Crown block track automatic reset sweeping head and sweeping vehicle

Abstract

The invention discloses a crown block track automatic reset cleaning head and a motor sweeper, the cleaning head comprises a cleaning brush, a mounting seat and a fixed bottom plate, the cleaning brush is fixed on the mounting seat, the upper end of the mounting seat is in running fit with the fixed bottom plate through a rotating shaft, and the mounting seat is fixed on a corresponding driving device through the fixed bottom plate. The fixed bottom plate drives the cleaning brush to move to clean the surface of the crown block track; the mounting base of the cleaning brush is rotationally connected with the fixed bottom plate through the rotating shaft, when encountering an obstacle in the cleaning process, the cleaning brush can automatically deflect to avoid the obstacle and reset through the rotating reset mechanism at the end of the rotating shaft, so that the cleaning process is not affected by the obstacle, and the cleaning efficiency is improved. And the cleaning effect on the crown block track is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of overhead crane track cleaning, and in particular to an overhead crane track automatic resetting cleaning head and a cleaning vehicle. Background Art

[0002] In semiconductor factories, dust easily accumulates on the tracks of OHT overhead cranes. Frequent acceleration and deceleration of the trolley causes wheel wear and generates dust, which affects the normal operation of the overhead crane and the positioning accuracy of the trolley, and pollutes the environment. Dust cleaning is required regularly.

[0003] The conventional cleaning method is to use a cleaning trolley to drive the brush to move across the surface of the overhead crane track for cleaning. This method is easily affected by obstacles, making it impossible to thoroughly clean the track. At the same time, the brush depends on the initial installation position and cannot be adjusted according to the on-site situation, so the cleaning effect cannot be guaranteed. Summary of the Invention

[0004] Technical purpose: In view of the shortcomings of existing overhead crane track cleaning equipment, the present invention discloses an overhead crane track automatic resetting cleaning head and a cleaning vehicle.

[0005] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: The invention relates to an automatic reset cleaning head for an overhead crane track, comprising a cleaning brush, a mounting seat and a fixed base plate. The cleaning brush is fixed on the mounting seat, and the upper end of the mounting seat is rotatably engaged with the fixed base plate through a rotating shaft, and is fixed to a corresponding driving device through the fixed base plate. When cleaning, the cleaning brush is driven to move by the fixed base plate to clean the surface of the overhead crane track; a rotary reset mechanism is connected to the end of the rotating shaft, and when the cleaning brush encounters an obstacle during the movement of the overhead crane for cleaning, the force is transmitted to the rotating shaft for deflection, and after crossing the obstacle, the rotating shaft and the cleaning brush are driven to reset by the rotary reset mechanism.

[0006] Preferably, the installation position of the cleaning brush of the present invention on the mounting seat is offset from the axis of the rotating shaft, so that the action force between the cleaning brush and the obstacle is converted into torque to drive the rotating shaft to rotate.

[0007] Preferably, the rotary reset mechanism of the present invention includes a reset base fixed to the upper end of the rotating shaft, and a positioning base arranged at the upper end of the reset base, the positioning base is rotatably coordinated with the rotating shaft, and a tension spring is symmetrically arranged in the positioning base about the axis direction of the rotating shaft, the positioning base is provided with an annular cavity concentric with the rotating shaft, and the reset base is provided with a reset drive head extending into the annular cavity, two tension springs are arranged in the annular cavity, one end is fixed to the positioning base, and the other end is connected to the reset drive head of the reset base.

[0008] Preferably, the tension spring of the present invention is in a pre-tensioned state, applying tension to the reset drive head, generating torque at the axis center of the rotating shaft, and the tension of the two tension springs keeps the position of the rotating shaft fixed; after the cleaning brush encounters an obstacle and is subjected to force, a torque is generated on the rotating shaft, breaking the balance of the tension spring, and the rotating shaft rotates. The tension of the tension spring on the side opposite to the rotation direction of the rotating shaft increases, and after the cleaning brush bypasses the obstacle, it resets under the tension of the tension spring and continues to maintain the cleaning state of the overhead crane track.

[0009] Preferably, the rotating shaft and the fixed base plate of the present invention are connected by a linear bearing, and a pressure spring is sleeved on the rotating shaft. One end of the pressure spring abuts against the linear bearing, and the other end abuts against the surface of the mounting seat. The pressure spring applies cleaning pressure to the cleaning brush, so that the cleaning brush is close to the surface of the overhead crane track.

