Semi-fixed crushing station

Abstract

The utility model discloses a semi-fixed crushing station, and belongs to the field of ore stripping and crushing of opencast coal mines. The semi-fixed crushing station comprises a hopper, a plate type feeder module, a discharging sealing-tape machine and a girder; a hopper support is fixedly arranged at the bottom of the hopper and welded to the tail of the girder. The crusher module is installed on one side of the hopper and the plate type feeder module, the hopper support and the bottom of the girder are fixedly connected with a buoy, the buoy comprises a buoy base, two supporting tables fixed to the upper surface of the buoy base and supporting plates fixed to the upper surfaces of the supporting tables, and the top faces of the supporting plates are connected with the hopper support and the bottom of the girder; the buoy is of a box-shaped structure formed by welding steel plates. The beneficial effects are that: the total ground supporting area of the buoy is increased, and the stability of the crushing station is ensured; and the semi-fixed crushing station can be moved according to field requirements, and the moving efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of ore stripping and crushing in open-pit coal mines, in particular to a semi-fixed crushing station. Background Art

[0002] In mining operations, crushing stations are widely used, and their main task is to provide qualified particulate matter for the grinding process. There are mainly three types of such equipment: fixed crushing stations, semi-fixed crushing stations, and mobile crushing stations. Fixed crushing stations remain basically immobile throughout the service cycle. However, considering the expansion of the mine, the transportation distance will gradually become longer, which will lead to a continuous increase in transportation costs. Relatively speaking, mobile crushing stations, due to their good flexibility, can adjust their positions according to the changes in mining and stripping operations. However, their processing capacity is generally average and they are not suitable for processing large-sized ores. Semi-fixed crushing stations can exhibit superior performance in adapting to the scale of the mine. Their disassembly and installation are very convenient, and they can be moved according to the specific location of ore output, simplifying the transportation process. This makes them outstanding in reducing the total operating cost of the mine, so they are accepted by the majority of users.

[0003] The commonly used way for the bottom support of semi-fixed crushing stations is a steel frame structure. For example, in CN106179699B. In CN218308452U, an H-shaped steel frame is used to support the main structure of the modular mobile crusher. The support structure is simple. When the amount of crushed ore is large, it cannot stably support, so only a small amount of ore can be put into the crusher, and the crushing efficiency is very low. Summary of the Utility Model

[0004] In order to ensure safety during the crushing process and improve the crushing efficiency, the utility model provides a semi-fixed crushing station. By using a floating drum structure as the bottom support structure, the overall structure of the semi-fixed crushing station can be stabilized, the equipment safety of the crushing station can be ensured, and at the same time, the crushing efficiency can be improved.

[0005] The technical solution provided by the utility model is as follows:

[0006] A semi-fixed crushing station includes a hopper, a plate feeder module, a discharge belt conveyor, and a girder; a hopper support is fixedly arranged at the bottom of the hopper, and the hopper support is welded to the tail of the girder; a crusher module is installed on one side of the hopper and the plate feeder module, and an electrical room module is installed on one side of the crusher module. The crusher module and the electrical room module are fixedly connected to the girder; the plate feeder module is fixedly arranged obliquely on the girder, the bottom end of the plate feeder module corresponds to the bottom port of the hopper, and the top end of the plate feeder module is located above the crusher module; the discharge belt conveyor is fixedly arranged obliquely at one end of the girder away from the plate feeder module, and the crusher module corresponds to the bottom of the discharge belt conveyor; a floating drum is fixedly connected to the hopper support and the bottom of the girder. The floating drum includes a floating drum base, two support platforms fixed on the upper surface of the floating drum base, and a support plate fixed on the upper surface of the support platform. The top surface of the support plate is connected to the hopper support and the bottom of the girder; the floating drum is a box-shaped structure welded by steel plates; stiffeners are arranged in the internal space of the floating drum base. The stiffeners are composed of webs and flange plates located on both sides of the webs, and the flange plates are welded and fixed to the inner surface of the floating drum base.

[0007] Further, the front end of the receiving port of the hopper is a U-shaped quadrilateral structure.

[0008] Further, the hopper support includes a support base, a connecting piece on the upper surface of the end of the support base, and a support arm above the connecting piece. The support base and the connecting piece are connected by a flange; the hopper support is a U-shaped structure.

