Weld joint polishing device for metal ring of concrete well lid

Abstract

The utility model discloses a weld joint polishing device for a metal ring of a concrete well lid, which comprises a rack, a shaping device for polishing the metal ring is mounted on the rack, a grinding wheel of the shaping device extends out of a channel at the top of the rack, and a clamping device for clamping the metal ring is further mounted at the top of the rack. A supporting disc is rotatably mounted at the top of the rack, the supporting disc is in transmission connection with a driving device mounted on the rack so as to drive the supporting disc to rotate in a reciprocating manner, and the clamping device is mounted on the supporting disc; a notch is formed in the position, corresponding to the grinding wheel, of the edge of the supporting disc. By arranging the supporting disc capable of rotating in a reciprocating mode, when the supporting disc drives the metal ring to rotate, the shaping device is started, the welding seam of the metal ring rotationally passes through the grinding wheel of the shaping device to be ground, and when the metal ring is placed, the welding seam of the metal ring can be placed within a fan-shaped range, so that the metal ring is placed more conveniently and flexibly.

Description

Technical Field

[0001] This utility model relates to the technical field of reinforced concrete manhole cover production equipment, and in particular to a weld grinding device for metal rings of concrete manhole covers. Background Technology

[0002] The outer circumference of the reinforced concrete manhole cover is equipped with a metal ring. The metal ring is made by cutting flat steel to a suitable length and then bending it into a ring. The two ends of the ring are fixed by welding. Therefore, the weld seam needs to be ground to make the appearance of the metal ring weld seam smoother.

[0003] Chinese patent document CN213004296U discloses a grinding device for weld joints of reinforced concrete manhole covers, comprising an operating platform with a semi-enclosed cavity structure. The top of the operating platform has a first channel and a second channel. The first channel contains an inner ring grinding device for grinding the inner ring of the clamp, and the second channel contains an outer ring grinding device for grinding the outer ring of the clamp. The bottom of the inner ring grinding device is fixedly connected to the top of a first sliding table, and the bottom of the outer ring grinding device is fixedly connected to the top of a second sliding table. Both the first and second sliding tables slide in opposite directions with a slide rail. This device can simultaneously and quickly grind both the inner and outer rings of the clamp, greatly improving grinding efficiency and reducing the labor intensity of workers. However, in actual use, the weld joint of the clamp needs to be accurately placed between the first and second grinding discs. If the weld joint is misplaced, grinding cannot be performed at the weld joint, resulting in inconvenience in clamp placement. Utility Model Content

[0004] The purpose of this invention is to provide a weld grinding device for metal rings of concrete manhole covers. By setting a support plate that can reciprocate, when the support plate drives the metal ring to rotate, the shaping device is activated. The weld of the metal ring rotates through the grinding wheel of the shaping device to grind the weld. When placing the metal ring, the weld of the metal ring can be placed within a fan-shaped range, making the placement of the metal ring more convenient and flexible.

[0005] To achieve the above objectives, this utility model provides a weld grinding device for metal rings of concrete manhole covers, including a frame, a shaping device for grinding the metal ring mounted on the frame, a grinding wheel of the shaping device extending from a channel at the top of the frame, a clamping device for holding the metal ring mounted at the top of the frame, a support plate rotatably mounted at the top of the frame, the support plate being connected to a drive device mounted on the frame to drive the support plate to reciprocate, and the clamping device being mounted on the support plate; the edge of the support plate has a notch at the position corresponding to the grinding wheel.

[0006] The driving device is a motor, which is installed on the lower side of the top surface of the frame. The output shaft of the motor extends upward from the top surface of the frame, and the support plate is fixedly installed on the output shaft of the motor.

[0007] A support shaft is fixedly connected to the bottom center of the support plate, and the support shaft is rotatably connected to the frame through a bearing; the drive device includes a first push rod device and a crank arm, one end of the crank arm is fixedly connected to the support shaft, and the other end is hinged to one end of the first push rod device, and the other end of the first push rod device is hinged to the frame.

