A constant force spring suspension device for pipe support

Abstract

The present invention relates to the technical field of pipeline support, and discloses a constant force spring suspension device for pipeline support, including a housing. Two mounting columns are provided at the bottom of the housing, and an ear plate is movably arranged inside the housing. During use, when the compensation spring is in an abnormal state and the elastic acting force decreases or disappears, the movement change of the associated components will trigger the induction mechanism. The movement of the sliding shaft drives the lifting block, and then the sliding block is moved through the linkage connecting rod. The clamping block is clamped with the clamping groove, and at the same time, the clamping block is attached to the square inductor, transmitting an electrical signal to the wireless module and the indicator light, timely reminding the staff that the equipment has a malfunction, so as to quickly take maintenance measures. And when the compensation spring fails, the backup spring provides a supporting force to the square block. Through the connection of the first connecting rod and the second connecting rod, the sliding block is supported, and then a synchronous supporting force is provided for the cam, so that the arc inductor is always attached to the roller, maintaining the moment balance on both sides.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe support, and more particularly to a constant force spring suspension device for pipe support. Background Art

[0002] The constant force spring hanger is designed based on the principle of moment balance. Under the permitted load displacement, the load moment and the spring moment always remain balanced. For pipes and equipment supported by constant hangers, a constant supporting force can be provided during displacement, thus not bringing additional stress to the pipe equipment.

[0003] When the existing constant force spring hangers are in use, the supporting effect is achieved through the elastic action of the springs in the vertical direction, and two compensating springs are arranged in the horizontal direction to offset the horizontal acting force. However, after long-term use, the compensating springs will break and be damaged, resulting in weakened elastic action. Due to the imbalance of moments on both sides, it is extremely easy to cause damage to the pipes, increasing the difficulty of repair work. If the staff fails to discover it in time, the losses caused are likely to expand further. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a constant force spring suspension device for pipe support to solve the problems existing in the above-mentioned background art.

[0005] The present invention provides the following technical solutions: A constant force spring suspension device for pipe support includes a housing. Two mounting columns are arranged at the bottom of the housing. An ear plate is movably arranged in the housing. Pin holes are respectively opened on the opposite inner walls of the ear plate. A pin shaft is slidably installed in the two pin holes together. Positioning mechanisms are arranged at both ends of the pin shaft, and the positioning mechanisms are used to fix the position of the ear plate. A sliding hole is opened at the top of the housing. A steel pipe is slidably installed in the sliding hole. Connecting holes are opened on the circumferential inner wall of the steel pipe. The pin shaft is slidably installed in the connecting hole. Supporting mechanisms are arranged at both ends of the steel pipe together. Two mounting holes are respectively opened on the opposite inner walls of the housing. Two pin posts are fixedly installed in the four mounting holes respectively. Cams are rotatably sleeved on the two pin posts. Compensating mechanisms are arranged on the circumferential outer walls of the two cams. The two compensating mechanisms are both adapted to the ear plate, and the two compensating mechanisms are symmetrically arranged on both sides of the ear plate. Two spare mechanisms are arranged on the inner wall of the housing, and the two spare mechanisms are respectively connected to the circumferential outer walls of the two cams.

[0006] Further, the positioning mechanism includes two positioning toothed plates, both of the two positioning toothed plates are fixedly installed on the side of the housing, a positioning sliding hole is formed in the inner wall of the side of the housing, one end of the pin shaft extends outside the positioning sliding hole and is sleeved with a positioning block, tooth teeth are arranged on both side parts of the positioning block, a threaded groove is formed in the end of the pin shaft, a positioning bolt is threadedly installed in the threaded groove, two roller sleeves are fixedly arranged on the opposite inner walls of the ear plate, rollers are rotatably installed on the circumferential outer walls of the two roller sleeves, and the two rollers are respectively attached to the circumferential outer walls of the two cams.

[0007] Further, the support mechanism includes a top plate, a screw sleeve is fixedly installed at the top end of the steel pipe, a threaded pipe is threadedly installed in the screw sleeve, the bottom end of the threaded pipe extends into the steel pipe, and the top end of the threaded pipe is fixedly connected to the top plate.

[0008] Further, the support mechanism further includes a main spring, two lower cross beams are fixedly installed on the opposite inner walls of the housing, threaded holes are formed in the bottoms of the two lower cross beams, the two threaded holes are arranged staggeredly, first connecting bolts are threadedly installed in the two threaded holes, a base bottom plate is fixedly sleeved on the two first connecting bolts together, a base cylinder is fixedly installed on the top of the base bottom plate, avoidance holes are formed in the bottoms of the ear plate and the base bottom plate, a positioning sleeve is fixedly installed at the bottom of the ear plate, the circumferential outer wall of the steel pipe is attached to the circumferential inner wall of the positioning sleeve, the main spring is sleeved on the circumferential outer wall of the steel pipe, the top end of the main spring is fixedly installed at the bottom of the ear plate, and the bottom end of the main spring extends into the base cylinder and is fixedly installed on the top of the base bottom plate.

[0009] Further, the compensation mechanism includes a compensation spring, an installation hole is formed in the side of the housing, a compensation spring seat is slidably installed in the installation hole, the compensation spring is sleeved on the circumferential outer wall of the compensation spring seat, one end of the compensation spring is fixedly installed on the side part of the compensation spring seat, the other end of the compensation spring is fixedly installed on the inner wall of the side of the housing, a screw hole is formed in the inner wall of the end of the compensation spring seat, a second connecting bolt is threadedly installed in the screw hole, a semi-circular groove is formed in the circumferential outer wall of the cam, an anti-friction sheet is fixedly installed in the semi-circular groove, a small shaft is rotatably installed in the circumferential inner wall of the anti-friction sheet, a connecting screw groove is formed in the circumferential outer wall of the small shaft, and the end of the second connecting bolt is threadedly connected to the connecting screw groove.

