Rail guide pin device capable of removing obstacles

Abstract

The invention provides a rail guide pin device capable of clearing obstacles, relates to the technical field of AGVs, and solves the problems that large and heavy obstacles cannot be cleared, and a guide pin is broken and stuck due to the obstacles The device comprises a guide pin assembly, an obstacle clearing pin assembly and a switch assembly, the guide pin assembly is arranged on one side of the obstacle clearing pin assembly, and the switch assembly is arranged on the other side of the obstacle clearing pin assembly. The switch assembly is arranged on the inner side of the obstacle clearing pin assembly. The obstacle clearing device is provided with a two-section one-way passing structure, when an obstacle is stuck in a rail and cannot be automatically cleared, the obstacle clearing pin can cross the obstacle in the forward direction, and the situation that the obstacle clearing pin is broken is avoided; when the AGV needs to reverse to clean the stuck obstacle, the obstacle clearing pin can also swing reversely to cross the obstacle, and the situation that the obstacle clearing pin is stuck by the obstacle and cannot move during reversing is avoided; when an obstacle is stuck in the track and cannot be automatically cleaned, the obstacle cleaning pin swings to cross the stuck obstacle, and the inductive switch is triggered, so that automatic parking of the AGV or other conveying equipment can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of AGVs, and in particular to a guide pin device capable of clearing obstacles on a track. Background Art

[0002] The track guide pin device is a mechanical connector, usually installed at the bottom or side of various production line transport equipment, and matched with the guide groove or guide hole on the preset track or path. Its main function is to guide various production line transport equipment to travel in the correct direction and prevent them from deviating from the track or path, thereby ensuring stability and accuracy. Since the guide groove is installed on the production line, obstacles such as bolts and nuts will inevitably fall into the guide groove, so it is necessary to install a clearing device in front of the guide pin to clear these obstacles.

[0003] AGVs or other production line transportation equipment that use track guidance have the problem of being unable to clear obstacles inside the track guide groove. These obstacles will interfere with the coordination between the guide pin and the guide groove, causing the AGV to deviate from the track or fail to operate normally. Since the track guide groove is usually designed to be relatively narrow and located at the bottom or side of the equipment, it is difficult to observe and clean directly. The prior art often uses an obstacle-clearing brush to clear obstacles on the running route, or directly uses the track guide pin to push the obstacle forward. However, if there are larger and heavier obstacles inside the guide groove (such as nuts and bolts that fall into the track guide groove), the obstacle may be stuck in the track guide groove. At this time, the obstacle-clearing brush cannot clear the stuck obstacle. If the AGV continues to move forward, the guide pin contacts the stuck obstacle, and the guide pin will break. For this reason, it is necessary to design an obstacle-clearing device that has both obstacle-clearing capabilities and can stop in time when encountering a stuck obstacle. Summary of the invention

[0004] To this end, the present invention provides a track guide pin device capable of clearing obstacles, which is used to solve the problems that larger and heavier obstacles cannot be cleared and the obstacles cause the guide pins to break and get stuck.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a guide pin device for clearing tracks, comprising: a guide pin assembly, a clearing pin assembly and a switch assembly, wherein the guide pin assembly is arranged on one side of the clearing pin assembly, the clearing pin assembly and the guide pin assembly are bolted together, the switch assembly and the clearing pin assembly are bolted together, the switch assembly is located inside the clearing pin assembly, and the switch assembly and the clearing pin assembly can realize component linkage; wherein,

[0006] The guide pin assembly comprises a guide pin seat, a clearing pin mounting plate, a guide pin and an installation and removal device, wherein the guide pin seat and the clearing pin mounting plate are nested in the outer ring of the guide pin, and the installation and removal device is bolted to the guide pin seat;

[0007] The obstacle clearing pin assembly comprises a mounting bracket, an obstacle clearing pin, a rotating shaft, a rotating arm, a tension spring, a pin shaft and a torsion spring, the inner side of the mounting bracket is hollowed out, the rotating arm is arranged on the outer side of the rotating shaft, the rotating shaft is arranged at one end of the mounting bracket, and the rotating shaft and the mounting bracket are rotatably connected, the tension spring connects the mounting bracket and the rotating arm, the pin shaft connects the obstacle clearing pin and the rotating arm, and the torsion spring is arranged at the pin shaft;

[0008] The switch assembly comprises a switch bracket and a detection switch, and the detection switch is arranged at the outer bottom of the switch bracket.

