A crushing device for water conservancy projects

Abstract

The invention relates to the technical field of crushing devices, and specifically discloses a crushing device for water conservancy projects, comprising: a shell of a hammer crusher, a hammer head, and grate plates uniformly distributed at the bottom of the hammer crusher, the grate plates being rotatably arranged on the shell in a resettable manner, when a stone is stuck between two adjacent grate plates, the hammer head contacts the stone and pushes the grate plates to change from an inclined state to a vertical state in a clockwise manner, the gap between the two adjacent grate plates in the vertical state is larger than the gap between the two adjacent grate plates in the inclined state, a push plate is arranged at the bottom between the two adjacent grate plates, an elastic connecting piece which is retractable along the radial direction of the shell is connected between the push plate and the grate plate, and a driving assembly is arranged between the rotating shaft of the grate plate and the elastic connecting piece; by arranging a rotatable grate plate, the grate plate is prevented from being worn out quickly when the stone is crushed, the pushing piece causes the elastic connecting piece to contract and thereby causes the push plate to move between the two grate plates and thereby lifts the stone stuck between the grate plates upward.

Description

Technical Field

[0001] The invention relates to the technical field of crushing devices, and in particular to a crushing device for water conservancy projects. Background Art

[0002] In water conservancy projects, such as dam construction, river regulation, embankment reinforcement, etc., a large amount of sand and gravel is needed as building materials. Hammer crushers are used to crush hard materials such as rocks and limestone to produce sand and gravel that meet specifications for concrete preparation and foundation filling.

[0003] The Chinese patent document with the authorization announcement number CN115501946B discloses a wet-process hammer crusher, including a rotating crushing hammer and a grinding plate at a certain distance from the crushing hammer. After the stone enters the inner cavity of the hammer crusher, the rotating crushing hammer will crush the stone. The crushed stone hits the impact plate in the inner cavity of the hammer crusher. Under the recoil of the impact plate, it is further crushed. At the same time, the stones also collide with each other, breaking the stone entering the inner cavity of the hammer crusher into small pieces. Since there is a certain distance between the grinding plate and the crushing hammer, the stone that is crushed into small pieces will enter the gap between the grinding plate and the crushing hammer when it moves in the inner cavity of the hammer crusher after being crushed to a certain extent. When the crushing hammer rotates to the position of the grinding plate, it drives the stone in the gap to be ground on the grinding plate, and the sand and gravel grind each other.

[0004] In the above technical solution, the stone is crushed and ground by the grinding plate and the breaker hammer, and finally the stone falls from the through hole at the bottom of the grinding plate after being crushed and ground. However, in actual use, when the stone enters between the grinding plate and the breaker hammer, the squeezing force between the breaker hammer and the grinding plate may directly crush the stone, and thus it is difficult to achieve continuous grinding. Even if the gap between the breaker hammer and the grinding plate is just suitable for grinding the stone, when the stone is ground, the stone may still block the through hole at the bottom of the grinding plate after falling. Summary of the invention

[0005] The invention provides a crushing device for water conservancy engineering, aiming to solve the problem that a hammer crusher in the related art is easily blocked when crushing stones.

[0006] A crushing device for water conservancy engineering, comprising: a housing of a hammer crusher, a hammer head, and grate plates uniformly distributed at the bottom of the hammer crusher, wherein the grate plates are rotatably arranged on the housing in a resetting manner, and when a stone is stuck between two adjacent grate plates, the hammer head contacts the stone and pushes the grate plates clockwise from an inclined state to a vertical state, and the gap between the two adjacent grate plates in the vertical state is larger than the gap between the two adjacent grate plates in the inclined state;

[0007] A push plate is provided at the bottom between two adjacent grate plates, and an elastic connector that can be extended and retracted along the radial direction of the shell is connected between the push plate and the grate plate. A driving assembly is provided between the rotating shaft of the grate plate and the elastic connector to move the elastic connector in the front-rear direction when the grate plate rotates. A pushing member is installed on the rotating shaft of the hammer head. When the elastic connector is away from the shell, the pushing member rotates with the hammer head and pushes the movable end of the elastic connector to extend and retract, thereby allowing the push plate to enter between the two adjacent grate plates.