[0010] Further, the backup mechanism includes an arc-shaped inductor. An arc-shaped groove is formed in the arc-shaped surface of the cam. The arc-shaped inductor is slidably arranged in the arc-shaped groove. Two compression components are arranged on the outer wall of the circumference of the arc-shaped inductor. The compression component includes a compression spring. A square cavity is formed in the cam. A first through hole is formed in the inner wall of the side of the square cavity. A sliding shaft is slidably installed in the first through hole. One end of the sliding shaft is fixedly connected to the outer wall of the circumference of the arc-shaped inductor. A square plate is fixedly sleeved on the outer wall of the circumference of the sliding shaft. The compression spring is sleeved on the outer wall of the circumference of the sliding shaft. One end of the compression spring is fixedly connected to the side of the square plate. The other end of the compression spring is fixedly connected to the inner wall of the side of the square cavity. A wireless module is fixedly installed on the inner wall of the side of the housing. Indicators are arranged on both sides of the housing.

[0011] Further, the backup mechanism further includes a rectangular frame. The rectangular frame is fixedly installed on the outer wall of the circumference of the cam. A lifting groove is formed in the outer wall of the circumference of the cam. A lifting block is slidably installed in the lifting groove. A second through hole is formed in the inner wall of the side of the lifting groove. The end of one of the sliding shafts extends outside the second through hole and is fixedly connected to the side of the lifting block. A sliding block is slidably installed in the rectangular frame. Square grooves are formed in both side parts of the sliding block. Guide shafts are fixedly installed on the inner walls of the sides of the two square grooves. Clamping blocks are slidably installed on the outer walls of the circumferences of the two guide shafts. Clamping springs are sleeved on the outer walls of the circumferences of the two guide shafts. Card slots are formed in the opposite inner walls of the rectangular frame. Extrusion holes are formed in the inner walls of the sides of the two card slots. Extrusion shafts are slidably installed in the two extrusion holes. Square inductors are fixedly installed at the ends of the two extrusion shafts close to each other. Pressing plates are fixedly installed at the ends of the two extrusion shafts away from each other. A linkage connecting rod is rotatably installed on the side of the sliding block.

[0012] Further, the backup mechanism further includes a mounting frame. A circular hole is formed in the inner wall of the side of the mounting frame. An electric telescopic rod is fixedly installed in the circular hole. The output end of the electric telescopic rod extends into the mounting frame and is fixedly connected to a square block. A backup spring is fixedly installed on the side of the square block. One end of the backup spring is installed on the inner wall of the side of the mounting frame. The square block and the sliding block are connected by a telescopic component.

[0013] Furthermore, the telescopic assembly includes a first connecting rod and a second connecting rod. One end of the first connecting rod is rotatably installed on the side of the square block, and a telescopic groove is formed at the other end of the first connecting rod. A plurality of circular card slots are formed on the opposite inner walls of the telescopic groove. One end of the second connecting rod is rotatably installed on the side of the sliding block, and the other end of the second connecting rod is slidably installed in the telescopic groove. A limiting cavity is formed in the second connecting rod, a sliding hole is formed in the bottom inner wall of the limiting cavity, a limiting shaft is slidably installed in the sliding hole, one end of the limiting shaft extends into the limiting cavity and is fixedly provided with a connecting slide plate, a top spring is sleeved on the circumferential outer wall of the limiting shaft, an extrusion groove is formed in the side of the sliding block, a rectangular hole is formed in the top inner wall of the extrusion groove, a limiting column is fixedly installed on the side of the rectangular frame, the other end of the limiting column extends into the extrusion groove, and the bottom end of the limiting shaft extends into the rectangular hole and fits with the side of the limiting column.

[0014] Furthermore, the telescopic assembly further includes a square sliding rod. A square sliding hole is formed in the top inner wall of the limiting cavity, the square sliding rod is slidably installed in the square sliding hole, one end of the square sliding rod extends into the limiting cavity and is fixedly connected to the side of the connecting slide plate, the other end of the square sliding rod extends into the telescopic groove and is rotatably installed with two third connecting rods. Two rectangular grooves are formed in the side of the second connecting rod, guiding grooves are formed on the opposite inner walls of the two rectangular grooves, four limiting blocks are slidably installed in the four guiding grooves, two rectangular slide plates are fixedly installed on the opposite inner walls of the four limiting blocks respectively, the other ends of the two third connecting rods are respectively rotatably installed on the sides of the two rectangular slide plates, and clamping columns are fixedly installed on the sides of the two rectangular slide plates away from each other.

[0015] The beneficial effects of the present invention compared with the prior art are as follows:

[0016] 1. During the long-term operation of the equipment, the compensation spring is prone to abnormal conditions such as fracture and reduced elasticity, which affects the normal operation of the equipment and may cause damage to the pipeline. Through a clever structural design of this mechanism, when the state of the compensation spring is abnormal and the elastic force decreases or disappears, the movement change of the associated components will trigger the induction mechanism. The movement of the sliding shaft drives the lifting block, and then the sliding block is moved through the linkage connecting rod. The clamping block is clamped with the card slot, and at the same time, the clamping block is attached to the square inductor, transmitting an electrical signal to the wireless module and the indicator light, timely reminding the staff that the equipment has a fault, so as to quickly take maintenance measures to avoid the expansion of the fault and ensure the safe operation of the equipment.

