Prefabricated chute grating

Abstract

This invention relates to a prefabricated sluice gate, comprising an upper support member, the upper support member including two spaced-apart side plates, with a plurality of sets of ribs spaced along the longitudinal direction between the two side plates, and a plurality of notches distributed along the longitudinal direction on the upper end face of each set of ribs; and a lower support member, the lower support member including two spaced-apart side plates, the two side plates being spaced along the longitudinal direction between the two side plates, and a plurality of sets of ribs distributed along the longitudinal direction on the lower end face of each set of ribs. This invention provides a prefabricated sluice gate structure, constructed from two integrally formed support members arranged in a cross pattern. On the one hand, it eliminates the risk of weld cracking due to impact; on the other hand, the prefabricated sluice gate structure allows for direct overlap, facilitating installation and benefiting downhole operations.

Description

Technical Field

[0001] This invention belongs to the field of mining technology, and specifically relates to prefabricated chute grids. Background Technology

[0002] To prevent the shaft of the ore pass from being blocked by ore at the bottom or by large rocks at the entrance, screening of the ore is necessary during rock haulage, whether in the main ore pass or a mining ore pass. This screening is typically achieved by installing a grating at the entrance of the ore pass. The size of the opening on the grating is determined according to needs. The vertical deformation of the grating under impact absorbs and resists the impact force generated by the rocks, thus screening out rocks that meet the specified requirements. Currently, mines generally use several welded steel beams to form the grating. During construction, welding is required at the joints. On the one hand, welding and installing the grating underground is inconvenient; on the other hand, the grating is prone to cracking and damage due to vibration of the welds under impact, resulting in long installation periods and high maintenance rates, placing a significant burden on mine safety management. Summary of the Invention

[0003] This invention addresses the problems of existing underground welding installation of grids, which is inconvenient, prone to weld vibration and cracking under impact, has a long installation period, and a high maintenance rate, placing a heavy burden on mine safety management. The invention provides a prefabricated chute grid, with the specific technical solution as follows:

[0004] This application provides prefabricated chute grates, including:

[0005] The upper support member includes two spaced-apart side plates, and several sets of ribs are spaced along the length between the two side plates. Each set of ribs has several sets of notches distributed along its length on its upper end face.

[0006] And a lower support member, the lower support member including two side plates arranged at intervals, and several sets of ribs arranged at intervals along the length between the two side plates, and several sets of notches distributed along the length of the lower end face of each set of ribs.

[0007] In the installed state, the two sets of side plates are connected end to end to form a closed frame. The ribs are arranged in a cross pattern to form a grid structure with a number of regular openings. The notch 1 corresponds to the notch 2 so that the ribs 1 and rib 2 interlock.

[0008] As a further technical solution of the present invention, the upper and lower end faces of the first rib and the second rib are both on the same horizontal plane.

[0009] As a further technical solution of the present invention, the end faces of the first side plate and the second side plate that meet each other are inclined structures that cooperate with each other.

[0010] As a further technical solution of the present invention, the end faces of the side plate one and the side plate two that meet have a positioning structure. The positioning structure includes a stepped groove opened on the side plate one and a stepped block connected on the side plate two. In the installed state, the stepped block is inserted into the corresponding stepped groove, and the stepped surface of the stepped groove supports the lower support member.

[0011] As a further technical solution of the present invention, the width of the step block at one end of the adjacent side plate is smaller than the width of the step block at one end away from the side plate.

[0012] As a further technical solution of the present invention, in the installed state, the second rib is inserted into the first notch, and there is a gap between the second rib and one side wall of the notch.

[0013] As a further technical solution of the present invention, in the installed state, the first rib is inserted into the second notch, and there is a second gap between the first rib and the side wall of the second notch.

