Bearing heat sleeve device

Abstract

This utility model belongs to the field of bearing assembly technology, specifically disclosing a bearing heat-shrinking device, including a basic fixing component and a retaining component. The basic fixing component includes a fixed base, a movable base, and a clamping block. Both the fixed base and the movable base are equipped with at least one clamping block, which can be driven to move synchronously towards the radial center position of the bearing to press and hold against the radial outer surface of the bearing outer ring and limit the bearing in the radial direction. Both the fixed base and the movable base are equipped with a retaining component, which includes a retaining member and two stops. The two stops are arranged parallel to each other along the axial direction of the bearing and are used to limit the bearing in the axial direction. Compared with the prior art, the bearing heat-shrinking device of this utility model has the advantages of simple structure, convenient operation, strong adaptability, and high safety.

Description

Technical Field

[0001] This invention belongs to the field of bearing assembly technology, and particularly relates to a bearing heat sleeve device. Background Technology

[0002] Bearing heat fitting (also known as heat-fitting) is an installation method that involves heating the bearing to expand its inner ring, allowing it to be easily fitted onto the shaft. This method is suitable for interference fits and avoids damage caused by mechanical pressure.

[0003] When using bearing heat-shrink technology for bearing installation, the bearing must first be heated to a set temperature. After heating, the bearing's temperature rises, making direct handling and installation impossible for workers; therefore, tools are needed. Current technologies often use clamps or lifting devices to move the heated bearing. For example, using heat-resistant clamps to hold the bearing outer ring can prevent burns, but these clamps must be matched to the bearing size, and they can only hold the bearing radially, not axially, which can lead to the bearing falling during transport. Alternatively, magnetic lifting devices can be used, using electromagnetic attraction to lift the bearing. This method is suitable for handling and installing large bearings, but it is unsuitable for bearings made of non-magnetic materials such as stainless steel, and may leave residual magnetism, affecting subsequent use, thus having significant limitations. Some workers choose to wear asbestos gloves to quickly move the bearing from the heating device to the installation position. This method carries a high risk of burns from the high temperature and requires a high level of operational skill.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a bearing heat-shrinking device to solve the problems of low stability and inconvenient operation in the heat-shrinking process caused by the lack of radial and axial limiting of traditional tools, as well as poor adaptability caused by the inability of traditional tools to be adjusted.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a bearing heat-shrinking device, comprising a base fixing component and a retaining component. The base fixing component includes a fixed base, a movable base, and a clamping block. Both the fixed base and the movable base are equipped with at least one clamping block. The clamping block can be driven to move synchronously towards the radial center position of the bearing to press and hold against the radial outer surface of the bearing outer ring and limit the bearing in the radial direction. Both the fixed base and the movable base are equipped with a retaining component. The retaining component includes a retaining member, which includes two blocks. The two blocks are arranged parallel to each other along the axial direction of the bearing and are used to limit the bearing in the axial direction.

[0007] Furthermore, the basic fixing component also includes a fixing belt. One end of the fixing belt is fixedly connected to a set position of the fixing base, and the other end passes through the clamping block in sequence. After surrounding the bearing in the circumferential direction, it is wound around another set position of the fixing base. The fixing belt can be controlled to tighten to press against the radial outer surface of the bearing outer ring. The clamping block moves synchronously with the tightening of the fixing belt to press against and hold against the bearing outer ring.

[0008] Furthermore, the fixing components also include a handle, and both the fixed base and the movable base are detachably fitted with the handle.

[0009] Furthermore, the clamping block includes clamping block I, clamping block II, clamping block III and clamping block IV. Clamping block I and clamping block IV are respectively hinged to the fixed base, and clamping block II and clamping block III are respectively hinged to the movable base. The fixing belt is sequentially passed through clamping block I, clamping block II, clamping block III and clamping block IV.

[0010] Furthermore, the fixing component includes an adjusting rod, and the two stops of the fixing component are installed on the fixed base or the movable base through the adjusting rod. The axis of the adjusting rod is parallel to the axis of the bearing, and the two stops are respectively installed at both ends of the adjusting rod in a lockable manner that allows them to move axially along the adjusting rod.

