Novel fixing structure of rope returning wheel

Abstract

The utility model relates to a novel fixing structure of a rope returning wheel, which comprises a fixing frame and the rope returning wheel, the rope returning wheel is arranged on the fixing frame, the fixing frame comprises a cross beam and side beams, the side beams are arranged on two sides of the cross beam, key grooves are arranged on two side surfaces of the cross beam, and the key grooves are arranged on two side surfaces of the cross beam. The utility model has the advantages that the arc-shaped part and the horizontal part are matched with the shape of the key groove, the two ends of the rotating shaft are clamped in the key groove, and the key groove and the rotating shaft are mutually limited, so that the rotating shaft is prevented from easily rotating along with the rope returning wheel; the mounting stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator supporting equipment field, especially in a novel fixed structure of return pulley. BACKGROUND

[0002] The elevator return pulley is also called elevator counter pulley or guide pulley, and is one of the key components in the elevator system, and is mainly used for changing the direction of the steel wire rope to ensure that the elevator can stably run up and down along the guide rail. It can form different traction ratios with the reasonable winding of the steel wire rope, thereby reducing the power of the driving host and the brake torque of the brake.

[0003] At present, the shaft of the return pulley is fixed on the beam of the elevator shaft through bolts, but as the elevator car moves up and down, the shaft of the return pulley rotates, but as the use time becomes longer, the nut on the bolt is prone to loosen due to the rotation of the return pulley, reducing the fixing stability of the return pulley.

[0004] It should be noted that the information disclosed in the above background section is only used to enhance the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model discloses a novel fixed structure of return pulley.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A novel fixed structure of return pulley, comprising a fixed frame and a return pulley, the return pulley and the fixed frame, the return pulley is arranged on the fixed frame, the fixed frame comprises a cross beam and a side beam, the side beam is arranged on both sides of the cross beam, key grooves are formed on both sides of the cross beam, the key grooves comprise arc-shaped parts and horizontal parts, a shaft is rotatably connected in the return pulley, and the both ends of the shaft are clamped in the key grooves.

[0008] Further, the arc-shaped parts are arranged above the key grooves, and the corresponding central angle range of the arc-shaped parts is 190-274°.

[0009] Further, the horizontal parts are arranged below the key grooves, and the corresponding central angle range of the horizontal parts is 86-170°.

[0010] Further, the both ends of the shaft are provided with notches, and the horizontal parts are clamped in the notches.

[0011] Further, a pair of positioning columns are arranged on the outer side of the cross beam, and the pair of positioning columns are symmetrically arranged about the center of the key grooves.

[0012] Further, the spacing between the positioning columns is greater than the diameter of the return rope wheel.

[0013] Further, the return rope wheel has a plurality of clamping grooves arranged along the circumferential direction on the arc surface.

[0014] Further, the hub of the return rope wheel has a recess.

[0015] Further, the cross beam and the side beam are provided with fixing bolts.

[0016] The beneficial effects of the present application are as follows:

[0017] 1. The arc-shaped part and the horizontal part of the end part of the rotating shaft are matched with the shape of the key groove, the two ends of the rotating shaft are clamped in the key groove, the key groove and the rotating shaft are limited to each other, the rotating shaft is prevented from rotating with the return rope wheel, and the fixing stability of the rotating shaft is improved.

[0018] 2. The corresponding central angle range of the arc-shaped part is 190-274°, the corresponding central angle range of the horizontal part is 86-170°, the horizontal part is clamped and matched with the notch, the cross section of the key groove does not have a complete circular shape, the horizontal part can play a role in limiting rotation, and the rotating shaft is prevented from easily rotating.

[0019] 3. The positioning column is used for positioning the limit positions of the left and right sides of the return rope wheel, and the installation position of the return rope wheel is convenient for installation personnel to determine.

[0020] 4. The hub of the return rope wheel has a recess, the return rope wheel forms a hollow structure, the self-weight of the return rope wheel is further reduced, the load of the rotating shaft is reduced, and the stability of the installation of the rotating shaft is beneficial. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the fixing structure of the novel return rope wheel.

[0022] Figure 2 It is a structural schematic view of the return rope wheel.

[0023] In the figure: 1, fixed frame; 11, cross beam; 12, side beam; 13, fixing bolt; 14, key groove; 141, arc-shaped part; 142, horizontal part; 15, positioning column; 2, return rope wheel; 21, rotating shaft; 211, notch; 22, clamping groove; 23, recess. DETAILED DESCRIPTION

[0024] The specific implementation manner of the present application will be described below in combination with the drawings.

