A building stone breaking device

Abstract

The application belongs to the technical field of stone processing, and particularly relates to a building stone crushing device, which comprises a body, an eccentric jaw plate rotatably connected in the body, a fixed jaw plate arranged on one side of the eccentric jaw plate, a fixed connection between the fixed jaw plate and the inner wall of the body, a fixed frame fixedly connected to the upper surface of the body, a reciprocating screw rod rotatably connected between the fixed frames, a moving block threadedly connected to the reciprocating screw rod, an elastic telescopic rod fixedly connected to one end of the moving block, a moving frame fixedly connected to the telescopic end of the elastic telescopic rod, a push rod slidably connected in the moving frame, and grooves formed in the two sides of the body. When the device is stuck with stones, the end part of the device is actively pushed to make the device tilt and smoothly enter the crushing cavity, so that downtime cleaning is avoided, production continuity is significantly improved, the push rod can also cover the sidewall area of the body, stones accumulated on the sidewall are effectively cleaned, and the material flow in the crushing cavity is ensured to be smooth.

Description

Technical Field

[0001] This invention belongs to the field of stone processing technology, specifically a crushing device for building stone. Background Technology

[0002] Building stone materials include concrete fragments. These fragments can be crushed to produce recycled aggregates, which can replace natural sand and gravel for road bases, brick making, etc., thus solving the problem of building material shortages. Crusher is an indispensable core equipment in stone recycling. Through particle size control, impurity separation, and efficiency improvement, waste stone materials can be efficiently utilized.

[0003] Existing jaw crushers crush building stones by feeding the stones between a fixed jaw plate and an eccentric jaw plate, and the crushing operation is completed by the reciprocating motion of the eccentric jaw plate and the squeezing of the stones between them by the fixed jaw plate.

[0004] Due to inconsistent sizes of building stone, when the length of some building stone does not match the crushing chamber, one end of the stone will stop on one side of the eccentric jaw plate, causing a jamming problem. If it is not cleaned in time, the stone will accumulate at the entrance of the crushing chamber, resulting in a decrease in the crushing efficiency of building stone.

[0005] Therefore, the present invention provides a building stone crushing device. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the problem mentioned in the background technology that one end of the stone material will stop on one side of the eccentric jaw plate, causing material jamming, and if it is not cleaned in time, the stone material will accumulate at the entrance of the crushing chamber, thereby causing a decrease in the crushing efficiency of building stone.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a building stone crushing device, comprising a body, an eccentric jaw plate rotatably connected inside the body, a fixed jaw plate provided on one side of the eccentric jaw plate, the fixed jaw plate being fixedly connected to the inner wall of the body, a fixed frame being fixedly connected to the upper surface of the body, a reciprocating screw rotatably connected between the fixed frames, a moving block being threaded onto the reciprocating screw, an elastic telescopic rod being fixedly connected to one end of the moving block, a moving frame being fixedly connected to the telescopic end of the elastic telescopic rod, a lever being slidably connected inside the moving frame, and grooves being provided on both sides of the body.

[0008] Preferably, a first motor is fixedly connected to one side of the main body, and a rotating shaft is fixedly connected to one end of the eccentric jaw plate. The rotating shaft and the output end of the first motor are connected by a belt drive.

[0009] Preferably, a second motor is fixedly connected to one side of the fixed frame, the output end of the second motor is fixedly connected to one end of the reciprocating lead screw, and a positioning rod is slidably connected inside the moving block, the positioning rod being fixedly connected inside the fixed frame.

[0010] Preferably, a limiting plate is fixedly connected to one side of the fixing frame, and a sliding groove is provided inside the limiting plate. The sliding groove includes a toggle section, a rising section is provided on one side of the toggle section, and a falling section is provided on one side of the rising section. The groove depth of the toggle section is less than the groove depth of the rising section. A protrusion is fixedly connected inside the rising end, and an electromagnet is fixedly connected to one end of the rising section.

[0011] Preferably, a magnetic rod is slidably connected to one end of the movable frame, and one end of the magnetic rod is slidably connected to the inner wall of the slide groove. The magnetic rod and the movable frame are fixedly connected by a second spring, and the magnetic rod and the electromagnet attracted each other by their magnetism after being energized.

[0012] Preferably, a baffle is slidably connected inside the groove, the upper surface of the baffle is inclined, one end of the lever is tapered, and one side of the baffle and the inner wall of the groove are fixedly connected by a first spring.

