Discharge outlet control device for jaw crusher

Abstract

The utility model provides a discharge port control device for a jaw crusher, which comprises a hydraulic adjusting unit, a position sensing unit, a PLC (programmable logic controller) and a display screen, and is characterized in that the hydraulic adjusting unit comprises a first hydraulic cylinder, a second hydraulic cylinder, a first wedge block, a second wedge block, a limiting structure and a toggle plate transmission structure; the first wedge block and the second wedge block are arranged in the limiting space in a limiting mode, and the inclined face of the first wedge block makes contact with the inclined face of the second wedge block. The first wedge block and the second wedge block are respectively driven by the first hydraulic cylinder and the second hydraulic cylinder to move in opposite directions or in opposite directions, so that the overlapping thickness of the first wedge block and the second wedge block is increased or decreased; one end of the toggle plate transmission structure is connected with the movable jaw body, and the other end of the toggle plate transmission structure is positioned in the limiting space and moves along with the change of the overlapping thickness of the wedge block; the displacement sensor is fixed on the rack; the positioning magnetic block is arranged in the limiting space and moves along with the change of the overlapping thickness of the wedge block; the displacement sensor is electrically connected with the PLC, and the PLC is electrically connected with the display screen.

Description

Technical Field

[0001] The utility model relates to the technical field of jaw crushers, in particular to a control discharge port device for a jaw crusher. Background Art

[0002] The jaw crusher consists of two jaw plates, a movable jaw and a static jaw, forming a crushing chamber. It simulates the movement of the jaws of an animal to complete material crushing operations. It is widely used to crush various ores and large materials in industries such as mining and smelting, building materials, roads, railways, water conservancy, and chemicals. The discharge particle size of a jaw crusher is one of the important indicators of its production quality, and the size of the discharge port determines the particle size of the crushed ore. Therefore, the size of the discharge port needs to be adjusted according to production needs. Currently, the discharge port of a jaw crusher is adjusted manually. A lead block of known size is placed above the crusher. The size of the lead block after passing through the jaw crusher discharge port is the discharge port size. The above process must be repeated for each adjustment, which takes a long time and involves many steps, which is inconvenient. Utility Model Content

[0003] In order to solve the above problems, the utility model aims to provide a control discharge port device for a jaw crusher.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The utility model provides a control discharge port device for a jaw crusher, comprising a frame, a movable jaw body and a front wall mounted on the frame, a movable jaw lining plate mounted on the movable jaw body, a fixed jaw lining plate mounted and fixed on the front wall, a gap formed by the bottom of the movable jaw lining plate and the fixed jaw lining plate is the crusher discharge port, and is characterized in that it also includes: a hydraulic adjustment unit, a position sensing unit, a PLC controller and a display screen, wherein the hydraulic adjustment unit includes a first hydraulic cylinder, a second hydraulic cylinder, a first wedge block, a second wedge block, a limiting structure, and a toggle plate transmission structure; the limiting structure is mounted and fixed on the frame to form a limited space; the first wedge block and the second wedge block are limitedly arranged in the limited space, and the second wedge block is opposite to the first wedge block It is arranged that the inclined surface of the first wedge block contacts the inclined surface of the second wedge block; the first wedge block and the second wedge block are driven by the first hydraulic cylinder and the second hydraulic cylinder to move toward each other or back to back, so that the overlapping thickness of the first wedge block and the second wedge block becomes larger or smaller; one end of the toggle plate transmission structure is connected to the movable jaw body, and the other end is located in the limit space, and moves with the change of the overlapping thickness of the first wedge block and the second wedge block; the position sensing unit includes a positioning magnet and a displacement sensor for sensing the positioning magnet, the displacement sensor is fixed on the frame, and the positioning magnet is arranged in the limit space and moves with the change of the overlapping thickness of the first wedge block and the second wedge block; the displacement sensor is electrically connected to the PLC controller, and the PLC controller is electrically connected to the display screen.

