High-strength semi-trailer pin seat

Abstract

This utility model provides a high-strength semi-trailer pin seat, belonging to the field of semi-trailer manufacturing technology. It includes a base, connecting holes formed in the base, a connecting assembly bolted to the surface of the base, a slot formed in the side wall of the connecting assembly, a fixing assembly fixedly connected to the inner wall of the connecting assembly, and a locking assembly bolted to the inner wall of the connecting assembly. This utility model provides a stable position for subsequent fixing and installation through the installation holes and through holes. The cooperation between the mounting plate and the connecting plate, as well as the sliding groove and mounting rod, further enhances the flexibility and stability of the structure. The cooperation between the fixing rod and the fixing bolt achieves tight fixing between the various parts. The cooperation between the first spring and the fixing block ensures reliable fixing and protects the pin seat from damage. The cooperation between the connecting block and the second spring further locks and fixes the pin seat.

Description

Technical Field

[0001] This utility model belongs to the field of semi-trailer manufacturing technology, specifically relating to a high-strength semi-trailer pin seat. Background Technology

[0002] As a key load-bearing component, the technological development of semi-trailer pin seats has always revolved around the synergistic improvement of lightweighting and load-bearing strength. Early designs relied heavily on experience and material stacking, making it difficult to balance performance and cost. With the maturity of modern design methods such as finite element analysis and the application of high-performance steel, the pin seat structure has been deeply optimized. Through precise stress distribution design, it has achieved significant improvement in fatigue life and connection reliability while reducing weight. These high-strength pin seats are now widely used in heavy-duty semi-trailers, flatbed semi-trailers, tank semi-trailers, and special transport semi-trailers, providing core protection for the safe and stable operation of modern efficient logistics equipment.

[0003] In existing technologies, traditional semi-trailer pin seat designs often face a dilemma: excessive pursuit of lightweighting can lead to insufficient structural strength, making them prone to fatigue fracture under long-term heavy load conditions; while simply increasing the material thickness can improve load-bearing capacity, it will significantly increase the vehicle's weight, reduce transportation efficiency, and increase energy consumption. Therefore, a high-strength semi-trailer pin seat has emerged. Utility Model Content

[0004] The purpose of this invention is to provide a high-strength semi-trailer pin seat, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-strength semi-trailer pin seat, including The base includes a connection hole formed in the base, a connection component bolted to the surface of the base, a slot formed in the side wall of the connection component, a fixing component fixedly connected to the inner wall of the connection component, and a locking component bolted to the inner wall of the connection component. The connecting assembly includes a connecting plate bolted to the surface of the base, a mounting hole formed in the side wall of the connecting plate, a mounting plate fixedly connected to the bottom end of the connecting plate, a through hole formed in the bottom end of the mounting plate, a sliding groove formed in the bottom end of the connecting plate, and a mounting rod threaded to the side wall of the connecting plate.

[0006] As a preferred embodiment of this utility model, the fixing component includes a fixing rod threadedly connected to the inner wall of the mounting hole, and a fixing bolt threadedly connected to the bottom end of the connecting plate.

[0007] As a preferred embodiment of this utility model, the fixing component further includes a locking block bolted to the bottom end of the connecting plate and a screw fixedly connected to the side wall of the bottom end of the connecting plate.

[0008] As a preferred embodiment of the present invention, the fixing assembly further includes a first spring sleeved on the surface of the screw, and a fixing block fixedly connected to the side wall of the screw.

[0009] As a preferred embodiment of the present invention, the locking assembly includes a connecting block threadedly connected to the side wall of the mounting rod, and a second spring sleeved on the side wall of the mounting rod.

[0010] As a preferred embodiment of the present invention, the locking assembly further includes a connector bolted to the surface of the connecting block, and a fixing plate bolted to the bottom end of the connector.

[0011] As a preferred embodiment of the present invention, the locking assembly further includes a third spring disposed on the side wall of the fixed plate, and a handle fixedly connected to the side wall of the fixed plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the connecting plate ensures that the bolts are firmly connected to the base surface; the mounting holes and through holes provide a stable position for subsequent fixing and installation; the cooperation between the mounting plate and the connecting plate, as well as the sliding groove and the mounting rod, further enhance the flexibility and stability of the structure; the cooperation between the fixing rod and the fixing bolt achieves tight fixing between the various parts; the cooperation between the first spring and the fixing block not only increases the reliability of the fixing, but also buffers and disperses external forces to a certain extent, protecting the pin seat from damage; and the cooperation between the connecting block and the second spring achieves further locking and fixing of the pin seat. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection component of this utility model; Figure 3 This is a schematic diagram of the fixing component of this utility model; Figure 4 This is a schematic diagram of the locking component of this utility model.

