A pre-crushing feeding mechanism for a jaw crusher

Abstract

This utility model relates to the field of pre-crushing feeding mechanisms, specifically to a pre-crushing feeding mechanism for a jaw crusher, including a feeding bin and a crushing bin. The inner side of the crushing bin is hinged with triangular pressure plates arranged in a rectangular array. A drive rod is hinged to the upper part of one side of each triangular pressure plate, and a first connecting rod is hinged to the outer side of the other end of the drive rod. This utility model uses the driven frame plate on its outer side to push and pull, causing the folded push rod to drive the separation grate plate to move horizontally reciprocally. During the movement of the separation grate plate, the crushing cone at its top cooperates with the downward pressure of the pressure plates, forming a shearing force field on the stones. This reduces the pressure of the hydraulic cylinder while improving the crushing effect on the stones. The dynamic grate plate design also solves the clogging problem caused by compression. The downward pressure of the pressure plates is driven by the drive rod, with the surrounding pressure plates pressing down synchronously, pushing the stones from the periphery towards the center of the separation grate plate, avoiding the problem of stones flying out of the crushing bin due to instantaneous compression and crushing.

Description

Technical Field

[0001] This utility model relates to the field of pre-crushing feeding mechanisms, specifically to a pre-crushing feeding mechanism for a jaw crusher. Background Technology

[0002] Silica sand is a hard material extracted from ore. Therefore, the mined ore needs to be crushed in the mine to facilitate the extraction of silica sand in subsequent processes. The crushing device used for ore is mostly a double-roll jaw crusher, which is widely used because it can adapt to the harsh mining environment. Jaw crushers are mostly single-feeding-in-the-inlet structures. If the filling speed into the feeding inlet is too fast or too much filling is done at one time, it will cause jamming in the crushing zone between the moving jaw plate and the stationary jaw plate, which will affect the normal operation of the crushing work.

[0003] Currently, when jaw crushers are used, if very large stones are fed directly into the crusher, they may become stuck at the feed inlet for a long time, preventing them from entering the crushing chamber for normal crushing. Alternatively, the impact force upon falling can cause a huge impact on the jaw plates, leading to equipment damage and frequent shutdowns. Most pre-crushing feeding mechanisms in existing technologies generally use direct compression, such as using hydraulic cylinders and pressure plates to apply horizontal or vertical pressure to the stones to cause them to crack. This method is very prone to stress concentration in the stones, causing hydraulic system overload, and most can only crush the stones once. The crushed stones may still be larger than the jaw crusher's feed inlet, resulting in many defects in actual use.

[0004] Therefore, it is necessary to invent a pre-crushing feeding mechanism for a jaw crusher to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a pre-crushing feeding mechanism for a jaw crusher, so as to solve the problem mentioned in the background art that the stone can only be crushed once, and the crushed stone may still be larger than the feeding opening of the jaw crusher.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pre-crushing feeding mechanism for a jaw crusher, comprising a feeding bin and a crushing bin. The inner side of the crushing bin is hinged with triangular pressure plates arranged in a rectangular array. A drive rod is hinged to the upper part of one side of each triangular pressure plate. A first connecting rod is hinged to the outer side of the other end of the drive rod, and a second connecting rod is hinged to the inner side of one end of the drive rod. A synchronization frame is slidably sleeved on the outer wall of the crushing bin, and side frames are fixed to both sides of the synchronization frame. Both sides of the feeding bin are fixedly connected to drive cylinders, and the extension and retraction ends of the drive cylinders are hinged to the inner side of the side frame. Two slide rods are fixedly connected to both sides of the inner cavity of the crushing bin. Separation grate plates are slidably inserted into the surfaces of the two slide rods. A crushing cone is fixedly connected to the top of the separation grate plate. A folded push rod is fixedly connected to one side of the separation grate plate. A driven frame plate is fixedly connected to the other end of the folded push rod. A drive mechanism is provided on the inner side of the driven frame plate. A second crushing mechanism is provided on the inner side of the inner cavity of the feeding bin.

[0007] Preferably, the drive mechanism includes a geared motor and a rotating shaft. The output end of the geared motor is fixedly connected to one end of the rotating shaft. A first cam is fixedly connected to the middle of the rotating shaft, and a second cam is fixedly connected to the other end of the rotating shaft. The surface of the second cam is slidably sleeved with the inner side of the driven frame plate.