[0009] Further, the height of the hopper wall of the hopper is 9.9 meters, and the angle with the horizontal plane is 55 degrees.

[0010] Further, bolt holes are arranged on the support plate, and the support plate is bolted to the hopper support and the bottom of the girder.

[0011] Further, wear-resistant linings are arranged on the inner surface of the hopper.

[0012] The utility model has the following beneficial effects:

[0013] (1). The total ground support area of the floating drum is increased, ensuring the stability of the crushing station;

[0014] (2). The semi-fixed crushing station can be relocated according to the on-site needs, and the relocation efficiency is high;

[0015] (3). The specific structural design of the hopper improves the crushing efficiency, and at the same time reduces the impact damage of the material on the semi-fixed crushing station, and the semi-fixed crushing station has a long service life. Description of the Drawings

[0016] Figure 1 It is a three-dimensional view of the semi-fixed crushing station;

[0017] Figure 2 This is a top view of a semi-stationary crushing station;

[0018] Figure 3 This is the front view of the semi-stationary crushing station;

[0019] Figure 4 It is a three-dimensional diagram of the buoy;

[0020] Figure 5 is a top view of the buoy;

[0021] Figure 6 for Figure 5 Sectional view along AA direction;

[0022] Figure 7 is a side view of the buoy;

[0023] Figure 8 is a three-dimensional diagram of a stiffener;

[0024] Figure 9 is a side view of the stiffener;

[0025] Figure 10 It is the front view of the stiffener;

[0026] Figure 11 is a three-dimensional diagram of the hopper support;

[0027] Figure 12 It is the front view of the hopper support;

[0028] Figure 13 A top view of the hopper support.

[0029] in,

[0030] 100, hopper; 200, plate feeder module; 300, crusher module; 400, electrical room module; 500, discharge belt conveyor; 600, beam; 700, pontoon; 701, pontoon base; 702, support platform; 703, support plate; 704, stiffener; 7041, web; 7042, flange plate; 800, hopper bracket; 801, bracket base; 802, connector; 803, support arm. DETAILED DESCRIPTION

[0031] To make the technical problems, technical solutions, and advantages to be solved by the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0032] As Figures 1 to 3 shown, the semi-fixed crushing station includes a hopper 100, a plate feeder module 200, a discharge belt conveyor 500, and a main beam 600; a crusher module 300 is installed on one side of the hopper 100 and the plate feeder module 200, and an electrical room module 400 is installed on one side of the crusher module 300. The crusher module 300 and the electrical room module 400 are bolted to the main beam 600. The plate feeder module 200 is inclined and fixedly arranged on the main beam 600. The bottom end of the plate feeder module 200 corresponds to the bottom port of the hopper 100, and the top end of the plate feeder module 200 is located above the crusher module 300. The discharge belt conveyor 500 is inclined and fixedly arranged at one end of the main beam 600 away from the plate feeder module 200, and the bottom of the crusher module 300 corresponds to the discharge belt conveyor 500. The truck unloads the overburden into the hopper 100 of the semi-fixed crushing station on the unloading platform at the end of the short-distance hauling route. The overburden falls into the plate feeder module 200. The plate feeder module 200 conveys the material to the hopper discharge port through variable frequency speed regulation drive. The overburden falls into the crusher module 300 through this. The overburden with a maximum feed size of 1500 mm is crushed into a maximum size of 400 mm by the double-toothed roll screening crusher, and is discharged through the discharge port of the crusher module 300, and then the material is discharged into the belt conveying device through the discharge belt conveyor 500.

[0033] Specifically, the front end of the receiving port of the hopper 100 is a U-shaped quadrilateral structure, and the front end of the receiving port of the hopper 100 is connected to the unloading platform, meeting the requirement of simultaneous unloading of four transport trucks.

[0034] A hopper support 800 is fixedly arranged at the bottom of the hopper 100 through bolts to support the weight of the receiving port end of the hopper 100.

