Rolling guide shoe suitable for added and transformed elevators

Abstract

The rolling guide shoe is applied to the technical field of elevator straight ladders and comprises a bottom plate, a support and a supporting plate and further comprises a first roller, a second roller and a third roller, the diameter of the first roller, the diameter of the second roller and the diameter of the third roller are smaller than 100 mm, the support is welded to the bottom plate, and the supporting plate is welded to the bottom plate. The middle of the support is concave inwards and connected with a supporting plate, and the supporting plate is welded to the center of the bottom plate. The seesaw connecting rod is installed on the supporting plate, the seesaw connecting rod is formed by connecting two seesaws through a connecting rod shaft, the two seesaws are used for enabling the first rolling wheel and the second rolling wheel to keep making contact with the guide rail face, and the third rolling wheel is installed between the two seesaws through a rolling wheel shaft; the plane where the third roller is located is located between the first roller and the second roller and is perpendicular to the planes of the first roller and the second roller. The size of the roller is reduced to adapt to the limited hoistway space of an additionally-installed and reformed elevator, the overall strength and rigidity of the guide shoe are enhanced, and therefore the installation space is saved.

Description

Technical Field

[0001] The present application relates to the technical field of elevators and staircases, and in particular to a rolling guide shoe suitable for retrofitting and modifying elevators. Background Art

[0002] With growing demand for elevators, retrofitting or adding elevators to older residential buildings has become a preferred option. However, the installation environment for retrofitting or adding elevators to existing buildings differs significantly from that of new elevators. While the hoistway dimensions and space requirements for new elevators can be factored into the building design, retrofitting elevators must be constructed within existing hoistways or building structures, and available hoistway space is very limited in older residential buildings. To ensure adequate space within the elevator car, the distance between the guide rails and the elevator shaft and the car is typically minimized. This arrangement places new demands on the elevator guide shoes. These are sliding nylon blocks between the guide rails and the car. They are fixed to the outside of the car and contact the guide rails, limiting their movement up and down along the rails. Each elevator car is equipped with four sets of guide shoes, mounted on either side of the upper beam and below the safety clamp seat at the bottom of the car. Rolling guide shoes are wheels that clamp onto the guide rails. They are generally used in elevators with speeds above 2 meters per second. They reduce friction, vibration, and noise during operation, improving passenger comfort.

[0003] Existing roller guide shoes typically feature independent connecting rods for mounting the rollers, and the roller diameter is typically greater than 100mm, making them too large for installation in retrofit and retrofit elevators. Therefore, there is a need to develop a small-diameter roller guide shoe suitable for retrofit and retrofit elevators. While reducing the roller size, the shoe structure should have sufficient strength and rigidity to compensate for the pressure and clearance variations between the small-diameter roller and the guide rail. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the present application proposes a rolling guide shoe suitable for retrofitting and modifying elevators, which saves installation space and increases installation flexibility.

[0005] In the first aspect, the present application provides a rolling guide shoe suitable for installation and renovation of elevators, including a base plate, a bracket and a support plate. The technical solution is as follows:

[0006] It also includes a first roller, a second roller and a third roller, wherein the diameters of the first roller, the second roller and the third roller are less than 100 mm;

[0007] The bracket is welded to the bottom plate, the middle position of the bracket is concave and connected to the support plate, and the support plate is welded to the center position of the bottom plate;

[0008] A rocker link, wherein the rocker link is mounted on the support plate, and the rocker link is composed of two rockers connected by a connecting rod shaft, and the two rockers are used to keep the first roller and the second roller in contact with the guide rail surface, and the third roller is mounted between the two rockers through the roller shaft, and the plane of the third roller is between the first roller and the second roller and perpendicular to the plane of the first roller and the second roller.

[0009] The rolling guide shoe provided in the present application is suitable for retrofitting and modifying elevators and has a smaller overall size, making it suitable for installation and use in narrow retrofitting and modifying elevator shafts. At the same time, through the design of structures such as a rocker link and a spring, the adjustment of the pressure and gap changes between the small-diameter roller and the guide rail is ensured. It has the advantages of a compact structure, small installation size, and is suitable for the installation environment of retrofitting and modifying elevators.

[0010] Furthermore, the present application also proposes that it further includes a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are fixed on the bracket at intervals.

[0011] This application provides a rolling guide shoe suitable for retrofitting and rebuilding elevators. The first and second connecting rods are fixed to a bracket, providing additional structural support. This design increases the stability of the rolling guide shoe, reduces swinging and vibration during operation, and thus improves the smoothness and safety of the elevator.

[0012] Furthermore, the present application also proposes that the first roller is fixed to the first connecting rod through a hexagonal nut, a spacer sleeve, and a roller shaft, and the second roller is fixed to the second connecting rod through a hexagonal nut, a spacer sleeve, and a roller shaft, and the first roller and the second roller are in the same plane.

[0013] This application provides a rolling guide shoe suitable for retrofitting and rebuilding elevators. The first and second rollers are fixed to the first and second connecting rods, respectively, so that they lie in the same plane. This design ensures the stability of the rollers and achieves balanced contact during the operation of the rolling guide shoe, thereby improving the overall stability and shock absorption performance of the guide shoe.

[0014] Furthermore, the present application also proposes that the diameters of the first roller, the second roller and the third roller are 60 mm.

