Wheel-rail belt conveyor with slewing device and slewing method thereof

Abstract

The present application relates to the field of wheel-rail belt conveyor, especially to a wheel-rail belt conveyor with a rotating device and a rotating method thereof, and provides a wheel-rail belt conveyor with a rotating device, which comprises a rotating frame and a tensioning frame, a driving rotating shaft is arranged on the rotating frame, a traction wheel and a driving transition wheel are arranged on the rotating shaft, a driven transition wheel is arranged on the tensioning frame, a flexible cable is wound on the driving transition wheel and the driven transition wheel, and a closed loop cable is formed between the driving transition wheel and the driven transition wheel, the upper edge of the closed loop cable is parallel to the first upper guide rail of the conveyor and is higher than the first upper guide rail, so that the wheel of the trolley can run off the first upper guide rail when entering the rotating device, the speed of the wheel of the trolley is gradually reduced, the impact of the wheel on the guide rail during rotation is reduced, the noise is reduced, and the service life of the wheel and the guide rail is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of belt conveyor braking, in particular to a wheel-rail belt conveyor with a rotating device and a rotating method thereof. BACKGROUND

[0002] The wheel-rail belt conveyor is a new type of belt conveyor. Compared with the traditional belt conveyor, it is an advanced belt conveyor technology proposed to overcome the indentation resistance of the conveying belt and the internal extrusion resistance of the material. The wheel-rail belt conveyor changes the conveying support structure, replaces the roller set with a supporting car, eliminates 61% of the indentation resistance and 9% of the extrusion resistance of the material passing through the roller, and the rolling resistance of the car wheel and the track is much smaller than the indentation resistance of the roller. Therefore, 18% of the roller bearing resistance will also be reduced, thereby greatly reducing the belt strength and running power, and prolonging the conveying distance. However, in the wheel-rail belt conveyor system, the supporting car needs to be used in a reciprocating cycle, and a mechanism must be provided to ensure the reciprocating cycle of the supporting car. Chinese patent 201620246099.8 discloses a track belt conveyor with a rotating wheel structure. The rotating wheel structure disclosed in the application is two, and the two rotating wheel structures are oppositely arranged. Each rotating wheel structure includes an arc-shaped inner guide rail and an arc-shaped outer guide rail coaxially arranged with the arc-shaped inner guide rail. The arc-shaped inner guide rail and the arc-shaped outer guide rail form a space for the supporting car to pass through. The two ends of the upper guide rail are respectively connected to the two arc-shaped inner guide rails, and the two ends of the lower guide rail are respectively connected to the two arc-shaped outer guide rails, thereby ensuring the circular movement of the supporting car on the guide rail. However, when the supporting car passes through the rotating wheel, the wheel moves from the horizontal guide rail to the arc-shaped guide rail, which causes wheel-rail impact, reduces the service life of the wheel and the guide rail, and generates noise. SUMMARY

[0003] Therefore, the main purpose of the present application is to provide a wheel-rail belt conveyor with a rotating device and a rotating method thereof.

[0004] To achieve the above object, the application provides a wheel-rail belt conveyor with a rotating device, the wheel-rail belt conveyor is provided with a trolley and a rotating device at the head and tail, the rotating device comprises a guide rail set, a driving transition wheel and a driven transition wheel, and a flexible cableway, in each rotating device, the flexible cableway is wound on the driving transition wheel and the driven transition wheel, and a closed loop cableway is formed between the driving transition wheel and the driven transition wheel; the guide rail set comprises a first upper guide rail, a second upper guide rail, a first lower guide rail and a second lower guide rail; the upper edge of the closed loop cableway is parallel to the first upper guide rail and higher than the first upper guide rail; the bottom of the trolley is provided with a U-shaped groove, and the trolleys are uniformly distributed on the wheel-rail belt conveyor.

[0005] Preferably, the guide rail set is a pair of front and rear parallel guide rails arranged side by side on the support frame, the first upper guide rail and the first lower guide rail are linear, and the second upper guide rail and the second lower guide rail are arranged in an arc shape, and an arc-shaped channel is formed between the second upper guide rail and the second lower guide rail along the movement direction of the upper belt, and the trolley completes the turnover in the arc-shaped channel.