[0014] As a further technical solution of the present invention, in the installed state, the first rib and the second rib have a gap in the vertical plane, and a relative moving part is provided at the gap. The relative moving part includes a lower sleeve and an upper sleeve that cooperate with each other. The lower sleeve has a plurality of rolling elements. The rolling elements include a collar and a ball rolled in the collar. A connecting member is connected between two adjacent collars to form a movable support surface. The lower sleeve and the upper sleeve are separated by the support surface and a gap three is formed between the lower sleeve and the upper sleeve to allow the lower sleeve and the upper sleeve to slide relative to each other on the horizontal plane. A spring is connected between the collar and the lower sleeve.

[0015] As a further technical solution of the present invention, the upper support member and the lower support member are both integrally formed.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) In this application, a prefabricated grid structure is provided, which is composed of two integrally formed support members arranged in a cross pattern. On the one hand, it eliminates the hidden danger of cracking caused by impact on the weld. On the other hand, the prefabricated grid structure can be directly overlapped, making the installation process convenient and beneficial to downhole operations.

[0018] (2) In this application, by setting the relative motion part, the transmission of force in the vertical direction is ensured between rib one and rib two, and the interference force in the horizontal direction is reduced and absorbed, so as to avoid the twisting of rib one or rib two. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the assembled chute grating is shown;

[0020] Figure 2 An exploded structural diagram of the upper and lower support members is shown.

[0021] Figure 3 A schematic diagram of the structure of gap one is shown;

[0022] Figure 4 A schematic diagram of the structure of gap two is shown;

[0023] Figure 5 A schematic diagram of the assembly structure at rib one and rib two is shown;

[0024] Figure 6 A schematic diagram of the relative motion section is shown.

[0025] Legend: 100, Upper support; 110, Side plate one; 111, Step groove; 120, Rib one; 121, Notch one; 122, Gap one; 200, Lower support; 210, Side plate two; 211, Step block; 220, Rib two; 221, Notch two; 222, Gap two; 300, Relative moving part; 310, Lower housing; 320, Upper housing; 330, Rolling part; 331, Collar; 332, Ball; 340, Gap three; 350, Connector; 360, Spring; 400, Exit. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0027] The existing technology of welding and installing grids underground is inconvenient, and the grid is prone to cracking and damage due to vibration of the weld when subjected to impact. The installation period is long and the maintenance rate is high, which puts a heavy burden on mine safety production management. This application provides a prefabricated grid structure, which is composed of two integrally formed support members arranged in a cross pattern. On the one hand, it eliminates the hidden danger of cracking of the weld due to impact. On the other hand, the prefabricated grid structure can be directly overlapped, making the installation process convenient and beneficial to underground operations.

[0028] Figure 1 A schematic diagram of the overall structure of the assembled chute grating is shown; Figure 1The prefabricated ore chute includes an upper support 100 and a lower support 200. The upper support 100 overlaps the lower support 200 to form a chute structure with several regularly arranged openings 400. In use, the upper support 100 overlaps the lower support 200 to form a chute structure to support and screen large pieces of ore.

