A forward and reverse bidirectional rotation motion obstruction detection mechanism

Abstract

The present invention belongs to the technical field of motion detection, and discloses a forward and reverse bidirectional rotational motion obstruction detection mechanism, comprising a base, a screw motion mechanism, a guide slide rail mechanism, a front and rear motion obstruction detection mechanism, a rotating shaft, a swing arm and a pull rod; the present invention converts the forward and reverse rotational motion obstruction into a separation displacement of a front and rear motion mechanical structure component, triggering a separation sensor to issue an alarm, the rotating shaft is subjected to the forward rotational motion resistance to generate a separation displacement of an anti-pressure plate and a support plate, triggering the anti-pressure sensor contact separation sensing alarm, and the reverse rotational motion resistance causes the connection plate to separate from the support plate, triggering the separation sensing alarm of the separation sensor contact piece, thereby achieving the purpose of detecting the forward and reverse bidirectional motion resistance obstruction of the rotating shaft, and at the same time interrupting the continuous transmission of power by separating the anti-pressure plate from the support plate and the connection plate from the support plate, thereby protecting the mechanical structure.

Description

Technical Field

[0001] The invention belongs to the technical field of motion detection, and in particular relates to a forward and reverse bidirectional rotation motion obstruction detection mechanism. Background Art

[0002] In the power mechanism that converts linear motion into rotational motion, the rotating mechanism is connected to other mechanical structures to complete power transmission. In actual application, the mechanical structure is affected by external forces or any structural component of the mechanical structure fails, resulting in interruption of power transmission, while the power source continues to output power. Therefore, the reaction force can easily cause some damage to the entire power transmission mechanism and is not easy to repair.

[0003] Chinese patent application No. 2016107512993 (application date: 2018.05.08) "A linear pair-controlled rotational motion obstruction detection mechanism" includes a slot box, a linear pair mechanism, a swing arm, and a sensor. The linear pair mechanism is arranged at one end in the slot box cavity, and a through hole is provided on the opposite side wall at the other end of the slot box. The swing arm is connected to the slot box through a swing shaft passing through the through hole, and the length of the through hole is greater than the diameter of the swing shaft; the sensor is arranged on the outer wall of the slot box, and the sensor contact connected to the sensor is connected to the swing shaft through a slide; obviously, this obstruction detection mechanism can only perform one-way detection, which is inconvenient to use. Summary of the invention

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a forward and reverse bidirectional rotational motion obstruction detection mechanism, including a base, a screw motion mechanism, a guide slide rail mechanism, a front and rear motion obstruction detection mechanism, a rotating shaft, a swing arm and a pull rod; the screw motion mechanism includes a screw front end support seat, a screw rear end support seat, a screw, and a thread sleeve, the screw front end support seat is arranged on the front side of the screw, the screw rear end support seat is arranged on the rear side of the screw, the thread sleeve is arranged on the screw and between the screw front end support seat and the screw rear end support seat; the guide slide rail mechanism includes a slide rail and a slider, the slide rail is fixed to both sides of the base by screws, the slide rails on both sides are arranged in parallel, and the slider is installed on the slide rail for sliding back and forth.

[0005] The forward and backward movement obstruction detection mechanism includes a connecting plate, a supporting plate, an anti-pressure plate, an anti-pressure spring mechanism, and a separation spring mechanism. The supporting plate is fixed on the sliding block. The separation spring mechanism includes a long bolt, a compression spring, and a clamping nut. The long bolt is a long bolt with a gasket. The compression spring is mounted on the long bolt. The long bolt passes through the front side of the supporting plate and is fixed to the connecting plate through the clamping nut. The front side of the connecting plate is connected to the thread sleeve through a screw. The forward and backward movement of the lead screw drives the supporting plate to move forward and backward. The connecting plate is a U-shaped double-folding panel. The anti-pressure plate is installed above the supporting plate. The anti-pressure spring mechanism includes a torsion spring and an anti-pressure plate rotating shaft. The anti-pressure plate rotating shaft passes through the torsion spring, the rotating holes on both sides of the anti-pressure plate, and the holes on both sides of the side walls of the support plate.

