A ductile cast iron pipe equidistance automatic cutting machine

By combining an automatic feeding mechanism and an equidistant cutting limiting mechanism, the problems of automatic feeding and equidistant cutting of ductile iron pipes are solved, achieving rapid and stable movement and precise equidistant cutting, thus improving cutting efficiency and accuracy.

CN224333679UActive Publication Date: 2026-06-09ANGANG GRP YONGTONG DUCTILE CAST IRON PIPE CO LTD +3

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANGANG GRP YONGTONG DUCTILE CAST IRON PIPE CO LTD
Filing Date
2025-03-11
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies cannot achieve automatic feeding and equidistant cutting of ductile iron pipes, resulting in low cutting efficiency and poor precision, which affects the uniformity of cutting.

Method used

By employing an automatic feeding mechanism and an equidistant cutting limiting mechanism, and through the combination of an internal rotating laser cutting box, a cutting purifier, an automatic feeding mechanism, and an equidistant cutting limiting mechanism, the ductile iron pipe can be moved quickly and cut precisely at equal intervals.

Benefits of technology

This technology enables rapid and stable movement and precise equidistant cutting of ductile iron pipes, improving cutting efficiency and accuracy and preventing pipe detachment.

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Abstract

The utility model relates to nodular cast iron pipe cutting technical field especially relates to a kind of nodular cast iron pipe equidistance automatic cutting machine, including inner rotary laser cutting box, the upper end middle part of the inner rotary laser cutting box is fixedly connected with cutting purifier, the side of the inner rotary laser cutting box is detachably connected with cutting automatic feeding mechanism, the other side of the inner rotary laser cutting box is detachably connected with equidistance cutting limiting mechanism, the utility model can be completed to nodular cast iron pipe by cutting automatic feeding mechanism and equidistance cutting limiting mechanism, and the stability of nodular cast iron pipe is improved when moving, and the situation that iron pipe is avoided to separate from simultaneously avoiding the situation that iron pipe is avoided to separate from, and in use, different cutting distance can be accurately controlled, and the equidistance accuracy of cutting is guaranteed.
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Description

Technical Field

[0001] This utility model relates to the field of ductile iron pipe cutting, and in particular to an automatic equidistant cutting machine for ductile iron pipes. Background Technology

[0002] Ductile iron pipe is a type of pipe made by adding a spheroidizing agent to molten iron and then using a centrifugal casting process. In order to meet the needs of different applications, ductile iron pipes need to be cut. To ensure the uniformity of cutting multiple sets of ductile iron pipes, they need to be cut at equal intervals.

[0003] However, existing technologies cannot automate the feeding of ductile iron pipes. Manual movement is required during use, which is time-consuming, labor-intensive, and has low feeding efficiency. Furthermore, existing ductile iron pipes cannot precisely control the cutting position during equidistant cutting, resulting in poor cutting accuracy and affecting the uniformity of the cutting.

[0004] In view of this, this paper studies and improves upon existing problems, providing an automatic equidistant cutting machine for ductile iron pipes. Firstly, it can rapidly move the ductile iron pipe while ensuring its stability during movement, thus improving efficiency and preventing pipe detachment. Secondly, it allows for precise control of different cutting distances, ensuring equidistant cutting accuracy. The aim of this technology is to solve problems and enhance practical value. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic equidistant cutting machine for ductile iron pipes. This invention, through an automatic feeding mechanism and an equidistant cutting limiting mechanism, enables rapid movement of ductile iron pipes while ensuring their stability during movement. This improves movement efficiency and prevents pipe detachment. Furthermore, it allows for precise control of different cutting distances, ensuring accurate equidistant cutting. The aim of this technology is to solve problems and enhance practical value.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: it includes an inner rotating laser cutting box, a cutting purifier is fixedly connected to the upper middle part of the inner rotating laser cutting box, an automatic cutting feeding mechanism is detachably connected to one side of the inner rotating laser cutting box, and an equidistant cutting limiting mechanism is detachably connected to the other side of the inner rotating laser cutting box.

