Constant-force spring hanger stretching tool

Abstract

A constant-force spring hanger stretching tool comprises a pull rod clamp, two jacks and a locknut, the pull rod clamp comprises a first connecting plate and a second connecting plate, holding clamps are fixedly arranged in the middle of the first connecting plate and the middle of the second connecting plate respectively, and the first connecting plate and the second connecting plate are arranged on the two sides of a constant-force spring hanger pull rod. The two holding clamps surround the constant force spring hanger pull rod, the lower edges of the first connecting plate and the second connecting plate are supported on the locknuts, a plurality of bolts penetrate through the two ends of the first connecting plate and the two ends of the second connecting plate and are matched with the nuts in a threaded mode to form locking, and the bottoms of the two jacks are supported at the two ends of the first connecting plate and the two ends of the second connecting plate respectively. The piston rod extends upwards and abuts against a pull rod base of the constant-force spring hanger, and the constant-force spring hanger stretching tool is formed in a combined mode. The spring hanger is simple in structure and low in machining cost, the pull rod of the spring hanger can be efficiently lengthened in the field environment, and the requirement of maintenance work is met.

Description

Technical Field

[0001] The utility model relates to a weighing device, in particular to a constant force spring hanger stretching tool. Background Art

[0002] During the overhaul and replacement of catalysts in the converters of chemical enterprises, it is necessary to dismantle the upper heads of multiple converter tubes as required. Before dismantling the heads, the constant force spring hanger on the converter tube needs to be disconnected from the hook system. In order to prevent the spring rebound of the constant force spring hanger on the top of the converter tube, a limit block must be installed in the hanger system. After the catalyst of each converter tube is replaced and the heads are reinstalled, the hook system and the spring hanger are reconnected. Usually, the hook system and the spring hanger system are matched through pins and balance beams, and the converter tube is pulled by hanging two-way and four-way tie rods on the balance beam.

[0003] During the actual maintenance process, the pipeline deforms and shortens after the conversion tube cools, resulting in a longer distance between the spring hanger and the conversion tube connecting rod. The pin cannot be installed normally, and the spring hanger rod needs to be pulled down with external force to remove the limit block and connect it to the conversion tube hook system. On-site investigation of the ground foundation and the hanger rod shows that there is no fulcrum, and the spring hanger rod cannot be effectively pulled.

[0004] Therefore, how to efficiently lengthen the pull rod of the spring hanger in a field environment is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The purpose of the utility model is to provide a constant force spring hanger stretching tool in view of the deficiencies in the prior art. The tool has a simple structure and low processing cost and can efficiently lengthen the pull rod of the spring hanger in a field environment to meet the needs of maintenance work.

[0006] The technical solution of the utility model is: a constant force spring hanger stretching tool, including a pull rod clamp, two jacks, and a lock nut threadedly engaged on the pull rod of the constant force spring hanger, the pull rod clamp including a first connecting plate and a second connecting plate, the middle parts of the first connecting plate and the second connecting plate are respectively fixedly provided with clamps, the diameter of the circle where the clamps are located is adapted to the diameter of the pull rod of the constant force spring hanger, and the arc corresponding to the clamps is an inferior arc shape, the first connecting plate and the second connecting plate are arranged on both sides of the pull rod of the constant force spring hanger, so that the two clamps are surrounded on the pull rod of the constant force spring hanger, the lower sides of the first connecting plate and the second connecting plate are supported on the lock nut, a plurality of bolts pass through the two ends of the first connecting plate and the second connecting plate and are threadedly engaged with the nut to form a locking, the bottoms of the two jacks are respectively supported on the two ends of the first connecting plate and the second connecting plate, the piston rod extends upward and presses against the pull rod seat of the constant force spring hanger, and the combination constitutes a constant force spring hanger stretching tool.

[0007] The first connecting plate and the second connecting plate are channel steels with the same specifications.

[0008] A plurality of via holes are respectively disposed at both ends of the first connecting plate and the second connecting plate.

