PE type jaw crusher bearing dismounting device

Abstract

The utility model belongs to the field of mechanical equipment, and particularly relates to a PE type jaw crusher bearing dismounting device which comprises a power mechanism, a bearing heater and a sleeve. The power mechanism is fixed to the fixing plate, force is applied to the main shaft through the power mechanism, so that the main shaft and the bearing are separated from the bearing box, the bearing is heated and expanded to be separated from the main shaft through the heating effect of the bearing heater, the bearing and the main shaft are separated through the blocking effect of the sleeve, and therefore the crusher bearing is rapidly disassembled.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical equipment, and in particular relates to a PE type jaw crusher bearing removal device. Background Art

[0002] The bearings in the jaw crusher are key components of this equipment. They are installed on the main shaft of the jaw crusher. There are four bearings in total, two of which are installed on the eccentric shaft of the main shaft. During the rotation of the eccentric shaft, the gap between the movable jaw plate and the fixed jaw plate changes periodically, thereby achieving material crushing.

[0003] During the long-term operation of the jaw crusher, due to the large impact force on the bearing or improper lubrication and maintenance, the gap between the bearing support frame will gradually increase or even fall off, and the bearing needs to be replaced. Because the bearing is installed inside the bearing box, the bearing box is an integrated type. If the bearing is heated, the bearing box will expand synchronously due to the heat, and the bearing cannot be removed using the principle of thermal expansion and contraction.

[0004] For this purpose, the utility model designs a device for disassembling the bearing and the main shaft together, and then separating the bearing and the main shaft by heating the bearing. Utility Model Content

[0005] The purpose of the utility model is to provide a PE type jaw crusher bearing removal device to solve the problems existing in the prior art. To achieve the above invention purpose, the technical solution adopted by the utility model is:

[0006] A PE type jaw crusher bearing removal device comprises a power mechanism, a bearing heater and a sleeve; the tail end of the power mechanism is fixedly arranged on a fixed plate, the output end of the power mechanism is connected to one end of a main shaft, and the other end of the main shaft is slidably connected to the sleeve; the output end shaft of the power mechanism applies force to the tail end of the main shaft, so that the main shaft drives the axial movement of the interference fit bearing, and the bearing is heated and expanded by the bearing heater during movement and then separated from the main shaft by the sleeve.

[0007] Furthermore, fixing rods are symmetrically arranged at both ends of the fixing plate, and fixing blocks and slide rail fixing frames are symmetrically arranged on the two fixing rods.

[0008] Furthermore, the fixing block is threadedly connected to the bearing box via a screw, and the bearing box is provided with a bearing sleeved on the main shaft.

[0009] Furthermore, the slide rail is provided with a slide groove slidably connected to the slider, the slider is fixedly arranged at one end of the heater bracket, and the other end of the heater bracket is fixedly connected to the bearing heater.

[0010] Furthermore, the other end of the fixing frame is fixedly connected to the sleeve.

[0011] Furthermore, the bearing heater includes a power supply, a coil, an iron core, an iron block and a temperature controller; the coil is wound around the iron core and connected to the power supply and the temperature controller, the iron blocks are fixed at both ends of the iron core, and the iron block is provided with an arc-shaped groove adapted to the main shaft at one end away from the iron core.

[0012] Furthermore, the sleeve includes sleeve one and sleeve two; sleeve one and sleeve two are distributed in steps, the inner diameter of sleeve one is larger than the inner diameter of the bearing box, and sleeve two is slidably connected to the main shaft.

[0013] The utility model has the following beneficial effects: a power mechanism is used to apply force to the main shaft, so that the main shaft and the bearing are separated from the bearing box, and then the heating effect of the bearing heater causes the bearing to expand due to heat and separate from the main shaft, and then the blocking effect of the sleeve separates the bearing and the main shaft, thereby realizing the rapid removal of the crusher bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a top view of the overall device;

[0015] Figure 2 is a side view of the heater bracket and the bearing heater;

[0016] Figure 3 This is a working diagram of the bearing heater;

[0017] Figure 4 yes Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0018] The following will be combined with the attached embodiment of the present utility model Figure 1-Figure 4 , the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0019] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] A PE type jaw crusher bearing removal device comprises a power mechanism 7, a bearing heater 12, and a sleeve 14; the tail end of the power mechanism 7 is fixedly arranged on a fixed plate 1, the output end of the power mechanism 7 is connected to one end of a main shaft 9, and the other end of the main shaft 9 is slidably connected to the sleeve 14; the output end shaft of the power mechanism 7 applies force to the tail end of the main shaft 9, so that the main shaft 9 drives the interference fit bearing 6 to move axially, and the bearing 6 is heated and expanded by the bearing heater 12 during movement, and then separated from the main shaft by the sleeve 14.

