Elevator roller guide shoe

Abstract

The invention discloses an elevator roller guide shoe, and relates to the field of elevator accessories, the elevator roller guide shoe comprises a fastening support, a roller support is mounted on the fastening support, the roller support is arranged in three directions to form a [shape, three surfaces of the roller support are respectively provided with a first roller group, and two sides of the first roller group are symmetrically provided with compensation roller groups; the compensation roller set comprises a first roller and a second roller which are installed at the two ends of the connecting rod, and a second synchronous belt is arranged between the first roller and the second roller. An extrusion head assembly is arranged on the side, close to the guide rail, of the second synchronous belt. The first roller set and the compensation roller set are matched with each other, under the compensation effect of the compensation roller set, stress on each synchronous belt can be reduced under the condition that a guide rail deviates or an elevator is unbalanced in load, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of elevator accessories, and specifically to an elevator roller guide shoe. Background Art

[0002] An elevator guide shoe is a key mechanical device in an elevator system for guiding and stabilizing the car (or counterweight) to run vertically along the guide rail. It is usually installed at the upper and lower ends of the car or counterweight and works in cooperation with the guide rail to ensure the smooth and safe operation of the elevator.

[0003] Traditional elevator guide shoes are generally sliding guide shoes. However, such guide shoes have large losses, high energy consumption, and high noise, and all indicators are inferior to roller guide shoes. Roller guide shoes in the prior art generally use steel wheels wrapped with polyurethane as rollers, replacing sliding friction with rolling friction, and using polyurethane materials to absorb noise, achieving good effects of extending service life and reducing equipment failures. However, there are still problems when using such roller guide shoes: First, the processing of the roller of the steel wheel wrapped with polyurethane material is complex. When the external polyurethane layer (or vulcanized rubber) is damaged, the whole needs to be replaced, with a long construction period and high cost. Second, sometimes during the use of such rollers, due to situations such as elevator overweight and offloading, the force on one side of the roller is unbalanced, increasing wear. Over time, it may cause the elevator to move unstably or the vibration to exceed the standard. Third, if the guide rail is offset later due to elevator overweight, offloading or problems in the installation of the guide rail itself, it may lead to increased wear of the roller. In the case of guide rail offset and roller wear, if not discovered in time, more serious consequences may occur. Summary of the Invention

[0004] The purpose of the present invention is to provide an elevator roller guide shoe to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An elevator roller guide shoe includes a fastening bracket, on which a roller bracket is installed. The roller bracket is arranged in a "C" shape in three directions, and first roller groups are provided on three surfaces of the roller bracket. Compensating roller groups are symmetrically arranged on both sides of the first roller group; The first roller group includes two rollers arranged side by side in the vertical direction, and a synchronous belt is provided outside the rollers; The compensating roller group includes a roller one and a roller two installed at both ends of a connecting rod. The back of the roller one contacts the elevator guide rail through the elastic force of a spring assembly, and the roller two does not contact the guide rail under normal guiding conditions. A synchronous belt two is provided between the roller one and the roller two; An extrusion head assembly is provided on one side of the synchronous belt two close to the guide rail; The extrusion head assembly includes an extrusion head and a fixing frame. The extrusion head is installed in the fixing frame and an elastic block capable of generating compression deformation under force is provided between the extrusion head and the fixing frame.

[0006] Preferably, the roller bracket and the fastening bracket are connected by fastening bolts.

[0007] Preferably, the roller is provided with a gear hobbing, and the gear hobbing is engaged with the tooth groove on the inner side surface of the synchronous belt.

[0008] Preferably, rollers are provided on both sides of the roller, the rollers are installed in roller brackets, the rear end of the roller bracket is connected to an elastic pad, and the elastic pad is fixedly installed in the crossbeam frame.

[0009] Preferably, both ends of the crossbeam are fixedly mounted on the roller bracket.

[0010] Preferably, the side surface of the connecting rod is rotatably mounted on the roller bracket via a connecting rod shaft.