[0013] Preferably, one end of the magnetic rod is fixedly connected to a connecting plate, a support frame is slidably connected inside the connecting plate, a first docking rod is slidably connected inside the support frame, a second docking rod is provided on one side of the first docking rod, the second docking rod is slidably connected to the support frame, a turntable is rotatably connected inside the support frame, a milling groove is provided inside the turntable, and one end of both the first and second docking rods is slidably connected to the inner wall of the milling groove.

[0014] Preferably, a first rack is slidably connected to the upper surface of the movable frame, a second rack is provided on one side of the first rack, the second rack is slidably connected to the upper surface of the movable frame, a rotating plate is rotatably connected inside the movable block, and a first gear is fixedly connected to the telescopic rotating shaft end of the rotating plate, the first gear meshing with the first rack and the second rack respectively.

[0015] Preferably, a second gear is rotatably connected to the upper surface of the support frame, and ratchet teeth are provided on the inner wall of the second gear. A pawl is rotatably connected to the rotating shaft end of the turntable through a torsion spring. The pawl and ratchet teeth mesh in one direction. A movable rack is fixedly connected to the upper surface of the connecting plate, and the movable rack meshes with the second gear.

[0016] Preferably, the connecting plate has a connecting groove inside, and the upper surface of the support frame has a protrusion fixedly connected to it, with the protrusion and the connecting groove being slidably connected.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The building stone crushing device of the present invention is equipped with a lever and a chute. When a small, long building stone slides between the fixed jaw plate and the eccentric jaw plate and is difficult to fall, the moving block drives the lever to slide. The lever moves one end of the long stone, causing it to tilt and slide between the fixed jaw plate and the eccentric jaw plate for crushing. When the long stone is on both sides of the main body, the lever slides from the descending section of the chute to the groove. The lever then slides from the groove, moving the stone that is stuck on both sides of the main body. The lever, through the chute design, actively moves the end of the stone when it is stuck, causing it to tilt and smoothly enter the crushing chamber, avoiding downtime for cleaning and significantly improving production continuity. At the same time, the lever can also cover the area of ​​both sides of the main body, effectively cleaning the stone accumulated on the side walls and ensuring smooth material flow in the crushing chamber.

[0019] 2. The building stone crushing device of the present invention is equipped with an ascending section and a protrusion. When the stone is piled up against the ascending section, and the stone surface has openings or is in a depression corresponding to the position of the lever, the lever slides from the deflecting section to the ascending section. The magnetic rod slides in the ascending section of the slide groove and contacts the protrusion. The magnetic rod is squeezed by the protrusion and pushes the first rack to slide. The first rack meshes with the first gear. The first gear drives the rotating plate to rotate. The rotating plate can drive the lever to rotate at a certain angle, which can tilt the stone in the center so that the stone falls into the crushing chamber for crushing and recycling. This device can drive the lever to rotate in the center section to deflect irregular long stones, avoiding the problem that when facing long stones with openings, depressions or irregular shapes, the deflection will fail due to insufficient contact surface and the stone will still be stuck at the entrance of the crushing chamber.

[0020] 3. The building stone crushing device of the present invention is equipped with a turntable. By driving the turntable to rotate, the turntable drives the milling groove to rotate. The milling groove can drive the first and second connecting rods to move, so that the first or second rack and the connecting plate can be connected. This can automatically change the rotation direction of the rotating plate and the lever. No external power or manual intervention is required. The direction switching can be completed by mechanical structure alone. This can move various irregular stones, avoid the stones from getting stuck at the entrance of the crushing chamber, and improve the crushing efficiency of the stones. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partial structural schematic diagram of the main body of the present invention;

[0024] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the baffle of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the movable block of the present invention;

[0027] Figure 6 This is a cross-sectional view of the moving block of the present invention;

[0028] Figure 7 This is a schematic diagram of the connecting plate of the present invention;

[0029] Figure 8 This is an exploded view of the connecting plate of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the second gear of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of the limiting plate of the present invention;