[0014] In the diagram: 101, base; 102, connecting hole; 103, connecting assembly; 103a, connecting plate; 103b, mounting hole; 103c, mounting plate; 103d, through hole; 103e, sliding groove; 103f, mounting rod; 104, slot; 105, fixing assembly; 105a, fixing rod; 105b, fixing bolt; 105c, locking block; 105d, screw; 105e, first spring; 105f, fixing block; 106, locking assembly; 106a, connecting block; 106b, second spring; 106c, connector; 106d, fixing plate; 106e, third spring; 106f, handle. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0018] Example Reference Figures 1-4 This is an embodiment of the present utility model, which provides a high-strength semi-trailer pin seat, comprising: The base 101 includes a connection hole 102 formed in the base 101, a connection component 103 bolted to the surface of the base 101, a slot 104 formed in the side wall of the connection component 103, a fixing component 105 fixedly connected to the inner wall of the connection component 103, and a locking component 106 bolted to the inner wall of the connection component 103.

[0019] Specifically, the connecting assembly 103 includes a connecting plate 103a bolted to the surface of the base 101, a mounting hole 103b formed on the side wall of the connecting plate 103a, a mounting plate 103c fixedly connected to the bottom of the connecting plate 103a, a through hole 103d formed on the bottom of the mounting plate 103c, a groove 103e formed on the bottom of the connecting plate 103a, and a mounting rod 103f threaded to the side wall of the connecting plate 103a.

[0020] First, the pin seat is fixed to the designated position on the semi-trailer frame with bolts through the connecting hole 102 to complete the basic load-bearing installation. The semi-trailer traction pin is passed through the through hole 103d of the mounting plate 103c, so that the pin is initially engaged with the slot 104 of the connecting plate 103a. The rotating block 105c is fixed with bolts, so that the block 105c and the slot 104 form a circumferential limit to prevent the pin from rotating circumferentially.

[0021] Furthermore, the fixing component 105 includes a fixing rod 105a threaded to the inner wall of the mounting hole 103b, and a fixing bolt 105b threaded to the bottom end of the connecting plate 103a. The fixing component 105 also includes a locking block 105c bolted to the bottom end of the connecting plate 103a, a screw 105d fixedly connected to the side wall of the bottom end of the connecting plate 103a, and a first spring 105e sleeved on the surface of the screw 105d, and a fixing block 105f fixedly connected to the side wall of the screw 105d.

[0022] The rotating fixing rod 105a moves radially inward along the mounting hole 103b until its inner end tightly abuts against the outer wall of the pin, achieving radial rigid positioning of the pin. At the same time, the first spring 105e on the surface of the screw 105d pushes the fixing block 105f to clamp towards the pin, thereby enhancing the radial fixing strength. This adjusts the position of the locking assembly 106 in the slide groove 103e, so that it fits against the outer wall of the pin. Then, the fixing bolt 105b is tightened to lock the sliding position of the locking assembly 106, completing the multi-directional fixing.

[0023] Preferably, the locking assembly 106 includes a connecting block 106a threadedly connected to the side wall of the mounting rod 103f, and a second spring 106b sleeved on the side wall of the mounting rod 103f.

[0024] The rotating mounting rod 103f adjusts its extension length, and the mounting rod 103f drives the connecting block 106a to move along the mounting rod 103f, compressing the second spring 106b to generate axial elastic preload, which is transmitted to the fixing plate 106d through the connecting piece 106c, so that the third spring 106e on the side wall of the fixing plate 106d tightly abuts against the outer wall of the pin, forming a bidirectional elastic clamping.

[0025] It should be noted that the locking assembly 106 also includes a connector 106c bolted to the surface of the connecting block 106a, and a fixing plate 106d bolted to the bottom of the connector 106c. The locking assembly 106 also includes a third spring 106e disposed on the side wall of the fixing plate 106d, and a handle 106f fixedly connected to the side wall of the fixing plate 106d.

[0026] During the semi-trailer's operation, the second spring 106b and the third spring 106e absorb the impact and vibration caused by road bumps, preventing wear on components due to rigid connections. At the same time, the elastic preload maintains the tightness of the connection, preventing bolts from loosening and ensuring driving safety. When disassembly or adjustment is required, loosen the fixing bolt 105b, pull the handle 106f to move the fixing plate 106d outward, compress the third spring 106e, rotate the mounting rod 103f in the opposite direction to release the preload of the second spring 106b, remove the locking assembly 106, and then loosen the bolts of the fixing rod 105a and the locking block 105c in sequence to pull out the traction pin and complete the disassembly or adjustment.