[0011] Preferably, the roller one and the roller two are provided with the same rolling teeth as the rollers, and the synchronous belt two is provided with the same tooth grooves as the synchronous belt.

[0012] Preferably, the spring assembly includes a spring, a limiting bolt and a limiting nut. The limiting bolt passes through the crossbeam frame and its end is threadedly connected to the push block on one side of the roller. The limiting nut is threadedly connected to the limiting bolt, and the spring is installed between the nut and the crossbeam frame.

[0013] Preferably, the working surface of the extrusion head is an arc surface, a groove is provided on the back of the extrusion head, a limit rod is provided in the groove, the limit rod passes through the elastic block and is slidably connected in the fixed frame, a limit head is provided at the end of the limit rod, and a contact sensor is fixedly installed in the groove at the upper end of the elastic block.

[0014] Preferably, a wear-resistant sheet is provided on the outer side surface of the fixing frame, and the fixing frame is connected to the roller bracket through a connecting rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention separates the timing belt from the roller. When the external timing belt wears out, only the timing belt needs to be replaced. This reduces both the difficulty of roller processing and maintenance costs. 2. The first roller assembly and the compensation roller assembly provided in this invention cooperate with each other. Through the compensation effect of the compensation roller assembly, the force on each synchronous belt can be reduced in the event of guide rail deviation or elevator overload, thereby increasing the service life; 3. During use, if there is a large deviation of the guide rail, the extrusion head assembly can promptly send a signal to remind maintenance personnel to promptly detect and eliminate the dangerous signal to ensure the normal use of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 Schematic diagram of the structure after removing the fastening bracket.

[0018] Figure 3 for Figure 2 Front view of .

[0019] Figure 4 for Figure 3 side view.

[0020] Figure 5 for Figure 3 Top view.

[0021] Figure 6 This is a structural diagram of the first roller group, compensation roller group, and extrusion head assembly.

[0022] Figure 7 for Figure 6 Enlarged view of the structure at point A.

[0023] Figure 8 This is an exploded view of the extrusion head assembly structure.

[0024] In the figure: 1-fastening bracket; 2-roller bracket; 3-first roller group; 31-roller; 311-roller; 312-roller bracket; 313-elastic pad; 32-synchronous belt; 35-crossbeam frame; 4-Compensating roller assembly; 41-Connecting rod; 411-Connecting rod shaft; 42-Roller 1; 43-Spring assembly; 431-Spring; 432-Limiting bolt; 433-Limiting nut; 44-Timing belt 2; 45-Roller 2; 5-extrusion head assembly; 51-extrusion head; 511-limiting rod; 52-fixing frame; 53-elastic block. DETAILED DESCRIPTION

[0025] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] See also Figures 1 to 8, the present invention provides a technical solution: an elevator roller guide shoe, including a fastening bracket 1, on which a roller bracket 2 is installed. The roller bracket 2 is arranged in a "C" shape in three directions, and a first roller group 3 is provided on each of the three surfaces of the roller bracket 2. Compensating roller groups 4 are symmetrically arranged on both sides of the first roller group 3; The first roller group 3 includes two rollers 31 arranged side by side in the vertical direction. On the outer side of the rollers 31, a synchronous belt 32 is provided, which keeps in contact with the elevator guide rail through the synchronous belt 32. By using the synchronous belt 32 to replace the original polyurethane layer on the roller structure, it provides the convenience of easy replacement; The compensating roller group 4 includes a roller one 42 and a roller two 45 installed at both ends of a connecting rod 41. The back of the roller one 42 contacts the elevator guide rail through the elastic force of a spring assembly 43 arranged. The roller two 45 does not contact the guide rail under normal guiding conditions. A synchronous belt two 44 is provided between the roller one 42 and the roller two 45. When the first roller group 3 is under a large pressure, the compensating roller group 4 can provide rolling support through the rotation of the synchronous belt two 44 on the roller one 42 and the roller two 45, reduce the pressure on the synchronous belt 32, and can improve the service life; On the side of the synchronous belt two 44 close to the guide rail, an extrusion head assembly 5 is provided; The extrusion head assembly 5 includes an extrusion head 51 and a fixing bracket 52. The extrusion head 51 is installed in the fixing bracket 52 and an elastic block 53 that can generate compressive deformation under force is provided between the extrusion head 51 and the fixing bracket 52. The provided extrusion head assembly 5 can keep the synchronous belt two 44 taut by receiving the pressure of the guide rail, and can also detect the magnitude of the external force and send a signal when the external force is too large.

