CN-121990455-A - Lifting device of sewage lifting pump of sewage treatment plant

CN121990455ACN 121990455 ACN121990455 ACN 121990455ACN-121990455-A

Abstract

The invention discloses a lifting device of a sewage lifting pump of a sewage treatment plant, which comprises a door-shaped frame, a movable base, a pulley assembly, a hoisting structure and a lifting hook assembly, wherein a steel wire rope is arranged on the inner side of the door-shaped frame in an M-shaped manner, and the lifting hook assembly is provided with a tension detection structure consisting of a strain gauge and a data processing unit and is in signal linkage with the pulley assembly. The top pulley assembly of the portal frame can horizontally slide, the lifting stroke is increased by matching with a double-acting pulley structure, the height limit of a pump house crane is broken through, the one-time continuous lifting of the deep pool lifting pump is realized, the tension detection structure monitors the stress of a steel wire rope in real time, and the position of the fixed pulley is automatically adjusted to balance the load, so that deflection, collision and overload fracture are avoided. The device has the advantages of stable structure and flexible movement, can adapt to different working conditions without modifying a pump room, omits dangerous procedures such as sectional lifting, high-altitude connection and the like, greatly improves the maintenance efficiency and the operation safety, effectively protects the pump body structure, and is suitable for lifting and maintenance of various deep-pool sewage lifting pumps.

Inventors

ZHANG ZHENGHUI
ZHU ZHENGJUN
ZHANG AIHONG
JI MUYAO
ZHOU SENSEN
CAO ZHENGWU
ZHANG LEI

Assignees

长江生态环保集团有限公司
芜湖市三峡智慧水管家有限责任公司

Dates

Publication Date: 20260508
Application Date: 20260331

Claims (10)

