A jaw crusher apparatus

Abstract

The utility model provides a kind of jaw crusher, including shell, the upper end of shell is provided with feeding hopper, the upper end of shell is provided with discharge gate, the side of feeding hopper in shell is provided with fixed tooth plate downward, multiple vertical fixed teeth are provided on fixed tooth plate, the upper end of shell is rotatably connected with eccentric shaft in the side of feeding hopper away from fixed tooth plate, and the both ends of eccentric shaft are set with belt flywheel outside shell;Eccentric shaft is rotatably connected with connecting shaft sleeve, connecting shaft sleeve is connected with the dynamic jaw pressing plate matched with fixed tooth plate downward, the side of dynamic jaw pressing plate towards fixed tooth plate is provided with multiple vertical movable teeth, and rotatably connected with the support rod capable of vertical rotation between the inner wall of dynamic jaw pressing plate and shell, and rotatably connected with telescopic push rod between the inner wall of shell and the lower part of dynamic jaw pressing plate, and telescopic push rod is provided with support spring.The utility model can be more fully broken stone, so that stone is more uniform after breaking.

Description

Technical Field

[0001] This utility model belongs to the field of material crushing technology and relates to a jaw crusher. Background Technology Jaw crushers are widely used material crushing equipment in mining, construction, metallurgy, and other fields. Their core working principle is based on the periodic squeezing and splitting action between the moving jaw and the fixed jaw. A traditional jaw crusher typically consists of a frame, eccentric shaft, moving jaw, fixed jaw, toggle plate, and adjusting device. An electric motor drives the eccentric shaft to rotate, causing the moving jaw to reciprocate up and down, thus achieving repeated crushing and discharge of material within the crushing chamber. Its simple structure, convenient maintenance, and large crushing ratio make it a core piece of equipment for coarse and medium crushing operations.

[0002] However, in practical applications, jaw crushers still face significant technical bottlenecks. For example, when processing stones with high hardness or irregular shapes, the material may be difficult to completely crush within the crushing chamber due to localized stress concentration or uneven filling. Forcibly applying greater pressure can lead to equipment overload, bearing damage, or even jaw breakage. To avoid such problems, existing crushers generally employ self-adaptive gap adjustment mechanisms, such as hydraulic systems or mechanical elastic structures, that automatically widen the crushing chamber gap when abnormal resistance is detected, allowing incompletely crushed stones to fall from the discharge port. While this design effectively prevents equipment overload and blockage, it also results in some stones being discharged without being fully crushed, leading to resource waste and uneven product particle size. Utility Model Content

[0003] The purpose of this invention is to provide a jaw crusher that can more fully crush stone materials, resulting in more uniform stone particles after crushing.

[0004] To solve the above technical problems, this utility model provides a jaw crusher, including a shell, a feeding hopper at the upper end of the shell, a discharge port at the upper end of the shell, a fixed toothed plate arranged downward on one side of the feeding hopper inside the shell, the fixed toothed plate being provided with multiple vertical fixed teeth, and an eccentric shaft rotatably connected to the upper end of the shell on the side of the feeding hopper away from the fixed toothed plate, both ends of the eccentric shaft extending out of the shell and provided with belt flywheels; The eccentric shaft is fitted with a connecting bushing that is rotatably connected to it. The connecting bushing is downwardly connected to a movable jaw pressure plate that cooperates with the fixed toothed plate. The movable jaw pressure plate has multiple vertical movable teeth on the side facing the fixed toothed plate. The side of the movable jaw pressure plate away from the fixed toothed plate is rotatably connected to the inner wall of the housing with a support rod that can rotate vertically. The lower part of the side of the movable jaw pressure plate away from the fixed toothed plate is rotatably connected to the inner wall of the housing with a telescopic push rod. The telescopic push rod is equipped with a support spring. The fixed toothed plate is rotatably connected to an adaptive pressure plate that can rotate vertically on the side away from its vertical fixed teeth. The fixed toothed plate has a vertical movable hole between every two vertical fixed teeth. The adaptive pressure plate has multiple adaptive pressure teeth on one side that correspond one-to-one with the vertical movable holes. Both sides of the adaptive pressure plate are rotatably connected to the edge of the moving jaw pressure plate with connecting rods.

