Synchronous lifting transmission mechanism of picking unit in bale plucker

Abstract

A synchronous lifting transmission mechanism of a pick-up unit in a bale plucker comprises the pick-up unit, two chick-ball lead screw nut transmission assemblies are arranged on the pick-up unit at intervals, and lead screws in the lead screw nut transmission assemblies are vertically distributed and screwed in corresponding nuts. The distribution center of all the lead screw nut transmission assemblies coincides with the gravity center of the picking unit, and all the lead screw nut transmission assemblies rotate at the same speed and in the same direction through a synchronous transmission system by means of a lifting driving motor. It can be guaranteed that the picking units of the bale plucker are in horizontal equal-height lifting operation all the time, and uniformity and stability of a bale plucking layer of the bale plucker are guaranteed. The picking unit cannot fall accidentally even if the bale plucker breaks down, the vicious event that the bale plucker is damaged due to wrecking is eradicated, and the safety of the bale plucker and the stability and reliability of bale plucking are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cotton grabbing machine in textile machinery equipment, especially the lifting transmission mechanism of cotton grabbing machine grabbing arm part. BACKGROUND

[0002] In the textile machinery cotton grabbing machine, the grabbing arm part is the core component, and in the equipment operation process, the grabbing arm part is required to be pressed on the upper surface of the bale horizontally and stably, gradually descending, ensuring that the thickness of the cotton layer grabbed each time is uniform, and providing uniform fiber raw material for the subsequent equipment.

[0003] In patent No. 201980029603.5, a bale opener is disclosed by Germany Truzl Limited Partnership and Joint Stock Company, which is used for opening the compressed and placed fiber bale along the placement direction, the bale opener has a rack and a pickup unit, wherein the pickup unit is variably arranged in height at the rack, and wherein the rack can travel along the placement direction, so that the pickup unit can drive through the fiber bale, and wherein the pickup unit is suspended on the rack by means of at least one traction device, wherein the traction device is effectively connected with a driving motor to adjust the height of the pickup unit at the rack. According to the utility model, at least one traction device is guided around a reversing wheel arranged on the upper side of the rack, wherein the first end of the traction device is connected with the pickup unit, and wherein the second end of the traction device can be wound and unwound on the traction device roller arranged at the pickup unit, wherein the driving motor is arranged at the pickup unit and is effectively connected with the traction device roller.

[0004] In the bale opener described in the patent, the lifting principle of the pickup unit is as shown in Figure 1 A horizontal transmission shaft 3 is arranged on the pickup unit 1, and two winding wheels 6 are respectively installed at both ends of the transmission shaft. Two traction belts 2 are suspended in front and back directions by the two winding wheels 6 respectively, one end of the traction belt 2 is fixed on the pickup unit 1, and the other end is fixed on the winding wheel 6, the driving motor is directly connected with the transmission shaft 3, and the driving motor directly drives the rotation of the transmission shaft 3, thereby driving the rotation of the winding wheel 6, so as to realize the winding or unwinding of the traction belts 2 on both sides, and further realize the lifting and lowering of the pickup unit 1.

[0005] The grabbing arm lifting structure disclosed in the above patent has the following shortcomings:

[0006] The two ends of the main shaft fixed on the picking unit 1 are lifted synchronously by two traction belts 2, and due to the gravity center of the picking unit 1 not being at the center of the transmission shaft 3, the two traction belts 2 are subjected to different forces in the actual working process, and due to the difference in mechanical friction caused by long-term operation, the two traction belts 2 will produce inconsistent expansion and contraction errors due to the force and temperature difference, so that the front and rear sides of the grabbing arm are not at the same height, thereby causing uneven cotton grabbing, and even increasing the running resistance due to side deviation.

