Limiting-angle measurement integrated device

Abstract

The invention discloses a limiting-angle measuring integrated device which comprises a conversion support, the conversion support is composed of a rotating support and a fixed support, the rotating support and the fixed support are arranged in a mutual rotating mode, and a limiting mechanism is arranged on the conversion support and used for limiting the rotating angle of the rotating support and the rotating angle of the fixed support; an auxiliary mounting seat is arranged on the fixed support, a rotation angle encoder is arranged at the upper end of the auxiliary mounting seat, and the rotary support is connected with a rotor of the rotation angle encoder; high-precision measurement and limiting functions of the rotating part are integrated, the structure is compact, and the space utilization rate is high.

Description

Technical Field

[0001] The invention relates to the technical field of machinery and relates to a position limiting and angle measuring integrated device. Background Art

[0002] With the development of automation control technology, accurate control of the limit and angle measurement of rotating parts has become a key measure to improve equipment performance and safety. Existing limit mechanisms often control the rotation range and angle of rotating parts through the interaction of mechanical parts. Although they have the characteristics of simple structure and high reliability, they have problems such as slow response speed, poor flexibility and low accuracy, which limit their application in high-precision control of rotating parts.

[0003] The mover and stator of the rotary angle encoder are connected to the rotating shaft and the fixed frame of the rotating part respectively, and the angle difference between the two is measured and converted into an electrical signal output. However, in engineering practice, the phenomenon of static-dynamic conversion between the rotating shaft and the rotating frame is often encountered, and the angle measurement is difficult to output stably. In order to meet the needs of precise limit and angle measurement of rotating parts, the limit device and angle measurement device are often installed in different parts.

[0004] But there are still some problems:

[0005] 1. Because it is installed in different parts, it is easy to cause the errors of mechanical parts and measurement errors to accumulate further, and there are problems such as cumbersome installation and large space occupation;

[0006] 2. When working outdoors in harsh environments such as wind, frost, rain, snow, and ice, the limit devices and angle measuring devices are difficult to meet the high-precision and high-reliability requirements for measuring rotating parts. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides an integrated limit-angle measurement device.

[0008] The present invention is achieved through the following technical solutions.

[0009] The present invention provides an integrated limit-angle measurement device, comprising a conversion bracket, wherein the conversion bracket is composed of a rotating bracket and a fixed bracket, the rotating bracket and the fixed bracket are arranged to rotate relative to each other, and a limit mechanism is arranged on the conversion bracket to limit the rotation angle of the rotating bracket and the fixed bracket; an auxiliary mounting seat is arranged on the fixed bracket, a rotation angle encoder is arranged on the upper end of the auxiliary mounting seat, and the rotating bracket is connected to the rotor of the rotation angle encoder.

[0010] Preferably, the rotating bracket and the fixed bracket are both annular, the rotating bracket is rotatably sleeved on the outer peripheral side of the fixed bracket, and the axes of the rotating bracket and the fixed bracket are arranged to overlap.

[0011] Preferably, the limiting mechanism comprises two blocking arms, one end of each of the two blocking arms in the length direction is fixedly connected to the center of the fixed bracket, and an acute angle is formed between the two blocking arms;

[0012] Two conductive blocks, the two conductive blocks are respectively fixedly connected to one end of the two blocking arms away from the center of the fixed bracket, and the contact surfaces of the two conductive blocks are arranged back to back between the two blocking arms;

[0013] Two proximity switches are fixedly connected to the upper surface of the rotating bracket, and the movement tracks of the two conductive blocks are located between the contact surfaces of the two proximity switches, so that the contact surfaces of the two conductive blocks correspond to the contact surfaces of the two proximity switches respectively.

[0014] Preferably, a first arc-shaped plate is fixedly connected to the rotating bracket, a protruding rotating shaft is fixedly connected to the first arc-shaped plate, and the protruding rotating shaft is connected to the rotor of the rotary angle encoder through a flexible coupling.

[0015] Preferably, a second arc-shaped plate is fixedly connected to the fixing bracket, and the auxiliary mounting seat is mounted on the second arc-shaped plate.

[0016] Preferably, a protective cover is sleeved on the outer periphery of the rotating bracket, a cover plate is sealedly provided on the upper end of the protective cover, and the cover plate is placed on the upper end of the rotary angle encoder.

