A bridge paperboard pulling device

Abstract

The utility model relates to paperboard production device technical field, specifically disclose a kind of overbridge paperboard traction device, including overbridge, track mechanism, power mechanism, walking mechanism and paper clamping mechanism, can be installed in paperboard production line, when device starts, operator first in the initial station of paperboard production line left side, the end edge of the paperboard to be pulled is clamped in clipper;Subsequently, start driving device, the output shaft of driving device drives driving wheel to rotate;Again drive transmission bar to move in cycle, the connecting seat of transmission bar lower end connection synchronously clamps paperboard end and moves to right, until reach the triple preheater station of production line end, to carry out subsequent preheating process;The present application is also provided with tensioning mechanism, during the debugging stage after device installation or in long-term operation, transmission bar can be always in taut state by adjusting the tensioning wheel of tensioning mechanism along left side moves, transmission bar is avoided to slip or derail in working process.

Description

Technical Field

[0001] This utility model relates to the technical field of paperboard production equipment, and in particular to a paperboard traction device for overhead bridges. Background Technology

[0002] In cardboard production lines, the paper-threading process via overhead cable trays has long relied on manual operation. Although modern equipment significantly increases production speed, workers still need to climb the high cable trays to manually pull the cardboard during startup. This process presents significant safety hazards: the overhead cable trays are high off the ground, limiting operating space. Especially for seven-layer cardboard production lines with a width exceeding 2.5 meters, the manual pulling distance can approach 70 meters, requiring multiple workers to coordinate. This is not only inefficient but also prone to tearing due to uneven force, and is even more difficult to implement in factory spaces with insufficient ceiling height.

[0003] To replace manual labor, some manufacturers have attempted to develop automated paper feeding equipment. For example, Chinese Patent Publication No. CN114311997A proposes an automatic paper feeding device, but its transmission path requires traversing multiple rollers, resulting in a complex structure and high maintenance costs. More importantly, this solution lacks a chain tension control mechanism, which can easily lead to transmission failure due to chain loosening after long-term operation, or even cause machine shutdowns, making it difficult to meet the stability requirements of continuous production.

[0004] To address the aforementioned issues, there is an urgent need for a simplified and reliable overhead paperboard traction device. By optimizing the transmission layout and active tension control, the device reduces equipment complexity while ensuring traction stability, ultimately achieving automatic paper feeding. This eliminates the risks of working at heights and is adaptable to factory spaces of varying heights. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a cardboard traction device for overpasses to solve the above problems.

[0006] A cardboard traction device for pedestrian bridges, comprising:

[0007] Overpass;

[0008] The track mechanism includes multiple gantry frames arranged side by side in the left-right direction and fixed on the overpass frame, an upper track and a lower track fixed on the gantry frames, the upper track having an upper channel and the lower track having a lower channel;

[0009] The power mechanism includes a drive device mounted on one of the gantry frames, a drive wheel driven to rotate by the drive device, and a transmission bar cooperating with the drive wheel. The upper part of the transmission bar passes through the upper channel, and the lower part of the transmission bar passes through the lower channel.

[0010] The walking mechanism includes a connecting seat fixedly connected to the lower part of the transmission bar, and walking wheels mounted on the connecting seat and rolling along the lower channel;

[0011] The paper clamping mechanism includes a clamp fixedly installed at the lower end of the connecting seat;

[0012] The tensioning mechanism includes a tensioning wheel whose position can be adjusted along the length of the transmission bar. The transmission bar forms a closed structure around the drive wheel and the tensioning wheel. The tensioning wheel is mounted on a gantry opposite to the drive wheel. The transmission bar is kept taut by adjusting the position of the tensioning wheel.

[0013] Specifically, the lower track has a through hole extending vertically along its lower end face, and the connecting seat of the traveling mechanism extends downward through the through hole.

[0014] Specifically, the driving device is a right-angle geared motor.

[0015] Specifically, the drive wheel is a first gear, the tension wheel is a second gear, and the transmission bar is a chain, which meshes with both the first gear and the second gear simultaneously.

[0016] Specifically, the drive wheel is a first friction wheel, the tension wheel is a second friction wheel, the transmission bar is a belt, and the belt is in frictional contact with both the first and second friction wheels.

[0017] Specifically, the tensioning mechanism further includes:

[0018] A fixing box is fixed to the gantry frame on which the tensioning wheel is installed;

[0019] An adjustment seat is disposed within the fixed box and can move along the length of the transmission bar;

[0020] An adjusting rod has one end passing through the side wall of the fixed box and connected to the adjusting seat, and the other end extending to the outside of the fixed box and equipped with an adjusting nut; the adjusting rod drives the adjusting seat to move by axial rotation.

