Adjusting tool for cold box bottom plate grouting leveling

Abstract

The utility model discloses a kind of adjusting tool of cold box bottom plate grouting leveling, it is related to grouting construction field, to solve the problem that traditional cold box bottom plate grouting leveling method exists precision control difficult, low efficiency and high labor intensity, including support frame, the lower portion of the support frame is equipped with adjusting foot, the outer side of the support frame is fixedly connected with leveler, the inner side of the support frame is equipped with reference groove, scraping plate is slidably connected in the reference groove, pull rod is equipped on the scraping plate, the advantage is that: by support frame and scraping plate, one-time, high-precision, high-efficiency mechanized scraping operation is realized.

Description

Technical Field

[0001] This utility model relates to the field of grouting construction technology, and in particular to an adjustment tool for grouting and leveling the bottom plate of a cold box. Background Technology

[0002] In the installation of large industrial equipment (such as air separation units and liquefied natural gas facilities), the flatness of the base plate of the cold box, as a core component, is crucial. The flatness of the base plate directly affects the installation accuracy and verticality of the upper cold box body, and is fundamental to ensuring long-term stable operation of the equipment, avoiding stress concentration, and preventing leaks. Currently, traditional construction methods are commonly used for grouting and leveling the cold box base plate. These methods have many limitations, directly impacting construction quality, efficiency, and personnel workload.

[0003] The traditional construction process is typically as follows: First, workers erect wooden or steel formwork around the foundation slab to create a closed or semi-closed grouting cavity. Then, using a level, they mark the design elevation line on the inner wall of the formwork or on the anchor bolts of nearby equipment, serving as a rough reference for leveling. Next, the mixed, high-flow grout is injected into the cavity, relying on its fluidity and slight expansion to initially cover the foundation surface. Afterward, workers use simple hand tools such as shovels and scrapers to perform initial spreading and leveling.

[0004] This traditional method relies heavily on manual experience and rough elevation markings, which has significant inherent drawbacks: First, the elevation lines inside the template are only single-line references and cannot provide a uniform and continuous three-dimensional control benchmark for the entire grouting surface. After the grout initially flows and spreads, the surface smoothness depends entirely on the worker's visual inspection and feel using a hand scraper for "rough leveling." This often results in localized high or low points on the surface, making it difficult to achieve the required high standards of smoothness. Subsequent "precise leveling" is necessary, requiring workers to frequently set up levels or lay multiple horizontal lines on the partially solidified grout, performing multiple measurements and repairs (such as removing high points or filling low points), a tedious process with significant variations in precision control.

[0005] Secondly, the "rough leveling" and subsequent "precise leveling" are carried out in separate steps, which are essentially repetitions and remedial actions of the same process, greatly extending the overall time required for a single grouting operation. The setting time window of the grout is limited, and completing precise adjustments within this window is challenging, often resulting in insufficient time that affects the final quality or necessitates secondary grouting.

[0006] Finally, the entire leveling process is highly dependent on the skills and experience of the operators. Workers need to work in a bent-over or squatting position for extended periods, frequently moving and setting up measuring instruments and operating hand tools, resulting in enormous physical exertion. At the same time, it demands extremely high levels of visual judgment and manual dexterity from the workers, making human factors have a significant impact on quality. Utility Model Content

[0007] In view of the above situation and to overcome the defects of the prior art, this utility model provides an adjustment tool for grouting and leveling the bottom plate of a cold box. This design effectively solves the problems of difficult precision control, low efficiency and high labor intensity of traditional grouting and leveling methods for the bottom plate of cold boxes.

[0008] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes a support frame, an adjustable foot is provided at the bottom of the support frame, a leveler is fixedly connected to the outside of the support frame, a reference groove is provided on the inside of the support frame, a scraper is slidably connected in the reference groove, and a pull rod is provided on the scraper. The leveling device includes a first measuring cylinder and a second measuring cylinder, with a connecting tube fixedly connected between the first measuring cylinder and the second measuring cylinder. The first measuring cylinder, the second measuring cylinder, and the connecting tube contain calibration liquid, and the outer walls of the first measuring cylinder and the second measuring cylinder are marked with marking lines.