[0006] Preferably, the connecting area of the first lower guide rail and the second lower guide rail is provided with a transition pad, the two ends of the transition pad are arranged in a wedge shape, and the thickness of the transition pad is a thin-thick-thin transition structure from one end to the other end.

[0007] Preferably, the rotating device further comprises a rotating frame, a tensioning frame arranged on one side of the rotating frame, and a support frame, the rotating frame is provided with a driving rotating shaft, the driving rotating shaft is provided with a traction wheel and a driving transition wheel, and the driving transition wheel is two, i.e., a first driving transition wheel and a second driving transition wheel, which are respectively located on the left and right sides of the traction wheel.

[0008] Preferably, the outer ring wall of the traction wheel is provided with an annular groove, and a steel wire rope for traction is arranged in the annular groove.

[0009] Preferably, the inner side of the tensioning frame is respectively provided with a sliding groove, a driven rotating shaft parallel to the driving rotating shaft is installed in the sliding groove, and two driven transition wheels are arranged on the driven rotating shaft; an adjusting mechanism is arranged on the corresponding sliding groove of the tensioning frame near the rotating frame side for adjusting the distance between the driven rotating shaft and the driving rotating shaft.

[0010] Preferably, the diameter of the driven transition wheel is smaller than the diameter of the driving transition wheel, and the distance between the two driven transition wheels is equal to the distance between the two driving transition wheels.

[0011] The outer ring wall of the driving transition wheel and the driven transition wheel is provided with an annular groove, and the flexible cable is arranged in the annular groove.

[0012] Preferably, the trolley comprises a first frame and a second frame, wherein the corresponding bottom of the first frame and the second frame is provided with a first groove for arranging the cable and a second groove for arranging the traction steel wire, the first groove is arranged in a U shape and is provided with a wear-resistant lining, and the U-shaped groove is arranged in four, and the distance between the U-shaped grooves on the same frame is equal to the distance between two driven transition wheels.

[0013] The application also provides a rotation method of the wheel-rail belt conveyor, specifically, in the operation process of the wheel-rail belt conveyor, the trolley supports the rubber belt, the trolley moves along the guide rail to the running direction of the rubber belt under the friction force of the rubber belt, simultaneously drives the steel wire arranged at the bottom of the trolley to move, the steel wire in turn drives the traction wheel to rotate, and then the traction wheel and the driving transition wheel rotate coaxially on the rotation shaft, under the action of the tension force and the friction force, the flexible cable moves together with the driving transition wheel and drives the driven transition wheel to rotate; when the trolley enters the rotation device located at one end of the conveyor, that is, the trolley moves to the driven transition wheel, because the upper edge of the cable is arranged to be higher than the first upper guide rail, the U-shaped groove at the bottom of the trolley starts to engage with the cable, the trolley wheel starts to be out of contact with the first upper guide rail, the trolley is supported by the flexible cable and moves with the cable, at this time, the speed of the trolley wheel gradually decreases due to being out of contact with the first upper guide rail, and after passing through the arc-shaped channel formed between the second upper guide rail and the second lower guide rail, the trolley runs to the first lower guide rail and completes the first rotation; similarly, at the other end of the wheel-rail belt conveyor, the rotation device as described above is also arranged, when the trolley runs from the first lower guide rail to the driving transition wheel, the trolley wheel gradually contacts the transition lining of the first lower guide rail, the U-shaped groove at the bottom of the trolley gradually climbs onto the lower flexible cable and runs with the cable, under the action of the driving transition wheel, smoothly passes through the arc-shaped channel formed between the second upper guide rail and the second lower guide rail, runs to the first upper guide rail and completes the second rotation, and the rotation is repeated to realize the reciprocating rotation of the trolley.

[0014] The beneficial effects of the present application are: when the wheel track belt conveyor trolley moves to the driven transition wheel, the trolley bottom U-shaped groove starts to engage with the cableway, the trolley wheel starts to disengage from the first upper guide rail, the trolley is supported by the flexible cableway and moves with the cableway, at this time the trolley wheel speed gradually decreases, and after passing through the arc-shaped channel formed between the second upper guide rail and the second lower guide rail, the trolley runs to the first lower guide rail to complete the rotation. The rotation device provided at both ends of the wheel track belt conveyor is increased with the main and driven transition wheels and the flexible cableway and the like, which ensures that the trolley engages with the flexible cableway when changing direction in the rotation device, the wheel does not contact the guide rail, and moves with the flexible cableway, and a transition pad is arranged at the connection area of the first lower guide rail and the second lower guide rail to realize smooth transition and change of direction of the trolley; the transition pad is wedge-shaped at both ends, and the thickness of the transition pad gradually changes from thin to thick to thin.

