Counterweight driving device for lifting tabletop of doffing roving frame

Abstract

The utility model relates to a doffing roving machine lifting table top counterweight driving device which comprises a rack and a sliding seat vertically connected to the rack in a sliding mode, one end of the sliding seat is fixedly connected with a lifting table, a plurality of connecting seats are arranged at the other end of the sliding seat in a protruding mode at intervals in the length direction of the sliding seat, and the connecting seats all extend to the back side of the rack and are fixedly connected with vertically-extending racks. The rack is meshed with a gear, the gear is driven by a driving shaft in a penetrating mode, the top of the rack is fixedly connected with a first chain, the top of the first chain is arranged on a first transmission wheel in a winding mode, the first transmission wheel penetrates through a linkage shaft, a second transmission wheel is further coaxially arranged on the linkage shaft, and a second chain is arranged in the second transmission wheel in a winding mode. A balancing weight is hung at the other end of the second chain through a hook; the lifting tabletop counterweight driving device of the doffing roving frame has the advantages that the structure is simple, the linkage matching is stable, and the cost is lower.

Description

Technical Field

[0001] This utility model relates to a counterweight drive device for the lifting platform of a doffing roving frame. Background Technology

[0002] The cotton roving frame is a crucial piece of equipment used extensively in the cotton spinning production process. Equipping the roving frame with a collective doffing device is an important step for cotton spinning enterprises to improve labor productivity and represents the current development trend in textile production.

[0003] In cotton spinning roving frames, the lower rib's lifting and lowering transmission is responsible for driving the bobbin and ensuring that the winding angular velocity decreases as the bobbin diameter increases, thus generating a winding speed to meet the winding forming conditions. Its main function is to ensure the up-and-down movement of the lower rib. The lifting stroke is changed by controlling the motor and PLC. The direction of the lower rib is changed by changing the direction of the lifting motor to change the direction of the lifting transmission shaft.

[0004] During the spinning process on a roving frame, when the lower roving moves vertically up and down, the lower roving itself has a large mass. Combined with the weight of the numerous spindles and bobbins, without balancing measures, the lifting shaft would bear a significant torque when the lower roving rises. Since the lifting shaft is powered by a lifting motor, the large torque on the shaft increases the motor's load, potentially causing overload and damaging the winding process. Therefore, the lifting transmission device on a roving frame also needs to be equipped with a lifting balancing device. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a counterweight drive device for the lifting platform of the doffing roving frame, which is not only reasonable in structure, but also safe and stable.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a counterweight drive device for the lifting platform of a doffing roving frame, including a frame and a sliding seat vertically slidably connected to the frame. One end of the sliding seat is fixedly connected to the lifting platform, and the other end has several connecting seats protruding at intervals along its length. Each connecting seat extends to the back side of the frame and is fixedly connected to a vertically extending rack. A gear meshes on the rack, and the gear is driven through a drive shaft. A first chain is fixedly connected to the top of the rack, and the top of the first chain is wound around a first transmission wheel. The first transmission wheel passes through a linkage shaft, and a second transmission wheel is coaxially arranged on the linkage shaft. A second chain is wound inside the second transmission wheel, and a counterweight is hung on the other end of the second chain via a hook. The winding directions of the first chain and the second chain are opposite.

[0007] Furthermore, both the first and second transmission wheels have annular grooves recessed inward along their circumferences for the first and second sprockets to wind around.

[0008] Furthermore, the diameter of the second drive wheel is larger than that of the first drive wheel so that the second chain, which passes around the second sprocket and hangs down, is away from the rack side, thus avoiding interference.

[0009] Furthermore, the frame is provided with several clearance windows for the connecting seat to pass through and slide vertically.

[0010] Furthermore, the frame includes partitions on both the front and back sides, and several fixed plates are fixedly connected to the partitions at intervals along their length. The drive shaft and the linkage shaft both pass through the fixed plates and are rotatably connected to the fixed plates via bearing seats.

