Anti-locking driving device

Abstract

The utility model discloses an anti-locking driving device which comprises a driving assembly and a rack, the driving assembly comprises a motor and a gear in transmission connection with the output end of the motor, and the gear is meshed with the rack; the gear is used for being arranged on one of the main working beam and the rack, and the rack is used for being arranged on the other one of the main working beam and the rack; the gear and rack mechanism capable of being separated and meshed is arranged between the main working beam and the rack, when the motor drives the gear to rotate, the main working beam moves within the preset length range, when the transverse moving position of the main working beam exceeds the preset range, the gear is separated from the rack, the driving force to the main working beam is cut off, and therefore the motor is prevented from being stuck or damaged, and the service life of the main working beam is prolonged. And the maintenance cost of the polishing and brushing equipment is reduced, and the steel plate polishing and brushing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of strip grinding, and in particular to an anti-jamming drive device. Background Technology

[0002] Steel plates, also known as strips, are rolled up and stored after production, which is commonly known as steel coils. Steel coils go to the corresponding product manufacturing plants according to different usage requirements and are made into corresponding parts. During the period from when the strip enters the processing plant to when it is cut, the strip reacts with moisture and chemicals in the air, causing the surface material of the strip to rust. In order to remove the rust layer, the surface of the strip needs to be polished by steel plate grinding equipment.

[0003] like Figure 4 As shown, the steel plate grinding equipment designed by the applicant has a working beam 2 installed on the frame 1. Two bearing seats for clamping brush rollers are installed at the lower end of the working beam 2. The working beam 2 can move along the width direction of the plate strip on the frame 1 to adjust the grinding position of the brush rollers on the plate strip. The frame 1 is equipped with a driving device, which includes a screw nut 21 fixed on the working beam. A screw rod 22 is screwed on the screw nut 21. The outer end of the screw rod 22 is connected to a drive motor 23. When the drive motor 23 is working, it can drive the screw rod to rotate and drive the working beam 2 to move along the width direction of the plate strip.

[0004] The lead screw 22 has a helical section. When the drive motor 23 drives the lead screw to rotate, the lead nut 21 can only move on the helical section. If it exceeds the helical section, the drive motor 23 will jam. Therefore, in order to ensure that the movement distance of the working beam 2 is within a reasonable range and to prevent the drive motor 23 from jamming, a protective component is set between the frame 1 and the working beam 2. The protective component includes a detection plate 411 connected to the working beam and two sensors 4 set on the frame at intervals along the movement direction of the working beam. The controller is electrically connected to the sensors 4 and the drive motor 23. When the working beam moves and makes any detection plate 411 correspond to the position of the corresponding sensor 4, the controller can control the drive motor 23 to stop rotating to avoid the drive motor 23 jamming.

[0005] However, the environment inside the steel plate grinding equipment is quite harsh, often splashing iron filings and sewage. Sensor 4 is easily affected and malfunctions. Without the detection of sensor 4, the working beam 2 will exceed its range of motion, causing the drive motor 23 to jam and be damaged. Replacing the drive motor 23 will take a long time, which will not only increase the maintenance cost of the equipment, but also affect the grinding efficiency of the plate and strip. Summary of the Invention

[0006] This utility model provides an anti-jamming drive device. By setting a separable and meshing gear and rack mechanism between the working beam and the frame, when the motor drives the gear to rotate, the working beam moves within a predetermined length range. When the lateral movement of the working beam exceeds the predetermined range, the gear and rack separate and cut off the driving force on the working beam, thereby preventing the motor from jamming or being damaged, reducing the maintenance cost of the brushing equipment, and improving the efficiency of steel plate brushing.

[0007] The technical solution of this utility model is implemented as follows:

[0008] An anti-jamming drive device includes a drive assembly and a rack. The drive assembly includes a motor and a gear that is pulsatorically connected to the output end of the motor. The gear and the rack mesh with each other. The gear is used to be mounted on one of the working beam and the frame, and the rack is used to be mounted on the other of the working beam and the frame.

[0009] The drive unit has a working state and a protection state. When the drive unit is in the working state, the motor works and the gear rotates to drive the working beam to move within a predetermined length range. When the position of the working beam exceeds the predetermined range, the drive unit switches to the protection state. At this time, the gear and rack separate to cut off the driving force of the drive assembly on the working beam.

[0010] Preferably, the drive assembly also includes a motor mount, which includes a mounting plate for mounting on a frame or main beam. A fixing plate for mounting the motor is vertically connected to the mounting plate. The fixing plate has clearance holes. The motor has an output shaft that passes through the clearance holes and forms a transmission connection with a gear.

[0011] As a preferred option, a reinforcing plate is fixedly connected between the mounting plate and the fixing plate to ensure the structural stability of the motor base and prevent deformation.