[0011] Furthermore, it also includes a fixed column and a retractable assembly. The retractable assembly includes a winding column. The fixed column is detachably installed at a set position on the fixed base. The winding column is installed at another set position on the fixed base in a manner that allows it to rotate around its own axis in a limited manner. One end of the fixing belt is fixed to the fixed column, and the other end is fixedly connected to the winding column. The winding column can be driven to rotate to wind the fixing belt and tighten the fixing belt.

[0012] Furthermore, the retractable assembly also includes a limiting ratchet and a limiting pawl. The limiting ratchet is fixedly installed on the top of the winding column, and the limiting pawl is hinged to the fixed base and located near the limiting ratchet. The limiting pawl can be manipulated to swing and engage with the limiting ratchet to limit the rotation direction of the winding column, or the limiting pawl can be manipulated to swing and disengage from the limiting ratchet to release the limitation on the winding column.

[0013] Furthermore, the retraction assembly also includes a locking torsion spring, which is mounted on the bottom surface of the winding column.

[0014] Furthermore, the retaining assembly consists of at least two retaining members, which are arranged symmetrically.

[0015] Furthermore, the fixed base is also equipped with guide posts for changing the direction of the fixed belt. There are two guide posts, which are arranged to avoid each other.

[0016] The working principle of this technical solution is as follows: Before the bearing is heated, the fixed base and the movable base are placed on both sides of the bearing in the radial direction. The fixing belt is in a loose state and wraps around the bearing in the circumferential direction. The position of the stop blocks is adjusted so that the stop blocks fit against the axial end of the bearing. The position of each stop block is adjusted so that the inner ring of the bearing is fully exposed and not obstructed. After adjustment, each stop block is locked. Then, the winding column is rotated to tighten the fixing belt. During the tightening process of the fixing belt, multiple clamping blocks move synchronously towards the bearing as the fixing belt tightens until all the clamping blocks are pressed against the bearing. The bearing is held in place on the radial outer surface of the outer ring. The retaining strap also presses against the remaining portion of the outer ring, completely fixing the bearing radially. After the retaining strap tightens, the limiting ratchet and pawl work together to ensure the winding column can only rotate in the direction of tightening the retaining strap, preventing it from rotating in the opposite direction. During the tightening process, the moving base also moves towards the fixed base. Multiple retaining components limit the bearing axially, preventing it from detaching from the device and ensuring the inner and outer rings do not separate during heating. After fixing, a handle is installed. Only one handle can be installed on either the fixed or moving base, or two handles can be installed on each base. The bearing is then transferred to the heating furnace using the handle. During heating, the entire device remains in place and can be heated along with the bearing. Once the set temperature is reached, the bearing is transferred and installed using the handle.

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

[0018] The bearing heat-shrinking device provided by this utility model, through the combined use of the basic fixing component and the fixed stop component, can simultaneously achieve reliable radial and axial positioning of the bearing, solving the problems of easy falling off and unstable installation during bearing transportation in the prior art; the adjustable structure makes the device applicable to bearings of different sizes, effectively improving the universality of the device; compared with the prior art, the bearing heat-shrinking device of this utility model has the advantages of simple structure, convenient operation, strong adaptability and high safety. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a bearing heat sleeve device according to the present invention;

[0020] Figure 2 This is a side view of the bearing heat sleeve device of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the fixed base of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the movable base of this utility model;

[0023] Figure 5 This is a side view of the fixing component of this utility model.

[0024] Figure 6 This is a schematic diagram of the main structure of the fixing component of this utility model;

[0025] Figure 7 This is a schematic diagram of the main structure of the clamping block of this utility model;

[0026] Figure 8 This is a side view of the clamping block of this utility model.

[0027] Figure 9 This is a schematic diagram of the assembly structure of the fixing strap of this utility model;

[0028] Figure 10 This is a schematic diagram of the handle of this utility model;

[0029] Figure 11 This is a schematic diagram of the structure of the fixed column of this utility model;

[0030] Figure 12 This is a side view of the retractable assembly of this utility model.

