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CN-121783397-B - Large-scale forging hydraulic press pull rod atress monitoring devices

CN121783397BCN 121783397 BCN121783397 BCN 121783397BCN-121783397-B

Abstract

The invention belongs to the technical field of monitoring devices, and particularly relates to a large-scale forging hydraulic press pull rod stress monitoring device which comprises two anchor clamps, wherein two fixing blocks are fixedly connected to the outer walls of the two anchor clamps, the fixing blocks are fixed through bolts, the anchor clamps are fixed on the outer sides of a pull rod, connecting plates are fixedly connected to the side walls of the two anchor clamps, an elastic frame is fixedly connected to the upper side wall of the connecting plate at the lower side, a resistance strain gauge is adhered to the upper side wall of the elastic frame, and the connecting plates at the lower side are connected with the left side wall of the elastic frame through an amplifying assembly. According to the invention, after the monitoring device is mounted on the surface of the pull rod of the large-scale forging hydraulic press through the anchor ear, the connection strength between the anchor ear and the pull rod can be further enhanced, and after the anchor ear deflects due to vibration, the situation can be timely detected, so that the problem that the accuracy of the monitoring device is influenced due to the change of a reference is avoided.

Inventors

  • SU ZHENHUA
  • HE BO
  • FAN YULIN
  • MA HAIKUAN
  • WU LIANG
  • LI LU
  • WANG JIANGUO
  • MA YONGJUN
  • LI FEI

Assignees

  • 中国重型机械研究院股份公司

Dates

Publication Date
20260508
Application Date
20260305

Claims (7)

  1. 1. The utility model provides a large-scale forging hydraulic press pull rod atress monitoring devices, includes two staple bolt (1), two equal fixedly connected with of outer wall of staple bolt (1) two fixed blocks (2), fixed block (2) are fixed through the bolt, fix staple bolt (1) in the outside of pull rod, two equal fixedly connected with connecting plate (3) of lateral wall of staple bolt (1), be located the downside the last lateral wall fixedly connected with elastic support (4) of connecting plate (3), the last lateral wall of elastic support (4) is pasted and is had resistance strain gauge (5), is located the downside connecting plate (3) are connected through the left side wall of amplifying subassembly (6) and elastic support (4), its characterized in that still includes: the adsorption component (10) is arranged on the side wall of the anchor ear (1) and further improves the firmness between the anchor ear (1) and the pull rod; The detection assembly (14) is arranged on the outer wall of the anchor ear (1), the relative sliding of the anchor ear (1) and the pull rod can be detected, the amplification assembly (6) comprises a support frame (61) fixedly connected with the upper side wall of the lower side connecting plate (3), a rocker (62) is rotatably connected with the inner wall of the support frame (61), the left side wall of the elastic frame (4) is connected with a connecting frame (7), the right end of the rocker (62) is rotatably connected with the connecting frame (7), the rocker (62) and the lower side connecting plate (3) are connected with the same spring, the upper side is located, the lower side wall of the connecting plate (3) is fixedly connected with an adjusting cylinder (8), an adjusting pin (9) is movably inserted into the adjusting cylinder (8), the lower end of the adjusting pin (9) is of a spherical structure and is contacted with the rocker (62), and the adjusting cylinder (8) is fixed through a positioning bolt.
  2. 2. The large-scale forging hydraulic press pull rod stress monitoring device according to claim 1, wherein the adsorption assembly (10) comprises an adsorption cylinder (101) fixedly connected to the outer wall of the hoop (1), the adsorption cylinder (101) is of an arc-shaped structure, the rear side wall of the adsorption cylinder (101) is fixedly communicated with a plurality of suckers (102), the rear end of each sucker (102) is located in the hoop (1), a piston disc (11) is slidably arranged in the adsorption cylinder (101), two pull rods (12) are fixedly connected to the upper side wall of each piston disc (11), the upper ends of the two pull rods (12) penetrate through the adsorption cylinder (101), and the same pull plate (13) is fixedly connected between each piston disc (11) and the corresponding adsorption cylinder (101).
  3. 3. The large-scale forging hydraulic press pull rod stress monitoring device according to claim 1, wherein the detection assembly (14) comprises a detection frame (141) fixedly connected to the outer wall of the hoop (1), the detection frame (141) is of an L-shaped structure, a jack is formed in the side wall of the detection frame (141), a transverse pin (142) is movably inserted into the jack, one end of the transverse pin (142) close to the pull rod is fixedly connected with a movable frame (15), the same spring is connected between the movable frame (15) and the detection frame (141), a detection wheel (16) is rotatably connected to the inner wall of the movable frame (15), a rubber ring (17) is fixedly sleeved on the outer wall of the detection wheel (16), two trigger switches (18) are fixedly connected to the side wall of the detection wheel (16), one end of the movable frame (15) close to the trigger switches (18) is fixedly connected with a trigger rod (19), the trigger rod (19) is of an L-shaped structure, one end of the trigger rod (19) far away from the movable frame (15) is located between the two trigger switches (18), and the side wall of the movable frame (15) is connected with a bolt (20).
  4. 4. The large-scale forging hydraulic press pull rod stress monitoring device according to claim 1, wherein the side walls of two opposite sides of the connecting plates (3) are connected with the same sealing frame (21) through bolts, the side walls of two opposite sides of the sealing frame (21) are fixedly connected with the same protective airbag cover (22), the upper side wall of the connecting plates (3) is fixedly communicated with an exhaust pipe (23), a one-way valve (24) is arranged in the exhaust pipe (23), the upper side wall of the connecting plates (3) is fixedly connected with a display cylinder (25), the display cylinder (25) is communicated with the upper side connecting plates (3) through short pipes (26), the lower side inner wall of the display cylinder (25) is connected with a piston plate (27) through springs, the upper side wall of the piston plate (27) is fixedly connected with a display column (28), and the upper side wall of the display cylinder (25) is provided with a through hole matched with the display column (28).
  5. 5. The device for monitoring the stress of the pull rod of the large forging hydraulic press according to claim 1, wherein two anti-slip rubber strips (29) are fixedly connected to the inner wall of the anchor ear (1).
  6. 6. The device for monitoring the stress of the pull rod of the large forging hydraulic press according to claim 1, wherein the outer walls of the two hoops (1) are fixedly connected with guide cylinders (30), the outer wall of the hoop (1) positioned at the lower side is fixedly connected with a transverse plate (31), and the upper side wall of the transverse plate (31) is fixedly connected with guide pins (32) matched with the guide cylinders (30).
  7. 7. The large-scale forging hydraulic press pull rod stress monitoring device according to claim 2, wherein the left side and the right side of the pull plate (13) are fixedly connected with bent plates (33), the outer walls of the left side and the right side of the adsorption cylinder (101) are fixedly connected with limiting cylinders (34), the lower ends of the bent plates (33) are positioned in the limiting cylinders (34), and the limiting cylinders (34) fix the bent plates (33) through limiting bolts (35).