[0017] 2. Once an abnormality in the compensation spring is detected, the entire mechanism quickly makes an automatic adjustment. Under the elastic action of the compression spring, the square plate and the sliding shaft move, driving a series of components such as the lifting block and the sliding block to act in coordination. The mutual cooperation of components such as the limit post, the limit shaft, and the connecting slide plate enables the clamping post to be clamped with the circular card slot, fixing the connection state of the first connecting rod and the second connecting rod. This automatic adjustment mechanism can quickly reconstruct the mechanical structure of the equipment when the compensation spring fails, maintain the stable connection of the key components of the equipment, ensure that the equipment can still maintain a certain operating ability under fault conditions, and provide guarantee for the continuous operation of the equipment.

[0018] 3. When the system detects an abnormality in the compensation spring and releases the limit on the relevant components, the spare spring comes into play. The spare spring provides a supporting force to the square block, and through the connection of the first connecting rod and the second connecting rod, supports the sliding block, and further provides a synchronous supporting force to the cam, so that the arc-shaped inductor always fits with the roller, maintaining the torque balance on both sides. This spare support system effectively avoids the phenomenon of pipeline damage caused by the failure of the compensation spring, ensures that the equipment can still operate safely and stably under complex working conditions, greatly improves the reliability and service life of the equipment, and reduces the equipment maintenance cost and the risk of production interruption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of this embodiment;

[0020] Figure 2 is a schematic diagram of the internal structure of the housing in this embodiment;

[0021] Figure 3 is a schematic diagram of the partial structural connection between the steel pipe and the pin shaft in this embodiment;

[0022] Figure 4 is a schematic diagram of the partial structural connection between the base bottom plate and the lower cross beam in this embodiment;

[0023] Figure 5 is a schematic diagram of the partial structural connection between the compensation spring seat and the small shaft in this embodiment;

[0024] Figure 6 is a schematic diagram of the partial structural connection between the ear plate and the pin hole in this embodiment;

[0025] Figure 7 is a schematic diagram of the partial sectional structure of the cam and the rectangular frame in this embodiment;

[0026] Figure 8 is Figure 7 the enlarged structural diagram at A in

[0027] Figure 9 is a schematic diagram of the partial structure of the rectangular frame and the sliding block in this embodiment;

[0028] Figure 10 is Figure 9 Schematic diagram of the enlarged structure at position B in

[0029] Figure 11 Schematic diagram of the partial structures of the first connecting rod and the second connecting rod in this embodiment;

[0030] Figure 12 is Figure 11 Schematic diagram of the enlarged structure at position C in

[0031] Figure 13 Schematic diagram of the enlarged structure of the partial section of the mounting frame in this embodiment.

[0032] Reference numerals are: 1, housing; 2, positioning tooth plate; 3, mounting post; 4, base bottom plate; 5, base cylinder; 6, first connecting bolt; 7, positioning block; 8, positioning bolt; 9, pin post; 10, steel pipe; 11, cam; 12, compensation spring seat; 13, lower cross beam; 14, main spring; 15, threaded pipe; 16, top plate; 17, screw sleeve; 18, pin shaft; 19, wireless module; 20, compensation spring; 21, second connecting bolt; 22, small shaft; 23, ear plate; 24, roller bushing; 25, roller; 26, positioning sleeve; 27, pin hole; 28, first connecting rod; 29, second connecting rod; 30, wear-reducing sheet; 31, arc-shaped inductor; 32, sliding shaft; 33, square plate; 34, compression spring; 35, rectangular frame; 36, lifting block; 37, sliding block; 38, linkage connecting rod; 39, clamping block; 40, clamping spring; 41, extrusion shaft; 42, square inductor; 43, pressing plate; 44, limiting post; 45, limiting shaft; 46, connecting slide plate; 47, ejecting spring; 48, square slide bar; 49, rectangular slide plate; 50, limiting block; 51, third connecting rod; 52, clamping post; 53, circular card slot; 54, mounting frame; 55, square block; 56, spare spring; 57, indicator light; 58, electric telescopic rod. Detailed implementation manners

[0033] The following further describes the present invention with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention necessarily goes beyond these limited embodiments, and for some equivalent replacement schemes or common means, no detailed description will be given herein, but they still fall within the protection scope of this application.

[0034] Figures 1 - 13 is the best embodiment of the present invention. The following further describes the present invention with reference to the attached Figures 1 - 13 drawings.

[0035] Refer to the attached Figures 1 - 13A constant force spring support device for pipe support, comprising a shell 1, two mounting columns 3 are arranged at the bottom of the shell 1, an ear plate 23 is movably arranged in the shell 1, the opposite inner walls of the ear plate 23 are provided with pin holes 27, a pin shaft 18 is slidably installed in the two pin holes 27, and a positioning mechanism is arranged at both ends of the pin shaft 18, and the positioning mechanism is used to fix the position of the ear plate 23, a sliding hole is arranged at the top of the shell 1, a steel pipe 10 is slidably installed in the sliding hole, a connecting hole is arranged on the inner wall of the peripheral side of the steel pipe 10, and the pin shaft 18 slides Installed in the connecting hole, a supporting mechanism is commonly provided at both ends of the steel pipe 10, two mounting holes are provided on the opposite inner walls of the shell 1, two pins 9 are fixedly installed in the four mounting holes, cams 11 are rotatably sleeved on the two pins 9, compensation mechanisms are provided on the peripheral outer walls of the two cams 11, the two compensation mechanisms are adapted to the ear plate 23, the two compensation mechanisms are symmetrically arranged on the two sides of the ear plate 23, and two standby mechanisms are provided on the inner wall of the shell 1, and the two standby mechanisms are respectively connected to the peripheral outer walls of the two cams 11.