[0029] Figure 2 An exploded structural diagram of the upper support member 100 and the lower support member 200 is shown; Figure 2In the middle, the upper support member 100 includes two spaced-apart side plates 110, with several sets of ribs 120 spaced along the length between the two side plates 110. Each set of ribs 120 has several sets of notches 121 distributed along its length on its upper end face. The lower support member 200 includes two spaced-apart side plates 210, with several sets of ribs 220 spaced along the length between the two side plates 210. Each set of ribs 220 has several sets of notches 221 distributed along its length on its lower end face. In the installed state, the two sets of side plates 210 and the two sets of side plates 110 are alternately connected end-to-end to form a rectangular closed structure. The ribs 120 and ribs 220 are arranged crosswise to form a structure with several openings 4. The grid structure is arranged in a regular pattern, with notch 121 corresponding to notch 221 so that ribs 120 and ribs 220 interlock. The upper and lower end faces of ribs 120 and ribs 220 are on the same horizontal plane. The end faces of side plates 110 and 210 that meet each other are inclined structures that cooperate with each other. During installation, the upper support 100 is overlapped on the lower support 200. At this time, the two side plates 210 and the two side plates 110 alternately form a rectangular closed outer frame structure. Within this closed space, ribs 220 and ribs 120 are arranged crosswise. During installation, the notch 221 below rib 220 interlocks with the notch 121 above rib 120. Inside, the two are intersecting and corresponding, thus forming several separated openings 400. These openings 400 are regularly arranged to form a grid structure. Furthermore, the depths of notch 221 and notch 121 correspond to each other. This means that after installation, the upper and lower end faces of rib 220 and side plate 110 are on the same horizontal plane, ensuring the overall flatness of the grid's end faces. The end faces where side plate 110 and side plate 210 meet have positioning structures, including a stepped groove 111 on side plate 110 and a stepped block 211 connected to side plate 210. In the installed state, the stepped block 211 is inserted into the corresponding stepped groove 111, and the stepped surface of the stepped groove 111 supports the lower support member 200. During installation, the end face of side plate 210 moves downwards to meet the contact surface of side plate 110. As side plate 210 continues to move downwards, step block 211 is inserted into step groove 111. The step surface of step groove 111 can support the entire lower support member 200 to prevent the lower support member 200 from falling off. The width of the end of step block 211 that contacts side plate 210 is less than the width of the end of step block 211 that is away from side plate 210. Specifically, it can be one of the following: "T" shaped structure, dovetail structure, trapezoidal structure, etc. No further restrictions are made here. Through the restriction of this structure, the horizontal separation of upper support member 100 and lower support member 200 after connection can be restricted, so that upper support member 100 and lower support member 200 can only be separated in the vertical direction.

[0030] Figure 3A schematic diagram of the structure of gap 122 is shown; Figure 3 In the installed state, rib 220 is inserted into notch 121, and there is a gap 122 between rib 220 and the side wall of notch 121. This is because the upper support 100 needs to deform downward to absorb pressure. However, when rib 120 moves downward, it deforms because both ends of rib 120 are restricted and fixed. Not only will it deform in the vertical plane, but it will also move in the horizontal plane. In this way, the horizontal movement of rib 120 will force rib 220 to deform in the thickness direction and force rib 220 to twist. The gap 122 can reserve space for relative movement between rib 120 and rib 220 to allow them to move relative to each other.

[0031] Figure 4 A schematic diagram of the structure of gap 222 is shown; Figure 4 In the installed state, rib 120 is inserted into notch 221, and there is gap 222 between rib 120 and the side wall of notch 221. This is because the upper support 100 needs to deform downward to absorb pressure. However, when rib 220 moves downward, since the two ends of rib 220 are restricted and fixed, the deformation of rib 220 will not only occur in the vertical plane, but also in the horizontal plane. In this way, the horizontal movement of rib 220 will force rib 120 to deform in the thickness direction and force rib 120 to twist. The gap 222 can reserve space for relative movement between rib 220 and rib 120 to allow them to move relative to each other.

[0032] Figure 5 A schematic diagram of the assembly structure at rib 120 and rib 220 is shown; Figure 6 A schematic diagram of the relative motion unit 300 is shown; Figure 5 and Figure 6In the installed state, rib 120 and rib 220 have a gap in the vertical plane, and a relative movement part 300 is provided at the gap. The relative movement part 300 includes a lower sleeve 310 and an upper sleeve 320 that cooperate with each other. The lower sleeve 310 has a plurality of rolling elements 330. The rolling elements 330 include a collar 331 and a ball 332 that is rolled in the collar 331. A connecting member 350 is connected between two adjacent collars 331 to form a movable support surface. The lower sleeve 310 and the upper sleeve 320 are separated by the support surface, and a gap 340 is formed between the lower sleeve 310 and the upper sleeve 320 to allow the lower sleeve 310 and the upper sleeve 320 to slide relative to each other on the horizontal plane. When the upper sleeve 320 is translated, it can drive The rolling element 330 rolls, allowing horizontal movement. The lower housing 310 and upper housing 320 do not contact each other, but rather form a support surface through several point contacts created by the balls 332, reducing the contact area. The rolling motion, combined with the sliding motion, significantly reduces frictional forces during horizontal relative movement, thus minimizing distortion caused by interference with horizontal deformation during downward deformation. A spring 360 connects the collar 331 and the lower housing 310. The spring 360 absorbs the horizontal sliding force of the upper housing 320 relative to the lower housing 310. In summary, the relative movement part 300, between rib 120 and rib 220, ensures the transmission of force in the vertical direction while reducing and absorbing interference forces in the horizontal direction. The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it.