[0015] The present application provides a rolling guide shoe suitable for retrofitting and renovating elevators, which can better adapt to different guide rail sizes and structures in various retrofitting and renovating elevators, ensure that the rolling guide shoe runs smoothly on the elevator guide rail, reduce vibration and noise, improve the stability and comfort of elevator operation, and ensure the overall operation effect.

[0016] Furthermore, the present application also proposes that the rocker link is fixed to the support plate by a rivet, and a first spring is sleeved on the rivet to adjust the movement of the third roller in the vertical direction.

[0017] The present application provides a rolling guide shoe suitable for installation and modification of elevators, which can provide elastic adjustment in the vertical direction, thereby ensuring that the third roller can effectively contact the guide rail, smoothly adjust the position of the third roller during the operation of the elevator, reduce vibration and deviation, and improve the stability and comfort of the elevator operation.

[0018] Furthermore, the present application also proposes that the first connecting rod and the second connecting rod are fixed to the bracket by a first bolt, a second bolt and a rotating shaft respectively.

[0019] Furthermore, the present application also proposes that the first bolt is used to limit the swing angle of the first connecting rod or the second connecting rod.

[0020] The present application provides a rolling guide shoe suitable for installation and modification of elevators. By limiting the swing angle of the connecting rod, the rolling guide shoe is ensured to be stable during the operation of the elevator car, and the first roller or the second roller is prevented from being unstable or damaged due to excessive swinging, thereby improving the operation safety and reliability of the elevator.

[0021] Furthermore, the present application also proposes that a second spring and a spring seat are sleeved on the second bolt to adjust the vibration generated when running on the guide rail.

[0022] The present application provides a rolling guide shoe suitable for installation and modification of elevators, which can effectively absorb and alleviate the vibration caused by uneven guide rails or other factors during the operation of the elevator, making the elevator car more stable during operation, reducing passenger discomfort and equipment wear, achieving real-time adjustment of vibrations, and enhancing the shock-absorbing performance of the rolling guide shoe, thereby improving the safety and comfort of elevator operation.

[0023] Furthermore, the present application also proposes that the rotating shaft is used to enable the first connecting rod or the second connecting rod to swing, thereby ensuring that the first roller or the second roller has a certain space for rebound.

[0024] The present application provides a rolling guide shoe suitable for adding and modifying elevators, which allows the first roller or the second roller to have a certain rebound space when affected by the unevenness of the guide rail or other external forces. This rebound space helps to alleviate the pressure between the guide shoe and the guide rail.

[0025] Furthermore, the present application also proposes that a guide shoe mounting hole is provided on the base plate, and the rolling guide shoe is fixed to the outside of the elevator car through the guide shoe mounting hole.

[0026] Beneficial effects: The present application provides a rolling guide shoe suitable for retrofitting and renovating elevators. The roller diameter should be reduced and the shoe body structure should be optimized, which can reduce the overall size of the rolling guide shoe, adapt to the installation space requirements of retrofitting and renovating elevators, make the fit between the rollers tighter, and effectively utilize the space. At the same time, it ensures the strength and rigidity of the rolling guide shoe and improves the installation flexibility of the roller guide shoe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a rolling guide shoe suitable for retrofitting and modifying elevators provided in this application.

[0028] Figure 2 A top view of a rolling guide shoe suitable for retrofitting and modifying elevators provided in this application.

[0029] Figure 3 A side perspective view of a rolling guide shoe suitable for retrofitting and renovating elevators provided in this application.

[0030] Figure 4 A rear perspective view of a rolling guide shoe suitable for retrofitting and renovating elevators provided in this application.

[0031] In the figure: 1. Base plate; 2. Bracket; 3. Support plate; 4. First connecting rod; 5. Second connecting rod; 6. First roller; 7. Second roller; 8. Third roller; 9. Rocker connecting rod; 10. First bolt; 11. Second bolt; 12. First spring; 13. Rotating shaft; 14. Guide shoe mounting hole; 15. Roller shaft. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] With the acceleration of urbanization and the aging of the population, installing elevators in existing buildings or renovating existing elevators has become a significant need. However, when installing or renovating elevators in existing buildings, the available hoistway space is often very limited. To ensure that the interior space of the elevator car meets usage requirements, it is usually necessary to minimize the distance between the guide rail sides and the elevator shaft and the car. In traditional elevator guide shoe designs, roller guide shoes typically use rollers with a diameter greater than 100mm, and the connecting rods used to mount the rollers are independent of each other. This design results in a large installation size, making it difficult to adapt to the narrow hoistway installation space requirements of elevator installations and renovations.

[0035] In order to solve this problem, the present application proposes a rolling guide shoe suitable for adding and modifying elevators, including a base plate 1, a bracket 2 and a support plate 3, and also including a first roller 6, a second roller 7 and a third roller 8. The diameters of the first roller 6, the second roller 7 and the third roller 8 are less than 100 mm; the bracket 2 is welded on the base plate 1, and the middle position of the bracket 2 is concave and connected to the support plate 3, and the support plate 3 is welded at the center position of the base plate 1; and a rocker link 9, the rocker link 9 is installed on the support plate 3, and the rocker link 9 is composed of two rockers connected by a connecting rod shaft. The two rockers are used to keep the first roller 6 and the second roller 7 in contact with the guide rail surface. The third roller 8 is installed between the two rockers through the roller shaft 15. The plane of the third roller 8 is between the first roller 6 and the second roller 7 and is perpendicular to the plane of the first roller 6 and the second roller 7.