[0008] A support sleeve is fixedly installed on the top of the frame, and a bearing is installed inside the support sleeve.

[0009] The clamping device includes at least two second push rod devices, which are evenly distributed in a ring on the support plate. The telescopic ends of the second push rod devices face the center of the support plate, and clamping elements are installed at the telescopic ends of the second push rod devices.

[0010] The clamping element is either a clamping block or an arc-shaped plate.

[0011] A stop block is installed on the support plate at the position corresponding to the second push rod device, and the second push rod device is installed on the stop block.

[0012] The shaping device includes linear guides, a slider, a support, a bearing housing, a mounting base, a ball screw, a driver, and a grinding motor. Two linear guides are mounted parallel to each other on the base plate. A slider is mounted on the linear guides, and the support is mounted on the slider. The grinding motor is mounted on the support, and the output shaft of the grinding motor extends upward through a channel. The grinding wheel for grinding is mounted on the output shaft of the grinding motor. A bearing housing is mounted on one end of the upper side of the base plate, and a mounting base is fixedly mounted on the other end. The driver is mounted on the mounting base. One end of the ball screw is rotatably connected to the bearing housing, and the other end is connected to the output shaft of the driver via a coupling. A screw nut is mounted on the bottom of the support, and the screw nut is threadedly engaged with the ball screw.

[0013] Two supports are mounted on each of the two linear guides via sliders. The ball screw is a forward and reverse threaded screw. When the ball screw rotates, the two supports move synchronously towards or away from each other.

[0014] Compared with the prior art, this utility model has the following technical effects:

[0015] The driving device of this utility model is used to drive the support plate to reciprocate, and the clamping device is used to clamp the metal ring. When the support plate drives the metal ring to rotate, the shaping device is started. The weld of the metal ring rotates through the grinding wheel of the shaping device to grind the weld. When placing the metal ring, the weld of the metal ring can be placed within the fan-shaped range of the notch, making the placement of the metal ring more convenient and flexible. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0018] Figure 2 This is a top view of the structure of this utility model.

[0019] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0020] Figure 4 This is a schematic diagram of the structure of the support plate of this utility model.

[0021] Figure 5 This is a schematic diagram of the shaping device of this utility model.

[0022] Figure label:

[0023] Metal ring 1;

[0024] Frame 10, channel 11, support sleeve 12, bearing 13, crossbeam 14, base plate 15;

[0025] Shaping device 20, linear guide rail 21, slider 22, support 23, bearing seat 24, mounting base 25, ball screw 26, driver 27, grinding motor 28, grinding wheel 29;

[0026] Support plate 30, notch 31, support shaft 32, stop block 33;

[0027] Clamping device 40, second push rod device 41, clamping member 42;

[0028] Drive unit 50, first push rod device 51, crank arm 52, hinge seat 53, hinge shaft 54. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0030] Example 1:

[0031] Please see Figure 1-5A grinding device for the weld seam of a metal ring in a concrete manhole cover includes a frame 10. A shaping device 20 for grinding the metal ring 1 is mounted on the frame 10. The grinding wheel 29 of the shaping device 20 extends from a channel 11 at the top of the frame 10. A clamping device 40 for clamping the metal ring 1 is also mounted on the top of the frame 10. A support plate 30 is rotatably mounted on the top of the frame 10. The support plate 30 is connected to a drive device 50 mounted on the frame 10 to drive the support plate 30 to reciprocate. The clamping device 40 is mounted on the support plate 30. A notch 31 is provided on the edge of the support plate 30 at the position corresponding to the grinding wheel 29. The grinding wheel 29 is located in the notch 31.

