Rapid traction connecting device for construction machinery

Abstract

The utility model belongs to the technical field of building machinery, and particularly relates to a rapid traction connecting device for building machinery, which comprises a traction pin, the traction pin is arranged on a connecting and locking assembly, the connecting and locking assembly comprises a conical connecting shell, and four groups of sliding assemblies are arranged on the inner wall of the conical connecting shell. Each sliding assembly is provided with a sliding locking block, the traction pin is fixed through the four sliding locking blocks, one side of each sliding locking block is provided with an elastic assembly, the four sliding assemblies comprise inclined sliding grooves formed in the inner wall of the conical connecting shell, fixing shafts are arranged in the inclined sliding grooves, and the sliding locking blocks are arranged on the fixing shafts in a sliding mode. The device not only can realize quick connection, but also has the effects of being not easy to fall off and self-adaptive to buffer.

Description

Technical Field

[0001] This utility model belongs to the field of construction machinery technology, and specifically relates to a quick traction connection device for construction machinery. Background Technology

[0002] In the construction machinery industry, rapid connection and reliable traction between equipment are crucial for ensuring construction efficiency and safety. For example, the connection between excavators, loaders, and other construction machinery and trailers / flatbeds, or the connection between components of multi-section boom equipment, all require efficient and stable traction connection devices. Traditional traction connection methods mainly use pin-type or bolt-fixed structures, which have significant drawbacks:

[0003] Pin-type connections require manual alignment of the pin hole and insertion of the pin, followed by fixing with a cotter pin or locking ring. The operation is cumbersome and takes a long time to complete each connection. Bolt-type connections require multiple tightening of the nut, which requires high operator skills and is prone to connection failure due to thread wear, making it difficult to meet the needs of frequent disassembly and assembly operations of construction machinery.

[0004] Traditional connection devices are prone to loosening or falling off under complex working conditions (such as bumpy roads, heavy traction, and impact loads). For example, pin-type connections may cause the pin to slip out due to vibration, while bolt-type connections may cause safety accidents due to fatigue fracture or loosening of nuts. Especially in construction, sudden disengagement during equipment traction can lead to serious consequences such as equipment damage and personal injury.

[0005] Construction machinery generates significant instantaneous tensile forces during startup, braking, or turning, and existing connection devices often lack effective buffering structures. Rigid connections are prone to localized stress concentration in the connecting parts, shortening component lifespan and even causing structural deformation or fracture. For example, the impact load on the connection point between a trailer and construction machinery during sudden braking may cause plastic deformation of the towing pin or connecting hole, affecting the accuracy of subsequent connections.

[0006] To address this, we propose a rapid traction connection device for construction machinery. This device not only enables rapid connection but also provides resistance to detachment and adaptive buffering. Utility Model Content

[0007] The purpose of this invention is to provide a quick traction connection device for construction machinery. This device not only enables quick connection, but also has the effects of being less prone to detachment and having self-adaptive buffering.

[0008] The specific technical solution adopted by this utility model is as follows:

[0009] A quick-traction connection device for construction machinery includes a traction pin, which is disposed on a connecting locking assembly;

[0010] The connecting locking assembly includes a conical connecting housing, on the inner wall of which four sets of sliding components are provided. Each set of sliding components is provided with a sliding locking block. The four sliding locking blocks fix the traction pin, and each sliding locking block is provided with an elastic component on one side.

[0011] Furthermore, the four sliding components include inclined grooves formed on the inner wall of the conical connecting housing, with a fixed shaft inside the inclined grooves and the sliding locking block slidably disposed on the fixed shaft.

[0012] Furthermore, the inclined groove matches the sliding locking block.

[0013] Furthermore, an anti-slip surface is provided on one side of the sliding locking block.

[0014] Furthermore, the elastic component includes a hollow housing disposed on one side of the sliding locking block, a spring disposed inside the hollow housing, a piston disc disposed on one side of the spring, a moving rod disposed on the piston disc, and the end of the moving rod away from the piston disc passing through the hollow housing and having a contact plate installed thereon that contacts the traction pin.

[0015] Furthermore, the contact plate is provided with anti-slip protrusions.

[0016] Furthermore, an arc-shaped plate is provided on one side of the conical connecting housing.

[0017] The technical effects achieved by this utility model are as follows:

[0018] 1. The sliding component drives the sliding locking block on it to move along the inner wall of the conical connecting housing towards the large or small diameter end of the housing, so as to realize the entry and locking of the traction pin, thereby making a quick connection without falling off. At the same time, the elastic component can reduce the initial tension generated by traction, preventing the entire device from being damaged due to excessive pressure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the present invention;

[0021] Figure 3 This is an exploded view of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the elastic component of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Traction pin; 2. Conical connecting housing; 3. Sliding locking block; 4. Inclined slide groove; 5. Fixed shaft; 6. Hollow housing; 7. Spring; 8. Piston disc; 9. Moving rod; 10. Contact plate; 11. Arc plate. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figures 1-4 As shown, a quick traction connection device for construction machinery includes a traction pin 1, which is disposed on a connecting locking assembly.

[0027] The connecting locking assembly includes a conical connecting housing 2. Four sets of sliding components are provided on the inner wall of the conical connecting housing 2. Each set of sliding components is provided with a sliding locking block 3. The four sliding locking blocks 3 fix the traction pin 1, and each sliding locking block 3 is provided with an elastic component on one side.

[0028] Among them, the four sliding components include an inclined slide groove 4 opened on the inner wall of the conical connecting housing 2, a fixed shaft 5 is provided inside the inclined slide groove 4, and a sliding locking block 3 is slidably arranged on the fixed shaft 5, so that the sliding locking block 3 can move inside the inclined slide groove 4, and tighten or open the sliding locking block 3.

