A protective support device for the main shaft of a mining crusher

Abstract

This utility model relates to the field of support device technology and discloses a protective support device for the main shaft of a mining crusher, including two fixed plates and two load-bearing mechanisms. The top of each of the two fixed plates has a groove, and a hydraulic rod is fixedly installed on the inner bottom wall of each of the two grooves. A support mechanism is fixedly installed on the top of each of the two hydraulic rods. This protective support device for the main shaft of a mining crusher, through the hydraulic rods, can quickly raise the support mechanism when the main shaft bearing fails, allowing the roller load-bearing mechanism to form rolling contact support with the main shaft, replacing the load-bearing function of the failed bearing. This structure avoids rigid friction between the main shaft and the bearing seat, effectively preventing secondary damage such as wear of the main shaft journal and damage to the bearing seat. Through the interlocking action of the toothed plate and toothed seat in the support mechanism, the distance between the two rollers can be easily adjusted, thus adapting to main shafts of different diameters and improving the applicability of the device.

Description

Technical Field

[0001] This utility model relates to the field of support device technology, specifically a protective support device for the main shaft of a mining crusher. Background Technology

[0002] In the mining and mineral processing industry, mining crushers are core crushing equipment, and the stability of their main shaft system directly affects the operating efficiency of the entire production line. As a key component bearing the working load of the crusher, the main shaft bearing is subjected to harsh working conditions of high impact, heavy load, and high dust for a long time. It is very easy to suddenly fail due to lubrication failure, fatigue wear, or excessive impact load. When the main shaft bearing fails, if effective temporary support cannot be provided in time, it will not only cause direct rigid friction between the main shaft and the bearing housing, resulting in secondary damage such as wear of the main shaft journal and damage to the bearing housing, but may also cause the crusher to be shut down for maintenance, seriously affecting the continuous operation of the working face.

[0003] However, existing technologies have the following problems in practical use:

[0004] The main shaft support structure of existing mining crushers usually adopts a rigid connection method of fixed bearing housing and rolling bearing, which lacks an emergency protection mechanism for bearing failure. When the bearing fails, the main shaft loses stable support, and its axis position will shift, causing the crusher rotor to become unbalanced, generating severe vibration, and even causing equipment shutdown accidents. Although some equipment has tried to improve reliability by adding spare bearings or adopting reinforced bearing structures, it still cannot solve the problem of temporary support when the bearing fails suddenly. Moreover, the spare structure will increase the size of the equipment and manufacturing costs. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To overcome the aforementioned deficiencies of the prior art, this utility model provides a protective support device for the main shaft of a mining crusher, solving the problems in the prior art:

[0007] The main shaft support structure of existing mining crushers usually adopts a rigid connection method of fixed bearing housing and rolling bearing, which lacks an emergency protection mechanism for bearing failure. When the bearing fails, the main shaft loses stable support, and its axis position will shift, causing the crusher rotor to become unbalanced, generating severe vibration, and even causing equipment shutdown accidents. Although some equipment has tried to improve reliability by adding spare bearings or adopting reinforced bearing structures, it still cannot solve the problem of temporary support when the bearing fails suddenly. Moreover, the spare structure will increase the size of the equipment and manufacturing costs.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a protective support device for the main shaft of a mining crusher, comprising two fixed plates and two load-bearing mechanisms. The top of each of the two fixed plates is provided with a groove, and a hydraulic rod is fixedly installed on the inner bottom wall of each of the two grooves. A support mechanism is fixedly installed on the top of each of the two hydraulic rods. The inner wall of each of the two support mechanisms is in contact with the outer surface of the load-bearing mechanism. An adjustment mechanism is fixedly installed between the two fixed plates and between the two support mechanisms.

[0010] Optionally, the support mechanism includes a support plate, which is fixedly mounted on the top of the hydraulic rod.

[0011] Optionally, the support mechanism further includes a toothed plate and a toothed seat, wherein the toothed plate is fixedly installed on the top of the support plate, and the bottom of the toothed seat is engaged with the top of the toothed plate.

[0012] Optionally, two mounting slots are provided on the top of each of the two fixing plates, and telescopic rods are fixedly installed on the inner bottom walls of the four mounting slots. The top ends of the four telescopic rods are respectively fixedly installed on the bottom of the two support mechanisms.

[0013] Optionally, the load-bearing mechanism includes a fixed shaft and a roller, the outer surface of the fixed shaft is in contact with the inner walls of the two mounting slots respectively, and the roller is fixedly installed on the outer surface of the fixed shaft.