[0032] In the diagram: 1. Body; 11. First motor; 12. Rotating shaft; 13. Eccentric jaw plate; 14. Fixed jaw plate; 15. Groove; 151. Baffle; 152. First spring; 2. Fixing frame; 21. Second motor; 22. Reciprocating lead screw; 23. Positioning rod; 3. Moving block; 31. Lever; 32. Rotating plate; 321. First gear; 33. Moving frame; 331. Elastic telescopic rod; 34. Magnetic rod; 35. Second spring; 36. Connecting plate; 3 61. Moving rack; 362. Connecting groove; 363. Support frame; 364. Protrusion; 365. First docking rod; 366. Second docking rod; 367. Turntable; 368. Second gear; 3681. Racket; 3682. Pawl; 369. Milled groove; 37. First rack; 38. Second rack; 4. Limiting plate; 41. Slide groove; 411. Actuating section; 412. Rising section; 413. Protrusion; 414. Falling section; 42. Electromagnet. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] Example 1: As Figures 1 to 10As shown in the figure, a building stone crushing device according to an embodiment of the present invention includes a body 1. An eccentric jaw plate 13 is rotatably connected inside the body 1. A fixed jaw plate 14 is provided on one side of the eccentric jaw plate 13. The fixed jaw plate 14 is fixedly connected to the inner wall of the body 1. A fixed frame 2 is fixedly connected to the upper surface of the body 1. A reciprocating screw 22 is rotatably connected between the fixed frames 2. A moving block 3 is threaded on the reciprocating screw 22. An elastic telescopic rod 331 is fixedly connected to one end of the moving block 3. A moving frame 33 is fixedly connected to the telescopic end of the elastic telescopic rod 331. A lever 31 is slidably connected inside the moving frame 33. Grooves 15 are provided on both sides of the body 1.

[0035] like Figure 10 As shown, a limiting plate 4 is fixedly connected to one side of the fixing frame 2. A sliding groove 41 is provided inside the limiting plate 4. The sliding groove 41 includes a toggle section 411. A rising section 412 is provided on one side of the toggle section 411. A falling section 414 is provided on one side of the rising section 412. The groove depth of the toggle section 411 is less than the groove depth of the rising section 412. A protrusion 413 is fixedly connected inside the rising end. An electromagnet 42 is fixedly connected to one end of the rising section 412.

[0036] like Figure 5 and Figure 6 As shown, a magnetic rod 34 is slidably connected to one end of the movable frame 33. One end of the magnetic rod 34 is slidably connected to the inner wall of the slide groove 41. The magnetic rod 34 and the movable frame 33 are fixedly connected by a second spring 35. The magnetic rod 34 and the electromagnet 42 are attracted to each other by their magnetism after being energized.

[0037] Specifically, when existing jaw crushers crush building stones, the stone is fed between the fixed jaw plate 14 and the eccentric jaw plate 13, and the crushing operation is completed by the reciprocating motion of the eccentric jaw plate 13 and the squeezing of the stone between them by the fixed jaw plate 14.

[0038] Due to the inconsistent size of the building stone, when the length of some building stone does not match the crushing chamber, one end of the stone will stop on one side of the eccentric jaw plate 13, causing a jamming problem. If it is not cleaned in time, the stone will accumulate at the entrance of the crushing chamber, resulting in a decrease in the crushing efficiency of the building stone.

[0039] To solve the above problems, the device is used as follows: First, the building stone is put into the body 1, and the building stone is crushed by driving the eccentric jaw plate 13 to move and the fixed jaw plate 14 to cooperate in squeezing.

[0040] When one end of a stone is stuck at the eccentric jaw plate 13, causing a jam, the lever 31 is initially in the groove 15, which can drive the moving block 3 to slide towards the side of the second motor 21. The moving block 3 drives the rotating plate 32 and the moving frame 33 to slide synchronously. The rotating plate 32 drives the lever 31 to slide synchronously. The moving frame 33 drives the magnetic rod 34 to slide in the slide groove 41 inside the limiting plate 4. At this time, the magnetic rod 34 slides in the left-side actuating section 411 of the slide groove 41. The lever 31 slides and contacts one end of the stone. The lever 31 pushes the stone to tilt, so that the stone can tilt and slide into the crushing chamber, thus completing the unblocking operation of the stone on the left side.

[0041] Subsequently, the magnetic rod 34 drives the lever 31 to move to the rising section 412. The electromagnet 42 attracts the magnetic rod 34, causing it to move upward. The magnetic rod 34 then slides from the rising section 412 to the falling section 414. The moving frame 33 drives the lever 31 to slide upward. When the magnetic rod 34 slides to the interface between the falling section 414 and the moving section 411, the elastic telescopic rod 331 drives the moving frame 33 to descend. The moving frame 33 drives the magnetic rod 34 to descend, causing the moving frame 33 to drive the lever 31 to descend. At this time, the lever 31 is in the groove 15 on the right side of the body 1. When one side of the stone adheres to the side wall of the body 1, the lever 31 slides out of the groove 15, which can push the stone to rotate and tilt, and fall into the crushing chamber. Then the magnetic rod 34 continues to slide in the right moving section 411, and clears the stone accumulated on the right side.