[0009] Preferably, there are four sets of adjustable feet. Each adjustable foot includes a base, on which a long screw is fixedly connected. The long screw is threadedly connected to the support frame. A limit nut is threadedly connected to the long screw. A control handle is fixedly connected to the long screw. The control handle is located above the support frame and is rotatably connected to the support frame.

[0010] Preferably, the scraper has a wedge-shaped groove on one side, a groove on the scraper, and a rotating pin rotatably connected in the groove, the rotating pin being hinged to the pull rod.

[0011] Preferably, the pull rod is a telescopic rod, and a fixing sleeve is threaded onto the pull rod.

[0012] Preferably, a crossbeam is slidably connected to the support frame, the crossbeam is fixedly connected to the scraper, a lifting seat is slidably connected to the crossbeam, a drive shaft is rotatably connected inside the lifting seat, and a grinding disc is fixedly connected below the drive shaft.

[0013] Preferably, a guide rod is fixedly connected to the crossbeam, the guide rod is slidably connected to the lifting seat, and an electric slide rail is provided between the lifting seat and the crossbeam.

[0014] Compared with the prior art, the outstanding advantages of this utility model are: This application integrates the traditionally scattered and manual labor-dependent steps into a unified tooling operation through a support frame, leveler, and scraper. This fundamentally solves the problems of low precision, poor efficiency, and high labor intensity of traditional methods, and realizes the standardization, precision, and efficiency of grouting and leveling construction of cold box bottom plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the axonal structure of Embodiment 1 of this utility model.

[0016] Figure 2 This is a schematic diagram of the axial cross-sectional structure of the support frame of this utility model.

[0017] Figure 3 This is a schematic diagram of the side cross-sectional structure of the support frame of this utility model.

[0018] Figure 4 This is a schematic diagram of the axonal structure of Embodiment 2 of this utility model.

[0019] Figure 5 This is a schematic diagram of the first axial side structure of the crossbeam of this utility model.

[0020] Figure 6 This is a schematic diagram of the second axial side structure of the crossbeam of this utility model.

[0021] The following are the labels in the diagram: 1. Support frame; 2. Adjustable foot; 201. Base; 202. Long screw; 203. Limit nut; 204. Handle; 3. Leveler; 301. First measuring cylinder; 302. Second measuring cylinder; 303. Connecting pipe; 304. Marking line; 4. Reference groove; 5. Scraper; 6. Tie rod; 7. Inclined groove; 8. Groove; 9. Rotating pin; 10. Fixing sleeve; 11. Crossbeam; 12. Lifting seat; 13. Drive shaft; 14. Grinding disc; 15. Guide rod; 16. Electric slide rail. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] Please see the appendix Figure 1-3 This embodiment describes an adjustment fixture for grouting and leveling the bottom plate of a cold box, including core components such as a support frame 1, adjusting feet 2, leveler 3, reference groove 4, and scraper 5.

[0024] Support frame 1 is a rectangular frame structure welded from steel sections. Its dimensions can be designed and adjusted according to the area of ​​the cold box bottom plate to be constructed, so as to span the entire grouting area. Support frame 1 is the main load-bearing structure of the entire tooling.

[0025] Adjustable feet 2 are located at the four lower corners of the support frame 1, in four sets, to stably support the entire fixture and allow for fine adjustment of the initial height. Each set of adjustable feet 2 includes a base 201, a long screw 202, a limiting nut 203, and a control handle 204. The base 201 contacts the ground, providing stable support. The lower end of the long screw 202 is fixedly connected to the base 201, and the upper end passes through the corresponding corner of the support frame 1 and is connected to it via threads. By rotating the control handle 204, the long screw 202 can be driven to rotate and rise / fall relative to the support frame 1, thereby changing the height of the support frame 1 at that corner. The limiting nut 203 is screwed onto the long screw 202 and fits tightly against the upper surface of the support frame 1, locking it after adjustment to prevent height deviation due to vibration during construction. Through the coordinated operation of the four adjustable feet 2, the overall levelness of the support frame 1 can be initially adjusted.