[0008] Preferably, the second crushing mechanism includes two limiting rods and a first spring. A crushing cone plate is slidably sleeved on the surface of each of the two limiting rods. A cam pusher plate is fixedly connected to one side of the crushing cone plate, and a triangular cone is fixedly connected to the inner side of the inner cavity of the feeding bin.

[0009] Preferably, a second spring is slidably sleeved on both sides of the two slide rods, and one end of the second spring is fixedly connected to one side of the separation grate.

[0010] Preferably, an upper fixing block arranged in a rectangular array is fixed to the outer wall of the crushing chamber, and the two sides of the upper fixing block are hinged to the inner side of the other end of the first connecting rod.

[0011] Preferably, a lower fixing block arranged in a rectangular array is fixed to the outer wall of the synchronization frame, and the two sides of the lower fixing block are hinged to the inner side of the other end of the second connecting rod.

[0012] Preferably, a receiving hopper is fixedly connected to the top of the crushing chamber, and a feeding trough is fixedly connected to one side of the feeding chamber.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] 1. The hydraulic cylinder drives the synchronous frame to move vertically outside the crushing chamber, causing the synchronous frame to move one end of the second connecting rod upward. The first connecting rod, with the upper fixed block as its axis, rotates outward at its other end. By synchronously pulling the drive rod, the pressure plates around the inside of the crushing chamber are pulled up, and the stones fall from the receiving hopper onto the separation grate inside the crushing chamber. The drive mechanism, through the reduction motor, drives the rotating shaft to rotate the second cam. By pushing and pulling the driven frame plate on its outer side, the folded push rod drives the separation grate to move horizontally back and forth. During the movement of the separation grate, the crushing cone at its top cooperates with the downward pressure of the pressure plate to form a shearing force field on the stones. This reduces the hydraulic cylinder pressure while improving the crushing effect on the stones. The dynamic grate setting can also solve the clogging problem caused by compression. The downward pressure of the pressure plate is pushed by the drive rod, and the pressure plates around the perimeter press down synchronously, pushing the stones from the perimeter towards the center of the separation grate, avoiding the problem of stones flying out of the crushing chamber due to instantaneous compression and crushing.

[0015] 2. The rotating shaft drives the first cam to rotate in the feeding trough. The first cam pushes the crushing cone plate outward through the cam pusher plate. The stone passing through the separation grate plate will be pushed by the crushing cone plate to hit the triangular cone, which will crush the irregular large stones in the primary crushing process into smaller stones. At the same time, the lateral cutting effect of the triangular cone can also prevent long stones from being mixed into the feeding stones. When the reduction motor drives the second cam to rotate and push the separation grate plate in the upper part, the two sides of the separation grate plate are buffered by the second spring. Through the elastic force of the second spring, when the protrusion of the second cam does not exert a pushing force on the driven frame plate, the separation grate plate can automatically reset. When the first cam pushes the crushing cone plate outward, the two sides of the crushing cone plate will squeeze the first springs on both sides. When the protrusion of the first cam does not exert a pushing force on the crushing cone plate, the first spring pushes the crushing cone plate to reset. This reciprocating motion can form an intermittent feeding effect for the jaw crusher. By controlling the rotation speed of the reduction motor, the feeding speed of the feeding mechanism to the jaw crusher can be controlled. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the internal connection structure of the crushing chamber of this utility model;

[0019] Figure 3This is a schematic diagram of the internal connection structure of the crushing chamber of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal connection structure of the feeding bin of this utility model;

