Device for adjusting the displacement of spring supports

Abstract

This utility model discloses a device for adjusting the displacement of spring supports. The device includes a portal frame, a bottom beam, a base plate, a vertical guide groove, a movable block, and a jack. The lower ends of the legs on both sides of the portal frame are connected to the base plate. The bottom beam rests on the two base plates and supports the constant force spring seats. A vertical guide groove is provided in the middle of the portal frame's crossbeam. The movable block is embedded in the vertical guide groove and is equipped with a jack. The bottom of the jack contacts the base plate of the equipment's lug seat. This utility model has a compact structure, is suitable for narrow operating spaces, has high adjustment accuracy, requires no external power, can be operated by a single person, and can efficiently complete the installation, maintenance, and adjustment of spring supports for large chemical equipment, ensuring the stability of the equipment's stress and safe operation.

Description

Technical Field

[0001] This utility model relates to the field of chemical machinery technology, specifically a device for adjusting the displacement of a spring support. Background Technology

[0002] In the chemical industry, large stationary equipment such as heat exchangers and towers undergo thermal expansion and contraction displacement due to temperature changes during operation. To balance the weight of the equipment, absorb thermal displacement stress, and prevent cracking and deformation of the equipment and pipelines, spring supports are commonly used as a support structure in the industry. Spring supports require precise adjustment during equipment installation and maintenance to ensure equipment stress balance and operational safety. Currently, spring support displacement adjustment mainly relies on traditional equipment such as hydraulic jacks and large screw jacks, achieved through "external power lifting + manual fine-tuning," but this approach has shortcomings in practical applications. For example, in chemical plants, the surrounding pipelines and valves are densely packed, with support operating clearances of only 0.2m to 0.5m. Traditional equipment is large and has a fragmented structure, making it difficult to penetrate narrow spaces, prone to interference with surrounding components, and even impossible to operate due to space limitations. In addition, traditional equipment is often a spliced ​​structure (such as a jack + adapter sleeve), with assembly gaps and poor compatibility with curved / irregularly shaped support contact surfaces. Under high loads, it is prone to lateral displacement, failing to meet the ±0.1mm adjustment accuracy requirement. It may also cause support deformation, spring breakage, or even equipment tilting accidents due to stress concentration. Finally, it requires external hydraulic / electric power, which is limited by the on-site power source and has high operating costs in explosion-proof scenarios. The hydraulic pressure is difficult to control and is prone to slow adjustment or "overshooting" vibration. Additional tools are required for measurement and multiple people are needed, resulting in high labor costs and large errors. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a device for adjusting the displacement of a spring support, which can solve the problems of poor space adaptability, insufficient accuracy and safety, and low operation convenience of traditional equipment such as hydraulic jacks that are relied upon for adjusting the displacement of existing spring supports, and meet the needs of precise and safe adjustment in confined spaces and under high loads.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a device for adjusting the displacement of a spring support, including a portal frame, a movable block for installing a jack is provided on the upper crossbeam of the portal frame, a jack is installed on the movable block, the jack's top rod is set downwards, a bottom beam is provided between the two legs of the portal frame, and a constant force spring seat is placed on the bottom beam located directly below the jack's top rod.

[0005] In a preferred embodiment, the lower ends of the legs on both sides of the portal frame are provided with base plates, and the two ends of the bottom beam are set on the two base plates.

[0006] In a preferred embodiment, the two side legs of the portal frame are provided with reinforcing sections near the top, and the crossbeam of the portal frame is also provided with reinforcing sections near both ends. The reinforcing sections located on the crossbeam and the legs of the portal frame on the same side are connected by diagonal braces.

[0007] In a preferred embodiment, the reinforcing section is a kit structure, and the reinforcing section is fixedly mounted on the portal frame.

[0008] In a preferred embodiment, the crossbeam of the portal frame is provided with a vertical guide groove in the middle, the movable block is set in the vertical guide groove, one side of the movable block extends out of the vertical guide groove, and the extended part is provided with a jack mounting groove for installing a jack.

[0009] In a preferred embodiment, a vertical lead screw is provided in the vertical guide groove, the lead screw passes through the movable block and is threadedly engaged with the movable block.

[0010] In a preferred embodiment, the upper end of the lead screw extends beyond the top of the vertical guide groove, and the protruding part is provided with an operating rod for manually rotating the lead screw.

