Stay wire displacement sensor capable of adapting to various shaft type encoders

Abstract

The utility model discloses a stay wire displacement sensor adaptable to various shaft type encoders, and belongs to the technical field of stay wire displacement sensors. The structure comprises a first shell, a second shell fixedly installed on the first shell, a wire wheel wound with a steel wire rope and a coil spring capable of resetting the wire wheel, one end of the steel wire rope penetrates through the first shell to reach the outside, a first transmission shaft and a second transmission shaft are arranged on the two sides of the center position of the wire wheel respectively, and the first transmission shaft is rotationally arranged in the center position of the second shell; the second transmission shaft is rotationally arranged in the center of the first shell, a variable-diameter sleeve is arranged in the first transmission shaft in a sliding mode through a sliding assembly, the interior of the variable-diameter sleeve is fixedly connected with an encoder transmission shaft through a first fastener, and the encoder transmission shaft is rotationally connected to the rotary encoder. The stay wire displacement sensor can adapt to various shaft type encoders, and the application range of the stay wire displacement sensor is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of wire-drawing displacement sensors, in particular to a wire-drawing displacement sensor which can be adapted to a variety of shaft encoders. Background Art

[0002] The wire displacement sensor is a delicate structure of the linear displacement sensor. It fully combines the advantages of the angle sensor and the linear displacement sensor. It is a sensor with small installation size, compact structure, large measuring stroke and high precision. The wire displacement sensor generally uses an encoder to convert the linear displacement distance into a signal that can be used for communication, transmission and storage. Encoders are classified into shaft type and sleeve type according to the mechanical installation form. The shaft diameter and shaft length of the transmission shaft of different types of shaft encoders are different. In order to adapt to different types of shaft encoders, different types of wire displacement sensors need to be designed. This will not only affect the mass production of wire displacement sensors, but also when the shaft encoder is damaged, only the same type of shaft encoder can be replaced, with a small selection range and inconvenient use. Therefore, it is necessary to design a wire displacement sensor that can adapt to multiple types of shaft encoders, so that the wire displacement sensor can adapt to multiple shaft encoders, can be mass-produced according to the same size, and is more convenient to use. Utility Model Content

[0003] The utility model aims to provide a wire displacement sensor which can be adapted to various shaft encoders, so as to solve the problems raised in the above-mentioned background technology.

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

[0005] A wire-pull displacement sensor that can be adapted to a variety of shaft encoders, comprises a shell one, a shell two fixedly mounted on the shell one, a reel wound with a wire rope, and a coil spring capable of resetting the reel, a reel rotatably arranged at the center position of the inner cavity of the shell one, one end of the wire rope is fixed on the reel, and the other end of the wire rope passes through the shell one to reach the outside, a transmission shaft one and a transmission shaft two are respectively arranged on both sides of the center position of the reel, the transmission shaft one is rotatably arranged at the center position of the shell two, and the transmission shaft two is rotatably arranged at the center position of the shell one, a reducing sleeve is slidably arranged in the transmission shaft one through a sliding assembly, a fastener one is arranged on the reducing sleeve, and the inside of the reducing sleeve is fixedly connected to the encoder transmission shaft rotatably connected to the rotary encoder through the fastener one.

[0006] As a further solution of the utility model: the sliding assembly includes a slide groove and a second fastener, the slide groove is arranged on the outside of the reducer sleeve, and one end of the second fastener passes through the first transmission shaft and is slidably connected to the slide groove.

[0007] As a further solution of the utility model: a mounting plate is fixedly mounted on one end of the shell, a rotary encoder is fixedly mounted on the mounting plate by screws, and the encoder transmission shaft passes through the center position of the mounting plate and is fixedly connected to the reducer sleeve.

[0008] As a further solution of the utility model: a coil spring box is fixedly installed on the outer side of shell one away from shell two, a coil spring is fixedly arranged inside the coil spring box, one end of transmission shaft two passes through the center position of shell one and is rotatably connected to shell one, and one end of transmission shaft two is fixedly connected to one end of the coil spring.

[0009] As a further solution of the utility model: the transmission shaft 1 is rotatably connected to the center position of the housing 2 through a first bearing, and the transmission shaft 2 is rotatably connected to the housing 1 through a second bearing.

