A double-chamber jaw crusher

Abstract

The invention discloses a double-chamber jaw crusher, which relates to the technical field of crushing equipment, including a frame, a movable jaw plate and a jaw plate are installed in the frame, a rocker mechanism is connected to one side of the bottom end of the movable jaw plate, the rocker mechanism includes a first fixed shaft installed on the frame, a second fixed shaft is installed on the movable jaw plate, and a first connecting rod is hinged between the first fixed shaft and the second fixed shaft; a crank transmission mechanism is connected to the top of the movable jaw plate, a guide wheel frame is installed on the top of the frame, a guide wheel groove is provided on the guide wheel frame, a guide wheel is installed in the guide wheel groove, a third fixed shaft is fixed to the top of the movable jaw plate, the third fixed shaft is coaxially connected to the guide wheel, and the crank transmission mechanism includes a first motor, an eccentric wheel is connected to the driving shaft of the first motor, and a second connecting rod is hinged between the eccentric wheel and the third fixed shaft. The invention solves the technical problem of high energy consumption in the process of power input of the jaw crusher in the prior art, and the invention effectively reduces the energy consumption of the transmission and the wear of parts.

Description

Technical Field

[0001] The invention relates to the technical field of crushing equipment, in particular to a double-cavity jaw crusher. Background Art

[0002] In mineral processing production, the crushing project has a huge impact on the quality of minerals, so the crusher has become an indispensable production factor as the main mechanical equipment. Jaw crushers are widely used in mineral processing crushing projects due to their simple structure and easy maintenance. The common jaw crusher is a compound swing jaw crusher. The compound swing jaw crusher is simplified to a four-bar mechanism. The eccentric shaft is a crank. The crank rotates one circle and crushes only once. When the crank rotates to a certain range, the equipment is in a discharging state, and the crusher does not crush. At this time, it is in a non-working state, but still consumes energy. In order to overcome the energy consumption caused by the idle stroke, a double-chamber jaw crusher appeared. This type of crusher has two crushing chambers. When one crushing chamber is crushing, the other crushing chamber is discharging, and vice versa. This doubles the processing capacity of the crusher and greatly improves the energy utilization rate.

[0003] The Chinese patent application number 201511027982.4 discloses a double-chamber double-moving jaw crusher, which uses a connecting rod to install the movable jaw at the top and an eccentric main shaft to install the movable jaw at the bottom (i.e., the movable jaw faces downward). During operation, the movable jaw moves in a planar manner, and the eccentric main shaft as a power source is placed at the bottom. This technology has the following problems:

[0004] 1. The power source adopts an eccentric main shaft structure, and the eccentric main shaft and the movable jaw adopt an eccentric sliding connection method, in which sliding friction consumes serious energy.

[0005] 2. The eccentric spindle and its related components are complicated to disassemble and assemble, parts are not easy to replace, and maintenance and inspection are inconvenient.

[0006] 3. The power input of the eccentric spindle depends on the flywheel structure, which requires a large power from the motor. Summary of the invention

[0007] In view of the above defects, the purpose of the present invention is to provide a double-chamber jaw crusher, aiming to solve the technical problem of high energy consumption in the process of power input of the jaw crusher in the prior art.

[0008] In order to solve the above technical problems, the technical solution of the present invention is:

[0009] A double-chamber jaw crusher comprises a frame, a movable jaw plate and fixed jaw plates symmetrically arranged on both sides of the movable jaw plate are installed in the frame, a crushing chamber is formed between the fixed jaw plate and the movable jaw plate, and the two fixed jaw plates are gradually opened from bottom to top.

