Semi-elastic roller guide shoe

Abstract

The invention discloses a semi-elastic roller guide shoe which comprises a guide shoe frame, two fixed roller assemblies, a movable roller assembly and mounting bolts. The guide shoe frame comprises a bottom plate and a welding nut; the bottom plate is fixedly connected with stand columns on the side face of the lift car through the mounting bolts. The fixed roller assembly comprises a side roller, a side wheel shaft and a shaft check ring; the movable roller assembly comprises a front roller, a fixed support, a movable support, a connecting shaft, a shaft check ring, a front wheel shaft assembly and an elastic assembly. The movable bracket is rotatably arranged on the fixed bracket through a connecting shaft; the front roller is rotatably fixed on the front wheel shaft assembly, and the front wheel shaft assembly penetrates through a through hole formed in the movable bracket, so that the arrangement direction of the front roller penetrates through the center of the distance between the two groups of side rollers; one side of the elastic assembly abuts against the back face of the bottom plate, the other side of the elastic assembly abuts against the movable support, and force applied by the elastic assembly to the movable support enables the front face roller to rotate around the connecting shaft to the front face of the bottom plate.

Description

Technical Field

[0001] This invention belongs to the field of elevator technology, specifically relating to a semi-elastic roller guide shoe. Background Technology

[0002] As a crucial guiding component in elevators, guide shoes are a key factor affecting elevator ride comfort, and their structure determines the ease of installation and space utilization. Current elevator guide shoes typically cannot balance performance and space utilization: guide shoes with excellent vibration and noise reduction capabilities are usually more complex and larger, requiring more installation space; guide shoes with simpler structures and less installation space usually sacrifice some performance.

[0003] The technical solution disclosed in Chinese Patent Document 1 (CN211521286U) eliminates the elastic components on the two side rollers, and only sets the elastic component on the front roller of the guide shoe, thereby reducing the volume of the roller guide shoe. However, it has the following problems:

[0004] 1) When working, the shoe seat is perpendicular to the working surface of the guide rail. The guide shoe can only be installed at the top and bottom of the car. It occupies part of the elevator space in terms of height, and has certain requirements on the height of the pit and the top floor, which affects the civil engineering capacity of the whole elevator.

[0005] 2) When the elastic roller guide shoe is correctly installed, the spring needs to be pre-compressed to a certain length to ensure that the roller is always in effective contact with the guide rail during elevator operation. Because this guide shoe lacks a spring pre-compression device, the spring needs to be manually compressed during installation, making it difficult to adjust the guide shoe position and accurately control the spring pre-compression.

[0006] In the technical solution disclosed in Chinese Patent Document 2 (CN210973463U), the guide shoe is installed on the side of the car, the front of the guide shoe adopts a sliding friction liner, and the side of the guide shoe adopts two sets of rollers. The structure is simple and saves space at the top and bottom of the elevator. However, it has the following problems:

[0007] 1) The guide shoe front is made of sliding shoe liner, which is suitable for elevators with low rated speed. As the elevator speed increases, the vibration noise and ride comfort of the sliding shoe liner are not good.

[0008] 2) Without a stop guard plate, the car is limited only by rollers and sliding shoe liners. If the rollers or axles fail, the car may detach from the guide rail. Summary of the Invention

[0009] To solve the above-mentioned technical problems, the present invention provides a semi-elastic roller guide shoe, including a guide shoe frame, two fixed roller assemblies, a movable roller assembly, and mounting bolts;

[0010] The guide shoe frame includes a base plate and welding nuts; the mounting bolts fix the base plate to the uprights on the side of the car.

[0011] The fixed roller assembly includes a side roller, a side axle, and a retaining ring for the axle; the side axle is vertically fixed to the front of the base plate; the side roller is rotatably fixed to the side axle by the retaining ring for the axle.

[0012] The movable roller assembly includes a front roller, a fixed bracket, a movable bracket, a connecting shaft, a retaining ring for the shaft, a front wheel axle assembly, and an elastic component; the base plate has a through hole through which the front roller can pass.

[0013] The fixed bracket is fixedly connected to the back of the base plate; the movable bracket is rotatably mounted on the fixed bracket via a connecting shaft; the connecting shaft has a bayonet near its two ends, and a retaining ring is fitted in the bayonet; the front roller is rotatably fixed on the front wheel axle assembly, and the front wheel axle assembly passes through a through hole provided on the movable bracket, so that the direction of the front roller passes through the center of the distance between the two sets of side rollers.