[0005] By adopting the above technical solution, the power structure is connected to the belt flywheel, causing the belt flywheel to rotate. During the rotation, the eccentric shaft drives the moving jaw pressure plate to swing back and forth. Due to the connection of the support rod and the telescopic push rod, the moving jaw pressure plate can swing up and down and left and right. The movement of the moving jaw pressure plate simultaneously pulls the fixed tooth plate to move back and forth. After the stone is added into the feeding hopper, the stone is crushed downward by the compression of the vertical fixed teeth and the vertical movable teeth. During the process, the adaptive pressure teeth also extend from the vertical movable holes to apply pressure to other parts of the stone, making the stone more fully crushed. When the stone is not fully crushed by the vertical fixed teeth and the vertical movable teeth, the downward movement pushes the moving jaw pressure plate to compress the support spring, increasing the gap between the fixed tooth plate and the moving jaw pressure plate. At this time, the fixed tooth plate can be further pulled to drive the adaptive pressure teeth to squeeze the stone, making it crushed, and finally discharged from the discharge port.

[0006] The present invention is further configured such that the telescopic push rod includes a hydraulic telescopic rod and a telescopic support rod connected end to end, the telescopic support rod includes an inner rod and an outer sleeve that are slidably connected inside and outside, and a first limiting ring is provided at both ends of the telescopic support rod, and the support spring is sleeved on the telescopic support rod and located between the two limiting rings.

[0007] The present invention is further configured such that telescopic rods are rotatably connected to the edges of the moving jaw pressure plate on both sides of the adaptive pressure plate. The telescopic rods include an inner rod and an outer sleeve that are slidably connected. A second limiting ring is provided at both ends of the telescopic rods. A tension spring located between the two second limiting rings is provided on the telescopic rod.

[0008] The present invention is further configured such that the upper edge of the fixed toothed plate is inclined toward the moving jaw pressure plate.

[0009] The present invention is further configured such that a plurality of first stiffening strips are provided on the side of the fixed tooth plate away from the vertical fixed tooth.

[0010] The present invention is further configured such that multiple second stiffening bars are provided on the side of the movable jaw pressure plate away from the vertical movable tooth.

[0011] The present invention is further configured such that the vertical fixed teeth, the vertical movable teeth, and the adaptive pressure teeth are distributed alternately.

[0012] Compared with the prior art, the present invention has the following beneficial effects: Firstly, this utility model adds an adaptive pressure plate to one side of the fixed toothed plate. The adaptive pressure plate is connected to the movable jaw pressure plate by a connecting rod. When the fixed toothed plate and the movable jaw pressure plate cannot crush the stone, the movable jaw pressure plate can pull the adaptive pressure plate to further squeeze and crush the stone, increasing the crushing rate of the stone and making the crushed stone particles more uniform. Secondly, during stone crushing, the telescopic push rod integrates a hydraulic telescopic rod. The extension and retraction of the hydraulic telescopic rod can adjust the gap between the fixed tooth plate and the lower edge of the moving jaw pressure plate, making it easy to adjust the gap according to the crushing needs and thus control the size of the crushed particles. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial sectional view of the present invention; Figure 3 Used to demonstrate the connection between the eccentric shaft and the belt flywheel; Figure 4 Used to showcase the internal structure of the casing; Figure 5 Used to demonstrate the vertical movable teeth on the moving jaw pressure plate; Figure 6 Used to demonstrate the connection between the adaptive pressure plate and the fixed toothed plate.

[0014] The components are as follows: 1. Shell; 2. Feed hopper; 3. Discharge port; 4. Fixed tooth plate; 5. Vertical fixed tooth; 6. First stiffening bar; 7. Eccentric shaft; 8. Belt flywheel; 9. Connecting bushing; 10. Moving jaw pressure plate; 11. Vertical movable tooth; 12. Second stiffening bar; 13. Support rod; 14. Hydraulic telescopic rod; 15. Telescopic support rod; 16. First limiting ring; 17. Support spring; 18. Adaptive pressure plate; 19. Vertical movable hole; 20. Adaptive pressure tooth; 21. Connecting rod; 22. Telescopic rod; 23. Second limiting ring; 24. Tension spring. Detailed Implementation