[0011] Furthermore, the upper end of the counterweight is recessed into a storage groove, and a storage block is rotatably connected in the storage groove. The end of the storage block is recessed into a hooking groove, and a hanging rod is mounted in the hooking groove to facilitate hooking.

[0012] Furthermore, the rack is spaced apart along the length of the sliding seat, and a number of corresponding gears and first transmission wheels are also coaxially arranged. Every two sets of racks, gears, and first transmission wheels, together with the second transmission wheel, form a driving unit. The two racks are located on both sides of the counterweight, and the second transmission wheel is located directly above the counterweight.

[0013] Furthermore, a support frame is provided below the counterweight within the frame to support it when it reaches the lower position.

[0014] Compared with the prior art, the present invention has the following advantages: by linking the first transmission wheel and the second transmission wheel with the linkage shaft, and with the first chain and the second chain winding in opposite directions, as well as the setting of the connecting counterweight, the overall stability of operation can be effectively improved and the risk of deformation and damage due to excessive torque of the drive shaft can be avoided. The whole is safer and more stable, and the cost is saved.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of direction A in the middle;

[0018] Figure 3 for Figure 2 Enlarged diagram of B in the diagram.

[0019] In the diagram: 1-Frame, 2-Sliding seat, 3-Lifting platform, 4-Connecting seat, 5-Rack, 6-Gear, 7-Drive shaft, 8-Motor, 9-First chain, 10-First transmission wheel, 11-Linkage shaft, 12-Second transmission wheel, 13-Second chain, 14-Counterweight, 15-Groove, 16-Leaving window, 17-Partition, 18-Fixed plate, 19-Bearing seat, 20-Storage slot, 21-Storage block, 22-Hanging slot, 23-Hanging rod, 24-Support frame. Detailed Implementation

[0020] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0021] like Figures 1-3 As shown, the counterweight drive device for the lifting platform of the doffing roving frame includes a frame 1 and a sliding seat 2 vertically slidably connected to the frame. One end of the sliding seat is fixedly connected to the lifting platform 3, and the other end has several connecting seats 4 protruding at intervals along its length. Each connecting seat extends to the back side of the frame and is fixedly connected to a vertically extending rack 5. A gear 6 meshes on the rack, and the gear is driven through a drive shaft 7. The end of the drive shaft is driven by a motor 8. A first chain 9 is fixedly connected to the top of the rack. The top of the first chain is wound around a first transmission wheel 10. The first transmission wheel passes through a linkage shaft 11, and a second transmission wheel 12 is coaxially arranged on the linkage shaft. The second transmission wheel rotates with the rotation of the linkage shaft. A second chain 13 is wound inside the second transmission wheel, and a counterweight 14 is hung on the other end of the second chain via a hook. The winding directions of the first chain and the second chain are opposite.

[0022] In this embodiment of the utility model, both the first transmission wheel and the second transmission wheel are provided with annular grooves 15 along their periphery for the first sprocket and the second sprocket to be wound around.

[0023] In this embodiment of the invention, the diameter of the second transmission wheel is larger than that of the first transmission wheel so that the second chain, which passes around the second sprocket and hangs down, is away from the rack side, thus avoiding interference.

[0024] In this embodiment of the utility model, the frame is provided with a plurality of clearance windows 16 for the connecting seat to pass through and slide vertically.

[0025] In this embodiment of the utility model, the frame includes partitions 17 spaced apart on both the front and back sides, and a plurality of fixed plates 18 are fixedly connected at intervals along the length of the partitions. The drive shaft and the linkage shaft both pass through the fixed plates and are rotatably connected to the fixed plates via bearing seats 19.

[0026] In this embodiment of the utility model, the upper end of the counterweight block is recessed with a storage groove 20, and a storage block 21 is rotatably connected in the storage groove. The end of the storage block is recessed with a hooking groove 22, and a hanging rod 23 is mounted in the hooking groove to facilitate hooking. When in use, the storage block rotates out and is in a vertical state. A counterweight plate with a groove can be stacked on the counterweight block to increase the counterweight, while the storage block can be limited to prevent it from falling off.

