Discharge port adjusting device without hydraulic pressure and pull rod spring and jaw crusher

Abstract

The invention provides a hydraulic-pressure-free and pull-rod-spring-free discharging opening adjusting device and a jaw crusher. The hydraulic-pressure-free and pull-rod-spring-free discharging opening adjusting device comprises a driving device, a transmission device, a spiral adjusting mechanism, a guiding device and a combined toggle plate structure. The spiral adjusting mechanism comprises an adjusting screw rod, an adjusting nut and an adjusting frame, the driving device is in transmission connection with the adjusting screw rod through the transmission device, the adjusting frame can move in the axial direction of the adjusting screw rod through threaded fit of the adjusting screw rod and the adjusting nut, and the combined toggle plate structure can be driven by the spiral adjusting mechanism to move in the axial direction of the guide hole. Stepless speed regulation is achieved through the driving motor to drive the small chain wheel to rotate, then the large chain wheel drives the adjusting screw rod to rotate together, and therefore the adjusting nut, the adjusting frame and the combined toggle plate structure are driven to move front and back together, and adjustment of the discharging opening is achieved; the fine adjustment is realized by adopting the screw rod and the nut with small screw pitch, so that the high-precision adjustment function of the discharge port is realized; the structure is simple and installation and maintenance are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of crushing devices, and in particular to a discharge port adjustment device without hydraulic pressure and pull rod springs and a jaw crusher. Background Art

[0002] Jaw crusher is a kind of crushing equipment widely used in mining, metallurgy, building materials, chemical industry and other fields. It is mainly used for coarse and medium crushing of various ores and bulk materials. It crushes materials through the periodic relative movement between the movable jaw plate (moving jaw) and the fixed jaw plate (fixed jaw).

[0003] A Chinese patent with publication number CN112007711B discloses a jaw crusher comprising a frame, side panels, a mounting seat, a static jaw assembly, and a movable jaw assembly. The frame has two side panels fixedly mounted thereon, the side panels being provided with mounting seats having a cover portion fixedly mounted to the side panels via a cover connector. The static jaw assembly is fixedly mounted between the two side panels. The movable jaw assembly has an eccentric spindle at one end, which is constrained by the cover portion through the cover connector and rotatably mounted in the mounting seat between the two side panels. The eccentric spindle is driven by a drive mechanism to reciprocate the movable jaw assembly toward or away from the static jaw assembly. The reaction force of the working force generated by the movable jaw assembly during operation has a component acting on the side panels that is greater than the component acting in the direction of compression of the cover connector through the cover portion.

[0004] The discharge port adjustment structure of the jaw crusher in the existing technology adopts an adjustment method of hydraulic adjustment, tensioning of the pull rod spring, and transmission of the inclined iron and the toggle plate. This adjustment method requires a supporting hydraulic station, a hydraulic cylinder, etc., resulting in high cost, complex supporting, and poor adjustment performance (fluctuating). As a result, the adjustment accuracy is poor and the crushed stone particle size is difficult to control. It is difficult to achieve a more ideal crushed stone particle size, especially the tensioning spring. Each tightening is time-consuming and laborious.

[0005] Therefore, it is necessary to provide a discharge port adjustment device without hydraulic pressure and pull rod spring to improve the traditional adjustment method and solve the problems of difficult adjustment, poor precision and high cost in the existing technology. Summary of the Invention

[0006] In view of the defects in the prior art, the object of the present invention is to provide a discharge port adjustment device and a jaw crusher without hydraulic pressure and pull rod spring.

[0007] According to the present invention, a discharge port adjustment device without hydraulic pressure and pull rod spring is provided, which includes: a driving device, a transmission device, a spiral adjustment mechanism, a guide device and a combined toggle plate structure;

[0008] The spiral adjustment mechanism includes: an adjustment screw, an adjustment nut, and an adjustment frame, wherein the adjustment nut is fastened to the adjustment frame, the adjustment screw and the adjustment nut are connected by threads, the driving device is connected to the adjustment screw by a transmission device, the adjustment screw can rotate around its axis, and the adjustment frame can move along the axis of the adjustment screw through the threaded engagement between the adjustment screw and the adjustment nut;

[0009] The combined toggle plate structure comprises: a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are connected by a connecting pin, and a side of the first connecting plate away from the second connecting plate is connected to the adjustment frame;

[0010] The guide device includes a guide plate, the spiral adjustment mechanism is installed inside the guide plate, a guide hole is provided inside the guide plate, the adjustment screw extends through the guide hole to the outside of the guide plate, and the combined toggle plate structure is driven by the spiral adjustment mechanism to move axially along the guide hole.

