Discharge port adjusting device and jaw crusher

Abstract

The utility model relates to the technical field of crushers, in particular to a discharge port adjusting device and a jaw crusher. The discharge port adjusting device comprises a toggle plate, an oil cylinder assembly and two wedge blocks, wherein the side part of the first side of the toggle plate is connected with a movable jaw plate of the jaw crusher; the oil cylinder assembly is arranged on a rack of the jaw crusher; the two wedge blocks are arranged in the machine frame and connected with the oil cylinder assembly, and the inclined faces of the two wedge blocks make contact with each other. The side part of the second side of the toggle plate is connected with one of the two wedge blocks; the two wedge blocks can be driven by the oil cylinder assembly to move oppositely or oppositely so as to change the overlapping thickness of the two wedge blocks, and then the toggle plate adjusts the position of the movable jaw plate under the change of the overlapping thickness. According to the utility model, the size of the discharge port can be adjusted only by controlling the moving direction of the wedge block through the oil cylinder assembly, so that the discharge port can be quickly adjusted.

Description

Technical Field

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

[0002] At present, the adjustment of the discharge port of a jaw crusher is generally achieved by adjusting the gap between the moving jaw and the fixed jaw. Although small jaw crushers can directly adjust the position of the moving jaw through a hydraulic device, for large jaw crushers, due to the large pressure borne by the moving jaw part, an elbow plate is often required to adjust the moving jaw of the large jaw crusher, which results in a large amount of manpower and time being required to complete the adjustment of the position of the moving jaw of the large jaw crusher.

[0003] Therefore, a device capable of quickly adjusting the size of the discharge port of a large jaw crusher is urgently needed to be studied. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] To this end, the utility model provides a discharge port adjusting device capable of quickly adjusting the size of the discharge port of a large jaw crusher.

[0006] The utility model also provides a jaw crusher including the above discharge port adjusting device.

[0007] A discharge port adjusting device according to an embodiment of the first aspect of the utility model, applied to a jaw crusher, includes:

[0008] An elbow plate, the side portion of the first side of which is connected to the moving jaw plate of the jaw crusher;

[0009] An oil cylinder assembly, arranged on the frame of the jaw crusher;

[0010] Two wedge blocks, arranged in the frame and both connected to the oil cylinder assembly, and the inclined surfaces of the two wedge blocks are in contact with each other; the side portion of the second side of the elbow plate is connected to one of the two wedge blocks;

[0011] The two wedge blocks can move relatively or away from each other under the drive of the oil cylinder assembly to change the overlapping thickness of the two wedge blocks, so as to adjust the position of the moving jaw plate by the elbow plate under the change of the overlapping thickness.

[0012] Optionally, the frame includes a first side plate and a second side plate located on both sides of the moving jaw plate; the oil cylinder assembly includes:

[0013] A first bracket, arranged on the first side plate;

[0014] A second bracket, arranged on the second side plate;

[0015] The first hydraulic cylinder is installed on the first bracket. One of the two wedges is connected to the first hydraulic cylinder, and this wedge moves closer to or away from the second side plate under the drive of the first hydraulic cylinder.

[0016] The second hydraulic cylinder is installed on the second bracket. The other of the two wedges is connected to the second hydraulic cylinder, and this wedge moves closer to or away from the first side plate under the drive of the second hydraulic cylinder.

[0017] Optionally, the first hydraulic cylinder includes a first cylinder barrel and a first piston rod. The first cylinder barrel is arranged on the first bracket. The first piston rod can move along the inner cavity of the first cylinder barrel, and the first piston rod is connected to a wedge.

[0018] The second hydraulic cylinder includes a second cylinder barrel and a second piston rod. The second cylinder barrel is arranged on the second bracket. The second piston rod can move along the inner cavity of the second cylinder barrel, and the second piston rod is connected to the other wedge.

[0019] Optionally, the first piston rod and the second piston rod are coaxially arranged, and the axes of the first piston rod and the second piston rod are both parallel to the width direction of the frame.

