Grid screen device

Abstract

The utility model relates to a grizzly screen device which comprises a first grizzly screen, a second grizzly screen and a third grizzly screen. The second grizzly screen is positioned below the first grizzly screen; and the mounting assembly is used for movably hoisting the second grizzly screen in the vertical direction and can limit the second grizzly screen to a target position. According to the grizzly screen device, the second grizzly screen is arranged at the bottom of the first grizzly screen, the screening effect of the grizzly screen can be guaranteed, meanwhile, the grizzly screen device can adapt to different work schedules through movement of the second grizzly screen, and the safety of workers in the construction process is guaranteed.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of mining, in particular, to a grizzly device. BACKGROUND

[0002] In the process of mining extremely thin ore bodies, in order to reduce the amount of tunneling of shaft engineering, a personnel ore-passing ore-pass is needed to be constructed, in which the upper half is for personnel and the lower half is for ore-passing. Since personnel need to pass above the ore-passing opening of the ore-pass, the risk of personnel falling is easy to occur. In order to ensure the safety of personnel in the process of operating the personnel ore-passing ore-pass, a grizzly needs to be arranged at the opening of the ore-pass to prevent personnel from falling. The design core of the traditional grizzly structure mostly focuses on enhancing the structural stability of the grizzly itself, and there is still a deficiency in the anti-falling function. With the continuous deepening of the depth of the ore-pass, the position of the grizzly relative to the bottom of the shaft is gradually raised, and the design of the traditional grizzly mostly focuses on enhancing the structural strength of the grizzly itself to ensure the safety of the workers, and ignores the key role of the grizzly in the anti-falling function, which is easy to cause the workers to fall by accident. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present disclosure is to provide a grizzly device which can at least partially solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a grizzly device, comprising:

[0005] a first grizzly arranged on the opening of the ore-pass;

[0006] a second grizzly arranged in the ore-pass and below the first grizzly; and

[0007] a mounting assembly for movably hoisting the second grizzly in the vertical direction and capable of limiting the second grizzly to a target position.

[0008] Optionally, the mounting assembly comprises:

[0009] a traction rope adjustably connected in length in the vertical direction between the second grizzly and the sidewall of the roadway; and

[0010] a chuck for clamping on the traction rope, capable of loosening or clamping the traction rope to limit the connection length of the traction rope.

[0011] Optionally, the mounting assembly further comprises a first anchor rod inserted in the horizontal direction on the sidewall of the roadway, one end of the traction rope is connected with the second grizzly, and the other end is clamped by the chuck in the form of double strands after passing around the first anchor rod.

[0012] Optionally, the chuck comprises:

[0013] The card slot is configured as an arc structure and is used for accommodating the traction rope; and

[0014] The pressing part is connected with the card slot and is used for pressing the traction rope in the card slot.

[0015] Optionally, the installation assembly further comprises a second anchor rod, one end of the second anchor rod is inserted in the horizontal direction on the sidewall of the roadway below the first anchor rod, wherein two clamping heads are arranged at positions corresponding to the second anchor rod, and the two clamping heads are clamped on both sides of the other end of the second anchor rod in the lateral direction of the extension direction of the traction rope.

[0016] Optionally, the second anchor rod is arranged at multiple positions in the length direction of the traction rope.

[0017] Optionally, the second anchor rod is arranged at multiple positions in the length direction of the traction rope.

[0018] Optionally, the installation assembly is arranged at least three groups in the circumferential direction of the second screen.

[0019] Optionally, the aperture of the second screen is smaller than the aperture of the first screen.

[0020] Optionally, the first screen and the second screen are respectively made of metal.

[0021] Through the above technical solution, the first screen is arranged on the port of the chute, and the second screen is arranged below the first screen in the chute and can move up and down according to the work progress, so as to form a protection at the bottom of the first screen while ensuring the screening effect of the screen, and through the installation assembly for hoisting and limiting the position of the second screen, different working conditions can be adapted to ensure the safety of the workers in the construction process.

[0022] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0024] Figure 1 is a use state diagram of the screen device provided by the exemplary embodiment of the present disclosure;

[0025] Figure 2 is Figure 1 is a partial enlarged view of part A in FIG. 6;

[0026] Figure 3is a partial structural schematic view of a grizzly device provided by an example embodiment of the present disclosure;

[0027] Figure 4 is a layout structural schematic view of a grizzly device provided by another example embodiment of the present disclosure.