[0010] The bottom end of the movable jaw plate is connected with a rocker mechanism, which includes a first fixed shaft installed on the frame, a second fixed shaft parallel to the first fixed shaft is installed on the movable jaw plate, and a first connecting rod is hinged between the first fixed shaft and the second fixed shaft;

[0011] The top of the movable jaw plate is connected to a crank transmission mechanism that drives the movable jaw plate to swing back and forth. A guide wheel groove is provided on the top of the frame. A guide wheel that rolls between the two fixed jaw plates is installed in the guide wheel groove. A third fixed shaft parallel to the first fixed shaft is fixedly connected to the top of the movable jaw plate. The guide wheel is coaxially connected to the third fixed shaft for rotation. The crank transmission mechanism includes a first motor. An eccentric wheel is fixedly connected to the driving shaft of the first motor. A second connecting rod is hinged between the eccentric wheel and the third fixed shaft.

[0012] Wherein, a first tooth plate is detachably mounted on the movable jaw plate, and a second tooth plate is detachably mounted on the fixed jaw plate.

[0013] Wherein, two ends of the third fixed shaft are respectively connected with a crank transmission mechanism.

[0014] Wherein, guide wheel grooves are provided on both sides of the frame, guide wheels are connected in the guide wheel grooves, and the two guide wheels are rotatably connected to the two ends of the third fixed shaft respectively.

[0015] Among them, a mounting groove is provided at the bottom end of the movable jaw plate, in which a roller body parallel to the first fixed axis is rotatably installed, and a plurality of material-pickling protrusions are evenly arranged on the surface of the roller body. The material-pickling protrusions can enter the crushing chamber as the roller body rotates, and a second motor that drives the roller body to rotate is installed on the movable jaw plate.

[0016] Among them, the material-shifting protrusion is a truncated cone structure.

[0017] Among them, mounting plates are fixedly connected on both sides of the bottom of the movable jaw plate, and a slide groove is provided on the mounting plate. A slider sliding between the two fixed jaw plates is installed in the slide groove. Connecting shafts are coaxially fixedly connected to the two ends of the roller body. The two connecting shafts are respectively rotatably connected to the two sliders. The second motor is installed on the slider and is coaxially connected to the connecting shaft.

[0018] There are two first compression springs installed in the slide groove, and the two first compression springs are elastically supported on two end surfaces of the sliding block facing the fixed jaw plate.

[0019] Among them, the first tooth plate includes a plate body, on which are provided a plurality of vertically extending strip-shaped protrusions, which are arranged at intervals along the width direction of the movable jaw plate, and a groove is provided at the bottom of the movable jaw plate for the material-picking protrusion to freely enter and exit, and the groove is located between adjacent two strip-shaped protrusions.

[0020] Among them, the top end of the fixed jaw plate is hinged to the frame, a toggle plate is supported between the back side of the fixed jaw plate and the inner wall of the frame facing it, an adjusting rod is hinged to the back side of the fixed jaw plate, the other end of the adjusting rod slides through the frame, an adjusting nut located outside the frame is screwed on the adjusting rod, and a second compression spring is provided between the adjusting nut and the frame.

[0021] After adopting the above technical solution, the beneficial effects of the present invention are:

[0022] 1. The movable jaw is driven by a crank to roll the guide wheel in the guide wheel groove. The rolling friction of the guide wheel on the guide wheel groove consumes less energy than the sliding friction, which effectively reduces the transmission energy consumption; the guide wheel is not easy to wear, and the service life of the parts is extended; the reciprocating motion of the movable jaw plate is more stable, and the crushing effect of the ore is better.

[0023] 2. After the movable jaw plate deviates from the equilibrium position (i.e. the position when the movable jaw plate is in a vertical state), it will move up and down, thereby generating positive pressure and shear force on the ore blocks, diversifying the force on the ore blocks, improving the crushing efficiency of the ore, and the three-dimensionality of the crushed ore blocks.

[0024] 3. The crank transmission mechanism drives the movable jaw plate on both sides of the frame at the same time, which effectively overcomes the eccentric load, improves the power, and then improves the working efficiency.

[0025] 4. The external rocker mechanism and crank transmission mechanism make the disassembly and assembly of components more convenient.

[0026] 5. The roller body and the material-shifting protrusion design are adopted to realize the functions of upward turning and downward shifting of materials, further improving the crushing effect.