[0026] The leveling device 3 is fixedly connected to the outside of the support frame 1 to accurately and visually indicate whether the support frame 1 is in an absolutely level state. It includes a first measuring cylinder 301, a second measuring cylinder 302, and a connecting pipe 303 connecting the two. The first measuring cylinder 301 and the second measuring cylinder 302 are vertically fixed to the outside of both longitudinal ends of the support frame 1. The connecting pipe 303 connects the bottoms of the two measuring cylinders, allowing the calibration liquid (such as colored water or oil) injected into them to flow freely within the communicating vessel formed by the three. Marking lines 304 are engraved on the outer walls of the first measuring cylinder 301 and the second measuring cylinder 302. During the leveling operation, observe whether the liquid level in the first measuring cylinder 301 and the second measuring cylinder 302 is flush with their respective marking lines 304. If they are flush, it proves that the support frame 1 has been leveled in that direction; if they are not flush, fine-tune the adjusting feet 2 on the corresponding side until the liquid level is flush with the marking lines 304. This leveling device 3 replaces the cumbersome process of repeatedly setting up a leveling instrument, enabling real-time, visual monitoring of the leveling process. There are two sets of leveling devices 3, located on the left and right sides of the support frame 1, to ensure the levelness of the support.

[0027] The reference groove 4 is fixedly installed on the inner side of the support frame 1 (i.e., the side facing the grouting area), and is usually composed of two parallel steel sections or special guide rails, with its length direction perpendicular to the moving direction of the scraper 5. The upper surface of the reference groove 4 is precision machined to form a high-precision horizontal reference surface. The two ends of the scraper 5 are located inside the reference groove 4, allowing the scraper 5 to slide freely along this high-precision horizontal reference.

[0028] The scraper 5 is a long strip with a straight scraping blade at its lower edge. A pull rod 6 is fixed or connected to the scraper 5, allowing construction workers to hold and pull the scraper 5 along the reference groove 4. In a preferred embodiment, the connection between the scraper 5 and the pull rod 6 is hinged to provide better operational adaptability. Specifically, a groove 8 can be made on the back of the scraper 5, and a connecting block is rotatably connected to the groove 8 via a rotating pin 9. One end of the pull rod 6 is hinged to this connecting block. This hinged structure allows the pull rod 6 to move within a certain angle range, facilitating the application of force by workers of different heights and standing positions. Furthermore, the pull rod 6 can adopt a telescopic rod structure and be connected to a fixing sleeve 10 via a thread. The length of the pull rod 6 can be adjusted by loosening the fixing sleeve 10 to adapt to different construction scenarios and operating habits. After adjustment, tightening the fixing sleeve 10 locks the length. Example 2

[0029] The principle is the same as in the above embodiments, such as... Figure 3-6 As shown, the specific difference in this embodiment is that: a crossbeam 11 is slidably connected to the support frame 1, the crossbeam 11 is fixedly connected to the scraper 5, a lifting seat 12 is slidably connected to the crossbeam 11, a drive shaft 13 is rotatably connected inside the lifting seat 12, and a grinding disc 14 is fixedly connected below the drive shaft 13. To allow for finer processing of the grouting layer surface after a single leveling operation (such as grout lifting, smoothing, or grinding minor uneven areas), this fixture can also integrate an auxiliary leveling device. Specifically, a crossbeam 11 is slidably connected to the support frame 1, and the crossbeam 11 and scraper 5 can be designed to be fixedly connected or detachably connected. A lifting seat 12 is slidably connected to the crossbeam 11 via a lifting mechanism. This lifting mechanism may include a guide rod 15 fixed to the crossbeam 11, and the lifting seat 12 and guide rod 15 slide together to achieve lateral guidance. An electric slide rail 16 can be provided between the lifting seat 12 and the crossbeam 11 to drive the lifting seat 12 to move automatically along the length of the crossbeam 11. A drive shaft 13 is rotatably connected to the lifting seat 12 via bearings. A grinding disc 14 (or polishing disc) is mounted on the lower end of the drive shaft 13, and the upper end of the drive shaft 13 can be connected to the output shaft of a motor (not shown in the figure) mounted on the lifting seat 12. After leveling is completed, the motor can be started to drive the grinding disc 14 to rotate, and the lifting seat 12 can be controlled to descend so that the grinding disc 14 contacts the grout surface. At the same time, the electric slide rail 16 drives the grinding disc 14 to move back and forth along the crossbeam 11, realizing automatic grout lifting, polishing or fine grinding of the entire grouting surface, further ensuring surface quality and smoothness.