[0028] Legend of Reference Signs

[0029] 1 - first grizzly; 11 - first beam; 12 - second beam; 2 - second grizzly; 3 - mounting assembly; 31 - pulling rope; 311 - rope end; 32 - collet; 33 - first anchor rod; 34 - second anchor rod; 35 - baffle; 4 - chute; 41 - port; 5 - roadway. DETAILED DESCRIPTION

[0030] The detailed description of the present disclosure is described below in conjunction with the accompanying drawings. It should be understood that the detailed description described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0031] In the present disclosure, the positional words such as "inner" and "outer" are used in relation to the self outline of the corresponding component, and the positional words such as "upper", "lower", "top", "bottom", "horizontal", and "vertical" are defined based on the usage habit of the grizzly device, specifically, the drawing surface direction shown in the drawings can be referred to. The terms such as "first" and "second" used in the present disclosure are used to distinguish one element from another element, and do not have sequential and important meanings. In addition, the following description, when referring to the drawings, the same reference signs in different drawings represent the same or similar elements. Figure 1

[0032] Reference is made to Figures 1-4 ​The grid screen device can include a first grid screen 1, a second grid screen 2, and a mounting assembly 3. The first grid screen 1 can be arranged on the port 41 of the shaft 4 and used to preliminarily intercept large ore or sundries. The second grid screen 2 can be arranged below the first grid screen 1 and used to further filter the ore or sundries preliminarily screened, so as to greatly improve the screening accuracy and efficiency. Meanwhile, the second grid screen 2 can be used as a protective structure to protect the workers and prevent the workers from directly falling to the bottom of the shaft from the first grid screen 1. In addition, the second grid screen 2 can be arranged to be movable up and down in the shaft 4 relative to the first grid screen 1. When facing different working conditions and working progress, the position of the second grid screen 2 can be flexibly adjusted according to the working height. The mounting assembly 3 can be used to hoist the second grid screen 2 and limit the second grid screen 2 to a target position. On the one hand, the mounting assembly 3 can provide stable support for the second grid screen 2 to ensure that the grid screen device can always remain relatively stable during the working process of the workers, so as to prevent the second grid screen 2 from shaking. On the other hand, the precise positioning of the second grid screen 2 by the mounting assembly 3 can make the second grid screen 2 meet the height requirements of different construction scenes, thereby further enhancing the adaptability and practicality of the grid screen device.

[0033] According to the above technical solution, the first grid screen 1 is arranged on the port 41 of the shaft 4, and the second grid screen 2 movable up and down in the shaft 4 below the first grid screen 1 can be arranged according to the working progress (i.e. the depth of the shaft 4). In this way, the screening effect of the grid screen can be ensured, and at the same time, a protective structure can be formed at the bottom of the first grid screen 1. In addition, the position of the second grid screen 2 can be hoisted and limited by the mounting assembly 3, so as to adapt to different working conditions and ensure the safety of the workers during the construction process.

[0034] With reference to Figure 1 The mounting assembly 3 can include a traction rope 31 and a chuck 32. The traction rope 31 can be connected between the second grid screen 2 and the sidewall of the roadway 5 (which refers to the walking area above the shaft 4) in the vertical direction and with adjustable length, so as to flexibly adapt to different working conditions when hoisting the second grid screen 2, such as when the depth of the roadway 5 changes or the vertical height of the second grid screen 2 needs to be adjusted due to construction requirements. The connection length of the traction rope 31 can be changed to accurately position the hoisting height of the second grid screen 2, thereby greatly improving the flexibility and safety of the construction. The chuck 32 can be clamped on the traction rope 31 and can relax or clamp the traction rope 31, so as to limit the connection length of the traction rope 31, thereby effectively preventing the traction rope 31 from being excessively stretched or loosened, ensuring the hoisting stability of the second grid screen 2, and enhancing the safety and reliability of the entire grid screen device. In addition, the device is simple and practical, reduces the construction cost, and improves the construction efficiency.

[0035] With reference to Figure 1, the installation assembly 3 can further include a first anchor rod 33 inserted on the sidewall of the roadway 5 in a horizontal direction, one end of the traction rope 31 can be connected with the second grizzly screen 2, and the other end of the traction rope 31 can be clamped by the clamp head 32 in a double-stranded form after passing around the first anchor rod 33. It should be noted that the double-stranded form clamped by the clamp head 32 means that the rope end 311 of the traction rope 31 and the main body part of the traction rope 31 are clamped by the clamp head 32. In this way, the relative displacement between the rope end 311 of the traction rope 31 and the main body part of the traction rope 31 in the vertical direction can be effectively prevented, and the limiting effect on the connection length of the traction rope 31 is ensured. In addition, the first anchor rod 33 is inserted on the sidewall of the roadway 5, so as to provide a stable force point for the traction rope 31. When the second grizzly screen 2 shakes during hoisting, the first anchor rod 33 can effectively resist the force transmitted by the traction rope 31, so as to prevent the traction rope 31 from being displaced or falling off. At the same time, the position of the traction rope 31 is further locked by the cooperation of the clamp head 32 and the traction rope 31 passing around the first anchor rod 33, which greatly enhances the stability of the overall connection and ensures the safety of the operation process. In addition, during the specific installation process, the worker only needs to accurately insert the first anchor rod 33 on the sidewall of the roadway 5 according to the work requirement, and then connect the one end of the traction rope 31 with the second grizzly screen 2 and complete the installation of the other end with the clamp head 32 after passing around the first anchor rod 33, which greatly shortens the installation time and improves the construction efficiency.