[0009] Preferably, two sleeves are provided at the upper and lower ends of the guide pin seat and the clearing pin mounting plate, an elastic retaining ring is provided on the inner side of the sleeve, and a deep groove ball bearing is provided on the outer side of the sleeve, and the guide pin seat, the clearing pin mounting plate, the sleeve and the deep groove ball bearing are installed on the guide pin to form a shaft system.

[0010] Preferably, the installation and disassembly device is provided with a mounting plate, the mounting plate is arranged in an L shape, an adjustment handle is arranged at the top of the short side of the mounting plate, a locking nut and an adjusting screw are also arranged at the top of the short side of the mounting plate, and the adjusting screw and the locking nut are threadedly connected.

[0011] Preferably, a spring mounting frame is arranged on the top of the mounting bracket, a plurality of threaded holes are arranged on the side of the mounting bracket, and both side edges of the spring mounting frame and the threaded holes are connected by bolts.

[0012] Preferably, spring pressure covers are provided at both ends of the tension spring, and the spring pressure covers are used to be fixedly connected to the rotating arm and the spring mounting frame.

[0013] Preferably, an oil-free bushing is provided between the rotating shaft and the mounting bracket.

[0014] Preferably, the pin is configured as a B-type pin.

[0015] Preferably, a cotter pin is also provided at the pin shaft, and the cotter pin is a cotter pin with a chamfered end.

[0016] Preferably, an obstacle clearing pin extension section is also provided at the bottom of the obstacle clearing pin.

[0017] Preferably, a thin nut is provided on the outer ring of the detection switch, and a set screw is provided on the top of the switch bracket.

[0018] This application adopts the above technical solution, which has at least the following beneficial effects:

[0019] Since the obstacle-clearing track guide pin device has a double-section one-way passing structure, when an obstacle is stuck in the track and cannot be automatically cleared, the obstacle-clearing pin can pass over the obstacle in the forward direction, avoiding the situation where the obstacle-clearing pin breaks; when the AGV needs to reverse to clear the stuck obstacle, the obstacle-clearing pin can also swing in the reverse direction to pass over the obstacle, and the obstacle-clearing pin will not be stuck by the obstacle and cannot move when reversing;

[0020] Thanks to the combined use of the clearing pin assembly and the switch assembly, when an obstacle is stuck in the track and cannot be automatically cleared, the clearing pin can swing over the stuck obstacle and trigger the induction switch at the same time, so that the AGV or other conveying equipment can stop automatically;

[0021] The obstacle-clearing track guide pin device can simultaneously meet the needs of automatically clearing obstacles in the track, automatically stopping the car when it is stuck and cannot clear obstacles, and reversing to reveal obstacles.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure provided by an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of a guide pin assembly provided by an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of a clearing pin assembly provided by an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of the structure of a switch assembly provided by an embodiment of the present invention;

