Polishing device for inner wall of nodular cast iron pipe

Abstract

The utility model provides a nodular cast iron pipe inner wall polishing device which comprises a first installation frame and a second installation frame which are installed at the two ends of a nodular cast iron pipe respectively, a first rotating shaft is installed in the first installation frame, a second rotating shaft is installed in the second installation frame, and a plurality of third rotating shafts are installed between the first rotating shaft and the second rotating shaft. First telescopic rods are fixed to the first rotating shaft, the second rotating shaft and the third rotating shaft correspondingly, and grinding blocks are fixed to one ends of the first telescopic rods and make contact with the inner wall of the nodular cast iron pipe. According to the utility model, the first rotating shaft is arranged in the first mounting rack, the second rotating shaft is arranged in the second mounting rack, and the third rotating shaft is arranged between the first rotating shaft and the second rotating shaft, so that the device can be clamped and fixed on the nodular cast iron pipe through the first mounting rack and the second mounting rack; the overall length of the device can be freely changed by adjusting the number of the third rotating shafts, so that the device is suitable for nodular cast iron pipes of various sizes, and the overall cost of the device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding devices, in particular to a grinding device for the inner wall of a ductile iron pipe. Background Art

[0002] Ductile iron pipes are widely used in construction, machinery and other fields. During the production process, steel pipes are often cut or welded, which may cause varying degrees of sand, iron and burrs, which is not conducive to the use of ductile iron pipes. Therefore, the inner wall of the pipe body needs to be polished. For example, the patent with publication number CN218110191U discloses a device for grinding the inner wall of a ductile iron pipe fitting, including a fixed slide rail, a grinding mechanism is provided on the left side of the fixed slide rail, and a support frame is provided on the right side of the fixed slide rail, a support block is rotatably provided on the upper end of the support frame, and a power mechanism for driving the support block to rotate is installed on the support frame, the surface of the fixed slide rail is inclined downward from left to right, so that the right end of the ductile iron pipe placed on the surface of the support block is lower than the left end, and a limiting mechanism is provided on the support frame. The device supports the ductile iron pipe by means of a fixed slide rail, a support frame and a support block. For some longer and larger ductile iron pipes, in order to match the length of the ductile iron pipe, it is inevitable that the overall cost of the device will increase, thereby resulting in a higher grinding cost, which affects the scope of application of the device.

[0003] To this end, the utility model provides a ductile iron pipe inner wall grinding device. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a device for grinding the inner wall of a ductile iron pipe to solve the problems raised in the above-mentioned background technology. The utility model can clamp and fix the device on the ductile iron pipe, and can change the overall length of the device at will, so that the device is suitable for ductile iron pipes of various sizes, reducing the overall cost of the device and expanding the scope of application of the device.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a ductile iron pipe inner wall grinding device, comprising a first mounting frame and a second mounting frame respectively mounted on both ends of the ductile iron pipe, a first rotating shaft is mounted in the first mounting frame, a second rotating shaft is mounted in the second mounting frame, a plurality of third rotating shafts are mounted between the first rotating shaft and the second rotating shaft, a first telescopic rod is fixed on the first rotating shaft, the second rotating shaft and the third rotating shaft, a grinding block is fixed on one end of the first telescopic rod, and the grinding block contacts the inner wall of the ductile iron pipe.

[0006] Furthermore, a plurality of second telescopic rods are fixed on both the first mounting frame and the second mounting frame, and a clamping plate is fixed on one end of the second telescopic rods.

[0007] Furthermore, a motor is fixed to one side of the second mounting frame, an insert block is fixed to the output end of the motor, and a slot is provided in the second rotating shaft, and the slot corresponds to the insert block.

[0008] Furthermore, the insert block is a square block, the slot is a square slot, and a limiting plate is fixed to one end of the second rotating shaft.

[0009] Furthermore, a first rotating groove is provided in the first mounting frame, and the first rotating groove corresponds to the first rotating shaft. A second rotating groove is provided in the second mounting frame, and the second rotating groove corresponds to the second rotating shaft.

[0010] Furthermore, the first rotating shaft, the second rotating shaft and the third rotating shaft are all located in the ductile iron pipe, and the first rotating shaft and the third rotating shaft, the second rotating shaft and the third rotating shaft, and two adjacent third rotating shafts are all fixedly connected by bolts.

[0011] Beneficial effects of the utility model: The utility model provides a ductile iron pipe inner wall grinding device, comprising a first mounting frame; a first rotating shaft; a second mounting frame; a second rotating shaft; a third rotating shaft; and a ductile iron pipe.

[0012] A first rotating shaft is installed in the first mounting frame, a second rotating shaft is installed in the second mounting frame, and a third rotating shaft is installed between the first rotating shaft and the second rotating shaft. The device can be clamped and fixed on the ductile iron pipe by the first mounting frame and the second mounting frame. The overall length of the device can be changed at will by adjusting the number of the third rotating shaft, so that the device is suitable for ductile iron pipes of various sizes, reducing the overall cost of the device and expanding the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the assembled three-dimensional structure of a ductile iron pipe inner wall grinding device as a whole and a ductile iron pipe according to the utility model;

[0014] Figure 2 It is a schematic diagram of the assembly cross-sectional structure of a ductile iron pipe inner wall grinding device as a whole and a ductile iron pipe according to the utility model;

[0015] Figure 3 It is an exploded view of the whole device for grinding the inner wall of a ductile iron pipe according to the utility model;

[0016] Figure 4 It is a schematic diagram of the overall assembly three-dimensional structure of a ductile iron pipe inner wall grinding device of the utility model;