[0031] Figure 13 This is a front view structural diagram of the retractable assembly of this utility model;

[0032] Figure 14 This is a rear view structural diagram of the retractable assembly of this utility model. Detailed Implementation

[0033] The following detailed description illustrates the specific implementation methods:

[0034] The reference numerals in the accompanying drawings include: fixed base 1, movable base 2, clamping block 3, abutment plate 301, ear plate 302, clamping block I 3A, clamping block II 3B, clamping block III 3C, clamping block IV 3D, fixing strap 4, fixing component 5, stop block 501, adjusting rod 502, adjusting nut 503, bearing 6, handle 7, retraction assembly 8, limiting ratchet 801, limiting pawl 802, locking shaft 803, guide post 9, fixed column 10, winding column 11, locking torsion spring 12.

[0035] 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.

[0036] The basic implementation examples are as follows: Figure 1-14As shown: A bearing heat-shrinking device includes a base fixing assembly and a retaining assembly. The base fixing assembly includes a fixed base 1, a movable base 2, and a clamping block 3. Both the fixed base 1 and the movable base 2 are equipped with at least one clamping block 3. The clamping block 3 can be driven to move synchronously towards the radial center position of the bearing 6 to press and hold against the radial outer surface of the outer ring of the bearing 6 and limit the bearing 6 in the radial direction. Both the fixed base 1 and the movable base 2 are equipped with a retaining assembly. The retaining assembly includes a retaining member 5. The retaining member 5 includes two stops 501. The two stops 501 are arranged parallel to each other along the axial direction of the bearing 6. The stops 501 are used to limit the bearing 6 in the axial direction. Specifically, in the basic fixing components, the fixed base 1 and the movable base 2 serve as supporting structures and can be made of cast iron or welded steel plates. The main structures of the fixed base 1 and the movable base 2 are similar, both being "C"-shaped structures formed by two parallel horizontal plates connected by a vertical plate. The difference between the two lies in the mounting holes and the relative positional changes during use. In actual use, the fixed base 1 is first pressed against the bearing 6 as a base, and then the movable base 2 is moved towards the fixed base 1, so that the clamping blocks 3 installed on both will eventually be pressed against the bearing 6. This is understandable to those skilled in the art and will not be elaborated here. The clamping block 3 can be made of high-temperature resistant materials, such as alloy steel or ceramic composite materials. The clamping block 3 consists of a vertical abutment plate 301 and a horizontally arranged ear plate 302. Two parallel ear plates 302 are arranged, and the abutment plate 301 is installed between the two ear plates 302 and located at the end face. The abutment plate 301 directly contacts and abuts against the radial outer surface of the outer ring of the bearing 6. Its contact surface can be designed as an arc to match the contour of the outer ring of the bearing 6. The stop block 501 in the retaining assembly can be designed to be adjustable, and its axial position can be adjusted by bolts or slide rails to accommodate bearings 6 of different sizes. The installation method of the retaining component 5 includes welding, bolt fixing or quick clamping mechanism, which facilitates disassembly and maintenance. As a preferred embodiment, the parts of the clamping block 3 and the stop block 501 that directly contact the bearing 6 can be covered with a high-temperature resistant buffer structure, such as a high-temperature resistant hot-pressing buffer material (fiberglass cloth + Teflon cloth + knitted non-woven fabric) or a high-temperature resistant PTFE shock-absorbing buffer pad, to avoid damage to the surface of the bearing 6. This embodiment effectively solves the problems of unstable clamping and lack of axial limiting in the existing bearing 6 heat fitting process. The synchronously driven clamping block 3 achieves radially uniform clamping, avoiding localized stress concentration caused by traditional clamps; the axially parallel stop blocks 501 form double limiting, effectively preventing the bearing 6 from falling off during transport. Compared with heat-resistant clamps, this device can adapt to bearings 6 of different sizes without leaving clamping marks on the bearing 6 surface, and will not fall off during transport. Compared with magnetic lifting tools, this solution is applicable to bearings 6 of all materials, eliminating the risk of magnetization residue. By replacing manual handling with mechanical limiting, the risk of burns to operators is significantly reduced, improving the safety and reliability of the installation process.