[0021] The bearing has its inner ring fixed on the adjusting seat, and the central shaft of the tensioning wheel is supported on the outer ring of the bearing.

[0022] Specifically, the two ends of the central shaft of the tensioning wheel pass through the waist-shaped holes opened on the front and rear side walls of the fixed box. The length direction of the waist-shaped holes is parallel to the length direction of the transmission bar to restrict the central shaft and the tensioning wheel to slide only in the left and right direction.

[0023] Specifically, the clamp includes a pair of detachable and cooperating clamps, and the clamping surfaces of the clamps are provided with anti-slip textures.

[0024] The beneficial effects of this utility model are:

[0025] 1. The overhead board traction device of this application can be installed in a board production line. The overhead board traction device includes an overhead frame, a track mechanism, a power mechanism, a traveling mechanism, and a paper clamping mechanism. When the device is started, the operator first clamps the end edge of the board to be pulled at the initial station on the left side of the board production line; then the drive device of the power mechanism is started, and the output shaft of the drive device drives the drive wheel to rotate; then the transmission bar is driven to move in a cycle, and the connecting seat connected to the lower end of the transmission bar synchronously clamps the end of the board and moves to the right until it reaches the triple preheater station at the end of the production line for subsequent preheating process;

[0026] 2. This application also includes a tensioning mechanism. During the commissioning phase after installation or during long-term operation, the transmission bar may become loose. In this case, the tensioning wheel of the tensioning mechanism can be adjusted to move to the left to force the transmission bar to remain taut, thus preventing the transmission bar from slipping or derailing during operation. Attached Figure Description

[0027] Figure 1 This is a front view of a paperboard production line equipped with the overhead paperboard traction device of this embodiment;

[0028] Figure 2 A perspective view of a cardboard production line equipped with the overhead cardboard traction device of this embodiment;

[0029] Figure 3 for Figure 2 A magnified view of position A in the middle;

[0030] Figure 4 This is a schematic diagram of the track mechanism, walking mechanism, paper clamping mechanism and tensioning mechanism in this embodiment;

[0031] Figure 5 for Figure 2 A magnified view of position B in the middle;

[0032] Figure 6 This is a schematic diagram of the track mechanism and power mechanism in this embodiment.

[0033] The attached figures are labeled as follows: bridge frame 10, track mechanism 20, gantry frame 21, upper track 22, lower track 23, power mechanism 30, drive device 31, drive wheel 32, transmission bar 33, walking mechanism 40, connecting seat 41, walking wheel 42, paper clamping mechanism 50, clamp 51, clamp head 52, tensioning mechanism 60, tensioning wheel 61, fixing box 62, oblong hole 621, adjusting seat 63, adjusting rod 64, adjusting nut 65, bearing 66. Detailed Implementation

[0034] This utility model provides a cardboard traction device for pedestrian bridges. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0036] Please refer to Figures 1 to 6 This embodiment discloses a cardboard traction device for pedestrian bridges, which can be installed in, for example... Figure 1-2 In the paperboard production line shown, the overhead paperboard traction device includes an overhead bridge frame 10, a track mechanism 20, a power mechanism 30, a traveling mechanism 40, a paper clamping mechanism 50, and a tensioning mechanism 60.

[0037] The track mechanism 20 includes multiple gantry frames 21 arranged side by side in the left-right direction and fixed on the bridge frame 10, an upper track 22 and a lower track 23 fixed on the gantry frames 21, the upper track 22 having an upper channel and the lower track 23 having a lower channel; the power mechanism 30 includes a drive device 31 installed on one of the gantry frames 21, a drive wheel 32 driven to rotate by the drive device 31, and a transmission bar 33 cooperating with the drive wheel 32, the upper part of the transmission bar 33 passing through the upper channel and the lower part of the transmission bar 33 passing through the lower channel; the traveling mechanism 40 includes a connecting seat 41 fixedly connected to the lower part of the transmission bar 33, and a traveling wheel 42 installed on the connecting seat 41 and rolling along the lower channel; the paper clamping mechanism 50 includes a clamp 51 fixedly installed at the lower end of the connecting seat 41.

[0038] When the device is started, the operator first clamps the clip 51 to the end edge of the cardboard to be pulled at the initial station on the left side of the cardboard production line. Then, the drive unit 31 of the power mechanism 30 is started, and the output shaft of the drive unit 31 drives the drive wheel 32 to rotate. The drive wheel 32 and the transmission bar 33 form a meshing or friction transmission (a gear chain or friction wheel belt structure can be selected according to the embodiment), and the rotational force of the drive wheel 32 is converted into the closed-loop cyclic motion of the transmission bar 33.