[0017] In the figure: 1, ductile iron pipe; 2, first mounting frame; 3, second mounting frame; 4, first telescopic rod; 5, second telescopic rod; 6, clamping plate; 7, first rotating shaft; 8, second rotating shaft; 9, third rotating shaft; 10, grinding block; 11, slot; 12, plug block; 13, motor; 14, limit plate. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figures 1 to 4 The utility model provides a technical solution: a ductile iron pipe inner wall grinding device, comprising a first mounting frame 2 and a second mounting frame 3 respectively mounted on both ends of the ductile iron pipe 1, a first rotating shaft 7 is mounted in the first mounting frame 2, a second rotating shaft 8 is mounted in the second mounting frame 3, a plurality of third rotating shafts 9 are mounted between the first rotating shaft 7 and the second rotating shaft 8, a first telescopic rod 4 is fixed on the first rotating shaft 7, the second rotating shaft 8 and the third rotating shaft 9, a grinding block 10 is fixed on one end of the first telescopic rod 4, and the grinding block 10 is in contact with the inner wall of the ductile iron pipe 1.

[0020] In this embodiment, a plurality of second telescopic rods 5 are fixed on both the first mounting frame 2 and the second mounting frame 3, a clamping plate 6 is fixed at one end of the second telescopic rod 5, a motor 13 is fixed at one side of the second mounting frame 3, an insert block 12 is fixed at the output end of the motor 13, a slot 11 is provided in the second rotating shaft 8, the slot 11 corresponds to the insert block 12, the insert block 12 is a square block, the slot 11 is a square slot, a limiting plate 14 is fixed at one end of the second rotating shaft 8, a first rotating groove is provided in the first mounting frame 2, the first rotating groove corresponds to the first rotating shaft 7, a second rotating groove is provided in the second mounting frame 3, the second rotating groove corresponds to the second rotating shaft 8.

[0021] Specifically, when it is necessary to grind the inner wall of the ductile iron pipe 1, the second telescopic rod 5 is lengthened so that the second telescopic rod 5 drives the clamping plate 6 to move, thereby controlling the multiple clamping plates 6 to be clamped on the peripheral side of the ductile iron pipe 1, and then the length of the second telescopic rod 5 is fixed, and the motor 13 is started. The first rotating shaft 7, the second rotating shaft 8 and the third rotating shaft 9 can be driven by the motor 13 to rotate, thereby driving the grinding block 10 to rotate in the ductile iron pipe 1, so that the inside of the ductile iron pipe 1 can be grinded, and the position of the grinding block 10 can be changed by pulling the first rotating shaft 7, the second rotating shaft 8 and the third rotating shaft 9, and the limiting plate 14 limits the second rotating shaft 8, so that various places inside the ductile iron pipe 1 can be grinded to prevent dead angles and ensure the grinding effect.

[0022] The first rotating shaft 7, the second rotating shaft 8 and the third rotating shaft 9 are all located in the ductile iron pipe 1, and the first rotating shaft 7 and the third rotating shaft 9, the second rotating shaft 8 and the third rotating shaft 9, and two adjacent third rotating shafts 9 are all fixedly connected by bolts.

[0023] Specifically, when it is necessary to change the overall length of the device, the number of third rotating shafts 9 can be added as needed, the third rotating shafts 9 can be fixed by bolts, and then the length of the first telescopic rod 4 can be adjusted so that the grinding block 10 can contact the inner wall of the ductile iron pipe 1, so that the device is the same length as the ductile iron pipe 1, so that the inner wall of the ductile iron pipe 1 can be better ground.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A ductile iron pipe inner wall grinding device, comprising a first mounting frame (2) and a second mounting frame (3) respectively mounted at two ends of a ductile iron pipe (1), characterized in that: A first rotating shaft (7) is installed in the first mounting frame (2), a second rotating shaft (8) is installed in the second mounting frame (3), a plurality of third rotating shafts (9) are installed between the first rotating shaft (7) and the second rotating shaft (8), a first telescopic rod (4) is fixed on the first rotating shaft (7), the second rotating shaft (8) and the third rotating shaft (9), a grinding block (10) is fixed on one end of the first telescopic rod (4), and the grinding block (10) is in contact with the inner wall of the ductile iron pipe (1).

2. A ductile iron pipe inner wall grinding device according to claim 1, characterized in that: A plurality of second telescopic rods (5) are fixed on both the first mounting frame (2) and the second mounting frame (3), and a clamping plate (6) is fixed on one end of the second telescopic rod (5).

3. The device for grinding the inner wall of a ductile iron pipe according to claim 1, characterized in that: A motor (13) is fixed to one side of the second mounting frame (3), an insert block (12) is fixed to the output end of the motor (13), a slot (11) is provided in the second rotating shaft (8), and the slot (11) corresponds to the insert block (12).

4. A ductile iron pipe inner wall grinding device according to claim 3, characterized in that: The insert block (12) is a square block, the slot (11) is a square slot, and a limiting plate (14) is fixed to one end of the second rotating shaft (8).

5. The device for grinding the inner wall of a ductile iron pipe according to claim 1, characterized in that: A first rotating groove is provided in the first mounting frame (2), and the first rotating groove corresponds to the first rotating shaft (7); a second rotating groove is provided in the second mounting frame (3), and the second rotating groove corresponds to the second rotating shaft (8).

6. The device for grinding the inner wall of a ductile iron pipe according to claim 1, characterized in that: The first rotating shaft (7), the second rotating shaft (8) and the third rotating shaft (9) are all located in the ductile iron pipe (1); the first rotating shaft (7) and the third rotating shaft (9), the second rotating shaft (8) and the third rotating shaft (9), and two adjacent third rotating shafts (9) are all fixedly connected by bolts.

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