Equal-height fine adjustment mechanism for synchronous lifting transmission set of bale plucker grabbing arm component

Abstract

An equal-height fine adjustment mechanism for a synchronous lifting transmission set of a bale plucker grabbing arm component belongs to the field of textile machinery and comprises a picking unit and a lead screw nut transmission assembly, nuts in the lead screw nut transmission assembly are fixed on the left side and the right side of the picking unit, lead screws are screwed in the corresponding nuts, and the nuts can be finely adjusted in the height direction. According to the utility model, the height position of the nut fixed on the supporting pickup unit can be accurately and finely adjusted, so that the lead screw nut transmission assembly can synchronously lift the pickup unit at the same height, the pickup unit is always in a horizontal state, the lifting operation of the pickup unit is realized, and the working efficiency is improved. Therefore, the uniformity and the stability of the bale plucking layer of the bale plucker are ensured.

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 descend, ensure that the thickness of the cotton layer is uniform each time, and provide 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 belt 2 on both sides, and further realize the lifting and lowering of the pickup unit 1.

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

[0006] ① The two ends of the main shaft fixed on the pickup unit 1 are raised and lowered synchronously by two traction belts 2. Since the center of gravity of the pickup unit 1 is not at the center of the transmission shaft 3, the two traction belts 2 are subjected to different forces during actual operation. After long-term operation, due to uneven mechanical friction and temperature differences, the two traction belts 2 will have inconsistent extension and contraction errors due to the magnitude of force, temperature difference, etc., resulting in uneven height of the front and rear sides of the grab arm, which leads to uneven cotton grabbing and, in severe cases, increased lateral running resistance.

[0007] ② The picking unit 1 is suspended by only two traction belts 2 and lacks a locking function to prevent falling. Once the traction belt 2 breaks, the picking unit 1 will fall immediately, causing the cotton grabber to be damaged and stop. In severe cases, it may even cause a safety accident. The problem is very serious and the consequences are unimaginable.

[0008] The applicant has improved the existing technology by using a four-parallel, spaced-apart screw-nut transmission assembly 7 to achieve synchronous lifting and lowering of the picking unit in the cotton grabber. The lifting drive motor 9 drives the screw-nut transmission assembly 7 to rotate synchronously via a synchronous transmission system 8. The screws 71 in the screw-nut transmission assembly 7 are screwed into corresponding nuts 72, and all nuts 72 are fixed to the picking unit 1. During the installation of the screw-nut transmission assembly 7, ensuring that the four nuts are at the same height is a condition for ensuring that the picking unit is in a horizontal position. Therefore, achieving fine-tuning of the nuts in the height direction is a key protected aspect. Figure 2 As shown. Utility Model Content

[0009] The purpose of this utility model is to provide a height fine-adjustment mechanism for the synchronous lifting transmission assembly of the grab arm component of a cotton grabber. During the assembly and debugging of the cotton grabber, this utility model allows for precise fine-adjustment of the height position of the nut fixed on the support pickup unit, ensuring that the screw nut transmission assembly can synchronously and evenly lift the pickup unit, and guaranteeing that the pickup unit remains horizontal at all times, thus achieving the lifting and lowering operation of the pickup unit.

[0010] Ensure the uniformity and stability of the cotton-grabbing layer in the cotton-grabbing machine.

[0011] The technical solution adopted by this utility model is as follows:

[0012] A height adjustment mechanism for a synchronous lifting transmission group of a cotton grabber arm component includes a pickup unit and a screw and nut transmission assembly. The screw and nut transmission assembly includes a nut and a screw. The nuts are fixed on the left and right sides of the pickup unit, and the screws are screwed into the corresponding nuts. All screws are vertically arranged. The nuts are installed on a fine-adjustment seat, which is installed on a base connection seat through a fixed connector. The base connection seat is fixedly installed on the pickup unit, and an adjusting screw is provided between the fine-adjustment seat and the base connection seat.

[0013] Furthermore, slots are symmetrically provided on both sides of the nut.

[0014] Furthermore, the fine-tuning seat includes a vertical connecting plate, a horizontal plate, connecting slots, and fine-tuning screw holes. The horizontal plate is fixed to the upper edge of the vertical connecting plate. At least two sets of connecting slots are provided at intervals on the vertical connecting plate. The fixing connector passes through the connecting slots to install the fine-tuning seat on the base connecting seat. Fine-tuning screw holes are provided at intervals on the horizontal plate. Adjusting screws are screwed into the fine-tuning screw holes. The position of the fine-tuning seat relative to the base connecting seat in the height direction is adjusted by adjusting the screws.