[0006] Furthermore, in the control discharge port device for a jaw crusher provided by the present invention, it can also have the following characteristics: wherein, the toggle plate transmission structure includes a toggle plate fixing seat, two toggle plate seats, and a toggle plate body; the toggle plate fixing seat is limitedly set in the limiting space, one toggle plate seat is installed and fixed on the toggle plate fixing seat, and the other toggle plate seat is installed and fixed on the movable jaw body; the two ends of the toggle plate body are respectively matched and connected with the two toggle plate seats.

[0007] Furthermore, in the control discharge port device for the jaw crusher provided by the utility model, it can also have the following characteristics: wherein, a pad and a positioning magnet mounting sleeve are also provided in the limiting space; the pad is arranged between the first wedge block and the elbow plate fixing seat; a slot is provided on the pad, one end of the positioning magnet mounting sleeve is engaged with the slot, and the positioning magnet is fixed to the other end of the positioning magnet mounting sleeve.

[0008] Furthermore, the control discharge port device for a jaw crusher provided by the present invention may also have the following features: wherein the displacement sensor is a magnetostrictive displacement sensor, the positioning magnetic block is a magnetic ring that cooperates with the magnetostrictive displacement sensor, the magnetic ring is sleeved on the guide rod of the magnetostrictive displacement sensor, and the guide rod extends into the positioning magnetic block mounting sleeve.

[0009] Furthermore, the control discharge port device for a jaw crusher provided by the present invention may also have the following features: wherein, the first wedge block and the second wedge block are both provided with long strip-shaped through holes, and the positioning magnetic block mounting sleeve passes through the through holes of the second wedge block and the first wedge block.

[0010] Furthermore, in the control discharge port device for the jaw crusher provided by the present invention, it can also have the following characteristics: wherein, the hydraulic adjustment unit also includes a hydraulic pump, a motor, an oil tank and a first solenoid valve, the motor is used to drive the hydraulic pump, one end of the hydraulic pump is connected to the oil tank, and the other end of the hydraulic pump is connected to the first hydraulic cylinder and the second hydraulic cylinder through the hydraulic cylinder oil supply pipeline, and the first solenoid valve is arranged on the hydraulic cylinder oil supply pipeline.

[0011] Furthermore, in the control discharge port device for a jaw crusher provided by the present invention, it can also have the following features: wherein, the hydraulic adjustment unit also includes a tie rod stabilization assembly, a second solenoid valve and a third solenoid valve; the tie rod stabilization assembly includes a tie rod body, a tie rod mounting seat, a locking cylinder and a spring; the tie rod body is rotatably connected to the movable jaw body; the tie rod mounting seat is fixed on the frame; the locking cylinder is connected to the tie rod body, and a second solenoid valve is provided on the locking cylinder oil supply pipeline; one end of the spring is connected to the tie rod mounting seat, and the other end is connected to the locking cylinder; the first end of the third solenoid valve has two connecting ends, which are respectively connected to the first solenoid valve and the second solenoid valve; the second end of the third solenoid valve has two connecting ends, which are respectively connected to the hydraulic pump and the oil tank.

[0012] Furthermore, the control discharge port device for a jaw crusher provided by the present invention may also have the following feature: the oil supply pipeline of the locking cylinder is further provided with a safety valve.

[0013] Furthermore, in the control discharge port device for the jaw crusher provided by the present invention, it can also have the following features: wherein, the frame is composed of side panels, a rear wall and a front wall; the limiting structure is installed on the rear wall; the pull rod mounting seat is fixed on the rear wall; the rear wall and the front wall are respectively fixed to the side panels by bolts.

[0014] Furthermore, the control discharge port device for a jaw crusher provided by the present invention may also have the following feature: the movable jaw is suspended on the side plate through an eccentric shaft.

[0015] Functions and effects of this utility model:

[0016] This utility model's discharge port control device for a jaw crusher adjusts the size of the crusher's discharge port by manipulating a hydraulic adjustment unit to move the movable jaw. This adjustment is achieved by a motor-driven hydraulic pump, which in turn drives a hydraulic cylinder, controlled by a solenoid valve in the pipeline. This makes the entire adjustment process automated, eliminating the cumbersome manual operations of the prior art, reducing workload and improving efficiency. Furthermore, a position sensing unit measures the distance S between the positioning magnet and the displacement sensor, thereby determining changes in the crusher's discharge port size. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the mechanical structure of a discharge port control device for a jaw crusher in an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the rear wall and related structures installed on the rear wall in an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the piping connection of the hydraulic adjustment unit in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the adjustment of the overlapping thickness of the first wedge block and the second wedge block in the embodiment of the present invention. In the figure, the transition from state (a) to state (b) indicates that the overlapping thickness becomes smaller, and the dotted rectangle in the figure indicates the installation position of the positioning magnetic block mounting sleeve and the displacement sensor.