[0035] Floaters 700 are bolted to both sides of the bottom of the hopper support 800 and the main beam 600, as Figure 3 shown. The structure of the floater 700 is as Figures 4 to 7As shown in the figure, the pontoon 700 includes a pontoon base 701, two support platforms 702 installed on the upper surface of the pontoon base 701, and a support plate 703 on the upper surface of the support platforms 702. Bolt holes are provided on the support plate 703, and the support plate 703 is bolted to the hopper support 800 and the bottom of the girder 600. The four bottom corners of the semi-fixed crushing station are supported by the pontoons 700. The overall structure of the equipment is stable, the support area is large, and the structure is subjected to less torsion. The grounding area of the pontoon satisfies that the pressure generated by all loads is less than the designed grounding specific pressure of 260 kPa. The ground compaction reaches a flatness of 1 / 40, and no concrete construction is required, reducing the investment cost and relocation cost. Compared with the support surface of the double crawlers being 31 square meters, the ground support area of the pontoon 700 is 42 square meters. The total ground support area of the pontoon 700 increases, providing guarantee for the additional support force required for the self-weight of the hopper 100 and the weight of the material. At the same time, the replacement of the double crawler scheme by the pontoon 700 can make the length and width of the anti-overturning line of the total support surface formed between the pontoons both greater than the length and width of the anti-overturning line formed by the double crawlers, which is more suitable for the impact on the hopper wall caused by the outside unloading of the truck, ensuring the stability of the crushing station, and having good effects in terms of anti-overturning, reducing impact vibration and swing. At the same time, it also better solves the vibration problem of the upper driver's cab, making the working environment of the operator more comfortable. The pontoon 700 is welded into a box structure with Q345E steel plates, which can meet the requirements of lifting ordinary equipment alone. When the towing equipment has sufficient capacity, it can also be transported directly by a combined multi-wheel truck / self-propelled modular transport vehicle without demolition and reassembly, so as to save relocation handling and mining and loading time.

[0036] To enhance the strength of the pontoon base 701, as Figure 6 shown, stiffeners 704 are arranged in the internal space of the pontoon base 701. The stiffeners 704 are composed of webs 7041 and flange plates 7042 located on both sides of the webs. As Figures 8 to 10 shown, the flange plates 7042 are welded and fixed to the inner surface of the pontoon base 701.

[0037] The structure of the hopper support 800 is as Figures 11 to 13 shown. The hopper support 800 includes a support base 801, a connecting piece 802 on the upper surface of the end of the support base 801, and a support arm 803 above the connecting piece 802. The support base 801 and the connecting piece 802 are connected by a flange. The end of the support base 801 is welded to the tail of the girder 600. The hopper support 800 is welded by steel plates, and Q345E steel is selected to ensure the support strength of the hopper support 800. The hopper support 800 adopts a U-shaped structure to adapt to the shape of the hopper 100, and the hopper support 800 is welded to the tails of two girders 600.

[0038] According to the design relationship between the hopper 100 and the unloading space of the semi-fixed crushing station, the hopper 100 has the capacity and position to meet the requirements of four transport trucks unloading at the same time, and is approximately 4.5 times the vehicle-mounted cubic meters. Taking into account the unloading capacity of the truck, the load of the plate feeder module 200, the supporting strength of the steel structures such as the buoy 700, the hopper bracket 800 and the beam 600 at the bottom of the semi-fixed crushing station, etc., the hopper wall height of the hopper 100 is selected to be 9.9 meters, and the angle with the horizontal plane is 55 degrees. When unloading, the material falls on the plate feeder module 200 on the hopper wall to reduce the impact damage of the stripping material on the plate feeder module 200.

[0039] The inner surface of the hopper 100 is equipped with a wear-resistant lining plate, and the size of the lining plate is easy to replace. In particular, the wear-resistant lining plate is selected from NM400 wear-resistant lining plate, which is a high-strength wear-resistant steel plate. NM400 has a very high mechanical strength. The surface hardness of this product usually reaches 360-450HB, and its mechanical properties are 3 to 5 times that of ordinary low-alloy steel plates. It can significantly improve the wear resistance of the hopper 100, thereby increasing the service life of the hopper and reducing production costs.

[0040] The semi-fixed crushing station supported by pontoon 700 can be used in smaller foundation pits, reducing the investment cost of foundation pits and retaining walls. At the same time, it controls the hopper shape to a reasonable size to prevent frequent shutdowns caused by equipment overload.