[0042] When the stone gets stuck between the eccentric jaw plate 13 and the fixed jaw plate 14, the device can drive the lever 31 to reciprocate between the main body 1. The lever 31 moves the end of the stone, causing the stone to tilt and fall smoothly into the crushing chamber for crushing, without the need for manual operation.

[0043] Meanwhile, when the stone material is stuck on both sides of the main body 1, the lever 31 can first rise to avoid contact with the stone material on both sides of the main body 1. When the lever 31 moves to the groove 15, it will then fall into the groove 15. At this time, the lever 31 is in the side wall of the main body 1. When the lever 31 continues to move back and forth, it can tilt the stone material stuck on both sides of the main body 1, so that the stone material accumulated on the side wall can be effectively cleared, ensuring smooth material flow in the crushing chamber.

[0044] like Figure 1 As shown, a first motor 11 is fixedly connected to one side of the body 1, and a rotating shaft 12 is fixedly connected to one end of the eccentric jaw plate 13. The rotating shaft 12 and the output end of the first motor 11 are connected by belt drive.

[0045] Specifically, when it is necessary to drive the eccentric jaw plate 13 to move in conjunction with the fixed jaw plate 14 to crush the stone inside the crushing chamber, the first motor 11 can be turned on. The first motor 11 drives the rotating shaft 12 to rotate synchronously through belt transmission, so that the rotating shaft 12 drives the eccentric jaw plate 13 to move. The eccentric jaw plate 13 pushes the stone and the fixed jaw plate 14 to contact and squeeze each other, thus crushing the stone.

[0046] like Figure 2 As shown, a second motor 21 is fixedly connected to one side of the fixed frame 2. The output end of the second motor 21 is fixedly connected to one end of the reciprocating lead screw 22. A positioning rod 23 is slidably connected inside the moving block 3. The positioning rod 23 is fixedly connected inside the fixed frame 2.

[0047] Specifically, when it is necessary to drive the reciprocating screw 22 to rotate, the second motor 21 can be turned on. The second motor 21 drives the reciprocating screw 22 to rotate, and the reciprocating screw 22 can drive the moving block 3 to slide back and forth on the surface of the positioning rod 23. The moving block 3 can drive the lever 31 to push the stone material that is stopped at the entrance of the crushing chamber and fall into the crushing chamber.

[0048] like Figure 3 As shown, a baffle 151 is slidably connected inside the groove 15. The upper surface of the baffle 151 is inclined. One end of the lever 31 is tapered. One side of the baffle 151 and the inner wall of the groove 15 are fixedly connected by a first spring 152.

[0049] Specifically, when the above device is in use, since the groove 15 is exposed to the outside, when the stone is dropped, some of the stone will fall into the groove 15, causing the groove 15 to become blocked. This makes it difficult for the lever 31 to move into the groove 15 and to move the stone on both sides.

[0050] To solve the above problems, under normal conditions, the two baffles 151 close the groove 15, which can prevent stones from falling into the groove 15. When the lever 31 slides down, one end of the lever 31 is tapered. The lever 31 can press the upper surface of the baffle 151, so that the two baffles 151 slide inside the groove 15 and press the first spring 152, so that the groove 15 opens. The lever 31 can then be stopped inside the groove 15, which facilitates the effective cleaning of stones accumulated on the side wall.

[0051] Example 2: Figures 8 to 10As shown in the comparative embodiment one, another embodiment of the present invention is as follows: one end of the magnetic rod 34 is fixedly connected to a connecting plate 36, a support frame 363 is slidably connected inside the connecting plate 36, a first docking rod 365 is slidably connected inside the support frame 363, a second docking rod 366 is provided on one side of the first docking rod 365, the second docking rod 366 is slidably connected to the support frame 363, a turntable 367 is rotatably connected inside the support frame 363, a milling groove 369 is provided inside the turntable 367, and one end of both the first docking rod 365 and the second docking rod 366 is slidably connected to the inner wall of the milling groove 369.

