Locking mechanism

Abstract

The utility model discloses a locking mechanism which comprises a lifter, a mounting seat, a bolt, a pin hole seat and a connecting rod mechanism, the lifter and the connecting rod mechanism are arranged on the mounting seat, the lifter is connected with the bolt through a hinge shaft, the lifter is in threaded connection with the hinge shaft, a connecting block is arranged on the bolt, and the connecting block is connected with the connecting rod mechanism through a pull rod. The device can comprehensively limit the space movement of equipment, is large in locking load, small in mechanism space size, simple in structure and easy to maintain, and achieves the effects that the device can be comprehensively locked through one spiral elevator, the characteristic that a connecting rod mechanism passes through a dead point is adopted, locking is reliable, and the locking load is large. And a plug pin is directly inserted into a pin hole for azimuth locking, so that simplicity, high efficiency and high impact resistance are realized. The mechanism is simple in structure, convenient to install and maintain and small in needed space.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical structure design, and particularly relates to a locking mechanism. Background Art

[0002] With the development of science and technology, more and more equipment has become large and complex, and some equipment can also rotate around its own central axis and needs to be transported by vehicles, which puts higher requirements on the vehicle's carrying capacity and stability. Since the size and structure of the same type of vehicles are similar, it will obviously cost more to change the vehicle structure in order to transport such large rotating equipment. Therefore, it is particularly important to improve the vehicle's transportation stability on the basis of making full use of the vehicle's internal space.

[0003] During the transportation of large rotating equipment by vehicle, due to objective factors such as vehicle structure and road conditions, the equipment will be impacted by loads in all directions. Therefore, the equipment needs to be locked and fixed during transportation to prevent the equipment from moving in the height (vertical) direction or accidentally rotating in direction and causing damage or personal injury. Although the traditional mechanical hydraulic locking mechanism can provide sufficient locking force and the force transmission is smooth and reliable, its spatial dimensions will increase accordingly as the weight of the equipment increases, and there are many limitations. If the hydraulic system is not sealed well or there is a leakage problem, it will also affect the locking effect. Therefore, there is an urgent need for a locking mechanism for large rotating equipment with a simple structure, easy maintenance, small spatial dimensions, and high reliability.

[0004] The patent document with publication number CN217948994U discloses an anti-collision latch device for locking a dynamic ring beam. The anti-collision latch device for locking a dynamic ring beam described in the utility model controls the outward movement of the latch by the length of the rack to avoid the problem of the latch moving forward beyond the limit and causing collision. However, the device is mainly used for limit locking in a single direction. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a locking mechanism.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides a locking mechanism, comprising a lifter, a mounting seat, a latch, a pin hole seat and a connecting rod mechanism, wherein the lifter and the connecting rod mechanism are arranged on the mounting seat, the lifter is connected to the latch through an articulated shaft, the lifter is threadedly connected to the articulated shaft, a connecting block is arranged on the latch, and the connecting block is connected to the connecting rod mechanism through a pull rod.

[0008] Preferably, the connecting rod mechanism includes a rocker, a connecting rod and a locking block, one end of the rocker is connected to the pull rod, the other end of the rocker is connected to the connecting rod, the other end of the connecting rod is connected to the locking block, and the other end of the locking block is connected to the mounting seat.

[0009] Preferably, the hinge shaft is connected to the latch pin via a stop shaft, and a proximity switch A and a proximity switch B are arranged on the mounting seat, and the proximity switch A and the proximity switch B are arranged on the side close to the stop shaft.

[0010] Preferably, a limiting shaft is arranged on the mounting seat, and the limiting shaft is arranged between the rocker and the locking block.

[0011] Preferably, an equipment erecting frame is provided on the mounting seat, and the equipment erecting frame is provided on one side of the locking block.

[0012] Preferably, a pin hole is provided on the pin hole seat, and the pin hole seat is coaxially arranged with the plug pin.