[0037] In this embodiment, the basic fixing component also includes a fixing strap 4. One end of the fixing strap 4 is fixedly connected to a set position of the fixing base 1, and the other end passes through the clamping block 3 in sequence. After surrounding the bearing 6 in the circumferential direction, it is wound around another set position of the fixing base 1. The fixing strap 4 can be controlled to tighten to press against the radial outer surface of the outer ring of the bearing 6. The clamping block 3 moves synchronously with the tightening of the fixing strap 4 to press and hold against the outer ring of the bearing 6. Specifically, the fixing strap 4 can be made of metal braided strap or high-temperature resistant composite material strap. The connection method of the fixing strap 4 passing through the clamping block 3 includes, but is not limited to: opening a through hole on the clamping block 3 for the fixing strap 4 to pass through, or setting a guide groove on the side of the clamping block 3 to guide the direction of the fixing strap 4. In this embodiment, the fixing strap 4 passes through the gap between the two ear plates 302 of the clamping block 3 and then abuts against the back of the abutment plate 301 (that is, the non-contact surface, the wall surface on the side that does not contact the bearing 6). The tightening mechanism of the fixing strap 4 can be a manual winch, an electric hoist, or a ratchet locking device, with the ratchet locking device enabling unidirectional tightening and position holding. The connection between the fixing strap 4 and the base can be welding, bolting, or a quick-release pin structure. As a preferred embodiment, the surface of the fixing strap 4 can be provided with anti-slip textures to enhance friction with the outer ring of the bearing 6. Stable clamping of the heated bearing 6 is achieved through the circumferential encirclement and radial tightening of the fixing strap 4. Specifically, when the fixing strap 4 tightens, it drives multiple clamping blocks 3 to move synchronously towards the center of the bearing 6, forming uniform radial pressure and avoiding deformation of the bearing 6 caused by single-point pressure in traditional clamps. Simultaneously, the circumferential wrapping effect of the fixing strap 4 further effectively prevents axial and radial slippage of the bearing 6 during transport. Compared with magnetic lifting devices, this solution is not limited by the magnetism of the bearing 6 material and is suitable for the installation of various metal bearings 6. The linkage design of the fixing belt 4 and the clamping block 3 makes the operation process simpler. Only a single tightening action is needed to complete the dual fixation in the radial and axial directions, which significantly reduces the risk of high-temperature operation.

[0038] In this embodiment, the fixing assembly also includes a handle 7, which is detachably mounted on both the fixed base 1 and the movable base 2. Specifically, the handle 7 is detachably mounted on the fixed base 1 and the movable base 2 via a threaded connection or a snap-fit ​​connection. The handle 7 can be made of metal with a non-slip textured surface to enhance operational stability. As a preferred embodiment, only one handle 7 can be provided, mounted on either the movable base 2 or the fixed base 1; alternatively, a lifting ring can be used instead of the handle 7 to facilitate the lifting of large bearings 6. A heat-insulating component can be added to the handle 7 for gripping, further reducing the risk of burns. By providing a detachable handle 7 on the fixed base 1 and the movable base 2, operators can choose to hold the bearing on one or both sides depending on the actual installation environment, achieving more stable handling and positioning control during the heat fitting of the bearing 6. Specifically, when the bearing 6 needs to be transferred from the heating station to the installation position after heating, the operator can directly grasp the entire device using the handle 7, avoiding contact with high-temperature components; furthermore, during the installation of the bearing 6, the position of the device can be finely adjusted using the handle 7 to ensure the alignment of the bearing 6 with the shaft. Compared with the existing technology of directly clamping the bearing 6, the design of the double-sided handle 7 provides better axial control and effectively prevents the bearing 6 from falling off during transportation.

[0039] In this embodiment, the clamping blocks 3 include clamping blocks I 3A, II 3B, III 3C, and IV 3D. Clamping blocks I 3A and IV 3D are respectively hinged to the fixed base 1, and clamping blocks II 3B and III 3C are respectively hinged to the movable base 2. The fixing strap 4 passes through clamping blocks I 3A, II 3B, III 3C, and IV 3D in sequence. Clamping blocks I 3A and IV 3D are mounted on the fixed base 1 by a shaft hinge, allowing radial swing to accommodate bearings 6 of different sizes. Clamping blocks II 3B and III 3C are mounted on the movable base 2 by a shaft hinge, forming a symmetrical arrangement with the two clamping blocks 3 on the fixed base 1. The fixing strap 4 passes through the four clamping blocks 3 in sequence, and when the fixing strap 4 is tightened, the four clamping blocks 3 can move synchronously towards the center of the bearing 6. By setting four symmetrically distributed clamping blocks 3 and using a linkage control method with a fixing belt 4, multi-point uniform clamping of the outer ring of the bearing 6 is achieved. Compared with single-point or two-point clamping, four-point clamping can effectively prevent the bearing 6 from tilting or falling off during the heat fitting process. Specifically, the four clamping blocks 3 can generate uniform radial pressure under the action of the fixing belt 4, ensuring that the bearing 6 remains stable during heating and transportation. In addition, the hinged structure design allows the clamping blocks 3 to adapt to bearings 6 of different diameters, improving the versatility of the device.