[0036] Please refer to Figure 1 This rolling guide shoe, suitable for retrofitting and retrofitting elevators, utilizes first, second, and third rollers 6, 7, and 8 with diameters less than 100mm, significantly reducing the overall size of the shoe. The base plate 1, serving as the foundational support structure, is welded to the bracket 2. The center of the bracket 2 is connected to the support plate 3 using a recessed design to allow for the smooth passage of the raised portion of the T-shaped guide rail. The support plate 3 is welded to the center of the base plate 1, perpendicular to the bracket 2. This compact design further optimizes space utilization, enhances the shoe's structural strength and rigidity, and provides stability for elevator car operation.

[0037] See Figure 2 , Figure 2This is a top view of the rolling guide shoe of the present application, which is suitable for retrofitting and renovating elevators. An important innovation of the present application lies in the design of the rocker link 9, which consists of two rockers connected by a connecting rod shaft. This design enables the first roller 6 and the second roller 7 to maintain good contact with the guide rail surface. The third roller 8 is installed between the two rockers through the roller shaft 15. Its plane is located between the first roller 6 and the second roller 7 and is perpendicular to their planes. The three rollers correspond to the three surfaces of the T-shaped guide rail respectively. The rollers are attached to the guide rail surface and move up and down. During the operation of the elevator, the rollers may vibrate or deviate from the guide rail to varying degrees due to the start and stop of the elevator or the unevenness of the guide rail surface. Especially after reducing the size of the rollers, the outer diameter of the rollers also becomes smaller accordingly, and the adjustment ability for vibrations and deviations from the track during operation will also decrease accordingly. However, the present application By mounting the third roller 8 on a rocker link 9 located at the center of the base plate 1, with the plane of the rocker link 9 perpendicular to the planes of the first and second rollers 6 and 7, the third roller 8 is supported by the rocker link 9 to maintain contact with the guide rail surface as the guide shoe moves up and down along the guide rail. Simultaneously, the support plate 3 and bracket 2 are welded together, providing excellent support for fine-tuning the first and second rollers 6 and 7. This ensures that the first and second rollers 6 and 7, which are located on the same plane, always maintain contact with the guide rail surface, compensating for the reduced fine-tuning capability caused by the smaller size. This three-dimensional layout design not only saves space but also improves the stability and operational reliability of the guide shoe.

[0038] Compared with traditional roller guide shoes, the design of the present application has significant advantages. First, the application of small-diameter rollers greatly reduces the overall size of the guide shoes, making them more suitable for installation in narrow spaces. Secondly, the innovative design of the rocker link 9 ensures good contact between the rollers and the guide rails, improving operational stability. Finally, the compact structural design not only saves installation space, but also simplifies the installation and commissioning process, reduces maintenance costs, and is more suitable for more different types of elevator installation environments, further improving the installation flexibility of the guide shoes. In actual applications, the three rollers maintain stable contact with the guide rails to ensure smooth operation of the car. The design of the rocker link 9 can automatically adjust the pressure between the rollers and the guide rails, ensuring the adjustment of the pressure and gap changes between the small-diameter rollers and the guide rails, compensating for the unevenness of the guide rails, and improving operational comfort. The welded structure of the bracket 2 and the support plate 3 provides sufficient strength and rigidity to ensure the reliability of the guide shoes in long-term use.

[0039] In practical applications, this rolling guide shoe, suitable for elevator retrofits and retrofits, also includes a first connecting rod 4 and a second connecting rod 5, which are fixed to the bracket at intervals. By being fixed to the bracket 2, the first and second connecting rods 4 and 5 provide additional structural support. This design increases the stability of the rolling guide shoe and reduces oscillation and vibration during operation, thereby improving the smoothness and safety of elevator operation. Specifically, the spaced-apart fixing of the two connecting rods helps maintain the balance of the rolling guide shoe and prevents deviation or shaking caused by guide rail vibration. In this way, the rolling guide shoe can better meet the needs of elevator retrofits and retrofits, ensuring more stable and smooth elevator operation on the guide rails. The connecting rod design forms an integrated structure with other components, such as the bracket 2, base plate 1, and support plate 3. This integrated structure not only improves the stability of the guide shoe but also enhances its load-bearing capacity. For example, when the elevator car is subjected to lateral forces during operation, the spaced-apart connecting rod structure can better distribute the force and reduce the risk of guide shoe deformation. At the same time, this structure also provides a more stable installation base for the first roller 6 and the second roller 7, so that the rollers can always maintain close contact with the guide rail.

[0040] By adding a first connecting rod 4 and a second connecting rod 5, this application significantly enhances the structural support capacity of the rolling guide shoe, effectively reducing vibration and oscillation that may occur during operation. Compared with the existing technology, this design greatly improves the smoothness and safety of the elevator's operation on the guide rail, providing a more stable and reliable technical solution for retrofitting and retrofitting elevators. This innovation not only optimizes the guide shoe's structure but also simplifies the installation and maintenance process, making it more suitable for retrofitting and retrofitting elevators in existing buildings, reducing the localization of elevator installation, and enhancing the flexibility of rolling guide shoes with small-diameter rollers during the installation process of retrofitting and retrofitting elevators.