[0017] Preferably, an O-shaped rubber sealing ring is sleeved on the outer periphery of the rotating bracket, and the O-shaped rubber sealing ring presses against the inner ring of the protective cover.

[0018] Preferably, a window is provided on the side of the protective cover, a detachable sealing plate is provided in the window, and a wire outlet hole is provided on the detachable sealing plate.

[0019] Preferably, a butterfly sealing ring is sleeved on the detachable sealing plate.

[0020] Preferably, the conductive block is made of conductive rubber material.

[0021] The beneficial effects of the present invention are:

[0022] 1. The designed conversion bracket makes the rotating bracket fixedly connected to the rotating bracket, and the fixed bracket fixedly connected to the fixed shaft. By exchanging the original engineering intermediate shaft rotating and the external shell fixed phenomenon, the dynamic-static conversion phenomenon in the applicable engineering structure is matched. The rotary angle encoder can accurately measure the rotating parts through the concentric conversion of the rotating direct and fixed bracket, which can directly and effectively reduce the measurement error and improve the measurement accuracy.

[0023] 2. A limit mechanism is installed on the conversion bracket to limit the rotation angle of the rotating frame and the fixed shaft in the rotating part. The limit mechanism and the angle measuring device are integrated to achieve high-precision measurement of the rotating part and integration of the limit function. The structure is compact and the space utilization rate is high.

[0024] 3. The protective cover, cover plate, O-ring, removable sealing plate and butterfly sealing ring are used together to form the protective components, which have a good sealing effect on the internal structure and build a sealed environment for the limit-angle measurement device. It is suitable for harsh outdoor environments and ensures that the rotary angle encoder can work normally in harsh industrial environments, giving full play to its high precision and high reliability characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the installation structure of the present invention;

[0026] Figure 2 A schematic diagram of the internal structure of the present invention;

[0027] Figure 3 Schematic diagram of the planing structure of the limiting mechanism of the present invention;

[0028] Figure 4 Schematic diagram of the planing structure of the angle measuring mechanism of the present invention.

[0029] In the figure: 1-O-ring; 2-limiting mechanism; 3-butterfly sealing ring; 4-protective cover; 5-rotary angle encoder; 6-auxiliary mounting seat; 7-conversion bracket; 8-detachable sealing plate; 9-rotating frame; 10-fixed shaft; 11-rotating bracket; 12-blocking arm; 13-conductive block; 14-fixed bracket; 15-proximity switch; 16-flexible coupling; 17-limiting-angle measuring device; 18-first arc plate; 19-second arc plate; 20-protruding rotating shaft; 21-cover plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In engineering practice, most of the measurement angles and limit positions are usually rotated by the central axis and the outer shell is fixed. However, in some specific environments, there is also a phenomenon that the central axis is fixed and the outer shell rotates. In the embodiment of the present application, refer to Figure 1 That is, the rotating frame 9 rotates around the fixed axis 10, and the limit-angle measuring device 17 is installed on the rotating part of the rotating frame 9 and the fixed axis 10 to realize the angle measurement and limit of the rotating part.

[0033] In the embodiments of this application, refer to Figure 2 and Figure 3 The limit-angle measuring device 17 specifically includes a conversion bracket 7, which is composed of a rotating bracket 11 and a fixed bracket 14. The rotating bracket 11 and the fixed bracket 14 are both annular. The rotating bracket 11 is rotatably sleeved on the outer peripheral side of the fixed bracket 14, and the axes of the rotating bracket 11 and the fixed bracket 14 are overlapped. A plurality of mounting holes are opened on the rotating bracket 11, and a plurality of bolts are passed through the mounting holes and threadedly connected to the rotating frame 9, so that the rotating bracket 11 is fixedly connected to the rotating frame 9, and the fixed bracket 14 is fixedly connected to the fixed shaft 10, so as to ensure that the rotation axis of the rotating bracket 11 and the rotation axis of the rotating frame 9 coincide with the axis of the fixed shaft 10, thereby avoiding the increase of measurement errors.