[0021] Figure 5 This is a schematic diagram of the linkage connection structure of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Feeding bin; 2. Crushing bin; 3. Triangular pressure plate; 4. Drive rod; 5. First connecting rod; 6. Second connecting rod; 7. Synchronization frame; 8. Side frame; 9. Drive cylinder; 10. Slide rod; 11. Separating grate; 12. Crushing cone; 13. Folded push rod; 14. Driven frame plate; 15. Drive mechanism; 151. Gear motor; 152. Rotating shaft; 153. First cam; 154. Second cam; 16. Second crushing mechanism; 161. Limiting rod; 162. First spring; 163. Crushing cone plate; 164. Cam push plate; 165. Triangular cone; 17. Second spring; 18. Upper fixing block; 19. Lower fixing block; 20. Receiving hopper; 21. Feeding trough. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1-5 The jaw crusher pre-crushing feeding mechanism shown includes a feeding bin 1 and a crushing bin 2. Triangular pressure plates 3 arranged in a rectangular array are hinged to the inner side of the crushing bin 2. A drive rod 4 is hinged to the upper part of one side of each triangular pressure plate 3. A first connecting rod 5 is hinged to the outer side of the other end of the drive rod 4, and a second connecting rod 6 is hinged to the inner side of one end of the drive rod 4. A synchronization frame 7 is slidably sleeved on the outer wall of the crushing bin 2. Side frames 8 are fixed to both sides of the synchronization frame 7. Drive cylinders 9 are fixed to both sides of the feeding bin 1. Furthermore, the extension end of the drive cylinder 9 is hinged to the inner side of the side frame 8. Two slide rods 10 are fixedly connected to both sides of the inner cavity of the crushing chamber 2. Separation grate plates 11 are slidably inserted into the surfaces of the two slide rods 10. A crushing cone 12 is fixedly connected to the top of the separation grate plate 11. A folded push rod 13 is fixedly connected to one side of the separation grate plate 11. A driven frame plate 14 is fixedly connected to the other end of the folded push rod 13. A drive mechanism 15 is provided on the inner side of the driven frame plate 14. A second crushing mechanism 16 is provided on the inner side of the inner cavity of the feeding chamber 1.

[0026] The drive mechanism 15 includes a geared motor 151 and a rotating shaft 152. The output end of the geared motor 151 is fixedly connected to one end of the rotating shaft 152. A first cam 153 is fixedly connected to the middle of the rotating shaft 152. A second cam 154 is fixedly connected to the other end of the rotating shaft 152. The surface of the second cam 154 is slidably sleeved with the inner side of the driven frame plate 14.

[0027] Specifically, in use, the geared motor 151 drives the rotating shaft 152 to rotate. The rotating shaft 152 drives the first cam 153 and the second cam 154 on the upper and lower sides to rotate synchronously. When the first cam 153 rotates once, it can push the crushing cone plate 163 twice through the cam push plate 164. When the second cam 154 rotates, it can push the driven frame plate 14 to move horizontally back and forth. This power is transmitted to the separating grate plate 11 through the folded push rod 13, causing the separating grate plate 11 to vibrate back and forth. In conjunction with the upper pressure plate, it forms a shearing pressure similar to that of a crushing roller on the stones between the pressure plate and the separating grate plate 11, and at the same time has the effect of dynamic anti-clogging of the separating grate plate 11.

[0028] The second crushing mechanism 16 includes two limiting rods 161 and a first spring 162. The surfaces of the two limiting rods 161 are slidably sleeved with crushing cone plates 163. A cam pusher plate 164 is fixedly connected to one side of the crushing cone plate 163, and a triangular cone 165 is fixedly connected to the inner side of the inner cavity of the feeding bin 1.

[0029] Specifically, during use, the first spring 162 provides a reset thrust to the crushing cone plate 163 through its own elasticity, and the first cam 153 drives the crushing cone plate 163 to move intermittently to the side of the triangular cone 165 through the cam push plate 164, so as to perform secondary crushing of the falling stones and intermittently feed the jaw crusher.

[0030] The two slide rods 10 are slidably connected to the two sides of the second spring 17, and one end of the second spring 17 is fixedly connected to one side of the separation grate 11.

[0031] Specifically, during use, the second springs 17 on both sides buffer the movement and breakage of the separation grate 11.

[0032] Upper fixing blocks 18 arranged in a rectangular array are fixed to the outer wall of the crushing chamber 2. The two sides of the upper fixing blocks 18 are hinged to the inner side of the other end of the first connecting rod 5.

[0033] Specifically, in use, the upper end of the first connecting rod 5 is fixedly connected to the outside of the crushing chamber 2, which provides support and fixation for the first connecting rod 5.

[0034] A lower fixing block 19 arranged in a rectangular array is fixed to the outer wall of the synchronization frame 7. The two sides of the lower fixing block 19 are hinged to the inner side of the other end of the second connecting rod 6.