[0007] The picking unit 1 is suspended by only two traction belts 2, and lacks the locking function of preventing falling, so once the traction belt 2 is broken, the picking unit 1 will immediately fall, causing the cotton grabbing machine to be damaged and stopped, and even causing a safety accident, which is very serious and has unpredictable consequences. The utility model discloses a synchronous lifting transmission mechanism of picking unit in cotton grabbing machine

[0008] The utility model discloses a synchronous lifting transmission mechanism of picking unit in cotton grabbing machine, which can ensure that the picking unit of the cotton grabbing machine is always in horizontal and equal height lifting operation, and ensure the uniformity and stability of the cotton grabbing layer of the cotton grabbing machine.

[0009] The utility model discloses the technical scheme as follows:

[0010] A synchronous lifting transmission mechanism of picking unit in cotton grabbing machine, including picking unit, screw nut transmission assembly, synchronous transmission system and lifting drive motor, at least two and above screw nut transmission assemblies are arranged on the picking unit, the screw rod in the screw nut transmission assembly is vertically distributed and is screwed in the corresponding nut, the center of distribution of all screw nut transmission assemblies coincides with the gravity center of the picking unit, and all screw nut transmission assemblies are rotated at the same speed and in the same direction by the synchronous transmission system of the lifting drive motor.

[0011] Further, at least one screw nut transmission assembly is arranged on the left and right sides of the picking unit.

[0012] Further, at least one screw nut transmission assembly is arranged on the left and right sides of the picking unit.

[0013] Further, one screw nut transmission assembly is arranged on the left side of the picking unit, and two screw nut transmission assemblies are arranged on the right side of the picking unit.

[0014] Further, two screw nut transmission assemblies are arranged on the left side of the picking unit, and two screw nut transmission assemblies are arranged on the right side of the picking unit.

[0015] Further, the synchronous transmission system comprises a driving engaging wheel, a driven engaging wheel, a tensioning engaging wheel and an engaging transmission belt, the driving engaging wheel is fixedly installed on the main shaft of the lifting driving motor, the driven engaging wheel is fixed on the screw rod, the engaging transmission belt passes through the driving engaging wheel and all the driven engaging wheels, and the engaging transmission belt is tensioned by the at least one tensioning engaging wheel.

[0016] Further, the synchronous transmission system comprises a driving engaging wheel, a driven engaging wheel, a tensioning engaging wheel and an engaging transmission belt, the driving engaging wheel is fixedly installed on the main shaft of the lifting driving motor, the driven engaging wheel is fixed on the screw rod, the engaging transmission belt passes through the driving engaging wheel and all the driven engaging wheels, and the engaging transmission belt is tensioned by the at least one tensioning engaging wheel.

[0017] Further, the driving engaging wheel, the driven engaging wheel and the tensioning engaging wheel are all sprockets with the same modulus, and the engaging transmission belt is a chain with the same modulus.

[0018] Further, the driving engaging wheel, the driven engaging wheel and the tensioning engaging wheel are all sprockets with the same modulus, and the engaging transmission belt is a chain with the same modulus.

[0019] Since the screw rod nut assemblies are arranged at two ends of the picking unit of the cotton grabbing machine, the nuts in the screw rod nut assemblies are fixed on the picking unit, the screw rods are rotatably fixed on the rack through bearings, the lifting driving motor drives the vertically arranged screw rods to rotate synchronously through the synchronous transmission system, so that the nuts are lifted synchronously, and the picking unit is lifted synchronously with the nuts; since all the screw rod nut assemblies are of the same specification and rotate at the same speed in the same direction, the picking unit is always in a horizontal state, so that the cotton grabbing machine can uniformly grab the cotton bales, and the thickness of the grabbed cotton layer is uniform. As known in the art, the screw rod nut mechanism has self-locking performance, so that the picking unit will not fall in any working condition, and the defects in the prior art are eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a lifting structure schematic view of the picking unit on the existing cotton grabbing machine;

[0021] Figure 2 It is a schematic view of the picking unit on the existing cotton grabbing machine in a non-equal height state;

[0022] Figure 3 It is a structural schematic view of the present application;

[0023] Figure 4 It is a structural schematic view of the present application; Figure 3 It is an enlarged view of the part I;

[0024] Figure 5 Another structural schematic view of the utility model.

