Bolt locking device

Abstract

A bolt locking device comprises a bolt mechanism, a stop pin mechanism, a mounting seat, a linkage rod and a detection sensor, the bolt mechanism is fixed below the mounting seat, the stop pin mechanism is fixed on a boss on one side of the mounting seat, the linkage rod is fixed on the other side of the mounting seat, the linkage rod is connected with the bolt mechanism, and the detection sensor is connected with the bolt mechanism. The detection sensor is arranged on one side of the plug pin mechanism and the stop pin mechanism and used for detecting the movement positions of the plug pin mechanism and the stop pin mechanism. Through the arrangement of the bolt mechanism, the stop pin mechanism, the linkage rod and the detection sensor, even if the sensor does not detect and feed back position signals of the bolt and the stop pin, the bolt and the stop pin can move to the limiting position through the dead point position of the connecting rod mechanism and then stop pushing or retracting movement, the bolt can be effectively prevented from being disengaged after being locked, the locking effect is better, and safety is higher; and the universality is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of locking devices, in particular to a latch locking device. Background Art

[0002] When lifting heavy objects, they need to be locked and fixed to facilitate lifting. Latch is often used to lock the heavy objects. Existing latch or locking mechanism only uses limit switch to limit the movement position of the mechanism, which is prone to misoperation and low safety.

[0003] For example, the patent document with publication number CN204265286U discloses an improved mobile suspension device, including a top crossbeam, one end of the top crossbeam is fixedly installed with an I-beam rail, a moving seat is hung on the I-beam rail, rollers are respectively installed on both sides of the upper end of the moving seat, and the rollers on both sides are respectively hung on both sides of the I-beam rail, a driving motor is installed on one side of the moving seat, a fixed gear is set on the output shaft of the driving motor, a rack meshing with the gear is installed at the lower end of the I-beam rail, a material suspension device is installed at the lower end of the moving seat, the suspension device includes a drum device installed on the main shaft, a reducer is installed at one end of the main shaft, the reducer is connected to the suspension motor, a steel wire rope is provided on the drum device, and hooks are respectively hung at both ends of the steel wire rope, limit baffles are respectively provided at both ends of the I-beam rail, and a limit switch is correspondingly provided on the moving seat, and the limit switch is at the same height as the limit baffle.

[0004] For example, patent publication number CN116952594A discloses a horizontal plug-in positioning and locking method. This method utilizes a gantry, pre-installed frame, drag cylinder, cylinder actuator, wedges, push-pull rod slots, horizontal pins, and a guide wedge. It includes two sets of cylinder actuators, each containing a cylinder and two travel limit switches, making pin insertion and extraction more efficient and stable.

[0005] The above-mentioned existing technology still uses limit switches to limit the movement position of the mechanism, which is prone to misoperation, unreliable structural locking effect, and low safety. It is also not very versatile. In actual use, the use of simple latch mechanisms is unreliable due to the influence of operating conditions. Therefore, it is particularly important to design a latch mechanism that can achieve rapid locking and unlocking of the latch, prevent the latch mechanism from loosening after locking, ensure reliable locking, and can withstand sufficient loads and is safe and reliable. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a latch locking device.

[0007] The utility model is implemented as follows: a latch locking device includes a latch mechanism, a stop pin mechanism, a mounting seat, a linkage rod and a detection sensor, wherein the latch mechanism is fixed below the mounting seat, the stop pin mechanism is fixed on a boss on one side of the mounting seat, the linkage rod is fixed on the other side of the mounting seat, the linkage rod is connected to the latch mechanism, and the detection sensor is arranged on one side of the latch mechanism and the stop pin mechanism for detecting the movement position of the latch mechanism and the stop pin mechanism.

[0008] Furthermore, the latch mechanism includes a latch, a latch linkage mechanism, a latch guide seat and a latch drive device, the latch is installed below the latch guide seat, the latch linkage mechanism is installed at the right end of the latch guide seat, the latch drive device is fixed to the rear wall of the mounting seat, and the latch linkage mechanism and the latch drive device are connected by a linkage rod.

[0009] Furthermore, the stop pin mechanism includes a stop pin, a stop pin connecting rod mechanism, a stop pin guide seat and a stop pin driving device, the stop pin is fixed on the stop pin guide seat, the stop pin connecting rod mechanism is installed on the stop pin, the stop pin driving device is connected to the stop pin connecting rod mechanism, and the stop pin guide seat is fixed on a boss on one side of the mounting seat.

