CN216158492U

CN216158492U - Force balance type anti-inclination constant force spring support and hanger

Info

Publication number: CN216158492U
Application number: CN202122288075.2U
Authority: CN
Inventors: 周小兵; 何旭东; 蔡晓峰; 阳东升; 柏军; 乐柱; 刘丰; 向兵
Original assignee: Jiangsu Sunpower Piping Technology Co ltd; China Wuhuan Engineering Co Ltd
Current assignee: Jiangsu Sunpower Piping Technology Co ltd; China Wuhuan Engineering Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-04-01
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses a force balance type anti-inclination constant-force spring support and hanger, which solves the problems of poor stability, low precision and small displacement stroke of the existing spring support and hanger. The technical scheme includes that the device comprises a fixed frame and a main spring assembly located in the center of the fixed frame, wherein the upper end of the main spring assembly is connected with a top plate through a supporting tube assembly, and the upper end of the main spring assembly is connected with the supporting tube assembly through a guide roller assembly; the guide roller assembly comprises a roller frame and guide rollers symmetrically arranged on the left and right of the roller frame; auxiliary spring assemblies are symmetrically arranged on the left side and the right side of the guide roller assembly, and the auxiliary spring assemblies are in contact with the guide rollers on the corresponding side of the guide roller assembly. The utility model has the advantages of simple structure, good stability, long service life, large displacement stroke and high precision, and can effectively prevent the inclination of equipment or a pipe bracket.

Description

Force balance type anti-inclination constant force spring support and hanger

Technical Field

The utility model relates to the technical field of pipeline supporting and hanging, in particular to a force balance type anti-inclination constant-force spring supporting and hanging frame.

Background

A large number of thermal pipelines need to be built in the industries of chemical engineering, steel making, power generation and the like, the thermal pipelines can displace due to thermal expansion in the operation of equipment, in order to avoid the damage of reaction force generated by thermal displacement of the pipelines to the whole pipeline system and a pipeline supporting system, a constant-force spring support and hanger frame needs to be adopted to suspend or support key equipment and important pipelines, and even if the displacement of the pipelines changes, constant suspension force or supporting force can be obtained. The existing constant force spring support and hanger mostly adopts a lever or weight type pulley form, and the lateral deviation is accompanied in the vertical moving process, so that the lateral additional stress is brought to the supported equipment and pipeline, and the bearing structure is unfavorable. The displacement stroke of the product is 200-300mm at most, the constant degree is more than 6%, and the working occasion requiring high-precision and large-stroke constant-force spring support and hanger cannot be met.

Disclosure of Invention

The utility model aims to solve the technical problems and provides the force balance type anti-inclination constant-force spring support and hanger which has the advantages of simple structure, good stability, long service life, large displacement stroke and high precision and can effectively prevent equipment or a pipe bracket from inclining.

The technical scheme includes that the device comprises a fixed frame and a main spring assembly located in the center of the fixed frame, wherein the upper end of the main spring assembly is connected with a supporting pipe assembly through a guide roller assembly; the guide roller assembly comprises a roller frame and guide rollers symmetrically arranged on the left and right of the roller frame; auxiliary spring assemblies are symmetrically arranged on the left side and the right side of the guide roller assembly, and the auxiliary spring assemblies are in contact with the guide rollers on the corresponding side of the guide roller assembly.

The main spring assembly comprises an upper main spring pressing plate, a lower main spring pressing plate, a main spring positioned between the upper main spring pressing plate and the lower main spring pressing plate, and a main spring inner guide pipe sleeved in the main spring, wherein the upper end of the main spring inner guide pipe is connected with the upper main spring pressing plate, the lower end of the main spring inner guide pipe penetrates through a through hole of the lower main spring pressing plate, and the lower main spring pressing plate is fixed on the fixed frame.

The supporting tube component comprises two supporting tubes which are symmetrically arranged on the top surface of the roller frame from left to right.

The top of the fixed frame is provided with a guide bearing seat, the supporting tube penetrates through the guide bearing seat and is connected with the top plate, and a sliding guide ring is arranged between the supporting tube and the guide bearing seat.

The auxiliary spring assembly comprises an auxiliary spring cylinder, an auxiliary spring pressing plate and an auxiliary spring, the bottom of the auxiliary spring is sleeved on the auxiliary spring cylinder, and the top of the auxiliary spring is connected with the auxiliary spring pressing plate; the auxiliary spring pressing plate is hinged with the cam through a connecting piece, the lower end of the cam is installed on the fixed frame through a rotating shaft, and the diameter-changing surface of the cam is in contact with the guide roller on one corresponding side.

