A semi-trailer pin seat for easy installation

Abstract

The utility model provides a convenient installation's semitrailer pin seat belongs to pin seat technical field, including support subassembly, including main shaft, fixedly connected in the fixed plate of main shaft end part, through bolt connection in the main frame of fixed plate side wall and fixedly connected in the side wall of auxiliary frame of main frame, including fixedly connected in the shaft sleeve of main frame side wall, slidingly inserted in the connecting shaft of shaft sleeve center, fixedly installed in the sleeve of connecting shaft middle part, the utility model has the advantages that: through support subassembly and connecting assembly cooperation uses, adopts double fixed structure, effectively disperses load, avoids partial stress deformation, ensures the stability in the process of force transmission, prevents part deviation, promotes the overall bearing capacity and anti vibration performance of pin seat, guarantees semitrailer driving safety, avoids rigid collision between connecting parts, bidirectional limiting structure can prevent part excessive movement, prolongs the service life of pin seat and related parts.

Description

Technical Field

[0001] This utility model belongs to the field of pin seat technology, specifically relating to a semi-trailer pin seat that is easy to install. Background Technology

[0002] Semi-trailer pins, as the core load-bearing components connecting the tractor and trailer, are widely used in logistics transportation, engineering construction, and other fields. Their assembly precision, load-bearing stability, and reliability directly affect road transport safety and efficiency. With the development of modern logistics towards large-scale and efficient operations, the load-bearing requirements of semi-trailers are constantly increasing, and road conditions are becoming increasingly complex, placing higher demands on the overall performance of the pins.

[0003] The installation process of traditional semi-trailer pin seats is cumbersome. The positioning of the main frame and the load-bearing structure relies on manual calibration, which is not only time-consuming and labor-intensive, but also prone to insufficient assembly accuracy due to positioning deviation, affecting the stability of subsequent use. Some equipment adopts an integrated welded structure, which is difficult to disassemble and maintain, and has poor flexibility to adapt to on-site installation needs. Utility Model Content

[0004] The purpose of this utility model is to provide a semi-trailer pin seat that is easy to install, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A convenient semi-trailer pin holder, comprising: The support assembly includes a main shaft, a fixing plate fixedly connected to the end of the main shaft, a main frame body connected to the side wall of the fixing plate by bolts, and a sub-frame body fixedly connected to the side wall of the main frame body. The connecting assembly includes a bushing fixedly connected to the side wall of the main frame, a connecting shaft slidably inserted into the center of the bushing, a sleeve fixedly installed in the middle of the connecting shaft, a guide plate fixedly connected to the side wall of the sleeve, and a guide shaft threadedly connected to the end of the connecting shaft. The end of the guide shaft is inserted into the side wall of the sub-frame, and the guide plate is slidably connected to the inside of the main frame.

[0006] In a preferred embodiment of this utility model, the sleeve sidewall is threadedly connected to a limiting plate, and the limiting plate sidewall is bolted to the guide plate sidewall.

[0007] As a preferred embodiment of this utility model, a support plate is fixedly connected to the inner wall of the main frame, and the support plate is inserted into the inner side of the limiting groove on the side wall of the guide plate.

[0008] In a preferred embodiment of this utility model, a spring is sleeved in the middle of the guide shaft, one end of the spring is fixedly connected to the side wall of the limiting plate, and the other end of the spring is fixedly connected to the side wall of the sub-frame.

[0009] As a preferred embodiment of this utility model, the end of the guide shaft is threadedly connected to a limiting nut disposed on the outside of the sub-frame, and the inside of the main frame is threadedly connected to a limiting post that cooperates with the guide plate.

[0010] As a preferred embodiment of this utility model, the side wall of the pallet is threadedly connected with a positioning block, and the end of the positioning block extends to the side wall of the guide plate.

[0011] In a preferred embodiment of this utility model, a pad is fixedly connected inside the main frame, the pad is installed above the fixing plate, and the side wall of the pad is fixedly connected to the middle side wall of the support plate.

[0012] In a preferred embodiment of this utility model, the main frame sidewall is threaded with a positioning pin, the end of the positioning pin is connected to the sidewall of the fixing plate by a nut, and the positioning pin is symmetrically arranged on the sidewall of the main shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by using the support component and the connecting component together, a double fixing structure is adopted to effectively distribute the load, avoid local stress deformation, ensure stability in the force transmission process, prevent component displacement, improve the overall load-bearing capacity and vibration resistance of the pin seat, ensure the driving safety of the semi-trailer, and avoid rigid collisions between connecting components; the bidirectional limiting structure can prevent excessive movement of components, extend the service life of the pin seat and related components, flexibly adapt to positional deviations in the connection process, and adjust the position of components according to actual use needs, adapting to the installation and use requirements under different working conditions, and enhancing the versatility of the equipment. Attached Figure Description

[0014] 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 side view perspective three-dimensional structural diagram of the present invention; Figure 3 This is a side view of the present invention. Figure 4 This is a schematic diagram of the bottom connection structure of this utility model.

