Encoder position detection mechanism applied to hoisting device

Abstract

The utility model relates to hoisting device technical field especially for a kind of encoder position detection mechanism applied to hoisting device, including pulley assembly and compression wheel subassembly;The utility model is added compression wheel subassembly to pulley structure, realize the stable compression of steel wire rope, both improve the friction between pulley and steel wire rope, prevent skidding, effectively prevent steel wire rope jump groove by physical limiting structure, guarantee the accuracy of encoder measurement and the security of system operation, pulley assembly and compression wheel subassembly are independent module, and it is convenient to install and maintain in later period, encoder uses absolute rotary encoder, can provide only position coding, power off does not lose position data, ensure that system restart still maintains accurate tracking.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and specifically to an encoder position detection mechanism applied to a lifting device. Background Technology

[0002] In the process of automating the loading system, existing technologies propose to modify the support pulleys and use the rotation of the pulleys to track the displacement information of the wire rope in real time, thereby achieving precise monitoring of the hoist position and realizing automated control.

[0003] Currently, existing methods based on pulley rotation and encoder detection carry risks such as slippage and pulley detachment between the wire rope and pulley. This causes the rotation angle recorded by the encoder to differ from the actual running length of the wire rope, which can seriously affect control accuracy and system safety. Furthermore, existing pulley and encoder structures are mostly rigid combinations, lacking adjustable active clamping mechanisms, and cannot adapt to stable measurement requirements under different tensions or operating conditions. These problems directly affect the accuracy of encoder output data and the stability of the system.

[0004] Based on this, the present invention designs an encoder position detection mechanism for use in lifting devices to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an encoder position detection mechanism for use in lifting devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an encoder position detection mechanism applied to a lifting device, comprising a pulley assembly and a pressure roller assembly. The pressure roller assembly is fixedly installed on the upper end of the pulley assembly. The pressure roller assembly includes a vertical plate, a guide groove, a mounting plate, a first fixing screw, a hexagonal nut, an adjusting bolt, a flat washer, a limit post, a mold spring, a cylindrical cavity, a pressure roller mounting seat, a rotating shaft, a pressure roller, a second fixing screw, and a second fixing screw. The lower ends of the two vertical plates are fixedly connected to the pulley assembly by the second fixing screw, and the mounting plate is fixedly connected by the first fixing screw. The device is fixedly installed on the top of two upright plates. Guide grooves are provided on the sides of both upright plates. A hexagonal nut is connected to the center of the upper end of the mounting plate. An adjusting bolt is screwed into the hexagonal nut and passes through the mounting plate. The lower end of the adjusting bolt is movably connected to a limiting post. The limiting post is fixedly connected to the upper end of a flat washer. A mold spring is connected to the lower end of the flat washer. The lower end of the mold spring is fixedly connected to the upper end of the pressure roller mounting base. A cylindrical cavity is fixedly connected to the center of the upper end of the pressure roller mounting base. The mold spring is located inside the cylindrical cavity.

[0007] As a preferred embodiment of this utility model, a rotating shaft is connected to the pressure roller mounting base, a pressure roller is movably mounted on the rotating shaft, the pressure roller is disposed in the pressure roller mounting base, and the two ends of the rotating shaft are respectively slidably connected to guide grooves opened on the same side upright plate. Shaft elastic retaining rings are respectively provided at the connection between the two sides of the pressure roller mounting base and the rotating shaft.

[0008] As a preferred embodiment of this utility model, the pulley assembly includes a bearing mounting plate, a connecting plate, a first hex socket head cap screw, a deep groove ball bearing, a pulley, a U-shaped mounting plate, an encoder mounting base, an absolute rotary encoder, an aluminum alloy flexible coupling, and a second hex socket head cap screw. Two connecting plates are symmetrically arranged between the two bearing mounting plates. The two ends of the connecting plates are connected to the two bearing mounting plates by the first hex socket head cap screw. Two U-shaped mounting plates are symmetrically fixedly connected to the back of the rear bearing mounting plate.

[0009] As a preferred embodiment of this utility model, a deep groove ball bearing is provided at the center of each bearing mounting plate, and the pulley is located at the center between the two bearing mounting plates. The two ends of the pulley axle are respectively installed inside the inner rings of the two deep groove ball bearings.

