CN105443942A - Rotation limiting device with angle of greater than 360 degrees and smaller than 720 degrees - Google Patents

Abstract

The invention discloses a rotation limiting device greater than 360° and less than 720°. The rotation limiting device can pass through the clockwise limiting mechanism and the counterclockwise limiting mechanism and stop block for different rotation lines on the rotation path of the revolving body. Cooperate with each other to realize the rotation limit of the revolving body in the range of more than 360° and less than 720°. It has the advantages of simple structure, reasonable design, and convenient use.

Description

A limit device for rotation greater than 360° and less than 720°

technical field

The present invention relates to a limit protection device, and in particular provides a position limit device with rotations greater than 360° and less than 720°.

Background technique

In some slewing equipment, due to work needs, the rotation angle of the slewing mechanism needs to reach a certain range greater than 360°. In order to prevent the cables and optical cables in the equipment from being twisted, it is necessary to set a limit protection mechanism. The limit protection mechanism currently used is a photoelectric rotary mechanism close to ±360°, which can only realize limit protection at a position close to ±360°, but there are still some turntables whose working range does not need to reach ±360° For an angle of 360°, another limit mechanism can achieve a working range greater than 360° and less than 540°, but it cannot meet the limit protection of 540°~720°. It can be seen that the existing limit mechanism has limitations in use.

Therefore, research and develop a kind of new limit mechanism, to remove the limitation of previous limit mechanism, become the problem that people demand to be solved urgently.

Contents of the invention

In view of this, the object of the present invention is to provide a rotation limiting device, which can realize the rotation limiting of 360°~720°, and relieve the limitation of the conventional limiting mechanism.

The technical solution provided by the present invention is specifically, a rotation limit device with a rotation angle greater than 360° and less than 720°, which is characterized in that it includes:

The fixed body 1 is provided with a slide groove 11 along the radial direction on its upper surface;

Rotary body 2, which is arranged above the fixed body 1, and can rotate relative to the fixed body 1, the lower surface of the rotary body 2 is respectively provided with a first rotation line and a second rotation line from the inside to the outside. Wire;

The clockwise limit mechanism 3 is fixedly arranged on the lower surface of the rotary body 2 along the second rotation line, and clockwise along the second rotation line, the clockwise limit mechanism 3 sequentially includes a counterclockwise dial Block 32 and clockwise mechanical limiter 31;

The counterclockwise limit mechanism 4 is fixedly arranged on the lower surface of the rotator 2 along the first rotation line, and clockwise along the first rotation line, the counterclockwise limit mechanism 4 sequentially includes counterclockwise mechanical Limit 41 and clockwise shift block 42;

Stop block 5, which is arranged in the chute 11 of the fixed body 1, and the stop block 5 can move along the slide under the movement of the clockwise shift block 42/counterclockwise shift block 32 The slot 11 slides and limits the clockwise mechanical limiter 31 /counterclockwise mechanical limiter 41 .

Preferably, the rotation limiting device further includes:

A clockwise reading sensor 6, which is fixedly arranged on one side of the chute 11 and located below the second rotation line;

The counterclockwise reading sensor 7 is fixedly arranged on the other side of the chute 11 and is located below the first rotation line.

Further preferably, the clockwise limit mechanism 3 further includes a clockwise electric limit 33, and the clockwise electric limit 33 is arranged in the clockwise direction of the clockwise mechanical limit 31;

The counterclockwise limit mechanism 4 further includes a counterclockwise electric limit 43 , and the counterclockwise electric limit 43 is arranged in the counterclockwise direction of the counterclockwise mechanical limit 41 .

Further preferably, the first rotation line and the second rotation line are both circumferential lines, and the radial difference between the second rotation line and the first rotation line is 1/5-1/10 of the radius of the rotating body 2 .

Further preferably: the clockwise mechanical limiter 31 is a hydraulic buffer.

Further preferably, the counterclockwise mechanical stop 41 is a hydraulic buffer.

Further preferably, the angle Φ between the clockwise limiting mechanism 3 and the counterclockwise limiting mechanism 4 is 0°<Φ<360°.