[0015] The jaw crusher of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0016] Example, refer to Figure 1-6A jaw crusher includes a shell 1, a feeding hopper 2 at the upper end of the shell 1, and a discharge port 3 at the upper end of the shell 1. Inside the shell 1, a fixed toothed plate 4 is disposed downward on one side of the feeding hopper 2. The fixed toothed plate 4 is provided with multiple vertical fixed teeth 5, and the upper edge of the fixed toothed plate 4 is inclined towards the side of its vertical fixed teeth 5. Multiple first stiffening bars 6 are provided on the side of the fixed toothed plate 4 away from the vertical fixed teeth 5. An eccentric shaft 7 is rotatably connected to the upper end of the shell 1 on the side of the feeding hopper 2 away from the fixed toothed plate 4. Both ends of the eccentric shaft 7 extend out of the shell 1 and are provided with a belt flywheel 8.

[0017] The eccentric shaft 7 is fitted with a connecting bushing 9 that is rotatably connected to it. The connecting bushing 9 is connected downward to a movable jaw pressure plate 10 that cooperates with the fixed toothed plate 4. The movable jaw pressure plate 10 has multiple vertical movable teeth 11 on the side facing the fixed toothed plate 4, and multiple second stiffening bars 12 on the side of the movable jaw pressure plate 10 away from the vertical movable teeth 11. A vertically rotatable support rod 13 is rotatably connected between the side of the movable jaw pressure plate 10 away from the fixed tooth plate 4 and the inner wall of the housing 1. A telescopic push rod is rotatably connected between the lower part of the side of the movable jaw pressure plate 10 away from the fixed tooth plate 4 and the inner wall of the housing 1. The telescopic push rod includes a hydraulic telescopic rod 14 and a telescopic support rod 15 connected end to end. The telescopic support rod 15 includes an inner rod and an outer sleeve that are slidably connected inside and outside. A first limiting ring 16 is provided at both ends of the telescopic support rod 15. A support spring 17 located between the two limiting rings is sleeved on the telescopic support rod 15. The extension and retraction of the hydraulic telescopic rod 14 can adjust the gap between the fixed tooth plate 4 and the lower side of the movable jaw pressure plate 10. The design of the telescopic support rod 15 and the support spring 17 allows the gap between the fixed tooth plate 4 and the lower side of the movable jaw pressure plate 10 to open adaptively when the pressure is too high.

[0018] A vertically rotatable adaptive pressure plate 18 is rotatably connected to the side of the fixed tooth plate 4 away from its vertical fixed teeth 5. A vertical movable hole 19 is provided between every two vertical fixed teeth 5 on the fixed tooth plate 4. Multiple adaptive pressure teeth 20, corresponding one-to-one with the vertical movable holes 19, are provided on one side of the adaptive pressure plate 18. The vertical fixed teeth 5, vertical movable teeth 11, and adaptive pressure teeth 20 are staggered, allowing them to apply pressure to different positions of the stone in an alternating manner. A connecting rod 21 is rotatably connected to the edge of the movable jaw pressure plate 10 on both sides of the adaptive pressure plate 18, so that each movement of the movable jaw pressure plate 10 pulls the adaptive pressure plate 18 to move and squeeze the stone through the adaptive pressure teeth 20. Both sides of the adaptive pressure plate 18 are rotatably connected to the edge of the moving jaw pressure plate 10 by a telescopic rod 22. The telescopic rod 22 includes an inner rod and an outer sleeve that are slidably connected. Both ends of the telescopic rod 22 are provided with a second limiting ring 23. The telescopic rod 22 is covered by a tension spring 24 located between the two second limiting rings 23, so that when the pressure is too high, the tension spring 24 can be pulled, so that the gap between the fixed tooth plate 4 and the lower side of the moving jaw pressure plate 10 can be adaptively opened.