[0010] As a preferred technical solution of this utility model, an encoder mounting base is fixedly installed at the center of the front side of the bearing mounting plate by a plurality of second hexagon socket screws. An elastic washer is provided at the connection between the encoder mounting base and the bearing mounting plate. An absolute rotary encoder is fixedly installed at the front end of the encoder mounting base by a plurality of second hexagon socket screws. The inner shaft of the absolute rotary encoder is connected to the wheel axle of the pulley through an aluminum alloy elastic coupling.

[0011] As a preferred embodiment of this utility model, the two upright plates of the pressure roller assembly are respectively fixedly mounted on the upper ends of the two bearing mounting plates by two second fixing screws, and the pressure roller of the pressure roller assembly is positioned directly above the pulley.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses the pressure roller of the pressure roller assembly to flexibly compress the wire rope between the pulleys, which significantly improves the friction between the wire rope and the pulleys and avoids slippage. The pressure roller forms a limiting and covering structure on the upper part of the pulley, which can prevent the wire rope from jumping out of the pulley groove during operation, thereby improving the stability and safety of the system operation. In addition, the upper and lower floating structure of the pressure roller combined with the adjustable spring force can adapt to different tensions and wire rope diameters, making it highly versatile and effectively ensuring the accuracy of the encoder output data and the stability of the system.

[0014] 2. In use, the pulley assembly and pressure roller assembly are independent modules, which facilitates on-site installation and subsequent maintenance. It is suitable for rapid transformation and upgrading of old equipment. The encoder adopts an absolute rotary encoder, which can provide a unique position code. The position data is not lost when the power is off, ensuring that the system still maintains accurate tracking after restarting. It has high precision and power failure retention characteristics, strong reliability, and is suitable for long-term operation. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the pulley assembly of this utility model;

[0019] Figure 4 This is a cross-sectional view of the pulley assembly of this utility model;

[0020] Figure 5 This is a schematic diagram of the overall structure of the pressure roller assembly of this utility model;

[0021] Figure 6 This is a cross-sectional view of the pressure roller assembly of this utility model.

[0022] In the diagram: 1. Pulley assembly; 101. Bearing mounting plate; 102. Connecting plate; 103. First hex socket head cap screw; 104. Deep groove ball bearing; 105. Pulley; 106. U-shaped mounting plate; 107. Encoder mounting base; 108. Absolute rotary encoder; 109. Aluminum alloy flexible coupling; 1010. Second hex socket head cap screw; 2. Pressure roller assembly; 201. Vertical plate; 202. Guide groove; 203. Mounting plate; 204. First fixing screw; 205. Hex nut; 206. Adjusting bolt; 207. Flat washer; 208. Limiting post; 209. Mold spring; 2010. Cylindrical cavity; 2011. Pressure roller mounting base; 2012. Rotating shaft; 2013. Pressure roller; 2014. Shaft elastic retaining ring; 2015. Second fixing screw. Detailed Implementation

[0023] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example

[0025] Please see Figure 1-6 This utility model provides the following technical solution: an encoder position detection mechanism applied to a lifting device, including a pulley assembly 1 and a pressure roller assembly 2. The pressure roller assembly 2 is fixedly installed on the upper end of the pulley assembly 1. The pressure roller assembly 2 includes a vertical plate 201, a guide groove 202, a mounting plate 203, a first fixing screw 204, a hexagonal nut 205, an adjusting bolt 206, a flat washer 207, a limiting post 208, a mold spring 209, a cylindrical cavity 2010, a pressure roller mounting seat 2011, a rotating shaft 2012, a pressure roller 2013, a second fixing screw 2015, and a second fixing screw 2015. The lower ends of the two vertical plates 201 are fixedly connected to the pulley assembly 1 by the second fixing screw 2015. The mounting plate 203 is fixedly connected to the pulley assembly 1 by the first fixing screw 2015. Screws 204 are fixedly installed on the top of two upright plates 201. Guide grooves 202 are provided on the sides of both upright plates 201. A hexagonal nut 205 is connected to the center of the upper end of the mounting plate 203. An adjusting bolt 206 is screwed into the hexagonal nut 205. The adjusting bolt 206 passes through the mounting plate 203. The lower end of the adjusting bolt 206 is movably connected to the limiting post 208. The limiting post 208 is connected to the upper end of the flat washer 207. A mold spring 209 is connected to the lower end of the flat washer 207. The lower end of the mold spring 209 is fixedly connected to the upper end of the pressure roller mounting base 2011. A cylindrical cavity 2010 is fixedly connected to the center of the upper end of the pressure roller mounting base 2011. The mold spring 209 is located inside the cylindrical cavity 2010.