[0052] like Figure 7 and Figure 8 As shown, a first rack 37 is slidably connected to the upper surface of the movable frame 33, and a second rack 38 is provided on one side of the first rack 37. The second rack 38 is slidably connected to the upper surface of the movable frame 33. A rotating plate 32 is rotatably connected inside the movable block 3. A first gear 321 is fixedly connected to the telescopic rotating shaft 12 end of the rotating plate 32. The first gear 321 meshes with the first rack 37 and the second rack 38 respectively.

[0053] like Figure 7 and Figure 9 As shown, a second gear 368 is rotatably connected to the upper surface of the support frame 363. A ratchet 3681 is provided on the inner wall of the second gear 368. A pawl 3682 is rotatably connected to the rotating shaft 12 end of the turntable 367 through a torsion spring. The pawl 3682 and the ratchet 3681 mesh in one direction. A movable rack 361 is fixedly connected to the upper surface of the connecting plate 36. The movable rack 361 and the second gear 368 mesh with each other.

[0054] like Figure 10 The connecting plate 36 has a connecting groove 362 inside, and the upper surface of the support frame 363 is fixedly connected to a protrusion 364, which is slidably connected to the inside of the connecting groove 362.

[0055] Specifically, when the stone is in the central section of the chute 41 and the stone is irregular in shape, such as having a groove 15 in the middle of the stone, when the lever 31 moves to the central section, the lever 31 enters the groove 15 of the stone, resulting in insufficient contact surface, making it difficult to move the stone to tilt and fall, thus causing the stone to get stuck at the inlet of the crushing chamber.

[0056] To avoid the aforementioned technical problems, this device operates as follows: Under normal conditions, the second docking rod 366 and the second rack 38 are internally connected, the first docking rod 365 is located outside the first rack 37, and the moving block 3 slides towards one side of the second motor 21. At this time, when the electromagnet 42 is energized to magnetically attract the magnetic rod 34, the magnetic rod 34 slides in the rising section 412 of the slide groove 41. The magnetic rod 34 contacts the protrusion 413 in the rising section 412, causing the magnetic rod 34 to slide towards one side of the first gear 321 and compress the second spring 35. Subsequently, the magnetic rod 34 drives the connecting plate 36 at one end to slide synchronously. The connecting plate 36 drives the connecting groove 362 and the moving rack 361 to move synchronously. The moving rack 361 and the second gear 368 mesh with each other, causing the second gear 368 to drive the turntable 367 to rotate through the ratchet 3681 and the pawl 3682. The turntable 367 drives the milling groove 369 to rotate, causing the second docking rod 366 to move upward and disengage from the second rack 368. The first connecting rod 365 slides downward in the support frame 363 and connects with the inside of the first rack 37. Then the connecting plate 36 continues to move, the connecting groove 362 pushes the protrusion 364 to move, the protrusion 364 drives the support frame 363 to slide synchronously, the support frame 363 drives the first rack 37 to slide synchronously, the first rack 37 and the first gear 321 mesh with each other, so that the telescopic rotating shaft 12 inside the rotating plate 32 rotates, thereby driving the rotating plate 32 to rotate, the rotating plate 32 drives the lever 31 to rotate, the lever 31 rotates inside the moving frame 33, the lever 31 rotates in the direction of the second motor 21, which can increase the contact area with the stone and push the stone to move into an inclined position. When the connecting plate 36 is reset, the connecting groove 362 slides at the protrusion 364. At this time, the moving rack 361 and the second gear 368 mesh, but the ratchet 3681 inside the second gear 368 does not mesh with the pawl 3682, so the turntable 367 will not rotate.

[0057] When the lever 31 moves away from the second motor 21, the magnetic rod 34 moves to the rising section 412. The magnetic rod 34 is squeezed by the protrusion 413, causing the magnetic rod 34 to move. The magnetic rod 34 then drives the connecting plate 36 to slide. The connecting plate 36 drives the moving rack 361 and the second gear 368 to mesh, causing the turntable 367 to drive the milling groove 369 to rotate again. The milling groove 369 drives the first docking rod 365 to rise and drives the second docking rod 366 to fall and connect with the second rack 38. At this time, the support frame 363 pushes the second rack 38 and the first gear 321 to mesh, which can drive the lever 31 to rotate away from the motor. This can automatically change the direction of rotation to increase the contact area with the stone.