[0009] Two through holes are respectively arranged at both ends of the first connecting plate and the second connecting plate and are symmetrically distributed along the clamp.

[0010] The two vias are spaced apart along the length direction of the clamp.

[0011] The lower end of the clamp is flush with the lower edge of the corresponding connecting plate, and the upper end of the clamp exceeds the upper edge of the corresponding connecting plate.

[0012] The clamp is fixed to the middle part of the connecting plate by welding.

[0013] The above technical solution has the following beneficial effects:

[0014] 1. The constant force spring hanger stretching tool includes a rod clamp, two jacks, and a locking nut threadedly engaged with the rod of the constant force spring hanger. The rod clamp includes a first connecting plate and a second connecting plate, and clamps are fixedly arranged in the middle of the first connecting plate and the second connecting plate, respectively. The diameter of the circle where the clamp is located is adapted to the diameter of the rod of the constant force spring hanger, and the arc corresponding to the clamp is an inferior arc, that is, the clamp can be attached to the rod of the constant force spring hanger, and there is a spacing distance between the two clamps to ensure the clamping strength of the clamp on the rod. The first connecting plate and the second connecting plate are arranged on both sides of the constant force spring hanger rod, so that the two clamps are surrounded on the constant force spring hanger rod, the lower sides of the first connecting plate and the second connecting plate are supported on the anti-loosening nut, and multiple bolts pass through the two ends of the first connecting plate and the second connecting plate and threadedly cooperate with the nut to form a lock. The installation and disassembly of the rod clamp are very convenient and efficient, so that the rod clamp can be detachably connected to the rod of the constant force spring hanger, and the height of the rod clamp on the rod is fixed by the supporting force of the anti-loosening nut and the clamping force of the clamp. The bottoms of the two jacks are supported at the two ends of the first connecting plate and the second connecting plate respectively, and the piston rods extend upward and press against the rod seat of the constant force spring hanger, forming a constant force spring hanger stretching tool. By controlling the extension of the jack piston rod, the distance between the rod clamp and the rod seat of the constant force spring hanger is increased, and then the extension of the rod of the constant force spring hanger is driven by the rod clamp to meet the actual needs of on-site maintenance work.

[0015] 2. Multiple through holes are respectively arranged at both ends of the first connecting plate and the second connecting plate, which are symmetrically distributed along the clamp. These through holes are spaced apart along the length direction of the clamp. Such a design can ensure the connection stability between the first connecting plate and the second connecting plate, the uniformity of the force of the clamp, and the installation stability of the pull rod clamp.

[0016] 3. The lower end of the clamp is flush with the lower edge of the corresponding connecting plate, and the upper end of the clamp exceeds the upper edge of the corresponding connecting plate. This design not only extends the contact area between the clamp and the constant force spring hanger rod, but also avoids interference between the clamp and the anti-loosening bolt, thereby ensuring the installation stability of the rod clamp.

[0017] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of the utility model;

[0019] Figure 2 It is a schematic diagram of the utility model when the clamp is closed;

[0020] Figure 3 for Figure 1 A-direction view.

[0021] In the accompanying drawings, 1 is a pull rod clamp, 11 is a first connecting plate, 12 is a second connecting plate, 2 is a jack, 3 is a locking nut, 4 is a clamp, and 5 is a through hole. DETAILED DESCRIPTION

