Swivel type continuous feeding device and superconducting magnetic separator thereof

Abstract

The utility model relates to a swivel type continuous feeding device and a superconducting magnetic separator thereof, the swivel type continuous feeding device is provided with a plurality of medium boxes, every two adjacent medium boxes are connected together through a chain, the medium boxes are connected end to end to form a medium box ring, the medium box ring is erected on an annular track, a chain wheel is arranged, the chain wheel is in contact with one end of the medium box ring, and the other end of the medium box ring is in contact with the chain wheel. And the chain wheel drives the medium box ring to annularly move along the track. The superconducting magnetic separator comprises a superconducting magnet and a swivel type continuous feeding device; a horizontally moving medium box string is arranged on the upper portion of a medium box ring of the swivel type continuous ore feeding device, and the medium box string of the medium box ring penetrates through a superconducting magnet. According to the swivel type continuous ore feeding device and the superconducting magnetic separator thereof, collision among metals is eliminated as far as possible, so that the generation of metal chips or metal particles is reduced as far as possible, and the influence on magnetic separation is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of ore feeder used in superconducting magnetic separator, especially continuous ore feeder using rotating ring structure, and superconducting magnetic separator using the ore feeder, belong to superconducting magnetic separator technical field. BACKGROUND

[0002] Due to the three advantages of continuous ore feeding, vertical feeding and pulsating flow field, the rotating ring pulsating high gradient magnetic separator has the most extensive application in the field of coil electromagnetic separation equipment of normal conductor (the term is relative to superconducting conductor).

[0003] The rotating ring pulsating high gradient magnetic separator disclosed in Chinese patent publication No. CN2501580Y discloses one of the typical compositions and structures; the continuous ore feeding is due to the fact that the magnetic medium box can rotate continuously with the rotating ring, and the continuous rotation of the rotating ring is due to the arc-shaped magnetic poles, and the maximum allowable magnetic field strength between the magnetic poles depends on the saturation characteristics of the magnetic pole material.

[0004] Since the magnetic field strength far exceeds the saturation magnetic field strength of the magnetic pole material, the superconducting magnetic separator no longer uses magnetic poles, but only relies on coils of specified shapes to generate magnetic fields of specified shapes. Among them, the solenoid-shaped coil for generating strong magnetic field in cylindrical space is the preferred coil shape in superconducting magnetic separator due to its simple manufacturing process and low cost. In the earlier superconducting magnetic separator, the magnetic medium box periodically enters and leaves the strong magnetic field area with the reciprocating cylindrical tank body, realizing periodic ore feeding. The reciprocating superconducting magnetic separator disclosed in Chinese patent publication No. CN104437848A discloses one of the typical compositions and structures; the internal slurry of the device mainly flows horizontally, and the pipeline is relatively long, making it difficult for the reciprocating superconducting magnetic separator to be suitable for the separation of easily settling minerals.

[0005] In order to make the superconducting magnetic separator have the ability of continuous ore feeding and vertical feeding like the rotating ring normal conductor magnetic separator, and have comparable production capacity, the rotating ring continuous ore feeding superconducting magnetic separator disclosed in Chinese patent publication No. CN211838454U discloses a new type of superconducting magnetic separator structure; the medium boxes are connected by chains, and a sufficient number of medium boxes are distributed on the entire racetrack-shaped track; the specific way of rotating the medium boxes along the racetrack-shaped track is: the motor drives the chain wheel, the chain wheel teeth drive the bearing installed on the side surface of the medium box, thereby realizing the continuous movement of each medium box on the racetrack-shaped track.

[0006] The above-mentioned rotating ring continuous ore feeding structure has undergone long-term continuous operation test under the working condition of superconducting coil, and the test results show that:

[0007] 1. The medium boxes in the strong magnetic field area are subjected to magnetic field forces facing the center of the magnetic field, and the chains between them are subjected to inward pressing forces, and in the adjacent area of the strong magnetic field area, the chains are mainly subjected to outward pulling forces.

[0008] 2. The driving force is almost only from a set of chain wheel teeth acting on a side bearing of a medium box.