[0020] Optionally, the length directions of the two wedges are parallel to each other, and the side surfaces of the two wedges away from the inclined surfaces are both parallel to the length directions of the wedges.

[0021] Optionally, the length direction of the wedge is parallel to the width direction of the frame, and the second side part of the toggle plate is connected to the wedge closer to the movable jaw plate.

[0022] Optionally, it further includes:

[0023] The toggle plate groove includes a connecting plate, and a groove is formed along the length direction of the connecting plate; one side of the connecting plate is connected to the wedge closer to the movable jaw plate, and the other side is connected to the second side part of the toggle plate.

[0024] Optionally, the toggle plate groove is made of an elastic material.

[0025] Optionally, both ends of the toggle plate groove are connected to a connecting seat respectively, and the connecting seat is used to connect the end part of the toggle plate groove to the wedge.

[0026] A jaw crusher according to an embodiment of the second aspect of the present invention is characterized in that it includes the discharge port adjusting device of the first aspect and each implementation manner.

[0027] At least one of the above technical solutions has the following advantages or beneficial effects:

[0028] For a discharge port adjusting device according to an embodiment of the present utility model, a wedge block with two inclined planes in contact with each other is arranged inside a frame, one side of an elbow plate away from a moving jaw plate is connected to one of the two wedge blocks, and then an oil cylinder assembly is used to drive the two wedge blocks to move relatively or away from each other, so as to adjust the position of the moving jaw plate under the change of the overlapping thickness, and further adjust the size of the discharge port. It can be seen that the present utility model can adjust the size of the discharge port only by controlling the moving direction of the wedge block by the oil cylinder assembly, so as to realize the rapid adjustment of the discharge port of a jaw crusher, especially a large jaw crusher.

[0029] The jaw crusher provided by the embodiment of the present utility model is provided with the above-mentioned discharge port adjusting device. Since the discharge port adjusting device has the above technical effects, the jaw crusher provided with the discharge port adjusting device should also have corresponding technical effects. Brief Description of the Drawings

[0030] Figure 1 The structural schematic diagram of a discharge port adjusting device according to an embodiment provided by the present utility model is shown;

[0031] Figure 2 The structural schematic diagram of a jaw crusher provided with the discharge port adjusting device according to an embodiment provided by the present utility model is shown;

[0032] Figure 3 The sectional view of a jaw crusher provided with the discharge port adjusting device according to an embodiment provided by the present utility model is shown.

[0033]

Description of the Reference Numerals

[0034] 1. Elbow plate, 2. Wedge block, 3. Moving jaw plate, 4. Fixed jaw plate, 5. First side plate, 6. Second side plate, 7. First support, 8. Second support, 9. First hydraulic cylinder, 10. Second hydraulic cylinder, 11. Elbow plate groove, 12. Connecting seat, 1101. Connecting plate, 1102. Groove. Detailed Embodiment

[0035] In order to better explain the present utility model for easy understanding, the present utility model will be described in detail below with reference to the drawings through specific embodiments.

[0036] The jaw crusher is commonly known as jaw breaker. It is used as the first-stage crushing in the sand and gravel aggregate and metal mine production lines, and is also called coarse crushing. It consists of two jaw plates, a moving jaw and a fixed jaw, to form a crushing cavity, and is a crusher that simulates the movement of the two jaws of an animal to complete the material crushing operation. After the moving jaw tooth plate and the fixed tooth plate of the jaw crusher are worn, the discharge port becomes larger, and the discharge particle size also becomes larger accordingly, affecting the functions of the subsequent process equipment. At this time, the discharge port needs to be adjusted to a suitable size.

