Anti-loosening device of crusher

Abstract

The utility model relates to the technical field of crushers, and discloses an anti-loosening device of a crusher, which comprises an outer shell and a transmission shaft rotatably mounted in the outer shell, and a feed port and a discharge port are respectively formed in the upper end and the lower end of the outer shell. Materials to be crushed can be poured into the outer shell through the feeding port in the upper end, when the crusher operates at a high speed, under the action of strong centrifugal force, the materials are located between the hammer head and the crushing teeth to form proper material particle sizes, and when the hammer head needs to be replaced due to large abrasion, limiting on the hammer head can be relieved by rotating the adjusting wheel, so that the crushing efficiency is improved. When the anti-loosening device for the crusher is used, the hammerhead can be fixed and limited through the arrangement of the dovetail groove, and compared with a traditional welding mode, the anti-loosening device for the crusher is convenient and fast to operate during disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically to a crusher anti-loosening device. Background Technology

[0002] A hammer crusher is a device that crushes materials through impact. It comes in single-rotor and double-rotor versions. It is a primary crusher that directly crushes materials with a maximum particle size of 600-1800 mm to 25 mm or less. Hammer crushers are suitable for crushing medium-hardness materials such as limestone, slag, coke, and coal in industries such as cement, chemical, power, and metallurgy. During operation, the motor drives the rotor to rotate at high speed. The material enters the crushing chamber evenly, and the high-speed rotating hammers impact, shear, and tear the material, causing it to be crushed. Simultaneously, the material's own gravity causes it to be propelled from the high-speed rotating hammers towards the internal baffles and screen bars. Material larger than the screen aperture is retained on the screen plate and continues to be struck and ground by the hammers until it is crushed to the required discharge particle size and finally discharged from the machine through the screen plate.

[0003] The existing hammer crusher has a relatively simple fixing structure for the hammers and rotor. The mounting shaft is fixed to the discs at both ends of the rotor by welding round steel at both ends. This structure can actually play a fixing role, but for the sake of convenience and reliability of maintenance and disassembly, the replacement cycle of the hammer crusher hammers is very short. Each time they are replaced, the round steel must be cut off, and the hammers must be replaced and then welded again. This process is too cumbersome. The discs are cast parts, and the force they are subjected to is large. Cast parts have low weldability. If there are defects in the welding, the weld seam is easy to crack, the fixing performance is lost, and when the rotor is running at high speed, the hammers are prone to loosening. The gap between the hammers and the wear-resistant liners changes accordingly, which ultimately leads to changes in the particle size of the material. Utility Model Content

[0004] The purpose of this utility model is to provide a crusher anti-loosening device to solve the problem mentioned in the background art: the existing hammer crusher's hammer and rotor fixing structure is relatively simple. The mounting shaft is fixed to the rotor's two end discs by welding with round steel at both ends. This structure can actually play a fixing role, but for the sake of convenience and reliability of maintenance and disassembly, the hammer replacement cycle of the hammer crusher is very short. Each time it is replaced, the round steel needs to be cut off, and welding is performed again after replacing the hammer. This process is too cumbersome. The discs are castings, and the force at this point is large. Castings have low weldability. If the welding is defective, the weld is easy to crack, the fixing performance is lost, and when the rotor runs at high speed, the hammer is prone to loosening. The gap between the hammer and the wear-resistant liner changes accordingly, ultimately leading to a change in the particle size of the material.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a crusher anti-loosening device, comprising an outer shell and a drive shaft rotatably installed inside the outer shell. The upper and lower ends of the outer shell are respectively provided with a feed inlet and a discharge outlet. Crushing teeth are fixedly installed at equal intervals on the inner wall of the outer shell. Connecting wheels are fixedly installed at equal intervals on the drive shaft. Several dovetail grooves are equidistantly provided on the outer side of the connecting wheels. Hammers are slidably installed in each of the dovetail grooves. Adjusting wheels are rotatably installed on the upper end of each connecting wheel.

[0006] Preferably, each of the dovetail grooves has a connecting groove inside, and a movable plate is slidably installed in each of the connecting grooves. A spring is fixedly installed between the side wall of the movable plate and the inner wall of the connecting groove.

[0007] Preferably, trapezoidal blocks are fixedly installed on the side walls of the movable plate, one end of the trapezoidal block is slidably connected in the dovetail groove, and the trapezoidal block is in contact with the hammer head.

[0008] Preferably, a plurality of connecting blocks are fixedly installed at equal intervals on the outer side of the adjusting wheel, and each connecting block has a sliding groove at its lower end, and a locking block is slidably installed in each sliding groove.