[0015] Furthermore, the fine-tuning seat also includes a U-shaped insert plate, which is horizontally arranged and fixedly connected to the vertical connecting plate. The U-shaped insert plate is located below the horizontal plate and between two vertically distributed connecting slots. The width of the notch on the U-shaped insert plate corresponds to the dimension between the bottom of the two slots on the nut. The depth of the notch is 70% to 95% of the diameter of the nut. The thickness of the U-shaped insert plate corresponds to the width of the slot.

[0016] Because screw and nut assemblies are installed at both ends of the picking unit of the cotton grabber, the nuts in the screw and nut assemblies are fixed to the picking unit, and the two ends of the screw are rotatably fixed to the frame through bearings. The base connecting seat is fixedly installed on the picking unit, and the fine-tuning seat is installed on the base connecting seat through the connecting slot of the vertical connecting plate with a fixed connector. The adjusting screw in the fine-tuning screw hole screwed into the horizontal plate is used to adjust the height position of the fine-tuning seat relative to the base connecting seat. Since the nut is installed on the fine-tuning seat, the actual height position of the nut can be precisely adjusted. In this way, the screw and nut transmission assembly can synchronously and equally lift the picking unit. Since the picking unit can always be in a horizontal state, the uniformity and stability of the cotton grabbing layer of the cotton grabber can be guaranteed, overcoming the shortcomings of the existing technology. Attached Figure Description

[0017] Figure 1 A schematic diagram of the lifting structure of the picking unit on an existing cotton grabber;

[0018] Figure 2 This is a schematic diagram of the structure of the pickup unit that uses a four-screw nut transmission assembly to synchronously lift the pickup unit;

[0019] Figure 3 A schematic diagram of the structure of this utility model;

[0020] Figure 4 for Figure 3 Exploded view of the assembly between the lead screw, nut, fine-tuning seat and basic connecting seat;

[0021] Figure 5 The diagram shows the structure of the fine-tuning seat.

[0022] In the diagram: 1-Pick-up unit; 2-Traction belt; 3-Drive shaft; 4-Cotton grabber frame; 5-Pulley; 6-Winding wheel; 7-Screw and nut transmission assembly; 8-Synchronous transmission system; 9-Lifting drive motor; 71-Screw; 72-Nut; 73-Fine adjustment seat; 74-Base connecting seat; 81-Active meshing wheel; 82-Driven meshing wheel; 83-Tensioning meshing wheel; 84-Meshing transmission belt; 721-Slot; 731-Vertical connecting plate; 732-Horizontal plate; 733-Connecting slot; 734-Fine adjustment screw hole; 735-U-shaped insert plate; 736-Notch. Detailed Implementation

[0023] The specific embodiments of this utility model are illustrated below with reference to the accompanying drawings:

[0024] Example 1: A height fine-adjustment mechanism for the synchronous lifting transmission group of the grab arm component of a cotton grabber, such as... Figures 2-5 As shown, the assembly includes a pickup unit 1 and a lead screw and nut transmission assembly 7. The lead screw and nut transmission assembly 7 includes a nut 72 and a lead screw 71. The nuts 72 are fixed on the left and right sides of the pickup unit 1, and slots 721 are symmetrically provided on both sides of the nuts 72. The lead screws 71 are screwed into the corresponding nuts 72. All lead screws 71 are vertically arranged. The nuts 72 are mounted on a fine-tuning seat 73. The fine-tuning seat 73 includes a vertical connecting plate 731, a horizontal plate 732, a connecting slot 733, and a fine-tuning screw hole 734. The U-shaped insert plate 735 and the horizontal plate 732 are fixed on the upper edge of the vertical connecting plate 731. At least two sets of connecting slots 733 are provided at intervals on the vertical connecting plate 731. The fixing connector passes through the connecting slots 733 to install the fine-tuning seat 73 on the base connecting seat 74. The horizontal plate 732 is provided with fine-tuning screw holes 734 at intervals. The adjusting screw is screwed into the fine-tuning screw hole 734. The position of the fine-tuning seat 73 relative to the base connecting seat 74 in the height direction is adjusted by adjusting the screw. The fine-tuning seat 73 is mounted on the base connecting seat 74 via a fixed connector. The base connecting seat 74 is fixedly mounted on the pickup unit 1. An adjusting screw is provided between the fine-tuning seat 73 and the base connecting seat 74. The U-shaped insert plate 735 is horizontally set and fixedly connected to the vertical connecting plate 731. The U-shaped insert plate 735 is located below the horizontal plate 732 and between two vertically distributed connecting slots 733. The width of the notch 736 on the U-shaped insert plate 735 corresponds to the dimension between the bottom of the two slots 721 on the nut 72. The depth of the notch 736 is 70% to 95% of the diameter of the nut 72. The thickness of the U-shaped insert plate 735 corresponds to the width of the slot 721.