The cam is a knife-shaped cam, the back of the knife-shaped cam is hinged with the connecting piece, and the upper section of the front of the knife-shaped cam is a curved surface.

Has the advantages that:

1. the main spring assembly positioned in the center is matched with the auxiliary spring assemblies symmetrically arranged on two sides to exert action, and the guide roller assemblies are used for uniformly transmitting and distributing acting force, so that the resultant force of the main spring assembly and the auxiliary spring assemblies keeps a constant value in the whole stroke range, the supporting stability of the supporting pipe assembly is effectively improved, and the equipment or the pipe bracket is prevented from inclining;

2. the guide bearing seat is matched with the sliding guide ring, so that the functions of guiding the supporting tube and reducing friction are met, and the use stability is improved.

3. The auxiliary spring assembly adopts the special-shaped knife-shaped cam, so that the local arrangement space is saved, and the force of the main spring and the auxiliary spring in the vertical direction can show linear change through the curve surface on the front surface of the knife-shaped cam. And the auxiliary spring components which are symmetrically arranged can ensure that the stress of the knife-shaped cam is more uniform and stable during a large stroke, thereby achieving the effect that the constant precision is within 5 percent.

4. The utility model has simple structure, good stability, long service life, high precision and large displacement stroke, effectively prevents the inclination of equipment or a pipe bracket, and is suitable for being used as a support and hanger of various pipelines or equipment.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic structural view of a guide roller assembly according to the present invention.

Fig. 3 is a partial structural schematic view of a guide bearing seat and a sliding guide ring.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a working principle diagram of the present invention.

1-top plate 2-support tube 3-guide bearing seat 4-sliding guide ring 7-guide roller 8-fixed frame 9-guide roller component 10-upper main spring pressing plate 11-main spring 12-auxiliary spring pressing plate 13-auxiliary spring cylinder 14-lower main spring pressing plate 15-connecting piece 16-auxiliary spring rotating shaft 17-auxiliary spring 18-knife-shaped cam 19-main spring inner guide tube 20-rotating shaft 21-roller frame 22-adjusting bolt.

Detailed Description

The utility model is further explained below with reference to the drawings in which:

referring to fig. 1, the present invention comprises a fixed frame 8, a main spring assembly located at the center position in the fixed frame 8, wherein the upper end of the main spring assembly is connected with a supporting tube through a guide roller assembly 9; referring to fig. 2, the guide roller assembly 9 includes a roller frame 21, and guide rollers 7 symmetrically arranged on the roller frame 21; auxiliary spring assemblies are symmetrically arranged on the left side and the right side of the guide roller assembly and are in contact with the guide rollers 7 on the corresponding side of the guide roller assembly; when an external load acts on the top plate 1, the guide roller assembly 9 drives the main spring assembly to be stressed and compressed, and the compression direction of the main spring assembly and the external load are on the same axis;

the main spring assembly comprises an upper main spring pressing plate 10, a lower main spring pressing plate 14, a main spring 11 located between the upper main spring pressing plate 10 and the lower main spring pressing plate 14, and a main spring inner guide pipe 19 sleeved in the main spring 11, wherein the upper end of the main spring inner guide pipe 19 is connected with the upper main spring pressing plate 10, the lower end of the main spring inner guide pipe passes through a through hole of the lower main spring pressing plate 14, and the lower main spring pressing plate 14 is fixed on the fixed frame 8 through an adjusting bolt 22.

Referring to fig. 3 and 4, the preferred support tube assembly comprises two support tubes 2 symmetrically arranged at left and right sides of the top surface of the roller frame 21, and the stress surface of the upper top bearing plate 1 can be increased by adopting a double support tube form, so that the load can be better applied to the guide roller assembly 7 and the lower main spring 11. Meanwhile, the double columns can better prevent the inclination of the load tube and the load eccentricity possibly caused by horizontal displacement and load; the top of the fixed frame 8 is provided with a guide bearing seat 3, the support tube 2 penetrates through the guide bearing seat 3 to be connected with the top plate 1, and a sliding guide ring 4 is arranged between the support tube 2 and the guide bearing seat 3.