[0012] Preferably, the motor has an output shaft, and the gear has a central hole in the middle. The output shaft passes through the central hole and is circumferentially fixed to the gear by a key connection, so that the output shaft and the gear form a transmission connection; so that the motor drives the gear to rotate.

[0013] Preferably, the output shaft of the motor is provided with a positioning component, which includes a bushing close to the side of the motor and fitted on the output shaft, and a positioning cover close to the outer end of the output shaft. The bushing abuts against one end of the gear, and the positioning cover presses against the other end of the gear and is locked to the outer end face of the output shaft with screws, so that the gear is kept axially fixed on the output shaft and prevents the gear from moving axially on the output shaft.

[0014] As a preferred option, the bushing and gear are integrally formed; the integral design simplifies the installation structure and improves assembly efficiency.

[0015] Preferably, the rack length ranges from 8cm to 20cm.

[0016] Preferably, the central axis of the gear extends vertically, and the gear and rack are at the same height.

[0017] The beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0018] In this invention, a gear and rack mesh to drive the working beam to move laterally. When the working beam moves within a predetermined range, the motor drives the gear to rotate, causing the meshing gear and rack to generate a lateral driving force on the working beam. When the working beam exceeds the predetermined range, the gear and rack disengage, preventing the working beam from continuing to move laterally. Compared to a motor-driven screw and nut mechanism, the separable gear and rack effectively prevent the motor from jamming, reduce the maintenance cost of the steel plate grinding equipment, avoid long-term downtime of the steel plate grinding equipment due to motor replacement, and improve the efficiency of the steel plate grinding. Attached Figure Description

[0019] Figure 1 Structural diagram of the drive unit to prevent jamming;

[0020] Figure 2 This is an enlarged view of the gear meshing with the rack;

[0021] Figure 3 This is a cross-sectional view of the driving component;

[0022] Figure 4 The background section presents a schematic diagram of the existing drive device and the main working beam.

[0023] The attached figures are labeled as follows: 1-frame, 2-main working beam, 3-motor, 4-detection plate, 21-nut, 22-lead screw, 23-drive motor, 31-motor base, 32-gear, 33-rack, 311-fixed plate, 312-mounting plate, 313-reinforcing plate, 321-shaft sleeve, 322-positioning cover, 41-sensor. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] The specific embodiments of this utility model are as follows:

[0027] like Figure 1-3 As shown, this embodiment provides an anti-jamming drive device. This device improves upon the problem of drive motor 23 jamming and being damaged due to the jamming of the lead screw and nut mechanism when the lateral movement position of the working beam 2 exceeds a predetermined range. Specifically, the device includes a drive assembly and a rack 33. The drive assembly includes a motor 3 and a gear 32 that is connected to the output end of the motor 3. The gear 32 and the rack 33 mesh with each other. The length of the rack 33 matches the predetermined lateral movement range of the working beam 2. The gear 32 is used to be mounted on one of the working beam 2 and the frame 1, and the rack 33 is used to be mounted on the other of the working beam 2 and the frame 1. The frame 1 is provided with two spaced sensors 4, and the working beam 2 is provided with a detection plate 41. The predetermined range of motion of the working beam 2 is the range of motion of the detection plate 41 between the two sensors 4. The motor 3 and the sensors 4 are electrically connected to a controller (not shown). When the position of the detection plate 41 is about to exceed the distance between the two sensors 4, the controller can control the motor 3 to stop through the feedback of the sensors 4.

[0028] The drive unit has a working state and a protection state. When the drive unit is in the working state, the motor 3 works and the gear 32 rotates to drive the working beam 2 to move within a predetermined length range. At this time, the detection plate 41 does not exceed the distance between the two sensors 4. When the corresponding sensor 4 fails or is damaged, it will cause the detection to fail. Therefore, the motor 3 will continue to rotate, causing the position of the working beam 2 to exceed the predetermined range. At this time, the drive unit switches to the protection state. At this time, the gear 32 and the rack 33 separate to cut off the driving force of the drive assembly on the working beam 2. Since the gear 32 and the rack 33 are separated, the motor 3 can continue to drive the gear 32 to rotate without jamming or being damaged. There is no need to replace the motor 3. Only the damaged sensor 4 needs to be replaced. Therefore, the maintenance cost of the steel plate grinding equipment is reduced, the equipment is avoided from being shut down for a long time, and the efficiency of steel plate grinding is indirectly improved.

[0029] Furthermore, such as Figure 3 As shown, the installation structure of motor 3 is as follows: The drive assembly also includes a motor base 31, which includes a mounting plate 312 for mounting on the frame 1 or the main working beam 2. A fixing plate 311 for mounting motor 3 is vertically connected to the mounting plate 312. The fixing plate 311 is provided with a clearance hole. Motor 3 has an output shaft that passes through the clearance hole and forms a transmission connection with gear 32. To ensure that motor base 31 does not deform after motor 3 has been working for a long time, a reinforcing plate 313 is fixedly connected between the mounting plate 312 and the fixing plate 311. The reinforcing plate 313 makes the structure of fixing plate 311 and mounting plate 312 stronger and less prone to deformation.