[0028] In the figure: 1. guide pin assembly; 2. clearing pin assembly; 3. switch assembly; 11. guide pin seat; 12. clearing pin mounting plate; 13. guide pin; 14. installation and removal equipment; 15. sleeve; 16. deep groove ball bearing; 21. mounting bracket; 22. clearing pin; 23. rotating shaft; 24. rotating arm; 25. tension spring; 26. pin shaft; 27. torsion spring; 28. oil-free bushing; 29. ​​cotter pin; 31. switch bracket; 32. detection switch; 141. mounting plate; 142. adjustment handle; 143. adjustment screw; 144. locking nut; 151. elastic retaining ring; 211. spring mounting bracket; 212. threaded hole; 221. clearing pin extension section; 251. spring pressure cover; 311. set screw; 321. thin nut. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0030] The specific embodiment of the present invention provides a guide pin device for a track that can clear obstacles, Figure 1 As shown, it mainly includes a guide pin assembly 1, a clearing pin assembly 2 and a switch assembly 3. The guide pin assembly 1 supports and positions the guide pin 13 through a guide pin seat 11, and serves as the main body of the device of this embodiment, and is a track guide for AGV or other conveying equipment; the clearing pin assembly 2 is fixed to the guide pin assembly 1 by bolts, and is used to push obstacles in the track; the switch assembly 3 and the clearing pin assembly 2 are used in pairs, and are fixed to the clearing pin assembly 2 by bolts, and are used to trigger a brake signal when the clearing pin assembly 2 cannot push the obstacle.

[0031] Specifically, the guide pin assembly 1 includes a guide pin seat 11, a clearing pin mounting plate 12, a guide pin 13 and an installation and removal device 14. The guide pin seat 11 and the clearing pin mounting plate 12 are nested in the outer ring of the guide pin 13, and the installation and removal device 14 is bolted to the guide pin seat 11;

[0032] The obstacle clearing pin assembly 2 includes a mounting bracket 21, an obstacle clearing pin 22, a rotating shaft 23, a rotating arm 24, a tension spring 25, a pin shaft 26 and a torsion spring 27. The inner side of the mounting bracket 21 is hollowed out, the rotating arm 24 is arranged on the outer side of the rotating shaft 23, the rotating shaft 23 is arranged at one end of the mounting bracket 21, and the rotating shaft 23 and the mounting bracket 21 are rotatably connected. The tension spring 25 connects the mounting bracket 21 and the rotating arm 24, the pin shaft 26 connects the obstacle clearing pin 22 and the rotating arm 24, and the torsion spring 27 is arranged at the pin shaft 26;

[0033] The switch assembly 3 includes a switch bracket 31 and a detection switch 32 . The detection switch 32 is arranged at the outer bottom of the switch bracket 31 .

[0034] Specifically, Figure 2 As shown, the guide pin seat 11 and the obstacle clearing pin mounting plate 12 are both provided with a sleeve 15, and the sleeve is used to nest the guide pin seat 11 and the obstacle clearing pin mounting plate 12 in the outer ring of the guide pin 13; deep groove ball bearings 16 are provided on the upper and lower sides of the guide pin seat 11 and the obstacle clearing pin mounting plate 12. The deep groove ball bearing 16 has low friction resistance and high rotation speed, and can be used on the guide pin 13 to bear radial load or combined load of radial and axial forces acting simultaneously; the guide pin seat 11, the obstacle clearing pin mounting plate 12, the sleeve 15 and the deep groove ball bearing 16 are installed on the guide pin 13 to form a shaft system, which is fixed by an elastic retaining ring 151, wherein the elastic retaining ring 151 adopts an A-type shaft elastic retaining ring.

[0035] The installation and disassembly equipment 14 includes a mounting plate 141 and an adjusting handle 142. The mounting plate 141 is configured as an L-shaped mounting plate. An adjusting handle 142 is provided on the top of the short side of the mounting plate 141. A locking nut 144 and an adjusting screw 143 are also provided on the top of the short side of the mounting plate 141. The adjusting screw 143 and the locking nut 144 are threadedly connected. The guide pin seat 11 is installed on the mounting plate 141 by means of a set screw. The mounting plate 141 is bolted to the AGV or rigidly connected to the frame of other conveying equipment. The height of the mounting plate 141 is adjusted by means of the adjusting screw 143 and the locking nut 144. The adjusting handle 142 is used to manually lift the device of this embodiment for installation or maintenance.