[0011] Preferably, the driving device includes: a control device, a reducer, and a driving motor. The control device is electrically connected to the driving motor, the output end of the driving motor is connected to the input end of the reducer, and the output end of the reducer is connected to the transmission device.

[0012] Preferably, the transmission device includes: a large sprocket, a small sprocket, and a chain. The small sprocket is connected to the large sprocket through the chain. The small sprocket is fastened to the output shaft of the reducer. The small sprocket can rotate around the axial direction of the output shaft of the reducer. The large sprocket is fastened to the end of the adjusting screw away from the adjusting nut. The large sprocket is driven by the small sprocket to rotate around the axial direction of the adjusting screw. The adjusting screw is rotated by the large sprocket.

[0013] Preferably, a limit block is provided in the middle of the adjusting screw, and the limit block is provided on the outside of the adjusting nut. When the limit block is pressed against the adjusting nut, the adjusting screw does not contact the adjusting frame cross brace of the adjusting frame.

[0014] Preferably, the guide plate includes an upper guide plate and a lower guide plate arranged in parallel, a guide seat is connected between the upper guide plate and the lower guide plate, a guide hole is opened in the middle of the guide seat, and the two sides of the adjustment frame are respectively slidably matched with the upper guide plate and the lower guide plate.

[0015] Preferably, a motor seat is provided on the guide plate, the driving device is fastened to the motor seat, reinforcement plates are symmetrically provided on both sides of the guide plate, and the guide plate is also provided with lifting ears.

[0016] Preferably, the sides of the first connecting plate and the second connecting plate that are close to each other are both arc-shaped, a pin seat with a hole is provided on the second connecting plate, a pin hole is opened on the first connecting plate, and the first connecting plate and the second connecting plate are fastened together by a connecting pin passing through the pin seat and the pin hole.

[0017] Preferably, a plurality of connection blocks are installed on a side of the first connection plate away from the second connection plate, and the first connection plate is connected to the adjustment frame through the connection blocks;

[0018] A plurality of connecting blocks are installed on a side of the second connecting plate away from the first connecting plate, and the second connecting plate is connected to the movable jaw and the movable tooth plate through the connecting blocks.

[0019] Preferably, the first connecting plate and the second connecting plate are both provided with connecting shafts for mounting the connecting blocks, the connecting shafts are provided with copper sleeves, and the connecting shafts cooperate with the copper sleeves to form a hinged structure.

[0020] According to a jaw crusher provided by the present invention, the above-mentioned discharge port adjustment device without hydraulic pressure and pull rod spring is adopted, and also includes: a fixed tooth plate, a movable jaw, a movable tooth plate, a pulley and an eccentric shaft. The two sides of the guide plate are respectively fastened to the frame side plates on both sides of the jaw crusher, and the second connecting plate is connected to the movable jaw and the movable tooth plate.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention realizes stepless speed regulation by driving a motor to drive the small sprocket to rotate, and the small sprocket drives the large sprocket to rotate together through the chain, and then the large sprocket drives the adjusting screw to rotate together, thereby driving the adjusting nut, the adjusting frame, and the combined toggle plate structure to move back and forth together, and the movable tooth plate forms an opening and closing motion with the fixed tooth plate when performing reciprocating curved motion, thereby realizing adjustment of the discharge port; by adopting a reasonable adjustment structure form, that is, a small-pitch screw rod and nut to realize micro-adjustment, a high-precision adjustment function of the discharge port is realized through micro-adjustment; the structure is simple, can be directly installed on the jaw crusher, is easy to install and maintain, greatly reduces the use cost, is easy to operate and can realize high-precision adjustment, which helps to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a discharge port adjustment device without hydraulic pressure and pull rod springs, which is mainly embodied in the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the driving device mainly embodied in the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the chain mainly embodied in the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the spiral adjustment mechanism mainly embodied in the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the adjustment frame mainly embodied in the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the guide device mainly embodied in the present invention;

[0030] Figure 7 This is a cross-sectional view of a guide device mainly embodying the present invention;

[0031] Figure 8 This is a structural diagram of a combined bracket structure mainly embodied in the present invention;

[0032] Figure 9 This is a structural diagram of a connecting plate of a combined bracket structure mainly embodied in the present invention;

[0033] Figure 10 This is a structural diagram of a connecting block of a combined bracket structure mainly embodied in the present invention;

[0034] Figure 11 This is a structural diagram of the connecting shaft of the combined bracket structure mainly embodied in the present invention;

[0035] Figure 12 This is a structural diagram of a copper sleeve that mainly embodies a combined bracket structure of the present invention;

[0036] Figure 13 This is a structural diagram of the connecting pin of the combined toggle plate structure mainly embodied in the present invention;

[0037] Figure 14 The figure is a schematic structural diagram of a jaw crusher mainly embodied in the present invention.