[0010] Preferably, the reset base and the mounting seat of the present invention are both detachably fixed by a locking screw passed through the end of the rotating shaft. The screw fixing the reset base is a cross-shaped structure, and the upper part is rotatably matched with the positioning base through a rotating bearing. When the pressure spring presses down the mounting seat, the rotating shaft, the reset base and the positioning base move downward synchronously; a guide column for guiding the movement of the positioning base is provided on the fixed base plate, and the positioning base is slidably matched with the guide column, and the rotation of the positioning base is limited by the guide column.

[0011] The present invention discloses a sweeper, which uses the above-mentioned automatic resetting sweeping head and includes a moving trolley used to be connected to a fixed base plate and drive the automatic resetting sweeping head to move along the overhead crane track, and a dust collection box connected to the bottom of the moving trolley and moving synchronously with the moving trolley. The dust collection end of the dust collection box is facing the bottom of the overhead crane track to absorb dust generated during the cleaning process.

[0012] Beneficial effects: The automatic resetting cleaning head and cleaning vehicle for overhead crane tracks disclosed in the present invention have the following beneficial effects: 1. The mounting base of the cleaning brush of the present invention is rotatably connected to the fixed base plate through a rotating shaft. When encountering an obstacle during the cleaning process, it can deflect on its own to avoid the obstacle and reset itself through the rotary reset mechanism at the end of the rotating shaft, so that the cleaning process is not affected by obstacles and the cleaning effect of the overhead crane track is guaranteed.

[0013] 2. The staggered arrangement of the cleaning brush and the rotating shaft of the present invention is beneficial to the transmission of torque, thereby reducing the upper limit of the rotational force. Even if the force is small, the rotating shaft can be driven to rotate, reducing the damage to the structure caused by the obstacle avoidance process.

[0014] 3. The rotary reset mechanism of the present invention is realized by using two tension springs arranged in the annular cavity. Within a limited space, the tension of the spring itself is used to realize the rotation and reset of the rotating shaft. It has a compact structure and is flexible to use. There is no need to set up a separate active drive structure, thereby simplifying the structure of the cleaning head.

[0015] 4. The present invention sets a pressure spring on the rotating shaft, and uses the pressure spring to apply pressure to the cleaning head so that it can maintain contact with the overhead crane track. Even when the cleaning brush is worn, the cleaning effect of the overhead crane track can be continuously maintained, and adaptive adjustments can be made according to the surface changes of the track during the cleaning process, thereby ensuring the cleaning effect while reducing the difficulty of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments or the prior art.

[0017] Figure 1 It is a structural diagram of the cleaning head of the present invention; Figure 2 This is a schematic diagram of the cooperation between the sweeper and the overhead crane track of the present invention; Among them, 1-cleaning brush, 2-mounting seat, 3-fixed base, 4-rotating shaft, 5-rotational reset mechanism, 6-reset base, 7-positioning base, 8-tension spring, 9-reset drive head, 10-linear bearing, 11-pressure spring, 12-locking screw, 13-rotating bearing, 14-guide column, 15-moving trolley, 16-dust box, 17-overhead crane track, 18-limit screw. DETAILED DESCRIPTION

[0018] Reference will now be made in detail to the embodiments of the present disclosure, one or more examples of which are set forth herein below. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and is not intended to be limiting. On the contrary, the following description provides a convenient illustration of exemplary embodiments for implementing the present disclosure. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made within the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0019] like Figure 1As shown, the present invention discloses an automatic resetting cleaning head for an overhead crane track, comprising a cleaning brush 1, a mounting seat 2 and a fixed base plate 3. The cleaning brush 1 is fixed on the mounting seat 2, and the upper end of the mounting seat 2 is rotatably matched with the fixed base plate 3 through a rotating shaft 4, and is fixed to a corresponding driving device through the fixed base plate 3. When cleaning, the cleaning brush 1 is driven to move by the fixed base plate 3 to clean the surface of the overhead crane track; a rotary resetting mechanism 5 is connected to the end of the rotating shaft 4, and when the cleaning brush 1 encounters an obstacle during the movement of the overhead crane for cleaning, the force is transmitted to the rotating shaft 4 for deflection. After crossing the obstacle, the rotating shaft 4 and the cleaning brush 1 are driven to reset by the rotary resetting mechanism 5.

[0020] The installation position of the cleaning brush 1 of the present invention on the mounting seat 2 is staggered with the axis of the rotating shaft 4, so that the action force between the cleaning brush 1 and the obstacle is converted into torque to drive the rotating shaft 4 to rotate. The staggered setting increases the force arm between the cleaning brush and the rotating shaft. When avoiding obstacles, only a smaller interaction force is needed to drive the rotating shaft to rotate to avoid obstacles, thereby reducing the wear of the structure and indirectly increasing the service life of the cleaning head.