[0039] The upper part of the drive bar 33 is embedded in the upper channel of the upper rail 22, while the lower part passes through the lower channel of the lower rail 23, forming a stable double-rail constraint structure. The lower part of the drive bar 33 is fixed to the connecting seat 41. When the drive bar 33 moves cyclically, the connecting seat 41 synchronously drives the traveling wheel 42 to roll along the lower channel of the lower rail 23, achieving precise linear guidance. During this process, the clamp 51 continuously pulls the cardboard from the left station to the right along with the displacement of the connecting seat 41 until it reaches the triple preheater station at the end of the production line. At this time, the operator releases the clamp 51 from the locking state of the cardboard, completing the automatic traction of the cardboard end.

[0040] The tensioning mechanism 60 includes a tensioning wheel 61 whose position is adjustable along the length of the transmission bar 33. The transmission bar 33 forms a closed structure around the drive wheel 32 and the tensioning wheel 61. The tensioning wheel 61 is mounted on the gantry 21 opposite to the drive wheel 32. Adjusting the position of the tensioning wheel 61 keeps the transmission bar 33 taut. During the commissioning phase after installation or during long-term operation, the transmission bar 33 may slack. In this case, the tensioning wheel 61 of the tensioning mechanism 60 can be adjusted to move to the left, forcing the transmission bar 33 to remain taut at all times. The tensioning wheel 61 and the drive wheel 32 are located at opposite ends of the track mechanism 20, forming a symmetrical tension layout to prevent the transmission bar 33 from slipping or derailing during operation.

[0041] Furthermore, the lower track 23 has a through hole extending vertically along its lower end face, through which the connecting seat 41 of the traveling mechanism 40 extends downward. By providing the through hole, interference can be avoided when the connecting seat 41 moves in the left and right directions, and the through hole can also restrict the connecting seat 41 to move only in the left and right directions, preventing wobbling.

[0042] Please refer to Figures 5 to 6 The drive unit 31 is a right-angle geared motor, with its input and output shafts perpendicularly arranged at 90°, thus reducing the overall installation space of the power mechanism 30. The drive wheel 32 can be directly nested into the output flange of the right-angle geared motor without the need for additional couplings or transmission gear sets.

[0043] Please refer to Figures 3 to 4 The tensioning mechanism 60 also includes a fixed box 62, an adjusting seat 63, an adjusting rod 64, an adjusting nut 65, and a bearing 66. The fixed box 62 is fixed on the gantry frame 21 on which the tensioning wheel 61 is installed. The adjusting seat 63 is located inside the fixed box 62 and can move along the length of the transmission bar 33. One end of the adjusting rod 64 passes through the side wall of the fixed box 62 and is connected to the adjusting seat 63, and the other end extends to the outside of the fixed box 62 and is provided with an adjusting nut 65. The adjusting rod 64 drives the adjusting seat 63 to move by axial rotation. The inner ring of the bearing 66 is fixed on the adjusting seat 63, and the central shaft of the tensioning wheel 61 is supported on the outer ring of the bearing 66.

[0044] When the tension of the transmission bar 33 needs to be adjusted, the operator rotates the adjusting nut 65 of the tensioning mechanism 60 to drive the adjusting rod 64 to move axially. The rotational motion is converted into linear displacement of the adjusting seat 63 in the fixed box 62 through the threaded transmission. At this time, the inner ring of the bearing 66 fixed on the adjusting seat 63 moves synchronously, and the central axis of the tensioning wheel 61 supported on the outer ring of the bearing 66 moves along the length of the transmission bar 33. Under the guidance of the waist-shaped hole 621, the transmission bar 33 is stretched to the preset tension. The relative rotation mechanism of the inner and outer rings of the bearing 66 can reduce the frictional resistance when the tensioning wheel 61 rotates.

[0045] Please refer to Figure 4 The two ends of the central shaft of the tensioning wheel 61 pass through the waist-shaped holes 621 opened on the front and rear side walls of the fixed box 62. The length direction of the waist-shaped holes 621 is parallel to the length direction of the transmission bar 33 to restrict the central shaft and the tensioning wheel 61 to slide only in the left and right directions.

[0046] Please refer to Figures 3 to 4 The clip 51 includes a pair of detachable and cooperating clamps 52. The clamping surfaces of the clamps 52 are provided with anti-slip textures to increase the coefficient of friction of the clamping surfaces of the clamps 52 and prevent the clamps 52 from loosening when clamping the cardboard.

[0047] As a preferred embodiment, this example employs a gear and chain structure. Specifically, the drive wheel 32 is a first gear, the tension wheel 61 is a second gear, and the transmission bar 33 is a chain, which meshes with both the first and second gears simultaneously. After the drive device 31 of the power mechanism 30 is activated, the output shaft of the drive device 31 drives the first gear to rotate, and its tooth grooves mesh with the chain links of the chain 33. The advancement of each tooth is converted into a displacement of one chain pitch in the chain. Through this mechanical interlocking of the tooth grooves and chain links, the rotational kinetic energy of the first gear is transmitted to the chain. At the same time, the second gear located at the other end of the track mechanism 20, under the adjustment of the tensioning mechanism 60, always maintains a tightly meshed state with the chain, forming a symmetrical tension fulcrum.