[0058] This device can rotate the lever 31 at its center section to move irregularly shaped long stones. This avoids the problem of insufficient contact surface leading to failure when dealing with long stones with surface openings, depressions, or irregular shapes, resulting in the stones remaining stuck at the inlet of the crushing chamber. At the same time, it can automatically change the rotation direction of the lever 31 driven by the rotating plate 32. No external power or manual intervention is required. The direction can be switched solely through the mechanical structure, which can move various irregular stones, prevent stones from getting stuck at the inlet of the crushing chamber, and improve the crushing efficiency of the stones.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stone crushing device for building materials, characterized in that: The body (1) includes an eccentric jaw plate (13) rotatably connected inside the body (1). A fixed jaw plate (14) is provided on one side of the eccentric jaw plate (13). The fixed jaw plate (14) is fixedly connected to the inner wall of the body (1). A fixed frame (2) is fixedly connected to the upper surface of the body (1). A reciprocating screw (22) is rotatably connected between the fixed frames (2). A moving block (3) is threaded on the reciprocating screw (22). An elastic telescopic rod (331) is fixedly connected to one end of the moving block (3). A moving frame (33) is fixedly connected to the telescopic end of the elastic telescopic rod (331). A lever (31) is slidably connected inside the moving frame (33). Grooves (15) are provided on both sides of the body (1). A first motor (11) is fixedly connected to one side of the main body (1), and a rotating shaft (12) is fixedly connected to one end of the eccentric jaw plate (13). The rotating shaft (12) and the output end of the first motor (11) are connected by belt drive. A second motor (21) is fixedly connected to one side of the fixed frame (2). The output end of the second motor (21) is fixedly connected to one end of the reciprocating screw (22). A positioning rod (23) is slidably connected inside the moving block (3). The positioning rod (23) is fixedly connected inside the fixed frame (2). A limiting plate (4) is fixedly connected to one side of the fixed frame (2). The limiting plate (4) has a sliding groove (41) inside. The sliding groove (41) includes a toggle section (411). A rising section (412) is provided on one side of the toggle section (411). A falling section (414) is provided on one side of the rising section (412). The groove depth of the toggle section (411) is less than the groove depth of the rising section (412). A protrusion (413) is fixedly connected inside the rising section. An electromagnet (42) is fixedly connected to one end of the rising section (412). A magnetic rod (34) is slidably connected to one end of the movable frame (33). One end of the magnetic rod (34) is slidably connected to the inner wall of the slide groove (41). The magnetic rod (34) and the movable frame (33) are fixedly connected by a second spring (35). The magnetic rod (34) and the electromagnet (42) after being energized attract each other with their magnetism. A baffle (151) is slidably connected inside the groove (15). The upper surface of the baffle (151) is inclined. One end of the lever (31) is tapered. One side of the baffle (151) and the inner wall of the groove (15) are fixedly connected by a first spring (152). One end of the magnetic rod (34) is fixedly connected to a connecting plate (36). A support frame (363) is slidably connected inside the connecting plate (36). A first docking rod (365) is slidably connected inside the support frame (363). A second docking rod (366) is provided on one side of the first docking rod (365). The second docking rod (366) is slidably connected inside the support frame (363). A turntable (367) is rotatably connected inside the support frame (363). A milling groove (369) is provided inside the turntable (367). One end of the first docking rod (365) and the second docking rod (366) are slidably connected to the inner wall of the milling groove (369).

2. The building stone crushing device according to claim 1, characterized in that: The upper surface of the movable frame (33) is slidably connected to a first rack (37), and a second rack (38) is provided on one side of the first rack (37). The second rack (38) and the upper surface of the movable frame (33) are slidably connected. The interior of the movable block (3) is rotatably connected to a rotating plate (32). The end of the telescopic rotating shaft (12) of the rotating plate (32) is fixedly connected to a first gear (321). The first gear (321) meshes with the first rack (37) and the second rack (38) respectively.

3. The building stone crushing device according to claim 2, characterized in that: The upper surface of the support frame (363) is rotatably connected to a second gear (368), and the inner wall of the second gear (368) is provided with ratchet teeth (3681). The rotating shaft (12) end of the turntable (367) is rotatably connected to a pawl (3682) through a torsion spring. The pawl (3682) and the ratchet teeth (3681) mesh in one direction. The upper surface of the connecting plate (36) is fixedly connected to a movable rack (361), and the movable rack (361) meshes with the second gear (368).

4. The building stone crushing device according to claim 3, characterized in that: The connecting plate (36) has a connecting groove (362) inside, and the upper surface of the support frame (363) is fixedly connected to a protrusion (364), and the protrusion (364) and the connecting groove (362) are slidably connected inside.

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