[0015] Therefore, the rotation device and method adopted by the present application are stable, low noise, small impact force, avoid the wheel-rail impact when the trolley wheel moves from the horizontal guide rail to the arc-shaped guide rail during rotation and change of direction, reduce noise, and improve the service life of the wheel and the guide rail, and solve the technical problems in the background art. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0017] Figure 1 is a schematic diagram of the overall installation structure of the present application.

[0018] Figure 2 is a schematic diagram of the structure of the rotation device at one end of the present application.

[0019] Figure 3 is a schematic diagram of the structure of the rotation device at one end of the present application.

[0020] Figure 4 is a schematic diagram of the structure of the trolley in the present application.

[0021] Figure 5 is a schematic diagram of the installation structure of the transition pad in the present application.

[0022] Explanation of reference numerals: 1 - rotating device, 2 - guide rail set, 3 - support frame, 4 - trolley, 5 - steel wire rope; 11 - rotating frame, 12 - tensioning frame, 13 - rotating shaft, 14 - traction wheel, 15 - driving transition wheel, 16 - sliding groove, 17 - driven rotating shaft, 18 - driven transition wheel, 19 - adjusting mechanism, 20 - cableway; 21 - first upper guide rail, 22 - second upper guide rail, 23 - first lower guide rail, 24 - second lower guide rail, 25 - transition cushion; 41 - first frame, 42 - second frame, 43 - first groove, 44 - second groove, 45 - wheel. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0025] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features.

[0026] In the present embodiment, as shown in Figure 1 , Figure 2 and Figure 3 , the present application provides a wheel-rail belt conveyor with a rotating device, comprising a rotating frame 11, a tensioning frame 12 arranged on one side of the rotating frame 11, a guide rail set 2 and a support frame 3, wherein the rotating frame 11 is provided with a driving rotating shaft 13, the driving rotating shaft 13 is provided with a traction wheel 14 and a driving transition wheel 15, and the driving transition wheel 15 is two, i.e. a first driving transition wheel 15 and a second driving transition wheel 15, which are respectively arranged on the left and right sides of the traction wheel 14.

[0027] In the present embodiment, as shown in Figure 2 , the outer ring wall of the traction wheel 14 is provided with an annular groove, and the annular groove is provided with a steel wire rope 5 for traction. The outer ring wall of the traction wheel 14 is provided with an annular groove, which is beneficial to limit the position of the steel wire rope 5 and prevent the steel wire rope 5 from falling off the traction wheel 14.

[0028] In the embodiment, as shown in Figure 2 and Figure 3 , the inside of the tension frame 12 is respectively provided with a sliding groove 16, and a driven rotating shaft 17 parallel to the driving rotating shaft 13 is installed in the sliding groove 16. The driven rotating shaft 17 is provided with two driven transition wheels 18. The corresponding sliding groove 16 on the tension frame 12 is provided with an adjusting mechanism 19 on the side of the rotating frame 11 for adjusting the distance between the driven rotating shaft 17 and the driving rotating shaft 13. It is beneficial to adjust the tension of the closed loop cable 20 and control the height of the trolley 4.

[0029] In the embodiment, as shown in Figure 2 , the outer ring wall of the driving transition wheel 15 and the driven transition wheel 18 is provided with an annular groove, and the annular groove is provided with a flexible cable 20. It is beneficial to fix the flexible cable 20, and the flexible cable 20 and the adjusting device are used in cooperation to effectively control the tension of the cable 20. The distance between the trolley 4 and the guide rail can be adjusted and controlled during the rotating process of the trolley 4, which is beneficial to achieve the technical purpose of the application.

