CN103551221A - Double-roller type ore crusher - Google Patents

Abstract

The present invention relates to mining machinery, and provides a double-roller type ore crusher, which includes a frame, a double-roller crushing mechanism, an engine, and a transmission device arranged on the frame, and a walking mechanism arranged on the side or bottom of the frame. The roller crushing mechanism includes the first pair of rollers and the second pair of rollers. The first pair of rollers is fixed on the frame, and the second pair of rollers is slidably connected to the frame. A pre-tensioning mechanism for the movement tendency of the first roller assembly; the first roller assembly and the second roller assembly are respectively connected to an engine through a transmission device. The ore crusher not only has the advantages of simple structure, good crushing effect, convenient movement and long service life.

Description

Roller Ore Crusher

technical field

The invention relates to a mining machine, in particular to a double-roll ore crusher.

Background technique

Roller crusher is a kind of mining machinery, mainly used for crushing ore. Roller Crusher (Double Roller Crusher) It is suitable for fine crushing operations with a feed particle size of less than 80mm and a finished product particle size requirement of 50mm-20mm, such as using pebbles and construction waste to make artificial sand, mining finely crushed iron ore, quartz stone, ceramic industry Shred raw materials. It is suitable for coarse and intermediate crushing of brittle blocky materials in cement, chemical industry, electric power, mining, metallurgy, building materials, refractory materials, coal mines and other industries. materials are crushed. Especially in the coal industry, the use of double rollers to crush the raw coal can be directly crushed as long as the iron and impurities are removed without removing gangue. The crushed materials have uniform particle size and low over-crushing rate, thus simplifying the coal preparation process and reducing the crushing rate. investment and production costs.

The roller crusher first appeared in 1806 and has a history of more than 200 years. It is the oldest crusher. Because of its simple structure, easy to manufacture, especially less powder crushing, it can crush sticky and wet materials, so it is widely used in the crushing operation of medium and low hardness materials. However, the traditional double-roll crusher has disadvantages such as low production capacity, high equipment quality, poor ability to crush large pieces of material, poor mobile performance, high noise, small crushing ratio and high wear rate, which largely limits double-roll crushing. The scope of application of machines in engineering. However, in chemical, coal, coking and other industries, there are strict requirements on the particle size, particle shape and over-crushing of crushed products, and roll crushers must be used.

The overall scale of my country's crushing machinery manufacturing industry has entered the ranks of major international production countries, but the overall competition and development potential are still unable to compete with developed countries. At present, domestic high-end users and basic components for export products mainly rely on imports. Increase, is bound to be subject to the constraints of foreign competitors and suppliers. Therefore, the focus of the revitalization and development of crushing machinery in the future should be placed on basic technology and basic components to improve the level of independent development.

Contents of the invention

Aiming at the problems of the current crushers, the present invention proposes a double-roller type ore crusher, which is easy to move and has a wide range of crushing applications.

The double-roller type ore crusher is characterized in that the double-roller type ore crusher includes a frame, a double-roller crushing mechanism, an engine, and a transmission device arranged on the frame, and a walking mechanism arranged on the side or bottom of the frame , the roller crushing mechanism includes a roller assembly 1 and a roller assembly 2, the roller assembly 1 is fixed on the frame, and the roller assembly 2 is slidably connected to the frame, and the roller assembly 2 is installed on the frame There is a pre-tensioning mechanism that makes the roller assembly 2 have a tendency to move toward the roller assembly 1; the roller assembly 1 and the roller assembly 2 are respectively connected to an engine through a transmission device.

A slide table is arranged on the frame, and the slide table is slidably connected with the frame, and the above-mentioned pair of roller assemblies and the engine and transmission device driving the pair of roller assemblies are all fixedly connected on the slide table.

A positioning structure is provided between the slide table and the frame, and the positioning structure includes a positioning plate and a fastener, and several positioning holes are arranged on the slide table and the frame, and the positioning plate passes through the fastener Connect with slide table and frame respectively.

The pre-tightening mechanism includes a fixed shaft, two flanges, a small spring, and a large spring. The inner end of the fixed shaft is fixedly connected to the slide table, and the outer end is connected to the frame; 1. The two flanges are sleeved on the fixed shaft, the large spring is sleeved outside the small spring, and the two ends of the small spring and the large spring are pressed against the two flanges respectively.

