Plug pin connecting assembly of crane

Abstract

The utility model relates to the technical field of crane accessories, and discloses a crane plug pin connecting assembly which comprises a mounting bottom plate and an electric hydraulic oil cylinder, a placing frame is arranged at one end of the top of the mounting bottom plate, a pin sleeve is arranged at the other end of the top of the mounting bottom plate, the electric hydraulic oil cylinder is arranged at the top of the placing frame, and a connector is arranged at one end of a piston rod of the electric hydraulic oil cylinder. After the connecting column enters the connector, the angle of the connecting column is adjusted to enable the inserting hole to be right opposite to the inserting rod, then the electromagnet is turned off, and under the elastic force effect of the spring, the connecting column can be inserted into the inserting rod, so that the connecting column can be inserted into the connecting hole. The limiting plate and the inserting rod are driven to ascend together until the inserting rod is inserted into the inserting hole, at the moment, the inserting and pulling pin and the electric hydraulic oil cylinder are connected, and the connecting rod, the cylinder pin and the pin sleeve are driven to be inserted and pulled through stretching of the piston rod of the electric hydraulic oil cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of crane accessories, in particular to a plug-in pin connection assembly for a crane. Background Technique

[0002] The plug-in pin connection assembly of a crane is an important mechanical connection device for connecting and fixing different components of the crane. Through the insertion and extraction actions of the connection pins, different components of the crane, such as boom, main girder, etc., are tightly connected together to ensure the integrity of the overall structure and function of the crane.

[0003] The plug-in pin connection assembly can bear and transmit different degrees of loads, including vertical and horizontal forces, to ensure the stability and safety of the crane during operation. During the use of the crane, it is necessary to replace or adjust some components as needed. The plug-in pin connection assembly allows users to easily disassemble and install these components, thus simplifying the maintenance and upgrade processes.

[0004] The existing Chinese patent (CN217102828U) discloses a plug-in pin connection assembly, a crane boom and a crane. The plug-in pin connection assembly includes: two plug-in pin connection devices, and one end of the two plug-in pin connection devices is butt-connected. The plug-in pin connection device includes a telescopic cylinder assembly, a driving device and a connection pin. The driving device is installed in the telescopic cylinder assembly, and the driving device is connected to the connection pin to drive the connection pin to perform insertion and extraction actions. The two plug-in pin connection devices are butt-connected, and each plug-in pin connection device drives a connection pin to perform insertion and extraction disassembly and assembly actions on both sides of the component to be connected.

[0005] In the prior art, the connection between the driving device and the connection pin is generally a fixed connection or a detachable connection realized by bolts, etc. However, there are many plug-in pin parts on the crane, and the driving device needs to be easily disassembled and replaced to facilitate the insertion and extraction operations of the plug-in pins at different parts. In the above technical solution and the prior art, the connection assembly of the plug-in pin cannot be quickly disassembled and assembled with the driving device, which increases the equipment use cost of the plug-in pin of the crane. Content of the Utility Model

[0006] The purpose of the utility model is to provide a plug-in pin connection assembly for a crane to solve the problems put forward in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: a crane pin insertion and extraction connection assembly, comprising: a mounting base plate and an electro-hydraulic cylinder. One end of the top of the mounting base plate is provided with a placement rack, and the other end is provided with a pin sleeve. The top of the placement rack is provided with an electro-hydraulic cylinder. One end of the piston rod of the electro-hydraulic cylinder is provided with a connection head. Inside the pin sleeve is a cylinder pin. One end of the cylinder pin is provided with a connecting rod, and one end of the connecting rod is provided with a connecting column. Inside the connection head is a connection hole for the connecting column to be inserted into. Inside the connecting column is a jack. Below the jack at the bottom of the connection head is a fixing plate. Inside the fixing plate is movably inserted a plug rod, and the bottom end of the plug rod is provided with a limiting plate. Between the limiting plate and the fixing plate is a spring.

[0008] Further, on one side of the middle of the top surface of the mounting base is provided a guide plate, and inside the guide plate is opened a guide hole for the connecting column to be movably inserted into.

[0009] Further, on the top of the placement rack is opened a C-shaped opening, and one end of the electro-hydraulic cylinder is provided with a fixed shaft, and the fixed shaft is placed inside the C-shaped opening on the top of the placement rack.

[0010] Further, on one side of the bottom of the connection head is provided an L-shaped bracket, and on the top of one side of the L-shaped bracket is provided an electromagnet, and the electromagnet is located directly below the limiting plate, and the limiting plate is made of a magnetically conductive material.

[0011] Further, the top of the plug rod is a ball head, and there is a clearance fit between the plug rod and the jack.