[0027] In this embodiment of the utility model, the rack is provided at intervals along the length of the sliding seat, and the corresponding gears and first transmission wheels are also provided coaxially. Every two sets of racks, gears, and first transmission wheels cooperate with the second transmission wheel to form a driving unit. The two racks are located on both sides of the counterweight, and the second transmission wheel is located directly above the counterweight.

[0028] In this embodiment of the utility model, a support frame 24 is provided below the counterweight within the frame to support it in reaching the lower position.

[0029] The working principle of this utility model embodiment is as follows: When the lifting platform needs to be raised, the drive shaft rotates, the gear drives the rack to move downwards, and during the downward movement, the first chain drives the first transmission wheel to rotate and then rotates away from the first transmission wheel, thereby driving the linkage shaft to rotate. The linkage shaft drives the second transmission wheel to rotate, so that the second chain is wound around the second transmission wheel and drives the counterweight to move upwards. During the upward movement of the counterweight, it plays a role in balancing the whole, making the overall movement more stable. When the lifting platform needs to be lowered, the same principle applies in reverse. At this time, when the counterweight moves downwards slowly, it can effectively reduce the torque on the drive shaft, effectively increase the service life of the drive shaft and motor, and save operating costs.

[0030] This utility model is not limited to the preferred embodiment described above. Anyone can derive other various forms of doffing roving frame lifting platform counterweight drive devices based on the teachings of this utility model. All equivalent variations and modifications made within the scope of the claims of this utility model should be considered within the scope of this utility model.

Claims

1. A counterweight drive device for the lifting platform of a doffing roving frame, characterized in that: The device includes a frame and a sliding seat vertically slidably connected to the frame. One end of the sliding seat is fixedly connected to a lifting platform, and the other end has several connecting seats protruding at intervals along its length. Each connecting seat extends to the back side of the frame and is fixedly connected to a vertically extending rack. A gear meshes on the rack, and the gear is driven through a drive shaft. A first chain is fixedly connected to the top of the rack, and the top of the first chain is wound around a first transmission wheel. The first transmission wheel passes through a linkage shaft, and a second transmission wheel is coaxially arranged on the linkage shaft. A second chain is wound inside the second transmission wheel, and a counterweight is hung on the other end of the second chain via a hook. The winding directions of the first chain and the second chain are opposite.

2. The counterweight drive device for the doffing roving frame lifting platform according to claim 1, characterized in that: Both the first and second transmission wheels have annular grooves recessed inward along their circumferences for the first and second sprockets to be wound around.

3. The counterweight drive device for the doffing roving frame lifting platform according to claim 1, characterized in that: The diameter of the second transmission wheel is larger than that of the first transmission wheel.

4. The counterweight drive device for the doffing roving frame lifting platform according to claim 1, characterized in that: The frame is provided with several clearance windows for the connecting seat to pass through and slide vertically.

5. The counterweight drive device for the doffing roving frame lifting platform according to claim 1, characterized in that: The frame includes partitions on both the front and back sides, and several fixed plates are fixedly connected to the partitions at intervals along their length. The drive shaft and the linkage shaft both pass through the fixed plates and are rotatably connected to the fixed plates via bearing seats.

6. The counterweight drive device for the doffing roving frame lifting platform according to claim 1, characterized in that: The counterweight has a downward-facing recessed storage groove at its upper end, and a storage block is rotatably connected inside the storage groove. The end of the storage block has an inward-facing recessed hanging groove, and a hanging rod is mounted inside the hanging groove to facilitate hooking.

7. The counterweight drive device for the doffing roving frame lifting platform according to claim 1, characterized in that: The racks are spaced apart along the length of the sliding seat, and the corresponding gears and first transmission wheels are also coaxially arranged. Every two sets of racks, gears, and first transmission wheels, together with the second transmission wheel, form a driving unit. The two racks are located on both sides of the counterweight, and the second transmission wheel is located directly above the counterweight.

8. The counterweight drive device for the doffing roving frame lifting platform according to claim 1, characterized in that: The frame is equipped with support frames below the counterweights to support them when they reach the lower position.

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