[0026] A rotating shaft 2012 is connected to the pressure roller mounting base 2011. A pressure roller 2013 is movably mounted on the rotating shaft 2012. The pressure roller 2013 is located inside the pressure roller mounting base 2011. The two ends of the rotating shaft 2012 are respectively slidably connected to the guide grooves 202 opened on the same side upright plate 201. Shaft elastic retaining rings 2014 are respectively provided at the connection between the pressure roller mounting base 2011 and the rotating shaft 2012 on both sides.

[0027] The rotating shaft 2012 of the aforementioned pressure roller assembly 2 can float up and down in the guide groove 202 through an adjustable structural design, forming a flexible compression on the wire rope, which not only increases the friction but also prevents the wire rope from jumping up. By rotating the adjusting bolt 206 that passes through the mounting plate 203, the adjusting bolt 206 is screwed downward into the hexagonal nut 205, which compresses the mold spring 209 in the cylindrical cavity 2010 to adjust the preload of the compression spring, thereby adjusting the degree of compression of the wire rope by the pressure roller.

[0028] The pulley assembly 1 includes a bearing mounting plate 101, a connecting plate 102, a first hex socket head cap screw 103, a deep groove ball bearing 104, a pulley 105, a U-shaped mounting plate 106, an encoder mounting base 107, an absolute rotary encoder 108, an aluminum alloy flexible coupling 109, and a second hex socket head cap screw 1010. Two connecting plates 102 are symmetrically arranged between the two bearing mounting plates 101. The two ends of the connecting plates 102 are connected to the two bearing mounting plates 101 by the first hex socket head cap screw 103. Two U-shaped mounting plates 106 are symmetrically fixedly connected to the back of the rear bearing mounting plate 101.

[0029] A deep groove ball bearing 104 is installed at the center of each bearing mounting plate 101, and a pulley 105 is installed at the center between the two bearing mounting plates 101. The two ends of the pulley 105 axle are respectively installed in the inner ring of the two deep groove ball bearings 104.

[0030] An encoder mounting base 107 is fixedly mounted at the center of the front bearing mounting plate 101 by a plurality of second hexagon socket screws 1010. An elastic washer is provided at the connection between the encoder mounting base 107 and the bearing mounting plate 101. An absolute rotary encoder 108 is fixedly mounted at the front end of the encoder mounting base 107 by a plurality of second hexagon socket screws 1010. The inner shaft of the absolute rotary encoder 108 is connected to the axle of the pulley 105 by an aluminum alloy elastic coupling 109.

[0031] The two upright plates 201 of the pressure roller assembly 2 are fixedly installed on the upper ends of the two bearing mounting plates 101 by two second fixing screws 2015 respectively, and the pressure roller 2013 of the pressure roller assembly 2 is located directly above the pulley 105.

[0032] The displacement detection structure formed by the pulley 105 and the absolute rotary encoder 108 measures the movement of the wire rope based on the rotation of the pulley. At the same time, the pulley assembly 1 and the pressure roller assembly 2 adopt a modular design. Both the pulley assembly and the pressure roller assembly are independent modules, which facilitates on-site installation and subsequent maintenance, and is suitable for the rapid transformation and upgrading of old equipment.