[0021] Markings in the figure: 1. Front wall; 2. Fixed jaw lining; 3. Movable jaw lining; 4. Movable jaw body; 5. Toggle plate transmission structure; 5a. Toggle plate body; 5b. Toggle plate seat; 5c. Toggle plate fixing seat; 6. Tie rod stabilizing assembly; 6a. Locking cylinder; 6b. Tie rod body; 6c. Tie rod mounting seat; 6d. Spring; 7. Rear wall; 8. Eccentric shaft; 9. Side plate; 10. Limiting structure; 12. Pad; 13. First wedge block; 13a. Long strip-shaped through hole on the first wedge block; 14. Second wedge Block; 14a. Long through hole on the second wedge; 15. Positioning magnet mounting sleeve; 16. Positioning magnet; 17. Displacement sensor; 18. First hydraulic cylinder; 19. Second hydraulic cylinder; 20. First solenoid valve; 21. Second solenoid valve; 22. Safety valve; 23. Hydraulic pump; 24. Motor; 25. Fuel tank; 26. Third solenoid valve; V: Crusher discharge port; S: Distance between the positioning magnet and the displacement sensor; T: Represents the superimposed thickness of the first wedge and the second wedge. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following embodiments are combined with the accompanying drawings to specifically illustrate the technical solutions of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0024] In addition, in the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inside," "outside," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0025] <Example>

[0026] An embodiment of the utility model provides a control discharge port device for a jaw crusher, comprising a hydraulic adjustment unit, a position sensing unit, a PLC controller and a display screen.

[0027] See Figure 1 The frame of this device consists of side panels 9, a rear wall 7, and a front wall 1. The rear wall 7 and front wall 1 are bolted to the side panels 9. The fixed jaw liner 2 is mounted on the front wall 1. The movable jaw 4 is suspended from the side panels via an eccentric shaft 8. The eccentric shaft is driven by a motor to perform the crushing action of the movable jaw 4. The movable jaw liner 3 is mounted on the movable jaw. The gap formed between the movable jaw liner 3 and the bottom of the fixed jaw liner 2 is the crusher discharge port V.

[0028] See Figure 1 and Figure 3 The hydraulic adjustment unit includes a first hydraulic cylinder 18, a second hydraulic cylinder 19, a first wedge block 13, a second wedge block 14, a limiting structure 10, a toggle plate transmission structure 5, a hydraulic pump 23, a motor 24, a first solenoid valve 20, a pull rod stabilization assembly 6, a second solenoid valve 21 and a safety valve 22.

[0029] Rear wall 7 has a slot structure, and a limiting structure 10 is installed and fixed in the slot structure of rear wall 7. Limiting structure 10 is composed of two parts, forming a narrow limiting space between the two parts. The two parts of limiting structure 10 can be limiting columns or limiting plates, and are fixed to rear wall 7 by bolts.

[0030] The first wedge block 13 and the second wedge block 14 are positioned in the limiting space. Figure 3 and Figure 4 The second wedge block 14 is arranged opposite to the first wedge block 13, and the inclined surface of the first wedge block 13 contacts the inclined surface of the second wedge block 14. The first wedge block 13 and the second wedge block 14 are driven by the first hydraulic cylinder 18 and the second hydraulic cylinder 19 to move toward or away from each other. The overlapping thickness of the first wedge block 13 and the second wedge block 14 is as follows: Figure 3 When the first wedge block 13 and the second wedge block 14 move back to back, the overlapping thickness T of the first wedge block 13 and the second wedge block 14 will be as shown. Figure 4 As shown in FIG, T1 decreases to T2; when the first wedge block 13 and the second wedge block 14 move toward each other, the overlapping thickness T of the first wedge block 13 and the second wedge block 14 will increase.