[0041] Furthermore, in some preferred embodiments, the first roller 6 is fixed to the first connecting rod 4 by a hexagonal nut, a spacer sleeve and a roller shaft 15, and the second roller 7 is fixed to the second connecting rod 5 by a hexagonal nut, a spacer sleeve and a roller shaft 15, and the first roller 6 and the second roller 7 are in the same plane.

[0042] This design ensures roller stability and achieves balanced contact during the operation of the rolling guide shoe, thereby improving the overall stability and shock absorption performance of the guide shoe. The design of fixing the first roller 6 and the second roller 7 in the same plane allows both rollers to maintain good contact with the guide rail surface simultaneously. This layout effectively distributes the load, preventing excessive pressure on a single roller, thereby extending the service life of the rollers and guide rail. At the same time, this design also improves the overall stability of the rolling guide shoe, reduces shaking and noise during elevator operation, and improves ride comfort.

[0043] Specifically, the first and second rollers 6 and 7 are precisely secured to the connecting rod using hexagonal nuts, with spacer sleeves ensuring stability and proper spacing between the rollers on the roller shaft 15. Furthermore, the roller shaft 15 can be made of high-strength materials to enhance the reliability of the entire guide shoe structure. This connecting rod connection allows for various variations, such as adjusting the size of the hexagonal nut and the length of the spacer sleeve to accommodate varying roller diameters, or using a precision-machined roller shaft 15 to enhance the overall durability of the guide shoe.

[0044] The hexagonal nut secures the roller in place on the connecting rod and engages the roller shaft 15 through its internal threads. A spacer sleeve is a ring-shaped component typically placed between the roller and the connecting rod to position and protect the roller. It may also help distribute pressure and reduce wear. The roller shaft 15 passes through the center of the roller and secures the roller to the connecting rod while allowing the roller to rotate about the axis. During installation, first insert the roller shaft 15 into the corresponding holes in the first and second connecting rods 4 and 5, ensuring that the shaft can pass through the connecting rods and that there is sufficient length for the roller to be installed. Then, place the spacer sleeve in the desired position on the connecting rod. The spacer sleeve will sit between the roller and the connecting rod, providing protection and positioning. Next, place the roller on the spacer sleeve, ensuring that the roller's center hole is aligned with the roller shaft 15. Finally, insert the roller shaft 15 through the roller's center hole to ensure that the roller can rotate freely. Finally, install a hexagonal nut at each end of the roller shaft 15 to secure the roller to the shaft.

[0045] The design of this application uses small-diameter rollers and a compact mounting structure to enable the guide shoe to adapt to the needs of a small installation space without the need for significant spatial adjustments. The combined fixing method of the hexagonal nut, the spacer sleeve, and the roller shaft 15 enhances the stability of the roller installation, allowing the first roller 6 and the second roller 7 to roll smoothly in the same plane, ensuring smooth operation. This structural design not only improves the stability and shock absorption performance of the guide shoe, but also effectively reduces the complexity of installation and maintenance, reducing the commissioning and maintenance costs during use. This design ensures the stability of the roller and achieves balanced contact during the operation of the rolling guide shoe, thereby improving the overall stability and shock absorption performance of the guide shoe.

[0046] Furthermore, the present application also proposes that the diameters of the first roller 6 , the second roller 7 and the third roller 8 are 60 mm.

[0047] The diameters of the first, second, and third rollers 6, 7, and 8 are designed to be 60 mm. This specific dimension has a significant impact on the performance and applicability of the rolling guide shoe. The 60 mm diameter provides the rollers with an appropriate contact area, ensuring good contact between the guide shoe and the guide rail while reducing friction and wear. This size is neither too large, thereby increasing the overall size and weight of the guide shoe, nor too small, thereby compromising the shoe's stability and load-bearing capacity. By setting the diameter of all three rollers to 60 mm, the design and manufacturing process of the guide shoe can be simplified, improving the versatility and interchangeability of the components. This design helps reduce production costs while facilitating subsequent maintenance and replacement. The selection of a 60 mm roller diameter also takes into account the special needs of retrofit and modified elevators. This size accommodates confined installation spaces while providing sufficient load-bearing capacity and operational stability to meet the requirements for safe elevator operation.

[0048] In practical applications, a 60mm diameter roller can be achieved in a variety of ways. For example, a precision-machined metal roller can be used, and the surface is hardened to improve wear resistance. Another way is to use high-performance engineering plastics to make the roller, such as polyurethane or nylon materials, which have good wear resistance and shock absorption properties. The surface of the roller can be designed to be smooth or have fine lines to optimize the contact characteristics with the guide rail. In some embodiments, the three rollers are all composed of polyurethane wrapped around the roller hub and the outside of the hub circle, and a bearing sleeve. Polyurethane as a wear-resistant material for the roller can greatly improve the wear resistance and oil resistance of the roller. Rollers of this size can provide sufficient support force in a limited space while ensuring the stability of the overall structure of the guide shoe. The uniform roller diameter helps to simplify the installation and adjustment process, allowing the first roller 6, the second roller 7 and the third roller 8 to work better together and jointly bear the load and guiding function of the guide shoe.

[0049] This design not only ensures the performance of the guide shoe, but also effectively reduces friction and wear. It can evenly distribute pressure during operation, avoid local wear, and extend the service life of the guide shoe. In addition, rollers of this size also have good load-bearing capacity, which can meet the requirements for safe operation of the elevator and ensure a smooth riding experience. Through this specific diameter roller design, the present application significantly improves the contact effect between the guide shoe and the guide rail, thereby reducing vibration and noise. This not only improves the comfort of elevator operation, but also extends the service life of the equipment. Compared with the existing technology, the present application shows higher adaptability and reliability during elevator installation and modification.