The rotation limiting device provided by the present invention is greater than 360° and less than 720°. Through the cooperation of the stop block, the clockwise limiting mechanism and the counterclockwise limiting mechanism, the limitation of the rotation angle range of the rotating body relative to the fixed body is realized. Specifically, when When the stop block slides to the bottom of the first rotation line along the chute, the stop block will limit the counterclockwise mechanical limit in the counterclockwise limit mechanism, and rotate the rotary body counterclockwise until the counterclockwise mechanical limit and stop. After the stoppers are connected, the counterclockwise mechanical limit position is reached. At this time, the rotating body is rotated clockwise, and the clockwise mechanical limiter and the counterclockwise shift block in the clockwise limit mechanism pass through the outside of the stopper in turn, and continue to move forward. Rotate the rotary body clockwise, and the clockwise shift block in the counterclockwise limit mechanism moves the stop block from the inside. Under the clockwise shift block, the stop block slides along the chute to the other end of the chute, and is located at the second end of the chute. Below the second rotation line, at this time, the stop block will limit the clockwise mechanical limit in the clockwise limit mechanism, and continue to rotate the rotary body clockwise until the clockwise mechanical limit in the clockwise limit mechanism is in line with the clockwise mechanical limit. When the stop blocks are connected, the rotating body stops rotating, realizing the function of its rotation limit.

The rotation limiting device provided by the invention has the advantages of simple structure, reasonable design, convenient use and the like.

Description of drawings

Fig. 1 is a structural schematic diagram of a rotation limiter greater than 360° and less than 720°;

Fig. 2 is a top view of Fig. 1, A is the edge line of the revolving body 2, B is the second rotation line, and C is the first rotation line;

Fig. 3 is a structural schematic diagram of another rotation limiting device greater than 360° and less than 720°;

Fig. 4 is a top view of Fig. 3, A is the edge line of the revolving body 2, B is the second rotation line, and C is the first rotation line.

detailed description

The present invention will be further explained with specific embodiments below, but it is not intended to limit the protection scope of the present invention.

Unless otherwise specified, the clockwise direction and the counterclockwise direction mentioned in the present invention refer to the angle of view of looking down on the rotary limiting device, ie viewed from top to bottom.

Referring to Fig. 1 and Fig. 2, it is a rotation limiting device of greater than 360° and less than 720°, including a fixed body 1, on the upper surface of the fixed body 1, a slide groove 11 is arranged radially, and above the fixed body 1, a rotary body 2, and the rotator 2 can rotate relative to the fixed body 1, and the lower surface of the rotator 2 is respectively provided with a first rotation line and a second rotation line from the inside to the outside. On the lower surface of the rotator 2, along the first The second rotation line is fixedly provided with a clockwise limit mechanism 3, and along the clockwise direction of the second rotation line, the clockwise limit mechanism 3 sequentially includes a counterclockwise dial 32 and a clockwise mechanical limit 31, wherein the clockwise mechanical The limiter 31 is installed on the lower surface of the rotary body 2 through the clockwise mechanical limiter seat 34. At the same time, on the lower surface of the rotary body 2, a counterclockwise limiter mechanism 4 is fixed along the first rotation line, and along the first The rotation line is clockwise, and the counterclockwise limit mechanism 4 sequentially includes a counterclockwise mechanical limiter 41 and a clockwise shift block 42, wherein the counterclockwise mechanical limiter 41 is installed on the bottom of the revolving body 2 through a counterclockwise mechanical limiter 44. On the surface, a stop block 5 is arranged in the chute 11 of the fixed body 1, and the stop block 5 can slide along the chute 11 under the toggle of the clockwise shift block 42/counterclockwise shift block 32, and the The clockwise mechanical limit 31/counterclockwise mechanical limit 41 is used for limiting.