[0006] The rotating shaft passes through the shaft holes of the rotating shaft support seats on both sides and can perform rotating motion. The rotating shaft support seats are installed on the base. The swing arm is fixed to the rotating shaft by screws and is connected by a pull rod and an anti-pressure plate.

[0007] A separation sensor is installed on the side surface of the connecting plate, and the contact piece of the separation sensor is closely attached to the front side of the supporting plate. An anti-pressure sensor is arranged on the anti-pressure plate, and the contact point of the anti-pressure sensor contacts the upper surface of the supporting plate.

[0008] The bottom end of the anti-pressure plate is connected to the pull rod through the pull rod rotating shaft and can rotate freely; the proximal end of the swing arm is fixedly connected to the rotating shaft, and the distal end of the swing arm is connected to the pull rod through the swing arm rotating shaft and can rotate freely.

[0009] When the present invention is working, the torsion force from the power source of the lead screw causes rotational motion, driving the thread sleeve to move forward and backward. The thread sleeve is fixedly connected to the connecting plate, driving the connecting plate to move forward and backward. The connecting plate and the support plate are tightly attached to each other by a separation spring mechanism, thereby driving the support plate to move forward and backward on the slide rails on both sides. The anti-pressure plate and the support plate are tightly attached to each other by a torsion spring mechanism, driving the anti-pressure plate to move forward and backward with the support plate. The anti-pressure plate is connected to the swing arm through a pull rod, and the forward and backward movement of the anti-pressure plate drives the swing arm to swing forward and backward. The swing arm is fixed to the rotating shaft by screws, thereby driving the rotating shaft to perform forward and reverse rotational motion around the through hole of the rotating shaft support seat.

[0010] The rotating shaft is connected to other transmission mechanisms to transmit the power of the swing arm to other power mechanisms. When other power mechanisms receive external force or fail, the external force or failure force is transmitted back to the rotating shaft through the mechanical structure, and the rotating shaft stops rotating, so that the swing arm cannot continue to swing forward or reverse. At this time, the power source continues to run. When the torque of the power source drives the movement of the wire sleeve in the backward direction, the swing arm receives resistance and does not move. The pull rod and anti-pressure plate connected to the swing arm are also stationary, and the lead screw continues to rotate, and the wire sleeve drives the connecting plate to push the support plate to continue to retreat. At this time, the belt The dynamic anti-pressure plate rotates around the anti-pressure plate rotation axis, and the anti-pressure plate is separated from the upper surface of the support plate, triggering the anti-pressure sensor contacts fixed on the anti-pressure plate to sense the separation, thereby completing the detection of motion obstruction in the forward direction; when the torque of the power source drives the wire sleeve to move in the forward direction, when the swing arm encounters resistance and does not move, the pull rod, anti-pressure plate and support plate connected to the swing arm are also stationary, while the lead screw continues to rotate, and the wire sleeve drives the connecting plate to continue to move forward, driving the connecting plate to separate from the front side of the support plate, triggering the separation sensor contacts fixed on the side of the connecting plate to sense the separation, thereby completing the detection of motion obstruction in the backward direction.

[0011] Beneficial effect: The present invention converts the obstruction of forward and reverse rotational motion into separation displacement of mechanical structural components in forward and backward motion, triggering the separation sensor to sound an alarm, and the rotating shaft is subjected to the resistance of forward rotational motion, resulting in the separation displacement of the anti-pressure plate and the support plate, triggering the anti-pressure sensor contact separation perception alarm, and the resistance of reverse rotational motion causes the connecting plate to separate from the support plate, triggering the separation perception alarm of the separation sensor contact piece, thereby achieving the purpose of detecting the obstruction of the forward and reverse bidirectional motion resistance of the rotating shaft, and at the same time, the continuous transmission of power is interrupted by the separation of the anti-pressure plate from the support plate and the separation of the connecting plate from the support plate, thereby protecting the mechanical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the upper front structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the upper and rear structures of the present invention;