[0050] Furthermore, the 60mm diameter roller, combined with the rocker link 9, achieves a more flexible guiding effect. During elevator operation, a roller of this size can quickly respond to subtle changes in the guide rail surface, maintaining stable contact pressure and thus reducing vibration and noise. The 60mm diameter design plays a key role in determining roller size for rolling guide shoes suitable for retrofit and retrofit elevators. First, this size accommodates confined installation spaces, a choice made with the limited hoistway space in retrofit and retrofit elevators in mind. Second, the 60mm diameter provides sufficient contact area for the roller, ensuring good contact between the guide shoe and the guide rail, while also being sufficiently large to increase overall weight and volume. Traditional rolling guide shoes typically use rollers with diameters of 100mm or more. While this large contact area results in excessive overall size, it is unsuitable for use in retrofit and retrofit elevators, where space is limited. The 60mm diameter roller design of this application significantly reduces the overall size of the guide shoe while maintaining performance, improving space utilization. Furthermore, compared to conventional sliding guide shoes, the rolling design of this application significantly reduces operating resistance and wear, improving elevator energy efficiency and component life. The 60mm diameter strikes an optimal balance between rolling performance and space constraints, demonstrating the innovation and practicality of this application in addressing the specialized needs of retrofit and retrofit elevators.

[0051] Furthermore, the rocker link 9 is fixed to the support plate 3 by means of a rivet, and a first spring 12 is sleeved on the rivet to adjust the movement of the third roller 8 in the vertical direction.

[0052] The first spring 12 is mounted on the rivet, providing elastic support for the rocker link 9. This design allows the third roller 8 to adjust vertically to a certain degree. The rocker link 9, combined with the base plate 1, bracket 2, and support plate 3, forms a complete rolling guide shoe system. The rocker link 9 ensures that the first and second rollers 6 and 7 maintain effective contact with the guide rail surface, while the third roller 8 achieves vertical adjustment through this structure. This combined design not only improves the overall stability of the rolling guide shoe but also enhances its adaptability to guide rail variations. During elevator operation, if the guide rail surface becomes uneven or slightly deformed, the third roller 8 can adjust vertically by compressing or extending the first spring 12. This adjustment process is automatic and continuous, requiring no manual intervention. When a convex surface appears on the guide rail, the first spring 12 compresses to absorb the impact; when a concave surface appears, the first spring 12 extends to maintain contact between the third roller 8 and the guide rail.

[0053] This adjustment capability effectively reduces vibration and noise during elevator operation, improving ride comfort. It also enhances the rolling guide shoe's adaptability to varying guide rail conditions, making it more suitable for retrofits and retrofits. Furthermore, this design offers a degree of adaptability. If the guide rail becomes slightly worn or deformed, the rolling guide shoe automatically adapts through this adjustment mechanism, extending its service life and reducing the frequency of maintenance and replacement.

[0054] See Figure 3 and Figure 4 , respectively, are side and rear perspective views of a rolling guide shoe suitable for retrofitting and retrofitting elevators, as provided herein. By securing the first connecting rod 4 and the second connecting rod 5 to the bracket 2 via a first bolt 10, a second bolt 11, and a rotating shaft 13, respectively, multiple connection points are employed, resulting in advantages such as improved stability, ease of adjustment, flexibility, and shock absorption. This securing method ensures that the rolling guide shoe maintains stability during elevator operation while maintaining a certain degree of flexibility, adapting to various operating conditions and improving elevator safety and comfort.

[0055] The first bolt 10 can be secured by providing a limiting structure (such as a limiting groove or a limiting block) on the bracket 2. When tightened, the first bolt 10 secures the connecting rod in a defined position, limiting its swing angle. This ensures that the connecting rod can swing only within a safe range, preventing excessive swing from causing the roller to disengage from the guide rail. The second bolt 11 is connected to a spring assembly. During elevator operation, vibrations generated by the roller contacting the guide rail are transmitted to the second bolt 11 through the connecting rod. The spring on the second bolt 11 absorbs this vibration, thus adjusting the vibration. The rotating shaft 13 is a key component in enabling the connecting rod to swing. The rotating shaft 13 passes through the bracket 2 and the connecting rod, allowing the connecting rod to rotate about the rotating shaft. As the elevator car moves along the guide rail, the rotating shaft 13 allows the connecting rod to flexibly adapt to subtle changes in the guide rail, such as unevenness or curvature. This design ensures that the roller always maintains good contact with the guide rail, improving the smoothness and safety of elevator operation.

[0056] After the first connecting rod 4 and the second connecting rod 5 are fixed in this way, they can form an integral structure with the first roller 6 and the second roller 7. This structure allows the rollers to maintain stability while having a certain degree of adaptability. When the guide rail encounters slight unevenness or deformation during the operation of the elevator, the connecting rod can make a slight rotation through the rotating shaft to keep the rollers in good contact with the guide rail, thereby ensuring smooth operation. Compared with the existing technology, this fixing method of the present application has obvious advantages. Traditional rolling guide shoes usually adopt a single-point fixation or a simple hinged method. This method is prone to loosening or wear after long-term use, affecting the stability of the guide shoe. The multi-point fixing method adopted in the present application not only improves the firmness of the connection, but also provides the necessary flexibility through the design of the rotating shaft 13. This design is particularly suitable for installation and renovation of elevators, because the guide rail conditions of such elevators are usually not as ideal as those of newly installed elevators, and the guide shoes need to have better adaptability and stability.