Referring to Fig. 3 and Fig. 4, a clockwise judgment sensor 6 and a counterclockwise judgment sensor 7 are also provided in the rotation limit device, wherein the clockwise judgment sensor 6 is fixedly arranged on the chute 11 through a clockwise judgment sensor seat 61 One side, located below the second rotation line, the counterclockwise interpretation sensor 7 is fixedly arranged on the other side of the chute 11 through the counterclockwise interpretation sensor seat 71, located below the first rotation line; when the clockwise interpretation sensor 6 and When the stop block 5 in the chute 11 contacts, the clockwise reading sensor 6 generates a high-level signal to inform the upper computer that the stop block 5 will act as a limit to the clockwise limit mechanism 3; otherwise, when the counterclockwise reading sensor When 7 is in contact with the stop block 5 in the chute 11, the counterclockwise interpretation sensor 7 generates a high-level signal to inform the upper computer that the stop block 5 will limit the counterclockwise limit mechanism 4.

Referring to Fig. 3 and Fig. 4, a clockwise electric limit 33 is also provided in the clockwise limit mechanism 3, and the clockwise electric limit 33 is arranged in the clockwise direction of the clockwise mechanical limit 31; A counterclockwise electrical limiter 43 is also provided in the mechanism 4 , and the counterclockwise electrical limiter 43 is arranged in the counterclockwise direction of the counterclockwise mechanical limiter 41 .

Through the setting of the clockwise electric limit and counterclockwise electric limit, there are double limit protections in the rotary limit device, wherein, the first heavy limit protection is electric limit, and the second heavy limit protection It is a mechanical limit, and the specific working process is as follows: see Figure 4. At this time, the stopper 5 stops in front of the counterclockwise reading sensor 7, and the counterclockwise limit reading sensor 7 generates a high-level signal to inform the host computer to stop the stopper 5 will act on the counterclockwise limit, the rotary body 2 rotates counterclockwise, the counterclockwise electric limit 43 in the counterclockwise limit mechanism 4 first passes the stop block 5, and when it is located above the stop block 5, it will generate High-level in-position signal. At this time, the rotary body 2 reaches the counterclockwise electric limit position. When the host computer receives the high-level in-position signal, it will control the rotary body 2 to stop rotating. However, if the electric limit position fails, the device will The second heavy mechanical limit protection is also provided, and the rotary body 2 will continue to rotate counterclockwise until the counterclockwise mechanical limit 41 in the counterclockwise limit mechanism 4 is connected to the stop block 5, and the stop block 5 blocks The rotation of the rotary body 2 is stopped. At this time, the rotary body 2 reaches the counterclockwise mechanical limit position, and the rotary body 2 is rotated clockwise. In the clockwise limit mechanism 3, the clockwise electric limit position 33, the clockwise mechanical limit position 31 and the counter The clockwise shifting block 32 passes through the outside of the stop block 5 successively without contact with the stop block 5, the rotary body 2 continues to rotate clockwise, and the clockwise shift block 42 in the counterclockwise limit mechanism 4 touches the inner side of the stop block 5, And the stop block 5 is moved outward along the chute 11, so that the stop block 5 stops in front of the clockwise interpretation sensor 6, and the clockwise interpretation sensor 6 generates a high-level signal to inform the upper computer that the stop block 5 will be clockwise. The clockwise limit works, the rotary body 2 continues to rotate clockwise, the counterclockwise mechanical limit 41 and the counterclockwise electric limit 43 in the counterclockwise limit mechanism 4 pass through the inside of the stop block 5 in turn, and do not contact the stop block 5 Contact, the rotary body 2 continues to rotate clockwise until the clockwise electric limiter 33 in the clockwise limit mechanism 3 passes above the stop block 5, generating a high-level in-position signal, at this time the rotary body 2 reaches the clockwise electric limiter position, when the upper computer receives a high-level in-position signal, the upper computer will control the rotary body 2 to stop rotating, but if the electric limit fails, the device is also equipped with a second mechanical limit protection, and the rotary body 2 will continue to rotate. Carry out clockwise rotation until the clockwise mechanical limit 31 in the clockwise limit mechanism 3 is connected to the stop block 5, and the stop block 5 hinders the rotation of the rotary body 2, and now the rotary body 2 reaches the clockwise mechanical limit bit position. The rotary limit device has double limit protection, which effectively reduces the failure rate of the device.

