A combined circular frame for a large pressure testing machine

Abstract

The present invention relates to the field of press technology, and specifically to a combined circular frame for a large-scale pressure testing machine. The frame comprises a frame body, a test chamber is provided in the middle of the frame body, and the frame body comprises a plurality of split frames arranged circumferentially along the test chamber, with two adjacent split frames connected by a first connecting mechanism. The present invention divides the circular frame body into a plurality of split frames, manufactures the plurality of split frames separately during the manufacturing process, and finally connects the plurality of split frames into a whole through the first connecting mechanism. This reduces the difficulty of processing the large frame and is also very convenient during assembly and transportation.

Description

Technical Field

[0001] The invention relates to the technical field of presses, in particular to a combined circular frame of a large-scale pressure testing machine. Background Art

[0002] At present, a large amount of concrete is needed in modern building construction, road and bridge construction, etc. The quality of concrete determines whether the quality of the building, bridge or road meets the standards; and concrete pressure testing is one of the mandatory inspection items for concrete, which is generally completed through a pressure testing machine.

[0003] Figure 1 The frame of an existing pressure testing machine is displayed. Inside the frame is a square test chamber for placing concrete. A hydraulic mechanism is installed on the walls of the test chamber, applying pressure to the concrete until it collapses, ultimately achieving the maximum pressure the concrete can withstand. With the development of technology in the construction industry, the volume of buildings manufactured has increased, resulting in larger and larger concrete specifications. To be able to perform pressure tests on large concrete structures, the frame size has also increased. To enable testing of large concrete structures, the frame diameter has even reached 20 meters, weighing over 2,000 tons. For such a large frame, if it is to be cast as a whole, a huge casting site is required, and a large amount of molten steel must be melted at one time. Consequently, the casting process presents drawbacks such as difficult processing, complex assembly, and inconvenient transportation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a combined circular frame of a large pressure testing machine, which is divided into a plurality of identical parts, which are cast separately and finally assembled, thereby reducing the processing difficulty of the frame.

[0005] The technical solution adopted by the present invention to solve its technical problem is a combined circular frame of a large pressure testing machine, including a frame body, a test cavity is provided in the middle of the frame body, and the frame body includes a plurality of split frames arranged along the circumference of the test cavity, and two adjacent split frames are connected by a first connecting mechanism.

[0006] Furthermore, the first connecting mechanism includes a first bolt and a first super nut, an installation cavity is provided inside the split frame, and an outer surface of the split frame is provided with a mounting hole communicating with the installation cavity, the first bolt passes through two adjacent split frames in sequence, and the first super nut is provided in one of the installation cavities of the two adjacent split frames and is threadedly connected to the first bolt.

[0007] Furthermore, there are at least two first connection mechanisms connecting two adjacent split racks.

[0008] Furthermore, first grooves are vertically provided on opposite sides of two adjacent split racks, and the two first grooves form a first positioning groove, and a first positioning key is provided in the first positioning groove.

[0009] Furthermore, the split frame includes an upper frame and a lower frame, the upper frame is vertically provided with a first through hole, the lower frame is vertically provided with a second through hole, the second bolt passes through the first through hole and the second through hole in sequence, and a second super nut is provided below the lower frame, and the second super nut is threadedly connected to the second bolt.

[0010] Furthermore, there are at least two second bolts connecting the upper frame and the lower frame, and at least two second super nuts connecting the upper frame and the lower frame.

[0011] Furthermore, a second groove is provided on the lower surface of the upper frame, and a third groove opposite to the second groove is provided on the upper surface of the lower frame. The second groove and the third groove form a second positioning groove, and the second positioning groove extends along the circumference of the test cavity. A second positioning key is provided in the second positioning groove.

[0012] Furthermore, an installation groove is provided on the outer peripheral surface of the split frame, and a steel wire winding layer is provided in the installation groove.

[0013] The beneficial effect of the present invention is that the circular frame body is divided into multiple split frames, and during the manufacturing process, the multiple split frames are manufactured separately, and finally the multiple split frames are connected into a whole through the first connecting mechanism, thereby reducing the processing difficulty of the large frame and being very convenient during assembly and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the existing rack;

[0015] Figure 2 is a schematic diagram of the present invention;

[0016] Figure 3 yes Figure 2 A top view of

[0017] Figure 4 It is a schematic diagram of the split rack;

[0018] Figure 5 It is a cross-sectional view of the connection between two split racks;

[0019] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0020] Figure 7 yes Figure 5 's expanded diagram;

[0021] Figure 8 yes Figure 7 Enlarged view of point B in the middle;

[0022] Figure 9 It is along Figure 4 Cross-sectional view of AA;

[0023] Figure 10 yes Figure 9 Enlarged view of point C in the middle;

[0024] Figure 11 yes Figure 9 's expanded diagram.