[0031] See Figure 3 The hydraulic pump 23 is connected to the oil tank 25 via a pipeline. The motor 24 is electrically connected to the hydraulic pump 23 and is used to drive the hydraulic pump 23. The first hydraulic cylinder 18 and the second hydraulic cylinder 19 are connected to the hydraulic pump 23 via a hydraulic cylinder oil supply pipeline. The hydraulic cylinder oil supply pipeline is provided with a first solenoid valve 20. The first solenoid valve 20 is used to control the start and stop of the first hydraulic cylinder 18 and the second hydraulic cylinder 19.

[0032] The movable jaw 4, the toggle plate transmission structure 5 and the pull rod stabilizing assembly 6 together form a suspension mechanism.

[0033] See Figure 1 and Figure 2The toggle plate transmission structure 5 includes a toggle plate body 5a, two toggle plate seats 5b, and a toggle plate fixing seat 5c. The toggle plate fixing seat 5c is positioned within a limited space. One toggle plate seat 5b is mounted and fixed to the toggle plate fixing seat 5c, while the other toggle plate seat 5b is mounted and fixed to the movable jaw body 4. The ends of the toggle plate body 5a are respectively connected to the two toggle plate seats 5b. A backing plate 12 is also positioned within the limited space, positioned between the first wedge block 13 and the toggle plate fixing seat 5c.

[0034] When the overlapping thickness T between the first wedge 13 and the second wedge 14 changes, the toggle plate transmission structure 5 moves in response to the change in the overlapping thickness between the first wedge 13 and the second wedge 14, thereby driving the movable jaw 4 to swing. Specifically, when the overlapping thickness T between the first wedge 13 and the second wedge 14 increases, the toggle plate transmission structure 5 will be pushed to move closer to the movable jaw 4, so that the bottom of the movable jaw liner 3 is close to the fixed jaw liner 2, that is, the crusher discharge port V becomes smaller. When the overlapping thickness T between the first wedge 13 and the second wedge 14 decreases, the support of the toggle plate transmission structure 5 on the movable jaw 4 will become weaker, and the suspended movable jaw 4 will swing toward the side of the rear wall 7, so that the bottom of the movable jaw liner 3 is away from the fixed jaw liner 2, that is, the crusher discharge port V becomes larger.

[0035] The pull rod stabilizing assembly 6 provides tension through the pull rod to maintain the stable operation of the movable jaw 4 suspension mechanism. Figure 1 As shown, the tie rod stabilization assembly 6 includes a locking cylinder 6a, a tie rod body 6b, a tie rod mounting base 6c, and a spring 6d. The tie rod mounting base 6c is fixed to the rear wall 7. A pull ring is provided at the end of the tie rod body 6b, which is rotatably connected to the fixed column on the movable jaw body 4. The locking cylinder 6a is connected to the tie rod body 6b and is used to drive the tie rod body 6b to extend and retract. Figure 3 The locking cylinder 6a is connected to the oil tank 25 and the hydraulic pump 23 via pipelines. A second solenoid valve 21 is installed on the oil supply line of the locking cylinder 6a, which controls the start and stop of the locking cylinder 6a. One end of the spring 6d is connected to the tie rod mounting base 6c, and the other end of the spring 6d is connected to the locking cylinder 6a. Preferably, a safety valve 22 is installed on the connecting line of the locking cylinder 6a. The locking cylinder 6a and the safety valve 22 are connected in series, and the safety valve 22 is used to relieve pressure and ensure safety.

[0036] In the hydraulic adjustment unit, see Figure 3 The first end of the third solenoid valve 26 has two connecting terminals, one connected to the first solenoid valve 20 and the other to the second solenoid valve 21. The second end of the third solenoid valve 26 has two connecting terminals, one connected to the hydraulic pump 23 and the other to the oil tank 25. The hydraulic cylinder and the locking cylinder switch oil circuits through the third solenoid valve 26, and the oil circuits do not interfere with each other.