Description

Large-scale forging hydraulic press pull rod atress monitoring devices Technical Field The invention belongs to the technical field of monitoring devices, and particularly relates to a large-scale forging hydraulic press pull rod stress monitoring device. Background The hydraulic forging press has the advantages that the working pressure is high, the forging frequency is high, in actual production, the load condition of the rapid hydraulic forging press is very complex, under the condition that a stress monitoring and alarming device is not available, the normal working of the hydraulic forging press can be ensured only by strictly adhering to the operation rules and carefully controlling the eccentricity, and once the manual control fails, the cross beam deflects, the stress load is overlarge, the hydraulic forging press can bear serious eccentric load, the bending stress of the upright post under the eccentric load greatly exceeds the tensile stress under the pure center load, so that the upright post is in a very unfavorable working condition, and various press upright post (pull rod) stress detection systems have been developed at home and abroad before, however, due to the severe working environment of the hydraulic press, the large field humidity, the large temperature fluctuation, the complex electromagnetic environment and the like, the general detection mode cannot be adequate for such severe environment, and the upright post (pull rod) stress protection system is not developed for many times, but is not operated for a long time, for example, the large-scale forging press stress monitoring device proposed by the patent publication No. CN202853822U is failed. The monitoring device of the large-scale forging hydraulic press pull rod is arranged on the surface of the pull rod through the anchor ear, when the hydraulic press works, the pull rod can vibrate due to hydraulic pulse vibration and forging impact vibration to generate high-frequency vibration, fatigue loosening of anchor ear fastening bolts can be caused by the vibration, the reference points for monitoring the distance between two anchor ears can be shifted due to the loosening of the bolts, the distance change measured by the sensor is caused to be not the actual strain of the pull rod, but the false displacement generated by anchor ear sliding, and finally the accuracy of the detection reference is directly destroyed. Therefore, a device for monitoring the stress of a pull rod of a large-scale forging hydraulic machine is provided to solve the problems. Disclosure of Invention The invention aims to solve the problems and provides a device for monitoring the stress of a pull rod of a large-scale forging hydraulic machine. In order to achieve the purpose, the invention adopts the following technical scheme that the large-scale forging hydraulic press pull rod stress monitoring device comprises two anchor clamps, wherein the outer walls of the two anchor clamps are fixedly connected with two fixing blocks, the fixing blocks are fixed through bolts, the anchor clamps are fixed on the outer sides of the pull rods, the side walls of the two anchor clamps are fixedly connected with connecting plates, the upper side wall of the connecting plate positioned at the lower side is fixedly connected with an elastic frame, the upper side wall of the elastic frame is stuck with a resistance strain gauge, and the connecting plates positioned at the lower side are connected with the left side wall of the elastic frame through an amplifying assembly, and the large-scale forging hydraulic press pull rod stress monitoring device further comprises: the adsorption component is arranged on the side wall of the anchor ear, so that the firmness between the anchor ear and the pull rod is further improved; the detection component is arranged on the outer wall of the anchor ear and can detect the relative sliding of the anchor ear and the pull rod. In the large-scale forging hydraulic press pull rod atress monitoring devices of above-mentioned, the subassembly of enlargies includes the support frame of fixed connection at downside connecting plate upper side wall, the inner wall of support frame rotates and is connected with the wane, the left side wall of elastic frame is connected with the link, the right-hand member of wane and link rotate to be connected, be connected with same spring between wane and the downside connecting plate, be located the upside the lower side wall fixedly connected with of connecting plate adjusts the section of thick bamboo, the activity is pegged graft in the section of thick bamboo of adjusting has the regulation round pin, the lower extreme of regulation round pin is spherical structure, and contacts with the wane, the regulation section of thick bamboo is fixed through positioning bolt to adjust the regulation round pin. In the large-scale forging hydraulic press pull rod atress monitoring devices of above-mentioned, the absorption