[0021] In a specific embodiment, the rotary reset mechanism 5 of the present invention includes a reset base 6 fixed to the upper end of the rotating shaft 4, and a positioning base 7 arranged at the upper end of the reset base 6. The positioning base 7 is rotatably matched with the rotating shaft 4. A tension spring 8 is symmetrically arranged in the positioning base 7 about the axial direction of the rotating shaft 4. The positioning base 7 is provided with an annular cavity concentric with the rotating shaft 4. The reset base 6 is provided with a reset drive head 9 extending into the annular cavity. Two tension springs 8 are arranged in the annular cavity, one end of which is fixed to the positioning base 7 and the other end is connected to the reset drive head 9 of the reset base 6.

[0022] The tension spring 8 of the present invention is in a pre-tensioned state, applying tension to the reset drive head 9, generating torque at the axis center of the rotating shaft 4, and the tension of the two tension springs 8 keeps the rotating shaft 4 fixed in position; after the cleaning brush 1 encounters an obstacle and is subjected to force, a torque is generated on the rotating shaft 4, breaking the balance of the tension spring 8, and the rotating shaft 4 rotates. The tension of the tension spring on the side opposite to the rotation direction of the rotating shaft 4 increases, and after the cleaning brush bypasses the obstacle, it resets under the tension of the tension spring 7, and continues to maintain the cleaning state of the overhead crane track.

[0023] By setting the annular cavity, the tension direction of the tension spring is along the tangential direction of the circumference of the rotating shaft, which reduces the tension demand for reset. At the same time, when the rotating shaft rotates, the tension spring consistent with the rotation direction will switch to a compressed state, thereby buffering the rotation of the cleaning brush and the rotating shaft, ensuring smooth rotation and obstacle avoidance. The present invention realizes automatic reset of the rotating shaft through two tension springs, and does not need to set up a separate active drive device. The space occupied by the rotation reset mechanism can be reduced, meeting the use requirements of the cleaning vehicle on the overhead crane track.

[0024] During the overhead crane track cleaning process, in addition to obstacle avoidance cleaning, it is also necessary to ensure the contact pressure between the cleaning brush 1 and the overhead crane track surface so that it can complete the dust cleaning on the surface; for this purpose, the present invention provides embodiment 2 to further ensure the cleaning effect. Example

[0025] like Figure 1 As shown, the rotating shaft 4 of the present invention is connected to the fixed base plate 3 through a linear bearing 10, and a pressure spring 11 is sleeved on the rotating shaft 4. One end of the pressure spring 11 abuts against the linear bearing 10, and the other end abuts against the surface of the mounting seat 2. The pressure spring 11 applies cleaning pressure to the cleaning brush 1, so that the cleaning brush 1 is close to the surface of the overhead crane track.

[0026] The pressure of the pressure spring 11 can continuously maintain the contact pressure between the cleaning brush 1 and the overhead crane track surface, thereby ensuring the cleaning effect. Even if the cleaning brush 1 is worn, the pressure of the pressure spring can be used to continue to maintain the cleaning of the overhead crane track surface for a short time.

[0027] In embodiment 2 of the present invention, it is necessary to enable the mounting seat 2 and the cleaning brush 1 to have the freedom to move downward when subjected to the pressure applied by the pressure spring 11. The reset base 6 and the mounting seat 2 of the present invention are both detachably fixed by a locking screw 12 passed through the end of the rotating shaft 4. The screw for fixing the reset base 6 is a cross-shaped structure, and the upper part is rotated with the positioning base 7 through a rotating bearing 13. When the pressure spring 11 presses down the mounting seat 2, the rotating shaft 4, the reset base 6 and the positioning base 7 move downward synchronously; a guide column 14 for guiding the movement of the positioning base 7 is provided on the fixed base plate 3, and the positioning base 7 is slidably matched with the guide column 14, and the rotation of the positioning base 7 is limited by the guide column 14. A limit screw 18 is provided at the upper end of the guide column 14 to limit the upward movement stroke of the positioning base 7.

[0028] In addition, the mounting base 2 can also be set to slide with the rotating shaft 4, and only torque is transmitted between the two. In this embodiment, the rotating shaft 4 and the rotation reset mechanism thereon do not need to move downward synchronously.