[0014] Figure 3 It is a schematic diagram of the bottom structure of the present invention;

[0015] Figure 4 It is a schematic diagram of the installation position structure of the anti-compression spring mechanism of the present invention;

[0016] like Figure 1-4 As shown: the front end support seat 1 of the screw, the rear end support seat 2 of the screw, the screw 3, the thread sleeve 4, the connecting plate 5, the anti-pressure plate 6, the support plate 7, the torsion spring 8, the swing arm 9, the rotating shaft support seat 10, the rotating shaft 11, the anti-pressure plate rotating shaft 12, the slider 13, the slide rail 14, the anti-pressure sensor 15, the separation sensor 16, the clamping nut 17, the front side surface of the support plate 18, the upper surface of the support plate 19, the side wall of the support plate 20, the compression spring 21, the pull rod 22, the swing arm rotating shaft 23, the long bolt 24, and the pull rod rotating shaft 25. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] A forward and reverse bidirectional rotational motion obstruction detection mechanism, comprising a base, a screw 3 motion mechanism, a guide slide rail mechanism, a forward and backward motion obstruction detection mechanism, a rotating shaft 11, a swing arm 9 and a pull rod 22; the screw motion mechanism comprises a screw front end support seat 1, a screw rear end support seat 2, a screw 3, and a thread sleeve 4, the screw front end support seat 1 is arranged on the front side of the screw 3, the screw rear end support seat 2 is arranged on the rear side of the screw 3, the thread sleeve 4 is sleeved on the screw 3 and arranged between the screw front end support seat 1 and the screw rear end support seat 2; the guide slide rail mechanism comprises a slide rail 14 and a slider 13, the slide rail 14 is fixed to both sides of the base by screws, the slide rails on both sides are arranged in parallel, and the slider 13 is installed on the slide rail 14 to slide back and forth.

[0019] The forward and backward movement obstruction detection mechanism includes a connecting plate 5, a support plate 7, an anti-pressure plate 6, an anti-pressure spring mechanism, and a separation spring mechanism. The support plate 7 is fixed on the slider 13. The separation spring mechanism includes a long bolt 24, a compression spring 21, and a clamping nut 17. The long bolt 24 is a long bolt with a gasket. The compression spring 21 is sleeved on the long bolt 24. The long bolt 24 passes through the front side of the support plate 7 and is fixed to the connecting plate 5 through the clamping nut 17. The front side of the connecting plate 5 is connected to the wire sleeve 4 by screws. The forward and backward movement of the lead screw 3 drives the support plate 7 to move forward and backward. The connecting plate 5 is a U-shaped double-folding panel. The anti-pressure plate 6 is installed above the support plate 7. The anti-pressure spring mechanism includes a torsion spring 8 and an anti-pressure plate rotating shaft 12. The anti-pressure plate rotating shaft 12 passes through the torsion spring 8, the rotating holes on both sides of the anti-pressure plate 6 and the holes on both sides of the side wall 20 of the support plate.

[0020] The rotating shaft 11 passes through the shaft holes of the rotating shaft support seats 10 on both sides and can rotate. The rotating shaft support seats 10 are installed on the base. The swing arm 9 is fixed to the rotating shaft 11 by screws and is connected to the anti-pressure plate 6 by the pull rod 22.

[0021] A separation sensor 16 is installed on the side surface of the connecting plate 5, and the contact piece of the separation sensor 16 is in close contact with the front side surface 18 of the supporting plate. An anti-pressure sensor 15 is arranged on the anti-pressure plate 6, and the contact point of the anti-pressure sensor 15 contacts the upper surface 19 of the supporting plate.

[0022] The bottom end of the anti-pressure plate 6 is connected to the pull rod 22 through the pull rod rotating shaft 25 and can rotate freely; the proximal end of the swing arm 9 is fixedly connected to the rotating shaft 11, and the distal end of the swing arm 9 is connected to the pull rod 22 through the swing arm rotating shaft 23 and can rotate freely.