[0038] As shown in the figure:

[0039] DETAILED DESCRIPTION

[0040] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0041] Example 1

[0042] like Figure 1-14 As shown, according to the present invention, a discharge port adjustment device without hydraulic pressure and pull rod spring is provided. The discharge port adjustment device 1 includes: a driving device 11, a transmission device 12, a spiral adjustment mechanism 13, a guide device 14 and a combined toggle plate structure 15; the spiral adjustment mechanism 13 includes: an adjusting screw 131, an adjusting nut 132 and an adjusting frame 133, the adjusting nut 132 is fastened to the adjusting frame 133, the adjusting screw 131 is connected to the adjusting nut 132 by a thread, the driving device 11 is connected to the adjusting screw 131 by a transmission device 12, the adjusting screw 131 can rotate around its axial direction, and the adjusting frame 133 is connected to the adjusting screw 131 by the adjusting screw 131. The nut 132 is threadedly engaged and can move along the axial direction of the adjustment screw 131; the combined toggle plate structure 15 includes: a first connecting plate 151 and a second connecting plate 152, the first connecting plate 151 and the second connecting plate 152 are connected by a connecting pin 153, and the side of the first connecting plate 151 away from the second connecting plate 152 is connected to the adjustment frame 133; the guide device 14 includes a guide plate 141, and the spiral adjustment mechanism 13 is installed inside the guide plate 141. A guide hole is provided inside the guide plate 141, and the adjustment screw 131 extends through the guide hole to the outside of the guide plate 141. The combined toggle plate structure 15 is driven by the spiral adjustment mechanism 13 to move along the axial direction of the guide hole.

[0043] The driving device 11 includes: a control device, a reducer 111 and a driving motor 112 . The control device is electrically connected to the driving motor 112 . The output end of the driving motor 112 is connected to the input end of the reducer 111 . The output end of the reducer 111 is connected to the transmission device 12 .

[0044] The transmission device 12 includes: a large sprocket 121, a small sprocket 122, and a chain 123. The small sprocket 122 is connected to the large sprocket 121 through the chain 123. The small sprocket 122 is fastened to the output shaft of the reducer 111 and can rotate around the axial direction of the output shaft of the reducer 111. The large sprocket 121 is fastened to the end of the adjustment screw 131 away from the adjustment nut 132. The large sprocket 121 is driven by the small sprocket 122 to rotate around the axial direction of the adjustment screw 131. The adjustment screw 131 is rotated by the large sprocket 121. The small sprocket 122 is driven by the reducer 111, and the small sprocket 122 drives the chain 123 to achieve stepless speed regulation in both forward and reverse directions.

[0045] The adjustment nut 132 and the adjustment bracket 133 are integrally formed components. The adjustment bracket 133 includes an adjustment bracket cross brace 1331, an adjustment bracket diagonal brace 1332, and an adjustment bracket guide plate 1333. A stop block 134 is positioned in the middle of the adjustment screw 131 and positioned outside the adjustment nut 132. When the stop block 134 abuts the adjustment nut 132, the adjustment screw 131 and the adjustment bracket cross brace 1331 of the adjustment bracket 133 do not contact each other. Rotation of the large sprocket 121 drives the adjustment screw 131 along with it, pushing the adjustment nut 132 and the adjustment bracket 133 forward or backward.

[0046] The guide plate 141 includes an upper guide plate and a lower guide plate arranged in parallel. A guide seat 145 is connected between the upper guide plate and the lower guide plate. A guide hole is opened in the middle of the guide seat 145. Both sides of the adjustment frame 134 slide with the upper guide plate and the lower guide plate respectively.

[0047] A motor base 142 is provided on the guide plate 141 , and the driving device 11 is fastened to the motor base 142 . Reinforcement plates 143 are symmetrically provided on both sides of the guide plate 141 , and lifting ears 144 are also provided on the guide plate.

[0048] The sides of the first connecting plate 151 and the second connecting plate 152 that are close to each other are both arc-shaped. A pin seat with a hole is provided on the second connecting plate 152, and a pin hole is opened on the first connecting plate 151. The first connecting plate 151 and the second connecting plate 152 are fastened together by a connecting pin 153 passing through the pin seat and the pin hole.