1. A lifting device of a sewage lifting pump of a sewage treatment plant is characterized by comprising a door-shaped frame (2) and a movable base (1) fixed at the bottom end of the door-shaped frame (2), wherein pulley assemblies (4) are horizontally arranged at two ends of the top of the door-shaped frame (2) in a sliding mode, hoisting structures are arranged at two inner sides of the bottom of the door-shaped frame (2), steel wires (5) are arranged at the inner sides of the door-shaped frame (2) and are arranged into M shapes through the hoisting structures and the pulley assemblies (4), a lifting hook assembly (3) is connected to the middle of the steel wires (5), a tension detection structure for monitoring and detecting tension of the steel wires (5) is arranged on the lifting hook assembly (3), and a tension detection structure signal is connected with the pulley assemblies (4).
2. The lifting device of the sewage lifting pump of the sewage treatment plant according to claim 1, wherein the door-shaped frame (2) comprises a push rod (21) horizontally arranged in the middle and upright rods vertically fixed at two ends of the push rod (21), the upright rods are fixed on the movable base (1), two sides of the upright rods are connected with diagonal braces (22), the bottom ends of the diagonal braces (22) are connected to the movable base (1), and the push rod (21) is of an I-shaped steel structure.
3. The lifting device of the sewage lifting pump of the sewage treatment plant according to claim 2, wherein the pulley assembly (4) comprises a movable seat (41) with a U-shaped section, movable wheels (42) are rotatably arranged on opposite inner side walls of the movable seat (41), fixed pulleys (44) are rotatably connected to the bottom of the movable seat (41), the fixed pulleys (44) are positioned right below the center of the movable seat (41), a driving unit for driving the movable wheels (42) to rotate is arranged on the outer wall of the movable seat (41), the tension detection structure is in signal connection with the driving unit, and the movable wheels (42) are positioned in through grooves on two sides of the ejector rod (41).
4. A handling device for a sewage lift pump of a sewage treatment plant according to claim 3, wherein said driving unit comprises a transmission assembly (43) fixed to said mobile base (41) and a mobile motor (45) mounted on the transmission assembly (43), the transmission assembly (43) comprising a gearwheel and a pinion meshing with each other, the pinion being mounted on the output shaft of the mobile motor (45), the gearwheel being connected to the mounting shaft of said mobile wheel (42).
5. The lifting device of the sewage lifting pump of the sewage treatment plant according to claim 1, wherein the lifting hook assembly (3) comprises a lifting seat (31), a through groove is formed in the side wall of the lifting seat (31), movable pulleys (32) are rotatably arranged at the bottom and the inner top in the through groove, the steel wire rope (5) penetrates through the two movable pulleys (32), a lifting hook (33) is fixedly connected to the bottom end of the lifting seat (31), and the tension detection structure is arranged at the top of the lifting seat (31).
6. The lifting device of the sewage lifting pump of the sewage treatment plant according to claim 5, wherein the tension detection structure comprises a data processing unit fixed at the top of the lifting seat (31), the data processing unit is connected with a strain gauge (35), the strain gauge (35) is fixed on the steel wire rope (5), and a signal module (34) is arranged on the data processing unit and is in signal connection with a control unit of the pulley assembly (4) through the signal module (34).
7. The lifting device of the sewage lifting pump of the sewage treatment plant according to claim 6, wherein limiting sleeves (36) are fixedly sleeved on the steel wire ropes (5) on two sides of the lifting seat (31), the limiting sleeves (36) are connected with the signal module (34) in a signal mode, and the limiting sleeves (36) are located between the lifting seat (31) and the strain gauges (35).
8. The lifting device of the sewage lifting pump of the sewage treatment plant according to claim 1, wherein the movable base (1) comprises a bottom plate (11), supporting wheels (12) are arranged at the bottom of the bottom plate (11), first reinforcing steel (13) and second reinforcing steel (14) of an I-shaped steel structure are fixedly arranged at the top of the bottom plate (11), the bottom end of the door-shaped frame (2) is fixed in the middle of the top of the first reinforcing steel (13), the second reinforcing steel (14) is perpendicular to the first reinforcing steel (14) and is distributed at equal intervals along the length direction of the first reinforcing steel (13), and the winding structure is arranged on the second reinforcing steel (14).
9. A lifting device for a sewage lifting pump of a sewage treatment plant as set forth in claim 8, wherein said winding structure comprises a winding engine (15) and a winding engine mounting base plate fixed to said second reinforcing steel (14).
10. A method for lifting a sewage lifting pump in a sewage treatment plant, characterized by using a lifting device according to any one of claims 1-9, comprising the steps of: s1, firstly, emptying a water collecting tank of a water inlet pump house, cleaning sundries and sediments at the bottom of the water collecting tank, checking the supporting stability of a movable base (1), ensuring that a supporting wheel (12) and a door-shaped frame (2) are not loosened, and checking the normal operation of a tension detection structure; S2, moving the lifting device to the position right above the sewage lifting pump, controlling the winding structure to unwind the steel wire rope (5), connecting the steel wire rope (5) with the lifting lug of the sewage lifting pump through the lifting hook component (3), checking the fitting degree of the steel wire rope (5) with the fixed pulley (44) and the movable pulley (32), ensuring that the steel wire rope (5) is free from abrasion and broken wires, and installing the limiting sleeve (36) in place; S3, a starting structure is used for winding, two pulley assemblies (4) are synchronously controlled to move, the positions of fixed pulleys (44) at the bottom of the pulley assemblies (4) are dynamically adjusted according to tension data detected by strain gauges (35), the stress angle of the steel wire ropes (5) is optimized, and if the tension of the steel wire ropes (5) at one side of the lifting hook assemblies (3) is abnormal, the positions of the moving seats (41) are adjusted through the driving units (43), and the fixed pulleys (44) are driven to move, so that the steel wire ropes (5) at two sides of the lifting hook assemblies (3) are positioned at the same angle, and the tension balance at two sides is ensured; S4, after the sewage lifting pump is lifted to the designated height, the gate-type frame (2) is moved to the unloading area, the lifting hook (33) is slowly lowered, the sewage lifting pump is stably placed on the ground, and lifting operation is completed.