[0041] When the semi-fixed crushing station needs to be relocated, the equipment structure is complete after the dismantling of the discharging belt conveyor 500, and the upper structures such as the hopper 100, the plate feeder module 200, the crusher module 300 and the electrical room module 400 do not need to be disassembled. After the buoy 700 is arranged, the hopper 100, the plate feeder module 200, the crusher module 300 and the electrical room module 400 are transported to the place by a multi-wheel flatbed truck, accurately fall on the top of the buoy 700, and are bolted. Improve the efficiency of relocation, reduce the cost of repeated disassembly and installation, and the resulting extended debugging time and even possible failures. The upper structure can be transported separately as a whole by an ordinary flatbed truck without further disassembly. The modular main structure of the semi-fixed crushing station can be relocated in the mine within one work shift. The discharging belt conveyor 500 of the semi-fixed crushing station can be installed and debugged within three days. If preparations are made in advance, for example, two weeks in advance, the preparatory work such as foundation pit excavation, compaction and leveling and retaining wall support can be completed in advance. The relocation of the semi-fixed crushing station can be completed within five days of shutdown. The economic cost and time cost of relocation are much lower than the relocation cost of other types of semi-fixed crushing stations. Compared with the semi-fixed crushing stations with a large number of concrete foundations, anchor bolt connections, and non-modular designs that are still used in most domestic mines, in some cold areas, concrete construction cannot be carried out in winter or the construction quality cannot be guaranteed, the short relocation cycle advantage of the semi-fixed crushing station in the embodiment of the utility model is more prominent.

[0042] The semi-fixed crushing station of the utility model can meet the needs of a large amount of ore crushing while having high flexibility and mobility, and can adapt to the changes in mining and stripping operations in mines.

[0043] Finally, it should be noted that: the above-mentioned embodiments are only specific implementation manners of the utility model, which are used to illustrate the technical solutions of the utility model rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the utility model can still modify the technical solutions recorded in the foregoing embodiments, or can easily conceive of changes, or make equivalent replacements for some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model. All should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the protection scope of the claims.

Claims

1. A semi-stationary crushing station, comprising a hopper (100), an apron feeder module (200), a discharge belt conveyor (500) and a beam (600); A hopper bracket (800) is fixedly arranged at the bottom of the hopper (100), and the hopper bracket (800) is welded to the rear of the beam (600); A crusher module (300) is installed on one side of the hopper (100) and the plate feeder module (200), an electrical room module (400) is installed on one side of the crusher module (300), and the crusher module (300) and the electrical room module (400) are fixedly connected to the beam (600); The apron feeder module (200) is fixedly arranged on the beam (600) in an inclined manner, the bottom end of the apron feeder module (200) corresponds to the bottom port of the hopper (100), and the top end of the apron feeder module (200) is located above the crusher module (300); The discharge belt conveyor (500) is tilted and fixedly arranged at one end of the beam (600) away from the plate feeder module (200), and the crusher module (300) corresponds to the bottom of the discharge belt conveyor (500); Features: The hopper support (800) and the bottom of the beam (600) are fixedly connected with a buoy (700), and the buoy (700) is a box-shaped structure formed by welding steel plates; The buoy (700) comprises a buoy base (701), two support platforms (702) fixed on the upper surface of the buoy base (701), and a support plate (703) fixed on the upper surface of the support platform (702), wherein the top surface of the support plate (703) is connected to the hopper support (800) and the bottom of the beam (600); A stiffener (704) is provided in the inner space of the buoy base (701), and the stiffener (704) is composed of a web (7041) and flange plates (7042) located on both sides of the web (7041), and the flange plates (7042) are welded and fixed to the inner surface of the buoy base (701).

2. The semi-stationary crushing station according to claim 1, characterized in that: The front end of the receiving port of the hopper (100) is a U-shaped four-sided structure.

3. The semi-stationary crushing station according to claim 2, characterized in that: The hopper support (800) comprises a support base (801), a connecting piece (802) on the upper surface of the end of the support base (801), and a support arm (803) on the upper part of the connecting piece (802), and the support base (801) and the connecting piece (802) are connected by a flange; The hopper support (800) is a U-shaped structure.

4. The semi-stationary crushing station according to claim 3, characterized in that: The hopper wall of the hopper (100) has a height of 9.9 meters and an angle of 55 degrees to the horizontal plane.

5. The semi-stationary crushing station according to claim 1, characterized in that: Bolt holes are provided on the support plate (703), and the support plate (703) is connected to the hopper support (800) and the bottom of the beam (600) by bolts.

6. The semi-stationary crushing station according to claim 1, characterized in that: The inner surface of the hopper (100) is provided with a wear-resistant lining.

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