[0034] In the embodiment of the present application, refer to Figure 3 A limiting mechanism 2 is provided on the conversion bracket 7 to limit the rotation angle of the rotating bracket 11 and the fixed bracket 14; the limiting mechanism 2 includes two blocking arms 12, one end of the two blocking arms 12 in the length direction is fixedly connected to the center of the fixed bracket 14, and an acute angle is formed between the two blocking arms 12, which is convenient for the two blocking arms 12 to rotate at the same time and improves stability; T-shaped grooves are provided on opposite sides of one end of the two blocking arms 12 away from the center of the fixed bracket 14, and two conductive blocks 13 are respectively clamped in the two T-shaped grooves, so that the two conductive blocks 13 are fixed at the ends of the two blocking arms 12, and the contact surfaces of the two conductive blocks 13 are arranged opposite to each other between the two blocking arms 12;

[0035] Two proximity switches 15 are fixedly connected to the upper surface of the rotating bracket 11 , and the movement tracks of the two conductive blocks 13 are located between the contact surfaces of the two proximity switches 15 , so that the contact surfaces of the two conductive blocks 13 correspond to the contact surfaces of the two proximity switches 15 , respectively.

[0036] The conductive block 13 is made of conductive rubber material, and the relative distance of the proximity switch 15 on the rotating bracket 11 is adjusted. When the conductive block 13 is touched, the proximity switch 15 outputs a limit signal, which can effectively control the range of the rotating part. Under certain extreme working conditions, when the conductive block 13 collides with the proximity switch 15, the conductive block 13 with lower stiffness can also play a role of buffer protection to prevent damage to the proximity switch 15.

[0037] In the embodiments of this application, refer to Figure 2 , Figure 3 and Figure 4 A second arc plate 19 is fixedly connected to the fixed bracket 14, and the auxiliary mounting seat 6 is installed on the second arc plate 19. The upper end of the auxiliary mounting seat 6 is threadedly connected to the rotary angle encoder 5 through a bolt. The auxiliary mounting seat 6 is used to increase the connection area of ​​the rotary angle encoder 5 and achieve stable installation of the rotary angle encoder 5. A first arc plate 18 is fixedly connected to the rotating bracket 11. A protruding rotating shaft 20 is fixedly connected to the first arc plate 18. The protruding rotating shaft 20 is connected to the rotor of the rotary angle encoder 5 through a flexible coupling 16. The flexibility of the flexible coupling is used to weaken the axial vibration, so that the rotor of the rotary angle encoder 5 is concentric with the rotation axis of the rotating bracket 11, thereby improving the measurement accuracy of the rotary angle encoder 5.

[0038] The conversion bracket 7, the limiting mechanism 2, the auxiliary mounting seat 6 and the rotary angle encoder 5 are integrated and installed, which not only avoids the mechanical error caused by installing the limiting mechanism 2 and the rotary angle encoder 5 in different positions and improves the measurement accuracy, but also is beneficial to the space utilization and makes the structure more compact.

[0039] In the embodiments of this application, refer to Figure 2 A protective cover 4 is sleeved on the outer periphery of the rotating bracket 11, and an O-shaped rubber sealing ring 1 is also sleeved on the outer periphery of the rotating bracket 11. The O-shaped rubber sealing ring 1 is pressed against the inner ring of the protective cover 4 to seal the gap between the outer periphery of the rotating bracket 11 and the inner ring of the protective cover 4, thereby enhancing the sealing performance and preventing the entry of external impurities; a cover plate 21 is sealed on the upper end of the protective cover 4, and the cover plate 21 is placed on the upper end of the rotary angle encoder 5, so that the internal structure on the conversion bracket 7 is sealed in the protective cover 4 and the cover plate 21, thereby constructing a sealed environment for the limit-angle measuring device 17, thereby ensuring that the rotary angle encoder 5 can work normally even in harsh industrial environments, giving full play to its high precision and high reliability characteristics.

[0040] Reference Figure 2 A window is provided on the side of the protective cover 4, in which a removable sealing plate 8 is arranged, and a wire outlet hole is provided on the removable sealing plate 8 for connecting the lines. A butterfly sealing ring 3 is sleeved on the removable sealing plate 8 to prevent external sand, dust, rain and fog from entering the equipment and enhance the sealing of the device.

[0041] The overall structure has good interchangeability and can be disassembled and combined according to different working conditions.