[0009] Thus, two adverse consequences are produced:

[0010] (1) The chains of the medium boxes entering the strong magnetic field area experience a change from tension to pressure, and when leaving the strong magnetic field area, they experience a reverse change; the extrusion, collision and friction between metals occurring in the process can produce fine metal chips or metal particles, which form secondary pollution to the purified minerals.

[0011] (2) The excessively concentrated driving force is easy to cause bearing damage, resulting in a short equipment fault handling period.

[0012] In view of the above, it is necessary to further improve the ore feeding device for the superconducting magnetic separator, that is, to realize continuous ore feeding operation and reduce the collision between metals, thereby avoiding the production of metal chips or metal particles and affecting the final magnetic separation output. Content of the utility model

[0013] The utility model aims at providing a rotating ring type continuous ore feeding device and a superconducting magnetic separator, which improves the structure of the medium box ring, uses a single chain to connect two adjacent medium boxes together, connects the first and the last to form a medium box ring, erects the medium box ring on a ring track, and drives the medium box ring by a chain wheel, and a shock pad is additionally arranged between the medium boxes, so that the collision between metals is reduced, the production of metal chips or metal particles is reduced, and the influence on the magnetic separation is reduced.

[0014] To achieve the above utility model purposes, the first aspect of the utility model provides a rotating ring type continuous ore feeding device, which is provided with a plurality of medium boxes, two adjacent medium boxes are connected together by a chain, the first and the last of the medium boxes are connected to form a medium box ring, the medium box ring is erected on a ring track, a chain wheel is arranged, the chain wheel is in contact with one end of the medium box ring, and the chain wheel drives the medium box ring to move in a ring along the track.

[0015] As a further improvement of the utility model, the outer side of the medium box is a frame, and a magnetic medium pile is arranged in the frame.

[0016] Further, a roller, a driving shaft and a chain shaft are arranged outside the frame.

[0017] The roller is located in the middle of the frame.

[0018] The chain shaft is located at the two ends of the bottom of the frame.

[0019] The driving shaft is located in the middle of the bottom of the frame;

[0020] The inner side of the track is provided with a groove, and the rollers of the medium box are slidingly arranged in the groove;

[0021] The chain is provided with a chain piece, both ends of the chain piece are provided with connecting holes, and the connecting holes at both ends of the chain piece are connected with the chain shafts of the two adjacent medium boxes respectively.

[0022] As a further improvement of the utility model, a damping pad is arranged between the two adjacent medium boxes.

[0023] Further, the damping pad is a thick rubber block.

[0024] Further, the damping pad is pre-fixed on the medium box on one side; a plurality of damping pads are arranged between the two connected medium boxes.

[0025] As a further improvement of the utility model, the connecting holes at both ends of the chain piece are one circular connecting hole and the other is a long strip-shaped adjustable connecting hole.

[0026] Further, the two sides of the medium box are provided with chain shafts;

[0027] The two sides of the medium box are connected through the cooperation of the chain and the chain shaft.

[0028] As a further improvement of the utility model, the track is a ring track;

[0029] The track is provided with two branches located on the two sides of the medium box ring;

[0030] The two sides of the medium box are provided with rollers, and the rollers on the two sides are located in the tracks on the two sides respectively.

[0031] As a further improvement of the utility model, the sprocket comprises a sprocket disc, the middle of the sprocket disc is a driving shaft, and the driving shaft is connected with a driving motor;

[0032] The edges of the sprocket disc are provided with a plurality of driving grooves at equal intervals, and the driving grooves are matched with the driving shaft.

[0033] Further, the end of the driving shaft is provided with a bearing.

[0034] The second aspect of the utility model provides a superconducting magnetic separator, which comprises a superconducting magnet and a rotating ring type continuous feeding device as described above.

[0035] The upper part of the medium box ring of the rotating ring type continuous feeding device has a horizontally moving medium box string,

[0036] The medium box string of the medium box ring passes through the superconducting magnet.

[0037] The rotating ring type continuous ore feeding device is combined with a superconducting magnet to form a superconducting magnetic separator.

[0038] 1. The medium box body is used as a part of the annular structure, and the chain is only located between the medium boxes, so that the extrusion, collision and friction between the metals during rotation are effectively avoided.