[0014] Optionally, both adjustment mechanisms include a fixed cylinder and a fixed column. The two fixed cylinders are respectively fixedly installed on the side of the fixed plate and the side of the support plate, and the two fixed columns are respectively inserted into the inner wall of the two fixed cylinders.

[0015] Optionally, the two adjustment mechanisms further include positioning rods, which are threaded to the tops of the two fixed cylinders respectively, and the other ends of the two positioning rods pass through the two fixed cylinders and are threaded to the tops of the fixed columns respectively.

[0016] (III) Beneficial Effects

[0017] This utility model provides a protective support device for the main shaft of a mining crusher, which has the following advantages:

[0018] This protective support device for the main shaft of a mining crusher, through the use of hydraulic rods, can quickly raise the support mechanism in the event of main shaft bearing failure. This allows the roller bearing mechanism to form rolling contact support with the main shaft, replacing the load-bearing function of the failed bearing. This structure avoids rigid friction between the main shaft and the bearing housing, effectively preventing secondary damage such as main shaft journal wear and bearing housing damage. The toothed plate and toothed seat in the support mechanism allow for easy adjustment of the distance between the two rollers, thus adapting to main shafts of different diameters and improving the device's applicability. The adjustment mechanism allows for adjustment... The sliding connection between the fixed cylinder and the fixed column in the mechanism allows for easy adjustment of the distance between the two fixed plates and the two support mechanisms, thus easily meeting the different support spacing requirements of different crushers. Through the setting of the load-bearing mechanism, which adopts a combination structure of roller and fixed shaft, the rolling friction of the roller replaces the sliding friction of the traditional bearing, greatly reducing the rotational resistance of the main shaft. This not only maintains the stable rotation of the main shaft but also reduces additional energy consumption, allowing the crusher to continue operating until the end of the working face operation after bearing failure, avoiding production interruption due to emergency shutdown. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the front section structure of the fixing plate of this utility model;

[0021] Figure 3 This is a side view of the fixing plate structure of this utility model;

[0022] Figure 4 This is a side sectional view of the fixing plate structure of this utility model.

[0023] In the diagram: 1. Fixed plate; 2. Groove; 3. Hydraulic rod; 4. Support mechanism; 5. Load-bearing mechanism; 6. Mounting groove; 7. Telescopic rod; 8. Adjustment mechanism; 401. Support plate; 402. Tooth plate; 403. Tooth seat; 501. Fixed shaft; 502. Roller; 801. Fixed cylinder; 802. Fixed column; 803. Positioning rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1 to 4This utility model embodiment provides a support device, which is applied to scenarios where support devices are used to provide support according to different support requirements. In this embodiment, the structure of the support device is improved to make it easy to adjust. Specifically, the above-mentioned adjustment of the support device is taken as an example. Therefore, as a preferred solution in this embodiment, the support device is specifically a protective support device for the main shaft of a mining crusher, which makes it easier to adjust when the support device is used to support the main shaft of the crusher.

[0026] Please see Figures 1 to 4 This utility model provides a technical solution: a protective support device for the main shaft of a mining crusher. This support device is mainly used in scenarios where the support device is used for support according to different support requirements.

[0027] It includes two fixed plates 1 and two load-bearing mechanisms 5. The top of each fixed plate 1 is provided with a groove 2. The inner bottom wall of each groove 2 is fixedly installed with a hydraulic rod 3. The top of each hydraulic rod 3 is fixedly installed with a support mechanism 4. The inner wall of each support mechanism 4 is in contact with the outer surface of the load-bearing mechanism 5. An adjustment mechanism 8 is fixedly installed between the two fixed plates 1 and between the two support mechanisms 4.

[0028] In this embodiment, the fixing plate 1 serves as the basic installation component of the entire support device. It is fixed to the outside of the frame or bearing seat of the mining crusher by bolts or welding, providing stable installation support for other parts. This ensures that the support device remains in a fixed position during the operation of the crusher, preventing support failure due to vibration. It also provides a reliable installation reference for subsequent components such as the hydraulic rod 3 and the adjustment mechanism 8. The hydraulic rod 3 serves as the core power component, controlling the extension and retraction through the hydraulic system to achieve rapid lifting and lowering of the support mechanism 4. When the main shaft bearing fails, the hydraulic rod 3 quickly lifts the support mechanism 4, bringing the load-bearing mechanism 5 into contact with the main shaft. This replaces the support function of the failed bearing, providing temporary support at the moment of bearing failure. This prevents direct friction between the main shaft and the bearing seat, preventing wear on the main shaft journal and damage to the bearing seat. At the same time, it maintains stable rotation of the main shaft, reducing downtime losses.

