Double-end internal grinding machine for nodular cast iron pipe
By designing a double-head internal grinder for ductile iron pipes and adopting a double-head internal grinder structure and PLC controller, the problem of difficult single-head adjustment of existing grinding equipment has been solved, and efficient adaptation to the grinding of different types of cast pipes has been achieved, thereby improving production efficiency and equipment versatility.
Patent Information
- Application Number
- CN202422898622.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing grinding equipment uses a single-headed and fixed-position grinding rod, which is difficult to adjust, has low production efficiency, and cannot adapt to cast pipes of different diameters, lengths and wall thicknesses, resulting in poor versatility.
A double-head internal grinding machine for ductile iron pipes is designed. It adopts a double-head internal grinding machine structure and is equipped with a socket and a socket grinding trolley. The raising and lowering adjustment of the grinding rod is achieved through the adjustment seat and the grinding rod sleeve. Combined with the PLC controller and the limit switch, the automatic grinding operation is realized.
It improves grinding efficiency, adapts to different types of cast pipes, reduces operation difficulty, extends equipment service life, expands the scope of application, and reduces production costs.
Smart Images
Figure CN223455724U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cast pipe production equipment technical field especially relates to a nodular cast iron pipe double -end internal grinding machine. BACKGROUND
[0002] In the production process of nodular cast iron pipe (referred to as cast pipe), the oxide skin existing in the inner wall of cast pipe or the inner wall of cast pipe lining cement needs to be ground. For the grinding process of the inner wall of nodular cast iron pipe, different production manufacturers will need to grind cast pipes of different lengths, different pipe diameters and different inner wall thicknesses based on different use scenarios and production processes and other reasons.
[0003] The existing grinding equipment adopts single head and fixed position grinding rod, and the grinding rod is difficult to adjust, and the single head grinding production efficiency is low. Different grinding rods need to be designed according to the size, length and wall thickness of the cast pipe, and the grinding equipment cannot adapt to cast pipes of different pipe diameters, lengths and wall thicknesses, so the universality is poor, and the application is limited. UTILITY MODEL CONTENTS
[0004] The utility model mainly solves the technical problems that the existing grinding equipment adopts single head and fixed position grinding rod, the grinding rod is difficult to adjust, the single head grinding production efficiency is low and the grinding equipment cannot adapt to cast pipes of different pipe diameters, lengths and wall thicknesses, and proposes a nodular cast iron pipe double -end internal grinding machine to improve the grinding efficiency and adapt to cast pipe grinding of different models.
[0005] The utility model provides a nodular cast iron pipe double -end internal grinding machine, which comprises: a roller device, a socket grinding trolley and a socket grinding trolley.
[0006] The cast pipe to be ground is placed on the roller device;
[0007] The socket grinding trolley and the socket grinding trolley respectively comprise: a trolley body, a walking motor, an adjusting seat, a grinding motor, a grinding rod, a grinding wheel and two air bags;
[0008] Walking wheels are arranged at the bottom of the trolley body; the walking motor and the two air bags are arranged on the trolley body; the walking motor is in transmission connection with at least one walking wheel;
[0009] The adjusting seat is installed at the top of the air bag; the grinding motor and the grinding rod are arranged on the adjusting seat; the grinding motor is in transmission connection with the grinding rod, and the end of the grinding rod is provided with the grinding wheel;
[0010] The grinding wheel of the socket grinding trolley faces the socket of the cast pipe;
[0011] The grinding wheel of the socket grinding trolley faces the socket of the cast pipe.
[0012] Preferably, the grinding rod is arranged in a grinding rod sleeve, and the grinding rod sleeve is installed on the adjusting seat.
[0013] The end of the polishing rod is connected with the mounting rod of the polishing wheel through a universal joint transmission shaft.
[0014] The universal joint transmission shaft extends from the polishing rod sleeve.
[0015] Preferably, the spigot polishing trolley travels on the corresponding spigot polishing trolley track.
[0016] The spigot polishing trolley travels on the corresponding spigot polishing trolley track.
[0017] Preferably, the roller device includes a driving roller and a driven roller.
[0018] The driving roller supports the spigot end of the cast pipe, and the driven roller supports the spigot end of the cast pipe.