[0014] The elastic component is disposed on the upper part of the movable support; one side of the elastic component abuts against the back of the base plate, and the other side abuts against the movable support. The force applied by the elastic component to the movable support causes the front roller to rotate around the connecting axis on the front of the base plate.

[0015] Preferably, the elastic component includes a spring and a bolt; the bolt passes through the spring and is screwed into a welded nut, positioning the spring between the back of the base plate and the movable bracket.

[0016] Preferably, the movable roller assembly further includes a spring pre-compression device; the other end of the movable roller is fixedly connected to the base plate through a threaded hole in the base plate, and is used to pre-compress the spring to set the initial position of the front roller during installation.

[0017] Preferably, the movable roller assembly further includes a limiting device; the limiting device adjustably penetrates the movable bracket to limit the rotation angle of the movable bracket.

[0018] Preferably, the guide shoe frame further includes a protective plate; the protective plate is vertically disposed at the lower end of the base plate; the protective plate has a slot, the projection of the slot in the height direction of which accommodates the gap formed between the side roller and the front roller.

[0019] Compared with the prior art, the present invention basically and preferably has the following technical effects:

[0020] 1) The guide shoes are installed on the side of the car column, which saves space at the top and bottom of the elevator and improves the civil engineering capacity of the whole elevator.

[0021] 2) The spring pre-compression device facilitates installation and operation, eliminating the need for installers to manually compress the spring and accurately controlling the initial positive pressure of the roller.

[0022] 3) The roller assembly, compared to the sliding shoe liner, exhibits better vibration noise and ride comfort when the elevator is running at higher speeds.

[0023] 4) Limiting guards can prevent the car from detaching from the guide rail due to roller or axle failure, thus improving the overall safety of the elevator. Attached Figure Description

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Figure 1 This is a schematic diagram of the front structure of the semi-elastic roller guide shoe in Example 1;

[0026] Figure 2 This is a schematic diagram of the back structure of the semi-elastic roller guide shoe in Example 1. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0028] Example 1

[0029] like Figure 1 and Figure 2 As shown, this embodiment provides a semi-elastic roller guide shoe, including a guide shoe frame 1, two fixed roller assemblies 2, a movable roller assembly 3, and mounting bolts 4.

[0030] The guide shoe frame 1 includes a base plate 11, a protective plate 12, and a weld nut 13. The protective plate 12 is vertically disposed at the lower end of the base plate 11 and is connected to the base plate 11 by welding. The base plate 11 has holes for inserting the side axle 22 and holes for inserting bolts 372. The weld nut 13 is connected to the side of the base plate 11 away from the protective plate 12 by welding and is concentric with the holes for inserting bolts 372. The base plate 11 has through holes through which the front roller 31 can pass.

[0031] The fixed roller assembly 2 comprises a side roller 21, a side axle 22, and a retaining ring 23. The side axle 22 is vertically mounted on the base plate 11. The side axle 22 is inserted into the base plate 11 and then fixedly connected to the front of the base plate 11 by welding. The inner ring of the bearing of the side roller 21 is sleeved on the side axle 22. A retaining ring 23 is provided on the side of the side axle 22 near its end, and the retaining ring 23 is sleeved in the retaining ring. The retaining ring 23 fits against the bearing end of the side roller 21 to limit the movement of the side roller 21.

[0032] The movable roller assembly 3 comprises a front roller 31, a fixed bracket 32, a movable bracket 33, a connecting shaft 34, a shaft retaining ring 35, a front wheel axle assembly 36, an elastic component 37, a spring pre-compression device 38, and a limiting device 39. The fixed bracket 32 ​​is welded to the base plate 11. The movable bracket 33 is rotatably mounted on the fixed bracket 32 ​​via the connecting shaft 34 passing through it. The connecting shaft 34 has slots near its two ends, and the shaft retaining ring 35 is fitted into these slots to prevent the connecting shaft 34 from dislodging from the fixed bracket 32 ​​and the movable bracket 33. The inner bearing ring of the front roller 31 is fitted onto the front wheel axle assembly 36, which passes through a through hole in the movable bracket 33, allowing the front roller 31 to penetrate the center of the distance between the two sets of side rollers 21. The movable bracket 33 is equipped with an elastic component 37. The elastic component 37 is disposed on the upper part of the movable bracket 33; one side of the elastic component 37 abuts against the back of the base plate 11 and the other side abuts against the movable bracket 23. The force applied by the elastic component 37 to the movable bracket 23 causes the front roller 31 to rotate around the connecting shaft 34 toward the front of the base plate 11.