[0010] Furthermore, the number of the latch mechanisms is 2 to 6 sets, which are arranged symmetrically on the left and right, and one set is fixedly provided at each of the left and right ends of the latch locking device.

[0011] Furthermore, the latch guide seat is provided with a guide groove, and the latch is installed below the latch guide seat through the guide groove, and the guide groove is set to be T-shaped, V-shaped or W-shaped.

[0012] Furthermore, the stop pin linkage mechanism is a four-bar linkage mechanism, which is Y-shaped as a whole. The bottom link is connected to the stop pin, the left link is installed with the stop pin driving device, and the right side is two links, forming a four-bar mechanism and a dead point position of movement.

[0013] Furthermore, the number of the blocking pin mechanisms is at least two, and one set is fixedly provided at each of the left and right ends of the latch locking device.

[0014] Furthermore, the detection sensor is a proximity switch.

[0015] Furthermore, the linkage rod is composed of 1-4 sections connected by connecting pins.

[0016] Furthermore, the cross section of the linkage rod is square or circular.

[0017] In summary, the beneficial effects of the present invention are:

[0018] (1) The present invention uses a latch mechanism in conjunction with a stop pin mechanism, and uses a detection sensor to detect the movement position of the latch and the stop pin to prevent the latch from falling out. In addition, a connecting rod mechanism is used in the latch mechanism and the stop pin mechanism to drive the latch and the stop pin to move. Even if the sensor does not detect and feedback the position signal of the latch and the stop pin, the dead point position of the connecting rod mechanism can be used to stop the push-out or retraction movement after the latch and the stop pin move to the extreme position, which can effectively prevent the latch from falling out after being locked, and has a better locking effect and higher safety.

[0019] (2) The present invention uses a linkage rod to connect multiple latch mechanisms, transmitting the driving force of the drive device, which can drive multiple latches to move simultaneously, increasing the number of latches and thus improving the load-bearing capacity and locking reliability of heavy objects. In addition, the linkage rod can be increased in length to accommodate different latch mechanism spacings, which provides strong versatility.

[0020] (3) The guide groove of the guide seat of the latch mechanism in the present invention can be T-shaped, V-shaped, or W-shaped, which increases the contact area between the latch and the guide groove, making the contact surface larger during the movement of the latch, improving the movement stability and force conditions, and providing better guidance.

[0021] (4) The movement of the entire mechanism of the utility model can be limited by the detection sensor and the electric drive device, and can also be limited by the movement dead point position of the mechanical structure connecting rod mechanism, and has good self-locking properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a front view of the overall structure of the utility model;

[0025] Figure 3 It is a top view of the overall mechanism of the utility model;

[0026] Figure 4 It is a right side view of the overall mechanism of the utility model;

[0027] Figure 5 It is a structural diagram of the latch mechanism of the utility model;

[0028] Figure 6 It is a top view of the latch mechanism of the present utility model;

[0029] Figure 7 It is a structural diagram of the retaining pin mechanism of the present utility model;

[0030] Figure 8This is a schematic diagram of the connection of the linkage rod of the utility model;

[0031] Figure 9 These are two cross-sectional schematic diagrams of the linkage rod of the present utility model;

[0032] Figure 10 It is a schematic diagram of the connection between the latch and the guide seat of the utility model.

[0033] Explanation of the accompanying figures: 1-latch mechanism, 11-latch, 12-latch connecting rod mechanism, 13-latch guide seat, 14-latch driving device; 2-stop pin mechanism, 21-stop pin, 22-stop pin connecting rod mechanism, 23-stop pin guide seat, 24-stop pin driving device; 3-mounting seat; 4-linkage rod, 41-connecting pin; 5-detection sensor. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Combine Figures 1 to 10 The following is a specific embodiment of the latch locking device provided by the present invention, and the specific contents are as follows:

[0036] An embodiment of the present utility model provides a latch locking device, including a latch mechanism 1, a stop pin mechanism 2, a mounting seat 3, a linkage rod 4 and a detection sensor 5. The latch mechanism 1 is fixed below the mounting seat 3, the stop pin mechanism 2 is fixed on a boss on one side of the mounting seat 3, the linkage rod 4 is fixed on the other side of the mounting seat 3, and the linkage rod 3 connects the latch mechanism 1. The detection sensor 5 is arranged on one side of the latch mechanism 1 and the stop pin mechanism 2, and is used to detect the movement position of the latch mechanism 1 and the stop pin mechanism 2. By using the latch mechanism 1 in conjunction with the stop pin mechanism 2 and detecting and feeding back the running positions of the latch mechanism and the stop pin mechanism through the detection sensor 5, the latch can be prevented from falling out during movement, thereby improving the safety of use.