In this embodiment, both the first rotation line and the second rotation line are designed as circular lines, and the radial difference between the second rotation line and the first rotation line is 1/5-1/10 of the radius of the rotating body 2 , the radial difference refers to the difference between the radius of the first line of rotation and the radius of the second line of rotation.

In this embodiment, both the clockwise mechanical limiter 31 and the counterclockwise mechanical limiter 41 use hydraulic buffers, and the use of hydraulic buffers has a certain buffering effect and reduces the impact on the stop block on the device.

The rotation limiting device provided by this embodiment can realize the rotation of the rotation device within the range of 360°+Φ. Since the rotation range required by the rotation device is greater than 360° and less than 720° in actual use, the clockwise limit The angle Φ between the mechanism 3 and the counterclockwise limiting mechanism 4 is designed to be 0°<Φ<360°.

The above are only preferred implementations of the present invention, and it should be noted that the above preferred implementations should not be regarded as limiting the present invention, and the scope of protection of the present invention should be based on the scope defined in the claims. For those skilled in the art, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (7)

1. A rotation limit device greater than 360° and less than 720°, characterized in that it includes: The fixed body (1), the upper surface of which is provided with a sliding groove (11) along the radial direction; The rotator (2) is arranged above the fixed body (1) and can rotate relative to the fixed body (1). The lower surface of the rotator (2) is respectively provided with the first rotation line and the second rotation line; A clockwise limiting mechanism (3), which is fixedly arranged on the lower surface of the rotating body (2) along the second rotating line, and clockwise along the second rotating line, the clockwise limiting mechanism (3) ) sequentially includes a counterclockwise shift block (32) and a clockwise mechanical limiter (31); A counterclockwise limiting mechanism (4), which is fixedly arranged on the lower surface of the rotating body (2) along the first rotating line, and clockwise along the first rotating line, the counterclockwise limiting mechanism (4 ) sequentially includes a counterclockwise mechanical limit (41) and a clockwise shift block (42); The stop block (5), which is arranged in the chute (11) of the fixed body (1), and the stop block (5) is on the clockwise shift block (42)/counterclockwise shift block ( 32) can slide along the chute (11), and limit the clockwise mechanical limit (31)/counterclockwise mechanical limit (41). 2. According to claim 1, the rotation limiting device greater than 360° and less than 720° is characterized in that it also includes: The clockwise reading sensor (6), which is fixedly arranged on one side of the chute (11), is located below the second rotation line; The counterclockwise reading sensor (7), which is fixedly arranged on the other side of the chute (11), is located below the first rotation line. 3. According to claim 2, the rotation limiting device greater than 360° and less than 720° is characterized in that: The clockwise limit mechanism (3) also includes a clockwise electric limit (33), and the clockwise electric limit (33) is set in the clockwise direction of the clockwise mechanical limit (31); The counterclockwise limit mechanism (4) further includes a counterclockwise electric limit (43), and the counterclockwise electric limit (43) is arranged in the counterclockwise direction of the counterclockwise mechanical limit (41). 4. According to claim 1, the rotation limiting device greater than 360° and less than 720° is characterized in that: the first rotation line and the second rotation line are both circumferential lines, and the second rotation line is the same as the first rotation line The radial difference of the lines is 1/5-1/10 of the radius of the body of revolution (2). 5. According to claim 1, the rotation limit device of greater than 360° and less than 720° is characterized in that: the clockwise mechanical limiter (31) is a hydraulic buffer. 6. According to claim 1, the rotation limit device of greater than 360° and less than 720° is characterized in that: the counterclockwise mechanical limiter (41) is a hydraulic buffer. 7. According to claim 1, the rotation limiting device greater than 360° and less than 720° is characterized in that: the angle between the clockwise limiting mechanism (3) and the counterclockwise limiting mechanism (4) is Φ , and 0°<Φ<360°.