[0030] As shown in Figure 2 and Figure 3 , the diameter of the driven transition wheel 18 is smaller than the diameter of the driving transition wheel 15, and the distance between the two driven transition wheels 18 is equal to the distance between the two driving transition wheels 15. In the rotating device 1, the flexible cable 20 is wound on the driving transition wheel 15 and the driven transition wheel 18, and a closed loop cable 20 is formed between the driving transition wheel 15 and the driven transition wheel 18. The upper edge of the closed loop cable 20 is parallel to the first upper guide rail 21 and higher than the first upper guide rail 21. The technical purpose is to set the distance between the two driven transition wheels 18 equal to the distance between the two driving transition wheels 15, which is beneficial to form two parallel closed loop cable 20 rings, and is beneficial to the operation of the trolley 4 on the closed loop cable 20 ring. The upper edge is parallel to the first upper guide rail 21 and higher than the first upper guide rail 21, which is beneficial to the engagement of the U-shaped groove at the bottom of the trolley 4 with the cable 20. The wheels 45 of the trolley 4 are separated from the first upper guide rail 21, and the speed of the wheels 45 of the trolley 4 is gradually reduced, reducing the impact on the guide rail when the wheels 45 rotate.

[0031] The wheel rail belt conveyor with the rotating device is left-right symmetrical at both ends of the conveyor. After the first rotation, the trolley 4 moves forward along the first lower guide rail 23 and gradually enters the rotating device 1 at the other end of the conveyor under the support of the cable 20 to perform the second rotation and change direction.

[0032] As shown in Figure 2 and Figure 3As shown, the guide rail group 2 is a pair of front and rear parallel guide rails, and is arranged in parallel on the support frame 3, the guide rail includes a first upper guide rail 21, a second upper guide rail 22, a first lower guide rail 23 and a second lower guide rail 24, the first upper guide rail 21 and the first lower guide rail 23 are linear, and the second upper guide rail 22 and the second lower guide rail 24 are arranged in an arc shape, and an arc-shaped channel is formed between the second upper guide rail 22 and the second lower guide rail 24 along the movement direction of the rubber belt, and the trolley 4 completes the turning in the arc-shaped channel. The arc-shaped channel is used to prevent the trolley 4 from being separated from the track when turning, and the first upper guide rail 21 and the first guide rail are both installed on the support frame and the tensioning frame 12 through the pressing plate, the two ends of the first upper guide rail 21 are respectively connected with the two arc-shaped second upper guide rails 22, and the two ends of the first lower guide rail 23 are respectively connected with the two arc-shaped second lower guide rails 24, so that the trolley 4 can reciprocate.

[0033] As shown in the figure, Figure 5 The connecting area of the first lower guide rail 23 and the second lower guide rail 24 is provided with a transition pad 25, the two ends of the transition pad 25 are arranged in a wedge shape, and the thickness of the transition pad 25 is a thin-thick-thin transition structure from one end to the other end. It is beneficial to prevent impact when the trolley 4 wheel 45 starts to contact the transition pad 25, and to prevent impact when the trolley 4 wheel 45 moves from the transition pad 25 to the second guide rail.

[0034] The present application also provides a turning method of a wheel-rail belt conveyor, wherein the wheel-rail belt conveyor is provided with a turning device 1 at the head and tail, respectively, as described above, in each turning device 1, the flexible cableway 20 is wound on the driving transition wheel 15 and the driven transition wheel 18, and a closed loop cableway 20 is formed between the driving transition wheel 15 and the driven transition wheel 18, the upper edge of the closed loop cableway 20 is parallel to the first upper guide rail 21 and higher than the first upper guide rail 21. Figure 4 As shown in the figure, the trolley 4 includes a first trolley frame 41 and a second trolley frame 42, wherein the corresponding bottom of the first trolley frame 41 and the second trolley frame 42 is provided with a first recess 43 for arranging the cableway 20 and a second recess 44 for arranging the traction steel wire rope 5, the first recess 43 is arranged in a U shape and is provided with a wear-resistant pad, and the U-shaped recess is arranged in four, and the distance between the U-shaped recesses on the same trolley frame is equal to the distance between the two driven transition wheels 18.