[0010] As a further solution of the utility model: a wire outlet pipe is provided on one side of the shell, a wire outlet assembly is provided at one end of the wire outlet pipe, a wire groove is opened in the wire outlet pipe, the wire groove is connected with an inner cavity of the shell, and one end of the wire rope reaches the outside through the wire groove and the wire outlet assembly.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By using fasteners to fix the reducer sleeve and the encoder drive shaft, the wire-drawn displacement sensor can be adapted to encoders with various shaft diameters; by arranging a sliding component on the reducer sleeve and the encoder drive shaft, the length of the reducer sleeve and the encoder drive shaft can be guaranteed, so that the wire-drawn displacement sensor can be adapted to encoders with various shaft lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A cross-sectional view of a top view of a wire-drawn displacement sensor that can be adapted to a variety of shaft encoders;

[0014] Figure 2 It is a cross-sectional view of the main view of a wire-drawn displacement sensor that can be adapted to a variety of shaft encoders;

[0015] Figure 3 A stereoscopic diagram of a wire-drawn displacement sensor that can be adapted to a variety of shaft encoders;

[0016] Figure 4 The diagram is a matching diagram of a coil spring and a transmission shaft 2 in a wire-drawing displacement sensor that can be adapted to a variety of shaft encoders.

[0017] In the figure: 1. Shell 1; 2. Wire outlet pipe; 3. Coil spring box; 4. Shell 2; 5. First bearing; 6. Second bearing; 7. Wire wheel; 8. Reducer sleeve; 9. Fastener 1; 10. Mounting plate; 11. Drive shaft 1; 12. Rotary encoder; 13. Wire rope; 14. Screw; 15. Coil spring; 16. Wire port assembly; 17. Encoder drive shaft; 18. Wire groove; 19. Drive shaft 2; 20. Slide groove; 21. Fastener 2. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] See also Figure 1-4 The present embodiment provides a wire-drawing displacement sensor that can be adapted to a variety of shaft encoders, including a housing 1, a housing 2 4 fixedly mounted on the housing 1, a reel 7 wound with a wire rope 13, and a coil spring 15 capable of resetting the reel 7. Preferably, the housing 2 4 is fixedly mounted on the housing 1 by screws 14, a reel 7 is rotatably arranged at the center of the inner cavity of the housing 1, one end of the wire rope 13 is fixed on the reel 7, and the other end of the wire rope 13 passes through the housing 1 to reach the outside, a transmission shaft 11 and a transmission shaft 2 19 are respectively arranged on both sides of the center of the reel 7, the transmission shaft 11 is rotatably connected to the center of the housing 2 4 through a first bearing 5, and the transmission shaft 2 19 is connected to the housing 1 through a second bearing 6. 1 is rotatably connected. Preferably, the wire wheel 7, the transmission shaft 11 and the transmission shaft 2 19 are set as one body to increase the stability of the device. The transmission shaft 11 is rotatably set at the center position of the housing 2 4. A reducing sleeve 8 is slidably set in the transmission shaft 11. A slide groove 20 is set on the outer side of the reducing sleeve 8. A fastener 21 is penetrated on the transmission shaft 11. The fastener 21 is slidably connected with the slide groove 20. Preferably, the fastener 21 is a fastening screw. A fastener 9 is set on the reducing sleeve 8. Preferably, the fastener 9 is a fastening screw. The inside of the reducing sleeve 8 is fixedly connected with the encoder transmission shaft 17 through the fastener 9. The encoder transmission shaft 17 is rotatably connected to the rotary encoder 12.

[0021] Furthermore, a mounting plate 10 is fixedly mounted on one end of the shell 2 4, a rotary encoder 12 is fixedly mounted on the mounting plate 10, an encoder transmission shaft 17 is rotatably connected to the rotary encoder 12, the encoder transmission shaft 17 passes through the center position of the mounting plate 10 and is fixedly connected to the reducer sleeve 8. Preferably, the mounting plate 10 is fixedly mounted on the shell 2 4 by screws 14, and the rotary encoder 12 is fixedly mounted on the shell 2 4 by screws 14.

[0022] Furthermore, a coil spring box 3 is fixedly installed on the outer side of the shell 1 away from the shell 2 4, and a coil spring 15 is arranged in the coil spring box 3. One end of the transmission shaft 2 19 passes through the center position of the shell 1 and is rotatably connected to the shell 1. One end of the transmission shaft 2 19 is fixedly connected to one end of the coil spring 15.

[0023] Furthermore, a wire outlet pipe 2 is provided on one side of the shell 1. Preferably, the position of the wire outlet pipe 2 is flush with the top position of the wire wheel 7. A wire outlet assembly 16 is provided at one end of the wire outlet pipe 2. Preferably, the wire outlet assembly 16 includes a connector, a wire rope limiter and a wire outlet head fixedly connected in sequence. One end of the connector is fixedly connected to the wire outlet pipe 2 to ensure the stability of the wire rope 13 when it is pulled out and improve the measurement accuracy. A wire groove 18 is opened in the wire outlet pipe 2, and the wire groove 18 is connected to the inner cavity of the shell 1. One end of the wire rope 13 reaches the outside through the wire groove 18 and the wire outlet assembly 16.