[0008] The effect is as follows: by setting a rotatable grate plate, the grate plate is prevented from wearing out quickly when crushing stones; a push plate is set at the bottom of two adjacent grate plates, and when a stone is stuck between the grate plates, the grate plates are rotated to a vertical state when the hammer head rotates, and when the grate plates rotate, the elastic connecting member connected to the push plate is moved away from the shell body, and when the push member rotates with the hammer head, the push member causes the elastic connecting member to contract and thus the push plate moves between the two grate plates and then the stone stuck between the grate plates is pushed upward.

[0009] Preferably, a torsion spring is provided between the rotating shaft of the grate plate and the shell, one end of the torsion spring is connected to the rotating shaft, and the other end is connected to the shell; by providing the torsion spring, the grate plate can be reset to the inclined state after being pushed from the inclined state to the vertical state.

[0010] Preferably, each grate plate is provided with a stopper on both sides. When the grate plate is in an inclined state, it contacts the stopper on the left side, and when the grate plate is in a vertical state, it contacts the stopper on the right side. By providing the stoppers on both sides of the grate plate, the grate plate is stopped by the stoppers when it rotates to the extreme positions in the left and right directions, thereby limiting the rotation of the grate plate.

[0011] Preferably, the pushing member includes a connecting rod fixedly arranged on the rotating shaft of the hammer head, and an arc block is fixedly arranged on one side of the connecting rod close to the shell; when the hammer head rotates, the arc block rotates synchronously, and the rotation of the arc block drives the elastic connecting member to contract, thereby driving the push plate to push out the stone stuck between two adjacent grate plates, and when the arc block loses contact with the elastic connecting member, the push plate is reset under the action of the elastic connecting member.

[0012] Preferably, the elastic connecting member includes a fixed part and a movable part, a compression spring is connected between the fixed part and the movable part, the fixed part is slidably arranged on the rotating shaft of the grate plate along the front-rear direction, a sliding sleeve is provided on the fixed part, the movable part is slidably arranged in the sliding sleeve, one end of the compression spring is connected to the sliding sleeve, and the other end is connected to the movable part; when the arc block rotates, the movable part is pushed to move and thus the compression spring is compressed, and the movable part drives the push plate to move to push the stone out, and when the pushing member is separated from the arc plate, the movable part and the push plate are reset under the action of the compression spring.

[0013] Preferably, square rods are fixedly provided on both the front and rear sides of the push plate, a connecting sleeve is fixedly provided on the bottom of the movable part, a square hole is opened in the connecting sleeve, and the square rod cooperates with the square hole; by setting the square rod and the square hole, the push plate can maintain moving in a fixed direction.

[0014] Preferably, a plurality of crushing teeth are arranged on the top surface of the push plate along the front-to-back direction; by providing the crushing teeth, the push plate can crush the stone when it moves upward, and if the hardness of the stone is relatively large, the crushing teeth will push the stone upward.

[0015] Preferably, the driving assembly includes an arc-shaped groove on the outer wall of the rotating shaft of the grate plate, a sleeve is provided on the fixed part and is sleeved with the rotating shaft of the grate plate, a protrusion is provided on the inner wall of the sleeve, the protrusion is slidably arranged in the arc-shaped groove, and a guide member for moving the fixed part in the front and rear directions is also installed on the fixed part; when the grate plate rotates, the protrusion slides in the arc-shaped groove and thus moves the elastic connecting member away from the shell, and when the arc block rotates, it can contact the elastic connecting member and compress the elastic connecting member.

[0016] Preferably, the guide member is a telescopic rod that can be extended in the front-to-back direction, one end of the telescopic rod is connected to the shell, and the other end is connected to the fixed part; by providing the guide member, the elastic connecting member can slide in the front-to-back direction and limit the rotation of the fixed part.