[0037] In this embodiment, the latch mechanism 1 includes a latch 11, a latch linkage mechanism 12, a latch guide seat 13 and a latch drive device 14. The latch 11 is installed below the latch guide seat 13, the latch linkage mechanism 12 is installed at the right end of the latch guide seat 13, and the latch drive device 14 is fixed to the rear wall of the mounting seat 3. The latch linkage mechanism 12 and the latch drive device 14 are connected by a linkage rod 4. Through the setting of the linkage rod 4, multiple latch mechanisms can be connected to transmit the driving force of the latch drive device 14, driving multiple latches to move simultaneously, increasing the number of latches and thereby improving the load-bearing capacity and locking reliability of heavy objects.

[0038] In this embodiment, the stop pin mechanism 2 includes a stop pin 21, a stop pin connecting rod mechanism 22, a stop pin guide seat 23 and a stop pin driving device 24. The stop pin 21 is fixed on the stop pin guide seat 23, the stop pin connecting rod mechanism 22 is installed on the stop pin 21, the stop pin driving device 24 is connected to the stop pin connecting rod mechanism 22, and the stop pin guide seat 23 is fixed on the boss on one side of the mounting seat 3. The stop pin mechanism 2 is used in conjunction with the latch mechanism 1 to enhance the locking effect of the latch and prevent it from falling out.

[0039] In this embodiment, the number of the latch mechanisms 1 is 2 to 6 sets, which are symmetrically arranged on the left and right, and one set is fixedly arranged at each end of the left and right ends of the latch locking device. The symmetrical arrangement can make the entire latch locking device evenly stressed, have a long service life, and higher stability during use. The number of settings is matched with the number of lock holes required for lifting heavy objects, and the corresponding number of latch mechanisms 1 is used. The preferred number is 2 sets, which is conducive to balanced lifting of heavy objects. The number of latch mechanisms 1 does not exceed 6 sets. Too many latches will affect the linkage rod 4 and drive all latches 21 to move simultaneously.

[0040] In this embodiment, the latch guide seat 13 is provided with a guide groove, and the latch 11 is installed below the latch guide seat 13 through the guide groove. The guide groove is set to be T-shaped, V-shaped or W-shaped, which can increase the contact area between the latch 11 and the guide groove, so that the contact surface of the latch 11 is larger during the movement of the latch 11, thereby improving the movement stability and force conditions, and having better guidance performance. The T-shape is preferred.

[0041] In this embodiment, the stop pin linkage mechanism 22 is a four-bar linkage mechanism, which is Y-shaped as a whole. The bottom link is connected to the stop pin 21, the left link is installed with the stop pin driving device 24, and the right is two links, forming a four-bar mechanism and a dead point position of movement. Through the setting of this structure, even if the detection sensor 5 does not detect and feedback the position signal of the stop pin 21, the dead point position of the stop pin linkage mechanism 22 can be used to make the stop pin 21 move to the extreme position and then stop the push-out or retraction movement, thereby improving the safety of use. The latch linkage mechanism 12 is also a four-bar linkage mechanism, and its function also includes when the detection sensor 5 does not detect and feedback the position signal of the latch 11, the dead point position of the latch linkage mechanism 12 can be used to make the latch 11 move to the extreme position and then stop the push-out or retraction movement, thereby effectively preventing the latch from falling out after being locked.

[0042] In this embodiment, the number of the pin blocking mechanism 2 is at least 2 sets, and one set is fixedly provided at the left and right ends of the latch locking device respectively. The pin blocking mechanism 2 is used in conjunction with the latch mechanism 1, and the number can be increased according to actual usage requirements.

[0043] In this embodiment, the detection sensor 5 is a proximity switch, which is used to detect whether the latch 11 is pushed out or retracted into place, that is, locked or unlocked. The number of detection sensors 5 is set so that one latch mechanism 1 is equipped with at least one detection sensor 5, and one pin mechanism 2 is equipped with at least one detection sensor 5.