[0030] The overall workflow of this application: First, around the grouting area where the template has been erected, set up the support frame 1 of this adjusting fixture in place, and stably place the bases 201 of the four sets of adjusting feet 2 on a solid foundation. Then, observe the liquid levels in the first measuring cylinder 301 and the second measuring cylinder 302, and simultaneously operate the control handles 204 of the four adjusting feet 2 until the liquid levels in both measuring cylinders are completely flush with the marking line 304. At this point, the support frame 1 and the reference groove 4 fixed on it are precisely adjusted to the designed horizontal state.

[0031] Next, the mixed grout is injected into the template cavity. Once the grout has leveled and is slightly above the lower edge of the reference groove 4, the workers use the tie rod 6 to pull the scraper 5, ensuring it adheres closely to the high-precision reference surface of the reference groove 4 and slides it smoothly and evenly along the groove. The scraping edge of the scraper 5 removes excess grout, creating a highly flat grout layer surface parallel to the reference surface of the reference groove 4 below the scraper 5. This process is completed in one step, eliminating the need for subsequent secondary repairs.

[0032] Finally, if the tooling is equipped with an auxiliary leveling device, it can be started while scraping, and the rotating grinding disc 14 can be used to automatically lift and smooth the surface to achieve a better surface effect.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustment fixture for grouting and leveling the bottom plate of a cold box, characterized in that: Includes a support frame (1), with an adjustable foot (2) below the support frame (1), a leveler (3) fixedly connected to the outside of the support frame (1), a reference groove (4) on the inside of the support frame (1), a scraper (5) slidably connected in the reference groove (4), and a pull rod (6) on the scraper (5). The leveler (3) includes a first measuring cylinder (301) and a second measuring cylinder (302). A connecting tube (303) is fixedly connected between the first measuring cylinder (301) and the second measuring cylinder (302). Calibration liquid is provided inside the first measuring cylinder (301), the second measuring cylinder (302) and the connecting tube (303). Marking lines (304) are provided on the outer walls of the first measuring cylinder (301) and the second measuring cylinder (302).

2. The adjusting fixture for grouting and leveling the bottom plate of a cold box according to claim 1, characterized in that: The adjustable support (2) has four sets. The adjustable support (2) includes a base (201). A long screw (202) is fixedly connected to the base (201). The long screw (202) is threadedly connected to the support frame (1). A limit nut (203) is threadedly connected to the long screw (202). A control handle (204) is fixedly connected to the long screw (202). The control handle (204) is located above the support frame (1) and is rotatably connected to the support frame (1).

3. The adjusting fixture for grouting and leveling the bottom plate of a cold box according to claim 1, characterized in that: The scraper (5) has a wedge-shaped groove (7) on one side and a groove (8) on the scraper (5). A rotating pin (9) is rotatably connected in the groove (8) and the rotating pin (9) is hinged to the pull rod (6).

4. The adjusting fixture for grouting and leveling the bottom plate of a cold box according to claim 1 or 3, characterized in that: The pull rod (6) is a telescopic rod, and a fixing sleeve (10) is threaded onto the pull rod (6).

5. The adjusting fixture for grouting and leveling the bottom plate of a cold box according to claim 1, characterized in that: A crossbeam (11) is slidably connected to the support frame (1), and the crossbeam (11) is fixedly connected to the scraper (5). A lifting seat (12) is slidably connected to the crossbeam (11), and a drive shaft (13) is rotatably connected inside the lifting seat (12). A grinding disc (14) is fixedly connected below the drive shaft (13).

6. The adjusting fixture for grouting and leveling the bottom plate of a cold box according to claim 5, characterized in that: A guide rod (15) is fixedly connected to the crossbeam (11), and the guide rod (15) is slidably connected to the lifting seat (12). An electric slide rail (16) is provided between the lifting seat (12) and the crossbeam (11).

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