A new type of cylinder arm pin emergency device

Abstract

The utility model discloses a novel cylinder arm pin emergency device, including emergency device, and emergency device includes emergency quick insertion tool no.

Description

Technical Field

[0001] This utility model relates to the field of cranes, and in particular to a novel emergency device for cylinder boom pins. Background Technology

[0002] With the continuous development of crane technology, single-cylinder pin-type crane booms are widely used due to their advantages such as light weight and good overall stability. However, if the original single-cylinder pin control system fails during the extension and retraction of this type of crane boom, the boom will be unable to retract, posing a significant risk. Furthermore, the long boom length makes maintenance inconvenient.

[0003] Existing technologies, such as "An Emergency Retraction Method and Device for a Single-Cylinder Pin-Type Telescopic Boom" (CN102849631A), rely on the cable of a built-in cable reel for emergency operation. A length mark for the telescopic cylinder is set on the cable. The length of the telescopic cylinder is determined based on the mark at the point where the cable is tangent to the cable reel. The telescopic cylinder, its pin, and the arm pins of each section of the telescopic boom are controlled according to the retraction procedure to retract the single-cylinder pin-type telescopic boom. However, this method does not provide on-site operators with an actual device for emergency cylinder and arm pin operation, and the control procedure relies solely on visual estimation of the telescopic cylinder length, lacking precision.

[0004] Therefore, it is necessary to develop a new type of cylinder arm pin emergency device to overcome the above problems. Utility Model Content

[0005] Purpose of the utility model: To address the shortcomings and defects of the existing technology, this utility model provides a novel emergency device for the boom pin. In the event of failure of the original single-cylinder pin system, the boom pin can be controlled simply by opening and closing the solenoid valve, thereby enabling emergency extension and retraction of the boom; improving safety, accuracy, and maintainability of the crane boom.

[0006] Technical Solution: This utility model discloses a novel emergency device for cylinder arm pins, characterized in that it includes an emergency device comprising an emergency quick-connect fitting one, an emergency quick-connect fitting two, an EW connector, an emergency hose, a quick-connect fitting B1, a telescopic rod, a quick-connect fitting B2, and a dust plug; the emergency quick-connect fitting one and the emergency quick-connect fitting two are joined together through a round hole; the emergency quick-connect fitting one has two oil ports, one of which is connected to the emergency hose through the EW connector, and the other oil port is connected to the quick-connect fitting B2; one end of the emergency quick-connect fitting two is a round hole for connecting with the emergency quick-connect fitting one, and the other end is an external thread for connecting with the telescopic rod.

[0007] The emergency hose is equipped with a quick-connect fitting B1.

[0008] The quick-connector B2 is equipped with a dust plug.

[0009] The external thread of the emergency quick-connect tool II is an M8 external thread.

[0010] The emergency device is connected to quick-connect connector A1, quick-connect connector B2 is connected to emergency oil source interface A2 or to emergency oil source interface A3.

[0011] The emergency oil source interface A2 and the emergency oil source interface A3 are located at both ends of the lower slide block of the rear cylinder head of the telescopic cylinder.

[0012] The quick-connector A1 is connected to one end of the ball valve, and the other end of the ball valve is connected to the pilot valve reserved port of the pilot valve.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: In the event of failure of the original single-cylinder pin system, the present invention can control the cylinder arm pin by simply controlling the opening and closing of the solenoid valve, thereby realizing the emergency extension and retraction of the crane arm; no built-in cable or marking is required, making operation simple and convenient; it improves safety, accuracy, and maintainability of the crane arm. Attached Figure Description

[0014] Figure 1 This is a diagram showing the usage state of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a structural diagram of the emergency quick-connect tooling of this utility model;

[0017] In the diagram, 1 is a telescopic cylinder; 2 is an emergency device; 3 is a pilot valve; 4 is a pilot valve pre-drilled port; 5 is a ball valve; 6 is a quick-connect connector A1; 7 is an emergency oil source interface A2; 8 is an emergency oil source interface A3; 21 is an emergency quick-connect tooling one; 22 is an emergency quick-connect tooling two; 23 is an EW connector; 24 is an emergency hose; 25 is a quick-connect connector B1; 26 is a telescopic rod; 27 is a quick-connect connector B2; 28 is a dust plug; and 29 is an M8 external thread. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] The single-cylinder pin of this utility model is a mechanical structure installed on the telescopic cylinder of a crane. It is the core device for quickly locking and releasing the telescopic boom sections of the crane by driving the cylinder arm pin mechanism through the hydraulic cylinder.