[0027] In this embodiment, the roller bracket 2 and the fastening bracket 1 are connected by fastening bolts, and the roller bracket 2 is installed on the elevator through the fastening bracket 1.

[0028] In this embodiment, the rollers 31 are provided with gear teeth, and the gear teeth are kept meshed with the tooth grooves on the inner side of the synchronous belt 32 to maintain transmission through meshing and prevent the synchronous belt 32 from slipping.

[0029] In this embodiment, roller shafts 311 are provided on both sides of the rollers 31. The roller shafts 311 are installed in roller shaft brackets 312, and the rear ends of the roller shaft brackets 312 are connected to an elastic pad 313. The elastic pad 313 is fixedly installed in a cross beam frame 35. Through the action of the elastic pad 313, the rollers 31 and the synchronous belt 32 on the rollers 31 can keep in contact with the guide rail.

[0030] In this embodiment, both ends of the cross beam frame 35 are fixedly installed on the roller bracket 2.

[0031] In this embodiment, the side surface of the connecting rod 41 is rotatably mounted on the roller bracket 2 via a connecting rod shaft 411 , and the connecting rod 41 can rotate around the connecting rod shaft 411 when subjected to external force.

[0032] In this embodiment, the roller 1 42 and the roller 2 45 are provided with the same rolling teeth as the roller 31, and the synchronous belt 2 44 is provided with the same tooth grooves as the synchronous belt 32, which maintain transmission through engagement to prevent slipping.

[0033] In this embodiment, the spring assembly 43 includes a spring 431, a limiting bolt 432 and a limiting nut 433. The limiting bolt 432 passes through the crossbeam frame 35 and the end thereof is threadedly connected to the push block on the side of the roller 42. The limiting nut 433 is threadedly connected to the limiting bolt 432. The spring 431 is installed between the nut 433 and the crossbeam frame 35. The elastic force of the spring 431 causes the connecting rod 41 to rotate, thereby causing the roller 42 to contact the guide rail.

[0034] In this embodiment, the working surface of the extrusion head 51 is an arc surface, and a groove is provided on the back of the extrusion head 51. A limit rod 511 is provided in the groove. The limit rod 511 passes through the elastic block 53 and is slidably connected to the fixing frame 52. A limit head is provided at the end of the limit rod 511. The upper end of the elastic block 53 is provided with a contact sensor fixedly installed in the groove. The contact sensor is connected to an external alarm or alarm device. When the external force applied to the extrusion head 51 is too large, the movement of the extrusion head 51 can compress the internal elastic block 53 to deform. Because it is clamped between the extrusion head 51 and the fixing frame 52, the elastic block 53 will be stretched in the up and down directions until the deformation is too large and contacts the contact sensor, triggering an alarm.

[0035] In this embodiment, a wear-resistant sheet is provided on the outer surface of the fixing frame 52 . The fixing frame 52 is connected to the roller bracket 2 via a connecting rod. The wear-resistant sheet is used to contact the guide rail.