[0029] The inclined slide 4 is matched with the sliding locking block 3, that is, the sliding locking block 3 can slide smoothly inside the inclined slide 4 without jamming.

[0030] Meanwhile, an anti-slip surface is provided on one side of the sliding locking block 3. The anti-slip surface can increase the friction and improve the fixing effect. This anti-slip surface abuts against the traction pin 1, which improves the fixing effect.

[0031] like Figure 4 As shown, the elastic component includes a hollow housing 6 disposed on one side of the sliding locking block 3, a spring 7 disposed inside the hollow housing 6, a piston disc 8 disposed on one side of the spring 7, a moving rod 9 disposed on the piston disc 8, and the end of the moving rod 9 away from the piston disc 8 passing through the hollow housing 6 and having a contact plate 10 that contacts the traction pin 1 installed thereon.

[0032] When pressure is generated, the traction pin 1 applies pressure to the contact plate 10, and the contact plate 10 drives the moving rod 9 to squeeze the piston disc 8 and spring 7, thereby reducing the initial tension and preventing the entire device from being damaged due to excessive pressure.

[0033] The contact plate 10 is provided with anti-slip protrusions, which increase friction and improve the fixing effect.

[0034] An arc-shaped plate 11 is provided on one side of the conical connecting housing 2, and the side of the arc-shaped plate 11 away from the conical connecting housing 2 is hinged to the object being pulled.

[0035] This configuration allows the conical connecting housing 2 to rotate the arc plate 11 upwards, causing the sliding locking block 3 to slide inside the inclined groove 4, allowing the traction pin 1 to enter. This causes the conical connecting housing 2 to rotate the arc plate 11 downwards, causing the sliding locking block 3 to slide inside the inclined groove 4, so that one side of the traction pin 1 abuts against one side of the sliding locking block 3 for limiting, thereby enabling rapid connection.

[0036] It should be noted that: to achieve fully automatic locking, a telescopic component (such as an electric telescopic rod) can be installed on the sliding locking block 3. The electric telescopic rod drives the sliding locking block 3 to move inside the inclined slide groove 4, so as to realize the entry and locking of the traction pin 1.

[0037] The components used in this invention are all made of high-strength materials (such as steel), and are not easily damaged.

[0038] The working principle of this utility model is as follows: the operator drives the sliding component in a certain way (manual lever, hydraulic cylinder, pneumatic cylinder, etc., depending on the design). The sliding component drives the sliding locking block 3 on it to move along the inner wall of the conical connecting housing 2 towards the large diameter end of the housing. Since the inner wall of the conical connecting housing 2 is conical (small diameter at the small end and large diameter at the large end), when the locking blocks move towards the large end, they are forced to move outward radially (because the slope of the conical surface forces them to "climb" outward). The four locking blocks move outward at the same time, which causes the diameter of the through hole they form at the small diameter end of the conical connecting housing 2 to become larger. The opening becomes large enough to allow the towing pin 1 to easily enter. Align the towing pin 1 on the equipment to be connected (such as a trailer) and insert it into the opening at the small diameter end of the conical connecting housing 2. The towing pin 1 passes through the channel formed by the four opened locking blocks until it is fully in place (usually reaching the end of the locking block's stroke or the designed position). The operator reverses the drive of the sliding assembly, which drives the sliding locking block 3 on it to move along the inner wall of the conical connecting housing 2 toward the small diameter end of the housing. Due to the taper of the inner wall of the conical connecting housing 2, when the locking blocks move toward the small end, they are forced to move radially inward ("squeezed" inward by the conical slope). The four locking blocks tighten inward synchronously, thereby limiting the position of one side of the towing pin 1 against the side of the sliding locking block 3, thus enabling a quick connection without the possibility of detachment. At the same time, the elastic component can reduce the initial tension generated by the traction, preventing the entire device from being damaged by excessive pressure.

[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A quick-traction connection device for construction machinery, comprising a traction pin (1), wherein the traction pin (1) is disposed on a connecting locking assembly; characterized in that The connecting locking assembly includes a conical connecting housing (2), and four sets of sliding components are provided on the inner wall of the conical connecting housing (2). Each set of sliding components is provided with a sliding locking block (3). The four sliding locking blocks (3) fix the traction pin (1), and each sliding locking block (3) is provided with an elastic component on one side.

2. The quick traction connection device for construction machinery according to claim 1, characterized in that: The four sliding components include an inclined slide groove (4) formed on the inner wall of the conical connecting housing (2), a fixed shaft (5) is provided inside the inclined slide groove (4), and the sliding locking block (3) is slidably disposed on the fixed shaft (5).

3. The quick traction connection device for construction machinery according to claim 2, characterized in that: The inclined groove (4) is matched with the sliding locking block (3).

4. The quick traction connection device for construction machinery according to claim 1, characterized in that: The sliding locking block (3) has an anti-slip surface on one side.

5. A quick traction connection device for construction machinery according to claim 1, characterized in that: The elastic component includes a hollow housing (6) disposed on one side of the sliding locking block (3), a spring (7) disposed inside the hollow housing (6), a piston disc (8) disposed on one side of the spring (7), a moving rod (9) disposed on the piston disc (8), and a contact plate (10) that contacts the traction pin (1) is installed at one end of the moving rod (9) away from the piston disc (8).

6. A quick traction connection device for construction machinery according to claim 5, characterized in that: The contact plate (10) is provided with anti-slip protrusions.

7. A quick traction connection device for construction machinery according to claim 1, characterized in that: An arc-shaped plate (11) is provided on one side of the conical connecting shell (2).

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