[0023] When the present invention is working, the torsion of the screw 3 from the power source causes rotational motion, driving the thread sleeve 4 to move forward and backward. The thread sleeve 4 is fixedly connected to the connecting plate 5, driving the connecting plate 5 to move forward and backward. The connecting plate 5 and the support plate 7 are tightly attached by the separation spring mechanism, thereby driving the support plate 7 to move forward and backward on the slide rails on both sides. The anti-pressure plate 6 and the support plate 7 are tightly attached by the torsion spring 8 mechanism, driving the anti-pressure plate 6 to move forward and backward with the support plate 7. The anti-pressure plate 6 is connected to the swing arm 9 through the pull rod 22. The forward and backward movement of the anti-pressure plate 6 drives the swing arm 9 to swing forward and backward. The swing arm 9 is fixed to the rotating shaft 11 by screws, thereby driving the rotating shaft 11 to perform forward and reverse rotational motion with the through hole of the rotating shaft support seat 10 as the center.

[0024] The rotating shaft 11 is connected to other transmission mechanisms to transmit the power of the swing arm 9 to other power mechanisms. When other power mechanisms receive external forces or fail, the external forces or failure forces are reversely transmitted to the rotating shaft 11 through the mechanical structure, and the rotating shaft 11 stops rotating, so that the swing arm 9 cannot continue to swing forward or reverse. At this time, the power source continues to run. When the torque of the power source drives the movement of the wire sleeve 4 in the backward direction, the swing arm 9 receives resistance and does not move. The pull rod 22 and the anti-pressure plate 6 connected to the swing arm 9 are also stationary, and the lead screw 3 continues to rotate, and the wire sleeve 4 drives the connecting plate 5 to push the support plate 7 to continue to retreat, and at this time drives the anti-pressure plate The plate 6 rotates around the anti-pressure plate rotating shaft 12, and the anti-pressure plate 6 is separated from the upper surface 19 of the support plate, triggering the anti-pressure sensor 15 contact fixed on the anti-pressure plate 6 to sense the separation, thereby completing the detection of obstructed movement in the forward direction; when the torque of the power source drives the silk sleeve 4 to move in the forward direction, when the swing arm 9 receives resistance and does not move, the pull rod 22, the anti-pressure plate 6 and the support plate 7 connected to the swing arm 9 are also stationary, and the lead screw 3 continues to rotate, and the silk sleeve 4 drives the connecting plate 5 to continue to move forward, driving the connecting plate 5 to separate from the front side surface 18 of the support plate, triggering the separation sensor 16 contact fixed on the side of the connecting plate 5 to sense the separation, thereby completing the detection of obstructed movement in the backward direction.

[0025] When an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element, and when an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0026] The directional terms such as left, right, up, down, etc. in this embodiment are merely relative concepts or are based on the normal use state of the product and should not be considered as restrictive.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A forward and reverse bidirectional rotational motion obstruction detection mechanism, characterized in that: It includes a base, a screw movement mechanism, a guide rail mechanism, a forward and backward movement obstruction detection mechanism, a rotating shaft, a swing arm and a pull rod. The screw movement mechanism includes a screw front end support seat, a screw rear end support seat, a screw and a thread sleeve. The screw front end support seat is arranged at the front side of the screw, the screw rear end support seat is arranged at the rear side of the screw, and the thread sleeve is sleeved on the screw and arranged between the screw front end support seat and the screw rear end support seat. The forward and backward motion obstruction detection mechanism includes a connecting plate, a supporting plate, an anti-pressure plate, an anti-pressure spring mechanism, and a separation spring mechanism. The supporting plate is fixed on the slider. The separation spring mechanism includes a long bolt, a compression spring, and a clamping nut. The long bolt passes through the front side of the supporting plate and is fixed to the connecting plate through the clamping nut. The front side of the connecting plate is connected to the thread sleeve through a screw. The forward and backward movement of the lead screw drives the supporting plate to move forward and backward. The anti-pressure plate is installed above the supporting plate. The anti-pressure spring mechanism includes a torsion spring and an anti-pressure plate rotating shaft, and the anti-pressure plate rotating shaft passes through the torsion spring, the rotating holes on both sides of the anti-pressure plate, and the holes on both sides of the side wall of the support plate; The rotating shaft passes through the shaft holes of the rotating shaft support seats on both sides and can rotate. The rotating shaft support seats are installed on the base. The swing arm is fixed on the rotating shaft and connected with the anti-pressure plate through a pull rod; A separation sensor is installed on the side surface of the connecting plate, and the contact piece of the separation sensor is in close contact with the front side surface of the supporting plate. An anti-pressure sensor is arranged on the anti-pressure plate, and the contact point of the anti-pressure sensor contacts the upper surface of the supporting plate. The bottom end of the anti-pressure plate is connected to the pull rod through the pull rod rotating shaft and can rotate freely; the proximal end of the swing arm is fixedly connected to the rotating shaft, and the distal end of the swing arm is connected to the pull rod through the swing arm rotating shaft and can rotate freely.

