors, and specifically relates to a double-layer cross-belt turning device. Background Art

[0002] With the rapid development of rapid excavation technology, continuous conveyors supporting mechanized excavation have been widely used. In engineering practice, some tunnels often need to be excavated from the intersection of the main and branch tunnels to both sides of the branch tunnel. The current equipment cannot take into account the slag discharge of two excavation working faces at the same time. It is difficult to realize that a belt conveyor can meet the slag discharge needs of two-way excavation at the same time, thus reducing the efficiency of the excavation work.

[0003] It can be seen that how to improve the efficiency of slag discharge at the excavation working face is a problem that needs to be solved in this field. Summary of the Invention

[0004] In view of the technical problem that the existing excavation working face has low excavation efficiency because it cannot meet the slag discharge requirements of the two excavation working faces, the purpose of this solution is to provide a double-layer cross-belt turning device, which can realize the opposite operation of the same conveyor, meet the operation requirements of the opposite excavation conveyors, greatly improve the efficiency of the excavation work, and overcome the problems existing in the existing technology.

[0005] In order to achieve the above-mentioned object, the present invention provides a double-layer cross-belt turning device, comprising two sets of entraining devices, two sets of first belt turning devices, and a second belt turning device; the two sets of entraining devices, the two sets of first belt turning devices, and the second belt turning device are each provided with two independent passages; the two sets of belt turning devices are symmetrically arranged between the two sets of entraining devices; the second belt turning device is arranged between the two sets of belt turning devices;

[0006] The conveyor belts on both sides pass through the first threading channel of the entraining devices at both ends at the same time and run towards each other, passing through the first belt turning device and the second belt turning device in turn, turning the conveyor belts 180 degrees, and then passing through the second threading channel of the entraining device on the opposite side and winding into the tail devices on both sides.

[0007] Furthermore, the two groups of entraining devices are respectively the first group of entraining devices and the second group of entraining devices, each group of entraining devices includes an entraining device frame, side supports and two groups of entraining rollers; the two groups of entraining rollers are symmetrically arranged on the entraining device frame through the side supports to form horizontal upper and lower layers of entraining rollers; the upper and lower conveyor belts are respectively clamped by the two groups of entraining rollers.

[0008] Furthermore, the two groups of first belt turning devices respectively include a belt turning isolation frame, a belt turning isolation roller and a roller support; the roller support is arranged on the belt turning isolation frame; the belt turning isolation roller is arranged inside the roller support at an angle of 45°, and cooperates with the roller support to form two independent conveyor belt threading channels, and the upper and lower layers of conveyor belts can pass through the two conveyor belt threading channels at an angle of 45° at the same time.

[0009] Furthermore, a belt turning and blocking roller is provided between the belt turning isolation frame and the belt turning isolation roller for isolating the conveyor belt from the belt turning isolation frame.

[0010] Furthermore, the second belt turning device includes a belt turning device frame and a vertical rod; the vertical rod is vertically arranged in the middle of the belt turning device frame and connected to the belt turning device frame, and the belt turning device frame is divided into two independent penetration channels by the vertical rod.

[0011] Furthermore, the second belt turning device also includes isolation adjustment rollers for isolating the conveyor belt from both sides of the belt turning device frame; the isolation adjustment rollers are located on both sides of the vertical rod and are arranged on the belt turning device frame.

[0012] Furthermore, the second belt turning device further comprises a belt turning stopper for isolating the conveyor belt from the bottom of the belt turning device frame; the belt turning stopper is transversely arranged at the bottom of the belt turning device frame.

[0013] Furthermore, the top of the second belt turning device is equipped with an adjustment device, which includes an adjustment component and a drive component; the adjustment component is driven and connected to the two isolation adjustment rollers, and the drive component drives the connection adjustment component, which can drive the adjustment component to drive the two isolation adjustment rollers to adjust the spacing relative to the vertical stick.

[0014] Furthermore, the drive assembly includes a fixed shield, a rotating rod, a support bearing and an adjusting gear; the support bearing is cooperatively connected to the side wall of the fixed shield; the screwing end of the rotating rod passes through the support bearing and is located inside the fixed shield; the adjusting gear is arranged inside the fixed shield and is cooperatively connected to the screwing end of the rotating rod, and the adjusting gear can be driven to rotate by screwing the rotating rod.

