Hand strap tensioning structure

Abstract

The utility model relates to a handrail belt tensioning structure which comprises a support, a rolling wheel installation frame, a fastener, a rolling wheel structure and a screw rod, the rolling wheel structure is installed on the rolling wheel installation frame, the screw rod is installed on the support, a tensioning adjusting nut is arranged on the rolling wheel installation frame, a handrail belt is connected with the lower end of the rolling wheel structure in an abutting mode, and the fastening piece is installed on the support. The screw rod penetrates through the roller mounting frame, the tensioning adjusting nut is in threaded connection with the screw rod and abuts against the roller mounting frame, and the roller mounting frame is relatively fixed to the support through the fastener. According to the hand strap tensioning structure, the gravity of the tensioning structure and the friction force of the hand strap are balanced by arranging the idler wheel structure, the pause phenomenon in the operation process of the hand strap is avoided, then the comfort degree of passengers is improved, and the hand strap tensioning structure is simple, easy to install, capable of accurately adjusting the tensioning force and convenient and fast to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of escalators, in particular to a handrail belt tensioning structure. Background Art

[0002] At present, most of the handrail tensioning structures used in stainless steel inclined handrail escalators on the market use gravity, which is costly and complex. When the structure that relies on gravity to tension the handrail is applied to high-height escalators, due to the uneven friction of the handrail, the balance between the gravity of the tensioning device and the friction of the handrail always changes during the operation of the escalator, resulting in setbacks in the handrail during operation, thereby reducing the comfort of passengers. Utility Model Content

[0003] The main purpose of the utility model is to provide a handrail belt tensioning structure to solve the above-mentioned technical problems and to ensure the balance of the gravity of the tensioning structure and the friction between the handrail belt.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A handrail belt tensioning structure includes a bracket, a roller mounting frame, a fastener, a roller structure and a screw rod, the roller structure is mounted on the roller mounting frame, the screw rod is mounted on the bracket, a tension adjustment nut is provided on the roller mounting frame, the handrail belt abuts against the lower end of the roller structure, the screw rod passes through the roller mounting frame, the tension adjustment nut is threadedly connected with the screw rod, and the tension adjustment nut abuts against the roller mounting frame, and the roller mounting frame is relatively fixed to the bracket through the fastener.

[0006] As a preferred technical solution, the roller structure includes a roller, a bearing, a countersunk screw, a fixing nut, an elastic washer, a flat washer and a mounting nut, the countersunk screw passes through the roller mounting frame, the fixing nut and the mounting nut are threadedly connected to the countersunk screw, the elastic washer is installed between the fixing nut and the roller mounting frame, the bearing is inserted into the countersunk screw, the roller is installed on the outer surface of the bearing, and the flat washer is installed between the bearing and the mounting nut.

[0007] As a preferred technical solution, the roller mounting frame is provided with a countersunk hole for the countersunk screw to pass through.

[0008] As a preferred technical solution, the fastener includes a bolt, a washer and a fastening nut, the bolt passes through the bracket and the roller mounting frame, the fastening nut is threadedly connected to the bolt, and the washer is installed between the roller mounting frame and the fastening nut.

[0009] As a preferred technical solution, the bracket is provided with a long fastening hole for the fastener to pass through.

[0010] As a preferred technical solution, the bracket is provided with reinforcing ribs, and the reinforcing ribs are fixed on the bracket.

[0011] As a preferred technical solution, the reinforcing rib is provided with a clearance hole for a clearance fastener.

[0012] The beneficial effect of the utility model is that the above-mentioned handrail belt tensioning structure, by arranging a roller structure, balances the gravity of the tensioning structure and the friction force of the handrail belt, avoids setbacks in the operation of the handrail belt, and thus improves the comfort of passengers. The structure is simple and easy to install, can accurately adjust the tensioning force, and is convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation of the handrail tensioning structure involved in the utility model;

[0014] Figure 2 This is a structural schematic diagram of the handrail belt tensioning structure involved in the utility model;

[0015] Figure 3 It is a side view of the handrail tensioning structure involved in the utility model;

[0016] Figure 4 for Figure 3 A partial enlarged view of point e in the middle. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] Please combine Figure 1 and Figure 2As shown, a handrail tensioning structure 100 is installed on an escalator, a main driving structure c and a driven structure d are installed at two ends of a truss b, the main driving structure c is connected to the driven structure d through a handrail a, the main driving structure c drives the handrail a to transmit, the handrail tensioning structure 100 abuts against the handrail a, and can keep the handrail a tensioned, the handrail tensioning structure 100 includes a bracket 1, a roller mounting frame 3, a fastener 5, a roller structure 4 and a screw 2, four roller structures 4 are installed on the roller mounting frame 3, the handrail a abuts against the lower end of the roller structure 4, and can evenly bear the tension of the handrail a, the screw 2 is installed on the bracket 1, a tensioning adjustment nut 31 is provided on the roller mounting frame 3, the screw 2 passes through the roller mounting frame 3, the tensioning adjustment nut 31 is threadedly connected to the screw 2, and the tensioning adjustment nut 31 abuts against the roller mounting frame 3, and the roller mounting frame 3 is relatively fixed to the bracket 1 through four fasteners 5.