[0040] In this embodiment, the fixing member 5 includes an adjusting rod 502. Two stops 501 of the fixing member 5 are installed on the fixed base 1 or the movable base 2 via the adjusting rod 502. The axis of the adjusting rod 502 is parallel to the axis of the bearing 6. The two stops 501 are respectively installed at both ends of the adjusting rod 502 in a lockable manner that allows them to move axially along the adjusting rod 502. In this embodiment, the adjusting rod 502 is a threaded rod, and multiple adjusting nuts 503 are installed on the adjusting rod 502. Both the fixed base 1 and the movable base 2 have through holes for installation. After the adjusting rod 502 passes through the through holes, it is locked by the two adjusting nuts 503. The stops 501 are located at the ends, and each stop 501 is provided with two adjusting nuts 503. The two adjusting nuts 503 can both adjust the position of the stops 501 and lock the stops 501 onto the adjusting rod. As a superior implementation, the stop 501 can be adjusted and swung on the adjusting rod before being locked, ensuring axial restraint of the inner and outer rings of the bearing 6 without obstructing the inner ring and thus not affecting the installation of the bearing 6. The adjustable stop 501 design can accommodate the axial restraint requirements of bearings 6 of different specifications. The parallel arrangement of the adjusting rod 502 with the axis of the bearing 6 ensures that the stop 501 always moves in the correct direction, avoiding installation deviations. The adjustable position of the stop 501 solves the problem of existing clamps being unable to achieve axial restraint, effectively preventing the bearing 6 from falling off during transport. The mechanical locking structure is simple to operate and highly reliable, offering wider applicability compared to magnetic lifting devices.

[0041] In this embodiment, a fixed column 10 and a take-up and put-down assembly 8 are also included. The take-up and put-down assembly 8 includes a winding column 11. The fixed column 10 is detachably installed at a set position on the fixed base 1. The winding column 11 is installed at another set position on the fixed base 1 in a way that can be limited to rotate around its own axis. One end of the fixing strap 4 is fixed to the fixed column 10, and the other end is fixedly connected to the winding column 11. The winding column 11 can be driven to rotate to wind the fixing strap 4 and tighten the fixing strap 4.

[0042] In this embodiment, the take-up and take-down assembly 8 further includes a limiting ratchet 801 and a limiting pawl 802. The limiting ratchet 801 is fixedly installed on the top of the winding column 11, and the limiting pawl 802 is hinged to the fixed base 1 and located near the limiting ratchet 801. The limiting pawl 802 can be manipulated to swing and engage with the limiting ratchet 801 to limit the rotation direction of the winding column 11, or the limiting pawl 802 can be manipulated to swing and disengage from the limiting ratchet 801 to release the limitation on the winding column 11.

