A closed loop runaway indexing locking device

Abstract

The utility model relates to mechanical protection field discloses a kind of transposition locking devices for closed-loop out of control, including support platform, the middle part of the lower surface of support platform is provided with drive unit, the output shaft of drive unit is fixedly connected with rotating shaft, the top of rotating shaft is provided with inertia unit, the upper surface of support platform is fixedly connected with protective housing, the upper portion of support platform is provided with locking assembly;The locking assembly includes high-speed motor, the rear surface of protective housing is provided with high-speed motor, the output shaft of high-speed motor is fixedly connected with transmission shaft.The utility model in, under the action of two groups of symmetrical distribution's locking assembly, high-speed motor built-in sensor and helical guide groove transmission structure, can when closed-loop out of control quickly drive extruding piece from inertia unit front and rear two ends synchronous locking, solve the single reset locking mode position limited, large current out of control difficult timely locking problem, enhanced the practicability of device.

Description

Technical Field

[0001] This utility model relates to the field of mechanical protection, and in particular to a rotation locking device for closed-loop loss of control. Background Technology

[0002] When the indexing device is working for a long time, it may experience closed-loop loss of control due to drive problems, external interference, etc., which may lead to mechanical limit damage, wire harness breakage, positioning failure and other faults, resulting in failure of online calibration.

[0003] Conventional indexing runaway protection devices sometimes employ a direct open-loop method. While this method can protect the electrical components of the system, the presence of inertial forces can lead to wire harness breakage and make it difficult to eliminate online calibration errors. Other indexing runaway protection devices use a single-position reset locking method. Although the locking accuracy is high, the locking position of the inertial unit is limited, and the locking time is long. In the event of a high-current closed-loop runaway, it is impossible to lock accurately and in a timely manner, resulting in poor practical performance. Furthermore, the workpiece in the locking device that comes into contact with the inertial unit is prone to wear after prolonged use, and replacement requires disassembly of the locking device, which is cumbersome. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a rotation locking device for closed-loop runaway, which aims to improve the problems of wire harness breakage and difficulty in eliminating timing errors of wire markers caused by open-loop protection in the prior art, as well as the problems of limited position, long locking time, difficulty in timely locking due to high current runaway, and troublesome replacement after wear of the contact workpiece in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rotation locking device for closed-loop runaway, comprising a support platform, a drive unit disposed in the middle of the lower surface of the support platform, a rotating shaft fixedly connected to the output shaft of the drive unit, an inertial unit disposed at the top of the rotating shaft, a protective shell fixedly connected to the upper surface of the support platform, and a locking component disposed on the upper part of the support platform. The locking assembly includes a high-speed motor disposed on the rear surface of the protective housing. The output shaft of the high-speed motor is fixedly connected to a transmission shaft. A positioning block is fixedly connected to the front part of the right surface of the transmission shaft. A guide shaft is sleeved on the outer wall of the transmission shaft. A guide groove is formed on the inner wall of the guide shaft. A sleeve is sleeved on the front end of the outer wall of the guide shaft. A mounting plate is fixedly connected to the front surface of the sleeve. An extrusion member is fixedly connected to the front surface of the mounting plate.

[0006] As a further description of the above technical solution: Fastening bolts are inserted into both the left and right sides of the sleeve, and the fastening bolts pass through and are threadedly connected to the left and right sides of the guide shaft.

[0007] As a further description of the above technical solution: The rotation axis passes through the inner surface of the support platform, and the rotation axis and the central axis of the inertial unit are located on the same vertical line.

[0008] As a further description of the above technical solution: The rear surface of the protective housing is recessed forward, and the protective housing encloses the high-speed motor. The transmission shaft passes through and is rotatably connected to the front surface of the protective housing.

[0009] As a further description of the above technical solution: The guide shaft has sliding keys at its rear ends on both the upper and lower sides, and the inner wall of the protective housing has sliding grooves at both the upper and lower ends. The sliding keys are slidably connected to the inner wall of the sliding grooves, and the guide shaft passes through the front surface of the protective housing.

[0010] As a further description of the above technical solution: The guide groove is spiral-shaped, and the positioning block is slidably connected to the inner wall of the guide groove.

[0011] As a further description of the above technical solution: The front surface of the extrusion part has a corrugated recess.

[0012] As a further description of the above technical solution: The protective shell and locking components are provided in two sets. The two sets of protective shells and locking components are symmetrically distributed front and back with respect to the center line of the support platform. The opposing surfaces of the two sets of extrusion components are directly opposite the front and back surfaces of the inertial unit.

[0013] This utility model has the following beneficial effects: 1. In this utility model, under the action of two sets of symmetrically distributed locking components, the high-speed motor with built-in sensor and spiral guide groove transmission structure can quickly drive the extrusion piece to lock synchronously from both ends of the inertial unit when the closed loop is out of control. This solves the problems of limited position and difficulty in timely locking due to high current loss of control in the single reset locking method, and enhances the practicality of the device.