[0032] The drive device 50 drives the support plate 30 to reciprocate, and the clamping device 40 clamps the metal ring 1. When the support plate 30 drives the metal ring 1 to rotate, the shaping device 20 is activated. The weld of the metal ring 1 rotates through the grinding wheel 29 of the shaping device 20 to grind the weld. When placing the metal ring 1, see [reference needed]. Figure 3 The weld of metal ring 1 can be placed within the fan-shaped area of ​​notch 31, making the placement of metal ring 1 more convenient and flexible.

[0033] In this embodiment, see Figure 1 , 2 In accordance with CN213004296U, during use, the metal ring 1 is first placed on the support plate 30, and the clamping device 40 clamps and positions the metal ring 1. When placing the metal ring 1, the weld seam of the metal ring 1 can be placed within the fan-shaped area of ​​the notch 31. The distance between the two grinding wheels 29 on the shaping device 20 is adjusted so that the two grinding wheels 29 are close to the metal ring 1. The drive device 50 is started, and at the same time, the shaping device 20 is also started, driving the grinding wheels 29 to rotate. As the support plate 30 drives the metal ring 1 to rotate, the weld seam of the metal ring 1 rotates through the grinding wheels 29 of the shaping device 20, thereby grinding the weld bead on the protruding part of the weld seam. After the support plate 30 rotates a certain angle, the drive device 50 drives the support plate 30 to rotate back to its original position. During the rotation and reset process, another grinding is performed, thus completing one cycle of grinding. Depending on the actual grinding effect, the cycle can be repeated multiple times.

[0034] In this embodiment, see Figure 2 , 4 The notch 31 is an umbrella-shaped notch. In practical applications, the size of the notch 31 can be adjusted to limit the rotation angle of the support plate 30. The smaller the angle, the smaller the area where the weld can be placed on the metal ring 1, but the efficiency of grinding can be improved.

[0035] In this embodiment, the drive device 50 is a motor, which is mounted on the lower side of the top surface of the frame 10. The output shaft of the motor extends upward from the top surface of the frame 10, and the support plate 30 is fixedly mounted on the output shaft of the motor. By controlling the forward and reverse rotation of the motor, the support plate 30 is controlled to reciprocate.

[0036] Example 2:

[0037] In this embodiment, see Figure 1 A support shaft 32 is fixedly connected to the center of the bottom of the support plate 30. The support shaft 32 is rotatably connected to the frame 10 via a bearing 13. See also Figure 3 The drive device 50 includes a first push rod device 51 and a crank arm 52. One end of the crank arm 52 is fixedly connected to the support shaft 32, and the other end is hinged to one end of the first push rod device 51. The other end of the first push rod device 51 is hinged to the frame 10.

[0038] Specifically, the first push rod device 51 adopts a cylinder or electric push rod. The fixed end of the first push rod device 51 is hinged to the frame 10 through a hinge seat 53, which is a CB type double-ear seat. The telescopic end of the first push rod device 51 is equipped with a fisheye connector, which is hinged to the crank arm 52 through a hinge shaft 54.

[0039] The extension and retraction of the first push rod device 51 drives the support plate 30 to rotate back and forth at a certain angle.

[0040] Further, see Figure 1 A support sleeve 12 is fixedly installed on the top of the frame 10, and a bearing 13 is installed inside the support sleeve 12. The support shaft 32 passes through the bearing 13 inside the support sleeve 12. This structure improves the stability of the support plate 30.

[0041] Example 3:

[0042] Based on Example 1 or Example 2, see Figure 1 , 2 4. The clamping device 40 includes at least two second push rod devices 41, which are evenly distributed in a ring on the support plate 30. The telescopic ends of the second push rod devices 41 face the center of the support plate 30, and clamping members 42 are installed on the telescopic ends of the second push rod devices 41.

[0043] In this embodiment, the second push rod device 41 is a pneumatic cylinder or an electric cylinder. When the telescopic ends of each second push rod device 41 extend synchronously, the metal ring 1 is clamped and positioned.

[0044] In this embodiment, three second push rod devices 41 are provided, and the clamping member 42 is a clamping block or an arc-shaped plate. Of course, depending on the needs, there can also be two, four, or five second push rod devices 41.