[0017] Preferably, when the grate plate is in a vertical state, the grate plate is parallel to the radial direction of the shell, and when the grate plate is in an inclined state, it is tilted and deflected 45-60 degrees to the left from the vertical state; when the grate plate is tilted and deflected, the distance between the grate plate and the hammer head is larger, and when a stone falls, the stone is crushed by the hammer head. When the stone is stuck between the two grate plates, the hammer head and the grate plate work together to crush the stone under the action of shear force to reduce the wear of the grate plate.

[0018] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0019] 1. When crushing stones, throw the stones into the entrance of the hammer crusher, and the stones falling on the bottom of the shell are crushed again by the hammer. When the grate plate is set at an angle, the grate plate is in an inclined state, the gap between two adjacent grate plates is small, and the distance between the grate plate and the hammer is large. The stones are basically crushed by the hammer, which avoids the grate plate from wearing out quickly, and the grate plate has a better screening effect on the stones.

[0020] 2. When a stone is stuck between two grate plates, the hammer rotates and contacts the stone, so that the stone is broken under the shear force of the grate plates. At this time, the gap between adjacent grate plates is large to facilitate the falling of the broken stone; when the broken stone is stuck between the two grate plates, the stone is pushed upward by a push plate arranged at the bottom of the grate plate to break the stone. When the grate plate rotates to a vertical state, the elastic connecting member connected to the push plate is moved away from the shell through the driving assembly. The push member compresses the elastic connecting member when rotating with the hammer head, thereby moving the push plate toward between the two adjacent grate plates. The stone stuck between the grate plates is pushed upward by the push plate, so that the stone is broken by the hammer head, and the grate plate resumes its inclined state under the action of the torsion spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the grate plate of the present invention in a vertical state.

[0024] Figure 4 It is a structural schematic diagram of the grate plate of the present invention in an inclined state.

[0025] Figure 5 It is a structural schematic diagram of the push plate and the grate plate of the present invention.

[0026] Figure 6 It is a schematic diagram of the structure of the driving assembly of the present invention.

[0027] Figure 7 It is a schematic structural diagram of the fixing part of the present invention.

[0028] Reference numerals:

[0029] 1. Shell; 2. Hammer head; 3. Grate plate; 31. Torsion spring; 32. Stop block; 4. Push plate; 41. Crushing tooth; 5. Elastic connecting member; 51. Fixed part; 52. Movable part; 53. Compression spring; 6. Driving assembly; 61. Protrusion; 62. Sleeve; 63. Arc groove; 64. Guide member; 7. Push member; 71. Connecting rod; 72. Arc block. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] like Figure 1-Figure 7As shown, a crushing device for water conservancy projects includes a housing 1 of a hammer crusher, a hammer head 2, and a grate plate 3 rotatably arranged at the bottom of the housing 1, and a push plate 4 is arranged at the bottom of two adjacent grate plates 3; in an initial state, the grate plates 3 are inclined, and stones are crushed by the hammer heads 2 when passing through the grate plates 3, and the crushed stones fall from the gaps between the grate plates 3. When the stones pass through the grate plates 3, they are stuck between the two grate plates 3, and the hammer heads 2 rotate to crush the stones while pushing the grate plates 3 from an inclined state to a vertical state, and the hammer heads 2 shear and crush the stones when they come into contact with the stones.

[0032] In a specific embodiment of the present invention, when the grate plate 3 is in a vertical state, the grate plate 3 is parallel to the radial direction of the shell 1. When the grate plate 3 is in an inclined state, it is tilted 45-60 degrees to the left from the vertical state. When the grate plate 3 is in an inclined state, the gap between two adjacent grate plates 3 is small. When the hammer head 2 passes over the grate plate 3, the gap between the hammer head 2 and the grate plate 3 is large, and the stone is not easy to get stuck between the grate plates 3. The stone falls from the gap between the grate plates 3 after being crushed by the hammer head 2. When the stone is stuck between two adjacent grate plates 3, the stone is subjected to the shear force of the grate plate 3 and the hammer head 2 to crush the stone. At this time, under the thrust of the hammer head 2, the grate plate 3 rotates to a vertical state. At this time, the gap between the grate plates 3 is large so that the crushed stone falls from the gap between the grate plates 3.