[0057] Furthermore, in some preferred embodiments, the first bolt 10 is used to limit the swing angle of the first connecting rod 4 or the second connecting rod 5. The first bolt 10 plays a key role in limiting the swing angle of the first connecting rod 4 or the second connecting rod 5. By providing the first bolt 10, the swing range of the connecting rod can be effectively controlled to prevent the connecting rod from swinging excessively, causing the roller to detach from the guide rail or causing unnecessary collisions. This design not only ensures good contact between the roller and the guide rail, but also avoids safety hazards that may be caused by excessive swinging. This design not only improves the stability and reliability of the rolling guide shoe, but also enhances its adaptability and can be applied to different types of installation and modification of elevators. At the same time, the characteristics of this simple structure and easy maintenance and adjustment are also conducive to reducing the maintenance cost of the elevator and improving operating efficiency.

[0058] There are also multiple options for the interaction between the first bolt 10 and the first connecting rod 4 or the second connecting rod 5. The most direct way is to have the bolt directly contact the connecting rod. When the connecting rod swings to a certain angle, it will hit the bolt and cannot continue to swing. Another way is to set a limit block or protrusion on the connecting rod. These structures will contact the first bolt when the connecting rod swings, thereby limiting the swing angle. In order to control the swing angle more accurately, consider using an adjustment mechanism with a scale. For example, an angle scale can be engraved on the bracket and used in conjunction with an adjustable bolt seat. In this way, the currently set limit angle can be intuitively seen during installation and adjustment.

[0059] In specific applications, the limiting effect of the first bolt 10 ensures that this vibration adjustment is carried out within a safe range, preventing instability caused by over-adjustment. When using the technical solution of the present application to solve the problem of how to limit the swing angle of the first connecting rod 4 or the second connecting rod 5 to ensure the stability and safety of the rolling guide shoe during elevator operation, the first bolt 10 plays a key role. By adjusting the position of the first bolt 10, the maximum swing angle of the connecting rod can be precisely controlled. This control directly affects the contact state between the roller and the guide rail, preventing the roller from detaching from the guide rail or causing unnecessary collisions due to excessive swing of the connecting rod. This design ensures both the flexibility and stability of the rolling guide shoe.

[0060] Furthermore, the adjustability of the first bolt 10 allows the rolling guide shoe to adapt to different types of elevator installations and modifications. The performance of the rolling guide shoe can be optimized for varying elevator shaft dimensions and guide rail conditions by adjusting the position of the first bolt 10, significantly enhancing the product's applicability and practicality. The technical solution of this application significantly improves the stability and safety of the rolling guide shoe through a simple yet effective positioning mechanism for the first bolt 10. This design also facilitates maintenance and adjustment, helping to reduce elevator maintenance costs and improve operational efficiency.

[0061] Furthermore, in some preferred embodiments, a second spring and a spring seat are sleeved on the second bolt 11 to adjust the vibration generated when running on the guide rail.

[0062] The second spring and spring seat mounted on the second bolt 11 act as a shock absorber. When an elevator guide shoe runs on a guide rail, some vibration is inevitable. The second spring deforms according to the intensity of the vibration, providing a buffering effect. Small vibrations are directly absorbed by the spring, while larger vibrations cause the spring to compress or stretch more, dissipating most of the vibration energy. The spring seat provides support and positioning for the second spring, ensuring that the spring remains in the correct position during operation, preventing lateral deviation or twisting, ensuring stable operation, and ensuring the stability and durability of the shock absorption effect. By installing this shock absorber on the second bolt 11, the vibration generated by the guide shoe during operation can be effectively adjusted and reduced. This design improves elevator operation smoothness, reduces vibration felt by passengers, and thus enhances ride comfort. Furthermore, reducing vibration helps reduce wear on the guide shoe and guide rail, extending component life. This relatively simple yet effective shock absorption design is particularly suitable for retrofits and retrofits. It effectively improves elevator operation quality without requiring significant modifications to the existing structure, making it an economical and practical technical solution.

[0063] The connection method of the second bolt 11 to the first connecting rod 4 or the second connecting rod 5 can be various. For example, a threaded hole can be provided on the connecting rod, and the second bolt 11 can be directly screwed into the threaded hole; or a through hole can be provided on the connecting rod, and the second bolt 11 is fixed with a nut after passing through the through hole. This flexible connection method makes installation and adjustment more convenient. The preload of the second spring 11 can be achieved by adjusting the screw-in depth of the second bolt 11. Generally, the preload can be set between 10% and 30% of the free length of the spring to obtain the best shock absorption effect. The design of the spring seat can include a groove or protrusion for positioning the spring to prevent the spring from shifting during operation.

[0064] The shock absorbing device of the present application is used in conjunction with the rocker link 9, the first roller 6 and the second roller 7 to form a complete shock absorbing system. When the elevator encounters unevenness or sudden changes in the guide rail during operation, the first roller 6 and the second roller 7 first absorb part of the impact, the rocker link 9 can adjust the position of the rollers, and the second spring 11 further absorbs the remaining vibration. The three work together to greatly improve the shock absorbing effect of the guide shoe. In practical applications, the shock absorbing device of the present application is not only applicable to the first link 4 and the second link 5, but can also be applied to other connection parts that may generate vibration as needed. For example, a similar shock absorbing device can be added to the connection between the bracket 2 and the base plate 1 to further improve the shock absorbing performance of the entire guide shoe system.