[0027] In summary, the present invention solves the technical problem of high energy consumption in the process of power input of the jaw crusher in the prior art. The present invention effectively reduces the energy consumption of the transmission and the wear of the components, extends the service life of the components, enhances the stability of the equipment performance, and improves the work efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional cutaway schematic diagram of a first embodiment of a double-chamber jaw crusher of the present invention;

[0029] Figure 2 yes Figure 1 A schematic diagram of the structure of the crank transmission mechanism;

[0030] Figure 3 FIG. 1 is a perspective schematic diagram of a second embodiment of a double-chamber jaw crusher of the present invention;

[0031] Figure 4It is a planar cross-sectional schematic diagram of a third embodiment of a double-chamber jaw crusher of the present invention;

[0032] Figure 5 yes Figure 4 Enlarged view of part A in the middle;

[0033] Figure 6 yes Figure 4 Side view of the moving jaw;

[0034] In the figure, 1-frame, 10-guide wheel frame, 100-guide wheel groove, 2-movable jaw plate, 20-third fixed shaft, 21-guide wheel, 22-first tooth plate, 220-plate body, 221-strip protrusion, 222-notch, 23-mounting groove, 24-roller body, 240-material-diverting protrusion, 241-connecting shaft, 25-second motor, 26-mounting plate, 260-slide groove, 27-slider, 28-first compression spring Spring, 3-fixed jaw plate, 30-second tooth plate, 31-elbow plate, 310-elbow plate groove, 311-wedge block, 32-adjusting rod, 320-adjusting nut, 321-second compression spring, 4-crushing chamber, 5-rocker mechanism, 50-first fixed shaft, 51-second fixed shaft, 52-first connecting rod, 6-crank transmission mechanism, 60-first motor, 61-eccentric wheel, 62-bearing, 63-second connecting rod. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] The positions mentioned in this specification are based on the positions of the double-chamber jaw crusher of the present invention when it is working normally, and do not limit the positions during storage and transportation. They only represent relative position relationships, not absolute position relationships.

[0037] Embodiment 1:

[0038] like Figure 1 and Figure 2 As shown together, the double-chamber jaw crusher includes a frame 1, in which a movable jaw plate 2 and two fixed jaw plates 3 are installed. The two fixed jaw plates 3 are symmetrically arranged on both sides of the movable jaw plate 2, and a crushing chamber 4 is formed between the fixed jaw plates 3 and the movable jaw plate 2. The top opening of the crushing chamber 4 is a feed port, and the bottom opening of the crushing chamber 4 is a discharge port. The two fixed jaw plates 3 are gradually opened from bottom to top. The ore enters the crushing chamber 4 from the feed port, and is crushed by the movable jaw plate 2 reciprocatingly and periodically squeezing toward the two fixed jaw plates 3. The crushed ore can be discharged through the discharge port after reaching a certain degree of fragmentation, thereby achieving a crushing effect.

[0039] The bottom end of the movable jaw plate 2 is connected with a rocker mechanism 5, which includes a first fixed shaft 50 installed on the frame 1, a second fixed shaft 51 parallel to the first fixed shaft 50 is installed on the movable jaw plate 2, a first connecting rod 52 is hinged between the first fixed shaft 50 and the second fixed shaft 51, and the lower part of the movable jaw plate 2 is constrained by the first fixed shaft 50 located on the frame 1, and performs a fixed-axis swinging motion around the first fixed shaft 50;