[0036] With reference to Figure 1 , the clamp head 32 can include a clamping groove and a pressing part. The clamping groove can be configured as an arc structure for accommodating the traction rope 31, and when the rope end 311 of the traction rope 31 passes around the first anchor rod 33, it can be inserted into the clamping groove together with the main body part of the traction rope 31 in a lateral direction. The pressing part can be connected with the clamping groove so that the clamp head 32 is configured as a closed bottom ring structure, and the pressing part can apply a pressing force in the direction close to the clamping groove when cooperating with the clamping groove, so as to tightly fit the rope end 311 and the main body part of the traction rope 31 on the arc surface of the clamping groove, thereby limiting the connection length of the traction rope 31. In this way, the sliding or loosening of the clamp head 32 when the traction rope 31 is stressed can be effectively ensured, the restraining ability of the traction rope 31 is greatly enhanced, the limiting effect of the clamp head 32 on the connection length of the traction rope 31 is ensured, and the traction rope 31 is more reliable during hoisting of the second grizzly screen 2. In addition, the cooperation mode of the clamp head 32 and the traction rope 31 is relatively simple, so that the construction personnel can quickly complete the installation without complex procedures, and the installation efficiency is greatly improved.

[0037] With reference to Figure 1 and Figure 2, the mounting assembly 3 further comprises a second anchor rod 34, one end of the second anchor rod 34 is inserted on the sidewall of the roadway 5 below the first anchor rod 33 in the horizontal direction and is detachably connected to the sidewall of the roadway 5. Two clamping heads 32 mentioned above can be arranged at the position corresponding to the second anchor rod 34, and the two clamping heads 32 can be clamped on both sides of the other end of the second anchor rod 34 in the extension direction of the traction rope 31. So that the rope end 311 and the main body part of the traction rope 31 can be clamped together on the end of the second anchor rod 34, so as to realize the positioning of the traction rope 31 through the second anchor rod 34, and prevent the traction rope 31 from deviating in the left-right direction. In addition, in the embodiment provided in the present disclosure, the traction rope 31 can be made of metal, for example, the material of the traction rope 31 can be steel, so as to ensure the rigidity of the traction rope 31 and ensure the reliability of the hoisting of the second screen 2.

[0038] With reference to Figure 1 , the second anchor rod 34 can be arranged at intervals along the length direction of the traction rope 31, that is, a plurality of second anchor rods 34 can be arranged at intervals in the depth direction of the shaft 4, so as to fix the traction rope 31 on the sidewall of the shaft 4, thereby further improving the reliability of the hoisting of the second screen 2. Even if a certain second anchor rod 34 fails, other second anchor rods 34 still limit the position of the traction rope 31, so as to effectively maintain the stability of the second screen 2. In addition, in the embodiment provided in the present disclosure, when the properties of the rock-soil body at different depths and positions of the shaft 4 are different, a plurality of second anchor rods 34 can be arranged at intervals according to the specific conditions of the rock-soil body.

[0039] With reference to Figure 1 and Figure 2 , the end of the second anchor rod 34 connected with the traction rope 31 can be provided with a baffle 35, and the outer diameter of the baffle 35 can be greater than the outer diameter of the second anchor rod 34. In this way, when the traction rope 31 is connected in the manner shown in Figure 1 , the baffle 35 can be laterally resisted on the traction rope 31 in the direction perpendicular to the paper surface of Figure 1 , so that the traction rope 31 can always be attached to the sidewall of the shaft 4, thereby effectively avoiding the traction rope 31 moving away from the sidewall of the shaft 4, improving the stability of the traction rope 31 and reducing the shaking amplitude of the second screen 2. In the embodiment provided in the present disclosure, the baffle 35 can also be arranged on the first anchor rod 33, thereby further improving the stability of the traction rope 31 hung on the first anchor rod 33.