[0012] Further, on both sides of the outer wall of the top of the electro-hydraulic cylinder are provided handles.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] In the present utility model, through the provided electro-hydraulic cylinder, connection head and connecting rod, when the crane pin insertion and extraction connection assembly is in use, the fixed shaft at one end of the electro-hydraulic cylinder is placed on the placement rack, and a mobile power source is used to supply power to the electro-hydraulic cylinder and the electromagnet. The electro-hydraulic cylinder is started, so that the piston rod of the electro-hydraulic cylinder extends until the connecting column enters the connection head. At this time, the electromagnet is in an energized state. Through the magnetic adsorption between the electromagnet and the limiting plate, the top end of the plug rod is located below the connecting column, which does not affect the connecting column entering the connection head. After the connecting column enters the connection head, the angle of the connecting column is adjusted so that the jack is aligned with the plug rod. Then the electromagnet is turned off, and under the elastic force of the spring, the limiting plate and the plug rod are driven to rise together until the plug rod is inserted into the jack. At this time, the pin insertion and extraction are completed with the electro-hydraulic cylinder. Through the telescopic movement of the piston rod of the electro-hydraulic cylinder, the insertion and extraction of the connecting rod and the cylinder pin with the pin sleeve are driven;

[0015] After the cylinder pin is inserted and removed, start the electromagnet to magnetically attract and lower the limit plate and the insertion rod again, so that the insertion rod is separated from the insertion hole, which is convenient for the subsequent separation of the connector and the connection column, convenient for the disassembly of the electric hydraulic cylinder, and convenient for the electric hydraulic cylinder to operate on other cylinder pins that need to be inserted and removed, saving equipment costs. Description of the Drawings

[0016] Figure 1 It is a three-dimensional view of the pin insertion and removal connection assembly of the crane of the present utility model;

[0017] Figure 2 It is a three-dimensional view of the pin insertion and removal connection assembly of the crane of the present utility model;

[0018] Figure 3 It is a partial sectional structure diagram of the pin insertion and removal connection assembly of the crane of the present utility model;

[0019] Figure 4 is Figure 3 The enlarged schematic diagram of the partial sectional structure in.

[0020] In the figure: 1. Installation base plate; 2. Placing rack; 3. Electric hydraulic cylinder; 4. Fixed shaft; 5. Connector; 6. Pin sleeve; 7. Cylinder pin; 8. Connecting rod; 9. Guide plate; 10. L-shaped bracket; 11. Electromagnet; 12. Connection column; 13. Insertion hole; 14. Insertion rod; 15. Spring; 16. Limit plate; 17. Fixed plate. Detailed Implementation Manner

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Please refer to Figures 1-4, the utility model provides a technical solution: a crane plug - in pin connection assembly, including: a mounting base plate 1 and an electro - hydraulic cylinder 3. One end of the top of the mounting base plate 1 is provided with a placing rack 2, and the other end is provided with a pin sleeve 6. The electro - hydraulic cylinder 3 is arranged on the top of the placing rack 2. One end of the piston rod of the electro - hydraulic cylinder 3 is provided with a connection head 5. Inside the pin sleeve 6 is provided with a cylinder pin 7. One end of the cylinder pin 7 is provided with a connecting rod 8. One end of the connecting rod 8 is provided with a connecting column 12. Inside the connection head 5 is provided with a connection hole for the connecting column 12 to insert. Inside the connecting column 12 is provided with a jack 13. At the bottom of the connection head 5 and below the jack 13 is provided with a fixing plate 17. Inside the fixing plate 17 is movably inserted with a plug rod 14. The bottom end of the plug rod 14 is provided with a limiting plate 16. Between the limiting plate 16 and the fixing plate 17 is provided with a spring 15. After the connecting column 12 enters the connection head 5, adjust the angle of the connecting column 12 so that the jack 13 is aligned with the plug rod 14. Then turn off the electromagnet 11. Under the elastic force of the spring 15, drive the limiting plate 16 and the plug rod 14 to rise together until the plug rod 14 is inserted into the jack. At this time, the connection of the plug - in pin and the electro - hydraulic cylinder 3 is completed. Through the telescopic movement of the piston rod of the electro - hydraulic cylinder 3, drive the connecting rod 8 and the cylinder pin 7 to be inserted and pulled out of the pin sleeve 6.

[0023] On one side of the middle of the top surface of the mounting base 1 is provided with a guiding plate 9. Inside the guiding plate 9 is opened a guiding hole for the connecting column 12 to movably insert. Through the cooperation of the guiding plate 9 and the guiding hole, realize the guiding when the connecting rod 8 translates, ensure the smooth movement of the connecting rod 8, and improve the smoothness when the cylinder pin 7 is connected with the pin sleeve 6.

[0024] On the top of the placing rack 2 is opened a C - shaped opening. One end of the electro - hydraulic cylinder 3 is provided with a fixed shaft 4. The fixed shaft 4 is placed in the C - shaped opening on the top of the placing rack 2. Through the cooperation of the C - shaped opening and the fixed shaft 4, realize the placement of one end of the electro - hydraulic cylinder 3. While placing, it can realize the up - and - down rotation of the electro - hydraulic cylinder 3, which is convenient for the angle adjustment when the connection head 5 is docked with the connecting column 12. For the other end of the electro - hydraulic cylinder 3, there is also support when the connection head 5 and the connecting column 12 are connected.