[0039] 2. The chain connecting the medium boxes is specially designed, and one hole of the chain is designed as an adjustable connecting hole in a strip shape, so that when the adjacent two medium boxes are pulled apart, the spacing between the driving shafts is slightly larger than the driving groove spacing of the sprocket, so as to avoid the driving shaft on the side of the medium box on the sprocket from being subjected to additional pressure.

[0040] The size of the adjustable connecting hole should also allow the adjacent two medium boxes to be close together, so as to avoid the chain in the strong magnetic field area being stressed, and further eliminate the source of the force causing metal dust or metal particles.

[0041] Changing one hole of the chain into an adjustable connecting hole also brings another benefit, that is, the driving force provided by the sprocket is changed from one set of teeth to two sets of teeth. Specifically, above, the sprocket provides a pulling driving force to the driving shaft of the medium box just entering the sprocket, and below, the sprocket provides a pushing driving force to the driving shaft of the medium box just leaving the sprocket; the range of the pulling driving force includes all the medium boxes on the upper track straight section and the sprocket opposite side semicircular track; the range of the pushing driving force includes all the medium boxes on the lower track straight section; so as to solve the problem of too concentrated driving force.

[0042] 3. The metal surfaces of the medium boxes, chains and the like having relative motion with each other are chamfered, polished and hardened, so as to eliminate the material source causing metal dust or metal particles.

[0043] 4. A shock absorbing pad is arranged between the medium boxes, and the shock absorbing pad is a rubber pad with a certain thickness, so as to avoid the metal collision between the medium boxes just entering the strong magnetic field area and the front medium boxes, and further avoid the generation of metal dust or metal particles.

[0044] 5. The cross section of the track is a groove, the rollers of the medium boxes are limited in the groove, and the two grooved tracks opposite to each other limit the movement of the medium boxes in any direction in the vertical plane of the rotating ring movement direction in the strong magnetic field area, and the track straight section below avoids the chain from being subjected to additional tension due to the falling of the medium boxes.

[0045] Another benefit brought by the grooved track is that the metal dust or metal particles generated by the friction between the metals will not enter the collection groove below the medium boxes.

[0046] 6、The medium box is composed of a frame and a magnetic medium stack to facilitate replacement of the magnetic medium. The frame is provided with rollers matched with the track, a driving shaft matched with the driving groove of the chain wheel, and a chain shaft for connecting the chain.

[0047] The rotating ring type continuous ore feeding device and the superconducting magnetic separator of the utility model eliminate the collision between metals as much as possible, thereby reducing the generation of metal micro-chips or metal particles as much as possible and reducing the influence on magnetic separation. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is a whole structure schematic view of the rotating ring type continuous ore feeding device for the superconducting magnetic separator of the utility model.

[0049] Figure 2 It is an internal structure schematic view of the medium box of the utility model.

[0050] Figure 3 It is a side view of the medium box of the utility model.

[0051] Figure 4 It is a structure schematic view of a single chain of the utility model.

[0052] Figure 5 It is an assembly structure schematic view of two adjacent medium boxes.

[0053] Figure 6 It is an installation schematic view of the medium box on the track.

[0054] In the drawings:

[0055] 1-medium box, 11-frame, 12-magnetic medium stack, 13-roller, 14-driving shaft, 15-chain shaft;

[0056] 2-chain, 21-circular connecting hole, 22-adjustable connecting hole; 3-shock pad;

[0057] 4-sprocket, 41-sprocket disc, 41-driving shaft, 43-driving groove; 5-track. DETAILED DESCRIPTION

[0058] The specific implementation of the utility model will be further described in detail in combination with the drawings.

[0059] The superconducting magnetic separator of the utility model, on the basis of the rotating ring type continuous ore feeding superconducting magnetic separator of Chinese patent publication No.

[0060] The rotating ring type continuous ore feeding device of the utility model, as a whole, is shown in Figure 1 The medium box ring is formed by connecting a plurality of medium boxes 1 by chains 2, is erected on the annular track 5, and is driven by the sprocket 4 to make the medium box ring move in a ring shape.

[0061] The structure of the single medium box 1 is shown in Figure 2 、 Figure 3 The outer side is the frame 11, and the inside is provided with the magnetic medium pile 12; outside the frame 11, the roller 13, the driving shaft 14 and the chain shaft 15 are arranged; the roller 13 is located in the middle of the frame 11, and the driving shaft 14 is located at the bottom of the frame 11; the chain shaft 15 is located at both ends of the bottom of the frame 11, and the corresponding driving shaft 14 is preferably located in the middle of the bottom of the frame 11.