[0015] Furthermore, the adjustment assembly includes a seating seat, a lead screw, two sliders and two slide grooves; the two slide grooves are respectively arranged on the seating seat and at the bottom of the two isolation adjustment rollers;

[0016] The placement seat is correspondingly arranged above the isolation adjustment roller and the vertical rod; the two sliders are symmetrically arranged on the slide groove of the placement seat and are correspondingly connected to the two isolation adjustment rollers at the bottom. When the sliders slide towards or oppositely in the slide groove, the two isolation adjustment rollers can be driven to move towards or oppositely relative to the vertical rod;

[0017] The two sliders are connected by a screw. After the fixed shield of the driving assembly is matched with the mounting seat, the screw can be matched with the adjusting gear. The transmission assembly between the two sliders can be formed by matching the adjusting gear and the screw.

[0018] The double-layer cross-belt turning device provided by the present invention can realize the opposite operation of the same conveyor by designing the double-layer cross-belt turning device, meet the operation requirements of the opposite excavation conveyors, and greatly improve the efficiency of the excavation work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a side view of the overall structure of the double-layer cross-belt turning device;

[0021] Figure 2 This is a three-dimensional diagram of the overall structure of the double-layer cross-belt turning device;

[0022] Figure 3 This is a schematic diagram of the structure of the clamping device in the double-layer cross-belt turning device;

[0023] Figure 4 Schematic diagram of the structure of the second belt turning device in the double-layer cross belt turning device;

[0024] Figure 5 This is a schematic diagram of the assembly of the adjustment device in the double-layer cross-belt turning device;

[0025] Figure 6 This is a schematic diagram of the structure of the adjustment component in the double-layer cross-belt turning device;

[0026] Figure 7 This is a schematic diagram of the appearance of the adjustment component in the double-layer cross-belt turning device;

[0027] Figure 8 This is a schematic diagram of the internal structure of the adjustment component in the double-layer cross-belt turning device.

[0028] The following is a description of the components in the accompanying drawings:

[0029] 1. First entrainment device 2. First belt turning device 3. Second belt turning device 4. Third belt turning device 5. Second entrainment device 6. Adjustment device 7. Turning stop rod 8. Isolation and adjustment roller 9. Vertical rod 10. Turning device frame 11. Entrainment roller 12. Side support 21. Entrainment device frame 13. Placement seat 14. Rotary rod 15. Support bearing 16. Fixed shield 17. Slider 18. Install end cover 19. Screw 20. Adjustment gear DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0031] In response to the technical problem of low excavation efficiency due to the inability of the existing excavation working face to meet the slag discharge needs of the two excavation working faces, this solution provides a double-layer cross-belt turning device. By designing a double-layer cross-belt turning device, the opposite operation of the same conveyor can be realized, meeting the operation requirements of the opposite excavation conveyors and greatly improving the efficiency of the excavation work.

[0032] See also Figure 1-Figure 2 The double-layer cross-belt turning device provided in this solution includes a first clamping device 1, a second clamping device 5, a first turning device 2, a second turning device 3, and a third turning device 4.

[0033] The first entraining device 1 and the second entraining device 2 are respectively located at the two ends of the double-layer cross-belt turning device, and are used to clamp the upper and lower conveyor belts.

[0034] The two sets of entrainment devices have the same structure, see Figure 3 , respectively including a carrying device frame 21, a side support 12 and a carrying roller 11.

[0035] Furthermore, the entrainment device frame 21 is formed by connecting two groups of symmetrical triangular frames, which serves as the base and mounting support of the entrainment device.

[0036] The entraining rollers 11 are arranged on the entraining device frame 21 through the side supports 12; in this solution, four rollers are connected in pairs to form two groups of entraining rollers 11, and are symmetrically arranged on the side supports 12 to form horizontal upper and lower layers of entraining rollers 11.

[0037] A conveyor belt threading channel can be formed between every two entrainment rollers 11. The two sides of the conveyor belt can be clamped by the two entrainment rollers 11, and the upper and lower conveyor belts can be clamped separately by two groups of entrainment rollers.