[0044] In this embodiment, the linkage rod 4 is composed of 1-4 sections connected by a connecting pin 41. In order to adapt to the spacing of different latch mechanisms 1, the linkage rod 4 can be increased in length, but an excessively long linkage rod will increase the difficulty of processing. Therefore, the linkage rod can be composed of multiple short rods connected to form the linkage rod 4. The number of different connecting sections is mainly considered to consider the difficulty of processing. Considering the rigidity of use, 1 section is preferably the best.

[0045] In this embodiment, the cross-section of the linkage rod 4 is square or circular, which can be selected according to the requirements of use. When the linkage rod 4 is too long, a linkage rod with a square cross-section is better than a circular cross-section, and can better improve the synchronization of the movement of multiple latch mechanisms driven by the linkage rod.

[0046] In this embodiment, the latch drive device 14 and the stop pin drive device 24 are both electric push rods. The latch drive device 14 performs linear reciprocating motion to push the linkage rod 4, and the linkage rod 4 drives the latch connecting rod mechanism 12 to perform an irregular or full circle rotational motion, thereby driving multiple latches 11 to perform reciprocating motion at the same time, so that the latch 11 is pushed out or retracted. The stop pin drive device 24 performs linear reciprocating motion, driving the stop pin connecting rod mechanism 22 to perform an irregular or full circle rotational motion, thereby driving the stop pin 21 to perform reciprocating motion, realizing the pushing out or retracting of the stop pin 21.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made based on the concept of the present invention and the contents of the present invention description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A latch locking device, characterized in that: The invention comprises a latch mechanism (1), a stop pin mechanism (2), a mounting seat (3), a linkage rod (4) and a detection sensor (5), wherein the latch mechanism (1) is fixed below the mounting seat (3), the stop pin mechanism (2) is fixed on a boss on one side of the mounting seat (3), the linkage rod (4) is fixed on the other side of the mounting seat (3), the linkage rod (4) is connected to the latch mechanism (1), and the detection sensor (5) is arranged on one side of the latch mechanism (1) and the stop pin mechanism (2) and is used to detect the movement positions of the latch mechanism (1) and the stop pin mechanism (2); The latch mechanism (1) comprises a latch (11), a latch link mechanism (12), a latch guide seat (13) and a latch drive device (14); the latch (11) is mounted below the latch guide seat (13); the latch link mechanism (12) is mounted on the right end of the latch guide seat (13); the latch drive device (14) is fixed to the rear wall of the mounting seat (3); the latch link mechanism (12) and the latch drive device (14) are connected via a linkage rod (4); The stop pin mechanism (2) comprises a stop pin (21), a stop pin connecting rod mechanism (22), a stop pin guide seat (23) and a stop pin driving device (24); the stop pin (21) is fixed on the stop pin guide seat (23); the stop pin connecting rod mechanism (22) is mounted on the stop pin (21); the stop pin driving device (24) is connected to the stop pin connecting rod mechanism (22); and the stop pin guide seat (23) is fixed on a boss on one side of the mounting seat (3).

2. The latch locking device according to claim 1, wherein: The latch mechanism (1) is provided in 2 to 6 sets, which are arranged symmetrically on both sides, and one set is fixedly provided at each of the left and right ends of the latch locking device.

3. The latch locking device according to claim 1, wherein: The latch guide seat (13) is provided with a guide groove, and the latch (11) is installed below the latch guide seat (13) through the guide groove, and the guide groove is configured to be T-shaped, V-shaped or W-shaped.

4. The latch locking device according to claim 1, wherein: The stop pin connecting rod mechanism (22) is a four-bar connecting rod mechanism, which is Y-shaped as a whole. The bottom connecting rod is connected to the stop pin (21), the left connecting rod is installed with the stop pin driving device (24), and the right side is two connecting rods, forming a four-bar mechanism and a motion dead point position.

5. The latch locking device according to claim 1, wherein: The number of the blocking pin mechanisms (2) provided is at least two, and one set is fixedly provided at each of the left and right ends of the latch locking device.

6. The latch locking device according to claim 1, wherein: The detection sensor (5) is a proximity switch.

7. The latch locking device according to claim 1, wherein: The linkage rod (4) is composed of 1 to 4 sections connected via a connecting pin (41).

8. The latch locking device according to claim 7, wherein: The cross section of the linkage rod (4) is square or circular.

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