[0020] like Figure 2This utility model discloses a novel emergency device for the boom pin. When the solenoid valve on the telescopic cylinder fails, it directly provides power to the drive cylinder using the oil source at the crane's pilot valve, thereby controlling the boom pin and improving the maintainability of the crane boom. The emergency device 2 includes an emergency quick-connect tool 1 21, an emergency quick-connect tool 22, an EW connector 23, an emergency hose 24, a quick-connect connector B1 25, a telescopic rod 26, a quick-connect connector B2 27, and a dust plug 28. The emergency quick-connect tool 1 and the emergency quick-connect tool 22 are connected together through a round hole. The emergency tool 1 21 has two oil ports; one port connects to the emergency hose 24 via the EW connector 23, and the other port connects to the quick-connect connector B2 27. One end of the emergency tool 22 is a round hole for connecting to the emergency tool 1 21, and the other end is an external thread that can be screwed onto the telescopic rod 26. When the emergency oil source interface of the rear cylinder head of the telescopic cylinder is far from the tail of the basic boom, the telescopic rod 26 is used for auxiliary quick-connection.

[0021] like Figure 1 When the emergency boom pin device is in use, the boom pin is driven by a hydraulic cylinder. Emergency oil supply interfaces A27 and A38 for the boom pin drive cylinder are pre-installed at both ends of the sliding block of the rear cylinder head of the telescopic cylinder 1. A pre-installed pilot valve port 4 on the pilot valve 3 connects to a ball valve 5, and the other end of the ball valve 5 connects to a quick-connect fitting A16. By connecting the quick-connect fitting A16 to the emergency boom pin device 2, oil is supplied through the emergency device 2 to the emergency oil supply interface of the boom pin drive cylinder. When the quick-connect fitting B227 in the emergency device 2 is connected to the emergency oil supply interface A27, the boom pin can be removed and released by adjusting the pilot valve 3 and the ball valve 5. Similarly, when the quick-connect fitting B227 is connected to the emergency oil supply interface A38, the boom pin can be removed and released. Emergency oil supply interfaces can be provided on other existing valve assemblies of the crane.

[0022] This invention addresses the failure of the original boom pin control system by utilizing an emergency tooling and the crane's existing pilot valve to control the boom pin, achieving emergency control. Compared to existing technologies, it provides a practical emergency device that is simple to operate, precise in control, and convenient and effective. The pilot valve's MY port is pre-installed with a ball valve and a quick-connect interface; the boom pin can be inserted or removed by controlling the ball valve's opening and closing and the pilot valve's operation. The use of a telescopic rod and quick-connect coupling allows for oil supply to the telescopic cylinder at any position.

[0023] This invention utilizes the existing pilot valve of the crane to supply oil, increasing the convenience of maintenance; by using emergency tooling, the oil is transferred to the drive cylinder, reducing the danger of maintenance; and by reserving an emergency oil source interface on the telescopic cylinder, the control of the cylinder arm pin is achieved through an external oil source, reducing the risk of crane operation.

Claims

1. A novel cylinder arm pin emergency device, characterized by: The device includes an emergency device (2), which includes an emergency quick-connect fitting one (21), an emergency quick-connect fitting two (22), an EW connector (23), an emergency hose (24), a quick-connect fitting B1 (25), a telescopic rod (26), a quick-connect fitting B2 (27), and a dust plug (28). The emergency quick-connect fitting one (21) and the emergency quick-connect fitting two (22) are connected together through a round hole. The emergency quick-connect fitting one (21) has two oil ports, one of which is connected to the emergency hose (24) through the EW connector (23), and the other oil port is connected to the quick-connect fitting B2 (27). One end of the emergency quick-connect fitting two (22) is a round hole for connecting with the emergency quick-connect fitting one (21), and the other end is an external thread for connecting with the telescopic rod (26).

2. The novel cylinder arm pin emergency device according to claim 1, characterized in that: The emergency hose (24) is equipped with a quick-connect fitting B1 (25).

3. The novel cylinder arm pin emergency device of claim 1, wherein: The quick-connector B2 (27) is provided with a dust plug (28).

4. The novel cylinder arm pin emergency device of claim 1, wherein: The external thread of the emergency quick-connect tool two (22) is an M8 external thread (29).

5. The novel cylinder arm pin emergency device according to any one of claims 1-4, characterized in that: The emergency device (2) is connected to quick-connect connector A1 (6), quick-connect connector B2 (27) is connected to emergency oil source interface A2 (7) or connected to emergency oil source interface A3 (8).

6. The novel cylinder arm pin emergency device according to claim 5, characterized in that: The emergency oil source interface A2 (7) and the emergency oil source interface A3 (8) are located at both ends of the lower slide block of the rear cylinder head of the telescopic cylinder (1).

7. The novel cylinder arm pin emergency device according to claim 5, characterized in that: The quick-connect connector A1 (6) is connected to one end of the ball valve (5), and the other end of the ball valve (5) is connected to the pilot valve reserved port (4) of the pilot valve (3).

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