[0019] One side of the driving roller is provided with a pinch roller.
[0020] Preferably, the motor of the driving roller is electrically connected with the roller motor frequency converter.
[0021] The walking motor is electrically connected with the walking motor frequency converter.
[0022] The polishing motor is electrically connected with the polishing motor frequency converter.
[0023] The roller motor frequency converter, the walking motor frequency converter, and the polishing motor frequency converter are electrically connected with the PLC controller through an industrial switch.
[0024] Preferably, the PLC controller is arranged in an electric control cabinet.
[0025] Preferably, the industrial switch is electrically connected with a touch screen and an operation button.
[0026] The PLC controller is electrically connected with an indicator light.
[0027] The touch screen, the operation button, and the indicator light are integrated on an operation table.
[0028] Preferably, a pneumatic proportional valve is arranged on the gas supply pipeline of the gas pocket, and the pneumatic proportional valve is electrically connected with the PLC controller.
[0029] Preferably, a spigot polishing end limit switch, a spigot polishing start limit switch, and a spigot polishing return limit switch are respectively arranged on the spigot polishing trolley track.
[0030] A spigot polishing end limit switch, a spigot polishing start limit switch, and a spigot polishing return limit switch are respectively arranged on the spigot polishing trolley track.
[0031] The double-head inner grinding machine for nodular cast iron pipe has the following advantages compared with the prior art.
[0032] 1、The double-head inner grinding machine is adopted, two polishing heads can polish two sections of the cast pipe, the polishing efficiency is greatly improved, the cast pipe with greater length can be accommodated, the application range is wide, the universality is strong, and the polishing of cast pipes of different models can be adapted.
[0033] 2、The polishing motor and the polishing rod on the adjusting seat can be lifted by adjusting the inflation amount of the air bag, the polishing rod can be lifted and adjusted, the double-head inner grinding machine for nodular cast iron pipe can adapt to the polishing of cast pipes with different diameters and wall thicknesses.
[0034] 3、For cast pipes with different lengths, only the positions of the polishing end limit switch, the polishing start limit switch and the polishing return limit switch need to be adjusted to perform the polishing operation, the operation difficulty of the operator is reduced to the maximum, the polishing efficiency of cast pipes of different models is improved, and the production cost of the equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0035] Figure 1 is a side view of the double-head inner grinding machine for nodular cast iron pipe provided by the utility model;
[0036] Figure 2 is a top view of the double-head inner grinding machine for nodular cast iron pipe provided by the utility model;
[0037] Figure 3 is a structural schematic view of the roller device provided by the utility model;
[0038] Figure 4 is a side view of the socket polishing trolley provided by the utility model;
[0039] Figure 5 is a top view of the socket polishing trolley provided by the utility model;
[0040] Figure 6 is an electrical principle diagram of the double-head inner grinding machine for nodular cast iron pipe provided by the utility model.
[0041] Mark No. : 1, cast pipe; 2, socket polishing trolley; 3, socket polishing trolley; 4, driving roller; 5, driven roller; 6, socket polishing trolley track; 7, socket polishing trolley track; 8, stop roller; 9, socket polishing end limit switch; 10, socket polishing start limit switch; 11, socket polishing return limit switch; 12, socket polishing end limit switch; 13, socket polishing start limit switch; 14, socket polishing return limit switch; 201, car body; 202, walking wheel; 203, walking motor; 204, polishing grinding wheel; 205, air bag; 206, polishing motor; 207, adjusting seat; 208, polishing rod; 209, polishing rod sleeve; 210, universal joint transmission shaft. DETAILED DESCRIPTION
[0042] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the utility model will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings, not all the contents.
[0043] As shown in Figures 1-2 The utility model discloses a double-end inner grinding machine for nodular cast iron pipe, which comprises a roller device, a socket polishing trolley 2 and a socket polishing trolley 3.
[0044] As shown in Figure 3 The roller device is used for placing the cast pipe 1 to be polished; the roller device comprises a driving roller 4 and a driven roller 5; the driving roller 4 supports the socket end of the cast pipe 1, and the driven roller 5 supports the socket end of the cast pipe 1; one side of the driving roller 4 is provided with a stop roller 8, which supports the socket end of the cast pipe 1 when the cast pipe 1 rotates.