[0040] With reference to Figure 1 and Figure 3The mounting assembly 3 can be arranged at least three groups along the circumference of the second grizzly screen 2, and the multiple mounting assemblies 3 can be equidistantly spaced, so that the second grizzly screen 2 and the weight carried by the second grizzly screen 2 can be evenly distributed to each mounting assembly 3, avoiding that a single mounting assembly 3 bears too large load, reducing the risk of local overload, and making the hoisting process of the second grizzly screen 2 more stable.

[0041] Referring to Figure 3 and Figure 4 According to some embodiments provided by the present disclosure, the aperture of the second grizzly screen 2 can be smaller than the aperture of the first grizzly screen 1, and in a more specific use process, concentrated crushing of large blocks can be performed on the first grizzly screen 1, and since the mesh of the second grizzly screen 2 is slightly smaller, the work of the staff can be prevented from falling without hindering the ore drawing work, thereby improving the safety of the stope.

[0042] According to the embodiments provided by the present disclosure, the first grizzly screen 1 and the second grizzly screen 2 can be made of metal respectively, so as to ensure the use strength and rigidity of the first grizzly screen 1 and the second grizzly screen 2, and ensure the safety in use. As shown in Figure 3 The first grizzly screen 1 can include a plurality of first beams 11 and a plurality of second beams 12, the first beams 11 and the second beams 12 can be round steel with a diameter of 30 mm, and the first beams 11 and the second beams 12 can be arranged perpendicular to each other in a horizontal plane and fixedly connected to each other by welding, thereby forming a mesh grizzly screen, and the mesh can be 500*500 mm, which can avoid damage to the first grizzly screen 1 due to long-term operation, ensure the durability, and also ensure the use effect. The forming method of the second grizzly screen 2 can be the same as that of the first grizzly screen 1, which will not be described here. In the embodiment shown in Figure 4 The outer contour of the first grizzly screen 1 and the second grizzly screen 2 can be square, and in other embodiments, it can also be circular or other shapes, which are not limited by the present disclosure. The outer diameter of the first grizzly screen 1 can be greater than the inner diameter of the port 41 of the ore pass 4, so as to ensure the stability of the first grizzly screen 1 arranged at the port 41.

[0043] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0044] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present disclosure will not describe various possible combinations again.

[0045] Furthermore, the various embodiments of the present disclosure can be arbitrarily combined with each other unless they contradict each other, and it should be understood that the same should be construed as being included in the disclosure of the present disclosure.

Claims

1. A grizzly device, characterized in that, The application relates to a screen installation assembly for a mine shaft, comprising: a first screen installed on the port of a mine shaft; a second screen installed in the mine shaft below the first screen; and a mounting assembly for movably hoisting the second screen in a vertical direction and limiting the second screen to a target position. The mounting assembly comprises:

2. The grizzly device of claim 1, wherein, a traction rope connected between the second screen and a sidewall of the mine shaft in a vertical direction and adjustable in length; and a clamp head for clamping the traction rope and capable of loosening or clamping the traction rope to limit the connection length of the traction rope. The mounting assembly further comprises a first anchor rod inserted into the sidewall of the mine shaft in a horizontal direction, one end of the traction rope is connected to the second screen, and the other end of the traction rope is clamped by the clamp head in a double-stranded form after passing through the first anchor rod.

3. The grizzly device of claim 2, wherein, The clamp head comprises:

4. The grizzly device of claim 3, wherein, a clamping groove configured as an arc structure and used for accommodating the traction rope; and a pressing part connected to the clamping groove and used for pressing the traction rope in the clamping groove. The mounting assembly further comprises a second anchor rod, one end of the second anchor rod is inserted into the sidewall of the mine shaft below the first anchor rod in a horizontal direction, wherein two clamp heads are arranged at positions corresponding to the second anchor rod, and the two clamp heads are clamped on both sides of the other end of the second anchor rod in a lateral direction along the extension direction of the traction rope.

5. The grizzly device of claim 4, wherein, The second anchor rod is arranged in multiple sections along the length direction of the traction rope.

6. The grizzly device of claim 5, wherein, The end of the second anchor rod connected to the traction rope is provided with a baffle, and the outer diameter of the baffle is greater than the outer diameter of the second anchor rod.

7. The grizzly device of claim 5, wherein, The mounting assembly is arranged in at least three groups in a circumferential direction of the second screen.

8. The grizzly device of claim 1, wherein, The aperture of the second screen is smaller than the aperture of the first screen.

9. The grizzly device of claim 1, wherein, The first screen and the second screen are respectively made of metal.

10. The grizzly device of claim 1, wherein, ​

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