[0037] See Figure 1 and Figure 2The position sensing unit includes a positioning magnet 16 and a displacement sensor 17 for sensing the positioning magnet 16. A slot is provided on the backing plate 12, and one end of the positioning magnet mounting sleeve 15 is engaged with the slot, and the positioning magnet 16 is fixed to the other end of the positioning magnet mounting sleeve 15. The first wedge 13 and the second wedge 14 are both provided with a long strip through hole (see Figure 4 13a and 14a), the positioning magnetic block mounting sleeve 15 passes through the second wedge block 14 and the through hole of the first wedge block 13. Figure 1 and Figure 2 The positioning magnetic block mounting sleeve 15 and the pad 12 are both arranged in the limiting space.

[0038] See Figure 1 and Figure 2 The displacement sensor 17 is fixed to the rear wall 7. In this embodiment, the displacement sensor 17 utilizes a conventional magnetostrictive displacement sensor. The positioning magnet 16 is a magnetic ring that cooperates with the magnetostrictive displacement sensor. The magnetic ring is mounted on the guide rod of the magnetostrictive displacement sensor, which extends into the positioning magnet mounting sleeve 15. The displacement sensor 17 measures the distance S between the positioning magnet 16 and the displacement sensor 17 by sensing the magnetic ring. When the overlap thickness T between the first wedge 13 and the second wedge 14 increases, the crusher discharge opening V decreases and the distance S increases. When the overlap thickness T between the first wedge 13 and the second wedge 14 decreases, the crusher discharge opening V increases and the distance S decreases. This distance S corresponds to the crusher discharge opening V. This correspondence can be measured during the production and commissioning of the jaw crusher and is considered known. Therefore, the size of the crusher discharge opening V can be determined by measuring the distance S. The displacement sensor 17 is electrically connected to a PLC controller (not shown), and data from the displacement sensor 17 is transmitted to the PLC controller. The PLC controller adopts the existing technology with an RS-232 interface or an RS-485 interface. The PLC controller is electrically connected to a display screen (not shown) through the interface and a data line. The display screen is used to display data.

[0039] The first solenoid valve 20 , the first solenoid valve 21 , the third solenoid valve 26 , and the motor 24 are also electrically connected to a PLC controller, which is an industrial control PLC with an integrated switch.

[0040] The embodiment of the present utility model provides an adjustment method for a control discharge port device for a jaw crusher as follows: when the crusher discharge port V needs to be increased, the first hydraulic cylinder 18 and the second hydraulic cylinder 19 drive the first wedge 13 and the second wedge 14 to move in opposite directions, so that the overlapping thickness T becomes smaller, the distance S is correspondingly reduced, and the discharge port V increases. The staff can see the displayed data on the display screen and know the increase of the crusher discharge port V from the decrease in distance S. When the crusher discharge port V needs to be decreased, the first hydraulic cylinder 18 and the second hydraulic cylinder 19 drive the first wedge 13 and the second wedge 14 to move in opposite directions, so that the overlapping thickness T becomes larger, the distance S is correspondingly increased, and the discharge port V is reduced. Adjusting the size of the discharge port V can meet the production needs of materials with different particle sizes.

[0041] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A control discharge port device for a jaw crusher, comprising a frame, a movable jaw body mounted on the frame, and a front wall, wherein a movable jaw liner is mounted on the movable jaw body, and a fixed jaw liner is fixedly mounted on the front wall, wherein the gap formed by the bottom of the movable jaw liner and the fixed jaw liner is the crusher discharge port, characterized in that: Also includes: Hydraulic adjustment unit, position sensing unit, PLC controller and display screen, Wherein, the hydraulic adjustment unit includes a first hydraulic cylinder, a second hydraulic cylinder, a first wedge block, a second wedge block, a limiting structure, and a toggle plate transmission structure; The limiting structure is installed and fixed on the frame to form a limited space; The first wedge block and the second wedge block are limitedly disposed in the limited space, the second wedge block is disposed opposite to the first wedge block, and the inclined surface of the first wedge block contacts the inclined surface of the second wedge block; The first wedge block and the second wedge block are driven by the first hydraulic cylinder and the second hydraulic cylinder to move toward or away from each other, respectively, so that the overlapping thickness of the first wedge block and the second wedge block increases or decreases; One end of the toggle plate transmission structure is connected to the movable jaw body, and the other end is located in the limiting space and moves with the change of the overlapping thickness of the first wedge block and the second wedge block; The position sensing unit includes a positioning magnetic block and a displacement sensor for sensing the positioning magnetic block, the displacement sensor is fixed to the frame, and the positioning magnetic block is arranged in the limiting space and moves as the overlapping thickness of the first wedge block and the second wedge block changes; The displacement sensor is electrically connected to the PLC controller, and the PLC controller is electrically connected to the display screen.