[0019] like Figure 3 As shown, the roller structure 4 includes a roller 41, a bearing 42, a countersunk screw 47, a fixing nut 46, an elastic washer 45, a flat washer 43 and a mounting nut 44. A countersunk hole 32 is provided on the roller mounting frame 3. The countersunk screw 47 passes through the countersunk hole 32 to prevent the countersunk screw 47 from extending out and colliding with the bracket 1. The fixing nut 46 and the mounting nut 44 are threadedly connected with the countersunk screw 47. The elastic washer 45 is installed between the fixing nut 46 and the roller mounting frame 3 to prevent the fixing nut 46 from loosening, thereby ensuring that the countersunk screw 47 is firmly installed on the roller mounting frame 3. The bearing 42 is inserted into the countersunk screw 47. The roller 41 is installed on the outer surface of the bearing 42 to enable the roller 41 to rotate freely with the countersunk screw 47 as the axis, so that the handrail a can be normally transmitted and the friction between the handrail a and the roller 41 is reduced. The flat washer 43 is installed between the bearing 42 and the mounting nut 44 to fix the bearing 42 to prevent the bearing 42 from moving during use.

[0020] like Figure 4 As shown, the fastener 5 includes a bolt 51, a washer 53 and a fastening nut 52. The bracket 1 is provided with a fastening long hole 11. The bolt 51 passes through the fastening long hole 11 and the roller mounting frame 3, so that the bolt 51 can be installed along the position of the fastening long hole 11, and the tensioning force of the handrail a can be accurately adjusted. The fastening nut 52 is threadedly connected with the bolt 51, and the washer 53 is installed between the roller mounting frame 3 and the fastening nut 52, so that the roller mounting frame 3 and the bracket 1 can be fixed to ensure the stability of the installation.

[0021] Please continue to refer to Figure 2 As shown, the bracket 1 is provided with a reinforcing rib 12 , which is fixed on the bracket 1 and can enhance the tensile strength of the bracket 1 . The reinforcing rib 12 is provided with an avoidance hole 13 for avoiding the fastener 5 , which can prevent the fastener 5 from colliding with the reinforcing rib 12 .

[0022] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A handrail belt tensioning structure, characterized in that: It includes a bracket, a roller mounting frame, a fastener, a roller structure and a screw rod, the roller structure is installed on the roller mounting frame, the screw rod is installed on the bracket, a tension adjustment nut is provided on the roller mounting frame, the handrail belt abuts against the lower end of the roller structure, the screw rod passes through the roller mounting frame, the tension adjustment nut is threadedly connected with the screw rod, and the tension adjustment nut abuts against the roller mounting frame, and the roller mounting frame is relatively fixed to the bracket through the fastener.

2. The handrail belt tensioning structure according to claim 1, characterized in that: The roller structure includes a roller, a bearing, a countersunk screw, a fixing nut, an elastic washer, a flat washer and a mounting nut. The countersunk screw passes through the roller mounting frame. The fixing nut and the mounting nut are threadedly connected to the countersunk screw. The elastic washer is installed between the fixing nut and the roller mounting frame. The bearing is inserted into the countersunk screw. The roller is installed on the outer surface of the bearing. The flat washer is installed between the bearing and the mounting nut.

3. The handrail belt tensioning structure according to claim 2, characterized in that: The roller mounting frame is provided with a countersunk hole for the countersunk screw to pass through.

4. The handrail belt tensioning structure according to claim 1, characterized in that: The fastener comprises a bolt, a washer and a fastening nut, the bolt passes through the bracket and the roller mounting frame, the fastening nut is threadedly connected with the bolt, and the washer is installed between the roller mounting frame and the fastening nut.

5. The handrail belt tensioning structure according to claim 4, characterized in that: The bracket is provided with a long fastening hole through which the fastener can pass.

6. The handrail belt tensioning structure according to claim 5, characterized in that: The bracket is provided with reinforcing ribs, and the reinforcing ribs are fixed on the bracket.

7. The handrail belt tensioning structure according to claim 6, characterized in that: The reinforcing rib is provided with a clearance hole for a clearance fastener.

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