[0062] The single chain 2 is shown in Figure 4 The flat chain sheet 21 is provided with connecting holes at both ends, one end is a circular connecting hole 22, and the other end is a long strip-shaped adjustable connecting hole 23.

[0063] The adjacent two medium boxes 1 are connected by the single chain 2, that is, as shown in Figure 5 The circular connecting hole 22 at one end of the single chain 2 is connected with the chain shaft 15 of the medium box 1 on one side, and the adjustable connecting hole 23 at the other end is connected with the chain shaft 15 of the medium box 1 on the other side. Further preferably, a shock pad 3 is arranged between the adjacent two medium boxes 1, and the shock pad is generally made of rubber material; the shock pad 3 can be pre-fixed on the medium box 1 on one side, and a plurality of shock pads 3 can be arranged at multiple positions between the two medium boxes 1.

[0064] The track 5 is an annular track, as shown in Figure 6 The track 5 cooperates with the roller 13 of the medium box 1 to limit the movement direction of the medium box 1.

[0065] The sprocket 4 is shown in Figure 1As shown, including the sprocket 41, the middle is the drive shaft 41, connected with the drive motor, drive sprocket 41 rotation; The edge of the sprocket 41 is provided with a plurality of drive slots 43 at equal intervals, and the drive slots 43 are matched with the drive shaft 14; Preferably, the end of the drive shaft 14 is provided with a bearing, so as to reduce the friction between the drive slots 43.

[0066] The rotating ring type continuous ore feeding device, the chain wheel 4 rotates, drives the medium box ring to move in a ring shape under the limiting of the track 5, can continuously enter and exit the superconducting magnet, and realizes continuous magnetic separation operation.

[0067] The track 5 is preferably provided with two, located at the two sides of the medium box ring, and the medium box 1 is limited in the middle; and the two sides of the medium box 1 are connected through the chain 2 at the same time, so as to avoid the medium box ring from being scattered.

[0068] The rotating ring type continuous ore feeding device, compared with the existing rotating ring medium box, uses the medium box 1 body as a part of the annular structure, and the chain 2 is only located between the medium boxes, so that the extrusion, collision and friction phenomenon between the metals in the rotating process is effectively avoided; and the shock pad 3 is arranged between the medium boxes 1, the shock pad 3 is a rubber pad with a certain thickness, so as to avoid the medium box 1 just entering the strong magnetic field region from colliding between the metals, and further avoid generating metal dust or metal particles; further, the metal surfaces with relative motion between each other are chamfered, polished and hardened, so as to eliminate the material source of generating metal dust or metal particles.

[0069] One hole of the chain 2 is designed as an adjustable connecting hole 23 in a strip shape, so that when the adjacent two medium boxes 1 are pulled apart, the spacing between the drive shafts 14 is slightly larger than the spacing of the drive slots 43 of the chain wheel 4, so as to avoid the drive shaft 14 on the side of the medium box 1 on the chain wheel 4 from being subjected to additional pressure. The size of the adjustable connecting hole 23 should also allow the adjacent two medium boxes 1 to be close together, so as to avoid the chain 2 in the strong magnetic field region from being stressed, and further eliminate the force source of generating metal dust or metal particles.

[0070] Changing one hole of the chain 2 into the adjustable connecting hole 23 also brings another benefit, that is, the driving force provided by the chain wheel 4 is changed from one set of teeth to two sets of teeth. Specifically, above, the chain wheel 4 provides a pulling driving force to the drive shaft 14 of the medium box 1 just entering the chain wheel 4, and below, the chain wheel 4 provides a pushing driving force to the drive shaft 14 of the medium box 1 just about to leave the chain wheel 4; The range of the pulling driving force includes all the medium boxes 1 on the upper track straight line segment and the semicircular track on the opposite side of the chain wheel; The range of the pushing driving force includes all the medium boxes 1 on the lower track straight line segment; so as to solve the problem of too concentrated driving force.