[0035] The application discloses a rotating method of a wheel-rail belt conveyor, which comprises the following steps: supporting the belt by a trolley 4 during the operation of the wheel-rail belt conveyor; moving the trolley 4 along the guide rail to the running direction of the belt under the friction of the belt; moving the steel wire rope 5 arranged at the bottom of the trolley 4; rotating the traction wheel 14 driven by the steel wire rope 5; rotating the driven transition wheel 18 driven by the flexible cableway 20; setting the upper edge of the cableway 20 higher than the first upper guide rail 21; starting the engagement between the U-shaped groove at the bottom of the trolley 4 and the cableway 20; starting the disengagement between the wheel 45 of the trolley 4 and the first upper guide rail 21; supporting the trolley 4 by the flexible cableway 20; moving the trolley 4 along the cableway 20; gradually reducing the speed of the wheel 45 of the trolley 4 after the wheel 45 passes through the arc-shaped channel between the second upper guide rail 22 and the second lower guide rail 24; running to the first lower guide rail 23; completing the first rotation; setting the rotating device 1 at the other end of the wheel-rail belt conveyor; running the trolley 4 from the first lower guide rail 23 to the driven transition wheel 15; gradually contacting the wheel 45 of the trolley 4 with the transition pad 25 of the first lower guide rail 23; gradually climbing the U-shaped groove at the bottom of the trolley 4 to the lower flexible cableway 20; running along the cableway 20; stably passing through the arc-shaped channel between the second upper guide rail 22 and the second lower guide rail 24 under the action of the driven transition wheel 15; running to the first upper guide rail 21; completing the second rotation; and repeatedly rotating the trolley 4. The rotating method has the advantages that the rotating and switching of the trolley 4 are stable, the noise is low, the impact force is small, the wheel-rail impact of the wheel 45 of the trolley 4 when the wheel 45 moves from the horizontal guide rail to the arc-shaped guide rail is avoided, the noise is reduced, and the service life of the wheel 45 and the guide rail is prolonged.

[0036] The beneficial effects of the present application are: when the wheel track belt conveyor trolley moves to the driven transition wheel, the U-shaped groove at the bottom of the trolley is engaged with the cableway, and the trolley wheels start to disengage from the first upper guide rail, so that the trolley is supported by the flexible cableway and moves along the cableway. At this time, the speed of the trolley wheels gradually decreases, and after passing through the arc-shaped channel formed between the second upper guide rail and the second lower guide rail, the trolley runs to the first lower guide rail and completes the rotation. The rotation device at both ends of the wheel track belt conveyor is provided with main and driven transition wheels and a flexible cableway, which ensures that the trolley is engaged with the flexible cableway when it changes direction in the rotation device, the wheels do not contact the guide rail, and the trolley moves along the flexible cableway. Transition pads are arranged at the connection area between the first lower guide rail and the second lower guide rail to realize smooth transition and direction change of the trolley. The transition pads are wedge-shaped at both ends, and the thickness of the transition pads gradually transitions from thin to thick to thin. During the process of the trolley passing through the rotation device, the speed of the wheels gradually decreases from fast to slow, and then reversely rotates on the first lower guide rail.

[0037] Therefore, the rotation device and method of the present application can slow down the wheels when the trolley rotates and changes direction, and then reversely accelerate the wheels. When the wheels run to the rotation position, the rotation is stable, the noise impact force is small, the wheel-rail impact when the trolley wheels move from the horizontal guide rail to the arc-shaped guide rail during rotation and direction change is avoided, the noise is reduced, the service life of the wheels and guide rails is improved, and the technical problems in the background art are solved.

[0038] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent device transformation or direct / indirect application in other related technical fields based on the inventive concept of the present application and the content of the specification and drawings is included in the patent protection scope of the present application.

Claims

1. A wheel-rail belt conveyor with a slewing device, characterized in that: The wheel-rail belt conveyor is equipped with a trolley, guide rail assembly, and slewing device at both ends. The slewing device includes a guide rail assembly, a traction wheel, a driving transition wheel, a driven transition wheel, and a flexible cableway. There are two driven and two driving transition wheels. In each slewing device, the flexible cableway is wound around the driving and driven transition wheels, forming a closed-loop cableway between them. The guide rail assembly includes a first upper guide rail, a second upper guide rail, a first lower guide rail, and a second lower guide rail. The upper edge of the closed-loop cableway is parallel to and higher than the first upper guide rail. The outer ring wall of the traction wheel... The system is equipped with an annular groove, within which a traction steel wire rope is installed. The diameter of the driven transition wheel is smaller than that of the driving transition wheel, and the distance between the two driven transition wheels is equal to the distance between the two driving transition wheels. The outer ring walls of both the driving and driven transition wheels are provided with annular grooves, and the flexible cableway is installed within these annular grooves. The trolley consists of multiple trolleys evenly distributed on the wheel-rail belt conveyor. Each trolley includes a first frame and a second frame, with corresponding bottom sections of the first and second frames each having a first groove for mounting the cableway and a second groove for mounting the traction steel wire rope.