[0007] The automatic cutting and feeding mechanism includes a feeding support base plate. A left feeding drive bracket is fixedly connected to one side of the feeding support base plate, and a right feeding bracket is fixedly connected to the other side of the feeding support base plate. A feeding rotating bracket is fixedly connected to the upper end of both the left feeding drive bracket and the right feeding bracket. A feeding moving wheel is movably connected to the middle of the feeding rotating bracket. Threaded feeding rods are movably connected to the inner surfaces of both sides of the feeding support base plate. An internally threaded feeding sliding plate is movably connected to the upper end of the feeding support base plate. An arc-shaped clamping base and a hydraulic support rod are fixedly connected to the upper end of the internally threaded feeding sliding plate. A rotary motor is detachably connected to the middle of the upper end of the top arc-shaped clamping base.

[0008] The equidistant cutting limiting mechanism includes an equidistant support base plate. A left unloading drive bracket is fixedly connected to one side of the equidistant support base plate, and a right unloading bracket is fixedly connected to the other side of the equidistant support base plate. Unloading rotating brackets are fixedly connected to the upper ends of both the left and right unloading drive brackets. Unloading clamping wheels are movably connected to the middle of the unloading rotating brackets. Threaded equidistant limiting rods are movably connected to the inner surfaces of both sides of the equidistant support base plate. An internally threaded equidistant adjusting base is movably connected to the outer surface of the upper end of the equidistant support base plate. A pressure sensor and a distance sensor are fixedly connected to the middle of the upper end of the internally threaded equidistant adjusting base plate. Electric rotating pads are movably connected to the inner surfaces of both ends of the internally threaded equidistant adjusting base plate. A pressure detection plate is detachably connected to one side of the electric rotating pad plate.

[0009] Preferably, the threaded feeding rod passes through the internal threaded feeding sliding plate and is movably connected to the middle of both sides of the feeding support base plate, and the middle of the internal threaded feeding sliding plate is movably connected to the outer wall of the threaded feeding rod through thread engagement.

[0010] Preferably, the threaded equidistant limiting rod passes through the internal threaded equidistant adjusting base and is movably connected to the middle of both sides of the equidistant supporting base plate, and the middle of the internal threaded equidistant adjusting base and the outer wall of the threaded equidistant limiting rod are movably connected by threaded engagement.

[0011] Preferably, a rotary drive motor is provided between the internal thread equidistant adjustment base and the electric rotating pad. The inner surfaces of both ends of the internal thread equidistant adjustment base are movably connected to the outer surfaces of both ends of the electric rotating pad through the rotary drive motor. The lower outer surface of the pressure detection plate is movably connected to the lower inner surface of the internal thread equidistant adjustment base.

[0012] Preferably, a rotating connecting plate is provided between the top arc-shaped clamping seat and the hydraulic support rod. The lower outer surface of the top arc-shaped clamping seat is detachably connected to the outer surface of one end of the hydraulic support rod through the rotating connecting plate. The lower outer surface of the top arc-shaped clamping seat is movably connected to the upper outer surface of the rotating connecting plate.

[0013] Preferably, a feeding drive motor is provided in the middle of the left feeding drive bracket, and the feeding drive motor is detachably connected to the middle of one end of the threaded feeding rod.

[0014] Preferably, the left unloading drive bracket is provided with an adjustable distance drive motor in the middle, and the adjustable distance drive motor is detachably connected to the middle of one end of the threaded equidistant limiting rod.

[0015] This utility model has the following beneficial effects:

[0016] In this utility model, an automatic equidistant cutting machine for ductile iron pipes is supported by a feeding moving wheel. After support is completed, the threaded feeding rod of the feeding support base plate is driven by the left feeding drive bracket. After the threaded feeding rod rotates, it engages with the internal threaded feeding sliding plate, moving it to one side of the right feeding bracket. After movement, a rotary motor rotates the top arc-shaped clamping seat to be perpendicular to the arc-shaped clamping base. After perpendicularity, a hydraulic support rod on one side of the arc-shaped clamping base moves the top arc-shaped clamping seat downward to complete the clamping of the ductile iron pipe. After clamping, the left feeding drive bracket reverses the driving action of the threaded feeding rod of the feeding support base plate, moving the internal threaded feeding sliding plate towards the left feeding drive bracket. When the left feeding drive bracket moves, the top arc-shaped clamping seat and the arc-shaped clamping base clamp the ductile iron pipe for movement. In use, this completes the cutting of... The ductile iron pipe is moved quickly, ensuring its stability during movement and improving efficiency while preventing pipe detachment. During equidistant cutting, the left-side unloading drive bracket first rotates the threaded equidistant limiting rod in the middle of the equidistant support base plate. The threaded equidistant limiting rod engages with the internal threaded equidistant adjusting base. Depending on the equidistant cutting length, the internal threaded equidistant adjusting base is moved to the left or right. After moving the internal threaded equidistant adjusting base to the designated position, the electric rotating pad on the internal threaded equidistant adjusting base rotates, achieving vertical erection. The ductile iron pipe then moves onto the electric rotating pad, where a pressure detection plate performs contact detection and limiting. After detecting that the ductile iron pipe has moved to the designated position, the feeding support base plate stops feeding, and the automatic cutting feeding mechanism completes the automatic cutting of the ductile iron pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an automatic equidistant cutting machine for ductile iron pipes proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the automatic feeding mechanism 2 for an equidistant automatic cutting machine for ductile iron pipes proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the unfolded structure of the equidistant cutting restriction mechanism 3 of the equidistant automatic cutting machine for ductile iron pipes proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the closed structure of the equidistant cutting limiting mechanism 3 of the equidistant automatic cutting machine for ductile iron pipes proposed in this utility model.

[0021] Legend:

[0022] 1. Internal rotating laser cutting box; 2. Cutting purifier; 3. Automatic cutting feeding mechanism; 4. Equidistant cutting limiting mechanism; 301. Feeding support base plate; 302. Left feeding drive bracket; 303. Right feeding bracket; 304. Feeding moving wheel; 305. Feeding rotating bracket; 306. Threaded feeding rod; 307. Internal threaded feeding sliding plate; 308. Arc-shaped clamping base; 309. Hydraulic support rod; 310. Top arc-shaped clamping seat; 311. Rotary motor; 401. Equidistant support base plate; 402. Left unloading drive bracket; 403. Right unloading bracket; 404. Unloading rotating bracket; 405. Unloading clamping wheel; 406. Internal threaded equidistant adjusting base; 407. Pressure sensor; 408. Distance sensor; 409. Electric rotating pad; 410. Pressure detection plate; 411. Threaded equidistant limiting rod. Detailed Implementation

[0023] 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.

[0024] Reference Figure 1-4 An automatic equidistant cutting machine for ductile iron pipes includes an inner rotating laser cutting box 1, a cutting purifier 2 fixedly connected to the upper middle part of the inner rotating laser cutting box 1, an automatic cutting feeding mechanism 3 detachably connected to one side of the inner rotating laser cutting box 1, and an equidistant cutting limiting mechanism 4 detachably connected to the other side of the inner rotating laser cutting box 1.

[0025] The automatic cutting feeding mechanism 3 includes a feeding support base plate 301. A left feeding drive bracket 302 is fixedly connected to one side of the feeding support base plate 301, and a right feeding bracket 303 is fixedly connected to the other side of the feeding support base plate 301. Feeding rotating brackets 305 are fixedly connected to the upper ends of both the left feeding drive bracket 302 and the right feeding bracket 303. A feeding moving wheel 304 is movably connected to the middle of the feeding rotating bracket 305. Threaded feeding rods 306 are movably connected to the inner surfaces of both sides of the feeding support base plate 301. The upper end of plate 301 is movably connected to an internally threaded feeding sliding plate 307. The upper end of the internally threaded feeding sliding plate 307 is fixedly connected to an arc-shaped clamping base 308 and a hydraulic support rod 309. A rotary motor 311 is detachably connected to the upper center of the top arc-shaped clamping base 310. First, the ductile iron pipe to be cut is placed on the feeding moving wheels 304 of the left feeding drive bracket 302 and the right feeding bracket 303 feeding rotary bracket 305. The feeding moving wheels 304 support the pipe. After support is completed, the pipe passes through the left side... The material drive bracket 302 drives the threaded feeding rod 306 of the feeding support base plate 301. After the threaded feeding rod 306 rotates, it engages with the internal threaded feeding sliding plate 307, moving it to one side of the right feeding bracket 303. After moving, the rotary motor 311 rotates the top arc-shaped clamping seat 310 to be perpendicular to the arc-shaped clamping base 308. After being perpendicular, the hydraulic support rod 309 on one side of the arc-shaped clamping base 308 moves the top arc-shaped clamping seat 310 down to complete the clamping of the ductile iron pipe. After clamping is completed... The left-side feeding drive bracket 302 drives the threaded feeding rod 306 of the feeding support base plate 301 in the opposite direction, moving the internal threaded feeding sliding plate 307 towards the left-side feeding drive bracket 302. When the left-side feeding drive bracket 302 moves, the ductile iron pipe is clamped by the top arc-shaped clamping seat 310 and the arc-shaped clamping base 308. In use, this allows for rapid movement of the ductile iron pipe, ensuring its stability during movement, improving movement efficiency, and preventing the pipe from detaching.