[0036] like Figure 1 As shown, the positioning mechanism includes two positioning tooth plates 2, and the two positioning tooth plates 2 are fixedly installed on the side of the shell 1. The inner wall of the side of the shell 1 is provided with a positioning slide hole, one end of the pin shaft 18 extends to the outside of the positioning slide hole and is sleeved with a positioning block 7, and both sides of the positioning block 7 are provided with teeth, and the end of the pin shaft 18 is provided with a threaded groove, and a positioning bolt 8 is threadedly installed in the threaded groove. Two roller sleeves 24 are fixedly provided on the relative inner walls of the ear plate 23, and rollers 25 are rotatably installed on the outer walls of the peripheral sides of the two roller sleeves 24. The two rollers 25 are respectively fitted with the outer walls of the peripheral sides of the two cams 11. In this way, the two positioning tooth plates 2 can be clamped with the positioning block 7 to realize the limiting function of the ear plate 23, effectively prevent the pin shaft 18 from moving, and ensure the stable operation of the mechanism. The pin shaft 18 extends outside the positioning slide hole, which is convenient for installing the positioning block 7, and the position of the positioning block 7 can be quickly adjusted to meet different working scenarios.

[0037] Specifically, after the device is installed, the positions of the ear plate 23, the pin 18, and the steel pipe 10 can be limited by the clamping action of the positioning block 7 and the positioning tooth plate 2, effectively preventing them from being displaced, thereby facilitating the staff to adjust the height of the support mechanism and support the pipeline, and by loosening the positioning bolt 8, the positioning block 7 and the positioning tooth plate 2 can be offset and rotated 90°, thereby releasing the clamping action of the positioning block 7 and the positioning tooth plate 2, and the operation is simple, preventing the positioning tooth plate 2 from being lost.

[0038] like Figure 3As shown in the figure, the support mechanism includes a top plate 16. A screw sleeve 17 is fixedly installed at the top end of the steel pipe 10. A threaded pipe 15 is installed with internal threads in the screw sleeve 17. The bottom end of the threaded pipe 15 extends into the steel pipe 10. The top end of the threaded pipe 15 is fixedly connected to the top plate 16. The support mechanism further includes a main spring 14. Two lower cross beams 13 are fixedly installed on the opposite inner walls of the housing 1. Threaded holes are opened at the bottoms of the two lower cross beams 13. The two threaded holes are arranged staggeredly. First connecting bolts 6 are installed with threads in the two threaded holes. A base bottom plate 4 is fixedly sleeved on the two first connecting bolts 6 together. A base cylinder 5 is fixedly installed on the top of the base bottom plate 4. Avoidance holes are opened at the bottoms of the ear plate 23 and the base bottom plate 4. A positioning sleeve 26 is fixedly installed at the bottom of the ear plate 23. The outer peripheral wall of the steel pipe 10 is in fit with the inner peripheral wall of the positioning sleeve 26. The main spring 14 is sleeved on the outer peripheral wall of the steel pipe 10. The top end of the main spring 14 is fixedly installed at the bottom of the ear plate 23. The bottom end of the main spring 14 extends into the base cylinder 5 and is fixedly installed on the top of the base bottom plate 4. With such a setting, the height of the top plate 16 can be adjusted by the cooperation of the threaded pipe 15 and the screw sleeve 17 to adapt to different support requirements. A stable support structure is constructed through the lower cross beam 13, the first connecting bolt 6 and the base bottom plate 4 to avoid loosening at the bottom and make it difficult to play a good elastic support role. By sleeving the main spring 14 outside the steel pipe 10 and connecting the ear plate 23 and the base bottom plate 4, a buffer and shock absorption effect can be provided, the stability of the mechanism can be enhanced, and the influence of vibration on the equipment can be reduced.

[0039] Specifically, after the device is fixedly installed, by rotating the threaded pipe 15, the top plate 16 can be driven to move upward, so as to achieve the support effect on the pipeline. When the pipeline is displaced, it squeezes the top plate 16 to move downward. Through the connection of the pin shaft 18, the ear plate 23 can be driven to move downward. Since the base bottom plate 4 remains stationary, when the ear plate 23 moves downward, the main spring 14 can be compressed, so that through the elastic action of the main spring 14, a constant support force can be applied to the pipeline, effectively preventing the pipeline from breaking and being damaged.

[0040] Such as Figure 2 and Figure 5As shown in the figure, the compensation mechanism includes a compensation spring 20. An installation hole is provided on the side of the housing 1. A compensation spring seat 12 is slidably installed in the installation hole. The compensation spring 20 is sleeved on the outer wall of the circumference of the compensation spring seat 12. One end of the compensation spring 20 is fixedly installed on the side of the compensation spring seat 12, and the other end of the compensation spring 20 is fixedly installed on the inner wall of the side of the housing 1. A threaded hole is provided on the inner wall of the end of the compensation spring seat 12. A second connecting bolt 21 is threadedly installed in the threaded hole. A semi-circular groove is provided on the outer wall of the circumference of the cam 11. An anti-friction sheet 30 is fixedly installed in the semi-circular groove. A small shaft 22 is rotatably installed on the inner wall of the circumference of the anti-friction sheet 30. A connecting thread groove is provided on the outer wall of the circumference of the small shaft 22. The end of the second connecting bolt 21 is threadedly connected to the connecting thread groove. With such a setting, the cooperation between the compensation spring 20 and the compensation spring seat 12 can effectively compensate for the displacement and force changes during the operation of the mechanism, ensure the operation stability, and the threaded connection between the second connecting bolt 21 and the connecting thread groove of the small shaft 22 on the cam 11 makes the connection of the components firm. The cooperation between the anti-friction sheet 30 and the small shaft 22 reduces the friction loss during rotation and prolongs the service life of the mechanism.