[0021] like Figure 1 As shown, the power mechanism 7 applies force downward to push the main shaft 9 to move downward, and the main shaft 9 drives the bearing 6 to disengage from the bearing box 5. It should be noted that the bearing 6 is sleeved on the main shaft 9. The bearing 6 in Figure 1 is a cross-sectional view (that is, the left-right symmetrical figure is the same bearing). When it moves to the appropriate position, the power mechanism 7 stops applying force. At this time, the bearing 6 is located between the two iron blocks 1204. The heater bracket 11 is slid so that the iron block 1204 and the main shaft 9 contact each other to form a circuit. The power supply 1201 is turned on, and the bearing 6 is under the action of the alternating current. The eddy current is generated under the bearing 6, so that the molecules in the bearing 6 move and collide irregularly to generate heat. The bearing 6 expands due to heat and the inner diameter increases, so that the interference fit between the bearing 6 and the main shaft 9 disappears. Then the bearing heater 12 is lifted, and the power mechanism 7 continues to apply force downward, and the bearing 6 and the main shaft 9 continue to move downward. Since the inner diameter of the sleeve 2 1402 is smaller than the inner diameter of the bearing 6, the bearing 6 will be blocked and separated from the main shaft 9. The main shaft 9 continues to move downward under the force of the power mechanism 7, and the bearing 6 will remain in the sleeve 1 1401. The power mechanism 7 is preferably a jack, and the output end of the power mechanism 7 is provided with an insulating material in contact with the main shaft 9, an insulating block 8 to avoid the generation of other circuits. Through the above operation, the bearing 6 can be quickly removed from the main shaft 9.

[0022] like Figure 1 As shown, the fixing rods 2 are symmetrically arranged at both ends of the fixing plate 1, and the two fixing rods 2 are symmetrically provided with fixing blocks 3 and slide rail 10 fixing frames 13. The fixing rods 2 and the fixing plate 1 are connected by threaded fitting, which can facilitate the installation and disassembly of the device.

[0023] The fixing block 3 is threadedly connected to the bearing box 5 through a screw rod 4, and a bearing 6 sleeved on the main shaft 9 is arranged in the bearing box 5. The bearing box 5 itself is provided with a bearing gland bolt hole, and the size of the screw rod 4 is adapted to the bearing gland bolt hole. The inner diameter of the bearing box 5 is consistent with the outer diameter of the bearing to ensure that the bearing 6 can be clamped in the bearing box 5.

[0024] like Figure 4 As shown, the slide rail 10 is provided with a slide groove 101 slidably connected to a slider 1101, the slider is fixedly arranged at one end of a heater bracket 11, and the other end of the heater bracket 11 is fixedly connected to the bearing heater 12. The heater bracket 11 is preferably Y-shaped and should be made of insulating material, such as PE high density.

[0025] like Figure 1 As shown, the other end of the fixing bracket 13 is fixedly connected to the sleeve 14. The fixing bracket 13 is fixedly connected to the sleeve 1 1401 and the sleeve 2 1402. The fixing bracket 13 can be provided in multiple numbers, which are specifically provided according to the requirements.

[0026] like Figure 2 , 3 As shown, the bearing heater 12 includes a power supply 1201, a coil 1202, an iron core 1203, an iron block 1204 and a temperature controller 1205; the coil 1202 is wound around the iron core 1203 and connected to the power supply 1201 and the temperature controller 1205, the iron blocks 1204 are fixedly arranged at both ends of the iron core 1203, and an arc groove adapted to the spindle 9 is arranged at one end of the iron block 1204 away from the iron core 1203. It should be noted that the power supply 1201 provides an alternating current. When high-frequency alternating current is passed through the coil 1202, an alternating induced magnetic field is generated at this time. Under the action of the alternating magnetic lines of force, the bearing 6 generates a large eddy current in the inner part. The eddy current causes the molecules in the bearing 6 to move irregularly at high speed, and the molecules collide and rub against each other to generate heat energy, so that the bearing 6 itself generates heat at high speed, thereby achieving the purpose of heating and expanding the bearing 6, thereby increasing the inner diameter of the bearing 6. One end of the iron core 1203 is provided with a shaped groove that matches the main shaft 9. Because the bearing 6 itself is made of steel, the groove and the main shaft form a closed loop through which current can flow. The temperature controller 1205 is a prior art that can detect the temperature of the bearing 6. When the temperature reaches 100 degrees, the temperature controller 1205 automatically cuts off the circuit to avoid wasting electricity. At this time, the bearing 6 has expanded and can proceed to the next step.