[0045] As shown in Figures 4-5 The socket polishing trolley 2 and the socket polishing trolley 3 each comprise a car body 201, a walking motor 203, an adjusting seat 207, a polishing motor 206, a polishing rod 208, a polishing grinding wheel 204 and two air bags 205; the bottom four corners of the car body 201 are provided with walking wheels 202; the car body 201 is provided with the walking motor 203 and the two air bags 205; the walking motor 203 is in transmission connection with at least one walking wheel 202; the walking motor 203 drives the walking wheel 202 to walk; the socket polishing trolley 2 walks on the corresponding socket polishing trolley track 6; and the socket polishing trolley 3 walks on the corresponding socket polishing trolley track 7.
[0046] The adjusting seat 207 is installed on the top of the air bag 205; the polishing motor 206 and the polishing rod 208 are arranged on the adjusting seat 207; by adjusting the inflation amount of the air bag 205, the adjusting seat 207 and the polishing motor 206 and the polishing rod 208 thereon can be lifted and lowered, so that the polishing rod 208 can be lifted and adjusted, and the utility model can adapt to cast pipes with different pipe diameters and wall thicknesses.
[0047] The polishing motor 206 is in transmission connection with the polishing rod 208, and the polishing sand wheel 204 is arranged at the end of the polishing rod 208. The polishing motor 206 drives the polishing rod 208 to rotate, so that the polishing sand wheel 204 polishes the inner wall of the cast pipe 1. Specifically, the polishing rod 208 is arranged in the polishing rod sleeve 209, and the polishing rod sleeve 209 is installed on the adjusting seat 207; the end of the polishing rod 208 is connected with the mounting rod of the polishing sand wheel 204 through the universal joint transmission shaft 210; and the universal joint transmission shaft 210 extends out of the polishing rod sleeve 209. The polishing rod sleeve 209 can protect the polishing rod 208 and prolong the service life of the equipment.
[0048] The polishing sand wheel 204 of the socket polishing trolley 2 faces the socket of the cast pipe 1, and the socket polishing trolley 2 is used to polish the socket to the middle section of the cast pipe 1; the polishing sand wheel 204 of the socket polishing trolley 3 faces the socket of the cast pipe 1, and the socket polishing trolley 3 is used to polish the socket to the middle section of the cast pipe 1.
[0049] In the embodiment, as shown in the figure, Figure 6 The motor of the driving roller 4 is electrically connected with the roller motor frequency converter; the walking motor 203 is electrically connected with the walking motor frequency converter; the polishing motor 206 is electrically connected with the polishing motor frequency converter; and the roller motor frequency converter, the walking motor frequency converter and the polishing motor frequency converter are electrically connected with the PLC controller through the industrial switch. The roller motor frequency converter, the walking motor frequency converter and the polishing motor frequency converter and the PLC controller are arranged in the electric control cabinet. The utility model realizes the industrial Ethernet communication based on the industrial switch as a transmission medium, the PLC controller and each electric control component realize bidirectional communication, the PLC controller can send control signals to the electric control component and receive feedback information of the running state of the electric control component in real time, and the feedback information is converted into synchronous storage data records.
[0050] The industrial switch is electrically connected with a touch screen and an operation button; the PLC controller is electrically connected with an indicator light; the touch screen, the operation button and the indicator light are integrated on an operation table. A pneumatic proportional valve is arranged on a gas supply pipeline of the gas pocket 205, and the pneumatic proportional valve is electrically connected with the PLC controller. The PLC controller controls the pneumatic proportional valve to control the gas pocket 205. Communication is realized between the industrial Ethernet and the operation table. The PLC controller in the electric control cabinet and the operation button, the indicator light and the touch screen in the operation table are connected through the industrial Ethernet. The operator can operate the equipment through the operation button and the touch screen on the operation table, and the real-time working state of the equipment and the states of the limit switches are presented in the picture.
[0051] Different process parameters are added in the PLC controller according to different process requirements. The polishing motor 206 current, the rotating speed of the roller device and the walking speed of the polishing trolley corresponding to different pipe diameters, different lengths and different wall thicknesses of the cast pipe can be set and stored. The process parameters corresponding to different pipe types can be directly called, thereby saving the operation and debugging time of repeatedly manually inputting and adjusting different process parameters.