[0011] The device for adjusting the displacement of a spring support provided by this utility model has the following advantages by adopting the above structure: (1) It adopts an integrated portal frame structure, eliminating the need for scattered pump stations and other components required by traditional equipment. The overall size is compact and can be directly embedded into the narrow operating gaps within chemical plants. At the same time, the movable block can move flexibly along the vertical guide groove of the crossbeam, accurately aligning with the constant force spring seat at different installation positions, avoiding interference with surrounding pipes and valves. This completely solves the problem that traditional hydraulic equipment cannot operate in dense pipe areas due to its large size and scattered structure, making it suitable for spring support adjustment scenarios of various large chemical equipment. (2) The portal frame forms a triangular stable structure through the reinforcing section and the diagonal brace. The reinforcing section is fixed to the frame in the form of a kit, with no splicing gap. The overall rigidity is strong and can stably bear high loads, avoiding the risk of lateral displacement of traditional splicing equipment. The movable block is driven by the screw, and the jack can be accurately raised and lowered by rotating the operating rod. The fine adjustment accuracy can meet the stringent requirements of the levelness of large chemical equipment. At the same time, the load is directly transmitted without offset, preventing support deformation and spring breakage, and ensuring adjustment safety. (3) The device does not rely on external hydraulic or electric power. Adjustment can be completed by manually rotating the operating lever. The force transmission directly acts on the "equipment ear seat-spring" force chain. There is no need to repeatedly pressurize and depressurize, avoiding the adjustment failure caused by "force transmission breakage" in traditional adjustment. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of this utility model in actual operation.

[0014] In the diagram: 1. Portal frame; 2. Bottom beam; 3. Bottom plate; 4. Reinforcing section; 5. Diagonal brace; 6. Vertical guide groove; 7. Screw rod; 8. Movable block; 9. Jack mounting groove; 10. Operating lever; 11. Constant force spring seat; 12. Jack; 13. Equipment ear base plate. Detailed Implementation

[0015] like Figure 1-2 In the present invention, a device for adjusting the displacement of a spring support includes a portal frame 1. The upper crossbeam of the portal frame 1 is provided with a movable block 8 for mounting a jack 12. The jack 12 is mounted on the movable block 8 with its top rod facing downward. A bottom beam 2 is provided between the two legs of the portal frame 1. A constant force spring seat 11 is placed on the bottom beam 2 located directly below the top rod of the jack 12.

[0016] In a preferred embodiment, the lower ends of the legs on both sides of the portal frame 1 are provided with base plates 3, and the two ends of the bottom beam 2 are set on the two base plates 3.

[0017] In a preferred embodiment, the two side legs of the portal frame 1 are provided with reinforcing sections 4 near the top, and the crossbeam of the portal frame 1 is also provided with reinforcing sections 4 near both ends. The reinforcing sections 4 located on the crossbeam and the legs of the portal frame 1 on the same side of the portal frame 1 are connected by diagonal braces 5.

[0018] In a preferred embodiment, the reinforcing section 4 is a kit structure, and the reinforcing section 4 is fixedly mounted on the portal frame 1.

[0019] In a preferred embodiment, the crossbeam of the portal frame 1 is provided with a vertical guide groove 6 in the middle, the movable block 8 is disposed in the vertical guide groove 6, one side of the movable block 8 extends out of the vertical guide groove 6, and the extended part is provided with a jack mounting groove 9 for installing the jack 12.

[0020] In a preferred embodiment, the vertical guide groove 6 is provided with a vertical lead screw 7, which passes through the movable block 8 and is threadedly engaged with the movable block 8.

[0021] In a preferred embodiment, the upper end of the lead screw 7 extends to the top of the vertical guide groove 6, and the protruding part is provided with an operating rod 10 for manually rotating the lead screw 7.

[0022] The present invention discloses a device for adjusting the displacement of a spring support. When performing spring support displacement adjustment operations: First, place the base plate 3 of the device stably on the foundation ground around the equipment, ensuring that the base plate is in contact with the ground without shaking; then place the bottom beam 2 horizontally above the two base plates 3, so that the bottom beam 2 is in a horizontal state, providing stable support for the subsequent bearing of the constant force spring seat 11.

[0023] Place the constant force spring seat 11 above the bottom beam 2, and ensure that the center of the constant force spring seat 11 is aligned with the force application center of the subsequent jack 12; at this time, the spring above the constant force spring seat 11 naturally extends, and the spring top plate at the top of the spring is in close contact with the equipment ear seat base plate 13 at the bottom of the equipment, forming the initial force chain of "bottom beam - constant force spring seat - spring - spring top plate - equipment ear seat base plate".

[0024] The portal frame 1 is straddling the outer side of the equipment ear base plate 13 and the bottom beam 2, so that the crossbeam of the portal frame 1 is directly above the equipment ear base plate 13. Since the crossbeam of the portal frame 1 has a vertical guide groove 6 in the middle, and the movable block 8 is embedded in the vertical guide groove 6, the vertical position of the movable block 8 in the vertical guide groove 6 needs to be adjusted according to the actual height of the equipment ear base plate 13. By rotating the lead screw 7 in the vertical guide groove 6, the movable block 8 is driven to align the jack mounting groove 9 on it with the height of the equipment ear base plate 13. Then, the jack 12 is installed in the jack mounting groove 9 of the movable block 8, ensuring that the end of the jack rod of the jack 12 is in contact with the equipment ear base plate 13 and that the cylinder of the jack 12 is tightly fixed to the movable block 8. Finally, a complete force closed loop is formed, consisting of "portal frame beam - vertical guide groove - movable block - jack - equipment ear base plate - spring top plate - spring - constant force spring seat - bottom beam - bottom plate". At the same time, the space between the portal frame 1 beam and the bottom beam 2 and the length range of the vertical guide groove 6 together constitute the displacement constraint range for subsequent adjustment.