Claims

1. A prefabricated chute grating, characterized in that, include: The upper support member (100) includes two side plates (110) spaced apart, and several sets of ribs (120) spaced apart along the length between the two side plates (110). Each set of ribs (120) has several sets of notches (121) distributed along its length on its upper end face. And a lower support member (200), the lower support member (200) includes two side plates (210) arranged at intervals, and a number of sets of ribs (220) are arranged at intervals along the length between the two side plates (210), and a number of notches (221) distributed along the length of each set of ribs (220) are opened on the lower end face. In the installed state, the two sets of side plates two (210) and the two sets of side plates one (110) are connected end to end to form a closed frame. The ribs one (120) and ribs two (220) are arranged in a cross pattern to form a grid structure with a number of openings (400) arranged in a regular pattern. The notch one (121) corresponds to the notch two (221) so that the ribs one (120) and ribs two (220) interlock with each other. The first rib (120) and the second rib (220) have a gap in the vertical plane, and a relative motion part (300) is provided at the gap. The relative motion part (300) includes a lower sleeve (310) and an upper sleeve (320) that cooperate with each other. The lower sleeve (310) has a plurality of rolling elements (330) inside. The rolling element (330) includes a collar (331) and a ball (332) that is rolled in the collar (331). Two adjacent balls are rolled in the collar (331). A connector (350) is connected between the collars (331) to form a movable support surface. The lower sleeve (310) and the upper sleeve (320) are separated by the support surface and a gap (340) is formed between the lower sleeve (310) and the upper sleeve (320) to allow the lower sleeve (310) and the upper sleeve (320) to slide relative to each other on the horizontal plane. A spring (360) is connected between the collar (331) and the lower sleeve (310).

2. The prefabricated chute grating according to claim 1, characterized in that, In the installed state, the upper and lower end faces of the first rib (120) and the second rib (220) are both on the same horizontal plane.

3. The prefabricated chute grating according to claim 2, characterized in that, In the installed state, the end faces of the first side plate (110) and the second side plate (210) that meet each other are inclined structures that cooperate with each other.

4. The prefabricated chute grating according to claim 3, characterized in that, The end faces where the side plate 1 (110) and the side plate 2 (210) meet have a positioning structure. The positioning structure includes a step groove (111) opened on the side plate 1 (110) and a step block (211) connected on the side plate 2 (210). In the installed state, the step block (211) is inserted into the corresponding step groove (111), and the step surface of the step groove (111) supports the lower support member (200).

5. The prefabricated chute grating according to claim 4, characterized in that, The width of the step block (211) at one end of the side plate two (210) is less than the width of the step block (211) at the end away from the side plate two (210).

6. The prefabricated chute grating according to claim 1, characterized in that, In the installed state, the second rib (220) is inserted into the first notch (121), and there is a gap (122) between the second rib (220) and the side wall of the first notch (121).

7. The prefabricated chute grating according to claim 1, characterized in that, In the installed state, the first rib (120) is inserted into the second notch (221), and there is a second gap (222) between the first rib (120) and the side wall of the second notch (221).

8. The prefabricated chute grating according to claim 1, characterized in that, The upper support (100) and the lower support (200) are both integrally formed.

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