[0040] The top of the movable jaw plate 2 is connected with a crank transmission mechanism 6, and the crank transmission mechanism 6 and the rocker mechanism 5 are respectively connected to the two opposite sides of the movable jaw plate 2, so that the disassembly and assembly of the crank transmission mechanism 6 and the rocker mechanism 5 are more convenient, and the fault maintenance is simplified. A guide wheel frame 10 is installed on the top of the frame 1, and a guide wheel groove 100 is provided on the guide wheel frame 10. A guide wheel 21 rolling between the two fixed jaw plates 3 is installed in the guide wheel groove 100. The top of the movable jaw plate 2 is fixedly connected to a third fixed shaft 20 parallel to the first fixed shaft 50, and the guide wheel 21 is rotatably sleeved on the third fixed shaft 20. The crank transmission mechanism 6 includes a first motor 60, and an eccentric wheel 61 is fixedly connected to the driving shaft of the first motor 60. A second connecting rod 63 is hinged between the eccentric wheel 61 and the third fixed shaft 20, and a bearing 62 is installed between the eccentric wheel 61 and the second connecting rod 63. The output shaft of the first motor 60 rotates to drive the eccentric wheel 61 to rotate, and the eccentric wheel 61 drives one end of the second connecting rod 63 to rotate. The other end of the second connecting rod 63 is constrained by the guide wheel groove 100 to make horizontal reciprocating motion. At the same time, it drives the guide wheel 21 to roll back and forth in the guide wheel groove 100, thereby driving the upper part of the movable jaw plate 2 to make horizontal reciprocating motion. Under the combined action of the fixed axis swing and the horizontal reciprocating motion, the movable jaw plate 2 produces complex motion, achieving efficient squeezing, shearing and bending of the ore. Among them, the first motor 60 is preferably a hydraulic motor, and others such as electric motors are also applicable.

[0041] When in use, the movable jaw plate 2 and the two fixed jaw plates 3 form two crushing chambers 4, namely the left chamber and the right chamber. When the guide wheel 21 rolls to the left, the left chamber is fed, and the ore in the left chamber is squeezed, sheared and bent. At this time, the ore in the right chamber moves downward under the action of gravity and occupies a new position. When the size of the ore block is smaller than the size of the narrowest part of the crushing chamber 4, it leaves the crushing chamber 4. When the right chamber is discharged, the left chamber is fed and crushed. When the left chamber is discharged, the right chamber is fed and crushed, and then the cycle is repeated. In the process of the ore being crushed in the left chamber, the mineral in the crushing chamber 4 is gradually increased by the pressure of the movable jaw plate 2. After it increases to a certain extent, the mineral is crushed. At this time, the upper end of the movable jaw plate 2 moves horizontally to the left, and the lower end moves upward under the constraint of the rocker mechanism 5. The force of the lower end of the movable jaw plate 2 on the mineral is reduced, which effectively prevents the over-crushing of the mineral due to excessive pressure.

[0042] Furthermore, a first tooth plate 22 is detachably mounted on the movable jaw plate 2, and a second tooth plate 30 is detachably mounted on the fixed jaw plate 3. Both the first tooth plate 22 and the second tooth plate 30 increase the crushing effect of the ore, and the first tooth plate 22 and the second tooth plate 30 are easy to replace after long-term wear.

[0043] Preferably, the top of the fixed jaw plate 3 is hinged to the frame 1, a toggle plate 31 is supported between the back of the fixed jaw plate 3 and the inner wall of the frame 1 facing it, an adjusting rod 32 is hinged to the back of the fixed jaw plate 3, the other end of the adjusting rod 32 slides through the frame 1, an adjusting nut 320 located outside the frame 1 is screwed to the adjusting rod 32, and a second compression spring 321 is provided between the adjusting nut 320 and the frame 1. The distance between the fixed jaw plate 3 and the machine body 1 is adjusted by using the toggle plate 31 between the fixed jaw plate 3 and the frame 1, thereby adjusting the distance between the movable jaw plate 2 and the fixed jaw plate 3, so that the ore that cannot be crushed can be discharged smoothly from the discharge port. In this embodiment, a toggle plate groove 310 is provided on the fixed jaw plate 3, and a position-adjustable wedge block 311 is installed on the frame 31, one end of the toggle plate 31 is rotatably installed in the toggle plate groove 310, and the other end of the toggle plate 31 is blocked against the wedge block 311.

[0044] Embodiment 2:

[0045] The difference between this embodiment and the first embodiment is that: Figure 3 As shown, both ends of the third fixed shaft 20 are respectively connected with crank transmission mechanisms 6. The two crank transmission mechanisms 6 are synchronously driven to improve the stability of the reciprocating motion of the movable jaw plate 2, so that the overall structure of the equipment is more stable and the crushing effect is better.