[0025] During operation, the operator first reconfirms the position of the movable block 8 through the vertical guide groove 6 to ensure that the jack 12 is in precise contact with the base plate 13 of the equipment ear seat. Then, the push rod of the jack 12 slowly extends. As the push rod of the jack 12 extends, the jack will transmit forces to both the upper and lower sides at the same time: the upward force acts on the crossbeam of the portal frame 1. Since the portal frame 1 is a rigid structure and the span is stable, the crossbeam will provide a reverse support force; the downward force is transmitted to the spring top plate through the base plate 13 of the equipment ear seat, and then the spring top plate acts on the spring below.

[0026] Under the downward force of the jack 12, the spring will overcome its own elastic force and undergo compression deformation (if the spring needs to be extended, the jack can be operated in the opposite direction to reduce the force applied by the jack, and the spring will extend under the action of its own elastic restoring force); as the spring is compressed or extended, the overall height of the spring support 11 will decrease or increase accordingly, thereby driving the equipment ear base plate 13 to move synchronously, so as to realize the calibration of the equipment position.

[0027] Throughout the adjustment process, since the distance between the movable block 8 and the bottom beam 3 is fixed, the maximum extension and retraction of the jack is limited within this space. This effectively prevents the spring from failing due to excessive compression or stretching beyond its suitable extension and retraction range. At the same time, the triangular stabilizing structure formed by the reinforcing section 4 and the diagonal brace 5 of the portal frame 1 can prevent the frame from shifting laterally during the adjustment process, ensuring that the force of the jack 12 is always transmitted in the vertical direction, avoiding the spring from shifting under force, and ultimately achieving precise adjustment of the displacement of the constant force spring seat 11.

[0028] Once the equipment position is calibrated to meet the requirements (e.g., the equipment levelness meets the standard) by spring displacement, manual operation of jack 12 is stopped. Jack 12 maintains its current applied force state through its own structure. At the same time, the position of movable block 8 can be locked through the locking structure of vertical guide groove 6, so that the spring is maintained in the adjusted extension position. At this time, the force closed loop of "gantry frame - vertical guide groove - movable block - jack - equipment - spring support - bottom beam" remains stable, which can ensure that the spring support always supports the equipment at the adjusted height during subsequent equipment operation, achieving long-term force balance.

Claims

1. A device for adjusting the displacement of a spring bearing, comprising a portal frame (1), characterized in that: The upper crossbeam of the portal frame (1) is provided with a movable block (8) for installing a jack (12). The jack (12) is installed on the movable block (8). The top rod of the jack (12) is set downward. A bottom beam (2) is provided between the two legs of the portal frame (1). A constant force spring seat (11) is placed on the bottom beam (2) located directly below the top rod of the jack (12).

2. A device for adjusting the displacement of a spring support according to claim 1, characterized in that: The lower ends of the legs on both sides of the portal frame (1) are provided with base plates (3), and the two ends of the bottom beam (2) are set on the two base plates (3).

3. A device for adjusting the displacement of a spring support according to claim 1, characterized in that: The two legs of the portal frame (1) are provided with reinforcing sections (4) near the top. The crossbeam of the portal frame (1) is also provided with reinforcing sections (4) near both ends. The reinforcing sections (4) located on the crossbeam and the legs of the portal frame (1) on the same side are connected by diagonal braces (5).

4. A device for adjusting the displacement of a spring support according to claim 3, characterized in that: The reinforcing section (4) is a kit structure, and the reinforcing section (4) is fixedly mounted on the portal frame (1).

5. A device for adjusting the displacement of a spring support according to claim 1, characterized in that: The crossbeam of the portal frame (1) is provided with a vertical guide groove (6), and the movable block (8) is set in the vertical guide groove (6). One side of the movable block (8) extends out of the vertical guide groove (6), and the extended part is provided with a jack mounting groove (9) for installing the jack (12).

6. A device for adjusting the displacement of a spring support according to claim 5, characterized in that: The vertical guide groove (6) is provided with a vertical lead screw (7), which passes through the movable block (8) and is threadedly engaged with the movable block (8).

7. A device for adjusting the displacement of a spring support according to claim 6, characterized in that: The upper end of the lead screw (7) extends to the top of the vertical guide groove (6), and the protruding part is provided with an operating rod (10) for manually operating the rotation of the lead screw (7).

Images