[0038] The first and second conveyor belts of the conveyor pass through the upper entrainment rollers 11 of the first entrainment device 1 and the second entrainment device 5 at the same time and then run inward, and pass through the first turning device 2, the second turning device 3, the third turning device 4 or the third turning device 4, the second turning device 3, and the first turning device 2 in turn, and then pass through the second entrainment device 5 and the lower entrainment rollers 11 of the first entrainment device 1 respectively, and go around into the tail of the machine at both ends and run towards the head funnel, and repeat this cycle to realize the operation of the opposite working surfaces of the upper and lower conveyor belts, meeting the operation requirements of the opposite tunneling conveyors.

[0039] Furthermore, the first belt turning device 2 and the third belt turning device 4 are symmetrically arranged between the two groups of entraining devices, and both the first belt turning device 2 and the third belt turning device 4 can satisfy the requirement of 45° turning of the conveyor belt.

[0040] The first belt turning device 2 and the third belt turning device 4 have the same structure, and respectively include a belt turning isolation frame, a belt turning isolation roller, a belt turning and blocking roller, and a roller support.

[0041] The belt turning isolation frame is composed of two sets of symmetrical triangular frames connected by roller supports. The belt turning isolation rollers are set inside the roller supports at an angle of 45°. The upper and lower conveyor belts can pass through the upper and lower ends of the belt turning isolation rollers at an angle of 45° at the same time. The upper and lower conveyor belts are isolated by the belt turning isolation rollers to achieve stable 45° belt turning operation.

[0042] At the same time, the belt turning and blocking roller is located between the belt turning isolation roller and the belt turning isolation frame and is set inside the roller support at an angle of 45°. This can prevent the conveyor belt from contacting the belt turning isolation frame during the conveyor belt turning process, causing wear of the conveyor belt.

[0043] The second belt turning device 3 is arranged between the first belt turning device 2 and the third belt turning device 4. The second belt turning device 3 can realize a 90° turning of the conveyor belt.

[0044] See also Figure 4 The second belt turning device 3 includes a belt turning device frame 10, isolation adjustment rollers 8, vertical rods 9 and belt turning stop rods 7.

[0045] The belt turning device frame 10 is composed of two groups of symmetrical triangular frames connected by cross beams. The vertical rod 9 is vertically arranged in the middle of the belt turning device frame 10 and connected to the belt turning device frame 10, so that the belt surfaces of the two layers of conveyor belts can pass vertically through both sides of the vertical rod 9 at the same time. The two layers of conveyor belts are isolated by the vertical rod 9 to achieve stable 90° belt turning operation.

[0046] The isolation adjustment rollers 8 are symmetrically arranged on both sides of the vertical rod 9 and connected to the belt turning device frame 10. They cooperate with the vertical rod 9 to form two independent conveyor belt passages, which can achieve the entrainment, blocking and isolation effects on the two layers of conveyor belts.

[0047] At the same time, the belt turning stopper 7 is horizontally arranged at the bottom of the belt turning device frame 10. The isolation adjustment roller 8 and the belt turning stopper 7 can prevent the conveyor belt from contacting the side and bottom surfaces of the belt turning device frame 10 during the 90° belt turning operation, causing wear of the conveyor belt.

[0048] In addition, if the distance between the two isolation adjustment rollers 8 and the vertical rod 9 installed on the second turning device 3 is not appropriate, the conveyor belt will swing left and right in the gap between the vertical rod 9 and the two isolation adjustment rollers 8 during the operation of the conveyor belt, causing the 90° turning and entraining device frame to vibrate, which will lead to instability of the conveyor belt during transportation.

[0049] Therefore, in this solution, an adjusting device 6 is provided on the second belt turning device 3 , which can adjust the distance between the two isolation adjustment rollers 8 on the second belt turning device 3 .

[0050] See also Figure 5-Figure 8 The adjusting device 6 includes an adjusting component and a driving component; the adjusting component is driven and connected to the two isolation adjusting rollers 8, and the driving component drives the connected adjusting component, which can drive the adjusting component to adjust the spacing between the two isolation adjusting rollers 8 relative to the vertical stick 9.

[0051] The driving assembly includes a fixed shield 16 , a rotating rod 14 , a supporting bearing 15 , and an adjusting gear 20 .