[0022] See also Figures 1 to 3 , is a specific embodiment of a constant force spring hanger stretching tool. The constant force spring hanger stretching tool includes a pull rod clamp 1, two jacks 2, and a lock nut 3 threadedly engaged on the pull rod of the constant force spring hanger. The pull rod clamp 1 includes a first connecting plate 11 and a second connecting plate 12, and a clamp 4 is fixedly arranged in the middle of the first connecting plate 11 and the second connecting plate 12, respectively. The diameter of the circle where the clamp 4 is located is adapted to the diameter of the constant force spring hanger pull rod, and the arc corresponding to the clamp is an inferior arc. In this embodiment, the first connecting plate 11 and the second connecting plate 12 are channel steels of the same specification, and the clamp is fixed to the middle of the connecting plate by welding, and the lower end of the clamp 4 is flush with the lower edge of the corresponding connecting plate, and the upper end of the clamp 4 exceeds the upper edge of the corresponding connecting plate. Specifically, two through holes 5 are respectively arranged at both ends of the first connecting plate 11 and the second connecting plate 12, which are symmetrically distributed along the clamp 4, and the two through holes 5 are spaced apart along the length direction of the clamp 4. The first connecting plate 11 and the second connecting plate 12 are arranged on both sides of the constant force spring hanger rod, so that the two clamps are surrounded on the constant force spring hanger rod, and the lower sides of the first connecting plate 11 and the second connecting plate 12 are supported on the anti-loosening nut 3, with a total of four bolts, passing through the two through holes at both ends of the first connecting plate 11 and the second connecting plate 12, and the threads are matched with the nuts to form a lock. The bottoms of the two jacks 2 are respectively supported at the two ends of the first connecting plate 11 and the second connecting plate 12, and the piston rods extend upward and press against the rod seat of the constant force spring hanger, and the combination constitutes a constant force spring hanger stretching tool.

[0023] The working principle of the utility model is as follows: after the tool is installed, the elongation of the two jacks is determined according to the contraction of the conversion tube, so that the pull rod of the constant force spring hanger moves downward by a corresponding compensation amount, and the hook system and the spring hanger system are connected through the pins and the balance beam, so that the jack can be reset and the jack and the pull rod clamp can be disassembled.

Claims

1. A constant force spring hanger stretching tool, characterized in that: It comprises a tie rod clamp (1), two jacks (2), and a locking nut (3) threadedly engaged with the tie rod of the constant force spring hanger. The pull rod clamp (1) comprises a first connecting plate (11) and a second connecting plate (12), wherein a clamp (4) is fixedly arranged in the middle of the first connecting plate (11) and the second connecting plate (12), respectively, wherein the diameter of the circle where the clamp (4) is located is adapted to the diameter of the pull rod of the constant force spring hanger, and the arc corresponding to the clamp is an inferior arc shape. The first connecting plate (11) and the second connecting plate (12) are arranged on both sides of the constant force spring hanger pull rod, so that the two clamps are surrounded on the constant force spring hanger pull rod, the lower sides of the first connecting plate (11) and the second connecting plate (12) are supported on the anti-loosening nut (3), and a plurality of bolts pass through the two ends of the first connecting plate (11) and the second connecting plate (12) and are threadedly matched with the nut to form a locking. The bottoms of the two jacks (2) are respectively supported at the two ends of the first connecting plate (11) and the second connecting plate (12), and the piston rods extend upward and press against the pull rod seat of the constant force spring hanger, thereby forming a constant force spring hanger stretching tool.

2. The constant force spring hanger stretching tool according to claim 1, characterized in that: The first connecting plate (11) and the second connecting plate (12) are channel steels of the same specifications.

3. The constant force spring hanger stretching tool according to claim 1 or 2, characterized in that: A plurality of via holes (5) are respectively provided at both ends of the first connecting plate (11) and the second connecting plate (12).

4. The constant force spring hanger stretching tool according to claim 3, characterized in that: Two through holes (5) are respectively arranged at the two ends of the first connecting plate (11) and the second connecting plate (12), and are symmetrically distributed along the clamp (4).

5. The constant force spring hanger stretching tool according to claim 4, characterized in that: The two through holes (5) are spaced apart and distributed along the length direction of the clamp (4).

6. The constant force spring hanger stretching tool according to claim 1, characterized in that: The lower end of the clamp (4) is flush with the lower edge of the corresponding connecting plate, and the upper end of the clamp (4) exceeds the upper edge of the corresponding connecting plate.

7. The constant force spring hanger stretching tool according to claim 1, characterized in that: The clamp (4) is fixed to the middle part of the connecting plate by welding.

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