[0029] In the above embodiments, as a preferred option, the support mechanism 4 includes a support plate 401, which is fixedly installed on the top of the hydraulic rod 3. Through the setting of the support plate 401, the support plate 401 connects the top of the hydraulic rod 3 with the load-bearing mechanism 5, transmits the lifting power of the hydraulic rod 3, and provides an installation platform for the gear plate 402 and gear seat 403, ensuring that the load-bearing mechanism 5 remains horizontal during the lifting process, avoiding tilting that would cause uneven force on the main shaft, and at the same time providing a stable base for the adjustment of the gear plate 402 and gear seat 403.

[0030] In the above embodiments, as a preferred option, the support mechanism 4 further includes a toothed plate 402 and a toothed seat 403. The toothed plate 402 is fixedly installed on the top of the support plate 401, and the bottom of the toothed seat 403 is snapped into the top of the toothed plate 402. Through the setting of the toothed plate 402, the toothed plate 402 is fixed to the top of the support plate 401, and the toothed structure is snapped into the toothed seat 403. By adjusting the snapping position of the toothed seat 403, the horizontal distance between the two load-bearing mechanisms 5 can be changed to adapt to spindles of different thicknesses, realize stepless adjustment of the support distance, improve the adaptability of the device to spindles of different specifications, avoid support failure due to differences in spindle diameter, and at the same time, the snapping structure can withstand a large load to ensure support stability.

[0031] In the above embodiment, as a preferred solution, two mounting slots 6 are opened on the top of each of the two fixed plates 1, and telescopic rods 7 are fixedly installed on the inner bottom wall of each of the four mounting slots 6. The top ends of the four telescopic rods 7 are respectively fixedly installed on the bottom of the two support mechanisms 4. Through the arrangement of the mounting slots 6 and the telescopic rods 7, the mounting slots 6 are opened on the top of the fixed plates 1, the telescopic rods 7 are fixed in the slots, and the top ends are connected to the bottom of the support mechanism 4. The telescopic rods 7 extend and retract with the rise and fall of the hydraulic rods 3, providing auxiliary support, preventing the hydraulic rods 3 from tilting due to independent force, enhancing the stability of the support mechanism 4, and avoiding bending or shaking of the hydraulic rods 3 under high load. At the same time, the buffering effect of the telescopic rods 7 can absorb some vibration and improve the impact resistance of the device.

[0032] In the above embodiments, as a preferred option, the load-bearing mechanism 5 includes a fixed shaft 501 and a roller 502. The outer surface of the fixed shaft 501 is in contact with the inner walls of the two mounting grooves 6 respectively. The roller 502 is fixedly installed on the outer surface of the fixed shaft 501. Through the setting of the fixed shaft 501, the fixed shaft 501 passes through the mounting groove 6 and is fixed at both ends to the top of the gear seat 403, serving as the support shaft of the roller 502. It transmits the load of the main shaft to the support mechanism 4, ensuring the coaxiality of the roller 502 and making the load of the main shaft evenly distributed on the two rollers 502, avoiding excessive local stress that could damage the roller 502. At the same time, the cooperation between the fixed shaft 501 and the mounting groove 6 can limit its axial movement and improve the support stability. The roller 502 is in direct contact with the outer surface of the main shaft. Rolling friction replaces the sliding friction of traditional bearings to support the rotation of the main shaft, greatly reducing the rotation resistance of the main shaft and reducing additional energy consumption. Even after the bearing fails, the main shaft can still continue to run through the rolling support of the roller 502, avoiding production interruption due to emergency shutdown. At the same time, rolling friction can reduce vibration and noise.

[0033] In the above embodiments, as a preferred option, both adjusting mechanisms 8 include a fixed cylinder 801 and a fixed column 802. The two fixed cylinders 801 are respectively fixedly installed on the side of the fixed plate 1 and the side of the support plate 401. The two fixed columns 802 are respectively inserted into the inner walls of the two fixed cylinders 801. Through the arrangement of the fixed cylinders 801 and the fixed columns 802, the fixed cylinders 801 are respectively installed on the side of the fixed plate 1 and the support plate 401. The fixed columns 802 are inserted into the fixed cylinders 801 and can slide. By adjusting the extension length of the fixed columns 802, the horizontal distance between the fixed plate 1 and the support mechanism 4 is changed, adapting to the bearing seat spacing of different crushers, realizing flexible adjustment of the lateral dimension of the support device, adapting to the installation requirements of different models of crushers, avoiding the inability to install the device due to differences in equipment specifications, and improving the versatility of the device.