[0041] Specifically, when the ear plate 23 is moving up and down, due to the elastic action of the compensation spring 20, it can squeeze the compensation spring seat 12, the second connecting bolt 21, and the small shaft 22 to squeeze the cam 11, so that the cam 11 is always in contact with the surface of the roller 25, thus playing a constant force support role in the horizontal direction.

[0042] Such as Figure 7As shown in the figure, the backup mechanism includes an arc-shaped inductor 31. An arc-shaped groove is formed on the arc-shaped surface of the cam 11. The arc-shaped inductor 31 is slidably arranged in the arc-shaped groove. Two compression components are arranged on the outer wall of the circumference of the arc-shaped inductor 31. The compression component includes a compression spring 34. A square cavity is formed in the cam 11. A first through hole is formed on the inner wall of the side of the square cavity. A sliding shaft 32 is slidably installed in the first through hole. One end of the sliding shaft 32 is fixedly connected to the outer wall of the circumference of the arc-shaped inductor 31. A square plate 33 is fixedly sleeved on the outer wall of the circumference of the sliding shaft 32. The compression spring 34 is sleeved on the outer wall of the circumference of the sliding shaft 32. One end of the compression spring 34 is fixedly connected to the side of the square plate 33. The other end of the compression spring 34 is fixedly connected to the inner wall of the side of the square cavity. A wireless module 19 is fixedly installed on the inner wall of the side of the housing 1. Specifically, the wireless module 19 is a prior art and can be connected to a remote computer through a network to transmit real-time data for easy monitoring. Its specific working principle will not be elaborated here. Indicator lights 57 are arranged on both side walls of the housing 1. Specifically, the indicator lights 57 can be controlled by a PLC controller. Through the setting of the arc-shaped inductor 31, the contact position between it and the roller 25 can be monitored, so as to accurately sense the motion state of the cam 11, and then monitor and record the displacement of the pipeline. Through the setting of the compression spring 34, when the compensation spring 20 fails, the backup mechanism can be switched in time for elastic compensation to ensure the stable operation of the equipment.

[0043] Specifically, when the compensation spring 20 on one side breaks or is damaged, the extrusion force on the cam 11 will decrease or disappear. At this time, under the elastic action of the two compression springs 34, the arc-shaped inductor 31 can be driven to pop out of the arc-shaped groove.

[0044] Such as Figure 7 And Figure 8As shown, the backup mechanism further includes a rectangular frame 35 which is fixedly installed on the outer wall of the circumference of the cam 11. A lifting groove is provided on the outer wall of the circumference of the cam 11. A lifting block 36 is slidably installed in the lifting groove. A second through hole is provided on the inner wall of the side of the lifting groove. The end of one of the sliding shafts 32 extends outside the second through hole and is fixedly connected to the side of the lifting block 36. A sliding block 37 is slidably installed in the rectangular frame 35. Square grooves are provided on both sides of the sliding block 37. Guide shafts are fixedly installed on the inner walls of the sides of the two square grooves. Clamping blocks 39 are slidably installed on the outer walls of the circumferences of the two guide shafts. Clamping springs 40 are sleeved on the outer walls of the circumferences of the two guide shafts. Clamping grooves are provided on the opposite inner walls of the rectangular frame 35. Pressing holes are provided on the inner walls of the sides of the two clamping grooves. Pressing shafts 41 are slidably installed in the two pressing holes. Square sensors 42 are fixedly installed on the ends of the two pressing shafts 41 close to each other. Specifically, the arc sensor 31 and the square sensor 42 are both prior arts and can be controlled by a PLC controller. Their specific working principles will not be elaborated here. Pressing plates 43 are fixedly installed on the ends of the two pressing shafts 41 away from each other. A linkage connecting rod 38 is rotatably installed on the side of the sliding block 37. With such a setting, through the connection of the lifting block 36, the linkage connecting rod 38 and the sliding block 37, it can be ensured that in the normal working state, the sliding block 37 always remains stationary, so that the backup mechanism remains in a constant state and no supporting force is generated.

[0045] Specifically, by connecting the lifting block 36 with one of the sliding shafts 32, when the arc sensor 31 is located in the arc groove, the lifting block 36 can always remain stationary. Thus, through the connection of the linkage connecting rod 38, the sliding block 37 is limited, so that the backup mechanism is in a non-working state. Through the elastic action of the clamping spring 40, when the sliding block 37 moves to an appropriate position, the clamping block 39 can be driven to move and be clamped with the clamping groove, so as to limit the sliding block 37 and contact with the two square sensors 42, and transmit electrical signals to other components.

[0046] As Figure 13 As shown, the backup mechanism further includes a mounting frame 54. A circular hole is provided on the inner wall of the side of the mounting frame 54. An electric telescopic rod 58 is fixedly installed in the circular hole. Specifically, the electric telescopic rod 58 can be controlled by a PLC controller. The movable end of the electric telescopic rod 58 extends into the mounting frame 54 and is fixedly connected to a square block 55. A backup spring 56 is fixedly installed on the side of the square block 55. One end of the backup spring 56 is fixed on the inner wall of the side of the mounting frame 54. The square block 55 and the sliding block 37 are connected by a telescopic assembly. Through the setting of the electric telescopic rod 58, when the compensation spring 20 is in a normal state, the square block 55 can always remain stationary, avoiding the backup spring 56 providing a certain supporting force.