[0027] like Figure 1As shown, the sleeve 14 includes a sleeve 1401 and a sleeve 2 1402, the sleeve 1401 and the sleeve 2 1402 are arranged in a stepped manner, the inner diameter of the sleeve 1401 is larger than the inner diameter of the bearing box 5, and the sleeve 2 1402 is slidably connected to the main shaft 9. The sleeve 1401 is used to receive the bearing 6, and the connecting part between the sleeve 1401 and the sleeve 2 1402 is a hollow disc, which is used to block the bearing 6. After being blocked, the bearing 6 falls off in the sleeve 1401. The sleeve 14 should be made of insulating material to ensure that no other loops are generated.

[0028] Working process: the power mechanism 7 applies force downward to push the main shaft 9 to move downward, and the main shaft 9 drives the bearing 6 to disengage from the bearing box 5. When it moves to the appropriate position, the power mechanism 7 stops applying force. At this time, the bearing 6 is located between the two iron blocks 1204. The sliding heater bracket 11 makes the iron block 1204 and the main shaft 9 contact each other to form a circuit. The power supply 1201 is turned on, and the bearing 6 generates eddy currents under the action of the alternating current, so that the molecules in the bearing 6 move and collide irregularly to generate heat. The inner diameter of the bearing 6 expands due to heat, so that the interference fit between the bearing 6 and the main shaft 9 disappears, and then the bearing heater 12 is lifted, and the power mechanism 7 continues to apply force downward, and the bearing 6 and the main shaft 9 continue to move downward. Since the inner diameter of the sleeve 2 1402 is smaller than the inner diameter of the bearing 6, the bearing 6 will be blocked and disengaged from the main shaft 9. The main shaft 9 continues to move downward under the force of the power mechanism 7, and the bearing 6 will remain in the sleeve 1 1401, thereby realizing the rapid disassembly of the bearing 6.

[0029] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A PE type jaw crusher bearing removal device, characterized in that: It comprises a power mechanism (7), a bearing heater (12), and a sleeve (14); The tail end of the power mechanism (7) is fixedly arranged on the fixed plate (1), the output end of the power mechanism (7) is connected to one end of the main shaft (9), and the other end of the main shaft (9) is slidably connected to the sleeve (14); the output end shaft of the power mechanism (7) applies force to the tail end of the main shaft (9), so that the main shaft (9) drives the interference-fit bearing (6) to move axially, and the bearing (6) is heated and expanded by the bearing heater (12) during movement, and then separated from the main shaft by the sleeve (14).

2. A PE type jaw crusher bearing removal device according to claim 1, characterized in that: Fixed rods (2) are symmetrically arranged at both ends of the fixed plate (1), and fixed blocks (3) and slide rail (10) fixing frames (13) are symmetrically arranged on the two fixed rods (2).

3. A PE type jaw crusher bearing removal device according to claim 2, characterized in that: The fixing block (3) is threadably connected to the bearing box (5) via a screw rod (4); a bearing (6) sleeved on the main shaft (9) is provided in the bearing box (5).

4. A PE type jaw crusher bearing removal device according to claim 2, characterized in that: The slide rail (10) is provided with a slide groove (101) slidably connected to a slider (1101); the slider is fixedly arranged at one end of a heater bracket (11); and the other end of the heater bracket (11) is fixedly connected to the bearing heater (12).

5. A PE type jaw crusher bearing removal device according to claim 2, characterized in that: The other end of the fixing frame (13) is fixedly connected to the sleeve (14).

6. A PE type jaw crusher bearing removal device according to claim 1, characterized in that: The bearing heater (12) comprises a power supply (1201), a coil (1202), an iron core (1203), an iron block (1204) and a temperature controller (1205); The coil (1202) is wound around the iron core (1203) and connected to the power supply (1201) and the temperature controller (1205); the iron blocks (1204) are fixedly arranged at both ends of the iron core (1203); and an arc-shaped groove adapted to the main shaft (9) is provided at one end of the iron block (1204) away from the iron core (1203).

7. A PE type jaw crusher bearing removal device according to claim 1, characterized in that: The sleeve (14) comprises a sleeve 1 (1401) and a sleeve 2 (1402); The sleeve 1 (1401) and the sleeve 2 (1402) are distributed in a stepped manner; the inner diameter of the sleeve 1 (1401) is larger than the inner diameter of the bearing box (5); and the sleeve 2 (1402) is slidably connected to the main shaft (9).

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