[0027] In use, first, the pin seat integral bolt is fixed to the designated position on the semi-trailer frame through the connecting hole 102 to complete the basic load-bearing installation. The semi-trailer traction pin is then passed through the through hole 103d of the mounting plate 103c, causing the pin to initially engage with the slot 104 of the connecting plate 103a. The locking block 105c is then rotated and fixed with bolts, creating a circumferential limit between the locking block 105c and the slot 104 to prevent circumferential rotation of the pin. The pin rotates circumferentially, and the mounting rod 103f is rotated to adjust its extension length. The mounting rod 103f drives the connecting block 106a to move along the mounting rod 103f, compressing the second spring 106b to generate an axial elastic preload. This preload is transmitted to the fixing plate 106d through the connecting piece 106c, causing the third spring 106e on the side wall of the fixing plate 106d to tightly abut against the outer wall of the pin, forming a bidirectional elastic clamping. When disassembly or adjustment is required, the fixing bolt 105b is loosened, the handle 106f is pulled to move the fixing plate 106d outward, compressing the third spring 106e. The mounting rod 103f is rotated in the opposite direction to release the preload of the second spring 106b. The locking assembly 106 is removed, and then the bolts of the fixing rod 105a and the locking block 105c are loosened in sequence to pull out the traction pin, completing the disassembly or adjustment.

[0028] In summary, the connecting plate 103a securely connects the bolts to the surface of the base 101. The mounting holes 103b and through holes 103d provide a stable position for subsequent fixing and installation. The cooperation between the mounting plate 103c and the connecting plate 103a, along with the sliding groove 103e and the mounting rod 103f, further enhances the flexibility and stability of the structure. The cooperation between the fixing rod 105a and the fixing bolt 105b achieves tight fixing between the various parts. The cooperation between the first spring 105e and the fixing block 105f not only increases the reliability of the fixing but also buffers and disperses external forces to a certain extent, protecting the pin seat from damage. The cooperation between the connecting block 106a and the second spring 106b further locks and fixes the pin seat.

[0029] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0030] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0031] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-strength semi-trailer pin seat, characterized in that: include, The base (101) includes a connection hole (102) formed in the base (101), a connection component (103) bolted to the surface of the base (101), a slot (104) formed in the side wall of the connection component (103), a fixing component (105) fixedly connected to the inner wall of the connection component (103), and a locking component (106) bolted to the inner wall of the connection component (103). The connecting assembly (103) includes a connecting plate (103a) bolted to the surface of the base (101), a mounting hole (103b) formed on the side wall of the connecting plate (103a), a mounting plate (103c) fixedly connected to the bottom end of the connecting plate (103a), a through hole (103d) formed on the bottom end of the mounting plate (103c), a groove (103e) formed on the bottom end of the connecting plate (103a), and a mounting rod (103f) threaded to the side wall of the connecting plate (103a).

2. The high-strength semi-trailer pin seat according to claim 1, characterized in that: The fixing component (105) includes a fixing rod (105a) threaded to the inner wall of the mounting hole (103b) and a fixing bolt (105b) threaded to the bottom end of the connecting plate (103a).

3. A high-strength semi-trailer pin seat according to claim 2, characterized in that: The fixing component (105) further includes a locking block (105c) bolted to the bottom end of the connecting plate (103a) and a screw (105d) fixedly connected to the side wall of the bottom end of the connecting plate (103a).

4. A high-strength semi-trailer pin seat according to claim 3, characterized in that: The fixing assembly (105) also includes a first spring (105e) sleeved on the surface of the screw (105d) and a fixing block (105f) fixedly connected to the side wall of the screw (105d).

5. A high-strength semi-trailer pin seat according to claim 4, characterized in that: The locking assembly (106) includes a connecting block (106a) threaded to the side wall of the mounting rod (103f) and a second spring (106b) sleeved on the side wall of the mounting rod (103f).

6. A high-strength semi-trailer pin seat according to claim 5, characterized in that: The locking assembly (106) further includes a connector (106c) bolted to the surface of the connecting block (106a) and a fixing plate (106d) bolted to the bottom of the connector (106c).

7. A high-strength semi-trailer pin seat according to claim 6, characterized in that: The locking assembly (106) also includes a third spring (106e) disposed on the side wall of the fixed plate (106d) and a handle (106f) fixedly connected to the side wall of the fixed plate (106d).

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