[0033] The working principle and usage process of this utility model are as follows: In specific use, the wire rope drives the pulley 105 to rotate during operation. The rotation of the pulley 105, connected by the aluminum alloy elastic coupling 109, drives the inner shaft of the absolute rotary encoder 108 to rotate synchronously. Thus, the absolute rotary encoder 108 records angular displacement data in real time to monitor the running length of the wire rope. The pressure roller 2013 in the pressure roller assembly 2 forms a limiting and covering structure on the upper part of the pulley 105. By rotating the adjusting bolt 206, an adjustable vertical preload is applied, which can prevent the wire rope from slipping or derailing during operation. This ensures that the wire rope is always stably attached to the groove of the pulley 105, effectively overcoming problems such as wire rope slippage, slippage, and rope skipping, and significantly improving the accuracy and consistency of the encoder position monitoring output data.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An encoder position detection mechanism for a lifting device, comprising a pulley assembly (1) and a pressure roller assembly (2), characterized in that: The pressure roller assembly (2) is fixedly installed on the upper end of the pulley assembly (1). The pressure roller assembly (2) includes a vertical plate (201), a guide groove (202), a mounting plate (203), a first fixing screw (204), a hexagonal nut (205), an adjusting bolt (206), a flat washer (207), a limiting post (208), a mold spring (209), a cylindrical cavity (2010), a pressure roller mounting seat (2011), a rotating shaft (2012), a pressure roller (2013), a second fixing screw (2015), and the lower ends of the two vertical plates (201) are fixedly connected to the pulley assembly (1) by the second fixing screw (2015). The mounting plate (203) is fixedly installed on the top of the two vertical plates (201) by the first fixing screw (204). Guide grooves (202) are provided on the sides of the plate (201). A hexagonal nut (205) is connected to the center of the upper end of the mounting plate (203). An adjusting bolt (206) is screwed inside the hexagonal nut (205). The adjusting bolt (206) passes through the mounting plate (203). The lower end of the adjusting bolt (206) is movably connected to the limiting post (208). The limiting post (208) is connected to the upper end of the flat washer (207). A mold spring (209) is connected to the lower end of the flat washer (207). The lower end of the mold spring (209) is fixedly connected to the upper end of the pressure roller mounting base (2011). A cylindrical cavity (2010) is fixedly connected to the center of the upper end of the pressure roller mounting base (2011). The mold spring (209) is located inside the cylindrical cavity (2010).

2. The encoder position detection mechanism for a lifting device according to claim 1, characterized in that: A rotating shaft (2012) is connected to the pressure roller mounting base (2011), and a pressure roller (2013) is movably mounted on the rotating shaft (2012). The pressure roller (2013) is disposed inside the pressure roller mounting base (2011). The two ends of the rotating shaft (2012) are respectively slidably connected to guide grooves (202) opened on the same side upright plate (201). Shaft elastic retaining rings (2014) are respectively provided at the connection between the two sides of the pressure roller mounting base (2011) and the rotating shaft (2012).

3. The encoder position detection mechanism applied to a hoisting device according to claim 1, characterized in that: The pulley assembly (1) includes a bearing mounting plate (101), a connecting plate (102), a first hex socket screw (103), a deep groove ball bearing (104), a pulley (105), a U-shaped mounting plate (106), an encoder mounting base (107), an absolute rotary encoder (108), an aluminum alloy flexible coupling (109), and a second hex socket screw (1010). Two connecting plates (102) are symmetrically arranged between the two bearing mounting plates (101). The two ends of the connecting plates (102) are connected to the two bearing mounting plates (101) by the first hex socket screw (103). Two U-shaped mounting plates (106) are symmetrically fixedly connected to the back of the rear bearing mounting plate (101).

4. The encoder position detection mechanism for a lifting device according to claim 3, characterized in that: A deep groove ball bearing (104) is provided at the center of each bearing mounting plate (101), and a pulley (105) is provided at the center between the two bearing mounting plates (101). The two ends of the pulley (105) axle are respectively installed in the inner rings of the two deep groove ball bearings (104).

5. The encoder position detection mechanism applied to a hoisting device according to claim 3, characterized in that: An encoder mounting base (107) is fixedly mounted at the center of the front of the bearing mounting plate (101) by a plurality of second hexagon socket screws (1010). An elastic washer is provided at the connection between the encoder mounting base (107) and the bearing mounting plate (101). An absolute rotary encoder (108) is fixedly mounted at the front end of the encoder mounting base (107) by a plurality of second hexagon socket screws (1010). The inner shaft of the absolute rotary encoder (108) is connected to the axle of the pulley (105) through an aluminum alloy elastic coupling (109).

6. The encoder position detection mechanism applied to a hoisting device according to claim 1, characterized in that: The two upright plates (201) of the pressure roller assembly (2) are fixedly installed on the upper ends of the two bearing mounting plates (101) by two second fixing screws (2015), and the pressure roller (2013) of the pressure roller assembly (2) is located directly above the pulley (105).

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