[0037] Currently, the adjustment of the discharge opening of a common jaw crusher is basically achieved by adjusting the gap between the moving jaw and the fixed jaw to adjust the size of the discharge opening. For a small jaw crusher, the position of the moving jaw is directly adjusted by a hydraulic device. However, for a large jaw crusher, the pressure borne by the moving jaw part is difficult for the hydraulic device to withstand. At this time, an elbow plate or a spring needs to be used to adjust the moving jaw of the large jaw crusher, and the adjustment of this part of the structure requires workers to spend a lot of time operating, especially for a large jaw crusher, which needs to be completed with the assistance of mechanical equipment by workers.

[0038] In order to solve at least one of the technical problems existing in the prior art or related technologies, the present utility model provides a discharge opening adjustment device, which includes an elbow plate, an oil cylinder assembly and two wedge blocks. The side part of the first side of the elbow plate is connected to the moving jaw plate of the jaw crusher; the oil cylinder assembly is arranged on the frame of the jaw crusher; the two wedge blocks are arranged in the frame and are both connected to the oil cylinder assembly, and the inclined surfaces of the two wedge blocks are in contact with each other; the side part of the second side of the elbow plate is connected to one of the two wedge blocks; the two wedge blocks can move relatively or away from each other under the drive of the oil cylinder assembly to change the overlapping thickness of the two wedge blocks, so as to adjust the position of the moving jaw plate by the elbow plate under the change of the overlapping thickness. The present utility model arranges two wedge blocks with inclined surfaces in contact with each other in the frame, connects the side of the elbow plate far from the moving jaw plate to one wedge block, and then uses the oil cylinder assembly to drive the two wedge blocks to move relatively or away from each other, so as to adjust the position of the moving jaw plate by the elbow plate under the change of the overlapping thickness, and further adjust the size of the discharge opening. Thus, it can be seen that the present utility model can adjust the size of the discharge opening only by controlling the moving direction of the wedge blocks by the oil cylinder assembly, so as to realize the rapid adjustment of the discharge opening of the jaw crusher, especially a large jaw crusher.

[0039] The discharge opening adjustment device and the jaw crusher according to some embodiments provided by the present utility model will be described below with reference to the accompanying drawings.

[0040] See Figures 1 to 3 , a discharge opening adjustment device according to an embodiment provided by the present utility model is applied to a jaw crusher. The discharge opening adjustment device includes an elbow plate 1, an oil cylinder assembly and two wedge blocks 2. The side part of the first side of the elbow plate 1 is connected to the moving jaw plate 3 of the jaw crusher; the oil cylinder assembly is arranged on the frame of the jaw crusher; the two wedge blocks 2 are arranged in the frame and are both connected to the oil cylinder assembly, and the inclined surfaces of the two wedge blocks 2 are in contact with each other; the side part of the second side of the elbow plate 1 is connected to one of the two wedge blocks 2; the two wedge blocks 2 can move relatively or away from each other under the drive of the oil cylinder assembly to change the overlapping thickness of the two wedge blocks 2, so as to adjust the position of the moving jaw plate 3 by the elbow plate 1 under the change of the overlapping thickness.

[0041] It should be noted that the jaw crusher here can be a large jaw crusher. The jaw crusher further includes a fixed jaw plate 4, which is installed on the frame and is arranged opposite to the movable jaw plate 3. The gap between the bottom of the movable jaw plate 3 and the bottom of the fixed jaw plate 4 is the discharge port, and the size of this discharge port changes with the angle of rotation of the movable jaw plate 3 towards the fixed jaw plate 4.

[0042] Here, the shapes and sizes of the two wedges 2 can be the same, and the two wedges 2 can be stacked in the frame to form a rectangle, that is, after the two wedges 2 are respectively moved to the inclined surfaces of the two wedges 2 under the drive of the oil cylinder assembly and then stacked, the two wedges 2 are combined into a rectangle. Among them, when the two wedges 2 move towards each other under the drive of the oil cylinder assembly, due to the gradually increasing contact surface between the inclined surfaces of the two wedges 2, the overlapping thickness of the two wedges 2 also gradually increases. Therefore, the toggle plate 1 connected to the wedge 2 moves towards the direction close to the fixed jaw plate 4 as the overlapping thickness of the two wedges 2 increases, so as to reduce the size of the discharge port; when the two wedges 2 move away from each other under the drive of the oil cylinder assembly, due to the gradually decreasing contact surface between the inclined surfaces of the two wedges 2, therefore, the toggle plate 1 connected to the wedge 2 moves away from the fixed jaw plate 4 as the overlapping thickness of the wedge 2 decreases, so as to increase the size of the discharge port.