[0046] Furthermore, guide wheel grooves 100 are provided on the front and rear sides of the top of the frame 1, and guide wheels 21 are connected in the guide wheel grooves 100. The two guide wheels 21 are rotatably connected to the two ends of the third fixed shaft 20 respectively. The two guide wheels 21 synchronously roll back and forth in the guide wheel grooves 100, thereby further improving the stability of the reciprocating motion of the movable jaw plate 2 and effectively reducing the failure rate of the equipment.

[0047] Embodiment three:

[0048] The difference between this embodiment and the first embodiment is that: Figure 4 , Figure 5 as well as Figure 6As shown together, a mounting groove 23 is provided at the bottom end of the movable jaw plate 2, and a roller body 24 parallel to the first fixed axis 50 is rotatably mounted in the mounting groove 23, and a plurality of material-discharging protrusions 240 are evenly arranged on the surface of the roller body 24. The material-discharging protrusions 240 can enter the crushing chamber 4 as the roller body 24 rotates, that is, the material-discharging protrusions 240 can enter the position of the discharge port in the crushing chamber 4, and a second motor 25 for driving the roller body 24 to rotate is installed on the movable jaw plate 2. The second motor 25 is preferably an anti-vibration hydraulic motor. When the left cavity crushes materials, the second motor 25 drives the roller body 24 to rotate clockwise, and qualified mineral blocks can pass through the gaps between the plurality of material-discharging protrusions 240 to achieve discharge, while unqualified mineral blocks (such as long strips and plate-shaped blocks) will be blocked by the material-discharging protrusions 240, so that the material-discharging protrusions can push the ore blocks upward, so that this part of the ore blocks can be repeatedly crushed, thereby further improving the crushing effect. At this time, the right cavity is in the discharging state, and the discharging protrusion 240 pushes the ore blocks at the discharge port of the right cavity downward, thereby improving the discharging efficiency. Similarly, when the left cavity is discharging and the right cavity is crushing, the second motor 25 drives the roller body 24 to rotate counterclockwise. Thereby, the crushing effect of the ore blocks is improved and the discharging efficiency is improved.

[0049] Preferably, the material-moving protrusion 240 is a truncated cone structure. The arc surface of the truncated cone structure is not easy to accumulate debris, thereby preventing the debris from accumulating in the installation groove 23.

[0050] Furthermore, mounting plates 26 are fixedly connected to both sides of the bottom of the movable jaw plate 2, and the area between the bottom of the movable jaw plate 2 and the two mounting plates 26 constitutes a mounting groove 23. A slide groove 260 is provided on the mounting plate 26, and a slider 27 sliding between the two fixed jaw plates 3 is installed in the slide groove 260. The two ends of the roller body 24 are coaxially fixed with a connecting shaft 241, and the two ends of the two connecting shafts 241 are respectively installed on the two sliders 27 through bearings. The second motor 25 is installed on the slider 27, and the driving shaft of the second motor 25 is connected to one end of the connecting shaft 241 through a coupling. When the material-pickup protrusion 240 is in direct hard contact with the ore block, the slider 27 can slide in the opposite direction in the slide groove 260 to separate the material-pickup protrusion 240 from the ore block, so as to avoid the material-pickup protrusion 240 from being stuck with the ore block.

[0051] Furthermore, two first compression springs 28 are installed in the slide groove 260, and the two first compression springs 28 are elastically supported on the two end surfaces of the slider 27 facing the fixed jaw plate 3. The two first compression springs 28 form elastic support for the two opposite ends of the slider 27, thereby forming a buffer for the reciprocating sliding of the slider 27, avoiding hard collision between the slider 27 and the inner wall of the slide groove 260, and improving the stability of the equipment.