[0009] Preferably, a second spring is fixedly installed between the side wall of the locking block and the inner wall of the sliding groove, and a locking groove is opened on each of the hammer heads, and the locking block is slidably connected in the locking groove.

[0010] Preferably, the connecting wheel has several slots at equal intervals, and a movable block is slidably installed in each of the slots. A spring is fixedly installed between the lower wall of the movable block and the inner wall of the slot, and the locking block is slidably connected in the slot.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. When using this device to crush materials, the material to be crushed can be poured into the outer shell through the feed port at the top. When the crusher is running at high speed, under the action of strong centrifugal force, the material forms a suitable particle size between the hammer and the crushing teeth. When the hammer is worn and needs to be replaced, the limiting position of the hammer can be released by rotating the adjusting wheel, and the hammer can be removed from the connecting wheel along the dovetail groove. When using this crusher anti-loosening device, the hammer can be fixed and limited by the setting of the dovetail groove, which is more convenient to operate during disassembly and assembly than the traditional welding method.

[0013] 2. With the cooperation of the connecting groove, movable plate, trapezoidal block, spring one, slot, movable block, spring three, connecting block, slide, locking block and spring two, the device can fix and release the hammer head by rotating the adjusting wheel during use. When rotating, it can cooperate with the locking groove and slot. When it moves to a specific position, it can automatically complete the limit fixation, which is convenient for fixing and disassembling the hammer head. The setting of spring one can keep the hammer head in a tight state even after it is worn. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;

[0016] Figure 3 This is a cross-sectional three-dimensional structural diagram of the slotted system of this utility model;

[0017] Figure 4 This is a three-dimensional cross-sectional view of the connecting wheel system of this utility model;

[0018] Figure 5 For the present utility model Figure 2 Enlarged 3D structural diagram at point A.

[0019] In the diagram: 1. Outer casing; 2. Drive shaft; 3. Feed inlet; 4. Discharge outlet; 5. Crushing teeth; 6. Connecting wheel; 61. Dovetail groove; 62. Connecting groove; 63. Movable plate; 64. Trapezoidal block; 65. Spring 1; 66. Slot; 67. Movable block; 68. Spring 3; 7. Hammer; 71. Slot; 8. Adjusting wheel; 81. Connecting block; 82. Slide groove; 83. Slot; 84. Spring 2. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figure 1 - Figure 3A crusher anti-loosening device includes an outer shell 1 and a drive shaft 2 rotatably installed inside the outer shell 1. The upper and lower ends of the outer shell 1 are respectively provided with a feed inlet 3 and a discharge outlet 4. Crushing teeth 5 are fixedly installed at equal intervals on the inner wall of the outer shell 1. Connecting wheels 6 are fixedly installed at equal intervals on the drive shaft 2. Several dovetail grooves 61 are opened at equal intervals on the outer side of the connecting wheels 6. Hammers 7 are slidably installed in each dovetail groove 61. Adjusting wheels 8 are rotatably installed on the upper end of the connecting wheels 6.

[0022] In this embodiment: When using the device to crush materials, the material to be crushed can be poured into the interior of the outer shell 1 through the upper feed port 3. When the crusher is running at high speed, under the action of strong centrifugal force, the material forms a suitable particle size between the hammer 7 and the crushing teeth 5. When the hammer 7 is worn and needs to be replaced, the limiting position of the hammer 7 can be released by rotating the adjusting wheel 8, and the hammer 7 can be removed from the connecting wheel 6 along the dovetail groove 61. When using the anti-loosening device of the crusher, the hammer 7 can be fixed and limited by the setting of the dovetail groove 61. Compared with the traditional welding method, it is more convenient to operate during disassembly and assembly.

[0023] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figure 2 - Figure 5 Each of the dovetail grooves 61 has a connecting groove 62 inside, and each of the connecting grooves 62 has a movable plate 63 slidably installed inside. The side wall of the movable plate 63 and the inner wall of the connecting groove 62 are both fixedly installed with a spring 65. The movable plate 63 can be pushed outward by the spring 65 to generate a thrust.

[0024] Trapezoidal blocks 64 are fixedly installed on the side walls of the movable plate 63. One end of the trapezoidal block 64 is slidably connected in the dovetail groove 61. The trapezoidal block 64 is in contact with the hammer head 7. The upper side of the trapezoidal block 64 is a bevel. The hammer head 7 set in the dovetail groove 61 can be pushed by the spring 65 to make it fit tightly against the inner wall of the dovetail groove 61.

