A conveyor belt reversing device for a blower / suction cleaning machine

Abstract

This utility model discloses a conveyor belt commutator for a blower / vacuum cleaning machine, belonging to the technical field of moving parts for cleaning machines. The commutator includes a base plate, a connecting block hinged to the base plate, and a fixing block linked to the connecting block. One side of the base plate has a positioning area with upper and lower positioning holes, and the other side has symmetrically arranged left and right limiting blocks. One end of the connecting block has a ball bearing, and both sides are equipped with elastic nylon pillars. When an external force is applied to the nylon pillars, the connecting block is driven to swing around the hinge axis. The ball bearing is embedded in the positioning hole for precise positioning, and the side of the connecting block abuts against the limiting block to limit the swing amplitude. The fixing block has a slot and upper and lower aligned ball bearings, and the commutator completes the reversing by pressing the conveyor belt. This utility model solves the problems of low accuracy, rapid wear, and difficult maintenance of traditional commutators through the coordinated positioning of the ball bearing and positioning hole, the buffer drive of the nylon pillars, and the design of a detachable positioning area, significantly improving the reliability of the commutator and the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing technology for moving parts of cleaning machines, and in particular to a conveyor belt reversing device for a blow-suction cleaning machine. Background Technology

[0002] In industrial settings such as textile workshops, blower-suction cleaning machines typically need to reciprocate along a preset track to circulate and clean the equipment surfaces. To achieve this reciprocating motion, the cleaning machine's conveyor belt needs to switch positions between the upper and lower transmission slots of the pulleys, thereby changing the direction of transmission. In existing technologies, the reversing operation of the conveyor belt largely relies on manual intervention or simple mechanical structures, which presents the following significant problems:

[0003] Insufficient reversing accuracy: Traditional reversing devices lack a precise positioning mechanism, and the conveyor belt is prone to deviation or jamming during up and down movement, resulting in reversing failure or deviation of the cleaning machine's movement trajectory, which affects cleaning efficiency.

[0004] Severe component wear: The limiting structure is mostly a rigid contact design (such as a metal stop). After long-term use, it is prone to positioning failure due to impact wear, requiring frequent component replacement and increasing the cost of use.

[0005] Inconvenient maintenance: Key positioning components (such as limit blocks and positioning structures) are mostly fixed installations and cannot be disassembled and replaced individually, which requires the entire equipment to be disassembled for maintenance, which is time-consuming and labor-intensive.

[0006] Furthermore, existing commutators mostly employ direct mechanical push-pull drive methods, lacking buffer design, which easily impacts the conveyor belt and drive mechanism, further exacerbating wear problems. Therefore, there is an urgent need for a conveyor belt commutation device that can achieve high-precision commutation, reduce wear, and is easy to maintain, in order to meet the long-term stable operation requirements of cleaning equipment in industrial scenarios. Utility Model Content

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides a conveyor belt reversing device for a blower and suction cleaning machine.

[0008] To achieve the above objectives, the innovative features of this utility model are as follows: its structure includes:

[0009] The substrate has a positioning area on one side and a left limiting block and a right limiting block symmetrically arranged on the other side;

[0010] A connecting block is oscillatingly mounted on a base plate via a hinge shaft, and one end of the connecting block is provided with a ball bearing;

[0011] The fixing block is connected to the other end of the connecting block. The fixing block is provided with a slot for fixing the conveyor belt and vertically aligned rolling balls.

[0012] The positioning area is provided with upper positioning holes and lower positioning holes distributed vertically.

[0013] The connecting block is symmetrically provided with a left nylon column and a right nylon column on both sides. When an external force is applied to the left or right nylon column, the connecting block is driven to swing around the hinge axis. The ball is embedded in the upper or lower positioning hole to achieve positioning. The side of the connecting block abuts against the left or right limit block to limit the swing amplitude, thereby accurately controlling the reversal of the conveyor belt.

[0014] Furthermore, the aforementioned positioning area is made of wear-resistant steel and is detachably connected to the bottom of the base plate and the substrate.

[0015] Furthermore, the aforementioned substrate is provided with a connecting groove, and a base plate is fixed to the bottom of the positioning area. The positioning area is fitted onto the substrate through the connecting groove and fixed to the substrate through the base plate.

[0016] Furthermore, the aforementioned ball is aligned with the slot, and the ball is rotatably pressed against the conveyor belt to guide its up and down movement.