Description

Lifting device of sewage lifting pump of sewage treatment plant Technical Field The invention relates to the technical field of lifting devices, in particular to a lifting device of a sewage lifting pump of a sewage treatment plant. Background In a sewage treatment plant operation system, a water inlet pump house is a key pretreatment link, and has the core function of receiving sewage conveyed by a municipal pipe network, and pressurizing and lifting the sewage to a subsequent sedimentation tank, a biochemical tank and other treatment units through a sewage lifting pump, and meanwhile, flexibly adjusting the water inlet flow according to the subsequent process load, so that the stable operation of a sewage treatment system is ensured. The sewage lifting pump is used as core power equipment and runs in sewage medium for a long time, and is easy to stop and overhaul due to the problems of impeller blockage, motor failure and the like, and equipment lifting operation before overhaul is a key link for guaranteeing overhaul efficiency and safety. The current part of sewage treatment plant water inlet pump house is limited by building structure, exists "pump pool is dark, hoist height is not enough" contradiction, and pump pool bottom is high generally to about 10 meters from ground, and the hoist that pump house upper portion configured is high only about 5 meters from ground, can't satisfy the demand that sewage elevator pump once only lifts by crane to ground from the bottom of the pool. In order to solve the problem, the existing maintenance operation needs to adopt a sectional hoisting mode, a steel wire rope or an iron chain is firstly connected with a hanging ring of the sewage lifting pump in advance, when equipment fails, a crane firstly lifts a sling to enable a pump body to rise 5 meters from the bottom of a tank (namely, the crane reaches the maximum lifting height), then channel steel or steel pipes are erected on two sides of a pump tank, the sling is secondarily fixed through parts such as a cow nose, a crane lifting hook is put down again to hook, and the operation is repeated for at least 3 times, so that the pump body can be completely lifted out of the pump tank. The sectional lifting mode has the obvious defects that on one hand, in the process of lifting for many times, the pump body needs to frequently stop in the air and change lifting points, the probability of collision and friction between the pump body and objects such as the inner wall of a pump pool and an erected channel steel is increased, the deformation of a pump body shell and the damage of sealing parts are easily caused, the overhaul period is prolonged, the subsequent operation precision of equipment is possibly reduced, on the other hand, operators need to repeatedly perform sling connection and fixing operation on two sides of the pump pool (in dangerous areas 10 meters away from the bottom of the pool), if safety protection measures are not in place, personnel falling accidents are easily caused, and serious threat is caused to the life safety of the operators. Disclosure of Invention The invention aims to solve the technical problem that a pump pool is deeper and a crane cannot lift a sewage lifting pump at one time. In order to solve the technical problems, the technical scheme includes that the lifting device of the sewage lifting pump of the sewage treatment plant comprises a door-shaped frame and a movable base fixed at the bottom end of the door-shaped frame, pulley assemblies are horizontally arranged at two ends of the top of the door-shaped frame in a sliding mode, hoisting structures are arranged at two inner sides of the bottom of the door-shaped frame, steel wire ropes are arranged at the inner sides of the door-shaped frame and are arranged into M shapes through the hoisting structures and the pulley assemblies, the middle part of each steel wire rope is connected with a lifting hook assembly, a tension detection structure for monitoring and detecting the tension of each steel wire rope is arranged on each lifting hook assembly, and a tension detection structure is connected with the pulley assemblies through signals. Preferably, the door-shaped frame comprises a push rod horizontally arranged in the middle and upright rods vertically fixed at two ends of the push rod, wherein the upright rods are fixed on the movable base, both sides of the upright rods are connected with diagonal braces, the bottom ends of the diagonal braces are connected to the movable base, and the push rod is of an I-shaped steel structure. Preferably, the pulley assembly comprises a movable seat with a U-shaped section, movable wheels are rotatably arranged on opposite inner side walls of the movable seat, a fixed pulley is rotatably connected to the bottom of the movable seat and positioned right below the center of the movable seat, a driving unit for driving the movable wheels to rotate is arranged on the outer wall of the movable se