[0042] The working principle of this embodiment is as follows: the rotating bracket 11 is installed and fixed on the rotating frame 9, and the fixed bracket 14 is fixed on the fixed shaft 10. The rotating frame 9 is rotated to drive the rotating bracket 11 to rotate, and the rotating bracket 11 and the fixed bracket 14 rotate relative to each other. The two proximity switches 15 and the two blocking arms 12 rotate relative to each other, so that the conductive block 13 moves relative to each other between the two proximity switches 15, and the measuring range of the conductive block 13 is limited, thereby limiting the relative rotation angle of the rotating frame 9 and the fixed shaft 10, and effectively controlling the rotation angle of the rotating frame 9 on the fixed shaft 10. At the same time, the rotation of the rotating bracket 11 drives the protruding rotating shaft 20 to rotate, and drives the flexible coupling 16 to rotate, thereby driving the rotor of the rotary angle encoder 5 to rotate. The rotary angle encoder 5 accurately measures the rotation angle of the rotating frame 9, realizing the integration of high-precision measurement and limit functions, with a compact structure and high space utilization.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A limit-angle measurement integrated device, characterized in that: The invention comprises a conversion bracket (7), wherein the conversion bracket (7) is composed of a rotating bracket (11) and a fixed bracket (14), wherein the rotating bracket (11) and the fixed bracket (14) are arranged to rotate relative to each other, and a limiting mechanism (2) is arranged on the conversion bracket (7) to limit the rotation angle of the rotating bracket (11) and the fixed bracket (14); an auxiliary mounting seat (6) is arranged on the fixed bracket (14), and a rotation angle encoder (5) is arranged at the upper end of the auxiliary mounting seat (6); and the rotating bracket (11) is connected to the rotor of the rotation angle encoder (5).

2. A position limiting and angle measuring integrated device as claimed in claim 1, characterized in that: The rotating bracket (11) and the fixed bracket (14) are both annular, the rotating bracket (11) is rotatably sleeved on the outer peripheral side of the fixed bracket (14), and the axes of the rotating bracket (11) and the fixed bracket (14) are arranged to overlap.

3. The position limiting and angle measuring integrated device according to claim 1, characterized in that: The limiting mechanism (2) comprises two blocking arms (12), one end of the two blocking arms (12) in the length direction is fixedly connected to the center of the fixed bracket (14), and an acute angle is formed between the two blocking arms (12); Two conductive blocks (13), the two conductive blocks (13) are respectively fixedly connected to one end of the two blocking arms (12) away from the center of the fixed bracket (14), and the contact surfaces of the two conductive blocks (13) are arranged back to back between the two blocking arms (12); Two proximity switches (15) are fixedly connected to the upper surface of the rotating bracket (11), and the movement tracks of the two conductive blocks (13) are located between the contact surfaces of the two proximity switches (15), so that the contact surfaces of the two conductive blocks (13) correspond to the contact surfaces of the two proximity switches (15) respectively.

4. The position limiting and angle measuring integrated device according to claim 1, characterized in that: The rotating bracket (11) is fixedly connected to a first arc-shaped plate (18), and a protruding rotating shaft (20) is fixedly connected to the first arc-shaped plate (18). The protruding rotating shaft (20) is connected to the rotor of the rotary angle encoder (5) through a flexible coupling (16).

5. The position limiting and angle measuring integrated device according to claim 1, characterized in that: A second arc-shaped plate (19) is fixedly connected to the fixed bracket (14), and the auxiliary mounting seat (6) is mounted on the second arc-shaped plate (19).

6. The position limiting and angle measuring integrated device according to claim 1, characterized in that: The outer periphery of the rotating bracket (11) is provided with a protective cover (4), the upper end of the protective cover (4) is sealed with a cover plate (21), and the cover plate (21) is placed on the upper end of the rotary angle encoder (5).

7. The position limiting and angle measuring integrated device according to claim 6, characterized in that: An O-shaped rubber sealing ring (1) is sleeved on the outer periphery of the rotating bracket (11), and the O-shaped rubber sealing ring (1) is pressed tightly against the inner ring of the protective cover (4).

8. The position limiting and angle measuring integrated device according to claim 6, characterized in that: A window is provided on the side of the protective cover (4), a detachable sealing plate (8) is arranged in the window, and a wire outlet hole is provided on the detachable sealing plate (8).

9. The position limiting and angle measuring integrated device according to claim 8, characterized in that: A butterfly-shaped sealing ring (3) is sleeved on the detachable sealing plate (8).

10. The position limiting and angle measuring integrated device according to claim 3, characterized in that: The conductive block (13) is made of conductive rubber material.

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