An adjustment mechanism for adjusting the preload of the small spring and the large spring is provided between the outer end of the fixed shaft and the frame.

The adjustment mechanism includes a hollow screw sleeved on the outer end of the above-mentioned fixed shaft, and a nut fixedly connected to the frame. The screw is threaded with the nut; On the flange, the outer end of the screw sticks out of the frame. The outer end of the screw is also provided with a structure for screwing the screw, such as an outer hexagonal structure, an inner hexagonal structure, a radially through hole, and the like.

The pre-tightening mechanism includes a fixed shaft, two flanges, a small spring, a large spring, and an adjustment mechanism for adjusting the pre-tightening force of the small spring and the large spring; one end of the fixed shaft is fixedly connected to the slide table, and the The adjustment mechanism is arranged between the other end of the fixed shaft and the frame; the small spring, the large spring and the two flanges are sleeved on the fixed shaft, the large spring is sleeved outside the small spring, and the The two ends of the small spring and the large spring are respectively pressed against the two flanges; the adjustment mechanism includes a hollow screw sleeved on the outer end of the above-mentioned fixed shaft, and a nut fixedly connected to the frame. It is threadedly connected with the nut; the inner end of the screw is pressed against the flange located at the outer end of the fixed shaft, and the outer end of the screw extends out of the machine frame.

The first roller assembly or the second roller assembly respectively includes a driving shaft, a roller sleeved on the driving shaft, and two positioning discs and a tightening plate arranged between the driving shaft and the roller to connect the roller to the driving shaft. firmware.

There are two tapered holes in the roller that gradually increase towards the two ends of the roller, and the middle part of the driving shaft has a raised step, and the distance between the two tapered holes is equal to the step in the axial direction. The length of the two positioning discs has an outer tapered surface that matches the conical hole, and the two positioning discs are arranged on both sides of the step and pressed against the step respectively, and the above-mentioned fasteners connect the two positioning discs.

The outer surface of the roller includes several concave and convex arc surfaces arranged at intervals and formed continuously. When the first pair of rollers and the second pair of rollers are paired, the concave arc surfaces of the two rollers cooperate with the convex arc surfaces.

Both the concave and convex arc surfaces are provided with roller teeth.

The transmission device includes a belt transmission device, a secondary speed reducer and a chain transmission device connected in sequence, the engine is connected to the belt transmission device, and the first roller assembly and the second roller assembly are respectively connected to a chain transmission device.

The belt transmission device includes a belt, a primary pulley fixedly connected to the output shaft of the engine, and a secondary pulley fixedly connected to the input shaft of the secondary reducer, and the belt is arranged on the primary pulley and the secondary pulley.

The chain transmission device includes a chain, a main sprocket fixed to the output shaft of the secondary reducer, and a secondary sprocket fixed to the above-mentioned driving shaft, and the chain is arranged on the main sprocket and the secondary sprocket superior.

The traveling mechanism includes two rows of wheels which are arranged in parallel at the bottom or side of the frame and are composed of at least two rolling wheels, and crawlers are provided on the two rows of wheels. Depending on the work site, the crawler can be made of rubber or metal surface. The crawler is set on the two rolling wheels, which is convenient for transportation. The crawler walks, does not damage the road surface, and has a wide range of applications. A certain amount of processing can be carried out on muddy and soft surfaces. The requirements for the site are low, and there is no need to stretch out the legs. Processing, saving time, increasing the stability and scope of application of the machine.

The engine is an electric motor or a diesel engine.

The beneficial effects of the present invention are:

(1) The non-cylindrical design of the roller part of the crusher improves the single working mechanism of the roller crusher and increases the productivity; the roller part of the roller crusher adopts a non-cylindrical design, and the roller is concave , Convex surface matching, this innovative design increases the angle of engagement between the ore particles and the rollers, so that the angle of engagement between the rollers changes with the rotation, making the crushing of the crusher larger than that of the traditional pair of rollers; and in the roller Wear-resistant roller teeth are added on the surface, so that the crushing process has the effect of splitting and crushing, forming a mechanism with higher productivity.