[0017] Furthermore, one end of the substrate is provided with an ear plate, and the right limiting block is fixed on the ear plate; the hinge shaft is provided on the other side of the substrate and is located on the outer side between the left limiting block and the right limiting block.

[0018] Furthermore, both the left and right limiting blocks are circular, and the side of the connecting block abuts against the arc-shaped contact surface of the left or right limiting block.

[0019] Furthermore, the aforementioned left and right nylon columns are located on both sides of the centerline of the hinge axis, and respond to external forces through elastic deformation to drive the connecting block to swing.

[0020] Furthermore, the aforementioned ball is slidably disposed at the end of the connecting block and is adapted to the diameter of the upper and lower positioning holes to achieve precise positioning.

[0021] The beneficial effects of this utility model are:

[0022] 1. High precision: The ball bearing and positioning hole work together to ensure no offset at the reversal endpoint.

[0023] 2. Low wear: Nylon columns provide elastic cushioning to reduce impact, while steel positioning areas extend service life. Attached Figure Description

[0024] Figure 1 This is a structural view of the front of this utility model.

[0025] Figure 2 This is a structural diagram of the back of this utility model.

[0026] Figure 3 This is a structural view of the front side of the substrate of this utility model.

[0027] Figure 4This is a structural diagram of the back side of the substrate of this utility model.

[0028] The reference numerals for each structure are as follows:

[0029] Base plate (1), ball (2), connecting groove (3), ball (4), ear plate (5), connecting block (11), fixing block (12), left limiting block (13), right limiting block (14), positioning area (15), upper positioning hole (16), lower positioning hole (17), hinge shaft (18), left nylon column (19), right nylon column (20), conveyor belt (21), card slot (22), base plate (31). Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1 to 4 In one specific embodiment of this utility model, its structure includes:

[0032] 1. Base plate 1: As the main support structure, a positioning area 15 is provided on one side for precise positioning, and a left limiting block 13 and a right limiting block 14 are symmetrically arranged on the other side to limit the swing amplitude.

[0033] 2. Connecting block 11: It is oscillatingly mounted on the base plate via a hinge shaft 18. One end of it is provided with a ball 2, which is used to embed into the upper positioning hole 16 and the lower positioning hole 17 respectively to achieve positioning. The left nylon column 19 and the right nylon column 20 are symmetrically fixed on both sides and are driven to oscillate by external force.

[0034] 3. Fixed block 12: Connected to the other end of the connecting block, it has a slot 22 to fix the conveyor belt 21 and is equipped with vertically aligned balls 4 to guide the conveyor belt to move up and down.

[0035] 4. Positioning and limiting mechanism: The ball 2 is embedded in the upper positioning hole 16 and the lower positioning hole 17 to achieve the positioning of the swing endpoint. The side part of the connecting block abuts against the left limiting block 13 and the right limiting block 14 respectively to limit the swing amplitude.

[0036] In this invention, the ball 4 and the slot 22 are aligned vertically, and the central axis of the ball 4 is collinear with the opening plane of the slot 22, ensuring that the conveyor belt 21 is guided by the rotation of the ball 4 when it moves; the left nylon column 19 and the right nylon column 20 are symmetrically distributed on both sides of the hinge shaft 18, and the distance between their contact surfaces with the substrate 1 is 20mm, providing buffering through elastic deformation.

[0037] In this invention, the hinge shaft 18 is installed on the side of the base plate 1 and is located in the outer region between the left limiting block 13 and the right limiting block 14; the ear plate 5 is fixed to one end of the base plate 1, the right limiting block 14 is connected to the ear plate by bolts, and the left limiting block 13 is connected to the other side of the base plate 1 by bolts. The two are symmetrically distributed on both sides of the hinge shaft 18, forming a physical constraint on the swing amplitude of the connecting block 11.

[0038] effect:

[0039] The connecting block swings as the nylon column is driven by external force, and the rolling ball and positioning hole work together to achieve precise positioning. The limit block restricts the swing range, ensuring the accuracy and reliability of the conveyor belt reversal.

[0040] In this utility model, as a preferred embodiment, the positioning area 15 is made of wear-resistant steel and is detachably connected to the base plate 1 via the base plate 31.

[0041] effect:

[0042] Wear resistance: The steel positioning area reduces wear caused by long-term use and extends service life.

