A rolling force adjustment device for a steel silo forming machine

Abstract

A rolling force adjustment device for a steel silo forming machine includes a fixed sleeve fixedly connected to the forming machine. An elastic thrust adjustment device is installed within the fixed sleeve. The elastic thrust adjustment device includes a flange sleeve, with the inner end of a disc spring assembly directly or indirectly pressed onto the flange sleeve and the outer end abutting against an end plate. A push rod is installed within the flange sleeve. Multiple pairs of corresponding bolt holes are formed on the end plate and the flange sleeve. A first bolt passes through each bolt hole, and a small nut is screwed onto the first bolt. The end plate and the flange sleeve are connected as a single unit by bolts and nuts. A limit plate is installed at the outer end of the end plate, limiting its movement at least in the outward direction. A jack is installed between the limit plate and the end plate, with both ends of the jack abutting against the end plate and the limit plate respectively. This device has a reasonable structure and convenient rolling force adjustment; only one operator is needed to operate the jack to adjust the rolling force.

Description

Technical Field

[0001] This utility model relates to steel silo manufacturing equipment, and in particular to a rolling force adjustment device for a steel silo forming machine (set), belonging to the field of mechanical technology. Background Technology

[0002] In the construction of spiral steel silos, the forming machine (set) plays a role in bending and pre-forming the steel plates, bending them to the required radius of curvature for the silo. The forming machine set consists of multiple sets of "upper and lower rollers" connected in series (usually 8-12 sets). The roller gap and roller shape of each set of rollers are designed according to the steel plate thickness (0.8-4mm) and the forming curvature. The uncoiled flat steel is subjected to "progressive forming". The general design is that the first few sets of rollers achieve double-sided pre-bending of the steel plate, the middle rollers adjust the bending angle, and the later sets of rollers press the steel plate into an arc shape that matches the diameter of the silo. Some forming machines also simultaneously press "reinforcing ribs" on the surface of the steel plate to enhance the deformation resistance of a single steel plate. During the forming of steel silos, a certain rolling force is required during rolling. Current structures for applying this rolling force include the scheme used in the steel silo forming machine disclosed in Chinese Patent Application No. 2020214992573. In this scheme, a passive roller rotates on a frame, while an active roller is rotatably connected to a sliding seat. The sliding seat is slidably fitted onto a linear guide on the frame. A thrust mechanism (an adjustable rolling force loading mechanism) has a push rod that presses against the sliding seat. Adjusting the thrust of the thrust mechanism adjusts the force exerted by the push rod on the sliding seat, thus adjusting the rolling force to accommodate steel plate forming and rolling processes of different thicknesses. The elastic component on the thrust mechanism typically uses a disc spring assembly. In the aforementioned Chinese patent, one end of the elastic component abuts against the end plate, and the other end of the elastic component is connected to the adjusting push rod. The elastic component drives the adjusting push rod to slide, thereby driving the sliding seat and the driving roll to slide toward the driven roll, so that the driving roll presses the sheet metal on the driven roll for rolling. By adjusting the distance between the end plate and the connecting flange, the elastic force of the elastic component can be adjusted, thereby adjusting the rolling load between the driving roll and the driven roll. However, the end plate and the flange are connected by at least six bolts. To adjust the distance between them, the nuts on all six bolts need to be adjusted. The forming machine is installed at a high angle during use and is also affected by the surrounding site and equipment. This adjustment method is time-consuming and labor-intensive, and it is difficult to ensure the consistency of the six bolts. It may also cause uneven loading. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems in the existing rolling force adjustment of steel silo forming machines and to provide a rolling force adjustment device for steel silo forming machines.

[0004] To achieve the purpose of this utility model, the following technical solution is adopted: a rolling force adjustment device for a steel silo forming machine, comprising a fixed sleeve fixedly connected to the forming machine, an elastic thrust adjustment device provided in the fixed sleeve, the elastic thrust adjustment device comprising a flange sleeve, the inner end of a disc spring assembly directly or indirectly pressed onto the flange sleeve, the outer end abutting against an end plate, a push rod provided in the flange sleeve, multiple pairs of corresponding bolt holes provided on the end plate and the flange sleeve, a first bolt passing through the bolt holes, a small nut screwed onto the first bolt, the end plate and the flange sleeve being connected as one unit by bolts and small nuts, a limit plate provided at the outer end of the end plate, the limit plate being limited at least in the outward direction, a jack provided between the limit plate and the end plate, the two ends of the jack abutting against the end plate and the limit plate respectively.

[0005] Furthermore, the top rod is fixedly connected in the flange sleeve.

[0006] Furthermore, the push rod is slidably inserted into the flange sleeve, and a large nut is fixedly connected to the push rod at the outer end of the flange sleeve. The outer diameter of the large nut is larger than the central hole of the flange sleeve, and the inner end of the disc spring assembly abuts against the large nut, which in turn abuts against the flange sleeve.

