Encoder mounting and connecting device

Abstract

The utility model discloses an encoder installing and connecting device, which comprises a driving disc and a transmission mechanism, the driving disc is connected with a tested part, the transmission mechanism comprises two driving rods and a driven rod, the two driving rods are respectively arranged on one side of the driving disc far away from the tested part through a sliding adjusting mechanism, one end of the driven rod is arranged between the two driving rods, and the other end of the driven rod is arranged on the driven rod. According to the utility model, the problem that the measurement precision cannot be ensured when the encoder is connected by adopting an existing transmission rod in a non-coaxial manner is solved.

Description

Technical Field

[0001] The utility model relates to the field of oil and natural gas drilling, in particular to an encoder installation and connection device. Background Art

[0002] Robots in the petroleum industry usually operate in an environment with large loads, large shocks and vibrations. Some robots need to measure the rotation of large-load mechanisms, which requires the use of encoders. Due to space limitations, alternating loads and other reasons, in order to ensure the service life of the encoder, the main shaft of the encoder and the measured component are preferably connected to the same axis with the transmission rod.

[0003] After searching, the Chinese utility model patent with the announcement number of CN211398328U discloses an eccentric coupling that is convenient for encoder speed measurement, including a transmission rod and a rotating member. The transmission rod is a cylinder with a smooth surface. One end of the transmission rod is connected to the driving shaft, and the other end is connected to the rotating member; the rotating member is composed of a clamping part and a connecting part. The clamping part is provided with a U-shaped groove for connecting to the transmission rod and preventing the transmission rod from detaching from the clamping part. The bottom of the U-shaped groove is integrally formed with the connecting part, and the connecting part is provided with a limit hole that can be locked with the encoder main shaft.

[0004] The above patent still has shortcomings: if the measured component vibrates or impacts, the transmission rod will vibrate while rotating. The vibration and friction will cause wear at the contact between the transmission rod and the U-shaped groove, resulting in backlash at the contact or increasing the backlash, causing errors. This error is particularly evident when measuring components whose rotation direction may change. Utility Model Content

[0005] The utility model aims to provide a mounting and connecting device which can improve the measuring accuracy of an encoder when the encoder is mounted in a transmission rod type.

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

[0007] An encoder installation and connection device, characterized in that it includes a driving disk and a transmission mechanism, the driving disk is connected to the component to be measured, the transmission mechanism includes a driving rod and a driven rod, there are two driving rods and they are respectively installed on the side of the driving disk away from the component to be measured through a sliding adjustment mechanism, one end of the driven rod is located between the two driving rods, and the other end is fixedly installed on the encoder main shaft.

[0008] Preferably, the sliding adjustment mechanism comprises two progressive sliding grooves arranged at the connection between the driving disk and the two driving rods and a sliding block installed in the sliding groove, and a driving rod mounting hole is provided on the sliding block for mounting the driving rod.

[0009] Preferably, a positioning screw hole and a driving rod fastening screw hole are provided on the sliding block.

[0010] Preferably, the encoder is mounted in an encoder mounting seat.

[0011] Preferably, a coupling and a coupling support are provided between the driving disk and the shaft-like component to be measured. One end of the coupling is installed on the rotating shaft of the shaft-like component to be measured, and the other end is connected to the driving disk. The connection method is key connection, and the coupling and the coupling support are connected by a sliding sleeve.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] By setting a sliding adjustment mechanism on the driving disk, the distance between the two driving rods can be manually adjusted, which can eliminate the backlash between the driving rod and the driven rod caused by friction or other reasons to the greatest extent, thereby improving the measurement accuracy of the encoder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model applied to the connection of shaft components;

[0015] Figure 2 It is a structural schematic diagram of the drive disc and transmission mechanism of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the connection between the slider and the drive disc of the utility model;

[0017] Figure 4 for Figure 3 A top view of

[0018] Figure 5 It is a structural schematic diagram of the cross section of the driven rod mounting hole of the connecting part of the utility model;

[0019] Figure 6 The utility model is a schematic diagram of the structure of the connection of non-axis components.

[0020] In the figure: 1-driving plate, 2-driving rod, 3-driven rod, 4-slide groove, 5-slider, 51-driving rod mounting hole, 52-positioning screw hole, 53-driving rod fastening screw hole, 6-encoder mounting seat, 61-protective cover, 62-high-efficiency shock-absorbing pad, 7-coupling, 8-coupling support, 9-connecting part, 91-driven rod mounting hole, 92-driven rod fastening screw hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment 1:

[0023] like Figure 1-Figure 5As shown, this is the installation method of the utility model when applied to shaft components. First, the coupling 7 is axially installed at the rotating axis position of the measured shaft through a key connection, so that it can rotate with the measured component, and the coupling 7 is connected with a sleeve through the coupling support 8, allowing the coupling 7 to have a small range of radial displacement in the limited hole of the coupling support 8. The coupling support 8 is set away from the measured component. The purpose of this is to limit the radial vibration transmitted from the measured component while increasing the service life of the device. The driving disc 1 is connected to the rear of the coupling 7 by a key, and the connection point is located at the center of the driving disc 1. Two progressive slide grooves 4 are opened on the other side of the driving disc 1. A slider 5 is installed in the slide groove 4. Two driving rods 2 are installed in the driving rod mounting holes 51, and are fixed with set screws in the driving rod set screw holes 53. A positioning screw hole 52 is set on the slider 5. The hexagon socket screws installed therein are manually tightened or loosened to make the slider 5 in a fixed position or a slidable state. The distance between the two driving rods 2 can be adjusted by adjusting the position of the two sliders 5, thereby eliminating or reducing the gap between the driving rod 2 and the driven rod 3, which can maximize the immediacy and accuracy of torque transmission.

[0024] One end of the driven rod 3 is clamped by two driving rods 2, and both the driving rod 2 and the driven rod 3 extend outward at the clamping position, so that when the vibration or impact encountered by the two rods is converted into sliding between the driving rod 2 and the driven rod 3, the driving rod 2 and the driven rod 3 will not be separated at the clamping position. The other end of the driven rod 3 is installed on the connecting part 9 through the driven rod mounting hole 91, and a fixing screw is installed in the driven rod fixing screw hole 92 to fix it. The connecting part 9 is fixedly installed on the encoder main shaft.

[0025] The encoder is installed in the encoder mounting seat 6. To further protect the encoder, a protective cover 61 and a high-efficiency shock-absorbing pad 62 are provided. To ensure smooth operation and easy measurement, the rotating parts should be roughly located on the same rotating axis during installation. If the installation conditions do not allow or there are installation errors, the data can be processed by a computer before use.

[0026] Embodiment 2:

[0027] like Figure 6 As shown, the utility model provides another installation method for the installation and connection of irregular rotating parts and encoders, which can measure the angle and angular velocity data of the measured part reciprocating within a certain angle. This solution does not use the coupling 7 and the coupling support 8, and four bolt connection holes are opened on the driving disk 1. The driving disk 1 is directly installed on the end face of the measured part using anti-loosening bolts, and a longer driving rod 2 and driven rod 3 are used. The rest of the settings refer to Example 1. At this time, the rotation center axis of the measured part can be a fixed axis, which does not need to rotate with the measured component, and is particularly suitable for measuring the rotation data of heavy rotating components that rotate back and forth.

[0028] Here’s how it works:

[0029] The measured object first drives the driving disk 1 to rotate around its rotation axis. Since the slider 5 is fixed in the slide groove 4 on the driving disk, the driving rod 2 will move with the driving disk 1. At the same time, the driving rod 2 drives the driven rod 3 to rotate around the encoder main shaft. Finally, the driven rod 3 drives the encoder main shaft to rotate, thereby outputting the rotation data. The positions of the two sliders 5 are adjusted regularly to eliminate the backlash between the driving rod 2 and the driven rod 3 to ensure the measurement accuracy.

[0030] The above are only preferred embodiments of the present invention.

Claims

1. An encoder installation and connection device, characterized in that: The invention comprises a driving disk (1) and a transmission mechanism, wherein the driving disk (1) is connected to a component to be measured, and the transmission mechanism comprises a driving rod (2) and a driven rod (3), wherein the driving rod (2) has two driving rods and are respectively mounted on a side of the driving disk (1) away from the component to be measured through a sliding adjustment mechanism, and one end of the driven rod (3) is located between the two driving rods (2), and the other end is fixedly mounted on the encoder main shaft.

2. An encoder installation and connection device according to claim 1, characterized in that: The sliding adjustment mechanism comprises two progressive sliding grooves (4) arranged at the connection between the driving disk (1) and the two driving rods (2) and a sliding block (5) installed in the sliding groove (4); the sliding block (5) is provided with a driving rod mounting hole (51) for mounting the driving rod (2).

3. An encoder installation and connection device according to claim 2, characterized in that: The slide block (5) is provided with a positioning screw hole (52) and a drive rod fixing screw hole (53).

4. An encoder installation and connection device according to claim 1, characterized in that: The encoder is mounted in an encoder mounting seat (6).

5. The encoder installation and connection device according to claim 1, characterized in that: A coupling (7) and a coupling support (8) are provided between the driving disk (1) and the shaft-like component to be measured. One end of the coupling (7) is mounted on the rotating shaft of the shaft-like component to be measured, and the other end is connected to the driving disk (1). The connection method is a key connection. The coupling (7) and the coupling support (8) are connected by a sliding sleeve.

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