[0026] The equidistant cutting limiting mechanism 4 includes an equidistant support base plate 401. A left unloading drive bracket 402 is fixedly connected to one side of the equidistant support base plate 401, and a right unloading bracket 403 is fixedly connected to the other side of the equidistant support base plate 401. Unloading rotating brackets 404 are fixedly connected to the upper ends of both the left unloading drive bracket 402 and the right unloading bracket 403. Unloading clamping wheels 405 are movably connected to the middle of the unloading rotating bracket 404. Threaded equidistant limiting rods 411 are movably connected to the inner surfaces of both sides of the equidistant support base plate 401. An internally threaded equidistant adjusting base 406 is movably connected to the outer surface of the upper end of the equidistant support base plate 401. A pressure sensor 407 and a distance sensor 408 are fixedly connected to the middle of the upper end of the internally threaded equidistant adjusting base 406. Electric rotating pads 409 are movably connected to the inner surfaces of both ends of the internally threaded equidistant adjusting base 406. One side of the electric rotating pad 409 is detachably connected to... With the pressure detection plate 410 connected, during equidistant cutting, the left unloading drive bracket 402 first drives the threaded equidistant limiting rod 411 in the middle of the equidistant support base plate 401 to rotate. The threaded equidistant limiting rod 411 engages with the internal threaded equidistant adjusting base 406. According to the equidistant cutting length, the internal threaded equidistant adjusting base 406 is moved to the left or right. After the internal threaded equidistant adjusting base 406 is moved to the designated position, the electric rotating pad 409 on the internal threaded equidistant adjusting base 406 rotates. The electric rotating pad 409 achieves vertical standing. Then, after the ductile iron pipe moves onto the electric rotating pad 409, the pressure detection plate 410 performs contact detection and limiting work. After detecting that the ductile iron pipe has moved to the designated position, the feeding support base plate 301 is controlled to stop feeding. Then, the automatic cutting feeding mechanism 3 completes the automatic cutting of the ductile iron pipe.

[0027] Specifically, the threaded feeding rod 306 passes through the internal threaded feeding sliding plate 307 and is movably connected to the middle of both sides of the feeding support base plate 301. The middle of the internal threaded feeding sliding plate 307 is movably connected to the outer wall of the threaded feeding rod 306 through threaded engagement. The internal threaded feeding sliding plate 307 and the threaded feeding rod 306 engage with each other to adjust the position of the internal threaded feeding sliding plate 307.

[0028] Specifically, the threaded equidistant limiting rod 411 passes through the internal threaded equidistant adjusting base 406 and is movably connected to the middle of both sides of the equidistant support base plate 401. The middle of the internal threaded equidistant adjusting base 406 and the outer wall of the threaded equidistant limiting rod 411 are movably connected through threaded engagement. The internal threaded equidistant adjusting base 406 and the threaded equidistant limiting rod 411 engage with each other to adjust the position of the internal threaded equidistant adjusting base 406.

[0029] Specifically, a rotary drive motor is provided between the internal thread equidistant adjustment base 406 and the electric rotating pad 409. The inner surfaces of both ends of the internal thread equidistant adjustment base 406 are movably connected to the outer surfaces of both ends of the electric rotating pad 409 through the rotary drive motor. The lower outer surface of the pressure detection plate 410 is movably connected to the lower inner surface of the internal thread equidistant adjustment base 406. The rotary drive motor completes the unfolding and retraction of the electric rotating pad 409 inside the internal thread equidistant adjustment base 406, which facilitates the unloading of ductile iron pipes.