(2) The pre-tensioning mechanism adopts the structural improvement design of the mother-child spring type. The design safety factor of the device is higher than that of a single spring, the material is saved, the space is smaller, and it has the function of overload protection, so that the movement of the roller can be fully realized. Protection, to solve the problem of insufficient rebound and short service life of ordinary single springs, greatly improve the resilience of springs, ensure the supporting force of springs, and effectively extend the service life of springs.

(3) Adding a crawler-type walking mechanism to the crushing body can facilitate transportation, crawler walking, no damage to the road surface, and a wide range of adaptation. A certain amount of processing can be carried out on muddy and soft surfaces. The requirements for the site are low, and no need Stretch outriggers, you can process, save time, increase the stability and scope of application of the machine.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a roller-type ore crusher.

Figure 2 is a front view of the roller crushing mechanism.

FIG. 3 is a top view of FIG. 2 .

Fig. 4 is an exploded view of the roller crushing mechanism.

Fig. 5 is a sectional view of the roller.

Figure 6 is a front view of the pretensioning mechanism.

Fig. 7 is a schematic cross-sectional structure diagram of A-A in Fig. 6 .

Fig. 8 is a schematic diagram of the state of crushing large rocks by the double-roller ore crusher.

Fig. 9 is a schematic diagram of the state of crushing small stones by the roller-type ore crusher.

In the figure, the frame 1, the engine 2, the first roller assembly 3a, the second roller assembly 3b, the roller 31, the tapered hole 32, the roller teeth 33, the drive shaft 34, the step 35, the positioning plate 36, the outer cone surface 37, Belt drive 4, belt 41, primary pulley 42, secondary pulley 43, secondary reducer 5, chain drive 6, chain 61, primary sprocket 62, secondary sprocket 63, traveling mechanism 7, rolling wheel 71, crawler belt 72 , preload mechanism 8, fixed shaft 81, flange plate 82, small spring 83, large spring 84, screw rod 85, nut 86, slide table 9, positioning plate 10.

Detailed ways

The present invention will be further described below in conjunction with FIG. 1 to FIG. 9 .

Referring to Fig. 1, the roller-type ore crusher includes a frame 1, a slide table 9, a roller crushing mechanism arranged on the frame 1, an engine 2, a transmission device, a pre-tensioning mechanism 8, and Or the running gear 7 at the bottom. The engine 2 is an electric motor or a diesel engine.

Referring to Figures 2, 3, 4, 5, 8, and 9, the roller crushing mechanism includes a roller assembly one 3a and a roller assembly two 3b, and the roller assembly one 3a is connected with a transmission device and an engine 2, and the roller assembly two 3b It is connected with a transmission device and an engine 2 . Both the first roller assembly 3a and the second roller assembly 3b include a hollow roller 31, a drive shaft 34, two positioning discs 36 and fasteners, and the fasteners in the present invention are bolts and nuts. There are two conical holes 32 that gradually increase towards the two ends of the roller 31 inside the roller 31, and the middle part of the drive shaft 34 has a raised step 35, and the distance between the two conical holes 32 is equal to the length of the step 35 in the axial direction ; The two positioning discs 36 have an outer tapered surface 37 with the same inclination as the conical hole 32 and six uniformly distributed through holes penetrating the positioning disc 36 in the axial direction. During installation, the driving shaft 34 is arranged in the roller 31, and the two positioning disks 36 are sleeved from the two ends of the driving shaft 34 and the conical hole 32 moves inward until it leans against the step 35 of the driving shaft 34, and then the The fastener is arranged on the through holes of the two positioning discs 36, and the roller 31 and the driving shaft 34 are connected by the tapered hole 32 of the roller 31, the outer tapered surface 37 of the positioning disc 36, the step 35 of the driving shaft 34 and the fastener. connected together. The distance between the two conical holes 32 and the equidistant setting of the steps 35, and the equidistant setting of the conical holes 32 and the outer conical surface 37 ensure that the installation of the two pairs of roller assemblies is accurately positioned. On the outer surface of the roller 31, there are several concave and convex arc surfaces arranged at intervals and continuously forming a quincunx shape, and wear-resistant roller teeth 33 extending in the axial direction are provided on the concave and convex arc surfaces. The first roller assembly 3a is fixed on the frame 1, the second roller assembly 3b is fixed on the slide table 9, the slide table 9 is slidably connected to the frame 1, the first roller assembly 3a and the second roller assembly 3b are opposite to the roller , the concave arc surface on the first roller assembly 3a cooperates with the convex arc surface on the second roller assembly 3b, or the convex arc surface on the first roller assembly 3a cooperates with the concave arc surface on the second roller assembly 3b , the innovative design increases the bite angle between the ore particles and the roller. The non-cylindrical quincunx-shaped innovative design of the roller part of the crusher improves the single working mechanism of the roller crusher and increases productivity; the non-cylindrical quincunx-shaped design of the roller part of the roller crusher This innovative design increases the angle of engagement between the ore particles and the roller 31, so that the angle of engagement between the rollers 31 changes with the rotation, making the crushing of the crusher larger than that of the traditional pair of rollers; The wear-resistant roller teeth 33 make the extrusion and crushing process have the effect of splitting and crushing, forming a mechanism with higher productivity.