[0043] In this embodiment, by arranging the wedges 2 with their inclined surfaces in contact with each other in the frame, connecting the toggle plate 1 to one of the two wedges 2, and then using the oil cylinder assembly to drive the two wedges 2 to move relative to or away from each other, so that the position of the movable jaw plate 3 can be adjusted under the change of the overlapping thickness of the toggle plate 1, and further the size of the discharge port can be adjusted. Thus, it can be seen that the utility model can adjust the size of the discharge port only by controlling the moving direction of the wedge 2 by the oil cylinder assembly, so as to realize the quick adjustment of the discharge port of the jaw crusher, especially a large jaw crusher.

[0044] In some possible implementation manners, the frame includes a first side plate 5 and a second side plate 6 located on both sides of the movable jaw plate 3; the oil cylinder assembly includes a first bracket 7, a second bracket 8, a first hydraulic cylinder 9 and a second hydraulic cylinder 10. The first bracket 7 is arranged on the first side plate 5; the second bracket 8 is arranged on the second side plate 6; the first hydraulic cylinder 9 is installed on the first bracket 7, and one of the two wedges 2 is connected to the first hydraulic cylinder 9, and this wedge 2 moves closer to or away from the second side plate 6 under the drive of the first hydraulic cylinder 9; the second hydraulic cylinder 10 is installed on the second bracket 8, and the other of the two wedges 2 is connected to the second hydraulic cylinder 10, and this wedge 2 moves closer to or away from the first side plate 5 under the drive of the second hydraulic cylinder 10.

[0045] It should be noted that one side of the fixed jaw plate 4 is connected to the first side plate 5, the other side of the fixed jaw plate 4 is connected to the second side plate 6, and the movable jaw plate 3 is respectively hinged to the first side plate 5 and the second side plate 6 through a rotating shaft.

[0046] Here, a first through hole is formed in the first side plate 5, and a second through hole is formed in the second side plate 6. The first bracket 7 is arranged on the side of the first side plate 5 away from the second side plate 6, and the second bracket 8 is arranged on the side of the second side plate 6 away from the first side plate 5. After the first hydraulic cylinder 9 is arranged on the first bracket 7, it can pass through the first through hole and be connected to a wedge block 2, and after the second hydraulic cylinder 10 is arranged on the second bracket 8, it can pass through the second through hole and be connected to another wedge block 2.

[0047] In this embodiment, by installing the first hydraulic cylinder 9 on the first side plate 5 through the first bracket 7 and installing the second hydraulic cylinder 10 on the second side plate 6 through the second bracket 8, then connecting the first hydraulic cylinder 9 to a wedge block 2 and connecting the second hydraulic cylinder 10 to another wedge block 2, the two wedge blocks 2 can be independently moved under the respective drives of the first hydraulic cylinder 9 and the second hydraulic cylinder 10, so as to realize the respective control of the movement of the two wedge blocks 2, which is beneficial to adjusting the overlapping thickness of the two wedge blocks 2.

[0048] Further, the first hydraulic cylinder 9 includes a first cylinder barrel and a first piston rod. The first cylinder barrel is arranged on the first bracket 7, the first piston rod can move along the inner cavity of the first cylinder barrel, and the first piston rod is connected to a wedge block 2; the second hydraulic cylinder 10 includes a second cylinder barrel and a second piston rod. The second cylinder barrel is arranged on the second bracket 8, the second piston rod can move along the inner cavity of the second cylinder barrel, and the second piston rod is connected to another wedge block 2.