[0047] Specifically, when the compensation spring 20 breaks or is damaged, one of the square sensors 42 transmits an electrical signal to the electric telescopic rod 58 to keep it in a follow-up state, thereby releasing the limit on the square block 55, so that the elastic effect of the spare spring 56 can be transmitted to the cam 11 through the telescopic assembly.

[0048] As Figure 11 and Figure 12 shown, the telescopic assembly includes a first connecting rod 28 and a second connecting rod 29. One end of the first connecting rod 28 is rotatably installed on the side of the square block 55. The other end of the first connecting rod 28 is provided with a telescopic groove. A plurality of circular card slots 53 are opened on the opposite inner walls of the telescopic groove. One end of the second connecting rod 29 is rotatably installed on the side of the sliding block 37. The other end of the second connecting rod 29 is slidably installed in the telescopic groove. A limiting cavity is opened in the second connecting rod 29. A sliding hole is opened on the bottom inner wall of the limiting cavity. A limiting shaft 45 is slidably installed in the sliding hole. One end of the limiting shaft 45 extends into the limiting cavity and is fixedly provided with a connecting slide plate 46. A jacking spring 47 is sleeved on the peripheral outer wall of the limiting shaft 45. An extrusion groove is opened on the side of the sliding block 37. A rectangular hole is opened on the top inner wall of the extrusion groove. A limiting column 44 is fixedly installed on the side of the rectangular frame 35. The other end of the limiting column 44 extends into the extrusion groove. The bottom end of the limiting shaft 45 extends into the rectangular hole and abuts against the side of the limiting column 44. Through the elastic effect of the jacking spring 47, when the sliding block 37 moves, the limit of the limiting column 44 on the limiting shaft 45 can be released, so that the limiting shaft 45 moves synchronously with the connecting slide plate 46 under the action of the jacking spring 47. The telescopic assembly further includes a square sliding rod 48. A square sliding hole is opened on the top inner wall of the limiting cavity. The square sliding rod 48 is slidably installed in the square sliding hole. One end of the square sliding rod 48 extends into the limiting cavity and is fixedly connected to the side of the connecting slide plate 46. The other end of the square sliding rod 48 extends into the telescopic groove and is rotatably installed with two third connecting rods 51. Two rectangular grooves are opened on the side of the second connecting rod 29. Guide grooves are opened on the opposite inner walls of the two rectangular grooves. Four limiting blocks 50 are slidably installed in the four guide grooves. Two rectangular slide plates 49 are fixedly installed on the opposite inner walls of the four limiting blocks 50 respectively. The other ends of the two third connecting rods 51 are respectively rotatably installed on the sides of the two rectangular slide plates 49. Clamping columns 52 are fixedly installed on the sides of the two rectangular slide plates 49 away from each other. Through the clamping of the two clamping columns 52 and the circular card slots 53, the first connecting rod 28 and the second connecting rod 29 can be fixedly connected, so that it is convenient for the spare spring 56 to play a supporting role.

[0049] Specifically, when the sliding block 37 moves horizontally, the limit post 44 remains stationary. At this time, under the elastic action of the ejecting spring 47, the connecting slide plate 46, the limit shaft 45, and the square slide bar 48 are driven to move synchronously. Under the action of the two third connecting rods 51, the two rectangular slide plates 49 and the two clamping posts 52 are driven to move away from each other synchronously, so as to realize the clamping action with the circular clamping groove 53. This setting can make the first connecting rod 28 and the second connecting rod 29 fixedly connected, which is convenient for supporting the cam 11, so as to realize the constant force support function when the compensation spring 20 is damaged.

[0050] The working principle and usage process of the present invention: When in use, first install the device to a suitable position through the mounting post 3, and then rotate the threaded pipe 15 to drive the top plate 16 to move upward to support the pipeline until the positioning tooth plate 2 becomes loose and can be freely removed. Before the device runs, rotate the positioning bolt 8, and after the positioning tooth plate 2 becomes loose, pull it out and rotate it by ninety degrees to release its clamping state. During the operation stage of the equipment, the pipeline generates displacement due to thermal expansion. While the support absorbs the vertical displacement, it applies a constant support force to the pipeline, avoiding the generation of additional stress in the working state of the pipeline and thus protecting the safe operation of the entire system.

[0051] When the support absorbs the force in the vertical direction, the ear plate 23 will undergo vertical displacement. At this time, due to the elastic action of the two compensation springs 20, the two compensation spring seats 12, the two second connecting bolts 21, and the two small shafts 22 can be driven to move towards or away from each other synchronously, so that the two cams 11 are always in contact with the rollers 25, thereby absorbing the force in the horizontal direction and providing a better support effect for the pipeline.

[0052] After long-term use, the compensation spring 20 may break, be damaged, or have reduced elasticity, resulting in different elastic forces received by the two cams 11, making it difficult to absorb the force in the horizontal direction and unable to provide a constant support force, which is extremely likely to cause damage to the pipeline. When the compensation spring 20 shows abnormal phenomena, its elastic force decreases or disappears. When the ear plate 23 moves up and down, due to the abnormal state of the compensation spring 20, the cam 11 connected to it cannot remain in contact with the roller 25. At this time, under the elastic action of the two compression springs 34, the two square plates 33 and the two slide shafts 32 are driven to move synchronously towards the arc-shaped inductor 31.

[0053]

[0054] When one of the sliding shafts 32 moves, it drives the lifting block 36 to move synchronously into the lifting groove. At this time, under the connection of the linkage connecting rod 38, it can drive the sliding block 37 to move horizontally within the rectangular frame 35. When the sliding block 37 moves to an appropriate position, under the elastic action of the two clamping springs 40, it can drive the two clamping blocks 39 to move away from each other synchronously, realizing the clamping function with the two clamping grooves. And by the clamping block 39 being in contact with the square inductor 42, one of the square inductors 42 transmits an electrical signal to the wireless module 19 and the indicator light 57 to give a prompt to the staff, and the other square inductor 42 transmits an electrical signal to the electric telescopic rod 58 to make it in a follow-up state and release its limit on the square block 55.