[0025] Figure markings: 1-frame body; 2-test cavity; 3-split frame; 4-first connecting mechanism; 5-first bolt; 6-first super nut; 7-installation cavity; 8-installation hole; 9-first groove; 10-first positioning groove; 11-first positioning key; 12-upper frame; 13-lower frame; 14-second bolt; 15-second super nut; 16-second groove; 17-third groove; 18-second positioning groove; 19-second positioning key; 20-installation groove; 21-wire winding layer. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] like Figure 2-Figure 11 As shown, the present invention provides a combined circular frame for a large-scale pressure testing machine, including a frame body 1, a test chamber 2 is provided in the middle of the frame body 1, and the frame body 1 includes a plurality of split frames 3 arranged along the circumference of the test chamber 2, and two adjacent split frames 3 are connected by a first connecting mechanism 4.

[0028] The outer contour of the frame body 1 is circular, and the middle part is the test cavity 2. The cross section of the test cavity 2 can be circular, square, or regular hexagonal. The number of split frames 3 needs to be determined according to the shape of the cross section of the test cavity 2. For example, if the cross section of the test cavity 2 is square, then the number of split frames 3 is 4, and the center angle of the arc segment of each split frame 3 is 90 degrees. In this way, the shape and specifications of each split frame 3 are the same. If the cross section of the test cavity 2 is a regular hexagon, then the number of split frames 3 is 6, and the center angle of the arc segment of each split frame 3 is 60 degrees. In this way, the shape and specifications of each split frame 3 are the same. The casting can be completed with a single mold; after the split frames 3 are cast, they are spliced ​​in sequence, and the first connecting mechanism 4 is used to connect the two adjacent split frames 3. The two split frames 3 can be connected by welding to realize the manufacture of the frame body 1.

[0029] In the process of manufacturing the rack body 1, in order to facilitate the adjustment of the split rack 3 during the splicing process, further, see Figure 5-Figure 8 The first connecting mechanism 4 includes a first bolt 5 and a first super nut 6. The interior of the split frame 3 is provided with a mounting cavity 7. The outer surface of the split frame 3 is provided with a mounting hole 8 communicating with the mounting cavity 7. The first bolt 5 passes through two adjacent split frames 3 in sequence. The first super nut 6 is set in one of the mounting cavities 7 of the two adjacent split frames 3 and is threadedly connected with the first bolt 5. The mounting cavity 7 and the mounting hole 8 can be formed when the split frame 3 is cast. The contour shape of the mounting cavity 7 is the same as the outer shape of the split frame 3, and the size of the mounting cavity 7 is smaller than the size of the split frame 3. The mounting hole 8 is circular or square. Workers can enter the interior of the mounting cavity 7 through the mounting hole 8, make a through hole on the cavity wall of the mounting cavity 7, use the first bolt 5 to connect the through holes on the two adjacent split frames 3, and then thread the super nut with the first bolt 5 to achieve the connection between the two adjacent split frames 3.

[0030] In order to improve the stability of the two adjacent split racks 3, further see Figure 5-Figure 8 There are at least two first connecting mechanisms 4 connecting two adjacent split frames 3.

[0031] In order to reduce the radial force on the first bolt 5, further see Figure 6 and Figure 8First grooves 9 are vertically provided on opposite sides of two adjacent split frames 3. The two first grooves 9 form a first positioning groove 10. A first positioning key 11 is provided in the first positioning groove 10. The first positioning key 11 can be a flat key. Placing the flat key in the first positioning groove 10 can better position the two adjacent split frames 3. The flat key can also limit the radial movement of the two adjacent split frames 3 along the frame body 1, thereby reducing the radial force acting on the first bolt 5.

