CN-115740592-B - Safety device for preventing milling clamping body of steel pipe end milling machine from freely falling

CN115740592BCN 115740592 BCN115740592 BCN 115740592BCN-115740592-B

Abstract

The invention relates to a safety device for preventing a milling clamping body of a steel pipe end milling machine from freely falling, which is characterized in that an anti-falling mechanism is newly arranged on the steel pipe end milling machine, the anti-falling mechanism consists of a piston cylinder B, a push-pull plate, a connecting seat, a supporting rod and other parts, three paths of two-position direct-acting electromagnetic valves are adopted to regulate high-pressure air to control the expansion and contraction of a piston rod B, the piston rod B drives the two supporting rods to slide in a guide shaft sleeve through the connecting seat and the push-pull plate, after the milling operation of the end face of a steel pipe is finished, the supporting rods are driven to extend outwards into the inner circle of an upper semicircular clamping body, the upper semicircular clamping body is stably supported to prevent the upper semicircular clamping body from falling, and the safety device is safe and reliable, so that the falling phenomenon of the upper semicircular clamping body caused by unexpected faults or misoperation of personnel is effectively avoided, and the safety of maintenance operation of workers is ensured.

Inventors

MA YINPENG
DUAN ZHICHAO
WEI JUNFENG
WANG XIAOWEN
YAN JINGYU
MIAO LIXIAN
WANG XINCHUAN

Assignees

郑州京华制管有限公司

Dates

Publication Date: 20260505
Application Date: 20211217

Claims (8)

1. The utility model provides a prevent that steel pipe end from milling safety device that clamping body freely falls of flat-bed machine mills, includes that steel pipe end mills flat-bed machine and installs the anti-falling mechanism on steel pipe end mill flat-bed machine upper portion, characterized by: A middle plate is arranged between two side plates of the steel pipe end milling machine, a milling cutter disc is arranged in the middle of the outer side surface of the middle plate, a platform plate is arranged between the outer sides of the upper ends of the two side plates, the platform plate is positioned above a lower Fang Xiping workbench, a lower semicircular clamping body which corresponds to the position of the milling cutter disc and is provided with an upward opening is fixedly connected to the workbench, a piston cylinder A is vertically and fixedly connected to the upper end surface of the platform plate, a piston rod A of the piston cylinder A extends downwards from a round hole on the platform plate, the lower end of the piston rod A is fixedly connected with an upper semicircular clamping body provided with a downward opening through a seat plate, and the upper semicircular clamping body and the lower semicircular clamping body are opposite to each other vertically; The anti-falling mechanism comprises a piston type cylinder B and a supporting rod, wherein a through hole is formed in the upper portion of the middle plate, a guide shaft sleeve is coaxially and fixedly sleeved in the through hole, the supporting rod is slidably sleeved in the guide shaft sleeve, the outer end of the supporting rod can extend into the position right below the upper semicircular clamping body, a connecting seat is arranged at the inner end of the supporting rod, a supporting plate is fixedly connected between the inner sides of the upper ends of the two side plates, the piston type cylinder B is transversely and fixedly connected to the outer side face of the supporting plate, and a piston rod B of the piston type cylinder B is hinged to the connecting seat.
2. The safety device for preventing the milling clamping bodies of the steel pipe end milling machine from freely falling according to claim 1 is characterized in that two milling cutterheads are arranged side by side, two lower semicircular clamping bodies are correspondingly arranged, and two piston type cylinder A and two upper semicircular clamping bodies are correspondingly arranged.
3. The safety device for preventing the milling clamping body of the steel pipe end milling machine from freely falling according to claim 2 is characterized in that two supporting rods are arranged side by side, a push-pull plate is connected between the inner ends of the two supporting rods, the push-pull plate and the supporting rods are fixedly connected through a fastening nut, and the connecting seat is arranged in the middle of the push-pull plate.
4. The safety device for preventing the milling clamping body of the steel pipe end milling machine from freely falling according to claim 1, wherein a conveying table is arranged on the outer side of the workbench, a sliding support for supporting the steel pipe is arranged on the conveying table, and a V-shaped sliding groove corresponding to the position of the lower semicircular clamping body is arranged on the sliding support.
5. The safety device for preventing the milling clamping body of the steel pipe end milling machine from freely falling according to claim 1, wherein the outer side of the platform plate is provided with a guide hole, and the outer side of the seat plate is provided with a guide rod which penetrates through the guide hole and extends upwards.
6. The safety device for preventing the milling clamping body of the steel pipe end milling machine from freely falling according to claim 5, wherein the outer side of the guide rod is vertically and fixedly connected with a marker post with the same length as the guide rod, and the inner side of the upper end of the marker post is provided with a proximity switch.
7. The safety device for preventing the milling clamping body of the steel pipe end milling machine from freely falling according to claim 1 is characterized in that a direct-acting electromagnetic valve is connected to the piston type cylinder B, a junction box is arranged on one side of a valve body of the electromagnetic valve, a static iron core is arranged at the upper end of the valve body, an air channel A communicated with an inner cavity of the valve body is arranged in the middle of the static iron core, an air channel B and an air channel C are arranged at the lower end of the valve body, the air channel B is communicated with the inner cavity of the valve body, a valve core capable of sealing the air channel C is connected to the inner end of the air channel C through a spring, and a coil sleeved outside the valve core is arranged at the upper part of the inner cavity of the valve body.
8. The safety device for preventing the milling clamping body of the steel pipe end milling machine from freely falling according to claim 7, wherein a sealing plug is arranged at the lower end of the valve core, and the air channel C is sealed by the sealing plug.

