Automatic positioning and detecting device for brake shoe of tower crane

Abstract

The utility model relates to a tower crane brake shoe automatic just-in-place and detection device, relates to tower crane technical field for solving the problem that the top -up set frame falls off because of human error, illegal operation when manually operating top -up plus or minus standard section, including brake shoe, brake shoe oil cylinder, brake shoe push rod and just-in-place detection component, the first end of brake shoe and brake shoe oil cylinder cylinder are all with the set frame hinge connection of tower crane, the hydraulic rod of brake shoe oil cylinder is hinged connection with the first end of brake shoe push rod, the second end of brake shoe push rod is hinged connection with the second end of brake shoe, just-in-place detection component is located on the set frame for detecting the position of brake shoe, the utility model discloses the automatic just-in-place of brake shoe is realized through the joint action of brake shoe oil cylinder and brake shoe push rod, and whether brake shoe has just-in-place is detected through just-in-place detection component, after brake shoe just-in-place, the set frame is hung on tower machine standard section, prevents the falling of set frame in the top -up process.

Description

Technical Field

[0001] This utility model relates to the field of tower crane technology, specifically to an automatic positioning and detection device for tower crane brake shoes. Background Technology

[0002] Tower cranes primarily rely on manual operation when adding or removing standard sections. Operators manually control the hydraulic system of the lifting mechanism to raise the lifting frame, observing and judging its tilt, and manually manipulating the lifting beam, climbing claws, and safety pins to complete the process. However, operators often rely on experience, leading to errors and violations during the lifting process, which can cause the lifting frame to detach and ultimately result in a catastrophic accident. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic positioning and detection device for the brake shoe of a tower crane, which solves the problem of the lifting frame falling off due to human error or violation of regulations when manually operating the lifting and adding / removing of standard sections.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an automatic positioning and detection device for the brake shoe of a tower crane, including a brake shoe, a brake shoe cylinder, a brake shoe push rod, and a positioning detection component. The first end of the brake shoe and the cylinder of the brake shoe cylinder are both hinged to the frame of the tower crane. The hydraulic rod of the brake shoe cylinder is hinged to the first end of the brake shoe push rod, and the second end of the brake shoe push rod is hinged to the second end of the brake shoe. The positioning detection component is located on the frame and is used to detect the position of the brake shoe.

[0005] Furthermore, the brake shoes are two in number and located on both sides of the sleeve.

[0006] Furthermore, the brake shoe has a pawl for hooking onto the standard section lug on the standard section.

[0007] Furthermore, the brake shoe push rod comprises two sections arranged at a right angle or an obtuse angle.

[0008] Furthermore, a reinforcing rib is provided at the included angle of the brake shoe push rod.

[0009] Furthermore, the brake shoe has an L-shaped structure, and the upper part of the brake shoe has a brake shoe lug plate, which is hinged to the top of the sleeve frame; when the hydraulic rod of the brake shoe cylinder is fully retracted, the upper part of the brake shoe is in a vertical state and the lower part is in a horizontal state, at which time the brake shoe partially surrounds the sleeve frame.

[0010] The beneficial effects of this utility model are: this utility model achieves automatic positioning of the brake shoe through the combined action of the brake shoe cylinder and the brake shoe push rod, and detects whether the brake shoe has been positioned through the positioning detection component; after the brake shoe is positioned, the sleeve is suspended on the standard section of the tower crane to prevent the sleeve from falling off during the jacking process. Attached Figure Description

[0011] Figure 1 This is a side view of the present invention in its working state; Figure 2 This is a side view of the present invention in its non-working state; In the diagram: 1. Brake shoe, 2. Brake shoe cylinder, 3. Standard section, 4. Standard section lug, 5. Brake shoe push rod, 6. Brake bracket. Detailed Implementation

[0012] like Figure 1 and Figure 2 As shown in the figure, this utility model includes a brake shoe 1, a brake shoe cylinder 2, a brake shoe push rod 5, and a positioning detection component. The structure and working principle of this utility model will be described in detail below with reference to the accompanying drawings.