[0025] In a cotton picker, the synchronous lifting transmission mechanism of the picking unit, such as... Figure 2As shown, the system includes a pickup unit 1, four lead screw and nut transmission assemblies 7, a synchronous transmission system 8, and a lifting drive motor 9. Two spaced lead screw and nut transmission assemblies 7 are respectively located on the left and right sides of the pickup unit 1. Nuts 72 in each lead screw and nut transmission assembly 7 are fixed to the pickup unit 1, and lead screws 71 are vertically distributed and screwed into the corresponding nuts 72. The centers of the four lead screw and nut transmission assemblies 7 coincide with the center of gravity of the pickup unit 1. The four 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 with a sprocket and chain structure. In this example, 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. The active meshing wheel 81, the driven meshing wheel 82, and the tensioning meshing wheel 83 are all sprockets of the same module, and the meshing transmission belt 84 is a chain of the same module.

[0026] There are many embodiments of this utility model. In the cotton grabbing machine, any equivalent solution in which the nut has a fine-tuning structure in the height direction in the screw and nut transmission assembly of the lifting and picking unit is within the protection scope of this patent.

Claims

1. A height adjustment mechanism for a synchronous lifting transmission group of a cotton grabber arm component, comprising a pickup unit (1) and a screw and nut transmission assembly (7), wherein the screw and nut transmission assembly (7) comprises a nut (72) and a screw (71), the nut (72) being fixed on the left and right sides of the pickup unit (1), and the screw (71) being screwed into the corresponding nut (72), all screws (71) being vertically arranged, characterized in that the nut (72) Installed on the fine-tuning seat (73), the fine-tuning seat (73) is installed on the base connecting seat (74) through a fixed connector, the base connecting seat (74) is fixedly installed on the pickup unit (1), and an adjusting screw is provided between the fine-tuning seat (73) and the base connecting seat (74).

2. The height adjustment mechanism of the synchronous lifting transmission group of the cotton grabber arm component as described in claim 1, characterized in that: Slots (721) are provided symmetrically on both sides of the nut (72).

3. The height fine-adjustment mechanism of the synchronous lifting transmission group of the cotton grabber arm component as described in claim 1, characterized in that: The fine-tuning seat (73) includes a vertical connecting plate (731), a horizontal plate (732), a connecting slot (733), and a fine-tuning screw hole (734). The horizontal plate (732) is fixed on the upper edge of the vertical connecting plate (731). At least two sets of connecting slots (733) are provided at intervals on the vertical connecting plate (731). The fixing connector passes through the connecting slots (733) to install the fine-tuning seat (73) on the base connecting seat (74). The horizontal plate (732) is provided at intervals with fine-tuning screw holes (734). The adjusting screw is screwed into the fine-tuning screw hole (734). The position of the fine-tuning seat (73) relative to the base connecting seat (74) in the height direction is adjusted by adjusting the adjusting screw.

4. The height adjustment mechanism of the synchronous lifting transmission group of the cotton grabber arm component as described in claim 2 or 3, characterized in that: The fine-tuning seat (73) also includes a U-shaped insert plate (735), which is horizontally set and fixedly connected to the vertical connecting plate (731). The U-shaped insert plate (735) is located below the horizontal plate (732) and between two vertically distributed connecting slots (733). The width of the notch (736) on the U-shaped insert plate (735) corresponds to the dimension between the bottom of the two slots (721) on the nut (72). The depth of the notch (736) is 70% to 95% of the diameter of the nut (72). The thickness of the U-shaped insert plate (735) corresponds to the width of the slot (721).

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