[0024] Working principle:

[0025] According to the diameter and length of the encoder transmission shaft 17 used, the reducer sleeve 8 is adjusted. According to the length of the encoder transmission shaft 17, the length of the reducer sleeve 8 extending from the transmission shaft 11 is adjusted. If the encoder transmission shaft 17 is too short, loosen the fastener 21 so that the reducer sleeve 8 can slide in the transmission shaft 11. Slide to a suitable position and tighten the reducer sleeve 8 again with the fastener 21 to ensure that the length of the reducer sleeve 8 and the encoder transmission shaft 17 will not slip due to being too short. Then tighten the reducer sleeve 8 with the fastener 21 again. To achieve the fixation of the reducing sleeve 8 and the encoder transmission shaft 17, pull the wire rope 13 to rotate the reel 7, and at the same time drive the transmission shaft 11 and the transmission shaft 2 19 to rotate. The rotation of the transmission shaft 11 drives the reducing sleeve 8 to rotate and then drives the encoder transmission shaft 17 to rotate, and transmits the rotation signal to the rotary encoder 12. The rotation of the transmission shaft 2 19 causes the coil spring 15 to deform. When the reel 7 needs to be reset, the external tension on the wire rope 13 is removed, and the coil spring 15 restores its original shape, thereby driving the transmission shaft 2 19 to reverse and reset the reel 7.

[0026] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and technical features of the present application. For those skilled in the art, solutions or features that belong to the prior art or common knowledge are not described in detail in the above embodiments.

[0027] In addition, the technical solutions of the present application are not limited to the above-mentioned embodiments. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A wire-drawn displacement sensor adaptable to a variety of shaft encoders, comprising a housing (1), a housing (4) fixedly mounted on the housing (1), a wire wheel (7) wound with a steel wire rope (13), and a coil spring (15) capable of resetting the wire wheel (7), characterized in that: The steel wire rope (13) passes through the housing 1 (1) to the outside. A transmission shaft 1 (11) and a transmission shaft 2 (19) are respectively arranged on both sides of the center position of the wire wheel (7). The transmission shaft 1 (11) is rotatably arranged at the center position of the housing 2 (4). The transmission shaft 2 (19) is rotatably arranged at the center position of the housing 1 (1). A reducing sleeve (8) is slidably arranged inside the transmission shaft 1 (11) through a sliding assembly. The reducing sleeve (8) is fixedly connected to the encoder transmission shaft (17) through a fastener 1 (9). The encoder transmission shaft (17) is rotatably connected to the rotary encoder (12). The rotary encoder (12) is fixedly connected to the housing 2 (4) through a mounting plate (10).

2. A wire-drawn displacement sensor that can be adapted to a variety of shaft encoders according to claim 1, characterized in that: The sliding assembly comprises a sliding groove (20) and a second fastener (21), wherein the sliding groove (20) is arranged outside the reducer sleeve (8), and the second fastener (21) penetrates the first transmission shaft (11) and is slidably connected to the sliding groove (20).

3. The wire-drawn displacement sensor that can be adapted to various shaft encoders according to claim 1, characterized in that: A mounting plate (10) is fixedly mounted on the second housing (4), a rotary encoder (12) is fixedly mounted on the mounting plate (10), an encoder transmission shaft (17) is rotatably connected to the rotary encoder (12), and the encoder transmission shaft (17) passes through the center of the mounting plate (10) and is fixedly connected to the reducer sleeve (8).

4. The wire-drawn displacement sensor that can be adapted to various shaft encoders according to claim 1, characterized in that: A coil spring box (3) is fixedly mounted on the outer side of the housing 1 (1) away from the housing 2 (4), a coil spring (15) is arranged inside the coil spring box (3), and one end of the transmission shaft 2 (19) passes through the center of the housing 1 (1) and is fixedly connected to one end of the coil spring (15).

5. The wire-drawn displacement sensor that can be adapted to various shaft encoders according to claim 1, characterized in that: A wire outlet pipe (2) is fixedly mounted on one side of the housing (1), a wire outlet assembly (16) is provided at one end of the wire outlet pipe (2), a wire groove (18) is provided in the wire outlet pipe (2), the wire groove (18) is communicated with the inner cavity of the housing (1), and one end of the steel wire rope (13) reaches the outside through the wire groove (18) and the wire outlet assembly (16).

6. The wire-drawn displacement sensor that can be adapted to various shaft encoders according to claim 1, characterized in that: The transmission shaft 1 (11) is rotatably connected to the center position of the housing 2 (4) via a first bearing (5), and the transmission shaft 2 (19) is rotatably connected to the housing 1 (1) via a second bearing (6).

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