[0025] In the figure: 1-pickup unit; 2-pulling belt; 3-transmission shaft; 4-grabbing frame; 5-pulley; 6-winding wheel; 7-screw nut transmission assembly; 8-synchronous transmission system; 9-lifting drive motor; 71-nut; 72-screw rod; 81-driving engagement wheel; 82-following engagement wheel; 83-tightening engagement wheel; 84-engagement transmission belt; 85-driving pulley; 86-driving shaft; 87-following pulley; 88-transmission belt. DETAILED DESCRIPTION

[0026] The specific embodiment of the utility model is illustrated below with reference to the drawings:

[0027] Example 1: a synchronous lifting transmission mechanism of a pickup unit of a grabbing frame, comprising a pickup unit 1, four screw nut transmission assemblies 7, a synchronous transmission system 8 and a lifting drive motor 9, two screw nut transmission assemblies 7 are arranged at the left and right sides of the pickup unit 1, the nut 71 in the screw nut transmission assembly 7 is fixed to the pickup unit 1, the screw rod 72 is vertically distributed and is screwed into the corresponding nut 71, the center of the four screw nut transmission assemblies 7 is coincident with the gravity center of the pickup unit 1, the four screw nut transmission assemblies 7 are rotated at the same speed and in the same direction by the synchronous transmission system 8 of the chain wheel and chain structure of the lifting drive motor 9, in this example, the synchronous transmission system 8 comprises a driving engagement wheel 81, a following engagement wheel 82, a tightening engagement wheel 83 and an engagement transmission belt 84, the driving engagement wheel 81 is fixedly installed on the main shaft of the lifting drive motor 9, the following engagement wheel 82 is fixed to the screw rod 72, the engagement transmission belt 84 is wound around the driving engagement wheel 81 and all the following engagement wheels 82, the engagement transmission belt 84 is tightened by at least one tightening engagement wheel 83, the driving engagement wheel 81, the following engagement wheel 82 and the tightening engagement wheel 83 are all chain wheels of the same modulus, and the engagement transmission belt 84 is a chain of the same modulus.

[0028] Of course, in this example, the synchronous transmission system 8 can also adopt a synchronous pulley and synchronous belt structure, at this time, the driving engagement wheel 81, the following engagement wheel 82 and the tightening engagement wheel 83 are all gears of the same modulus, and the engagement transmission belt 84 is a synchronous rack type transmission belt of the same modulus.

[0029] Example 2: as Figure 5The difference between the embodiment 1 is that the synchronous transmission system 8, in this case, the synchronous transmission system 8 comprises a driving engaging wheel 81, a driven engaging wheel 82, a tensioning engaging wheel 83 and an engaging transmission belt 84, the driving pulley 85 is fixedly installed on the main shaft of the lifting driving motor 9, the driving engaging wheel 81 is fixedly installed on the driving shaft 86, the driven pulley 87 is fixedly installed on the driving shaft 86, the driving pulley 85 and the driven pulley 87 are connected by the transmission belt 88, the driven engaging wheel 82 is fixed on the screw rod 72, the engaging transmission belt 84 is wound through the driving engaging wheel 81 and all the driven engaging wheels 82, and the engaging transmission belt 84 is tensioned by the plurality of tensioning engaging wheels 83.

[0030] Embodiment 3: The difference between the embodiment 1 is that the number of the screw nut transmission assemblies 7 is reduced and the distribution scheme is changed, in this case, one screw nut transmission assembly 7 is arranged on the left side of the picking unit 1 and one screw nut transmission assembly 7 is arranged on the right side of the picking unit 1.

[0031] Embodiment 4: One screw nut transmission assembly 7 is arranged on the left side of the picking unit 1 and two screw nut transmission assemblies 7 are arranged on the right side of the picking unit 1.