[0013] The beneficial effects of the utility model are:

[0014] The utility model can restrict the spatial movement of equipment in all aspects, and has a large locking load, a small mechanism space size, a simple structure and easy maintenance. The effects achieved are as follows: the mechanism can realize the all-round locking of the equipment through a spiral elevator, and adopts the characteristics of the connecting rod mechanism passing the dead point, the locking is reliable, and the locking load is large. The azimuth locking directly uses the pin to be inserted into the pin hole, which is simple, efficient and strong in impact resistance. The mechanism has a simple structure, is easy to install and maintain, and requires a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a main structural schematic diagram of the utility model;

[0016] Figure 2 It is a right view structural schematic diagram of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the connecting rod mechanism of the utility model;

[0018] In the figure: 1-lifting machine, 2-articulated shaft, 3-mounting seat, 4-proximity switch A, 5-proximity switch B, 6-latch pin, 7-pin hole seat, 8-connecting block, 9-pull rod, 10-rocker, 11-limiting shaft, 12-connecting rod, 13-locking block, 14-equipment erecting frame, 15-stop shaft. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0020] Example:

[0021] like Figures 1 to 3As shown, a locking mechanism includes a lifter 1, a mounting seat 3, a latch 6, a pin hole seat 7 and a connecting rod mechanism, wherein the lifter 1 and the connecting rod mechanism are arranged on the mounting seat 3, the lifter 1 is connected to the latch 6 through an articulated shaft 2, the lifter 1 and the articulated shaft 2 are threadedly connected and cannot move relative to each other, a connecting block 8 is arranged on the latch 6, the latch 6 and the connecting block 8 are welded and connected, the connecting block 8 is connected to the connecting rod mechanism through a pull rod 9, the connecting block 8 and the pull rod 9 are connected through a pin shaft and can rotate relative to each other. The lifter 1 is a spiral lifter.

[0022] The connecting rod mechanism is arranged in a C shape, and includes a rocker 10, a connecting rod 12 and a locking block 13. One end of the rocker 10 is connected to the pull rod 9 through a pin, the other end of the rocker 10 is connected to the connecting rod 12 through a pin, the other end of the connecting rod 12 is connected to the locking block 13 through a pin, and the other end of the locking block 13 is connected to the mounting seat 3 through a pin. The connecting rod mechanism is a high and low direction locking mechanism.

[0023] The articulated shaft 2 and the bolt 6 are connected by a stop shaft 15 and cannot move relative to each other. A proximity switch A4 and a proximity switch B5 are arranged on the mounting seat 3. The proximity switches A4 and B5 are arranged on the side close to the stop shaft 15 and are arranged in a vertical linear distribution. The proximity switches A4 and B5 transmit the stop signal of the bolt 6 to the screw jack 1.

[0024] The mounting seat 3 is provided with a limiting shaft 11, and the limiting shaft 11 is arranged between the rocking arm 10 and the locking block 13. The limiting shaft 11 plays a role of mechanical limiting on the rocking arm 10.

[0025] The mounting seat 3 is provided with an equipment erecting frame 14 , which is arranged on one side of the locking block 13 , and is installed on the equipment to be fixed.

[0026] The pin hole seat 7 is provided with a pin hole, and the pin hole seat 7 is coaxially arranged with the plug pin 6. The pin hole seat 7 is installed on the transport vehicle, and can also be replaced by arranging a pin hole on the transport vehicle.