[0029] The present invention also discloses a sweeper, which uses the automatic reset sweeping head of the above-mentioned embodiment 1 and embodiment 2, such as Figure 2 As shown, it includes a moving trolley 15 connected to the fixed base plate 3 to drive the automatic reset cleaning head to move along the overhead crane track, and a dust collection box 16 connected to the bottom of the moving trolley 15 and moving synchronously with the moving trolley 15. The dust collection end of the dust collection box 16 is facing the bottom of the overhead crane track 17, and the dust generated during the cleaning process is absorbed.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic reset cleaning head for overhead crane track, characterized in that: The invention comprises a cleaning brush (1), a mounting seat (2) and a fixed base plate (3), wherein the cleaning brush (1) is fixed on the mounting seat (2), and the upper end of the mounting seat (2) is rotatably matched with the fixed base plate (3) through a rotating shaft (4), and is fixed to a corresponding driving device through the fixed base plate (3). When cleaning, the cleaning brush (1) is driven by the fixed base plate (3) to move and clean the surface of the overhead crane track; a rotary reset mechanism (5) is connected to the end of the rotary shaft (4), and when the overhead crane moves and encounters an obstacle, the cleaning brush (1) is subjected to force transmitted to the rotary shaft (4) for deflection. After crossing the obstacle, the rotary reset mechanism (5) drives the rotary shaft (4) and the cleaning brush (1) to reset.

2. The automatic resetting cleaning head for overhead crane track according to claim 1 is characterized in that: The installation position of the cleaning brush (1) on the installation seat (2) and the axis of the rotating shaft (4) are mutually offset, so that the action force between the cleaning brush (1) and the obstacle is converted into torque to drive the rotating shaft (4) to rotate.

3. The automatic resetting cleaning head for overhead crane track according to claim 1, characterized in that: The rotary reset mechanism (5) comprises a reset base (6) fixed to the upper end of the rotating shaft (4), and a positioning base (7) arranged at the upper end of the reset base (6); the positioning base (7) is rotatably matched with the rotating shaft (4); a tension spring (8) is symmetrically arranged in the positioning base (7) about the axis direction of the rotating shaft (4); the positioning base (7) is provided with an annular cavity concentric with the rotating shaft (4); the reset base (6) is provided with a reset drive head (9) extending into the annular cavity; two tension springs (8) are arranged in the annular cavity, one end of which is fixed to the positioning base (7) and the other end of which is connected to the reset drive head (9) of the reset base (6).

4. The automatic resetting cleaning head for overhead crane track according to claim 3 is characterized in that: The tension spring (8) is in a pre-tensioned state, exerting a pulling force on the reset drive head (9), generating a torque at the axis of the rotating shaft (4), and the tension of the two tension springs (8) keeps the rotating shaft (4) in a fixed position; after the cleaning brush (1) encounters an obstacle and is subjected to force, a torque is generated on the rotating shaft (4), breaking the balance of the tension spring (8), causing the rotating shaft (4) to rotate, and the tension of the tension spring on the side opposite to the rotation direction of the rotating shaft (4) increases. After the cleaning brush bypasses the obstacle, it resets under the tension of the tension spring (7), and continues to maintain the cleaning state of the overhead crane track.

5. The automatic resetting cleaning head for overhead crane track according to claim 3 is characterized in that: The rotating shaft (4) and the fixed base plate (3) are connected by a linear bearing (10). A pressure spring (11) is sleeved on the rotating shaft (4). One end of the pressure spring (11) abuts against the linear bearing (10), and the other end abuts against the surface of the mounting seat (2). The pressure spring (11) applies cleaning pressure to the cleaning brush (1), so that the cleaning brush (1) is closely attached to the surface of the overhead crane track.

6. The automatic resetting cleaning head for overhead crane track according to claim 5, characterized in that: The reset base (6) and the mounting base (2) are both detachably fixed by a locking screw (12) passing through the end of the rotating shaft (4); the screw fixing the reset base (6) is a cross-shaped structure, and the upper part is rotationally matched with the positioning base (7) through a rotating bearing (13); when the pressure spring (11) presses down the mounting base (2), the rotating shaft (4), the reset base (6) and the positioning base (7) move downward synchronously; a guide column (14) for guiding the movement of the positioning base (7) is provided on the fixed base plate (3); the positioning base (7) is slidably matched with the guide column (14), and the rotation of the positioning base (7) is limited by the guide column (14).

7. A sweeper, using the automatic reset sweeper head according to any one of claims 1 to 5, characterized in that: The invention comprises a movable trolley (15) connected to a fixed base plate (3) for driving an automatic reset cleaning head to move along the overhead crane track, and a dust collection box (16) connected to the bottom of the movable trolley (15) and moving synchronously with the movable trolley (15). The dust collection end of the dust collection box (16) faces the bottom of the overhead crane track (17) and absorbs dust generated during the cleaning process.

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