[0065] Through this design, the present application effectively addresses the vibration issues associated with elevator operation. Compared to traditional rigid connections, this elastic connection method is more adaptable to the various dynamic changes during elevator operation. It not only improves passenger comfort but also reduces wear on elevator components, extending the service life of the equipment. This is particularly true for retrofit and renovation elevators, where the limitations of existing building structures often make it difficult to employ large or complex vibration reduction systems. The simple yet effective vibration reduction solution provided by this application precisely meets the specific needs of these types of elevators.

[0066] Furthermore, in some preferred embodiments, the rotating shaft 13 is used to enable the first connecting rod 4 or the second connecting rod 5 to swing, thereby ensuring that the first roller 6 or the second roller 7 has a certain space for rebound.

[0067] This design allows the roller to maintain a certain degree of flexibility when in contact with the guide rail. If the guide rail surface has minor unevenness or slight vibrations occur during elevator operation, the roller can use this rebound space to fine-tune, maintaining consistent contact with the guide rail. This not only improves elevator operation smoothness but also reduces wear between the roller and the guide rail, extending component life. Furthermore, this design is particularly suitable for retrofits and retrofits. In such elevators, the existing guide rail system may have minor deviations or irregularities. By providing this rebound space, the guide shoe system can better adapt to these existing conditions, ensuring safe and smooth elevator operation.

[0068] In the present application, the design of the rotating shaft 13 can be implemented in a variety of ways. One common way is to use a cylindrical rotating shaft, which can be connected to the first connecting rod 4 or the second connecting rod 5 through a bearing or a bushing, allowing the connecting rod to rotate freely around the rotating shaft 13. Another way is to use an eccentric shaft design, which can provide a larger adjustment range. The material of the rotating shaft 13 can be selected from high-strength alloy steel to ensure that it has sufficient strength and wear resistance. There are also multiple options for the connection method between the rotating shaft 13 and the first connecting rod 4 or the second connecting rod 5. For example, a key connection, a threaded connection or an interference fit can be used. These different connection methods can be selected according to the specific application scenario and load requirements.

[0069] The design of the rotating shaft 13 forms a complete adjustment system together with the first bolt 10 and the second bolt 11 mentioned above. The first bolt 10 is used to limit the swing angle of the connecting rod, while the spring and spring seat mounted on the second bolt 11 are used to adjust the vibration during operation. These three components work together to not only provide rebound space, but also accurately control the amplitude of the rebound and the absorption of vibration. In practical applications, the technical solution of the present application can effectively solve the problem of contact between the guide shoe and the guide rail in retrofitted and modified elevators. When the elevator is running, if it encounters a slight unevenness on the surface of the guide rail, the first roller 6 or the second roller 7 will adapt to this change by swinging the rotating shaft 13. At the same time, the spring system on the second bolt 11 will absorb part of the vibration, further improving the smoothness of operation. The first bolt 10 ensures that the swing does not exceed the safety range, thereby ensuring the stability of the entire system.

[0070] By using the guide shoe system of this application, the elevator can maintain smooth operation even if there are certain irregularities in the guide rails. In addition, due to the rebound mechanism of this design, even if the guide rails are slightly deformed after long-term use, the guide shoe system can adapt to this change, extending the service life of the entire system and significantly improving the system's adaptability and reliability. At the same time, due to the use of small-diameter rollers and a compact structural design, the guide shoe system of this application is more suitable for use in space-constrained situations, which is a major challenge faced by many elevator installation and renovation projects.

[0071] Furthermore, in some preferred embodiments, a guide shoe mounting hole 14 is provided on the base plate 1 , and the rolling guide shoe is fixed to the outside of the elevator car through the guide shoe mounting hole 14 .

[0072] The guide shoe mounting hole 14 provides a fixing point for the rolling guide shoe, so that the rolling guide shoe can be firmly mounted on the outside of the elevator car. This design makes the installation of the rolling guide shoe simple and reliable. By providing the guide shoe mounting holes 14 on the base plate 1 and using these holes to fix the rolling guide shoe to the outside of the elevator car, the design of the guide shoe mounting holes 14 can be implemented in a variety of ways. For example, a plurality of circular or elliptical mounting holes can be provided on the base plate 1. The diameters of these holes can be determined according to the size of the specific fixing bolts or screws. Another way is to design a long strip mounting groove. This design can provide a larger adjustment space and facilitate fine-tuning during installation. The number and distribution of the mounting holes is also an important consideration. A mounting hole can be provided at each of the four corners of the base plate 1 to ensure the stability of the fixation.

[0073] This design interacts positively with other features of the present application. For example, the base plate 1, as the basic component of the rolling guide shoe, not only provides a mounting point, but also forms a stable overall structure with the bracket 2 and the support plate 3. The provision of the guide shoe mounting hole 14 enables the entire rolling guide shoe system to better adapt to the structure of the elevator car, while also providing a stable foundation for the first roller 6, the second roller 7 and the third roller 8, enabling them to better play a guiding and supporting role. The design of the present application can be directly connected to the elevator car through preset mounting holes, reducing the workload and potential structural changes during installation. This not only saves installation time, but also reduces the difficulty of installation, making the installation of rolling guide shoes for retrofitted and modified elevators more convenient and efficient.