Description

Safety device for preventing milling clamping body of steel pipe end milling machine from freely falling Technical Field The invention relates to the technical field of auxiliary equipment for milling end faces of steel pipes, in particular to a safety device for preventing a milling clamping body of a milling machine of an end head of a steel pipe from freely falling. Background The steel pipe is manufactured by rolling and forming a steel strip with certain width and thickness, high-frequency welding, scar removing, air cooling, water cooling, sizing, sawing, straightening, milling flat head, checking, finished product and the like. The milling process of the end face after sawing the steel pipe is an important process for guaranteeing the quality of the steel pipe in the steel pipe manufacturing process, and the milling process of the end face of the steel pipe is performed by clamping the end part of the steel pipe by using a clamping device arranged on a milling machine, wherein the clamping device clamps the steel pipe through an upper semicircular clamping body and a lower semicircular clamping body, and grooves are formed in the inner surface of the clamping body to guarantee the clamping effect. After the outer circle surface of the end part of the steel pipe is clamped, a disc milling head of the milling machine starts to slowly feed the end part of the steel pipe for milling, and uneven surfaces and partial residual scrap iron left after sawing the end part of the steel pipe are milled, so that the technical standard of flatness and smoothness required by the end part of the steel pipe is achieved. After a period of use, the alloy steel tool bit used for the milling head of the steel pipe end face milling machine needs to be replaced by a new milling tool because the milling blade is not sharp, at the moment, the upper semicircular clamping body of the clamping device for clamping the steel pipe needs to be lifted, the upper semicircular clamping body is made of steel with the weight of about 20Kg, and the lifting of the upper semicircular clamping body is realized by the movement of a cylinder piston rod at the upper part of the steel pipe end face milling machine. After the upper semicircular clamping body is lifted up, the maintenance worker can replace the milling cutter at the position. In some cases, after the air compressor stops supplying air due to sudden power failure in a workshop, the piston cylinder on the steel pipe end face milling machine loses high-pressure air supply, or the electric and pneumatic elements fail to cause the falling of the steel pipe milling clamping body due to improper operation and matching of staff, or the upper semicircle of the clamping body has no sign due to failure of the piston cylinder air supply pipeline, and the upper semicircle of the clamping body is broken to the shoulder and back of a maintenance worker who is replacing a milling cutter to cause industrial accidents, and the industrial accidents caused by the sudden falling of the upper part of the steel pipe milling clamping body occur in steel pipe manufacturing enterprises. In order to thoroughly eliminate the hidden trouble problem of the unsafe accident, a device for preventing the free falling of the upper milling clamping body of the steel pipe end milling machine is developed, and the device is a problem which needs to be solved urgently in order to ensure the safety of maintenance work in the steel pipe manufacturing industry. Disclosure of Invention In order to solve the problems, the invention provides a safety device for preventing a milling clamping body of a steel pipe end milling machine from freely falling. The technical scheme of the invention is that the safety device for preventing the milling clamping body of the steel pipe end milling machine from freely falling comprises a steel pipe end milling machine and a falling prevention mechanism arranged at the upper part of the steel pipe end milling machine, and is characterized in that: A middle plate is arranged between two side plates of the steel pipe end milling machine, a milling cutter disc is arranged in the middle of the outer side surface of the middle plate, a platform plate is arranged between the outer sides of the upper ends of the two side plates, the platform plate is positioned above a lower Fang Xiping workbench, a lower semicircular clamping body which corresponds to the position of the milling cutter disc and is provided with an upward opening is fixedly connected to the workbench, a piston cylinder A is vertically and fixedly connected to the upper end surface of the platform plate, a piston rod A of the piston cylinder A extends downwards from a round hole on the platform plate, the lower end of the piston rod A is fixedly connected with an upper semicircular clamping body provided with a downward opening through a seat plate, and the upper semicircular clamping body and the lower semicircular clamping body a