[0071] The track 5 is preferably a groove, the rollers 13 of the media cassettes 1 are limited in the groove, two mutually opposed groove tracks 5 limit the movement of the media cassettes 1 in any direction in the vertical plane of the direction of rotation in the area of the strong magnetic field, the straight track section below prevents the chain from being subjected to additional tension due to the media cassettes 1 falling down. Another advantage of the groove-shaped track 5 is that metal dust or metal particles produced by the friction between the metals cannot enter the collection tank below the media cassettes.

[0072] The media cassette 1 consists of a frame 11 and a stack of magnetically permeable media 12 to facilitate the replacement of the magnetically permeable media. The frame 11 is provided with rollers 13 that cooperate with the track 5, a drive shaft 14 that cooperates with the drive groove 43 of the sprocket 4, and a chain shaft 15 for connecting the chain 2.

[0073] The media cassette ring consisting of the media cassettes 1 and the chain 2 is subjected to a pushing force when driven, so that the media cassettes 1 are pressed against each other by the damping pads 3, the media cassette 1 behind pushes the media cassette 1 in front to move, the damping pads 3 cushion the impact force during movement; the adjustable connection holes 23 ensure that during the straight movement of the media cassettes 1, especially in the area of the strong magnetic field, the chain shaft 15 located in the adjustable connection hole 23 is located in the middle of the adjustable connection hole 23, the contact area between the chain shaft 15 and the inner wall of the adjustable connection hole 23 is small, so that no collision occurs.

[0074] When the media cassette 1 ring moves to the sprocket 4, the distance between the media cassettes 1 is pulled apart by the drive groove 43, that is, the media cassettes 1 are separated from each other when they are on the semicircular track 5 at the sprocket 4, at this time the distal end of the adjustable connection hole 23 of the chain 2 acts, the chain shaft 15 is located in the distal end of the adjustable connection hole 23, in the direction of movement, the media cassette 1 in front is pulled by the chain 2 to pull the media cassette 1 behind.

[0075] The above has described the preferred embodiments of the present application, but the present application is not limited to the embodiments described above, those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application, these equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A rotary continuous feeder, characterized in that The adjacent two medium boxes are connected by a chain, the medium boxes are connected head to tail to form a medium box ring, and the medium box ring is arranged on a ring-shaped track.

2. The ring-type continuous feeder as claimed in claim 1, wherein The outer side of the medium box is a frame, and a magnetic medium stack is arranged in the frame.

3. The ring and puck continuous feeder of claim 2, wherein, A roller, a drive shaft, and a chain shaft are arranged outside the frame. The roller is located in the middle of the frame. The chain shaft is located at both ends of the bottom of the frame. The drive shaft is located in the middle of the bottom of the frame. The inner side of the track is provided with a groove, and the roller of the medium box is slidingly arranged in the groove. The chain is provided with a chain piece, and the chain piece is provided with a connecting hole at both ends.

4. The ring-type continuous ore feeder as claimed in any one of claims 1 to 3, wherein The connecting holes at both ends of the chain piece are connected with the chain shafts of the adjacent two medium boxes.

5. The ring and puck continuous feeder of claim 4, wherein, A damping pad is arranged between the adjacent two medium boxes.

6. The ring and puck continuous feeder of claim 3, wherein, The damping pad is pre-fixed on one side of the medium box.

7. The ring and puck continuous feeder of claim 6, wherein, A plurality of damping pads are arranged between the two connected medium boxes. The connecting holes at both ends of the chain piece are a circular connecting hole and a long strip-shaped adjustable connecting hole.

8. The ring and puck continuous feeder of claim 3, wherein, The two sides of the medium box are provided with chain shafts. The two sides of the medium box are connected by the cooperation of the chain and the chain shaft. The track is a ring-shaped track.

9. The ring and puck continuous feeder of claim 3, wherein, The track is provided with two branches located on both sides of the medium box ring. The two sides of the medium box are provided with rollers, and the rollers on the two sides are located in the tracks on the two sides.

10. A superconducting magnetic separator, characterized by, The chain wheel comprises a chain wheel disc, and a drive shaft is arranged in the middle of the chain wheel disc. A plurality of drive grooves are arranged at equal intervals on the edge of the chain wheel disc. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor. The chain wheel is connected with a drive motor

Images