[0055] When the sliding block 37 moves horizontally, the limit post 44 remains stationary. At this time, the limiting effect on the limit shaft 45 disappears. Under the elastic action of the ejecting spring 47, the limit shaft 45 moves synchronously with the connecting slide plate 46. When the connecting slide plate 46 moves, it drives the square slide rod 48 to move synchronously. Under the connection of the two third connecting rods 51, it drives the two rectangular slide plates 49 and the two clamping columns 52 to move away from each other synchronously, so that the two clamping columns 52 are synchronously clamped with two of the circular clamping grooves 53, so that the first connecting rod 28 and the second connecting rod 29 are kept in a fixed connection state, facilitating the provision of a stable support effect.

[0056] After the limit on the square block 55 is released, under the elastic action of the spare spring 56, it can provide a supporting force for the square block 55. Thus, through the connection of the first connecting rod 28 and the second connecting rod 29, it supports the sliding block 37, and thus provides a synchronous supporting force for the cam 11, so that the arc inductor 31 can always be in contact with the surface of the roller 25, making the torques on both sides balanced and avoiding the phenomenon of pipeline damage.

[0057] The above is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A constant force spring suspension device for pipe support, comprising a housing (1), and two mounting posts (3) are arranged at the bottom of the housing (1), characterized in that: An ear plate (23) is movably arranged inside the housing (1). Pin holes (27) are formed in the opposite inner walls of the ear plate (23). A pin shaft (18) is slidably installed in the two pin holes (27) together. Positioning mechanisms are arranged at both ends of the pin shaft (18). The positioning mechanisms are used to fix the position of the ear plate (23). A sliding hole is formed in the top of the housing (1). A steel pipe (10) is slidably installed in the sliding hole. Connecting holes are formed in the inner wall of the circumferential side of the steel pipe (10). The pin shaft (18) is slidably installed in the connecting holes. Support mechanisms are arranged at both ends of the steel pipe (10) together. Two installation holes are formed in the opposite inner walls of the housing (1). Two pin posts (9) are fixedly installed in the four installation holes respectively. Cams (11) are rotatably sleeved on the two pin posts (9). Compensation mechanisms are arranged on the outer walls of the circumferential sides of the two cams (11). The two compensation mechanisms are both adapted to the ear plate (23). The two compensation mechanisms are symmetrically arranged on both sides of the ear plate (23). Two standby mechanisms are arranged on the inner wall of the housing (1). The two standby mechanisms are respectively connected to the outer walls of the circumferential sides of the two cams (11); The positioning mechanism includes two positioning toothed plates (2). The two positioning toothed plates (2) are both fixedly installed on the side of the housing (1). A positioning sliding hole is formed in the inner wall of the side of the housing (1). One end of the pin shaft (18) extends outside the positioning sliding hole and is sleeved with a positioning block (7). Tooth teeth are arranged on both sides of the positioning block (7). A threaded groove is formed at the end of the pin shaft (18). A positioning bolt (8) is threadedly installed in the threaded groove. Two roller sleeves (24) are fixedly arranged on the opposite inner walls of the ear plate (23). Rollers (25) are rotatably installed on the outer walls of the circumferential sides of the two roller sleeves (24). The two rollers (25) are respectively attached to the outer walls of the circumferential sides of the two cams (11); The standby mechanism includes an arc-shaped inductor (31). An arc-shaped groove is formed in the arc-shaped surface of the cam (11). The arc-shaped inductor (31) is slidably arranged in the arc-shaped groove. Two compression components are arranged on the outer wall of the circumferential side of the arc-shaped inductor (31). The compression component includes a compression spring (34). A square cavity is formed in the cam (11). A first through hole is formed in the inner wall of the side of the square cavity. A sliding shaft (32) is slidably installed in the first through hole. One end of the sliding shaft (32) is fixedly connected to the outer wall of the circumferential side of the arc-shaped inductor (31). A square plate (33) is fixedly sleeved on the outer wall of the circumferential side of the sliding shaft (32). The compression spring (34) is sleeved on the outer wall of the circumferential side of the sliding shaft (32). One end of the compression spring (34) is fixedly connected to the side of the square plate (33). The other end of the compression spring (34) is fixedly connected to the inner wall of the side of the square cavity. A wireless module (19) is fixedly installed on the inner wall of the side of the housing (1). Indicator lights (57) are arranged on both sides of the housing (1); The spare mechanism further includes a rectangular frame (35). The rectangular frame (35) is fixedly installed on the circumferential outer wall of the cam (11). A lifting groove is formed in the circumferential outer wall of the cam (11). A lifting block (36) is slidably installed in the lifting groove. A second through hole is formed in the inner wall of the side of the lifting groove. The end of one of the sliding shafts (32) extends outside the second through hole and is fixedly connected to the side of the lifting block (36). A sliding block (37) is slidably installed in the rectangular frame (35). Square grooves are formed in both side portions of the sliding block (37). Guide shafts are fixedly installed on the inner walls of both sides of the two square grooves. Clamping blocks (39) are slidably installed on the circumferential outer walls of the two guide shafts. Clamping springs (40) are sleeved on the circumferential outer walls of the two guide shafts. Slots are formed in the opposite inner walls of the rectangular frame (35). Pressing holes are formed in the inner walls of both sides of the two slots. Pressing shafts (41) are slidably installed in the two pressing holes. Square sensors (42) are fixedly installed at the ends of the two pressing shafts (41) close to each other. Pressing plates (43) are fixedly installed at the ends of the two pressing shafts (41) away from each other. A linkage connecting rod (38) is rotatably installed on the side of the sliding block (37).