2. The forward and reverse bidirectional rotational motion obstruction detection mechanism according to claim 1, characterized in that: The guide rail mechanism comprises a rail and a slider. The rails are fixed to two sides of the base by screws. The rails on both sides are arranged in parallel. The slider is mounted on the rails in a coordinated manner.

3. The forward and reverse bidirectional rotational motion obstruction detection mechanism according to claim 1, characterized in that: The compression spring is sleeved on the long bolt, and the long bolt is a long bolt with a gasket.

4. The forward and reverse bidirectional rotational motion obstruction detection mechanism according to claim 1, characterized in that: The connecting plate is a U-shaped double-folded panel.

5. The forward and reverse bidirectional rotational motion obstruction detection mechanism according to claim 1, characterized in that: The working process of the forward and reverse bidirectional rotation obstruction detection mechanism is as follows: the torsion force from the power source of the lead screw rotates, driving the thread sleeve to move forward and backward, the thread sleeve is fixedly connected to the connecting plate, driving the connecting plate to move forward and backward, the connecting plate and the support plate are tightly attached by a separation spring mechanism, thereby driving the support plate to move forward and backward on the slide rails on both sides, the anti-pressure plate and the support plate are tightly attached by a torsion spring mechanism, driving the anti-pressure plate to move forward and backward with the support plate, the anti-pressure plate is connected to the swing arm through a pull rod, the forward and backward movement of the anti-pressure plate drives the swing arm to swing forward and backward, the swing arm is fixed to the rotating shaft by screws, thereby driving the rotating shaft to perform forward and reverse rotational movement with the through hole of the rotating shaft support seat as the center; The rotating shaft is connected to other transmission mechanisms to transmit the power of the swing arm to other power mechanisms. When other power mechanisms receive external force or fail, the external force or failure force is transmitted back to the rotating shaft through the mechanical structure, and the rotating shaft stops rotating, so that the swing arm cannot continue to swing forward or reverse. At this time, the power source continues to run. When the torque of the power source drives the movement of the wire sleeve in the backward direction, the swing arm receives resistance and does not move. The pull rod and anti-pressure plate connected to the swing arm are also stationary, and the lead screw continues to rotate, and the wire sleeve drives the connecting plate to push the support plate to continue to retreat. At this time, the belt The dynamic anti-pressure plate rotates around the anti-pressure plate rotation axis as the center, and the anti-pressure plate is separated from the upper surface of the support plate, triggering the anti-pressure sensor contacts fixed on the anti-pressure plate to sense the separation, thereby completing the detection of obstructed movement in the forward direction; when the torque of the power source drives the wire sleeve to move in the forward direction, when the swing arm receives resistance and does not move, the pull rod, anti-pressure plate and support plate connected to the swing arm are also stationary, while the lead screw continues to rotate, and the wire sleeve drives the connecting plate to continue to move forward, driving the connecting plate to separate from the front side of the support plate, triggering the separation sensor contacts fixed on the side of the connecting plate to sense the separation, thereby completing the detection of obstructed movement in the backward direction.

Images