[0033] Each grate plate 3 is provided with a stopper 32 on both sides. When the grate plate 3 is in an inclined state, it contacts the stopper 32 on the left side. When the grate plate 3 is in a vertical state, it contacts the stopper 32 on the right side. By setting the stopper 32, the grate plate 3 can be rotated at a fixed angle. When the grate plate 3 is in a vertical state, it can no longer rotate clockwise. The grate plate 3 cooperates with the hammer head 2 to crush the stone.

[0034] A torsion spring 31 is arranged between the rotating shaft of the grate plate 3 and the shell 1, one end of the torsion spring 31 is connected to the rotating shaft, and the other end is connected to the shell 1; when the grate plate 3 changes from the state to the vertical state, the torsion spring 31 accumulates force, and when the stone stuck between the two grate plates 3 is broken, the stone falls from the gap between the two grate plates 3, and the grate plate 3 is restored from the vertical state to the inclined state under the action of the torsion spring 31.

[0035] In a specific embodiment of the present invention, when the stone between the two grate plates 3 is crushed, the hammer head 2 applies a shear force to the stone, and the bottom of the stone may still be stuck between the two grate plates 3, resulting in the grate plate 3 being unable to be reset, and the gap between the grate plate 3 and the hammer head 2 is reduced. Even if the volume of the stone is slightly larger, it cannot pass through the gap between the grate plate 3 and the hammer head 2, the wear rate of the grate plate 3 will be aggravated, and the grate plate 3 is also easily blocked.

[0036] On the basis of the above-mentioned embodiment, the present invention adopts the following technical scheme: a push plate 4 is provided at the bottom of two adjacent grate plates 3; when the gap between two adjacent grate plates 3 is blocked by stones, the push plate 4 is moved upward to push the stones between the two adjacent grate plates 3 upward to avoid affecting the resetting of the grate plates 3.

[0037] An elastic connector 5 that can be extended and retracted along the radial direction of the shell 1 is provided between the grate plate 3 and the shell 1, a driving assembly 6 is connected between the rotating shaft of the grate plate 3 and the elastic connector 5, and a pushing member 7 is installed on the rotating shaft of the hammer head 2; when the grate plate 3 is in an inclined state, the elastic connector 5 is close to the shell 1, and at this time, the pushing member 7 will not contact the elastic connector 5 when rotating with the hammer head 2, and when the grate plate 3 is transformed from the inclined state to the vertical state, under the action of the driving assembly 6, the elastic connector 5 moves a distance away from the shell 1, and the pushing member 7 will squeeze the movable end of the elastic connector 5 when rotating with the hammer head 2, so that the movable end of the elastic connector 5 drives the push plate 4 to move toward between the two grate plates 3, and the push plate 4 pushes the stone between the two grate plates 3 upward, so that the stone is crushed by the hammer head 2 again, and the grate plate 3 is reset under the action of the torsion spring 31.

[0038] Specifically, the pushing member 7 includes a connecting rod 71 fixedly arranged on the rotating shaft of the hammer head 2, and an arc block 72 is fixedly arranged on the side of the connecting rod 71 close to the shell 1; when the hammer head 2 rotates, the connecting rod 71 and the arc block 72 rotate with the hammer head 2, and when the elastic connecting member 5 is away from the shell 1, the arc block 72 contacts the elastic connecting member 5 during rotation and presses the movable end of the elastic connecting member 5, thereby causing the push plate 4 connected to the movable end of the elastic connecting member 5 to move toward between the two adjacent grate plates 3, and the push plate 4 clears the stones stuck between the two adjacent grate plates 3.