[0007] Furthermore, multiple holes are provided on the limiting plate, and the second bolt passes through the holes. A limiting nut is screwed onto the second bolt outside the holes. The inner end of the second bolt is machined with a U-shaped port. A pin seat is fixedly connected to the frame. Corresponding pin holes are provided on the pin seat and the U-shaped port. The pin seat is inserted into the U-shaped port, and a connecting pin passes through the pin hole.

[0008] Furthermore, the limiting plate and the end plate have grooves on their opposite surfaces, and the two ends of the jack are located in the grooves.

[0009] The positive and beneficial technical effects of this utility model are as follows: the device has a reasonable structure and the rolling force is easy to adjust. Only one operator is needed to operate the jack to adjust the rolling force. The specific implementation method will be described in detail below. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the present invention.

[0011] Figure 2 This is a schematic diagram of another type of steel silo rolling force application mechanism.

[0012] Figure 3 Is with Figure 2 Matching work clothes. Detailed Implementation

[0013] To more fully explain the implementation of this utility model, implementation examples are provided. These implementation examples are merely illustrative of this utility model and do not limit its scope.

[0014] The present invention will be further explained in detail with reference to the accompanying drawings, in which the following references are made: 1: frame; 2: fixing sleeve; 3: flange sleeve; 4: large nut; 5: disc spring assembly; 6: end plate; 7: first bolt; 8: small nut; 9: jack; 10: limiting plate; 11: limiting nut; 12: second bolt; 13: connecting pin; 14: U-shaped port; 15: pin seat; 16: push rod; 17: baffle; 18: snap ring; 19: sleeve; 20: bolt tooth; 21: pry bar hole.

[0015] As attached Figure 1 As shown, a rolling force adjustment device for a steel silo forming machine includes a fixed sleeve 2 fixedly connected to the forming machine. Figure 1 shows the frame of the forming machine. The fixed sleeve is fixedly connected to the frame. An elastic thrust adjustment device is installed in the fixed sleeve. The elastic thrust adjustment device includes a flange sleeve 3. The inner end of a disc spring assembly 5 is directly or indirectly pressed onto the flange sleeve, and the outer end abuts against the end plate 6. A push rod 16 is installed in the flange sleeve. In this application, there are two ways to connect the push rod to the flange sleeve. The first way is that the push rod is fixedly connected to the flange sleeve. In this case, the reaction force during rolling acts on the flange sleeve. The first method provides elastic force for the rolling process through the relative sliding between the flange sleeve and the first bolt. The second method involves the push rod sliding through the flange sleeve, with a large nut 4 fixedly connected to the push rod at the outer end of the flange sleeve. The outer diameter of the large nut is larger than the central hole of the flange sleeve. The inner end of the disc spring assembly abuts against the large nut, which in turn abuts against the flange sleeve. In this case, the reaction force during rolling acts on the large nut, and the elastic force during rolling is provided through the interaction between the large nut and the disc spring assembly. Compared to the first method, the elastic force provided by the second method is less susceptible to negative interference from the first bolt's corrosion or foreign object jamming. The disc spring assembly is composed of multiple disc springs stacked together.

[0016] Multiple pairs of corresponding bolt holes are provided on the end plate and the flange sleeve. The first bolt 7 is inserted through the bolt holes. There are generally six first bolts. Small nuts 8 are screwed onto the first bolts. The end plate and the flange sleeve are connected as one unit by bolts and small nuts. A limit plate is provided at the outer end of the end plate. The limit plate is limited at least in the outward direction. A jack is provided between the limit plate and the end plate. The two ends of the jack abut against the end plate and the limit plate respectively. In this embodiment, multiple holes are provided on the limiting plate, and the second bolt 12 passes through the holes. A limiting nut 11 is screwed onto the second bolt outside the holes. A U-shaped port 14 is machined on the inner end of the second bolt. A pin seat 15 is fixedly connected to the frame. Corresponding pin holes are provided on the pin seat and the U-shaped port. The pin seat is inserted into the U-shaped port, and a connecting pin 13 passes through the pin hole. This connection method of the second bolt is very easy to maintain. The second bolt can be removed from the frame by pulling out the connecting pin, which is very convenient. To prevent the connecting pin from axially moving and falling off, threads can be machined on the end of the connecting pin, and an anti-movement nut can be screwed onto the threads. Alternatively, a radial pin hole can be provided on the connecting pin, and a pin can be inserted into the pin hole to prevent movement. The limiting plate and the end plate have grooves on their opposite surfaces. The two ends of the jack are located in the grooves, which provides a positioning function for the jack.

[0017] A 10-ton jack is sufficient for this application.

[0018] When adjusting the rolling force using this rolling force adjustment device, it is only necessary to operate the jack. The jack drives the flange sleeve to move axially within the fixed sleeve, which adjusts the rolling force very conveniently.