Further, the auxiliary spring assembly comprises an auxiliary spring cylinder 13, an auxiliary spring pressing plate 12 and an auxiliary spring 17, wherein the bottom of the auxiliary spring cylinder 13 is sleeved with the auxiliary spring, and the top of the auxiliary spring cylinder is connected with the auxiliary spring pressing plate 12; the auxiliary spring pressing plate 12 is hinged with the back of a knife-shaped cam 18 through a connecting piece 15, the lower end of the knife-shaped cam 18 is installed on a fixed frame 8 through a rotating shaft 20, and the curve surface of the upper section of the front surface is contacted with the guide roller 7 on the corresponding side; preferably, the connecting member 15 may be a bolt, one end of which is fixedly connected to the auxiliary spring pressing plate 12 through a nut, and the other end of which is hinged to the back of the knife cam 18 through a rotating shaft. The guide roller 7 moves up and down along the curved surface of the knife cam 18, presses the main spring 11, and at the same time, at different positions of the movement, the knife cam 18 swings by a certain angle around the rotating shaft 20, and the auxiliary springs 17 on both sides are compressed or stretched, at this time, the force of the main spring 11 and the auxiliary springs 17 in the vertical direction changes linearly due to the particularity of the curved surface of the knife cam 18.

As shown in fig. 5, according to the force parallelogram principle, the force of the main spring 11 acting on the guide roller assembly 9 through the main spring pressing plate 10 is F1, the resultant force of the auxiliary springs 17 on both sides acting on the guide roller assembly 9 in the vertical direction through the guide roller 7 is F2, as the guide roller 7 moves up and down along the curved surface of the knife cam 18, the magnitudes of F1 and F2 change linearly with the stroke, but the resultant force F of F1 and F2 maintains a constant value throughout the stroke range. Specifically, when the guide roller 7 moves from top to bottom from the starting point of the self-travel, the force F1 of the main spring 11 is continuously increased and the direction is upward, and the resultant force F2 of the pair of auxiliary springs 17 is continuously decreased and the direction is also upward; the guide roller 7 continues to move downwards, when the position reaches 50% of the full stroke, the resultant force F2 of the pair of auxiliary springs 17 is 0, only the main spring 11 bears the external force load, the main spring force F1 has the same value as F, and the direction is upward; the guide roller 7 continues to move downwards again, the main spring force F1 continues to increase continuously, the direction is upward, the resultant force F2 of the pair of auxiliary springs gradually increases, the direction is downward, and the resultant force of F1 and F2 is still the same as that of F. The resultant force of F1 and F2, i.e., the force F output outward by guide roller assembly 9, remains constant throughout the entire range of travel.

Claims

1. A force balance type anti-tilt constant force spring support and hanger comprises a fixed frame and a main spring assembly located in the center of the fixed frame, wherein the upper end of the main spring assembly is connected with a top plate through a support tube assembly; the guide roller assembly comprises a roller frame and guide rollers symmetrically arranged on the left and right of the roller frame; auxiliary spring assemblies are symmetrically arranged on the left side and the right side of the guide roller assembly, and the auxiliary spring assemblies are in contact with the guide rollers on the corresponding side of the guide roller assembly.

2. The force-balanced anti-tilt constant force spring hanger according to claim 1, wherein the main spring assembly comprises an upper main spring pressing plate, a lower main spring pressing plate, a main spring located between the upper main spring pressing plate and the lower main spring pressing plate, and a main spring inner guide tube sleeved in the main spring, wherein the upper end of the main spring inner guide tube is connected with the upper main spring pressing plate, the lower end of the main spring inner guide tube passes through a through hole of the lower main spring pressing plate, and the lower main spring pressing plate is fixed on the fixed frame.

3. The force-balanced anti-tilt constant-force spring support and hanger of claim 1, wherein the support tube assembly comprises two support tubes symmetrically arranged on the top surface of the roller frame.

4. The force-balanced anti-tilt constant-force spring support and hanger of claim 3, wherein a guide bearing seat is provided at the top of the fixed frame, the support tube passes through the guide bearing seat and is connected with the top plate, and a sliding guide ring is provided between the support tube and the guide bearing seat.

5. The force-balanced anti-tilt constant-force spring support and hanger of any one of claims 1-4, wherein the auxiliary spring assembly comprises an auxiliary spring cylinder and an auxiliary spring pressing plate, and an auxiliary spring with a bottom part sleeved on the auxiliary spring cylinder and a top part connected with the auxiliary spring pressing plate; the auxiliary spring pressing plate is hinged with the cam through a connecting piece, the lower end of the cam is installed on the fixed frame through a rotating shaft, and the diameter-changing surface of the cam is in contact with the guide roller on one corresponding side.

6. The force-balancing anti-tilt constant force spring hanger according to claim 5, wherein the cam is a knife cam, the back of the knife cam is hinged to the connecting member, and the upper section of the front face is a curved surface.