[0032] In order to reduce the manufacturing difficulty of the split frame 3, further, see Figures 9-11 The split frame 3 includes an upper frame 12 and a lower frame 13. A first through-hole is vertically provided on the upper frame 12, and a second through-hole is vertically provided on the lower frame 13. A second bolt 14 passes through the first and second through-holes in sequence. A second super nut 15 is provided below the lower frame 13 and is threadedly connected to the second bolt 14. The upper frame 12 and the lower frame 13 have the same cross-sectional shape and size. The second bolt 14 passes through the first and second through-holes in sequence, and the second super nut 15 secures the upper frame 12 and the lower frame 13 together. By decomposing the split frame 3 into the upper frame 12 and the lower frame 13, the casting size is further reduced.

[0033] In order to improve the stability of the connection between the upper rack 12 and the lower rack 13. Figures 9-11 There are at least two second bolts 14 connecting the upper frame 12 and the lower frame 13, and at least two second super nuts 15 connecting the upper frame 12 and the lower frame 13. The number of the second bolts 14 and the second super nuts 15 should be the same.

[0034] In order to reduce the radial force on the second bolt 14, further see Figures 9-11 A second groove 16 is provided on the lower surface of the upper frame 12, and a third groove 17 is provided on the upper surface of the lower frame 13, opposite to the second groove 16. The second groove 16 and the third groove 17 form a second positioning groove 18, which extends along the circumference of the test chamber 2. A second positioning key 19 is provided in the second positioning groove 18. The second groove 16 and the third groove 17 are of the same shape and size, and the second positioning key 19 can be a flat key. Placement of the second positioning key 19 in the second positioning groove 18 can better position the upper frame 12 and the lower frame 13. At the same time, the second positioning key 19 can limit the radial movement of the upper frame 12 and the lower frame 13 along the frame body 1, thereby reducing the radial force acting on the second bolt 14.

[0035] In order to improve the radial stability of the frame body 1, further see Figures 9-11The outer circumferential surface of the split frame 3 is provided with a mounting groove 20, and a wire winding layer 21 is provided in the mounting groove 20. By providing the wire winding layer 21, a pre-tightening force is provided to the frame body 1 after the split frame 3 is spliced, making the frame body 1 more stable.

[0036] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large-scale pressure testing machine combined circular frame, comprising a frame body (1), wherein a test chamber (2) is provided in the middle of the frame body (1), characterized in that: The frame body (1) includes a plurality of split frames (3) arranged along the circumference of the test cavity (2), and two adjacent split frames (3) are connected by a first connecting mechanism (4); the first connecting mechanism (4) includes a first bolt (5) and a first super nut (6); a mounting cavity (7) is provided inside the split frame (3), and a mounting hole (8) communicating with the mounting cavity (7) is provided on the outer surface of the split frame (3); the first bolt (5) passes through the two adjacent split frames (3) in sequence, and the first super nut (6) is provided in one of the mounting cavities (7) of the two adjacent split frames (3) and is threadedly connected to the first bolt (5); first grooves (9) are vertically provided on opposite sides of the two adjacent split frames (3), and the two first grooves (9) form a first positioning groove (10), and a first positioning key (11) is provided in the first positioning groove (10); The split frame (3) includes an upper frame (12) and a lower frame (13), the upper frame (12) is vertically provided with a first through hole, the lower frame (13) is vertically provided with a second through hole, the second bolt (14) passes through the first through hole and the second through hole in sequence, and a second super nut (15) is provided below the lower frame (13), and the second super nut (15) is threadedly connected to the second bolt (14); A second groove (16) is provided on the lower surface of the upper frame (12), and a third groove (17) is provided on the upper surface of the lower frame (13) opposite to the second groove (16). The second groove (16) and the third groove (17) form a second positioning groove (18). The second positioning groove (18) extends along the circumference of the test cavity (2), and a second positioning key (19) is provided in the second positioning groove (18).

2. A large-scale pressure testing machine modular circular frame according to claim 1, characterized in that: There are at least two first connection mechanisms (4) connecting two adjacent split frames (3).

3. The large-scale pressure testing machine modular circular frame according to claim 1, characterized in that: There are at least two second bolts (14) connecting the upper frame (12) and the lower frame (13), and there are at least two second super nuts (15) connecting the upper frame (12) and the lower frame (13).

4. The large-scale pressure testing machine modular circular frame according to claim 1, characterized in that: An installation groove (20) is provided on the outer peripheral surface of the split frame (3), and a steel wire winding layer (21) is provided in the installation groove (20).

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