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the device provided by the utility model is further described in detail below in combination with the drawings and specific embodiments. The advantages and features of the utility model will be more apparent according to the following description. It should be noted that the drawings are very simplified and all use non-precise proportions, and are only used to facilitate and clarify the purpose of assisting the description of the embodiments of the utility model. In order to make the purpose, features and advantages of the utility model more apparent and easy to understand, please refer to the drawings. It should be understood that the structure, proportion, size, etc. shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification, so that people skilled in the art can understand and read, and are not used to limit the conditions for implementing the utility model, so they do not have substantial technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0026] Embodiment:

[0027] A novel fixed structure of a return rope wheel 2, as shown in Figure 1 , comprises a fixed frame 1 and a return rope wheel 2, and the return rope wheel 2 is installed in the fixed frame 1.

[0028] As shown in Figure 1 , the fixed frame 1 comprises a cross beam 11 and side beams 12, the side beams 12 are fixed on both sides of the cross beam 11, and the cross beam 11 and the side beams 12 are detachably connected by fixed bolts 13 to be fixed as a whole. In this embodiment, three fixed bolts 13 are arranged on both sides of the cross beam 11 to ensure the stability and firmness of the fixed cross beam 11 and side beams 12.

[0029] As shown in Figure 1 , key grooves 14 are formed on both sides of the cross beam 11, the key grooves 14 comprise arc-shaped portions 141 and horizontal portions 142, wherein the arc-shaped portions 141 are located above the horizontal portions 142, the arc-shaped portions 141 correspond to a central angle range of 190-274°, and the horizontal portions 142 correspond to a central angle range of 86-170°. In this embodiment, the horizontal portion 142 corresponds to a central angle of 96°, and the arc-shaped portion 141 corresponds to a central angle of 264°.

[0030] As shown in Figure 1 , a pair of positioning columns 15 are arranged on the outer side of the cross beam 11, the pair of positioning columns 15 are symmetrically arranged about the center of the key groove 14, and the distance between the two positioning columns 15 is greater than the diameter of the return rope wheel 2. The positioning columns 15 limit the installation position of the return rope wheel 2 from the left and right sides, thereby improving the installation accuracy of the return rope wheel 2.

[0031] As shown in Figure 1 and Figure 2As shown, a rotating shaft 21 is rotatably connected to the return rope wheel 2, and both ends of the rotating shaft 21 are engaged with the keyway 14. During operation, a cable is installed on the return rope wheel 2, and the return rope wheel 2 rotates around the rotating shaft 21.

[0032] like Figure 1 and Figure 2 As shown, both ends of the rotating shaft 21 are provided with notches 211, which are located at the lower part of the end of the rotating shaft 21, and the cross-sectional shape of the end of the rotating shaft 21 matches the cross-sectional shape of the keyway 14. During installation, both ends of the rotating shaft 21 are respectively engaged in the keyway 14, and the step at the notch 211 abuts against the horizontal part 142, so that the end of the rotating shaft 21 cannot rotate in the circumferential direction in the keyway 14.

[0033] like Figure 2 As shown, the hub of the return rope wheel 2 has a recess 23, which is distributed on the side of the hub. In order to reduce the weight of the return rope wheel 2, it is beneficial to reduce the load on the return rope wheel 2 and improve stability.

[0034] like Figure 2 As shown, the return rope wheel 2 has several grooves 22 arranged circumferentially on its arc surface. The grooves 22 are evenly arranged along the width direction of the return rope wheel 2. The cable is embedded in the grooves 22. When working, the return rope wheel 2 rotates, which drives the cable to rotate.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A novel fixing structure of a return roller, characterized in that, The fixed frame comprises a crossbeam and side beams arranged on both sides of the crossbeam, and key grooves are formed on both side faces of the crossbeam, wherein the key grooves comprise an arc-shaped part and a horizontal part, and a rotating shaft is rotatably connected to the return rope wheel and clamped at both ends of the rotating shaft in the key grooves.

2. The fixing structure of a new type of return roller according to claim 1, characterized in that: The arc-shaped part is arranged above the key groove, and the corresponding central angle range of the arc-shaped part is 190-274°.

3. The fixing structure of a new type of return roller according to claim 2, characterized in that: The horizontal part is arranged below the key groove, and the corresponding central angle range of the horizontal part is 86-170°.

4. The fixing structure of a new type of return roller according to claim 3, characterized in that: Both ends of the rotating shaft are provided with notches, and the horizontal part is clamped in the notches.

5. The fixing structure of a new type of return roller according to claim 1, characterized in that: The outer side of the crossbeam is provided with a pair of positioning columns, and the pair of positioning columns are symmetrically arranged about the center of the key groove.

6. The fixing structure of a new type of return roller according to claim 5, characterized in that: The spacing between the positioning columns is greater than the diameter of the return rope wheel.

7. The fixing structure of a new type of return roller according to claim 1, characterized in that: A plurality of clamping grooves are formed on the arc surface of the return rope wheel and are arranged in the circumferential direction.

8. The fixing structure of a new type of return roller according to claim 1, characterized in that: A recess is formed on the hub of the return rope wheel.

9. The fixing structure of a new type of return roller according to claim 1, characterized in that: The crossbeam and the side beams are provided with fixing bolts.

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