[0025] Several connecting blocks 81 are fixedly installed at equal intervals on the outer side of the adjusting wheel 8. Each connecting block 81 has a sliding groove 82 at its lower end, and a locking block 83 is slidably installed in each sliding groove 82.

[0026] A spring 84 is fixedly installed between the side wall of the locking block 83 and the inner wall of the slide groove 82. Each hammer head 7 is provided with a locking groove 71. The locking block 83 is slidably connected in the locking groove 71. The locking block 83 and the locking groove 71 can cooperate to limit the position of the hammer head 7.

[0027] The connecting wheel 6 has several slots 66 at equal intervals. Each slot 66 has a movable block 67 slidably installed in it. The lower wall of the movable block 67 and the inner wall of the slot 66 are fixedly installed together with a spring 68. The locking block 83 is slidably connected in the slot 66. The movable block 67 can block the upper end of the slot 66 to prevent debris from entering and blocking it. The elastic force of the second spring 84 is greater than that of the third spring 68.

[0028] In this embodiment: when the hammerhead 7 is heavily worn, the connecting block 81 can be rotated by rotating the adjusting wheel 8. When the connecting block 81 rotates, the locking block 83 at its lower end comes into contact with the side wall of the slot 71 and is pressed. The locking block 83 is pushed upward into the slide groove 82. Continue rotating the adjusting wheel 8 until the connecting block 81 is disengaged from the upper position of the hammerhead 7. During the rotation, the locking block 83 is always housed inside the slide groove 82. When it slides to the position of the movable block 67, the locking block 83 can be automatically pushed downward into the slot 66 by the action of the spring 84. The locking block 83 pushes the movable block 67 into the slot 66. At this time, the hammerhead 7 can be replaced by moving the hammerhead 7 outward along the dovetail groove 61. Simply slide it out. During use, continuous collisions and friction can cause a loose gap between the hammer head 7 and the dovetail groove 61. The spring 65 inside the device can always push the hammer head 7 outward during use, so that even if it becomes loose, it will always be in contact with the inner wall of the dovetail groove 61, achieving the effect of preventing loosening. When using the device, the hammer head 7 can be fixed and released by rotating the adjusting wheel 8. When rotating, it can cooperate with the slot 71 and the slot 66. When it is moved to a specific position, it can automatically complete the limit fixation, which is convenient for fixing and disassembling the hammer head 7. The spring 65 can keep the hammer head 7 in a tight state even after it is worn.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A loosening-preventing device for a crusher, comprising an outer shell (1) and a transmission shaft (2) rotatably installed inside the outer shell (1), an inlet (3) and an outlet (4) are respectively arranged at the upper end and the lower end of the outer shell (1), characterized in that: The inner wall of the outer shell (1) is fixedly equipped with crushing teeth (5) at equal intervals. The drive shaft (2) is fixedly equipped with connecting wheels (6) at equal intervals. The outer side of the connecting wheels (6) is provided with several dovetail grooves (61) at equal intervals. Hammers (7) are slidably installed in each of the dovetail grooves (61). Adjusting wheels (8) are rotatably installed on the upper end of the connecting wheels (6).

2. A break loose device for a rock crusher as defined in claim 1 wherein: Each of the dovetail grooves (61) has a connecting groove (62) inside, and a movable plate (63) is slidably installed in each of the connecting grooves (62). A spring (65) is fixedly installed between the side wall of the movable plate (63) and the inner wall of the connecting groove (62).

3. A break loose device for a rock crusher as defined in claim 2 wherein: The sidewalls of the movable plate (63) are all fixedly installed with trapezoidal blocks (64), one end of the trapezoidal block (64) is slidably connected in the dovetail groove (61), and the trapezoidal block (64) is in contact with the hammer head (7).

4. A break loose device for a rock crusher as defined in claim 3 wherein: Several connecting blocks (81) are fixedly installed at equal intervals on the outer side of the adjusting wheel (8). Each connecting block (81) has a sliding groove (82) at its lower end, and each sliding groove (82) has a locking block (83) slidably installed inside it.

5. A break loose device for a rock crusher as defined in claim 4 wherein: A spring (84) is fixedly installed between the side wall of the block (83) and the inner wall of the slide (82). A slot (71) is provided on each of the hammer heads (7), and the block (83) is slidably connected in the slot (71).

6. A break loose device for a rock crusher as defined in claim 5 wherein: The connecting wheel (6) has several slots (66) evenly spaced on it. Each slot (66) has a movable block (67) slidably installed in it. A spring (68) is fixedly installed between the lower wall of the movable block (67) and the inner wall of the slot (66). The locking block (83) is slidably connected in the slot (66).

Images