[0032] The embodiment of the utility model is many, the picking unit of the grabber is driven by two or more than two screw nut transmission assemblies 7 which are distributed in parallel and are spaced, all the technical schemes that the lifting driving motor 9 synchronously drives the horizontal lifting of the picking unit 1 through the synchronous transmission system 8 belong to the protection scope of the patent.

Claims

1. A synchronous lifting transmission mechanism for the picking unit in a cotton picker, characterized in that: The system includes a pickup unit (1), a lead screw and nut transmission assembly (7), a synchronous transmission system (8), and a lifting drive motor (9). At least two or more lead screw and nut transmission assemblies (7) are spaced apart on the pickup unit (1). The lead screws (72) in the lead screw and nut transmission assembly (7) are vertically distributed and screwed into the corresponding nuts (71). The center of distribution of all lead screw and nut transmission assemblies (7) coincides with the center of gravity of the pickup unit (1). All lead screw and nut transmission assemblies (7) are rotated at the same speed and in the same direction by the lifting drive motor (9) through the synchronous transmission system (8).

2. The synchronous lifting transmission mechanism of the picking unit in a cotton grabber according to claim 1, characterized in that: A screw and nut transmission assembly (7) is provided on each of the left and right sides of the pickup unit (1).

3. The synchronous lifting transmission mechanism of the picking unit in a cotton grabber according to claim 1, characterized in that: Two lead screw and nut transmission assemblies (7) are provided at intervals on the left and right sides of the pickup unit (1).

4. The synchronous lifting transmission mechanism of the picking unit in a cotton grabber according to claim 1, characterized in that: A lead screw and nut transmission assembly (7) is provided on the left side of the pickup unit (1), and two lead screw and nut transmission assemblies (7) are provided at intervals on the right side of the pickup unit (1).

5. The synchronous lifting transmission mechanism of the picking unit in a cotton grabber according to claim 1, characterized in that: The synchronous transmission system (8) includes an active meshing wheel (81), a driven meshing wheel (82), a tensioning meshing wheel (83), and a meshing transmission belt (84). The active meshing wheel (81) is fixedly mounted on the main shaft of the lifting drive motor (9), the driven meshing wheel (82) is fixed on the lead screw (72), and the meshing transmission belt (84) passes around the active meshing wheel (81) and all the driven meshing wheels (82). The meshing transmission belt (84) is tensioned by at least one tensioning meshing wheel (83).

6. The synchronous lifting transmission mechanism of the picking unit in a cotton grabber according to claim 1, characterized in that: The synchronous transmission system (8) includes an active meshing wheel (81), a driven meshing wheel (82), a tensioning meshing wheel (83), and a meshing transmission belt (84). An active pulley (85) is fixedly installed on the main shaft of the lifting drive motor (9). The active meshing wheel (81) is fixedly installed on the active shaft (86). A driven pulley (87) is fixedly installed on the active shaft (86). The active pulley (85) and the driven pulley (87) are connected by a transmission belt (88). The driven meshing wheel (82) is fixed on the lead screw (72). The meshing transmission belt (84) passes around the active meshing wheel (81) and all the driven meshing wheels (82). The meshing transmission belt (84) is tensioned by at least one tensioning meshing wheel (83).

7. The synchronous lifting transmission mechanism of the picking unit in a cotton grabber according to claim 5 or 6, characterized in that: The active meshing wheel (81), driven meshing wheel (82), and tensioning meshing wheel (83) are all sprockets of the same module, and the meshing transmission belt (84) is a chain of the same module.

8. The synchronous lifting transmission mechanism of the picking unit in a cotton grabber according to claim 5 or 6, characterized in that: The active meshing wheel (81), driven meshing wheel (82), and tensioning meshing wheel (83) are all gears of the same module, and the meshing transmission belt (84) is a synchronous rack and pinion transmission belt of the same module.

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