[0052] Further, the socket polishing trolley track 6 is respectively provided with a socket polishing end limit switch 9, a socket polishing start limit switch 10 and a socket polishing return limit switch 11. The socket polishing end limit switch 9, the socket polishing start limit switch 10 and the socket polishing return limit switch 11 are respectively electrically connected with the PLC controller, and the collected signals are sent to the PLC controller. Since the size of the trolley body 201 and the polishing rod 208 is fixed, the positions of the limit switches are adjusted and installed according to the length of the cast pipe 1. When the socket polishing start limit switch 10 detects the front wheel of the socket polishing trolley 2, the polishing abrasive wheel 204 is located at the socket position of the cast pipe 1. The socket polishing end limit switch 9 is located at the position close to the socket of the cast pipe 1 on the socket polishing trolley track 6. When the socket polishing end limit switch 9 detects the front wheel of the socket polishing trolley 2, the polishing abrasive wheel 204 is located at the middle position of the cast pipe 1. The socket polishing return limit switch 11 is located at the end away from the cast pipe 1 on the socket polishing trolley track 6. When the socket polishing return limit switch 11 detects the rear wheel of the socket polishing trolley 2, the polishing abrasive wheel 204 can be completely separated from the cast pipe 1, so that the socket polishing trolley 2 stops running.
[0053] The end-of-bell polishing limit switch 12, the start-of-bell polishing limit switch 13 and the return-of-bell polishing limit switch 14 are respectively arranged on the bell polishing trolley track 7. The end-of-bell polishing limit switch 12, the start-of-bell polishing limit switch 13 and the return-of-bell polishing limit switch 14 are respectively electrically connected with the PLC controller, and the collected signals are sent to the PLC controller. The positions of the limit switches are adjusted and installed according to the length of the cast pipe 1, so that when the start-of-bell polishing limit switch 13 detects the front wheels of the bell polishing trolley 3, the polishing grinding wheel 204 is just located at the bell position of the cast pipe 1. The end-of-bell polishing limit switch 12 is located at a position close to the bell of the cast pipe 1 on the bell polishing trolley track 7, so that when the end-of-bell polishing limit switch 12 detects the front wheels of the bell polishing trolley 3, the polishing grinding wheel 204 is just located at the middle position of the cast pipe 1. The return-of-bell polishing limit switch 14 is located at an end away from the cast pipe 1 on the bell polishing trolley track 7, so that when the return-of-bell polishing limit switch 14 detects the rear wheels of the bell polishing trolley 3, the polishing grinding wheel 204 can be completely separated from the cast pipe 1, and the bell polishing trolley 3 stops running.
[0054] The utility model sets up a plurality of limit switches, limit switches are used as the trigger position of polishing action, the utility model discloses double -end internal grinder, two polishing heads can polish two sections of cast pipe 1, can accommodate greater cast pipe 1 of length, and the scope of application is wide. The limit switches at different positions transmit the state command of polishing action to the PLC controller, the start-of-bell polishing limit switch detects the signal, and the PLC controller controls the polishing trolley to start polishing. The end-of-bell polishing limit switch detects the signal, and the PLC controller controls the polishing trolley to end polishing and start returning. The return-of-bell polishing limit switch detects the signal, and the PLC controller controls the polishing trolley to end returning and stop running. The PLC controller can set a delay switch-on instruction to control the sequence of the socket polishing trolley 2 and the bell polishing trolley 3, avoiding the polishing conflict of the middle section of the cast pipe 1. For cast pipes 1 of different lengths, only the positions of the end-of-bell polishing limit switch, the start-of-bell polishing limit switch and the return-of-bell polishing limit switch need to be adjusted to perform polishing operation, which maximally reduces the operation difficulty of operators and improves the polishing efficiency.