[0014] 2. In this utility model, the corrugated recesses on the extruder can increase the contact area between it and the inertial unit, thereby improving the braking effect. Furthermore, the extruder is made of hard rubber, which has a certain deformation capacity, which can buffer and reduce inertial force, and reduce wear on the surfaces of the extruder and the inertial unit, thus extending the service life of the components.

[0015] 3. In this utility model, the extrusion component is connected to the guide shaft by a sleeve and a fastening bolt. After wear, it can be replaced simply by removing the fastening bolt, without disassembling the entire locking device, which improves the convenience of using the device. Attached Figure Description

[0016] Figure 1 This is a front view of the three-dimensional structure of the overall device in this utility model; Figure 2 This is a side view of the three-dimensional structure of the overall device in this utility model; Figure 3 This is a three-dimensional cross-sectional diagram of the protective shell and locking components in this utility model. Figure 4 This is a three-dimensional cross-sectional diagram of the transmission shaft and guide shaft in this utility model.

[0017] Legend: 1. Support platform; 2. Drive unit; 3. Rotary shaft; 4. Inertial unit; 5. Protective housing; 6. Locking assembly; 61. High-speed motor; 62. Conducting shaft; 63. Positioning block; 64. Guide shaft; 65. Guide groove; 66. Sleeve; 67. Mounting plate; 68. Extrusion piece; 69. Fastening bolt. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-2This utility model provides an embodiment of a rotation locking device for closed-loop loss of control, comprising a support platform 1 for supporting the overall device, a drive unit 2 disposed in the middle of the lower surface of the support platform 1, the drive unit 2 being existing technology in the field of rotation devices and related fields, and capable of being implemented by those skilled in the art, and therefore will not be described in detail in this case. Conventional drive units 2 include motors, etc. The output shaft of the drive unit 2 is fixedly connected to a rotating shaft 3, and the drive unit 2 can drive the rotating shaft 3 to rotate. An inertial unit 4 is disposed at the top of the rotating shaft 3, the inertial unit 4 being a support platform, the support platform being used to support the workpiece, existing technology, and capable of being implemented by those skilled in the art. The above components are operable by personnel in related fields, therefore will not be described in detail in this case. A protective shell 5 is fixedly connected to the upper surface of the support platform 1, and a locking component 6 is disposed on the upper part of the support platform 1, the locking component 6 being a rotation device loss of control protection device, which can lock when the inertial unit 4 loses control.

[0020] Reference Figures 1-2 The rotating shaft 3 passes through the inner surface of the support platform 1. The central axes of the rotating shaft 3 and the inertial unit 4 are located on the same vertical line, which can ensure the stability of the rotational force transmission.

[0021] Reference Figures 2-4 The locking component 6 includes a high-speed motor 61, which is existing technology and can be implemented by those skilled in the art. The high-speed motor 61 has a built-in sensor that automatically drives the high-speed motor 61 when the inertial unit 4 malfunctions. The rotation angle of the output shaft of the high-speed motor 61 is pre-set to ensure stable positioning. The high-speed motor 61 is located on the rear surface of the protective housing 5, which provides support for the high-speed motor 61. The output shaft of the high-speed motor 61 is fixedly connected to a transmission shaft 62. A positioning block 63 is fixedly connected to the front part of the right surface of the transmission shaft 62. A guide shaft 64 is sleeved on the outer wall of the transmission shaft 62. The central axes of the transmission shaft 62 and the guide shaft 64 are located on the same side. On the horizontal line, a guide groove 65 is provided on the inner wall of the guide shaft 64. The positioning block 63 fits into the guide groove 65. A sleeve 66 is sleeved on the front end of the outer wall of the guide shaft 64. A mounting plate 67 is fixedly connected to the front surface of the sleeve 66. An extrusion member 68 is fixedly connected to the front surface of the mounting plate 67. The extrusion member 68 is made of hard rubber, which can provide obstruction and, according to the properties of rubber, can also deform to provide cushioning. Fastening bolts 69 for fixing the sleeve 66 are inserted into both the left and right sides of the sleeve 66. A through round hole is provided on both the left and right sides of the sleeve 66. The fastening bolts 69 pass through and are threadedly connected to the left and right sides of the guide shaft 64, which can fix the sleeve 66 and the guide shaft 64 together.

[0022] Reference Figures 2-4The rear surface of the protective housing 5 is recessed forward, enclosing the high-speed motor 61 and providing protection. The rear is open, facilitating heat dissipation and subsequent disassembly and maintenance. The transmission shaft 62 passes through and is rotatably connected to the front surface of the protective housing 5. The guide shaft 64 has sliding keys at its rear ends on both the upper and lower surfaces. Sliding grooves are formed at both the upper and lower ends of the inner wall of the protective housing 5, with the sliding keys slidably connected to the inner wall of the grooves. This allows the guide shaft 64 to slide only in the back-and-forth direction. The guide shaft 64 passes through the front surface of the protective housing 5, and the guide groove 65 is formed... The positioning block 63 is spiral-shaped and slidably connected to the inner wall of the guide groove 65. When the positioning block 63 rotates with the transmission shaft 62, it will squeeze the guide groove 65 and drive the guide shaft 64 to move forward. The front surface of the extrusion member 68 has a corrugated recess, which can increase its contact area with the inertial unit 4 and ensure the braking effect. The protective shell 5 and the locking component 6 are provided in two sets. The two sets of protective shells 5 and locking components 6 are symmetrically distributed in front and behind with the center line of the support platform 1. The opposite surfaces of the two sets of extrusion members 68 face the front and rear surfaces of the inertial unit 4, and can brake the inertial unit 4 from both the front and rear ends at the same time.