[0030] Furthermore, the transmission connection structure between the motor 3 and the gear 32 is as follows: the motor 3 has an output shaft, and the gear 32 has a central hole in the middle. The output shaft passes through the central hole and is circumferentially fixed to the gear 32 through a key connection, so that the output shaft and the gear 32 form a transmission connection; so that the motor 3 drives the gear 32 to rotate; in order to prevent the gear 32 fitted on the output shaft from moving along the output shaft, the output shaft of the motor 3 is provided with a positioning component. The positioning component includes a bushing 321 close to the side of the motor 3 and fitted on the output shaft, and a positioning cover 322 close to the outer end of the output shaft. The bushing 321 abuts against one end of the gear 32, and the positioning cover 322 presses the other end of the gear 32 and is locked to the outer end face of the output shaft with screws, so that the gear 32 is axially fixed on the output shaft; preventing the gear 32 from moving axially on the output shaft; wherein, in order to reduce the time of assembling the gear 32 on the output shaft, the bushing 321 and the gear 32 are integrally formed; the integrally formed design simplifies the installation structure and improves the assembly efficiency.

[0031] Furthermore, considering that the brush roller needs to brush strips of different widths, the predetermined movable length of the working beam 2 needs to be within a reasonable range. If the range is too large, the working beam 2 will slide excessively on the frame 1, which may cause it to collide and interfere with other components. If the range is too small, it will be difficult to effectively brush strips of different widths. Therefore, in this embodiment, the length range of the rack 33 is 8cm-20cm. This length range corresponds to the predetermined movable length range of the working beam 1, so that the working beam 1 can change the brushing position of the brush roller to ensure that the brush roller can brush strips of the corresponding width.

[0032] Furthermore, in order to optimize the structural layout within the brush grinding equipment and reduce the space occupied by the drive unit, in this embodiment, the gear 32 is mounted on the working beam 2, the rack 33 is mounted on the frame 1, and the rack 33 is in a horizontal position with the teeth of the rack 33 aligned with the gear 32; the central axis of the gear 32 extends vertically, the motor 3 is located above the gear 32, and the gear 32 and the rack 33 are at the same height and fully mesh with the teeth of the rack 33.

[0033] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A jam-prevention driving device characterized by comprising: The driving assembly comprises a motor (3), a gear (32) in transmission connection with the output end of the motor (3), and a rack (33) in meshing connection with the gear (32); the gear (32) is arranged on one of the working beam (2) and the frame (1), and the rack (33) is arranged on the other of the working beam (2) and the frame (1); The driving device has a working state and a protection state; when the driving device is in the working state, the motor (3) works and drives the gear (32) to rotate, so as to drive the working beam (2) to move within a predetermined length range; when the position of the working beam (2) exceeds the predetermined range, the driving device is switched to the protection state, and the gear (32) is separated from the rack (33) to cut off the driving force of the driving assembly on the working beam (2).

2. The anti-stiction actuation apparatus of claim 1, wherein: The driving assembly further comprises a motor base (31), which comprises a mounting plate (312) arranged on the frame (1) or the working beam (2), and a fixing plate (311) vertically connected to the mounting plate (312) and arranged to mount the motor (3); the fixing plate (311) is provided with an avoiding hole, the motor (3) has an output shaft, the output shaft passes through the avoiding hole and is in transmission connection with the gear (32).

3. The anti-stiction actuation apparatus of claim 1, wherein: A reinforcing plate (313) is fixedly connected between the mounting plate (312) and the fixing plate (311).

4. The anti-stiction actuation apparatus of claim 1, wherein: The motor (3) has an output shaft, the gear (32) is provided with a central hole in the middle, the output shaft is arranged in the central hole and is fixedly connected with the gear (32) by a key, so that the output shaft and the gear (32) are in transmission connection.

5. A device according to claim 4, wherein: The output shaft of the motor (3) is provided with a positioning assembly, which comprises a shaft sleeve (321) arranged on the output shaft and close to the motor (3), and a positioning gland (322) arranged close to the outer end of the output shaft; the shaft sleeve (321) abuts against one end of the gear (32), and the positioning gland (322) tightly presses the other end of the gear (32) and is locked on the outer end surface of the output shaft by a screw, so that the gear (32) is axially fixed on the output shaft.

6. A device according to claim 5, wherein: The shaft sleeve (321) and the gear (32) are integrally formed.

7. The anti-stiction actuation apparatus of claim 1, wherein: The length of the rack (33) is 8cm-20cm.

8. The anti-stiction actuation apparatus of claim 1, wherein: The central axis of the gear (32) extends in the vertical direction, and the gear (32) and the rack (33) are at the same height.

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