[0055] The working process of the double-end inner grinding machine for nodular cast iron pipe of the utility model is as follows: taking the cast pipe 1 with a length of 6 meters as an example, the socket grinding trolley 2 walks from the socket grinding trolley track 6 to the cast pipe 1, when the socket grinding start limit switch 10 detects a signal, the socket grinding trolley 2 enters the cast pipe 1 from the socket of the cast pipe 1, the PLC controller controls the socket grinding trolley 2 to start grinding, and the socket grinding trolley 2 walks forward and grinds synchronously; when the socket grinding end limit switch 9 detects a signal, the socket grinding trolley 2 grinds to the middle section of the cast pipe 1, that is, the 3-meter position of the cast pipe 1, the PLC controller controls the socket grinding trolley 2 to end grinding and start returning; when the socket grinding return limit switch 11 detects a signal, the PLC controller controls the socket grinding trolley 2 to end returning and stop running.
[0056] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments are modified, or some or all of the technical features are replaced equivalently, without making the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A double-end internal grinder for ductile iron pipe, characterized by, The utility model relates to a kind of pipe grinding device, including: Roller device, socket polishing trolley (2) and socket polishing trolley (3); The roller device is placed on the pipe (1) to be polished; The socket polishing trolley (2) and socket polishing trolley (3) respectively include: car body (201), walking motor (203), adjusting seat (207), polishing motor (206), polishing rod (208), polishing grinding wheel (204) and two air bags (205); The bottom four corners of the car body (201) are provided with walking wheels (202);Walking motor (203) and two air bags (205) are provided on the car body (201);The walking motor (203) is drivingly connected with at least one walking wheel (202); The adjusting seat (207) is installed on the top of the air bag (205);Polishing motor (206) and polishing rod (208) are provided on the adjusting seat (207);The polishing motor (206) is drivingly connected with the polishing rod (208), and the end of the polishing rod (208) is provided with the polishing grinding wheel (204); The polishing grinding wheel (204) of the socket polishing trolley (2) faces the socket of the pipe (1); The polishing grinding wheel (204) of the socket polishing trolley (3) faces the socket of the pipe (1).
2. The ductile iron pipe double head internal grinder according to claim 1, characterized in that, The polishing rod (208) is provided in the polishing rod sleeve (209), and the polishing rod sleeve (209) is installed on the adjusting seat (207); The end of the polishing rod (208) is connected with the mounting rod of the polishing grinding wheel (204) through the universal joint transmission shaft (210); The universal joint transmission shaft (210) extends out of the polishing rod sleeve (209).
3. The ductile iron pipe double head internal grinder according to claim 1, characterized in that, The socket polishing trolley (2) walks on the corresponding socket polishing trolley track (6); The socket polishing trolley (3) walks on the corresponding socket polishing trolley track (7).
4. The ductile iron pipe double head internal grinder according to claim 1, characterized in that, The roller device includes driving roller (4) and driven roller (5); The driving roller (4) supports the socket end of the pipe (1), and the driven roller (5) supports the socket end of the pipe (1); The side of the driving roller (4) is provided with a pinch roller (8).
5. The ductile iron pipe double head internal grinder according to claim 4, characterized in that, The motor of the driving roller (4) is electrically connected with the roller motor frequency converter; The walking motor (203) is electrically connected with the walking motor frequency converter; The polishing motor (206) is electrically connected with the polishing motor frequency converter; The roller motor frequency converter, the walking motor frequency converter and the polishing motor frequency converter are electrically connected with the PLC controller through the industrial switch.
6. The ductile iron pipe double head internal grinder according to claim 5, characterized in that, The PLC controller is arranged in the electric control cabinet.
7. The ductile iron pipe double head internal grinder according to claim 5, characterized in that, The industrial switch is electrically connected with the touch screen, operation button; The PLC controller is electrically connected with the indicator light; The touch screen, operation button and indicator light are integrated on the operation table.
8. The ductile iron pipe double head internal grinder according to claim 5, characterized in that, The air supply pipeline of the air bag (205) is provided with a pneumatic proportional valve, and the pneumatic proportional valve is electrically connected with the PLC controller.
9. The ductile iron pipe double head internal grinder according to claim 3, characterized in that, The socket polishing trolley track (6) is respectively provided with a socket polishing end limit switch (9), a socket polishing start limit switch (10) and a socket polishing return limit switch (11). The end-of-bell-polishing limit switch (12), the start-of-bell-polishing limit switch (13) and the return-of-bell-polishing limit switch (14) are respectively arranged on the bell-polishing trolley track (7).