[0049] A plurality of connecting blocks 154 are installed on the side of the first connecting plate 151 away from the second connecting plate 152, and the first connecting plate 151 is connected to the adjustment frame 133 through the connecting blocks 154; a plurality of connecting blocks 154 are installed on the side of the second connecting plate 152 away from the first connecting plate 151, and the second connecting plate 152 is connected to the movable jaw 3 and the movable tooth plate 4 through the connecting blocks 154.

[0050] The first connecting plate 151 and the second connecting plate 152 are both provided with a connecting shaft 155 for mounting the connecting block 154 . A copper sleeve 156 is provided on the connecting shaft 155 . The connecting shaft 155 and the copper sleeve 156 cooperate to form a hinge structure.

[0051] The combined toggle plate structure 1 is mainly used to push the movable tooth plate 4 to move up, down, forward and backward in a circular arc, thereby realizing the crushing principle. Its connection method is to connect one end of the connecting block 154 to the movable tooth plate 4, and the other end to the spiral adjustment mechanism 13. One end of the connecting plate is equipped with a sleeve (a copper sleeve 156 is embedded in the sleeve) and is hingedly connected to the connecting shaft 155. Lubrication is ensured by injected lubricating oil.

[0052] The working principle of this application is: the drive motor 112 is controlled by the control device, and the drive motor 112 can achieve stepless speed regulation by the frequency conversion system. The drive motor 112 and the reducer 111 are designed as an integral whole. The drive motor 112 achieves stepless speed regulation under the frequency conversion function to drive the small sprocket 122 to rotate, and the small sprocket 122 drives the large sprocket 121 to rotate together through the chain 123, and then the large sprocket 121 drives the adjusting screw 131 to rotate together, thereby driving the adjusting nut 132, the adjusting frame 133, and the combined toggle plate structure 15 to move back and forth together, thereby realizing the adjustment of the discharge port 8.

[0053] The present invention realizes micro-adjustment by adopting a reasonable adjustment structure, i.e., a small-pitch screw and nut, and realizes high-precision adjustment of the discharge opening 8 through micro-adjustment. The present invention has a simple structure and can be directly installed on the jaw crusher. It is easy to install and maintain, greatly reducing the cost of use. It is easy to operate and can achieve high-precision adjustment, which helps to improve production efficiency.

[0054] Example 2

[0055] Based on Example 1, a jaw crusher provided by the present invention adopts the discharge port adjustment device without hydraulic pressure and pull rod spring of Example 1, and further includes: a fixed tooth plate 2, a movable jaw 3, a movable tooth plate 4, a pulley 6 and an eccentric shaft 7. The two sides of the guide plate 141 are respectively fastened to the frame side plates 5 on both sides of the jaw crusher, and the second connecting plate 152 is connected to the movable jaw 3 and the movable tooth plate 4. The movable tooth plate 4 and the movable jaw 3 are connected together for movement. The movable jaw 3 is driven by the eccentric shaft 7, that is, the eccentric shaft 7 (one point) and the two ends (two points) of the combined toggle plate structure 15 form a triangular hinge. When the eccentric shaft 7 rotates, it drives any point on the movable jaw 3 and the movable tooth plate 4 to make an arc motion trajectory around the other end of the combined toggle plate structure 15 (the size of the arc is related to the eccentricity of the eccentric shaft 7), that is, achieving up, down, forward and backward movement.

[0056] When the jaw crusher is working, the pulley 6 drives the eccentric shaft 7 to rotate, thereby driving the movable jaw 3 and the movable tooth plate 4 (under the thrust of the toggle plate) to make forward, backward, upward and downward curved reciprocating motions. When the movable tooth plate 4 makes the reciprocating curved motion, it forms an opening and closing motion with the fixed tooth plate 2, thereby achieving the result of crushing the crushed material, and the crushed material is continuously discharged from the discharge port 8.

[0057] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0058] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A discharge port adjustment device without hydraulic pressure and pull rod spring, characterized in that: The discharge port adjustment device (1) comprises: a driving device (11), a transmission device (12), a spiral adjustment mechanism (13), a guide device (14) and a combined toggle plate structure (15); The spiral adjustment mechanism (13) comprises: an adjustment screw (131), an adjustment nut (132) and an adjustment frame (133); the adjustment nut (132) is fastened to the adjustment frame (133); the adjustment screw (131) and the adjustment nut (132) are connected by threads; the driving device (11) is connected to the adjustment screw (131) by transmission means (12); the adjustment screw (131) can rotate around its axial direction; and the adjustment frame (133) can move along the axial direction of the adjustment screw (131) through threaded engagement between the adjustment screw (131) and the adjustment nut (132); The combined toggle plate structure (15) comprises: a first connecting plate (151) and a second connecting plate (152), wherein the first connecting plate (151) and the second connecting plate (152) are connected via a connecting pin (153), and a side of the first connecting plate (151) away from the second connecting plate (152) is connected to the adjustment frame (133); The guide device (14) comprises a guide plate (141), the spiral adjustment mechanism (13) is installed inside the guide plate (141), a guide hole is provided inside the guide plate (141), the adjustment screw (131) passes through the guide hole and extends to the outside of the guide plate (141), and the combined toggle plate structure (15) is driven by the spiral adjustment mechanism (13) to move along the axial direction of the guide hole.