[0039] The elastic connecting member 5 includes a fixed portion 51 and a movable portion 52, and a compression spring 53 is connected between the fixed portion 51 and the movable portion 52. The fixed portion 51 is slidably arranged on the rotating shaft of the grate plate 3 along the front-rear direction. A sliding sleeve is provided on the fixed portion 51, and the movable portion 52 is slidably arranged in the sliding sleeve. One end of the compression spring 53 is connected to the sliding sleeve, and the other end is connected to the movable portion 52. When the arc block 72 rotates and contacts the movable portion 52, the movable portion 52 is pushed to slide upward in the movable sleeve of the fixed portion 51, and the movable portion 52 drives the push plate 4 to move and thereby pushes the stone upward from between the two grate plates 3.

[0040] Square rods are fixedly provided on both the front and rear sides of the push plate 4, and a connecting sleeve is fixedly provided on the bottom of the movable part 52. A square hole is opened in the connecting sleeve, and the square rod cooperates with the square hole; when the elastic connecting member 5 is away from the shell 1, the square rod and the square hole slide relative to each other, that is, only sliding in the front and rear directions will occur between the push plate 4 and the movable part 52, and no relative rotation will occur, so that the push plate 4 always slides toward between the two adjacent grate plates 3, thereby pushing the stones between the two adjacent grate plates 3 upward.

[0041] Specifically, the bottom of the shell 1 is arc-shaped, the grate plate 3 and the push plate 4 are both arranged along the radial direction of the shell 1, the push plate 4 is arranged in the middle of the two grate plates 3, and the push plate 4 slides along the radial direction of the shell 1; when the push plate 4 moves, it moves toward the center of the two grate plates 3, so as to push out the stones stuck between the grate plates 3 as much as possible.

[0042] Preferably, a plurality of crushing teeth 41 are arranged on the top surface of the push plate 4 along the front-to-back direction; when the push plate 4 moves upward, the crushing teeth 41 arranged on the push plate 4 assist in crushing the stone stuck between two adjacent grate plates 3. If the hardness of the stone is large, the push plate 4 will not crush the stone when it moves upward, but will push the stone upward and crush it by the hammer head 2.

[0043] The driving assembly 6 includes an arc-shaped groove 63 formed on the outer wall of the rotating shaft of the grate plate 3, a sleeve 62 is formed on the fixed portion 51 and is sleeved with the rotating shaft of the grate plate 3, a protrusion 61 is fixedly provided on the inner wall of the sleeve 62, and the protrusion 61 is slidably provided in the arc-shaped groove 63, and a guide member 64 is also installed on the fixed portion 51 for moving the fixed portion 51 in the front-rear direction; when the grate plate 3 rotates, the protrusion 61 slides in the arc-shaped groove 63, thereby moving the fixed portion 51 in the front-rear direction.

[0044] The guide member 64 is a telescopic rod that can be extended in the front-to-back direction. One end of the telescopic rod is connected to the housing 1 , and the other end is connected to the fixing portion 51 .

[0045] In other embodiments of the present invention, the guide member 64 includes a guide groove opened on the outer periphery of the fixed portion 51 and extending in the front-to-back direction, and a guide block cooperating with the guide groove is fixedly arranged on the shell 1; when the protrusion 61 slides in the arc groove 63, the guide block slides in the guide groove and thus the fixed portion 51 moves in the front-to-back direction.

[0046] Working principle:

[0047] When crushing stones, stones are thrown into the entrance of the hammer crusher, and the stones falling on the bottom of the shell 1 are crushed again by the hammer head 2. When the grate plate 3 is tilted, the grate plate 3 is in an inclined state, the gap between two adjacent grate plates 3 is small, and the distance between the grate plate 3 and the hammer head 2 is large. The stones are basically crushed by the hammer head 2, which avoids the grate plate 3 from wearing quickly, and the grate plate 3 has a better screening effect on the stones; when the stone is stuck between the two grate plates 3, the hammer head 2 rotates and contacts the stone, so that the stone is crushed under the shear force of the grate plate 3. At this time, the gap between the adjacent grate plates 3 is large for crushing. When the grate plates 3 are rotated to a vertical state, the elastic connector 5 connected to the push plate 4 is moved away from the housing 1 by the driving assembly 6, and the push member 7 compresses the elastic connector 5 when rotating with the hammer head 2, thereby moving the push plate 4 toward between the two adjacent grate plates 3, and the stone stuck between the grate plates 3 is pushed upward by the push plate 4, so that the stone is crushed by the hammer head 2, and the grate plate 3 resumes its inclined state under the action of the torsion spring 31.