[0033] The elastic component 37 includes a spring 371 and a bolt 372. The bolt 372 movably penetrates the movable bracket 33, with its other end fixedly connected to the base plate 11; the spring 371 is fitted onto the bolt 372. A spring pre-compression device 38 is provided on the movable bracket 33, movably penetrating the movable bracket 33, with its other end fixedly connected to the base plate 11 through a threaded hole, used to pre-compress the spring 371 and set the initial position of the front roller 31 during installation. A limiting device 39 is provided on the movable bracket 33, adjustablely penetrating the movable bracket 33, with one end of the limiting device 39 movably contacting the base plate 11.

[0034] During guide shoe installation, the mounting bolts 4 are passed through the mounting holes on the guide shoe frame 1 to secure the guide shoe to the uprights on the side of the car. The space formed between the side roller 21 and the front roller 31 is a notch for accommodating the guide rail. The side roller 21 and the front roller 31 respectively fit against the working surface of the guide rail, allowing the guide shoe to move up and down along the guide rail. After installation, the spring pre-compression device 38 is removed, allowing the front roller 31 to effectively fit against the working surface of the guide rail and generate a preset positive pressure on the working surface of the guide rail.

[0035] During elevator operation, the side rollers 21 and front rollers 31 roll vertically relative to the guide rails. The front roller 31 reciprocates relative to the guide shoe frame 1 via the elastic component 37. To prevent excessive spring compression, a limiting device 39 is provided to restrict the rotation angle of the movable support 33; that is, when the limiting device 39 contacts the bottom plate 11, the movable support 33 cannot continue to rotate. If the guide shoe rollers or axles fail or break during elevator operation, the slots on the guard plate 12 prevent the car from detaching from the guide rails. The projection of these slots in the height direction accommodates the gap formed between the side rollers 21 and the front rollers 31, thus providing a safety guarantee.

[0036] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A semi-elastic roller shoe, characterized in that, The guide shoe frame, two fixed roller assemblies, a movable roller assembly and mounting bolts are included. The guide shoe frame includes a bottom plate and a welded nut; the mounting bolts are used to fix the bottom plate with the vertical column of the car side. The fixed roller assembly includes a side roller, a side axle and an axle retainer; the side axle is fixed vertically on the front surface of the bottom plate; the side roller is rotatably fixed on the side axle through the axle retainer. The movable roller assembly includes a front roller, a fixed support, a movable support, a connecting axle, an axle retainer, a front axle assembly and an elastic assembly; the bottom plate has a through hole for the front roller to pass through. The fixed support is fixedly connected with the back surface of the bottom plate; the movable support is rotatably arranged on the fixed support through the connecting axle; the connecting axle is provided with a bayonet on the side close to its two end portions, and the axle retainer is sleeved on the bayonet; the front roller is rotatably fixed on the front axle assembly, and the front axle assembly passes through the through hole arranged on the movable support, so that the front roller is arranged in a direction penetrating the center of the distance between the two side rollers. The elastic assembly is arranged on the upper portion of the movable support; one side of the elastic assembly abuts against the back surface of the bottom plate, and the other side abuts against the movable support; the force applied by the elastic assembly on the movable support makes the front roller rotate around the connecting axle towards the front surface of the bottom plate.

2. The semi-resilient wheel shoe according to claim 1, characterized in that The elastic assembly includes a spring and a bolt; the bolt is screwed into the welded nut through the spring, and the spring is arranged between the back surface of the bottom plate and the movable support.

3. The semi-resilient wheel shoe according to claim 2, characterized in that The movable roller assembly further includes a spring pre-compression device; the spring pre-compression device is movably arranged through the movable support and is fixedly connected with the bottom plate through the threaded hole arranged on the bottom plate, and is used to pre-compress the spring and set the initial position of the front roller during installation.

4. The semi-resilient wheel shoe of claim 2, wherein, The movable roller assembly further includes a limiting device; the limiting device is adjustably arranged through the movable support and is used to limit the rotation angle of the movable support.

5. The semi-resilient wheel shoe of claim 1, wherein, The guide shoe frame further includes a guard plate; the guard plate is arranged vertically on the lower end portion of the bottom plate; the guard plate has a slot, and the projection of the slot in the height direction is accommodated in the gap between the side roller and the front roller.

Images