2. The control discharge port device for a jaw crusher according to claim 1, characterized in that: in, The toggle plate transmission structure includes a toggle plate fixing seat, two toggle plate seats, and a toggle plate body; The toggle plate fixing seat is limitedly arranged in the limiting space, one toggle plate seat is mounted and fixed on the toggle plate fixing seat, and the other toggle plate seat is mounted and fixed on the movable jaw body; The two ends of the toggle plate body are respectively matched and connected with the two toggle plate seats.

3. The control discharge port device for a jaw crusher according to claim 2, characterized in that: in, A backing plate and a positioning magnetic block mounting sleeve are also provided in the limiting space; The pad is arranged between the first wedge and the toggle plate fixing seat; A card slot is provided on the backing plate, one end of the positioning magnet mounting sleeve is engaged with the card slot, and the positioning magnet is fixed to the other end of the positioning magnet mounting sleeve.

4. The control discharge port device for a jaw crusher according to claim 3, characterized in that: in, The displacement sensor is a magnetostrictive displacement sensor, and the positioning magnetic block is a magnetic ring that matches the magnetostrictive displacement sensor. The magnetic ring is sleeved on the guide rod of the magnetostrictive displacement sensor, and the guide rod extends into the positioning magnetic block mounting sleeve.

5. The control discharge port device for a jaw crusher according to claim 3, characterized in that: in, The first wedge block and the second wedge block are both provided with a long strip-shaped through hole, and the positioning magnetic block mounting sleeve passes through the through holes of the second wedge block and the first wedge block.

6. The control discharge port device for a jaw crusher according to claim 1, characterized in that: in, The hydraulic adjustment unit also includes a hydraulic pump, a motor, an oil tank and a first solenoid valve. The motor is used to drive the hydraulic pump. One end of the hydraulic pump is connected to the oil tank. The other end of the hydraulic pump is connected to the first hydraulic cylinder and the second hydraulic cylinder through a hydraulic cylinder oil supply pipeline. The first solenoid valve is arranged on the hydraulic cylinder oil supply pipeline.

7. The control discharge port device for a jaw crusher according to claim 6, characterized in that: in, The hydraulic adjustment unit further includes a tie rod stabilizing assembly, a second solenoid valve and a third solenoid valve; The tie rod stabilizing assembly includes a tie rod body, a tie rod mounting seat, a locking cylinder and a spring; The pull rod body is rotatably connected to the movable jaw body; The pull rod mounting seat is fixed on the frame; The locking cylinder is connected to the pull rod body, and a second solenoid valve is provided on the oil supply pipeline of the locking cylinder; One end of the spring is connected to the pull rod mounting seat, and the other end is connected to the locking cylinder; The first end of the third solenoid valve has two connection ends, which are respectively connected to the first solenoid valve and the second solenoid valve; The second end of the third solenoid valve has two connection ends, which are respectively connected to the hydraulic pump and the oil tank.

8. The control discharge port device for a jaw crusher according to claim 7, characterized in that: in, The oil supply pipeline of the locking cylinder is also provided with a safety valve.

9. The control discharge port device for a jaw crusher according to claim 7, characterized in that: in, The frame consists of side panels, a rear wall and the front wall; The limiting structure is installed on the rear wall; The pull rod mounting base is fixed to the rear wall; The rear wall and the front wall are respectively fixed to the side panels by bolt connection.

10. The control discharge port device for a jaw crusher according to claim 9, characterized in that: in, The movable jaw is suspended on the side plate through an eccentric shaft.

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