[0019] This application also provides a rolling force application mechanism and adjustment fixture for a steel silo forming machine, which can also be used for adjusting the rolling force of a steel silo forming machine. The mechanism includes a fixed sleeve 2 fixedly connected to the forming machine, and an elastic thrust adjustment device is provided in the fixed sleeve. The elastic thrust adjustment device includes a flange sleeve 3, a push rod 16 slidably passing through the flange sleeve 3, and a large nut 4 fixedly connected to the push rod at the outer end of the flange sleeve. The outer diameter of the large nut is larger than the central hole of the flange sleeve. The inner end of the disc spring assembly 5 abuts against the large nut, the outer end abuts against the end plate 6, and the large nut abuts against the flange sleeve. The end plate 6 and the flange sleeve 3 are provided with openings... There are multiple pairs of corresponding bolt holes, with a first bolt 7 inserted through each hole. There are generally six first bolts, and a small nut 8 is screwed onto each first bolt. The end plate and the flange sleeve are connected as one unit by bolts and small nuts. The central hole of the fixed sleeve is machined with internal threads, and the flange sleeve is machined with external threads. The external threads of the flange sleeve are screwed onto the internal threads. A snap ring groove is machined near the inner end of the flange sleeve. A baffle 17 is fitted on the inner end of the flange sleeve. The outer diameter of the baffle is larger than the diameter of the internal thread hole on the fixed sleeve. The baffle is limited by a snap ring 18 installed in the snap ring groove, which can limit the rotation limit of the flange sleeve.

[0020] A rolling force application mechanism adjustment fixture for a steel silo forming machine is disclosed. The fixture includes a sleeve 19, into which an end plate can enter. The sleeve has threaded holes on its circumference, each threaded with bolt teeth 20. The sleeve's length is greater than the length between the end plate and the flange sleeve. A pry bar hole 21 is also provided on the circumference of the sleeve near its outer end. The threaded holes are arranged in one or more rings on the sleeve's circumference, each ring consisting of multiple threaded holes. After the end plate enters the sleeve, rotating the sleeve allows the bolt teeth threaded in the threaded holes to be positioned on the same side of different first bolts. "Same side" refers to the same side in either a clockwise or counterclockwise direction. During adjustment, multiple bolt teeth can drive the first bolts to rotate, thereby driving the flange sleeve to rotate. During the rotation of the flange sleeve, under the action of the internal and external threads, it will displace along the axial direction of the fixed sleeve, thereby causing the push rod to displace in the opposite direction and thus adjusting the rolling force. When using this adjustment tool, first move the bolt teeth radially outward so that the end plate and the first bolt around it can enter the sleeve. Then move the bolt teeth inward so that when the sleeve rotates, the bolt teeth interfere with the first bolt. Adjustment can be achieved by inserting a pry bar into the pry bar hole to drive the sleeve to rotate.

[0021] After a detailed description of the embodiments of this utility model, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model, and this utility model is not limited to the embodiments of the examples given in the specification.

Claims

1. A rolling force adjustment device for a steel silo forming machine, comprising a fixed sleeve fixedly connected to the forming machine, characterized in that: An elastic thrust adjustment device is provided in the fixed sleeve. The elastic thrust adjustment device includes a flange sleeve. The inner end of the disc spring assembly is directly or indirectly pressed on the flange sleeve, and the outer end abuts against the end plate. The push rod is set in the flange sleeve. Multiple pairs of corresponding bolt holes are opened on the end plate and the flange sleeve. A first bolt is inserted through the bolt holes, and a small nut is screwed on the first bolt. The end plate and the flange sleeve are connected as a whole by bolts and small nuts. A limit plate is provided at the outer end of the end plate. The limit plate is limited at least in the outward direction. A jack is provided between the limit plate and the end plate. The two ends of the jack abut against the end plate and the limit plate respectively.

2. The rolling force adjustment device for a steel silo forming machine according to claim 1, characterized in that: The top rod is fixedly connected in the flange sleeve.

3. The rolling force adjustment device for a steel silo forming machine according to claim 1, characterized in that: The top rod slides through the flange sleeve, and a large nut is fixedly connected to the top rod at the outer end of the flange sleeve. The outer diameter of the large nut is larger than the central hole of the flange sleeve. The inner end of the disc spring assembly abuts against the large nut, and the large nut abuts against the flange sleeve.

4. The rolling force adjustment device for a steel silo forming machine according to claim 1, characterized in that: Multiple holes are provided on the limiting plate, and the second bolt passes through the holes. A limiting nut is screwed onto the second bolt outside the holes. The inner end of the second bolt is machined with a U-shaped port. A pin seat is fixedly connected to the frame. Corresponding pin holes are provided on the pin seat and the U-shaped port. The pin seat is inserted into the U-shaped port, and a connecting pin passes through the pin hole.

5. The rolling force adjustment device for a steel silo forming machine according to claim 1, characterized in that: The limiting plate and the end plate have grooves on their opposite surfaces, and the two ends of the jack are located in the grooves.

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