[0052] The support bearing 15 is cooperatively connected with the side wall of the fixed shield 16 , and the screwing end of the rotary rod 14 passes through the support bearing 15 and is located inside the fixed shield 16 .

[0053] The adjusting gear 20 is disposed inside the fixed shield 16 and is connected to the screwing end of the rotary rod 14 . The adjusting gear 20 can be driven to rotate by screwing the rotary rod 14 .

[0054] The adjustment assembly includes a seating seat 13 , a lead screw 19 and two sliders 17 .

[0055] The placement seat 13 is correspondingly arranged above the isolation and adjustment roller 8 and the vertical rod 9. A slide groove is provided in the middle of the placement seat 13. Two sliders 17 are symmetrically arranged on the slide groove of the placement seat 13 and are correspondingly connected to the two isolation and adjustment rollers 8 at the bottom. When the sliders 17 slide toward or oppositely in the slide groove, the two isolation and adjustment rollers 8 can be driven to move toward or oppositely relative to the vertical rod 9.

[0056] The two sliders 17 are connected by a screw 19. After the fixed shield 16 of the driving assembly is matched with the mounting seat 13 and matched with the mounting end cover 18, the screw 19 can be matched with the adjusting gear 20. The adjusting gear 20 and the screw 19 are matched with each other to form a transmission assembly between the two sliders 17, which can drive the slider 17 to drive the two isolation adjustment rollers 8 to move.

[0057] At the same time, the bottom of the two isolation adjustment rollers 8 are equipped with a slide groove and are set on the belt turning device frame 10. Therefore, the top and bottom of the two isolation adjustment rollers 8 can slide synchronously, and the distance between the two isolation adjustment rollers 8 and the vertical rod 9 can be adjusted.

[0058] In addition, the entraining device frame 21, the belt turning isolation frame, and the belt turning device frame 10 in this solution preferably use triangular three-dimensional frames as supports, which can ensure the reliability of the conveyor belt operation and avoid the device frame being pulled over during the belt turning process.

[0059] The following example illustrates the process in a specific application, but it should be noted that the following scheme is only an example of an embodiment of the present scheme and does not constitute a limitation to the present scheme.

[0060] First, the working surface of the first side conveyor belt enters the gap between the upper entrainment roller 11 of the first entrainment device 1 after passing through the redirecting roller. At the same time, the working surface of the second side conveyor belt enters the gap between the upper entrainment roller 11 of the second entrainment device 5 after passing through the redirecting roller.

[0061] The first side conveyor belt and the second side conveyor belt pass through the lower side of the belt turning isolation rollers in the first belt turning device 2 and the third belt turning device 3 respectively for 45° turning, and then pass through the second belt turning device 3 for 90° turning. At this time, the conveyor belt surfaces on both sides are in a vertical state relative to the ground.

[0062] Then, the first side conveyor belt and the second side conveyor belt pass through the third turning device 4 and the upper side of the turning isolation roller in the first turning device 2 at the same time to perform a 45° turning. At this time, the non-working surfaces of the first side and second side conveyor belts face upward.

[0063] Finally, the first side conveyor belt and the second side conveyor belt pass through the gap between the second entrainment device 1 and the lower entrainment roller 11 of the first entrainment device 5, and go around the tail of the machine to run in the direction of the head funnel, and repeat this cycle to achieve the cross-turning of the same conveyor belt, and ensure that the center lines of the conveyor belts are in a straight line after the conveyor belts are crossed and redirected, and the running direction of the conveyor belts meets the conditions for the opposite operation of the opposite tunneling conveyors.

[0064] In addition, the flipping of the conveyor belt surface is conducive to the cleaning of sticky materials on the conveyor belt, ensuring the safe operation of conveyors running in opposite directions.