[0019] Working principle: The power structure is connected to the belt flywheel 8, causing the belt flywheel 8 to rotate. During the rotation, the eccentric shaft 7 drives the moving jaw pressure plate 10 to swing back and forth. The connection between the support rod 13 and the telescopic push rod allows the moving jaw pressure plate 10 to swing up, down, left, and right. The movement of the moving jaw pressure plate 10 simultaneously pulls the fixed tooth plate 4 to move back and forth. After stones are added to the feeding hopper 2, the stones are crushed downwards by the compression of the vertical fixed teeth 5 and the vertical movable teeth 11. During this process, the adaptive pressure teeth 20 also extend from the vertical movable hole 19 to crush the stones. Pressure is applied to other parts of the material to crush it more thoroughly. When the material is not fully crushed by the vertical fixed tooth 5 and the vertical movable tooth 11, the downward movement pushes the movable jaw pressure plate 10 to compress the support spring 17, increasing the gap between the fixed tooth plate 4 and the movable jaw pressure plate 10. At this time, the fixed tooth plate 4 can be further pulled to drive the adaptive pressure tooth 20 to squeeze the material and crush it. If it still cannot be crushed, the tension spring 24 will be pulled to increase the distance between the adaptive pressure plate 18 and the movable jaw pressure plate 10, so that the material is discharged from the outlet 3.

[0020] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0021] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A jaw crusher, comprising a shell (1), wherein a feeding hopper (2) is provided at the upper end of the shell (1), and a discharge port (3) is provided at the upper end of the shell (1), characterized in that, Inside the housing (1), a fixed toothed plate (4) is provided downward on one side of the feeding hopper (2). The fixed toothed plate (4) is provided with multiple vertical fixed teeth (5). An eccentric shaft (7) is rotatably connected to the upper end of the housing (1) on the side of the feeding hopper (2) away from the fixed toothed plate (4). Both ends of the eccentric shaft (7) extend out of the housing (1) and are provided with belt flywheels (8). The eccentric shaft (7) is fitted with a connecting bushing (9) that is rotatably connected to it. The connecting bushing (9) is connected downward to a movable jaw pressure plate (10) that cooperates with the fixed toothed plate (4). The movable jaw pressure plate (10) has multiple vertical movable teeth (11) on the side facing the fixed toothed plate (4). The side of the movable jaw pressure plate (10) away from the fixed toothed plate (4) is rotatably connected to the inner wall of the housing (1) with a support rod (13) that can rotate vertically. The lower part of the side of the movable jaw pressure plate (10) away from the fixed toothed plate (4) is rotatably connected to the inner wall of the housing (1) with a telescopic push rod. A support spring (17) is provided on the telescopic push rod. The fixed tooth plate (4) is rotatably connected to an adaptive pressure plate (18) capable of vertical rotation on the side away from its vertical fixed tooth (5). The fixed tooth plate (4) has a vertical movable hole (19) between each pair of vertical fixed teeth (5). The adaptive pressure plate (18) has multiple adaptive pressure teeth (20) on one side that correspond one-to-one with the vertical movable holes (19). Both sides of the adaptive pressure plate (18) are rotatably connected to the edge of the moving jaw pressure plate (10) with a connecting rod (21).

2. The jaw crusher according to claim 1, characterized in that, The telescopic push rod includes a hydraulic telescopic rod (14) and a telescopic support rod (15) connected end to end. The telescopic support rod (15) includes an inner rod and an outer tube that are slidably connected inside and outside. Both ends of the telescopic support rod (15) are provided with a first limiting ring (16). The support spring (17) is sleeved on the telescopic support rod (15) and located between the two limiting rings.

3. The jaw crusher according to claim 1, characterized in that, Both sides of the adaptive pressure plate (18) are rotatably connected to the edge of the moving jaw pressure plate (10) with telescopic rods (22). The telescopic rods (22) include an inner rod and an outer tube that are slidably connected. Both ends of the telescopic rods (22) are provided with second limiting rings (23). The telescopic rods (22) are covered with tension springs (24) located between the two second limiting rings (23).

4. A jaw crusher according to claim 1, characterized in that, The upper side of the fixed toothed plate (4) is inclined toward the moving jaw pressure plate (10).

5. A jaw crusher according to claim 1, characterized in that, The fixed tooth plate (4) is provided with multiple first stiffening strips (6) on the side away from the vertical fixed tooth (5).

6. A jaw crusher according to claim 1, characterized in that, The moving jaw pressure plate (10) is provided with multiple second stiffening bars (12) on the side away from the vertical moving tooth (11).

7. A jaw crusher according to claim 1, characterized in that, The vertical fixed teeth (5), the vertical movable teeth (11), and the adaptive pressure teeth (20) are staggered.

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