[0043] Maintainability: The detachable design facilitates the replacement or repair of the positioning area, reducing maintenance costs.

[0044] In this utility model, as a preferred embodiment, a connecting groove 3 is provided on the substrate 1, and the positioning area 15 is fitted into the connecting groove through the bottom plate 31, which is fixed to the bottom of the substrate.

[0045] effect:

[0046] Structural stability: The interlocking design of the connecting groove and the base plate ensures that the positioning area is firmly installed and prevents displacement.

[0047] Modular design: Facilitates quick installation or disassembly of the positioning area, adapting to different working conditions.

[0048] In this utility model, as a preferred embodiment, the ball 4 is aligned with the slot 22, and the ball rotatably presses against the conveyor belt 21.

[0049] effect:

[0050] Guiding accuracy: The ball and slot alignment design ensures stable conveyor belt movement.

[0051] Reduced friction: The rotatable nature of the rolling balls reduces conveyor belt wear.

[0052] In this utility model, as a preferred embodiment, one end of the substrate 1 is provided with an ear plate 5, and the right limiting block 14 is fixed on the ear plate 5; the hinge shaft 18 is provided on the other side of the substrate 1, and is located on the outer side between the left limiting block 13 and the right limiting block 14.

[0053] effect:

[0054] Space optimization: The ear plate design avoids interference between the right limit block and the hinge axis structure, ensuring smooth swing.

[0055] Ease of installation: The fixed position of the limit block is clearly defined, simplifying the assembly process.

[0056] In this utility model, as a preferred embodiment, both the left limiting block and the right limiting block are circular, and the side of the connecting block abuts against the arc-shaped contact surface of the left limiting block or the right limiting block.

[0057] Functionally, the curved surface reduces rigid contact between the connecting block and the left or right limit block, thereby reducing wear between them.

[0058] In this utility model, as a preferred embodiment, the left nylon column 19 and the right nylon column 20 are symmetrically arranged on both sides of the center line of the hinge shaft 18, and the swing is driven by external force through elastic deformation response.

[0059] In this invention, the external force driving source can be a pneumatic push rod (pressure 0.6MPa) or an electromagnetic actuator (thrust 200N), specifically adapted to the cleaning machine control system.

[0060] effect:

[0061] Cushioning and shock absorption: The elastic deformation of nylon material absorbs impact force and reduces wear on parts.

[0062] Drive sensitivity: The symmetrical design ensures uniform force distribution during left and right swings and rapid action response.

[0063] In this utility model, as a preferred embodiment, the ball 2 is slidably disposed at the end of the connecting block 11, and is adapted to the diameter of the upper positioning hole 16 and the lower positioning hole 17 respectively.

[0064] effect:

[0065] Precise positioning: The ball and positioning hole work together to ensure smooth insertion without any wobbling.

[0066] Low-resistance motion: The free sliding of the ball reduces friction and improves the flexibility of its swing. Example Example

[0067] The assembly steps of a conveyor belt reversing device for a blower / vacuum cleaning machine are as follows:

[0068] Substrate mounting: The positioning area 15 is embedded into the connecting groove 3 of the substrate 1 through the base plate 31 and fixed with bolts.

[0069] Connecting block assembly: Install the connecting block 11 onto the base plate 1 via the hinge shaft 18, ensuring that the ball 2 is aligned with the upper positioning hole 16 and the lower positioning hole 17 respectively.

[0070] Fixed block connection: Fix the fixed block 12 to the end of the connecting block 11, and adjust the ball 4 to align with the slot 22.

[0071] Limiting block configuration: The right limiting block 14 is fixed on the ear plate 5, and the left limiting block 13 is fixed on the other side of the base plate 1 and is symmetrically distributed with the right limiting block 14; the hinge shaft 18 is installed on the other side of the base plate 1, located on the outer side between the left limiting block 13 and the right limiting block 14, to ensure that the swing range of the connecting block 11 is limited by the left and right limiting blocks.

[0072] Work process:

[0073] Conveyor belt upward pressure reversal: External force presses down on the right nylon column 20, the connecting block 11 swings counterclockwise, the ball 2 is embedded in the upper positioning hole 16, the right side of the connecting block abuts against the right limit block 14, and the fixing block 12 drives the conveyor belt 21 to move upward.