[0023] Working principle: When the device is working normally, the support platform 1 provides stable support for the overall structure. After the drive unit 2 in the middle of its lower surface is started, it drives the rotating shaft 3 to rotate through the output shaft, which in turn drives the inertial unit 4 to rotate to achieve the rotation function. At this time, the high-speed motor 61 is in standby mode.

[0024] When the inertial unit 4 goes out of control, the built-in sensor of the high-speed motor 61 quickly detects the anomaly and immediately drives the output shaft of the high-speed motor 61 to rotate, which in turn drives the transmission shaft 62 to rotate synchronously. The positioning block 63 at the front of the transmission shaft 62 moves in a circular motion with the transmission shaft 62. During the rotation, the positioning block 63 will squeeze the inner wall of the guide groove 65, forcing the guide shaft 64 to slide forward along the slide groove of the protective shell 5. The front end of the guide shaft 64 drives the mounting plate 67 and the extrusion member 68 to move forward synchronously through the sleeve 66. The extrusion member 68 will fit against the surface of the inertial unit 4, using the deformation characteristics of rubber to achieve buffering, and at the same time increasing the contact area through the corrugated recess. Since there are two sets of locking components 6, symmetrically distributed on the front and rear sides of the inertial unit 4, they can form a stable lock on the inertial unit 4 from both the front and rear ends, completing the loss of control braking.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotation locking device for closed-loop runaway, comprising a support platform (1), characterized in that: A drive unit (2) is provided in the middle of the lower surface of the support platform (1). The output shaft of the drive unit (2) is fixedly connected to a rotating shaft (3). An inertial unit (4) is provided at the top of the rotating shaft (3). A protective shell (5) is fixedly connected to the upper surface of the support platform (1). A locking component (6) is provided on the upper part of the support platform (1). The locking assembly (6) includes a high-speed motor (61), which is disposed on the rear surface of the protective housing (5). The output shaft of the high-speed motor (61) is fixedly connected to a transmission shaft (62). A positioning block (63) is fixedly connected to the front part of the right surface of the transmission shaft (62). A guide shaft (64) is sleeved on the outer wall of the transmission shaft (62). A guide groove (65) is opened on the inner wall of the guide shaft (64). A sleeve (66) is sleeved on the front end of the outer wall of the guide shaft (64). A mounting plate (67) is fixedly connected to the front surface of the sleeve (66). An extruder (68) is fixedly connected to the front surface of the mounting plate (67).

2. The rotation locking device for closed-loop runaway as described in claim 1, characterized in that: The sleeve (66) has fastening bolts (69) inserted into both the left and right sides. The fastening bolts (69) are threaded through and connected to the left and right sides of the guide shaft (64).

3. The rotation locking device for closed-loop runaway as described in claim 1, characterized in that: The rotation axis (3) passes through the inner surface of the support platform (1), and the central axis of the rotation axis (3) and the inertial unit (4) are located on the same vertical line.

4. The rotation locking device for closed-loop runaway as described in claim 1, characterized in that: The rear surface of the protective housing (5) is set to be concave in front, the protective housing (5) encloses the high-speed motor (61), and the transmission shaft (62) passes through and is rotatably connected to the front surface of the protective housing (5).

5. A rotation locking device for closed-loop runaway as described in claim 1, characterized in that: The guide shaft (64) has sliding keys at the rear ends of both the upper and lower sides. The inner walls of the protective shell (5) have sliding grooves at both the upper and lower ends. The sliding keys are slidably connected to the inner walls of the sliding grooves. The guide shaft (64) penetrates the front surface of the protective shell (5).

6. The rotation locking device for closed-loop runaway as described in claim 1, characterized in that: The guide groove (65) is spiral-shaped, and the positioning block (63) is slidably connected to the inner wall of the guide groove (65).

7. The rotation locking device for closed-loop runaway as described in claim 1, characterized in that: The front surface of the extrusion part (68) has a corrugated recess.

8. A rotation locking device for closed-loop runaway as described in claim 1, characterized in that: The protective shell (5) and locking components (6) are provided in two sets. The two sets of protective shells (5) and locking components (6) are symmetrically distributed in front and back with the center line of the support platform (1). The opposing surfaces of the two sets of extrusion parts (68) face the front and back surfaces of the inertial unit (4).

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