[0030] Specifically, a rotating connecting plate is provided between the top arc-shaped clamping seat 310 and the hydraulic support rod 309. The lower outer surface of the top arc-shaped clamping seat 310 is detachably connected to the outer surface of one end of the hydraulic support rod 309 through the rotating connecting plate. The lower outer surface of the top arc-shaped clamping seat 310 is movably connected to the upper outer surface of the rotating connecting plate. The top arc-shaped clamping seat 310 rotates under the action of the rotating connecting plate. During feeding, the top arc-shaped clamping seat 310 is rotated to the rear to avoid the top arc-shaped clamping seat 310 affecting the feeding of ductile iron pipes.

[0031] Specifically, a feeding drive motor is provided in the middle of the left feeding drive bracket 302. The feeding drive motor is detachably connected to the middle of one end of the threaded feeding rod 306. The feeding drive motor completes the forward and reverse rotation drive of the threaded feeding rod 306.

[0032] Specifically, a pitch-adjustable drive motor is provided in the middle of the left unloading drive bracket 402. The pitch-adjustable drive motor is detachably connected to the middle of one end of the threaded equidistant limit rod 411. The pitch-adjustable drive motor completes the forward and reverse rotation drive of the threaded equidistant limit rod 411.

[0033] Working principle: When equidistant automatic cutting of ductile iron pipes is required, the feeding moving wheel 304 provides support. After support is completed, the threaded feeding rod 306 on the feeding support base plate 301 is driven by the left feeding drive bracket 302. After the threaded feeding rod 306 rotates, it engages with the internal thread feeding sliding plate 307, moving it to one side of the right feeding bracket 303. After movement, the rotary motor 311 rotates the top arc-shaped clamping seat 310 to be perpendicular to the arc-shaped clamping base 308. After vertical alignment, the hydraulic support rod 309 on one side of the arc-shaped clamping base 308 lowers the top arc-shaped clamping seat 310 to complete the clamping of the ductile iron pipe. After clamping, the left-side feeding drive bracket 302 reverses the threaded feeding rod 306 on the feeding support base plate 301, moving the internal threaded feeding sliding plate 307 towards the left-side feeding drive bracket 302. When the left-side feeding drive bracket 302 moves, the top arc-shaped clamping seat 310 and the arc-shaped clamping base 308 clamp the ductile iron pipe for movement. The system is designed for rapid movement of ductile iron pipes, ensuring their stability and improving efficiency while preventing pipe detachment. During equidistant cutting, the left-side unloading drive bracket 402 drives the threaded equidistant limiting rod 411 in the middle of the equidistant support base plate 401 to rotate. The threaded equidistant limiting rod 411 engages with the internal threaded equidistant adjusting base 406. Depending on the equidistant cutting length, the internal threaded equidistant adjusting base 406 is moved to the left or right. The internal thread equidistant adjustment base 406 is moved to the designated position and then the electric rotating pad 409 on the internal thread equidistant adjustment base 406 rotates. The electric rotating pad 409 achieves vertical erection. Then, the ductile iron pipe moves onto the electric rotating pad 409 and is contacted and restricted by the pressure detection plate 410. After the ductile iron pipe is detected to have moved to the designated position, the feeding support base plate 301 is controlled to stop feeding. Then, the automatic cutting feeding mechanism 3 completes the automatic cutting of the ductile iron pipe.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. An automatic equidistant cutting machine for ductile iron pipes, comprising an inner rotating laser cutting box (1), characterized in that: The upper middle part of the inner rotating laser cutting box (1) is fixedly connected to a cutting purifier (2), and one side of the inner rotating laser cutting box (1) is detachably connected to an automatic cutting feeding mechanism (3). The other side of the inner rotating laser cutting box (1) is detachably connected to an equidistant cutting limiting mechanism (4). The automatic cutting and feeding mechanism (3) includes a feeding support base plate (301). A left feeding drive bracket (302) is fixedly connected to one side of the feeding support base plate (301), and a right feeding bracket (303) is fixedly connected to the other side of the feeding support base plate (301). A feeding rotating bracket (305) is fixedly connected to the upper end of both the left feeding drive bracket (302) and the right feeding bracket (303). A feeding moving wheel (304) is movably connected to the middle of the feeding rotating bracket (305). Threaded feeding rods (306) are movably connected to the inner surfaces of both sides of the feeding support base plate (301). An internally threaded feeding sliding plate (307) is movably connected to the upper end of the feeding support base plate (301). An arc-shaped clamping base (308) and a hydraulic support rod (309) are fixedly connected to the upper end of the internally threaded feeding sliding plate (307). A top arc-shaped clamping seat (310) is provided at the upper end of the hydraulic support rod (309). A rotary motor (311) is detachably connected to the middle of the upper end of the top arc-shaped clamping seat (310). The equidistant cutting limiting mechanism (4) includes an equidistant support base plate (401). A left unloading drive bracket (402) is fixedly connected to one side of the equidistant support base plate (401), and a right unloading bracket (403) is fixedly connected to the other side of the equidistant support base plate (401). An unloading rotating bracket (404) is fixedly connected to the upper end of both the left unloading drive bracket (402) and the right unloading bracket (403). An unloading clamping wheel (405) is movably connected to the middle of the unloading rotating bracket (404). The equidistant support base plate (401) Threaded equidistant limiting rods (411) are movably connected to the inner surfaces of both sides of the equidistant support base plate (401). An internal threaded equidistant adjusting base (406) is movably connected to the outer surface of the upper end of the equidistant support base plate (401). A pressure sensor (407) and a distance sensor (408) are fixedly connected to the middle of the upper end of the internal threaded equidistant adjusting base (406). An electric rotating pad (409) is movably connected to the inner surfaces of both ends of the internal threaded equidistant adjusting base (406). A pressure detection plate (410) is detachably connected to one side of the electric rotating pad (409).