[0045] Furthermore, a stop 33 is welded and installed on the support plate 30 at the position corresponding to the second push rod device 41, and the second push rod device 41 is installed on the stop 33.

[0046] Example 4:

[0047] Based on Example 1, Example 2, or Example 3, see [link to example]. Figure 1 , 5 The shaping device 20 includes linear guide rails 21, sliders 22, supports 23, bearing seats 24, mounting bases 25, ball screws 26, drivers 27, and grinding motors 28. Two linear guide rails 21 are mounted parallel to each other on the base plate 15. Slider 22 is mounted on the linear guide rails 21. Supports 23 are mounted on sliders 22. Grinding motors 28 are mounted on supports 23. The output shaft of grinding motors 28 extends upward through channel 11. Grinding wheels 29 for grinding are mounted on the output shaft of grinding motors 28. Bearing seats 24 are mounted on one end of the upper side of the base plate 15, and mounting bases 25 are fixedly mounted on the other end. Drivers 27 are mounted on mounting bases 25. One end of ball screw 26 is rotatably connected to bearing seats 24, and the other end is connected to the output shaft of drivers 27 through a coupling. A screw nut is mounted on the bottom of the support 23, and the screw nut is threadedly engaged with ball screw 26.

[0048] The drive 27 drives the ball screw 26 to rotate. Since the bottom of the support 23 is fixedly installed with a screw nut, and the screw nut is threadedly connected to the ball screw 26, when the ball screw 26 rotates, it drives the support 23 to move along the linear guide 21.

[0049] In this embodiment, two linear guide rails 21 are mounted on a support 23 via a slider 22. A grinding motor 28 is mounted on the support 23, and a grinding wheel 29 is mounted on the output shaft of the grinding motor 28. In use, the grinding wheel 29 is located on the outside of the metal ring 1 and only grinds the weld seam on the outside of the metal ring 1.

[0050] In this embodiment, the grinding wheel 29 is a grinding wheel. The driver 27 is a stepper motor or a servo motor.

[0051] In use, after placing the metal ring 1 on the support plate 30, the clamping device 40 positions the metal ring 1, and the driver 27 drives the ball screw 26 to rotate, bringing the grinding wheel 29 closer to the metal ring 1. Then, the grinding motor 28 starts, and the drive device 50 starts simultaneously, thereby grinding the weld beads on the outer weld seam of the metal ring 1. After grinding, the driver 27 drives the ball screw 26 to reverse, moving the grinding wheel 29 away from the metal ring, facilitating the removal and repositioning of the metal ring 1.

[0052] See Figure 1 A crossbeam 14 is welded inside the frame 10, and a base plate 15 is installed on the crossbeam 14.

[0053] Example 5:

[0054] Based on Example 4, see Figure 1 , 5 Two supports 23 are mounted on the two linear guide rails 21 via sliders 22. The ball screw 26 is a forward and reverse threaded screw. When the ball screw 26 rotates, the two supports 23 move synchronously towards or away from each other. With the above structure, the weld seams on both the inner and outer sides of the metal ring 1 can be ground.

[0055] The working principle or operation process of this utility model is as follows:

[0056] When using, Figure 2 The support plate 30 shown is in its initial state. After the metal ring 1 is placed on the support plate 30, the metal ring 1 is positioned by the clamping device 40.

[0057] The driver 27 drives the ball screw 26 to rotate, bringing the inner and outer grinding wheels 29 closer to the metal ring 1. Then, the grinding motor 28 starts, the first push rod device 51 extends and retracts once or multiple times, and the support plate 30 rotates reciprocally, allowing the weld seam to enter between the inner and outer grinding wheels 29, thereby grinding the weld beads on the inner and outer sides of the metal ring 1. After grinding, the driver 27 drives the ball screw 26 to reverse, moving the grinding wheels 29 away from the metal ring, releasing the clamping device 40, and removing the metal ring 1.