[0036] Working principle: During operation, the first roller group 3 and roller 1 42 contact the guide rail to provide guidance for the operation of the elevator. When the elevator is overloaded, the first roller group 3 and the compensation roller group 4 on one side are subjected to increased force, which will squeeze roller 1 42, causing the connecting rod 41 to rotate, so that roller 2 45 contacts the guide rail at the same time, which is used to disperse the pressure on the synchronous belt 1 32 to prevent excessive wear. At the same time, external force will be applied to the extrusion head 51, thereby tightening the synchronous belt 2 44. If the guide rail is excessively deflected, the extrusion head 51 will be squeezed more, compressing the elastic block 53 and deforming the elastic block 53 until it contacts the contact sensor, triggering an alarm and implementing maintenance as soon as possible.

[0037] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. An elevator roller guide shoe, comprising a fastening bracket (1), characterized in that: A roller bracket (2) is installed on the fastening bracket (1). The roller bracket (2) is provided in three directions to form a "C" shape. First roller groups (3) are provided on all three surfaces of the roller bracket (2), and compensation roller groups (4) are symmetrically arranged on both sides of the first roller groups (3). The first roller group (3) includes two rollers (31) arranged side by side in the vertical direction, and a synchronous belt (32) is provided outside the rollers (31). The compensation roller group (4) includes a first roller (42) and a second roller (45) installed at both ends of a connecting rod (41). The back surface of the first roller (42) contacts the elevator guide rail by the elastic force of a spring assembly (43). The second roller (45) does not contact the guide rail under normal guiding conditions. A second synchronous belt (44) is provided between the first roller (42) and the second roller (45). A squeezing head assembly (5) is provided on one side of the second synchronous belt (44) close to the guide rail. The squeezing head assembly (5) includes a squeezing head (51) and a fixing bracket (52). The squeezing head (51) is installed in the fixing bracket (52), and an elastic block (53) that can produce compressive deformation under force is provided between the squeezing head (51) and the fixing bracket (52).

2. The elevator roller guide shoe according to claim 1, characterized in that: The roller bracket (2) and the fastening bracket (1) are connected by fastening bolts.

3. The elevator roller guide shoe according to claim 1, characterized in that: The roller (31) is provided with gear teeth, and the gear teeth are kept meshed with the tooth grooves on the inner side of the synchronous belt (32).

4. The elevator roller guide shoe according to claim 1, characterized in that: Roller shafts (311) are provided on both sides of the roller (31). The roller shafts (311) are installed in roller shaft brackets (312), and the rear ends of the roller shaft brackets (312) are connected to an elastic pad (313). The elastic pad (313) is fixedly installed in a cross beam frame (35).

5. The elevator roller guide shoe according to claim 4, characterized in that: Both ends of the cross beam frame (35) are fixedly installed on the roller bracket (2).

6. The elevator roller guide shoe according to claim 1, characterized in that: The side surface of the connecting rod (41) is rotationally installed on the roller bracket (2) through a connecting rod shaft (411).

7. The elevator roller guide shoe according to claim 1, characterized in that: The first roller (42) and the second roller (45) are provided with the same gear teeth as the roller (31), and the second synchronous belt (44) is provided with the same tooth grooves as the synchronous belt (32).

8. The elevator roller guide shoe according to claim 5, characterized in that: The spring assembly (43) includes a spring (431), a limit bolt (432), and a limit nut (boundary condition). The limit bolt (432) passes through the cross beam frame (35) and its end is threadedly connected to a push block on the side surface of the first roller (42). The limit nut (433) is threadedly connected to the limit bolt (432). The spring (431) is installed between the nut (433) and the cross beam frame (35).

9. The elevator roller guide shoe according to claim 1, characterized in that: The working surface of the squeezing head (51) is an arc surface. A groove is provided on the back of the squeezing head (51). A limit rod (511) is provided in the groove. The limit rod (511) passes through the elastic block (53) and is slidably connected in the fixing bracket (52). A limit head is provided at the end of the limit rod (511). A contact sensor fixedly installed in the groove is provided at the upper end of the elastic block (53).

10. The elevator roller guide shoe according to claim 8, characterized in that: A wear-resistant sheet is provided on the outer side of the fixing frame (52), and the fixing frame (52) is connected to the roller bracket (2) via a connecting rod.

Images