[0074] This application focuses on developing a small-diameter rolling guide shoe suitable for retrofit and conversion elevators, ensuring sufficient strength and rigidity while reducing roller size to accommodate limited hoistway space. The invention utilizes a first roller 6, a second roller 7, and a third roller 8 with diameters of preferably 60 mm. A bracket 2 is welded to a base plate 1, with the middle portion of the bracket 2 being concavely connected to a support plate 3, which is welded to the center of the base plate 1. The invention also includes a rocker link 9 mounted on the support plate 3. The rocker link 9 comprises two rockers connected by a connecting rod shaft. The two rockers are used to maintain contact between the first roller 6 and the second roller 7 and the guide rail surface. The third roller 8 is mounted between the two rockers via a roller shaft 15. The third roller 8 is located in a plane between and perpendicular to the planes of the first and second rollers 6 and 7. By reducing the roller size, the invention adapts to the limited hoistway space of retrofit and conversion elevators. The structural design of the base plate 1, bracket 2 and support plate 3 enhances the overall strength and rigidity of the guide shoe, compensating for the lack of stability that may be caused by small-diameter rollers. In addition, the design of the rocker link 9 cleverly connects the three rollers together to form a compact and flexible structure. The two rockers ensure that the first roller 6 and the second roller 7 maintain contact with the guide rail surface. This design not only solves the problem of space limitations, but also ensures the performance of the guide shoe through structural optimization. The configuration of three small-diameter rollers can better adapt to the unevenness of the guide rail surface and reduce vibration and noise during operation. At the same time, the design of the rocker link 9 allows the rollers to automatically adjust their position within a certain range to adapt to slight deformations or installation errors of the guide rail, thereby improving the smoothness and comfort of the elevator operation. The present application not only enhances the stability of the overall structure and saves installation space, but also optimizes the force transmission path, further improving the load-bearing capacity and service life of the guide shoe.

[0075] In summary, the design of this rolling guide shoe innovatively solves the space limitation problem faced by retrofitted and modified elevators. At the same time, the performance and stability of the guide shoe are guaranteed through ingenious structural design, reflecting the technological innovation of achieving functional optimization within a limited space.

[0076] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Persons skilled in the art will readily appreciate that the present application may be modified and altered in various ways. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A rolling guide shoe suitable for installation and renovation of elevators, comprising a base plate, a bracket and a support plate, characterized in that: Also includes: a first roller, a second roller and a third roller, wherein the diameters of the first roller, the second roller and the third roller are less than 100 mm; The bracket is welded to the bottom plate, the middle position of the bracket is concave and connected to the support plate, and the support plate is welded to the center position of the bottom plate; A rocker link, wherein the rocker link is mounted on the support plate, and the rocker link is composed of two rockers connected by a connecting rod shaft, and the two rockers are used to keep the first roller and the second roller in contact with the guide rail surface, and the third roller is mounted between the two rockers through the roller shaft, and the plane of the third roller is between the first roller and the second roller and perpendicular to the plane of the first roller and the second roller.

2. A rolling guide shoe suitable for retrofitting and renovating elevators according to claim 1, characterized in that: The bracket further comprises a first connecting rod and a second connecting rod, wherein the first connecting rod and the second connecting rod are fixed on the bracket at intervals.

3. The rolling guide shoe suitable for retrofitting and renovating elevators according to claim 2, characterized in that: The first roller is fixed to the first connecting rod through a hexagonal nut, a spacer sleeve, and a roller shaft. The second roller is fixed to the second connecting rod through a hexagonal nut, a spacer sleeve, and a roller shaft. The first roller and the second roller are in the same plane.

4. The rolling guide shoe for retrofitting and renovating elevators according to claim 3, characterized in that: The diameters of the first roller, the second roller and the third roller are 60 mm.

5. The rolling guide shoe suitable for retrofitting and renovating elevators according to claim 1, characterized in that: The rocker link is fixed to the support plate through a rivet, and a first spring is sleeved on the rivet to adjust the movement of the third roller in the vertical direction.

6. The rolling guide shoe suitable for retrofitting and renovating elevators according to claim 2, characterized in that: The first connecting rod and the second connecting rod are respectively fixed to the bracket by a first bolt, a second bolt and a rotating shaft.

7. The rolling guide shoe suitable for retrofitting and renovating elevators according to claim 6, characterized in that: The first bolt is used to limit the swing angle of the first connecting rod or the second connecting rod.

8. The rolling guide shoe suitable for retrofitting and renovating elevators according to claim 7, characterized in that: A second spring and a spring seat are sleeved on the second bolt to adjust the vibration generated when the vehicle runs on the guide rail.

9. The rolling guide shoe suitable for retrofitting and renovating elevators according to claim 8, characterized in that: The rotating shaft is used to enable the first connecting rod or the second connecting rod to swing, thereby ensuring that the first roller or the second roller has a certain space to rebound.

10. The rolling guide shoe suitable for retrofitting and rebuilding elevators according to claim 1, characterized in that: The bottom plate is provided with a guide shoe mounting hole, and the rolling guide shoe is fixed to the outside of the elevator car through the guide shoe mounting hole.

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