[0065] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer cross-belt turning device, characterized in that: It includes a first entraining device and a second entraining device, two sets of first belt turning devices, and a second belt turning device; the first entraining device and the second entraining device, the two sets of first belt turning devices, and the second belt turning device are each provided with two independent passages; The first clamping device and the second clamping device are respectively located at the two ends of the double-layer cross-belt turning device, and are used to clamp the upper and lower conveyor belts; The two sets of first belt turning devices are symmetrically arranged between the first belt entraining device and the second belt entraining device; the second belt turning device is arranged between the two sets of first belt turning devices; The first and second conveyor belts of the conveyor pass through the upper entrainment rollers of the first and second entrainment devices at both ends of the double-layer cross-belt turning device at the same time, and then run inward, and pass through two groups of first and second belt turning devices in turn. After the first belt turning device turns the conveyor belt 180 degrees, it passes through the lower entrainment rollers of the second entrainment device and the first entrainment device respectively, and goes around the tail of the machine at both ends to run towards the head funnel, and repeats this cycle, so that the facing working surfaces of the upper and lower conveyor belts can run.

2. A double-layer cross-belt turning device according to claim 1, characterized in that: Each set of entraining devices includes an entraining device frame, side supports and two sets of entraining rollers; the two sets of entraining rollers are symmetrically arranged on the entraining device frame through the side supports to form horizontal upper and lower layers of entraining rollers; the upper and lower conveyor belts are respectively clamped by the two sets of entraining rollers.

3. A double-layer cross-belt turning device according to claim 1, characterized in that: The two groups of first belt turning devices respectively include a belt turning isolation frame, a belt turning isolation roller and a roller support; the roller support is arranged on the belt turning isolation frame; the belt turning isolation roller is arranged inside the roller support at an angle of 45°, and cooperates with the roller support to form two independent conveyor belt threading channels, and the upper and lower layers of conveyor belts can pass through the two conveyor belt threading channels at an angle of 45° at the same time.

4. A double-layer cross-belt turning device according to claim 3, characterized in that: A belt turning and blocking roller is provided between the belt turning isolation frame and the belt turning isolation roller, and is used to isolate the conveyor belt from the belt turning isolation frame.

5. The double-layer cross-belt turning device according to claim 1, characterized in that: The second belt turning device includes a belt turning device frame and a vertical rod; the vertical rod is vertically arranged in the middle of the belt turning device frame and connected to the belt turning device frame, and the belt turning device frame is divided into two independent penetration channels by the vertical rod.

6. A double-layer cross-belt turning device according to claim 1, characterized in that: The second belt turning device also includes isolation adjustment rollers for isolating the conveyor belt from both sides of the belt turning device frame; the isolation adjustment rollers are located on both sides of the vertical rod and are arranged on the belt turning device frame.

7. The double-layer cross-belt turning device according to claim 1, characterized in that: The second belt turning device further comprises a belt turning stopper for isolating the conveyor belt from the bottom of the belt turning device frame; the belt turning stopper is transversely arranged at the bottom of the belt turning device frame.

8. The double-layer cross-belt turning device according to claim 1, characterized in that: The top of the second belt turning device is equipped with an adjustment device, which includes an adjustment component and a drive component; the adjustment component is driven and connected to the two isolation adjustment rollers, and the drive component drives the connection adjustment component, which can drive the adjustment component to drive the two isolation adjustment rollers to adjust the spacing relative to the vertical stick.

9. The double-layer cross-belt turning device according to claim 8, characterized in that: The driving assembly includes a fixed shield, a rotating rod, a support bearing and an adjusting gear; the support bearing is cooperatively connected with the side wall of the fixed shield; the screwing end of the rotating rod passes through the support bearing and is located inside the fixed shield; the adjusting gear is arranged inside the fixed shield and is cooperatively connected with the screwing end of the rotating rod, and the adjusting gear can be driven to rotate by screwing the rotating rod.

10. The double-layer cross-belt turning device according to claim 8, characterized in that: The adjustment assembly includes a seating seat, a lead screw, two sliders and two slides; the two slides are respectively arranged on the seating seat and at the bottom of the two isolation adjustment rollers; The placement seat is correspondingly arranged above the isolation adjustment roller and the vertical rod; the two sliders are symmetrically arranged on the slide groove of the placement seat and are correspondingly connected to the two isolation adjustment rollers at the bottom. When the sliders slide towards or oppositely in the slide groove, the two isolation adjustment rollers can be driven to move towards or oppositely relative to the vertical rod; The two sliders are connected by a screw. After the fixed shield of the driving assembly is matched with the mounting seat, the screw can be matched with the adjusting gear. The transmission assembly between the two sliders can be formed by matching the adjusting gear and the screw.

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