[0052] Preferably, the first tooth plate 22 includes a plate body 220, on which a plurality of vertically extending strip-shaped protrusions 221 are provided, and the plurality of strip-shaped protrusions 221 are arranged at intervals along the width direction of the movable jaw plate 2, and a notch 222 for the material-prying protrusion 240 to freely enter and exit is provided at the bottom of the movable jaw plate 2, and the notch 222 is located between two adjacent strip-shaped protrusions 221. When the material-prying protrusion 240 is pulled out of the notch 222, the ore blocks embedded between the strip-shaped protrusions 221 can be effectively pulled out and separated, thereby further improving the crushing effect.

[0053] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work are all within the protection scope of the present invention.

Claims

1. A double-chamber jaw crusher, characterized in that: The invention comprises a frame, a movable jaw plate and fixed jaw plates symmetrically arranged on both sides of the movable jaw plate are installed in the frame, a crushing chamber is formed between the fixed jaw plate and the movable jaw plate, and the two fixed jaw plates are arranged in a gradually opening shape from bottom to top, and the invention is characterized in that a rocker mechanism is connected to the bottom end of the movable jaw plate, the rocker mechanism comprises a first fixed shaft installed on the frame, a second fixed shaft parallel to the first fixed shaft is installed on the movable jaw plate, a first connecting rod is hinged between the first fixed shaft and the second fixed shaft, and a top end of the movable jaw plate is connected to A crank transmission mechanism for driving the movable jaw plate to swing back and forth, a guide wheel groove is provided on the top of the frame, a guide wheel rolling between the two fixed jaw plates is installed in the guide wheel groove, a third fixed shaft parallel to the first fixed shaft is fixedly connected to the top of the movable jaw plate, the guide wheel is coaxially connected to the third fixed shaft for rotation, the crank transmission mechanism comprises a first motor, an eccentric wheel is connected to the driving shaft of the first motor, a second connecting rod is hinged between the eccentric wheel and the third fixed shaft, and both ends of the third fixed shaft are respectively connected to the crank transmission mechanism; The movable jaw plate is detachably mounted with a first tooth plate, and the fixed jaw plate is detachably mounted with a second tooth plate; the first tooth plate comprises a plate body, the plate body is provided with a plurality of vertically extending strip protrusions, and the plurality of strip protrusions are arranged at intervals along the width direction of the movable jaw plate; a groove is provided at the bottom of the movable jaw plate for the free entry and exit of the material-pickup protrusion, and the groove is located between two adjacent strip protrusions; guide wheel grooves are provided on both sides of the frame, the guide wheels are connected in the guide wheel grooves, and the two guide wheels are rotatably connected to the two ends of the third fixed shaft respectively; an installation groove is provided at the bottom end of the movable jaw plate, and a roller body parallel to the first fixed shaft is rotatably installed in the installation groove, and the surface of the roller body A plurality of material-discharging protrusions are evenly arranged on the surface, and the material-discharging protrusions are of a frustum structure. The material-discharging protrusions can enter the crushing chamber as the roller body rotates. A second motor that drives the roller body to rotate is installed on the movable jaw plate; mounting plates are respectively fixedly connected to the two sides of the bottom of the movable jaw plate, and a slide groove is provided on the mounting plate, and a slider that slides between the two fixed jaw plates is installed in the slide groove, and a connecting shaft is coaxially fixedly connected to the two ends of the roller body, and the two connecting shafts are respectively rotatably connected to the two sliders, the second motor is installed on the slider and is coaxially connected to the connecting shaft, and two first compression springs are installed in the slide groove, and the two first compression springs are respectively elastically supported on the two end surfaces of the slider facing the fixed jaw plate.

2. The double-chamber jaw crusher according to claim 1, characterized in that: The top end of the fixed jaw plate is hinged to the frame, a toggle plate is supported between the back side of the fixed jaw plate and the inner wall of the frame facing it, an adjusting rod is hinged to the back side of the fixed jaw plate, the other end of the adjusting rod slides through the frame, an adjusting nut located outside the frame is screwed on the adjusting rod, and a second compression spring is provided between the adjusting nut and the frame.

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