[0035] Specifically, in use, one end of the second link 6 is connected to the surface of the vertically movable synchronization frame 7, so that the second link 6 can dynamically push the drive rod 4 to move horizontally.

[0036] A receiving hopper 20 is fixedly connected to the top of the crushing chamber 2, and a feeding trough 21 is fixedly connected to one side of the feeding chamber 1.

[0037] Specifically, during use, since the top opening of the receiving hopper 20 is larger than the bottom opening, the impact force between the stone and the crushing mechanism inside the crushing chamber 2 can be reduced by the buffer of the inclined surface after contact with the stone. The setting of the feeding trough 21 can be adjusted according to its conveying path, making it convenient for the user to control the feeding area of ​​the feeding mechanism.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pre-crushing feeding mechanism for a jaw crusher, comprising a feeding bin (1) and a crushing bin (2), characterized in that: The inner side of the crushing chamber (2) is hinged with triangular pressure plates (3) arranged in a rectangular array. A drive rod (4) is hinged to the upper part of one side of the triangular pressure plate (3). A first connecting rod (5) is hinged to the outer side of the other end of the drive rod (4). A second connecting rod (6) is hinged to the inner side of one end of the drive rod (4). A synchronization frame (7) is slidably sleeved on the outer wall of the crushing chamber (2). Side frames (8) are fixed to both sides of the synchronization frame (7). Drive cylinders (9) are fixed to both sides of the feeding chamber (1). The telescopic end of the drive cylinder (9) is connected to the side frame (8). 8) is hinged on the inside. Two slide rods (10) are fixed on both sides of the inner cavity of the crushing chamber (2). Separation grate plates (11) are slidably inserted on the surface of the two slide rods (10). A crushing cone (12) is fixed on the top of the separation grate plate (11). A folded push rod (13) is fixed on one side of the separation grate plate (11). A driven frame plate (14) is fixed on the other end of the folded push rod (13). A driving mechanism (15) is provided on the inner side of the driven frame plate (14). A second crushing mechanism (16) is provided on the inner side of the inner cavity of the feeding chamber (1).

2. The pre-crushing feeding mechanism for a jaw crusher according to claim 1, characterized in that: The drive mechanism (15) includes a geared motor (151) and a rotating shaft (152). The output end of the geared motor (151) is fixedly connected to one end of the rotating shaft (152). A first cam (153) is fixedly connected to the middle of the rotating shaft (152), and a second cam (154) is fixedly connected to the other end of the rotating shaft (152). The surface of the second cam (154) is slidably sleeved with the inner side of the driven frame plate (14).

3. The pre-crushing feeding mechanism for a jaw crusher according to claim 1, characterized in that: The second crushing mechanism (16) includes two limiting rods (161) and a first spring (162). The surfaces of the two limiting rods (161) are slidably fitted with crushing cone plates (163). A cam pusher plate (164) is fixedly connected to one side of the crushing cone plate (163). A triangular cone (165) is fixedly connected to the inner side of the inner cavity of the feeding bin (1).

4. The pre-crushing feeding mechanism for a jaw crusher according to claim 1, characterized in that: The two slide rods (10) are slidably sleeved with a second spring (17) on both sides, and one end of the second spring (17) is fixedly connected to one side of the separation grate (11).

5. A pre-crushing feeding mechanism for a jaw crusher according to claim 1, characterized in that: The outer wall of the crushing chamber (2) is fixed with upper fixing blocks (18) arranged in a rectangular array, and the two sides of the upper fixing blocks (18) are hinged to the inner side of the other end of the first connecting rod (5).

6. A pre-crushing feeding mechanism for a jaw crusher according to claim 1, characterized in that: The outer wall of the synchronization frame (7) is fixed with a lower fixing block (19) arranged in a rectangular array. The two sides of the lower fixing block (19) are hinged to the inner side of the other end of the second connecting rod (6).

7. A pre-crushing feeding mechanism for a jaw crusher according to claim 1, characterized in that: The top of the crushing chamber (2) is fixedly connected to a receiving hopper (20), and the side of the feeding chamber (1) is fixedly connected to a feeding trough (21).

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