[0049] It should be noted that the first piston rod can pass through the first through hole and be connected to a wedge block 2, and the second piston rod can pass through the second through hole and be connected to another wedge block 2.

[0050] Here, the first cylinder barrel can be movably connected to the first bracket 7, so that the first cylinder barrel can axially rotate on the first side plate 5 to drive the axial rotation of the wedge block 2 connected to the first piston rod; correspondingly, the second cylinder barrel can be movably connected to the second bracket 8, so that the second cylinder barrel can axially rotate on the second side plate 6 to drive the axial rotation of the wedge block 2 connected to the second piston rod; thus, by adjusting the rotation angle of the first cylinder barrel on the first bracket 7 and adjusting the rotation angle of the second cylinder barrel on the second bracket 8, the axial rotation angles of the two wedge blocks 2 in the frame can be adjusted, and further the position of the toggle plate 1 relative to the moving jaw plate 3 can be adjusted.

[0051] Furthermore, the first piston rod and the second piston rod are coaxially arranged, and the axes of the first piston rod and the second piston rod are both parallel to the width direction of the frame.

[0052] It should be noted that the wedge block 2 connected to the first piston rod is coaxially arranged with the first piston rod, and the wedge block 2 connected to the second piston rod is coaxially arranged with the second piston rod.

[0053] In this embodiment, by coaxially arranging the first piston rod and the second piston rod, when the two wedges 2 move towards or away from each other, the two wedges 2 can move along the same straight line, so as to ensure that the inclined surfaces on the two wedges 2 remain in contact during the movement process.

[0054] In some possible implementation manners, the length directions of the two wedges 2 are parallel to each other, and the side surfaces of the two wedges 2 away from the inclined surfaces are both parallel to the length direction of the wedges 2.

[0055] Here, both of the two wedges 2 include a narrow end and a wide end, the inclined surface of the wedge 2 gradually inclines outward from the narrow end to the wide end, and the first piston rod and the second piston rod are respectively connected to the wide end of one wedge 2.

[0056] In this embodiment, by arranging the length directions of the two wedges 2 to be parallel to each other and making the side surfaces of the two wedges 2 away from the inclined surfaces be both parallel to the length direction of the wedges 2, the two wedges 2 can form a rectangle after being superposed, so that the toggle plate 1 can translate along the superposed thickness direction of the two wedges 2.

[0057] Further, the length direction of the wedge 2 is parallel to the width direction of the frame, and the second side part of the toggle plate 1 is connected to the wedge 2 close to the moving jaw plate 3.

[0058] Here, by arranging the length direction of the wedge 2 to be parallel to the width direction of the frame, the toggle plate 1 connected to the wedge 2 can translate along the length direction of the frame with the change of the superposed thickness of the two wedges 2.

[0059] In some possible implementation manners, the device further includes a toggle plate groove 11, the toggle plate groove 11 includes a connecting plate 1101, and a groove 1102 is opened along the length direction of the connecting plate 1101; one side of the connecting plate 1101 is connected to the wedge 2 close to the moving jaw plate 3, and the other side is connected to the second side part of the toggle plate 1.

[0060] Here, by connecting the toggle plate 1 and the wedge 2 through the toggle plate groove 11, a soft connection between the toggle plate 1 and the wedge 2 can be realized, so as to facilitate adjusting the angle between the toggle plate 1 and the wedge 2, and further facilitate adjusting the approach or separation of the toggle plate 1 towards the fixed jaw plate 4 by the movement of the two wedges 2 towards or away from each other.

[0061] Further, the toggle plate groove 11 is made of an elastic material.

[0062] Here, the elastic material can be rubber.

[0063] In this embodiment, by making the toggle plate groove 11 be made of an elastic material, when the two wedges 2 move relatively or away from each other, the toggle plate 1 can immediately adjust its set angle with the change of the superposed thickness of the two wedges 2, and further quickly adjust the size of the discharge port.