[0048] Of course, in other embodiments, a friction wheel and belt structure can also be used. Specifically, the drive wheel 32 is a first friction wheel, the tension wheel 61 is a second friction wheel, and the transmission bar 33 is a belt. The belt makes frictional contact with both the first and second friction wheels. When the drive device 31 drives the first friction wheel to rotate, its wheel surface generates static friction with the belt, causing the belt to move smoothly along the lower channel of the lower track 23. At the same time, the second friction wheel continuously applies radial pressure to the belt under the control of the tensioning mechanism 60, so that the contact surfaces of the belt with the first and second friction wheels always maintain the maximum coefficient of friction, thereby transmitting power to the connecting seat 41 fixed to the lower part of the belt, and finally realizing the automatic traction of the cardboard through the clamp 51.

[0049] The preferred embodiments of this utility model have been described in detail above. However, this invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this invention.

Claims

1. A cardboard traction device for pedestrian bridges, characterized in that, include: Overpass (10); The track mechanism (20) includes multiple gantry frames (21) arranged side by side in the left and right direction and fixed on the overpass frame (10), an upper track (22) and a lower track (23) fixed on the gantry frames (21), the upper track (22) having an upper passage and the lower track (23) having a lower passage; The power mechanism (30) includes a drive device (31) mounted on one of the gantry frames (21), a drive wheel (32) driven to rotate by the drive device (31), and a transmission bar (33) cooperating with the drive wheel (32). The upper part of the transmission bar (33) passes through the upper channel, and the lower part of the transmission bar (33) passes through the lower channel. The walking mechanism (40) includes a connecting seat (41) fixedly connected to the lower part of the transmission bar (33) and a walking wheel (42) mounted on the connecting seat (41) and rolling along the lower channel; The paper clamping mechanism (50) includes a clamp (51) fixedly installed at the lower end of the connecting seat (41); The tensioning mechanism (60) includes a tensioning wheel (61) whose position can be adjusted along the length of the transmission bar (33). The transmission bar (33) forms a closed structure around the drive wheel (32) and the tensioning wheel (61). The tensioning wheel (61) is mounted on the gantry (21) opposite to the drive wheel (32). The transmission bar (33) is kept in a tensioned state by adjusting the position of the tensioning wheel (61).

2. The overpass cardboard traction device according to claim 1, characterized in that, The lower track (23) has a through hole extending vertically along its lower end face, and the connecting seat (41) of the walking mechanism (40) extends downward through the through hole.

3. The overpass cardboard traction device according to claim 1, characterized in that, The drive device (31) is a right-angle geared motor.

4. The paperboard traction device for pedestrian bridges according to claim 1, characterized in that, The drive wheel (32) is the first gear, the tension wheel (61) is the second gear, and the transmission bar (33) is a chain, which meshes with both the first gear and the second gear.

5. The paperboard traction device for pedestrian bridges according to claim 1, characterized in that, The drive wheel (32) is the first friction wheel, the tension wheel (61) is the second friction wheel, and the transmission bar (33) is a belt. The belt is in frictional contact with both the first and second friction wheels.

6. The paperboard traction device for pedestrian bridges according to claim 1, characterized in that, The tensioning mechanism (60) further includes: The fixing box (62) is fixed on the gantry (21) on which the tensioning wheel (61) is installed; An adjusting seat (63) is disposed within the fixed box (62) and is movable along the length of the transmission bar (33); An adjusting rod (64) has one end passing through the side wall of the fixed box (62) and connected to the adjusting seat (63), and the other end extending to the outside of the fixed box (62) and provided with an adjusting nut (65); the adjusting rod (64) drives the adjusting seat (63) to move by axial rotation; The inner ring of the bearing (66) is fixed on the adjusting seat (63), and the central shaft of the tensioning wheel (61) is supported on the outer ring of the bearing (66).

7. The overpass cardboard traction device according to claim 6, characterized in that, The two ends of the central shaft of the tensioning wheel (61) pass through the waist-shaped holes (621) opened on the front and rear side walls of the fixed box (62). The length direction of the waist-shaped holes (621) is parallel to the length direction of the transmission bar (33) to restrict the central shaft and the tensioning wheel (61) to slide only in the left and right direction.

8. The paperboard traction device for pedestrian bridges according to claim 1, characterized in that, The clamp (51) includes a pair of detachable and cooperating clamps (52), and the clamping surfaces of the clamps (52) are provided with anti-slip textures.

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