[0025] On one side of the bottom of the connection head 5 is provided with an L - shaped bracket 10. On the top of one side of the L - shaped bracket 10 is provided with an electromagnet 11. The electromagnet 11 is located directly below the limiting plate 16. The limiting plate 16 is made of a magnetically conductive material. Turn off the electromagnet 11. Under the elastic force of the spring 15, drive the limiting plate 16 and the plug rod 14 to rise together until the plug rod 14 is inserted into the jack. At this time, the connection of the plug - in pin and the electro - hydraulic cylinder 3 is completed. Start the electromagnet 11, and magnetically attract and lower the limiting plate 16 and the plug rod 14 again, so that the plug rod 14 is separated from the jack.

[0026] The top of the plug rod 14 is a ball head. The plug rod 14 and the jack 13 are in clearance fit, which is convenient for the plug rod 14 to insert into the jack 13 to realize the connection between the electro - hydraulic cylinder 3 and the connecting rod 8.

[0027] On both sides of the outer wall at the top of the electro-hydraulic cylinder 3, there are handles, which facilitate the lifting and lowering of the electro-hydraulic cylinder 3.

[0028] When the crane plug-in pin connection assembly is in use, place the fixed shaft at one end of the electro-hydraulic cylinder 3 on the placement rack 2, supply power to the electro-hydraulic cylinder 3 and the electromagnet 11 through a mobile power source, start the electro-hydraulic cylinder 3, so that the piston rod of the electro-hydraulic cylinder 3 extends until the connecting column 12 enters the inside of the connector 5. At this time, the electromagnet 11 is in the energized state. Through the magnetic adsorption of the electromagnet 11 and the limiting plate 16, the top of the plug rod 14 is located below the connecting column 12, without affecting the connecting column 12 entering the connector 5. When the connecting column 12 enters the connector 5, adjust the angle of the connecting column 12 so that the jack 13 is aligned with the plug rod 14, and then turn off the electromagnet 11. Under the elastic force of the spring 15, drive the limiting plate 16 and the plug rod 14 to rise together until the plug rod 14 is inserted into the jack. At this time, the plug-in pin is connected to the electro-hydraulic cylinder 3. Through the telescopic movement of the piston rod of the electro-hydraulic cylinder 3, drive the connecting rod 8 and the cylinder pin 7 to insert and pull out from the bushing 6;

[0029] After the cylinder pin 7 is inserted and pulled out, start the electromagnet 11, magnetically attract and lower the limiting plate 16 and the plug rod 14 again, so that the plug rod 14 is separated from the jack, which is convenient for the subsequent separation of the connector 5 and the connecting column 12, convenient for the disassembly of the electro-hydraulic cylinder 3, and convenient for the electro-hydraulic cylinder 3 to operate on other cylinder pins that need to be inserted and pulled out, saving equipment costs.

[0030] Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. Crane pin insertion and extraction connection assembly, comprising: An installation base plate (1) and an electro-hydraulic cylinder (3), characterized in that: at one end of the top of the installation base plate (1), there is a placement rack (2), and at the other end, there is a pin sleeve (6). On the top of the placement rack (2), there is an electro-hydraulic cylinder (3). One end of the piston rod of the electro-hydraulic cylinder (3) is provided with a connection head (5). Inside the pin sleeve (6), there is a cylinder pin (7). One end of the cylinder pin (7) is provided with a connecting rod (8). One end of the connecting rod (8) is provided with a connecting column (12). Inside the connection head (5), there is a connection hole for the connecting column (12) to be inserted. Inside the connecting column (12), there is a jack (13). Below the jack (13) at the bottom of the connection head (5), there is a fixing plate (17). Inside the fixing plate (17), there is an insertion rod (14) movably inserted. At the bottom end of the insertion rod (14), there is a limiting plate (16). Between the limiting plate (16) and the fixing plate (17), there is a spring (15).

2. The crane plug-in pin connection assembly according to claim 1, characterized in that: On one side of the middle part of the top surface of the installation base (1), there is a guide plate (9). Inside the guide plate (9), there is a guide hole for the connecting column (12) to be movably inserted.

3. The crane plug-in pin connection assembly according to claim 1, characterized in that: On the top of the placement rack (2), there is a C-shaped opening. One end of the electro-hydraulic cylinder (3) is provided with a fixed shaft (4). The fixed shaft (4) is placed in the C-shaped opening on the top of the placement rack (2).

4. The crane plug-in pin connection component according to claim 1, characterized in that: On one side of the bottom of the connection head (5), there is an L-shaped bracket (10). On the top of one side of the L-shaped bracket (10), there is an electromagnet (11). The electromagnet (11) is located directly below the limiting plate (16). The limiting plate (16) is made of a magnetically conductive material.

5. The crane plug-in pin connection component according to claim 1, characterized in that: The top of the insertion rod (14) is a ball head. There is a clearance fit between the insertion rod (14) and the jack (13).

6. The crane pin insertion and extraction connection assembly according to claim 1, characterized in that: On both sides of the outer wall at the top of the electro-hydraulic cylinder (3), there are handles.

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