Referring to Fig. 6 and Fig. 7, the pretensioning mechanism 8 is arranged between the frame 1 and the second roller assembly 3b. On the slide table 9, and the slide table 9 is slidingly connected with the frame 1, therefore, the pretension mechanism 8 can be directly arranged between the slide table 9 and the frame 1, and the setting of the pretension mechanism 8 makes the roller assembly two 3b It has a tendency to move in the direction of the roller assembly-3a. The preload mechanism 8 includes a fixed shaft 81, two flanges 82, a small spring 83, a large spring 84, and an adjustment mechanism for adjusting the preload of the small spring 83 and the large spring 84; one end of the fixed shaft 81 is fixedly connected to the slide table 9, the adjustment mechanism is set between the other end of the fixed shaft 81 and the frame 1; the small spring 83, the large spring 84, and the two flanges 82 are sleeved on the fixed shaft 81, and the large spring 84 is sleeved on the small spring 83 outside, and the two ends of the small spring 83 and the large spring 84 are pressed on the two flanges 82 respectively; 1, the screw 85 is threadedly connected with the nut 86; the inner end of the screw 85 presses against the flange 82 located at the outer end of the fixed shaft 81, and the outer end of the screw 85 extends out of the frame 1. The pre-tightening mechanism 8 can not only adjust the pre-tightening force, but also play the role of overload protection. The structural improvement design of the sub-spring type has a higher safety factor than a single spring, saves materials and smaller space, and makes the roller The movement can be fully protected, solving the problems of insufficient rebound and short service life of ordinary single springs, greatly improving the resilience of the spring, ensuring the supporting force of the spring, and effectively extending the service life of the spring.

A positioning structure is provided between the slide table 9 and the frame 1, and the positioning structure includes a positioning plate 10 and a fastener. The slide table 9 and the frame 1 are all provided with some positioning holes, and the positioning plate 10 passes through the fastener respectively. Connect with slide table 9 and frame 1. The purpose of this arrangement is to locate the crushing mechanism in a suitable position after the slide table 9 slides.

The transmission device includes a belt transmission device 4, a secondary speed reducer 5 and a chain transmission device 6 connected in sequence, the engine 2 is connected to the belt transmission device 4, and the first roller assembly 3a and the second roller assembly 3b are respectively connected to a chain transmission Device 6 is connected. The belt drive 4 comprises a belt 41, a primary pulley 42 fixed to the output shaft of the engine 2, a secondary pulley 43 fixed to the input shaft of the secondary speed reducer 5, and the belt 41 is arranged on the primary pulley 42 and the secondary pulley. 43 on. The chain transmission device 6 includes a chain 61, a main sprocket 62 fixedly connected to the output shaft of the secondary reducer 5, and a secondary sprocket 63 fixedly connected to the above-mentioned drive shaft 34, and the chain 61 is arranged on the main chain wheel 62 and secondary sprocket 63.