[0074] Conveyor belt downward reversal: External force presses down on the left nylon column 19, the connecting block 11 swings clockwise, the ball 2 is embedded in the lower positioning hole 17, the left side of the connecting block abuts against the left limit block 13, and the conveyor belt 21 moves down to complete the reversal.

[0075] Example 2 (Preferred Solution)

[0076] The positioning area 15 is made of wear-resistant steel with a thickness of 5mm. The upper positioning hole 16 and the lower positioning hole 17 fit tightly with the ball 2, and the gap is offset by the elastic pre-tightening force of the left nylon column 19 and the right nylon column 20 to ensure that the ball does not wobble after being embedded.

[0077] The left nylon column 19 and the right nylon column 20 are made of PA66 material (elastic modulus 2.8GPa, yield strength 80MPa), with a Shore D75 hardness, dynamic response time ≤0.1 seconds, and can withstand a deformation rate of <3% and a recovery rate of ≥95% when subjected to 200N pressure.

[0078] Industrial applicability

[0079] After testing, the commutator of this invention, after 1000 hours of continuous operation under the test conditions of 200N load, 21m / s conveyor belt speed, and 1000 hours of continuous operation, showed that the wear amount in the positioning area (0.02mm) was 15% of that of the traditional metal stop; the commutation accuracy error was ≤0.5mm (the control group of the traditional scheme was ±2mm, and the test method referred to ISO 9283 standard); the nylon column had a deformation rate of <3% and a recovery rate of ≥95% when subjected to 200N pressure.

[0080] After fatigue testing (frequency 1Hz, 10-5 cycles), the elastic performance of the nylon column decreased by less than 5%, meeting the requirements for long-term use.

[0081] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0082] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0083] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. (e.g., the rolling ball can be replaced with a ceramic ball or a polymer slider) made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A conveyor belt reversing device for a blower / suction cleaning machine, characterized in that, Its structure includes: The substrate has a positioning area on one side and a left limiting block and a right limiting block symmetrically arranged on the other side; A connecting block is pivotally mounted on the base plate via a hinge shaft, and one end of the connecting block is provided with a ball. A fixing block is connected to the other end of the connecting block. The fixing block is provided with a slot for fixing the conveyor belt and vertically aligned rolling balls. The positioning area is provided with upper positioning holes and lower positioning holes distributed vertically. The connecting block is symmetrically provided with a left nylon column and a right nylon column on both sides. When an external force is applied to the left nylon column or the right nylon column, the connecting block is driven to swing around the hinge axis. The ball is embedded in the upper positioning hole or the lower positioning hole to achieve positioning. The side of the connecting block abuts against the left limit block or the right limit block to limit the swing amplitude, thereby accurately controlling the reversal of the conveyor belt.

2. The conveyor belt reversing device for a blower / suction cleaning machine according to claim 1, characterized in that, The positioning area is made of wear-resistant steel and is detachably connected to the bottom of the substrate via a base plate.

3. A conveyor belt reversing device for a blower / suction cleaning machine according to claim 2, characterized in that, The substrate is provided with a connecting groove, and a base plate is fixed to the bottom of the positioning area. The positioning area is fitted onto the substrate through the connecting groove and fixed to the substrate through the base plate.

4. A conveyor belt reversing device for a blower / suction cleaning machine according to claim 1, characterized in that, The ball is aligned with the slot and is rotatably pressed against the conveyor belt to guide its up-and-down movement.

5. A conveyor belt reversing device for a blower / vacuum cleaning machine according to claim 1, characterized in that, One end of the substrate is provided with an ear plate, and the right limiting block is fixed on the ear plate; the hinge shaft is provided on the other side of the substrate and is located on the outer side between the left limiting block and the right limiting block.

6. A conveyor belt reversing device for a blower / suction cleaning machine according to claim 5, characterized in that, Both the left limiting block and the right limiting block are circular, and the side of the connecting block abuts against the arc-shaped contact surface of the left limiting block or the right limiting block.

7. A conveyor belt reversing device for a blower / suction cleaning machine according to claim 1, characterized in that, The left and right nylon columns are located on either side of the centerline of the hinge axis, and the connecting block swings by responding to external forces through elastic deformation.

8. A conveyor belt reversing device for a blower / suction cleaning machine according to claim 1, characterized in that, The ball is slidably disposed at the end of the connecting block and is adapted to the diameter of the upper and lower positioning holes to achieve precise positioning.

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