[0048] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A crushing device for water conservancy projects, comprising: The housing, hammer head and grate plates evenly distributed at the bottom of the hammer crusher are characterized by: The grate plate is rotatably arranged on the housing so as to be resettable. When a stone is inserted between two adjacent grate plates, the hammer head contacts the stone and pushes the grate plate clockwise from an inclined state to a vertical state. In the vertical state, the gap between the two adjacent grate plates is larger than the gap between the two adjacent grate plates in the inclined state. A push plate is provided at the bottom between two adjacent grate plates, and an elastic connector that expands and contracts along the radial direction of the shell is connected between the push plate and the grate plate. A driving assembly is provided between the rotating shaft of the grate plate and the elastic connector, so that the elastic connector moves forward and backward when the grate plate rotates. A pusher is installed on the rotating shaft of the hammer head. When the elastic connector is away from the shell, the pusher rotates with the hammer head and pushes the movable end of the elastic connector to expand and contract, thereby allowing the pusher plate to enter between the two adjacent grate plates. The elastic connecting member includes a fixed part and a movable part, a compression spring is connected between the fixed part and the movable part, the fixed part is slidably arranged on the rotating shaft of the grate plate along the front-back direction, a sliding sleeve is provided on the fixed part, the movable part is slidably arranged in the sliding sleeve, one end of the compression spring is connected to the sliding sleeve, and the other end is connected to the movable part; The driving assembly includes an arc groove on the outer wall of the rotating shaft of the grate plate, a sleeve is provided on the fixed part and is sleeved with the rotating shaft of the grate plate, a protrusion is provided on the inner wall of the sleeve and is slidably arranged in the arc groove, and a guide member is also installed on the fixed part to move the fixed part in the front and rear directions.

2. The hydraulic engineering crushing device according to claim 1, characterized in that: A torsion spring is arranged between the rotating shaft of the grate plate and the shell, one end of the torsion spring is connected to the rotating shaft, and the other end is connected to the shell.

3. The hydraulic engineering crushing device according to claim 1, characterized in that: Each grate plate is provided with a stopper on both the left and right sides. When the grate plate is in an inclined state, it contacts the stopper on the left side, and when the grate plate is in a vertical state, it contacts the stopper on the right side.

4. The hydraulic engineering crushing device according to claim 1, characterized in that: The pushing member comprises a connecting rod fixedly arranged on the rotating shaft of the hammer head, and an arc block is fixedly arranged on one side of the connecting rod close to the shell.

5. The hydraulic engineering crushing device according to claim 1, characterized in that: The front and rear sides of the push plate are both fixedly provided with square rods, the bottom of the movable part is fixedly provided with a connecting sleeve, a square hole is opened in the connecting sleeve, and the square rod is matched with the square hole.

6. The hydraulic engineering crushing device according to claim 1, characterized in that: A plurality of crushing teeth are arranged on the top surface of the push plate along the front-to-back direction.

7. The hydraulic engineering crushing device according to claim 1, characterized in that: The guide member is a telescopic rod which is telescopic in the front-rear direction, one end of the telescopic rod is connected to the shell body, and the other end is connected to the fixing part.

8. The hydraulic engineering crushing device according to any one of claims 1 to 7, characterized in that: When the grate plate is in a vertical state, the grate plate is parallel to the radial direction of the shell. When the grate plate is in an inclined state, it is tilted to the left by 45-60 degrees from the vertical state.

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