2. The equidistant automatic cutting machine for ductile iron pipes according to claim 1, characterized in that: The threaded feeding rod (306) passes through the internal threaded feeding sliding plate (307) and is movably connected to the middle of both sides of the feeding support base plate (301). The middle of the internal threaded feeding sliding plate (307) is movably connected to the outer wall of the threaded feeding rod (306) through thread engagement.

3. The equidistant automatic cutting machine for ductile iron pipes according to claim 1, characterized in that: The threaded equidistant limiting rod (411) passes through the internal threaded equidistant adjusting base (406) and is movably connected to the middle of both sides of the equidistant supporting base plate (401). The middle of the internal threaded equidistant adjusting base (406) and the outer wall of the threaded equidistant limiting rod (411) are movably connected by threaded engagement.

4. The equidistant automatic cutting machine for ductile iron pipes according to claim 1, characterized in that: A rotary drive motor is provided between the internal thread equidistant adjustment base (406) and the electric rotating pad (409). The inner surfaces of both ends of the internal thread equidistant adjustment base (406) are movably connected to the outer surfaces of both ends of the electric rotating pad (409) through the rotary drive motor. The lower outer surface of the pressure detection plate (410) is movably connected to the lower inner surface of the internal thread equidistant adjustment base (406).

5. The equidistant automatic cutting machine for ductile iron pipes according to claim 1, characterized in that: A rotating connecting plate is provided between the top arc-shaped clamping seat (310) and the hydraulic support rod (309). The lower outer surface of the top arc-shaped clamping seat (310) is detachably connected to the outer surface of one end of the hydraulic support rod (309) through the rotating connecting plate. The lower outer surface of the top arc-shaped clamping seat (310) is movably connected to the upper outer surface of the rotating connecting plate.

6. The equidistant automatic cutting machine for ductile iron pipes according to claim 1, characterized in that: A feeding drive motor is provided in the middle of the left feeding drive bracket (302), and the feeding drive motor is detachably connected to the middle of one end of the threaded feeding rod (306).

7. The equidistant automatic cutting machine for ductile iron pipes according to claim 1, characterized in that: The left unloading drive bracket (402) is provided with a pitch adjustment drive motor in the middle, and the pitch adjustment drive motor is detachably connected to the middle of one end of the threaded equidistant limiting rod (411).