Spacer bush positioning device

Abstract

The utility model discloses a spacer bush positioning device which comprises a semicircular hole spacer bush, and the semicircular hole spacer bush and a pin shaft form a positioning combined structure of a semicircular hole and a long shaft. The spacer bush with the semicircular hole structure is adopted to replace a circular hole spacer bush in the prior art, and the spacer bush and the pin shaft are combined in a novel positioning mode of the semicircular hole and the long shaft, so that the degree of freedom of the pin shaft in the height direction is released, the difficulty in penetrating and taking the pin shaft is avoided, and the shaft penetrating and taking efficiency of a special-shaped truss arm assembly process is improved.

Description

Technical Field

[0001] This utility model relates to the field of cranes, and in particular to a spacer positioning device. Background Technology

[0002] Truss components are a major part of cranes, with irregular truss booms being particularly complex in structure and difficult to install and position during assembly. Existing technology for assembling irregular truss booms employs a control mode of a fixed three-dimensional flexible universal platform + support structure + positioning structure + spacer + bushing + pin. According to the requirements for assembling irregular sections, the support structure is installed on the three-dimensional flexible universal platform, followed by the installation of the joint positioning structure. Finally, during assembly, the bushings and spacers are installed and the pins are inserted, thus completing the assembly process for the irregular truss boom. The spacers utilize a circular hole structure.

[0003] However, the existing technology uses a round hole + long shaft positioning mode for the spacer and pin combination, which can easily lead to difficulties in inserting and removing the pin during the assembly of irregular truss arm components. The spacer with a round hole has low replacement and adjustment efficiency. Due to the limitations of the spacer structure, it cannot be directly removed between the positioning structure and the workpiece. Instead, the spacer must be removed after the shaft is withdrawn, resulting in low overall efficiency.

[0004] Therefore, it is necessary to develop new spacer positioning devices to overcome the above problems. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the prior art, this utility model provides a spacer positioning device, which adopts a spacer with a semi-circular hole structure to replace the circular hole spacer of the prior art. The spacer and the pin are combined in a new semi-circular hole + long shaft positioning mode, which realizes the freedom of the pin in the height direction, and does not cause difficulties in inserting and removing the pin, thereby improving the efficiency of inserting and removing the pin in the assembly process of irregular truss arm.

[0006] Technical solution: The present invention provides a spacer positioning device, characterized in that it includes a semi-circular hole spacer, and the semi-circular hole spacer and the pin form a positioning combination structure of semi-circular hole + long shaft.

[0007] The semi-circular hole spacer is located above the pin and is sleeved on the pin.

[0008] The pin shaft is connected to the backing rock at both ends through a positioning structure.

[0009] The pin has bushings at both ends.

[0010] The aforementioned support is located on a fixed three-dimensional flexible universal platform.

[0011] The fixed three-dimensional flexible universal platform is located on the irregular truss arm.

[0012] The irregularly shaped truss arm is located on a crane.

[0013] Beneficial Effects: Compared with the prior art, this utility model has the following significant advantages: This utility model uses a semi-circular hole structure spacer instead of the existing circular hole spacer. The spacer and pin assembly adopt a novel semi-circular hole + long shaft positioning mode, which realizes the freedom of the pin in the height direction, avoids difficulties in inserting and removing the pin, and improves the efficiency of inserting and removing the pin in the assembly process of the irregular truss arm. At the same time, it improves the efficiency of changing and debugging the process equipment for the irregular truss arm. Attached Figure Description

[0014] Figure 1 A structural schematic diagram of an existing irregular truss arm assembly box;

[0015] Figure 2 This is a schematic diagram of the structure of a circular hole spacer in the prior art;

[0016] Figure 3 This is a structural schematic diagram of the irregular truss arm assembly box of this utility model;

[0017] Figure 4 This is a schematic diagram of the semi-circular hole spacer of this utility model;

[0018] In the diagram, 1 is a fixed three-dimensional flexible universal platform; 2 is a support; 3 is a positioning structure; 4 is a bushing; 5 is a pin; 6 is a round hole spacer; and 7 is a semi-circular hole spacer. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] The spacer positioning device of this utility model includes a semi-circular hole spacer 7, which, together with a pin 5, forms a positioning combination structure of a semi-circular hole and a long shaft. The semi-circular hole spacer 7 is located above the pin 5 and is fitted onto the pin 5. Both ends of the pin 5 are connected to a support 2 via a positioning structure 3. Bushings 4 are provided at both ends of the pin 5. The support 2 is located on a fixed three-dimensional flexible universal platform 1. The fixed three-dimensional flexible universal platform 1 is located on an irregularly shaped truss arm. The irregularly shaped truss arm is located on a crane.

[0021] In use, the irregular truss arm assembly adopts a control mode of fixed three-dimensional flexible universal platform 1 + support 2 + positioning structure 3 + semi-circular hole spacer 7 + bushing 4 + pin 5. According to the requirements of irregular section assembly, the support is installed on the three-dimensional flexible universal platform, then the joint positioning structure is installed, and finally the bushing 4 and semi-circular hole spacer 7 are installed and the pin is inserted during the assembly process, thereby realizing the assembly of the irregular section truss arm assembly process.

[0022] Compared with the prior art, the present invention uses a semi-circular hole spacer 7 instead of the circular hole spacer 6 of the prior art.

[0023] The combination of the semi-circular hole spacer 7 and the pin 5 in this utility model adopts an innovative positioning mode of semi-circular hole + long shaft, which realizes the freedom of the pin in the height direction, avoids difficulties in inserting and removing the pin, and improves the efficiency of inserting and removing the pin in the assembly process of irregular truss arm. The semi-circular hole spacer 7 is located above the pin 5. The semi-circular hole spacer 7 is relatively light and can be directly removed upwards, improving the efficiency of process equipment change and debugging in the assembly process of irregular sections.

Claims

1. A spacer positioning device, characterized in that: It includes a semi-circular hole spacer (7), which and the pin (5) form a positioning combination structure of semi-circular hole + long shaft; the semi-circular hole spacer (7) is located above the pin (5) and is sleeved on the pin (5).

2. The spacer positioning device according to claim 1, characterized in that: The pin (5) is connected to the backing (2) at both ends through the positioning structure (3).

3. The spacer positioning device according to claim 2, characterized in that: The pin (5) is provided with bushings (4) at both ends.

4. The spacer positioning device according to claim 3, characterized in that: The aforementioned support (2) is located on a fixed three-dimensional flexible universal platform (1).

5. The spacer positioning device according to claim 4, characterized in that: The fixed three-dimensional flexible universal platform (1) is located on the irregular truss arm.

6. The spacer positioning device according to claim 5, characterized in that: The aforementioned irregular truss arm is located on the crane.

Images