Claims

1. A welding seam polishing device for a metal ring of a concrete well lid, comprising a frame (10), a shaping device (20) for polishing the metal ring (1) is installed on the frame (10), a grinding wheel (29) of the shaping device (20) extends out of a passage (11) on the top of the frame (10), and a clamping device (40) for clamping the metal ring (1) is also installed on the top of the frame (10), characterized in that: The top of the frame (10) is rotatably provided with a support disc (30), which is in transmission connection with a driving device (50) installed on the frame (10) to drive the support disc (30) to rotate back and forth, and the clamping device (40) is installed on the support disc (30); the edge of the support disc (30) is provided with a notch (31) at the position corresponding to the grinding wheel (29).

2. The weld grinding device for metal rings of concrete manhole covers according to claim 1, characterized in that: The driving device (50) is a motor, which is installed on the lower side of the top surface of the frame (10), and the output shaft of the motor extends upwardly out of the top surface of the frame (10), and the support disc (30) is fixedly installed on the output shaft of the motor.

3. The weld grinding device for metal rings of concrete manhole covers according to claim 1, characterized in that: The bottom center of the support disc (30) is fixedly connected with a support shaft (32), which is rotatably connected with the frame (10) through a bearing (13); the driving device (50) comprises a first push rod device (51) and a crank arm (52), one end of the crank arm (52) is fixedly connected with the support shaft (32), the other end is hingedly connected with one end of the first push rod device (51), and the other end of the first push rod device is hingedly connected with the frame (10).

4. The weld grinding device for metal rings of concrete manhole covers according to claim 3, characterized in that: The top of the frame (10) is fixedly provided with a support sleeve (12), and the bearing (13) is installed in the support sleeve (12).

5. The weld polishing apparatus for a metal collar of a concrete well lid according to claim 1, characterized by: The clamping device (40) comprises at least two second push rod devices (41), which are annularly and uniformly installed on the support disc (30), the telescopic end of the second push rod device (41) faces the center of the support disc (30), and the clamping piece (42) is installed at the telescopic end of the second push rod device (41).

6. The weld grinding device for metal rings of concrete manhole covers according to claim 5, characterized in that: The clamping piece (42) is a clamping block or an arc-shaped plate.

7. The weld grinding device for metal rings of concrete manhole covers according to claim 5, characterized in that: The support disc (30) is provided with a stop block (33) at the position corresponding to the second push rod device (41), and the second push rod device (41) is installed on the stop block (33).

8. The weld polishing apparatus for a metal collar of a concrete well lid according to claim 1, characterized by: The shaping device (20) comprises linear guides (21), sliding blocks (22), supports (23), bearing seats (24), mounting seats (25), ball screws (26), drives (27) and grinding motors (28), two linear guides (21) are installed in parallel on the bottom plate (15), the sliding blocks (22) are installed on the linear guides (21), the supports (23) are installed on the sliding blocks (22), the grinding motors (28) are installed on the supports (23), the output shafts of the grinding motors (28) extend upwardly out of the channel (11), the grinding wheels (29) for grinding are installed on the output shafts of the grinding motors (28), the bearing seats (24) are installed at one end of the upper side of the bottom plate (15), the mounting seats (25) are fixedly installed at the other end, the drives (27) are installed on the mounting seats (25), one end of the ball screw (26) is rotatably connected with the bearing seat (24), and the other end is connected with the output shaft of the drive (27) through a shaft coupling; the bottom of the support (23) is provided with a screw nut, which is threadedly connected with the ball screw (26).

9. The weld grinding device for metal rings of concrete manhole covers according to claim 8, characterized in that: Two said linear guide (21) respectively through the slider (22) is provided with two supports (23), the ball screw (26) is positive and negative tooth screw, when the ball screw (26) rotates, two supports (23) synchronous or back to the movement of the mobile.

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