[0027] Working principle: During the locking process, the screw lift 1 drives the articulated shaft 2 to move downward, thereby driving the latch 6 to move linearly downward. Since the connecting block 8 is welded to the latch 6, the connecting block 8 also moves linearly downward. Under the action of the connecting block 8, the pull rod 9 moves in a plane, and the plane movement of the pull rod 9 drives the rocker 10 to rotate clockwise, thereby driving the connecting rod 12 to move in a plane, and the connecting rod 12 pushes the locking block 13 to rotate clockwise and press against the equipment erection frame 14. When the latch 6 continues to descend, the connecting rod mechanism composed of the rocker 10, the connecting rod 12, and the locking block 13 will reach the dead point and pass the dead point, so that the rocker 10 contacts the limit shaft 11, and the locking block 13 also just presses the equipment erection frame 14, limiting the height movement of the equipment erection frame 14. While the locking block 13 is pressing the equipment erection frame 14, the bolt 6 has been inserted into the pin hole seat 7 to a sufficient distance. At this time, the proximity switch B5 located on the mounting seat 3 collects the proximity signal of the bolt 6 and transmits it to the screw elevator 1 to stop the descent of the bolt 6. Since the bolt 6 is inserted into the pin hole, the rotation of the equipment in the direction is limited.

[0028] During the unlocking process, the screw jack 1 pulls the bolt 6 upward, causing the pull rod 9, the rocker 10, the connecting rod 12 and the locking block 13 to move in the opposite direction to achieve the unlocking purpose. After the unlocking purpose is achieved, the proximity switch A4 located on the mounting seat 3 collects the proximity signal of the bolt 6 and transmits it to the screw jack 1, causing it to stop the rise of the bolt 6. The entire unlocking process is equivalent to the reverse process of the locking process.

[0029] The size of the locking load is not related to the thrust of the screw lift 1. The height is only related to the structural strength of the locking block 14, the connecting rod 12 and the limit shaft 11, because when the equipment erection frame 14 has an upward movement tendency, due to the dead point, the force will only be transmitted in the opposite direction to the locking block 14, the connecting rod 12 and the limit shaft 11; the orientation is only related to the shear strength of the latch 6, because when the equipment has a tendency to rotate, since the mounting seat 3 is installed on the equipment and the latch 6 is inserted in the frame pin hole seat 7, the force will only be transmitted to the latch 6 laterally.

[0030] The locking mechanism is an automatic locking mechanism that limits height and azimuth movement. The entire mechanism is fixedly installed on the equipment by screw connection, and is easy to disassemble and assemble.

Claims

1. A locking mechanism, characterized in that: The invention comprises a lifter (1), a mounting seat (3), a latch (6), a pin hole seat (7) and a connecting rod mechanism, wherein the lifter (1) and the connecting rod mechanism are arranged on the mounting seat (3), the lifter (1) is connected to the latch (6) via an articulated shaft (2), the lifter (1) is threadedly connected to the articulated shaft (2), a connecting block (8) is arranged on the latch (6), and the connecting block (8) is connected to the connecting rod mechanism via a pull rod (9).

2. A locking mechanism according to claim 1, characterized in that: The connecting rod mechanism comprises a rocker (10), a connecting rod (12) and a locking block (13); one end of the rocker (10) is connected to the pull rod (9); the other end of the rocker (10) is connected to the connecting rod (12); the other end of the connecting rod (12) is connected to the locking block (13); and the other end of the locking block (13) is connected to the mounting seat (3).

3. A locking mechanism according to claim 1, characterized in that: The hinge shaft (2) is connected to the latch pin (6) via a stop shaft (15), and a proximity switch A (4) and a proximity switch B (5) are arranged on the mounting seat (3), wherein the proximity switch A (4) and the proximity switch B (5) are arranged on a side close to the stop shaft (15).

4. A locking mechanism according to claim 1, characterized in that: A limiting shaft (11) is arranged on the mounting seat (3), and the limiting shaft (11) is arranged between the rocker (10) and the locking block (13).

5. A locking mechanism according to claim 1, characterized in that: The mounting seat (3) is provided with an equipment erection frame (14), and the equipment erection frame (14) is arranged on one side of the locking block (13).

6. A locking mechanism according to claim 1, characterized in that: The pin hole seat (7) is provided with a pin hole, and the pin hole seat (7) and the latch pin (6) are coaxially arranged.

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