[0043] Specifically, the fixed column 10 can be installed on the fixed base 1 by threaded connection or pin fixation, which facilitates adjustment of the installation position according to the size of the bearing 6. The fixed base 1 has a slot for connecting the end of the fixing band 4. The winding column 11 is rotatably installed through the bearing 6 or bushing, and its driving method can be a manual crank, motor drive, or pneumatic motor. The connection method between the fixing band 4 and the winding column 11 includes, but is not limited to, snap-fit ​​fixing, bolt crimping, or welding. The limiting structure of the winding column 11 can be a ratchet and pawl mechanism, a friction brake, or an electromagnetic brake. In this embodiment, a ratchet and pawl mechanism is preferred. The ratchet and pawl mechanism achieves unidirectional limiting through the meshing of the pawl and the ratchet. During operation, the limiting or releasing is achieved by moving the pawl. The limiting ratchet 801 is a disc with a toothed structure, and its tooth design allows for unidirectional rotation and locking. The limiting pawl 802 is made of metal and forms a hinge structure with the fixed base 1 through a pin. Its end has a snap-fit ​​part that matches the tooth shape of the ratchet. The control methods include manual operation or remote control via a linkage mechanism. As a preferred embodiment, a return spring can be added to the end of the pawl, allowing it to automatically maintain engagement with the ratchet without external force. The rotational limit of the winding post 11 is achieved through the engagement of the ratchet and pawl; the beveled tooth surface design allows the pawl to slip out during reverse rotation. In this embodiment, the ratchet and pawl mechanism can be located on the outer wall of the fixed base 1 or inside the fixed base 1, preferably on the top surface of the outer wall of the fixed base 1 for easier operation. The limiting pawl 802 is hinged to the fixed base 1 via a pin, while the limiting ratchet 801 is mounted via a locking shaft 803. The fixed base 1 has a hole for inserting the locking shaft 803, which is rotatably inserted into the fixed base 1. The limiting ratchet 801 and the winding column 11 are sequentially fixed to the locking shaft 803 from top to bottom to ensure that the two can move synchronously with the locking shaft 803. The top of the locking shaft 803 has a hexagonal square head to facilitate the operator to use tools to rotate the locking shaft 803 and thus wind and tighten the fixing belt 4. Through the cooperation of the fixed column 10 and the winding column 11, the fast tightening and release of the fixing belt 4 is achieved. The rotational drive of the winding column 11 generates uniform radial pressure on the fixing belt 4, avoiding uneven stress caused by manual tightening. Compared with the direct clamping or hoisting methods in the prior art, this device uses circumferential wrapping fixation, which not only avoids scratching the surface of the bearing 6, but also achieves bidirectional axial and radial limiting. In particular, the limiting mechanism design of the winding column 11 can automatically maintain the compressed state after tightening, solving the problem of difficult manual operation in high-temperature environments. The setting of the guide column 9 further optimizes the direction of the fixing belt 4, preventing local stress concentration caused by belt twisting. The ratchet mechanism realizes the one-way self-locking function of the fixing belt 4 after tightening, preventing the fixing belt 4 from springing back due to the gravity or vibration of the bearing 6.Compared to existing technologies that rely solely on friction braking, the rigid engagement of the ratchet and pawl provides a more reliable limiting effect, while retaining the flexibility of manual adjustment through a controllable disengagement design. Specifically, during the heat fitting process of bearing 6, the operator can quickly lock the winding column 11 after tightening the fixing band 4, avoiding the risk of bearing 6 displacement due to accidental loosening, thus improving the stability and safety of the installation process.

[0044] In this embodiment, the retractable assembly 8 also includes a locking torsion spring 12, which is installed on the bottom surface of the winding column 11. The locking torsion spring 12 is a mechanical element that generates torsional torque through elastic deformation. One end of the spring is fixed to the bottom surface of the locking shaft 803, and the other end abuts against the surface of the fixing belt 4. The locking torsion spring 12 can provide a certain preload to the fixing belt 4 and the winding shaft to ensure that they do not loosen.

[0045] In this embodiment, the retaining assembly consists of at least two retaining members 5, which are symmetrically arranged. As shown in the figure, each retaining assembly has at least two retaining members 5, and each retaining member 5 has two stops 501, which are located on both sides of the bearing 6 along the axial direction. If there is only one retaining member 5 in a retaining assembly, the axial support of the bearing 6 will be uneven, and the bearing 6 will shift or tilt during the heat fitting process. However, the two retaining members 5 arranged symmetrically can provide symmetrical support on both sides of the bearing 6 along the axial direction, effectively preventing the bearing 6 from shifting or tilting during the heat fitting process.