2. The constant force spring suspension device for pipe support according to claim 1, characterized in that: The support mechanism includes a top plate (16). A screw sleeve (17) is fixedly installed at the top end of the steel pipe (10). A threaded pipe (15) is installed in the screw sleeve (17) by thread. The bottom end of the threaded pipe (15) extends into the steel pipe (10). The top end of the threaded pipe (15) is fixedly connected to the top plate (16).

3. The constant force spring suspension device for pipeline support according to claim 1, characterized in that: The support mechanism further includes a main spring (14). Two lower cross beams (13) are fixedly installed on the opposite inner walls of the housing (1). Threaded holes are formed in the bottoms of the two lower cross beams (13). The two threaded holes are arranged staggeredly. First connecting bolts (6) are installed in the two threaded holes by thread. A base bottom plate (4) is fixedly sleeved on the two first connecting bolts (6). A base cylinder (5) is fixedly installed on the top of the base bottom plate (4). Avoidance holes are formed in the bottoms of the ear plate (23) and the base bottom plate (4). A positioning sleeve (26) is fixedly installed at the bottom of the ear plate (23). The circumferential outer wall of the steel pipe (10) is in fit with the circumferential inner wall of the positioning sleeve (26). The main spring (14) is sleeved on the circumferential outer wall of the steel pipe (10). The top end of the main spring (14) is fixedly installed at the bottom of the ear plate (23). The bottom end of the main spring (14) extends into the base cylinder (5) and is fixedly installed on the top of the base bottom plate (4).

4. The constant force spring suspension device for pipeline support according to claim 1, characterized in that: The compensation mechanism includes a compensation spring (20). An installation hole is formed in the side of the housing (1). A compensation spring seat (12) is slidably installed in the installation hole. The compensation spring (20) is sleeved on the outer wall of the circumference of the compensation spring seat (12). One end of the compensation spring (20) is fixedly installed on the side of the compensation spring seat (12), and the other end of the compensation spring (20) is fixedly installed on the inner wall of the side of the housing (1). A screw hole is formed in the inner wall of the end of the compensation spring seat (12). A second connecting bolt (21) is threadedly installed in the screw hole. A semi-circular groove is formed in the outer wall of the circumference of the cam (11). An anti-friction plate (30) is fixedly installed in the semi-circular groove. A small shaft (22) is rotatably installed in the inner wall of the circumference of the anti-friction plate (30). A connecting screw groove is formed in the outer wall of the circumference of the small shaft (22). The end of the second connecting bolt (21) is threadedly connected to the connecting screw groove.

5. The constant force spring suspension device for pipe support according to claim 1, characterized in that: The standby mechanism further includes an installation frame (54). A circular hole is formed in the inner wall of the side of the installation frame (54). An electric telescopic rod (58) is fixedly installed in the circular hole. The output end of the electric telescopic rod (58) extends into the installation frame (54) and is fixedly connected to a square block (55). A standby spring (56) is fixedly installed on the side of the square block (55). One end of the standby spring (56) is installed on the inner wall of the side of the installation frame (54). The square block (55) and the sliding block (37) are connected by a telescopic assembly.

6. The constant force spring suspension device for pipeline support according to claim 5, characterized in that: The telescopic assembly includes a first connecting rod (28) and a second connecting rod (29). One end of the first connecting rod (28) is rotatably installed on the side of the square block (55). An expansion slot is formed at the other end of the first connecting rod (28). A plurality of circular clamping grooves (53) are formed in the opposite inner walls of the expansion slot. One end of the second connecting rod (29) is rotatably installed on the side of the sliding block (37). The other end of the second connecting rod (29) is slidably installed in the expansion slot. A limiting cavity is formed in the second connecting rod (29). A sliding hole is formed in the bottom inner wall of the limiting cavity. A limiting shaft (45) is slidably installed in the sliding hole. One end of the limiting shaft (45) extends into the limiting cavity and is fixedly provided with a connecting sliding plate (46). A top spring (47) is sleeved on the outer wall of the circumference of the limiting shaft (45). An extrusion groove is formed in the side of the sliding block (37). A rectangular hole is formed in the top inner wall of the extrusion groove. A limiting column (44) is fixedly installed on the side of the rectangular frame (35). The other end of the limiting column (44) extends into the extrusion groove. The bottom end of the limiting shaft (45) extends into the rectangular hole and is attached to the side of the limiting column (44).

7. The constant force spring suspension device for pipe support according to claim 6, characterized in that: The telescopic assembly further includes a square sliding rod (48). A square sliding hole is formed in the top inner wall of the limiting cavity. The square sliding rod (48) is slidably installed in the square sliding hole. One end of the square sliding rod (48) extends into the limiting cavity and is fixedly connected to the side of the connecting sliding plate (46). The other end of the square sliding rod (48) extends into the telescopic groove and is rotatably installed with two third connecting rods (51). Two rectangular grooves are formed in the side of the second connecting rod (29). Guide grooves are formed in the opposite inner walls of the two rectangular grooves. Limiting blocks (50) are slidably installed in the four guide grooves. Two rectangular sliding plates (49) are fixedly installed on the opposite inner walls of the four limiting blocks (50) respectively. The other ends of the two third connecting rods (51) are respectively rotatably installed on the sides of the two rectangular sliding plates (49). Clamping columns (52) are fixedly installed on the sides of the two rectangular sliding plates (49) away from each other.

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