The running gear 7 includes two rows of wheels arranged parallel to the bottom of the frame 1 or laterally, each row of wheels is at least made up of two rolling wheels 71, and crawler belts 72 are all provided on the two rows of wheels. According to the difference of the work site, the crawler belt 72 can be made of rubber, or the crawler belt 72 with a metal surface can be used. The crawler belt 72 is set on the two rolling wheels 71, which can be conveniently transported. The crawler belt 72 can walk without damaging the road surface and has a wide range of applications. A certain amount of processing can be carried out on muddy and soft surfaces. The requirements for the site are low, and there is no need to stretch out the legs. , can be processed, saving time, increasing the stability and scope of application of the machine.

The content described in the embodiments of this specification is only an enumeration of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments. The protection scope of the present invention also extends to the field Equivalent technical means that the skilled person can think of based on the concept of the present invention.

Claims (10)

1. pair roller type ore crusher, it is characterized in that, described ore crusher comprises frame, be arranged on roller pair breaking mechanism, engine, transmission device in frame, be arranged on frame side to or the walking mechanism of bottom, described roller pair breaking mechanism comprises that, to roll assembly one with to roll assembly two, described is installed in frame roll assembly one, described roll assembly two is slidably connected in frame, in frame, is provided with and makes roll assembly two have to the pre-tightening mechanism to roll assembly one direction movement tendency; Described to roll assembly one with roll assembly two is connected with an engine by a transmission device respectively.

2. pair roller type ore crusher as claimed in claim 1, is characterized in that, is provided with slide unit in frame, and described slide unit and frame are slidably connected, above-mentioned to roll assembly two and drive the engine of roll assembly two and transmission device are all connected on slide unit.

3. pair roller type ore crusher as claimed in claim 2, it is characterized in that, between described slide unit and frame, be provided with location structure, described location structure comprises location-plate, securing member, in described slide unit and frame, be equipped with some locating holes, described location-plate is connected with frame with slide unit respectively by securing member.

4. pair roller type ore crusher as claimed in claim 2 or claim 3, is characterized in that, described pre-tightening mechanism comprises fixed axis, two ring flanges, little spring, big spring, and the governor motion of adjusting little spring and big spring pretightning force; One end of described fixed axis is connected on slide unit, and described governor motion is arranged between the other end and frame of fixed axis; Described little spring, big spring, two ring flanges are set on fixed axis, and described big spring is set in outside little spring, and the two ends of described little spring and big spring are pushed up respectively and are pressed on two ring flanges; Described governor motion comprises and is set on above-mentioned fixed axis outer end and the screw rod of hollow, is connected in the nut in frame, and described screw rod is connected with nut thread; The top, the inner of described screw rod is pressed on the ring flange that is positioned at fixed axis outer end, and frame is stretched out in described screw rod outer end.

5. the pair roller type ore crusher as described in claim 1 or 2 or 3, it is characterized in that, described to roll assembly one or to roll assembly two comprise respectively driving shaft, be set in the roller on driving shaft and be arranged on driving shaft and roller between roller is connected to two positioning disks and the securing member on driving shaft.

6. pair roller type ore crusher as claimed in claim 5, it is characterized in that, in described roller, have two conical bores that increase gradually to roller two ends, the mid portion of described driving shaft has protruding step, the length in the axial direction of the step described in the spacing between described two conical bores equals; Described two positioning disks have the male cone (strobilus masculinus) coordinating with conical bore, and described two positioning disks be arranged on step both sides and respectively top be pressed on step, above-mentioned securing member connects described two positioning disks.

7. pair roller type ore crusher as claimed in claim 5, is characterized in that, the lateral surface of described roller comprises that some intervals arrange and form continuously the concave, convex cambered surface of plum blossom-shaped.

8. pair roller type ore crusher as claimed in claim 7, is characterized in that, in described concave, convex cambered surface, is equipped with roller tooth.

9. the pair roller type ore crusher as described in claim 1 or 2 or 3, it is characterized in that, described transmission device comprises belt driver, two stage reducer and the chain and sprocket driving device that connects successively setting, described engine is connected with belt driver, described to roll assembly one with roll assembly two is connected with a chain and sprocket driving device respectively.

10. the pair roller type ore crusher as described in claim 1 or 2 or 3, is characterized in that, described walking mechanism comprises the two skate groups that are at least comprised of two scroll wheels that are set in parallel in frame bottom or side direction, in described two skate groups, is equipped with crawler belt.

Images