2. The discharge port adjustment device without hydraulic pressure and pull rod spring according to claim 1, characterized in that: The driving device (11) comprises: a control device, a reducer (111), and a driving motor (112); the control device is electrically connected to the driving motor (112); the output end of the driving motor (112) is connected to the input end of the reducer (111); and the output end of the reducer (111) is connected to the transmission device (12).

3. The discharge port adjustment device without hydraulic pressure and pull rod spring as claimed in claim 2, characterized in that: The transmission device (12) comprises: a large sprocket (121), a small sprocket (122), and a chain (123). The small sprocket (122) is connected to the large sprocket (121) through the chain (123). The small sprocket (122) is fixedly mounted on the output shaft of the reducer (111). The small sprocket (122) can rotate around the axial direction of the output shaft of the reducer (111). The large sprocket (121) is fixedly mounted on an end of the adjusting screw (131) away from the adjusting nut (132). The large sprocket (121) can rotate around the axial direction of the adjusting screw (131) through the drive of the small sprocket (122). The adjusting screw (131) is driven to rotate by the large sprocket (121).

4. The discharge port adjustment device without hydraulic pressure and pull rod spring according to claim 1, characterized in that: A limiting block (134) is provided in the middle of the adjusting screw (131), and the limiting block (134) is provided on the outside of the adjusting nut (132). When the limiting block (134) is pressed against the adjusting nut (132), the adjusting screw (131) does not contact the adjusting frame cross brace (1331) of the adjusting frame (133).

5. The discharge port adjustment device without hydraulic pressure and pull rod spring as claimed in claim 1, characterized in that: The guide plate (141) includes an upper guide plate and a lower guide plate arranged in parallel, a guide seat (145) is connected between the upper guide plate and the lower guide plate, a guide hole is opened in the middle of the guide seat (145), and both sides of the adjustment frame (134) are respectively slidably matched with the upper guide plate and the lower guide plate.

6. The discharge port adjustment device without hydraulic pressure and pull rod spring as claimed in claim 1, characterized in that: A motor seat (142) is provided on the guide plate (141), and the drive device (11) is fastened to the motor seat (142). Reinforcement plates (143) are symmetrically provided on both sides of the guide plate (141), and a lifting lug (144) is also provided on the guide plate.

7. The discharge port adjustment device without hydraulic pressure and pull rod spring as claimed in claim 1, characterized in that: The sides of the first connecting plate (151) and the second connecting plate (152) that are close to each other are both arc-shaped, a pin seat with a hole is provided on the second connecting plate (152), a pin hole is opened on the first connecting plate (151), and the first connecting plate (151) and the second connecting plate (152) are fastened together by a connecting pin (153) passing through the pin seat and the pin hole.

8. The discharge port adjustment device without hydraulic pressure and pull rod spring as claimed in claim 1, characterized in that: A plurality of connection blocks (154) are installed on a side of the first connection plate (151) away from the second connection plate (152), and the first connection plate (151) is connected to the adjustment frame (133) via the connection blocks (154); A plurality of connection blocks (154) are installed on a side of the second connection plate (152) away from the first connection plate (151), and the second connection plate (152) is connected to the movable jaw (3) and the movable tooth plate (4) via the connection blocks (154).

9. The discharge port adjustment device without hydraulic pressure and pull rod spring as claimed in claim 8, characterized in that: The first connecting plate (151) and the second connecting plate (152) are both provided with a connecting shaft (155) for installing a connecting block (154); a copper sleeve (156) is provided on the connecting shaft (155); and the connecting shaft (155) and the copper sleeve (156) cooperate to form a hinged structure.

10. A jaw crusher, characterized in that: The discharge port adjustment device without hydraulic pressure and pull rod spring as described in any one of claims 1 to 9 also includes: a fixed tooth plate (2), a movable jaw (3), a movable tooth plate (4), a pulley (6) and an eccentric shaft (7), and the two sides of the guide plate (141) are respectively fastened to the frame side plates (5) on both sides of the jaw crusher, and the second connecting plate (152) is connected to the movable jaw (3) and the movable tooth plate (4).

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