[0046] In this embodiment, the fixed base 1 is also equipped with guide posts 9 for changing the direction of the fixed belt 4. Two guide posts 9 are provided, and they are arranged to avoid each other. The guide posts 9 guide the movement path of the fixed belt 4, preventing interference or friction between the fixed belt 4 and other components during tightening. The mutual avoidance arrangement of the two guide posts 9 ensures uniform force on the fixed belt 4 during tightening, avoiding localized stress concentration. The guide posts 9 can be cylindrical with a smooth surface to reduce frictional resistance. The installation position of the guide posts 9 can be adjusted according to the direction requirements of the fixed belt 4 to achieve the best guiding effect. The material of the guide posts 9 can be wear-resistant metal or engineering plastic to improve service life. Specifically, the guide posts 9 allow the fixed belt 4 to move more smoothly during tightening, avoiding jamming or wear caused by obstructed paths. The mutual avoidance arrangement of the two guide posts 9 further optimizes the movement trajectory of the fixed belt 4, ensuring that the clamping block 3 can move synchronously and evenly press the outer ring of the bearing 6. Compared with existing technologies, this solution not only improves the reliability of bearing 6 fixing, but also reduces the wear of fixing belt 4 and extends the service life of the device. Through the reasonable arrangement of guide columns 9, the tightening process of fixing belt 4 is smoother and the operation is more convenient, effectively solving the technical problem of poor movement of fixing belt 4 during the heat fitting of bearing 6.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A bearing heat sleeve device, characterized in that, include: A basic fixing assembly, comprising a fixed base, a movable base, and a clamping block, wherein each of the fixed base and the movable base is equipped with at least one clamping block, the clamping block being driven synchronously to move toward the radial center position of the bearing to press and hold against the radial outer surface of the bearing outer ring and limit the bearing in the radial direction of the bearing; The fixed base and the movable base are both equipped with a fixed stop assembly. The fixed stop assembly includes a fixed stop member, which includes two stops. The two stops are arranged parallel to each other along the axial direction of the bearing and are used to limit the bearing in the axial direction.

2. The bearing heat sleeve device according to claim 1, characterized in that: The basic fixing component also includes a fixing strap. One end of the fixing strap is fixedly connected to a set position of the fixing base, and the other end passes through the clamping block in sequence. After surrounding the bearing in the circumferential direction, it is wound around another set position of the fixing base. The fixing strap can be controlled to tighten to press against the radial outer surface of the bearing outer ring. The clamping block moves synchronously with the tightening of the fixing strap to press against and hold against the bearing outer ring.

3. The bearing heat-shrinking device according to claim 1, characterized in that: The fixing component also includes a handle, and the handle is detachably mounted on both the fixed base and the movable base.

4. The bearing heat-shrinking device according to claim 2, characterized in that: The clamping blocks include clamping block I, clamping block II, clamping block III and clamping block IV. Clamping block I and clamping block IV are respectively hinged to the fixed base, and clamping block II and clamping block III are respectively hinged to the movable base. The fixing strap passes through clamping block I, clamping block II, clamping block III and clamping block IV in sequence.

5. The bearing heat-shrinking device according to claim 1, characterized in that: The fixing component includes an adjusting rod. The two stops of the fixing component are mounted on a fixed base or a movable base via the adjusting rod. The axis of the adjusting rod is parallel to the axis of the bearing. The two stops are respectively mounted on both ends of the adjusting rod in a lockable manner that allows them to move axially along the adjusting rod.

6. A bearing heat-shrinking device according to claim 2, characterized in that: It also includes a fixed column and a retractable assembly. The retractable assembly includes a winding column. The fixed column is detachably installed at a set position on the fixed base. The winding column is installed at another set position on the fixed base in a way that allows it to rotate around its own axis in a limited manner. One end of the fixing strap is fixed to the fixed column, and the other end is fixedly connected to the winding column. The winding column can be driven to rotate to wind the fixing strap and tighten it.

7. A bearing heat-shrinking device according to claim 6, characterized in that: The retractable assembly also includes a limiting ratchet and a limiting pawl. The limiting ratchet is fixedly installed on the top of the winding column, and the limiting pawl is hinged to the fixed base and located near the limiting ratchet. The limiting pawl can be manipulated to swing and engage with the limiting ratchet to limit the rotation direction of the winding column, or the limiting pawl can be manipulated to swing and disengage from the limiting ratchet to release the limitation on the winding column.

8. A bearing heat-shrinking device according to claim 6, characterized in that: The retractable assembly also includes a locking torsion spring, which is mounted on the bottom surface of the winding column.

9. A bearing heat-shrinking device according to claim 1, characterized in that: The retaining assembly consists of at least two retaining members, which are arranged symmetrically.

10. A bearing heat-shrinking device according to claim 2, characterized in that: The fixed base is also equipped with guide posts for changing the direction of the fixed belt. There are two guide posts, which are arranged to avoid each other.

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