[0036] Specifically, Figure 3 As shown, the mounting bracket 21 of the obstacle clearing pin assembly 2 is rigidly connected to the obstacle clearing pin mounting plate 12 of the guide pin assembly 1 through a set screw, the oil-free bushing 28 is installed on the rotating shaft 23 through an overfit, and the rotating arm 24 is connected to the mounting bracket 21 through the rotating shaft 23 and the elastic retaining ring 151, wherein the elastic retaining ring 151 adopts an A-type shaft elastic retaining ring; the limit stopper on the mounting bracket 21 allows the rotating arm 24 to rotate around the rotating shaft 23 relative to the inner side of the embodiment device from a vertical state; a plurality of threaded holes 212 are provided on the side of the mounting bracket for connecting and installing the spring mounting bracket 211, and the tension spring 25 is passed through The spring mounting frame 211 and the spring pressure cover 251 are respectively connected to the swivel arm 24 and the mounting bracket 21, so as to be used for the automatic return of the swivel arm 24; the swivel arm 24 and the obstacle clearing pin 22 are connected through the pin shaft 26 and the cotter pin 29, wherein the pin shaft 26 adopts the B-type pin shaft, and the cotter pin 29 is the cotter pin with the end chamfer; the limit block on the obstacle clearing pin 22 can make the obstacle clearing pin 22 rotate around the pin shaft 26 relative to the outside of the device of this embodiment only from a vertical state; the torsion spring 27 is used for the automatic return of the obstacle clearing pin 22; the obstacle clearing pin extension section 221 is connected to the bottom of the obstacle clearing pin 22 through a set screw, and the overall length of the obstacle clearing pin 22 can be adjusted.

[0037] When there is an obstacle at the front end of the obstacle clearing pin 22 and the obstacle clearing pin extension 221, the obstacle with light weight or not stuck in the guide groove will be pushed away by the obstacle clearing pin 22 and the obstacle clearing pin extension 221 due to the pulling of the tension spring 25; if the obstacle is too heavy or stuck in the guide groove, the rotating arm 24, the obstacle clearing pin 22 and the obstacle clearing pin extension 221 will rotate around the rotating shaft 23 to pass over the obstacle; when the AGV stops, the worker needs to reverse the AGV to clear the obstacle, at this time, the obstacle clearing pin 22 and the obstacle clearing pin extension 221 will rotate around the pin shaft 26, so that the obstacle clearing pin 22 and the obstacle clearing pin extension 221 pass over the obstacle.

[0038] Specifically, the switch assembly 3 is rigidly connected to the obstacle clearing pin assembly 2 by bolts. When an obstacle causes the rotating arm 24, the obstacle clearing pin 22 and the obstacle clearing pin extension section 221 to rotate around the rotating shaft 23, a sensing plate is provided on the side of the obstacle clearing pin 22. The sensing plate will swing to the top of the detection switch 32, triggering the detection switch 32. After the AGV control system receives the switch signal, it will immediately start braking, thereby ensuring that the AGV is stopped before the obstacle contacts the guide pin 13.

[0039] The advantages of this embodiment are:

[0040] Since the obstacle-clearing track guide pin device has a double-section one-way passing structure, when an obstacle is stuck in the track and cannot be automatically cleared, the obstacle-clearing pin can pass over the obstacle in the forward direction, avoiding the situation where the obstacle-clearing pin breaks; when the AGV needs to reverse to clear the stuck obstacle, the obstacle-clearing pin can also swing in the reverse direction to pass over the obstacle, and the obstacle-clearing pin will not be stuck by the obstacle and cannot move when reversing;

[0041] Thanks to the combined use of the clearing pin assembly and the switch assembly, when an obstacle is stuck in the track and cannot be automatically cleared, the clearing pin can swing over the stuck obstacle and trigger the induction switch at the same time, so that the AGV or other conveying equipment can stop automatically;