[0064] Furthermore, both ends of the toggle plate groove 11 are respectively connected to a connecting seat 12, and the connecting seat 12 is used to connect the end of the toggle plate groove 11 to the wedge block 2.

[0065] Here, both ends of the toggle plate groove 11 and the connecting seat 12 are detachably connected by bolt assemblies.

[0066] A jaw crusher according to an embodiment of the present invention includes a discharge port adjusting device as described in any of the above embodiments.

[0067] Since the jaw crusher of this embodiment includes any of the discharge port adjusting devices in the above first aspect, it has the beneficial effects of any of the above embodiments, which will not be elaborated here.

[0068] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0069] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0071] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "exemplary embodiment", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0072] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A discharge opening adjustment device, applied to a jaw crusher, characterized in that: include: A toggle plate, a first side portion of which is connected to a movable jaw plate of a jaw crusher; An oil cylinder assembly is arranged on the frame of the jaw crusher; Two wedge blocks are arranged in the frame and are connected to the oil cylinder assembly, and the inclined surfaces of the two wedge blocks are in contact with each other; the second side portion of the toggle plate is connected to one of the two wedge blocks; The two wedge blocks can move relative to or away from each other under the drive of the oil cylinder assembly to change the overlapping thickness of the two wedge blocks, so that the toggle plate can adjust the position of the movable jaw plate according to the change of the overlapping thickness.

2. The discharge port adjustment device according to claim 1, characterized in that: The frame includes a first side plate and a second side plate located on both sides of the movable jaw plate; the cylinder assembly includes: A first bracket, disposed on the first side plate; A second bracket, disposed on the second side plate; A first hydraulic cylinder is installed on the first bracket, one of the two wedges is connected to the first hydraulic cylinder, and the wedge moves closer to or farther from the second side plate under the drive of the first hydraulic cylinder; The second hydraulic cylinder is installed on the second bracket, and the other of the two wedge blocks is connected to the second hydraulic cylinder. The wedge block moves closer to or farther from the first side plate under the drive of the second hydraulic cylinder.

3. The discharge port adjustment device according to claim 2, characterized in that: The first hydraulic cylinder comprises a first cylinder barrel and a first piston rod, the first cylinder barrel is arranged on the first bracket, the first piston rod can move along the inner cavity of the first cylinder barrel, and the first piston rod is connected to one of the wedge blocks; The second hydraulic cylinder includes a second cylinder barrel and a second piston rod, the second cylinder barrel is arranged on the second bracket, the second piston rod can move along the inner cavity of the second cylinder barrel, and the second piston rod is connected to the other wedge block.

4. The discharge port adjustment device according to claim 3, characterized in that: The first piston rod and the second piston rod are coaxially arranged, and the axes of the first piston rod and the second piston rod are parallel to the width direction of the frame.

5. The discharge port adjustment device according to claim 1, characterized in that: The length directions of the two wedge blocks are parallel to each other, and the side surfaces of the two wedge blocks away from the inclined surface are both parallel to the length directions of the wedge blocks.

6. The discharge port adjustment device according to claim 5, characterized in that: The length direction of the wedge block is parallel to the width direction of the frame, and the second side portion of the toggle plate is connected to the wedge block close to one side of the movable jaw plate.

7. The discharge port adjustment device according to claim 1, characterized in that: Also includes: The toggle plate groove comprises a connecting plate, wherein a groove is provided along the length direction; one side of the connecting plate is connected to a wedge block close to one side of the movable jaw plate, and the other side is connected to the second side of the toggle plate.

8. The discharge port adjustment device according to claim 7, characterized in that: The toggle plate groove is made of elastic material.

9. The discharge port adjustment device according to claim 7, characterized in that: Both ends of the toggle plate slot are respectively connected to a connecting seat, and the connecting seat is used to connect the end of the toggle plate slot with the wedge block.

10. A jaw crusher, characterized in that: It comprises a discharge opening adjustment device as described in any one of claims 1 to 9.

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