[0034] In the above embodiment, as a preferred option, the two adjustment mechanisms 8 further include positioning rods 803. The two positioning rods 803 are respectively threaded to the top of the two fixed cylinders 801. The other end of the two positioning rods 803 passes through the two fixed cylinders 801 and is threaded to the top of the fixed column 802. By setting the positioning rods 803, the positioning rods 803 are threaded to the top of the fixed cylinders 801, and after passing through the fixed cylinders 801, they are tightened to the top of the fixed column 802, fixing the position of the fixed column 802 after adjustment, preventing it from sliding during vibration, ensuring that the adjusted support spacing remains stable, avoiding the support position shift due to the loosening of the fixed column 802, and ensuring the reliability of the support device.

[0035] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0036] In this invention, the working steps of the device are as follows:

[0037] First, when the main shaft bearing of the crusher fails, loosen the positioning rod 803. With the sliding action of the fixed column 802 on the inner wall of the fixed cylinder 801, adjust the distance between the two fixed plates 1 and the two support plates 401 to a suitable level. Then, tighten the positioning rod 803. Next, with the snapping action between the toothed plate 402 and the toothed seat 403, adjust the distance between the two load-bearing mechanisms 5 to a suitable level. Then, control the hydraulic rod 3 to extend upward, driving the support plate 401 and the load-bearing mechanism 5 to rise. After the hydraulic rod 3 is raised to the set height, the drum 502 contacts the outer surface of the main shaft, forming a rolling support, replacing the failed bearing to bear the load of the main shaft.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective support device for the main shaft of a mining crusher, comprising two fixed plates (1) and two load-bearing mechanisms (5), characterized in that: The top of each of the two fixed plates (1) is provided with a groove (2), the inner bottom wall of each of the two grooves (2) is fixedly installed with a hydraulic rod (3), the top of each of the two hydraulic rods (3) is fixedly installed with a support mechanism (4), the inner wall of each of the two support mechanisms (4) is in contact with the outer surface of the load-bearing mechanism (5), and an adjustment mechanism (8) is fixedly installed between the two fixed plates (1) and between the two support mechanisms (4).

2. The protective support device for the main shaft of a mining crusher according to claim 1, characterized in that: The support mechanism (4) includes a support plate (401), which is fixedly installed on the top of the hydraulic rod (3).

3. A protective support device for the main shaft of a mining crusher according to claim 2, characterized in that: The support mechanism (4) further includes a toothed plate (402) and a toothed seat (403). The toothed plate (402) is fixedly installed on the top of the support plate (401), and the bottom of the toothed seat (403) is engaged with the top of the toothed plate (402).

4. A protective support device for the main shaft of a mining crusher according to claim 1, characterized in that: Two mounting slots (6) are provided on the top of each of the two fixed plates (1), and telescopic rods (7) are fixedly installed on the inner bottom walls of the four mounting slots (6). The top ends of the four telescopic rods (7) are respectively fixedly installed on the bottom of the two support mechanisms (4).

5. A protective support device for the main shaft of a mining crusher according to claim 4, characterized in that: The load-bearing mechanism (5) includes a fixed shaft (501) and a roller (502). The outer surface of the fixed shaft (501) is in contact with the inner walls of the two mounting grooves (6), and the roller (502) is fixedly installed on the outer surface of the fixed shaft (501).

6. A protective support device for the main shaft of a mining crusher according to claim 2, characterized in that: Both of the adjustment mechanisms (8) include a fixed cylinder (801) and a fixed column (802). The two fixed cylinders (801) are respectively fixedly installed on the side of the fixed plate (1) and the side of the support plate (401), and the two fixed columns (802) are respectively inserted into the inner wall of the two fixed cylinders (801).

7. A protective support device for the main shaft of a mining crusher according to claim 6, characterized in that: The two adjustment mechanisms (8) also include positioning rods (803), which are threaded to the top of the two fixed cylinders (801) respectively, and the other end of the two positioning rods (803) passes through the two fixed cylinders (801) and is threaded to the top of the fixed column (802).

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