[0042] The obstacle-clearing track guide pin device can simultaneously meet the needs of automatically clearing obstacles in the track, automatically stopping the car when it is stuck and cannot clear obstacles, and reversing to reveal obstacles.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A guide pin device for an obstacle-clearing track, characterized in that: include: A guide pin assembly (1), a clearing pin assembly (2) and a switch assembly (3), wherein the guide pin assembly (1) is arranged on one side of the clearing pin assembly (2), the clearing pin assembly (2) and the guide pin assembly (1) are bolted together, the switch assembly (3) and the clearing pin assembly (2) are bolted together, the switch assembly (3) is located on the inner side of the clearing pin assembly (2), and the switch assembly (3) and the clearing pin assembly (2) can realize component linkage; wherein, The guide pin assembly (1) comprises a guide pin seat (11), a clearing pin mounting plate (12), a guide pin (13) and an installation and removal device (14); the guide pin seat (11) and the clearing pin mounting plate (12) are nested in the outer ring of the guide pin (13); and the installation and removal device (14) is bolted to the guide pin seat (11); The obstacle clearing pin assembly (2) comprises a mounting bracket (21), an obstacle clearing pin (22), a rotating shaft (23), a rotating arm (24), a tension spring (25), a pin shaft (26) and a torsion spring (27); the inner side of the mounting bracket (21) is hollowed out; the rotating arm (24) is arranged on the outer side of the rotating shaft (23); the rotating shaft (23) is arranged at one end of the mounting bracket (21); the rotating shaft (23) and the mounting bracket (21) are rotatably connected; the tension spring (25) connects the mounting bracket (21) and the rotating arm (24); the pin shaft (26) connects the obstacle clearing pin (22) and the rotating arm (24); and the torsion spring (27) is arranged at the pin shaft (26); The switch assembly (3) comprises a switch bracket (31) and a detection switch (32), wherein the detection switch (32) is arranged at the outer bottom of the switch bracket (31).

2. The obstacle-clearing track guide pin device according to claim 1, characterized in that: The guide pin seat (11) and the obstacle clearing pin mounting plate (12) are provided with two sleeves (15) at the upper and lower ends, an elastic retaining ring (151) is provided on the inner side of the sleeve (15), and a deep groove ball bearing (16) is provided on the outer side of the sleeve (15); the guide pin seat (11), the obstacle clearing pin mounting plate (12), the sleeve (15) and the deep groove ball bearing (16) are installed on the guide pin (13) to form a shaft system.

3. The obstacle-clearing track guide pin device according to claim 1, characterized in that: The installation and disassembly device (14) is provided with a mounting plate (141), the mounting plate (141) is arranged in an L shape, an adjustment handle (142) is arranged at the top of the short side of the mounting plate (141), a locking nut (144) and an adjustment screw (143) are also arranged at the top of the short side of the mounting plate (141), and the adjustment screw (143) and the locking nut (144) are threadedly connected.

4. The obstacle-clearing track guide pin device according to claim 1, characterized in that: A spring mounting frame (211) is arranged on the top of the mounting bracket (21), a plurality of threaded holes (212) are arranged on the side of the mounting bracket (21), and both side edges of the spring mounting frame (211) and the threaded holes (212) are connected by bolts.

5. The obstacle-clearing track guide pin device according to claim 4, characterized in that: Spring pressure covers (251) are provided at both ends of the tension spring (25), and the spring pressure covers (251) are used to be fixedly connected to the rotating arm (24) and the spring mounting frame (211).

6. An obstacle-clearing track guide pin device according to claim 5, characterized in that: An oil-free bushing (28) is provided between the rotating shaft (23) and the mounting bracket (21).

7. The obstacle-clearing track guide pin device according to claim 6, characterized in that: The pin shaft (26) is configured as a B-type pin shaft.

8. The obstacle-clearing track guide pin device according to claim 7, characterized in that: The pin shaft (26) is also provided with a cotter pin (29), and the cotter pin (29) is a cotter pin with a chamfered end.

9. The obstacle-clearing track guide pin device according to claim 8, characterized in that: The bottom of the obstacle clearing pin (22) is also provided with an obstacle clearing pin extension section (221).

10. The obstacle-clearing track guide pin device according to claim 1, characterized in that: The outer ring of the detection switch (32) is provided with a thin nut (321), and the top of the switch bracket (31) is provided with a set screw (311).

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