[0013] like Figure 1 , Figure 2 As shown, the brake shoe 1 has an L-shaped structure, comprising two vertically arranged sections. The first end of the brake shoe 1, i.e., the upper end of the brake shoe 1, has a brake shoe lug plate, which is connected to the top hinge of the tower crane's frame 6 via a pin. The brake shoe cylinder 2 connects and debugs a high-precision hydraulic pump, hydraulic cylinder, and control valve according to design requirements to ensure the sealing and pressure control accuracy of the hydraulic system. The cylinder barrel of the brake shoe cylinder 2 is hinged to the lower end of the frame 6, and the hydraulic rod of the brake shoe cylinder 2 is connected to the first end of the brake shoe push rod 5. The second end of the brake shoe push rod 5 is hinged to the second end of the brake shoe 1. More specifically, the hinge point between the brake shoe push rod 5 and the brake shoe 1 is located at the intersection of the two sections of the brake shoe 1. To achieve the hooking of the brake shoe 1 with the standard section 3, a standard section lug plate 4 is provided on the standard section 3, and a climbing claw is provided at the second end of the brake shoe 1. After the climbing claw hooks with the standard section lug plate 4, the frame 6 is hung on the standard section 3. The positioning detection component includes a distance sensor located on the sleeve 6, used to detect the relative position between the brake shoe 1 and the sleeve 6, and thus whether the brake shoe 1 has reached the designated position. The brake shoe push rod 5 has two ends set at a right angle or an obtuse angle. The shape of the brake shoe push rod 5 is conducive to generating a driving force to rotate the brake shoe 1 when the brake shoe cylinder 2 is actuated. When the hydraulic rod of the brake shoe cylinder 2 is fully retracted, the upper part of the brake shoe 1 is in a vertical state and the lower part is in a horizontal state. At this time, the brake shoe 1 partially surrounds the sleeve 6.

[0014] The working principle of this utility model is described below: (1) After the lifting frame 6 is lifted and the standard section 3 is placed, the brake shoe 1 is located on the side above the newly placed standard section 3; (2) Then the brake shoe cylinder 2 pushes the brake shoe push rod 5, and the brake shoe 1 is pushed by the brake shoe push rod 5, so that the brake shoe 1 rotates around the hinge connection, so that the end of the brake shoe 1 gradually approaches the standard section ear plate 4 and hooks onto the standard section ear plate 4; (3) The positioning detection component detects whether the brake shoe is in place. After the brake shoe is in place, the lifting cylinder and the positioning release cylinder work together to move the lifting beam to the side above the standard section ear plate 4 of the new standard section 3; (4) After the lifting beam is fixed, the brake shoe 1 is released by the combined action of the brake shoe cylinder 2 and the brake shoe push rod 5. At this time, the lifting can be carried out again.

[0015] This invention achieves automatic positioning of the brake shoe 1 through the coordinated operation of the brake shoe cylinder 2 and the brake shoe push rod 5. Simultaneously, this invention is equipped with a brake shoe 1 positioning detection component, which can accurately detect whether the brake shoe 1 has reached the designated position, ensuring the safety and reliability of the entire braking process. Once the brake shoe 1 is accurately positioned, the lifting frame 6 can be suspended on the tower crane standard section 3, effectively preventing the lifting frame 6 from falling and providing a solid guarantee for the smooth progress of the entire lifting operation and the safety of construction personnel.

Claims

1. An automatic positioning and detection device for the brake shoe of a tower crane, characterized in that, The system includes a brake shoe, a brake shoe cylinder, a brake shoe push rod, and a positioning detection assembly. The first end of the brake shoe and the cylinder barrel of the brake shoe cylinder are both hinged to the frame of the tower crane. The hydraulic rod of the brake shoe cylinder is hinged to the first end of the brake shoe push rod, and the second end of the brake shoe push rod is hinged to the second end of the brake shoe. The positioning detection assembly is located on the frame and is used to detect the position of the brake shoe.

2. The automatic positioning and detection device for tower crane brake shoes according to claim 1, characterized in that, The brake shoes are two in number and located on both sides of the sleeve.

3. The automatic positioning and detection device for tower crane brake shoes according to claim 2, characterized in that, The brake shoe has a pawl for hooking onto the standard section lug plate on the standard section.

4. The automatic positioning and detection device for tower crane brake shoes according to claim 3, characterized in that, The brake shoe push rod comprises two sections arranged at a right angle or an obtuse angle.

5. The automatic positioning and detection device for tower crane brake shoes according to claim 4, characterized in that, A reinforcing rib is provided at the included angle of the brake shoe push rod.

6. The automatic positioning and detection device for tower crane brake shoes according to claim 5, characterized in that, The brake shoe has an L-shaped structure, and the upper part of the brake shoe has a brake shoe lug plate. The brake shoe lug plate is hinged to the top of the sleeve. When the hydraulic rod of the brake shoe cylinder is fully retracted, the upper part of the brake shoe is in a vertical state and the lower part is in a horizontal state. At this time, the brake shoe partially surrounds the sleeve.

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