2. The wheel-rail belt conveyor as described in claim 1, characterized in that: The guide rail assembly consists of a pair of parallel guide rails arranged side-by-side on the support frame. The first upper guide rail and the first lower guide rail are linear, while the second upper guide rail and the second lower guide rail are arc-shaped. Along the direction of movement of the upper belt, an arc-shaped channel is formed between the second upper guide rail and the second lower guide rail, and the trolley completes its flipping and rotation within the arc-shaped channel.

3. The wheel-rail belt conveyor as described in claim 2, characterized in that: A transition pad is provided in the connection area of ​​the first lower guide rail and the second lower guide rail. The two ends of the transition pad are wedge-shaped, and the thickness of the transition pad transitions from one end to the other in a thin-thick-thin transition structure.

4. The wheel-rail belt conveyor as described in claim 3, characterized in that: The slewing device also includes a slewing frame, a tensioning frame and a support frame arranged on one side of the slewing frame. The slewing frame is equipped with an active slewing shaft, and the active slewing shaft is equipped with a traction wheel and an active transition wheel. There are two active transition wheels, namely a first active transition wheel and a second active transition wheel, which are located on the left and right sides of the traction wheel, respectively.

5. The wheel-rail belt conveyor as described in claim 4, characterized in that: The tensioning frame is provided with sliding grooves on its inner side. A driven rotating shaft parallel to the active rotating shaft is installed in the sliding groove. Two driven transition wheels are provided on the driven rotating shaft. On the side of the tensioning frame near the rotating frame, there is an adjustment mechanism to adjust the distance between the driven rotating shaft and the active rotating shaft.

6. The wheel-rail belt conveyor as described in claim 5, characterized in that: The first groove is U-shaped and has a wear-resistant liner inside. There are four U-shaped grooves, and the distance between the U-shaped grooves on the same frame is equal to the distance between two driven transition wheels.

7. A method for rotating a wheel-rail belt conveyor, characterized in that: Using the wheel-rail belt conveyor as described in claim 6, during the operation of the wheel-rail belt conveyor, a trolley supports the belt. Under the friction of the belt, the trolley moves along the guide rail in the direction of belt travel, simultaneously driving the steel wire rope at the bottom of the trolley to move as well. The steel wire rope then drives the traction wheel to rotate, and the traction wheel and the active transition wheel rotate coaxially on the slewing shaft. Under the action of tension and friction, the flexible cableway moves along with the active transition wheel and drives the driven transition wheel to rotate. When the trolley enters the slewing device located at one end of the conveyor, that is, when the trolley moves to the driven transition wheel, because the upper edge of the cableway is set higher than the first upper guide rail, the U-shaped groove at the bottom of the trolley begins to mesh with the cableway, and the trolley wheels begin to engage with the first upper guide rail. Once the upper guide rail is disengaged, the trolley is supported by the flexible cableway and moves with it. At this time, the trolley's wheels gradually decrease in speed as they are disengaged from the first upper guide rail. After passing through the arc-shaped channel formed between the second upper and second lower guide rails, it runs to the first lower guide rail, completing the first rotation. Similarly, at the other end of the wheel-rail belt conveyor, when the trolley runs from the first lower guide rail to the active transition wheel, the trolley wheels gradually contact the transition pad of the first lower guide rail. The U-shaped groove at the bottom of the trolley gradually crawls onto the lower flexible cableway and follows the cableway. Under the action of the active transition wheel, it smoothly passes through the arc-shaped channel formed between the second upper and second lower guide rails and runs to the first upper guide rail, completing the second rotation. This cycle repeats continuously, realizing the trolley's reciprocating rotation.

Images