[0015] In the diagram: 100, Support assembly; 101, Main shaft; 102, Fixing plate; 103, Main frame; 104, Sub-frame; 105, Pad block; 106, Positioning pin; 200, Connecting assembly; 201, Bushing; 202, Connecting shaft; 203, Sleeve; 204, Guide plate; 205, Guide shaft; 206, Limiting plate; 207, Support plate; 208, Spring; 209, Positioning block. Detailed Implementation

[0016] 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.

[0017] 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.

[0018] 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.

[0019] Example Reference Figure 1-4 This is an embodiment of the present invention, which provides a conveniently installed semi-trailer pin seat, comprising: The support assembly 100 includes a main shaft 101, a fixing plate 102 fixedly connected to the end of the main shaft 101, a main frame 103 bolted to the side wall of the fixing plate 102, and a sub-frame 104 fixedly connected to the side wall of the main frame 103. The connecting assembly 200 includes a bushing 201 fixedly connected to the side wall of the main frame 103, a connecting shaft 202 slidably inserted into the center of the bushing 201, a sleeve 203 fixedly installed in the middle of the connecting shaft 202, a guide plate 204 fixedly connected to the side wall of the sleeve 203, and a guide shaft 205 threadedly connected to the end of the connecting shaft 202. The end of the guide shaft 205 is inserted into the side wall of the sub-frame 104, and the guide plate 204 is slidably connected to the inside of the main frame 103.

[0020] Among them, the main shaft 101 is the core load-bearing component, and its end is fixedly connected to the fixing plate 102 to form a basic load-bearing structure; the main frame 103 is detachably connected to the side wall of the fixing plate 102 by bolts, and the sub-frame 104 is fixed to the side wall of the main frame 103, forming a cooperative support structure; the bushing 201 is fixed to the side wall of the main frame 103, providing a sliding guide foundation for the connecting shaft 202; the connecting shaft 202 is slidably inserted into the center of the bushing 201, with a fixed sleeve 203 in the middle, and the side wall of the sleeve 203 is bolted to the guide plate 204 through the limiting plate 206, and the guide plate 204 is slidably connected to the inside of the main frame 103; the main shaft 101 The main frame 103 directly bears the longitudinal and lateral loads transmitted by the semi-trailer and distributes the load to the main frame 103 through the fixing plate 102. The bolt connection makes the assembly and disassembly of the main frame 103 and the fixing plate 102 more convenient and adaptable to on-site installation requirements. The pad 105 fills the internal gap of the main frame 103 to prevent the fixing plate 102 from deforming under stress, and improves the overall coordination of the support structure through the fixed connection with the support plate 207. The symmetrical design of the positioning pin 106 can accurately position the relative position of the main frame 103 and the fixing plate 102 to prevent assembly misalignment, while enhancing the vibration resistance of the connection between the two and preventing the bolts from loosening. The guide shaft 205, threaded to the end of the connecting shaft 202, is inserted into the side wall of the sub-frame 104 and locked by a limiting nut. The bushing 201 restricts the sliding direction of the connecting shaft 202, ensuring its smooth axial movement and preventing deviation. The sleeve 203 serves as a connecting hub, enabling force transmission between the connecting shaft 202 and the guide plate 204. The limiting plate 206 strengthens the fixing effect of the two by bolt connection and provides an installation reference for the spring 208. The support plate 207, through its cooperation with the limiting groove of the guide plate 204, further constrains the sliding trajectory of the guide plate 204 and improves the adjustment accuracy. The positioning block 209 can adjust its extension length by thread to achieve precise positioning of the guide plate 204 at a specific position. The spring 208 provides elastic buffering during the axial movement of the guide shaft 205, absorbing vibration energy and reducing component wear. The limiting nut limits the maximum extension stroke of the guide shaft 205 to prevent it from disengaging from the sub-frame 104, while the limiting post limits the reverse sliding distance of the guide plate 204, forming bidirectional stroke control.

[0021] Specifically, the side wall of the sleeve 203 is threadedly connected to the limiting plate 206, and the side wall of the limiting plate 206 is bolted to the side wall of the guide plate 204.

[0022] The side wall of the sleeve 203 is bolted to the guide plate 204 via the limiting plate 206, and the guide plate 204 is slidably connected to the inside of the main frame 103. The limiting plate 206 can maintain the stable connection between the guide plate 204 and the sleeve 203 and prevent the guide plate 204 from loosening from the side wall of the sleeve 203.

[0023] Furthermore, a support plate 207 is fixedly connected to the inner wall of the main frame 103, and the support plate 207 is inserted into the inner side of the limiting groove on the side wall of the guide plate 204.

[0024] The positioning block 209, which is threaded to the side wall of the pallet 207, extends to the side wall of the guide plate 204. Under the cooperative connection between the main frame 103 and the sub-frame 104, it can provide certain support and limit the guide plate 204, and keep the guide plate 204 moving smoothly.

[0025] Preferably, a spring 208 is sleeved in the middle of the guide shaft 205. One end of the spring 208 is fixedly connected to the side wall of the limiting plate 206, and the other end of the spring 208 is fixedly connected to the side wall of the sub-frame 104.

[0026] The spring 208, which is sleeved in the middle of the guide shaft 205, is fixed at both ends to the limiting plate 206 and the side wall of the sub-frame 104, respectively. The spring can provide buffer for the guide plate 204 to prevent hard impact when the semi-trailer docks.

[0027] It should be noted that the end of the guide shaft 205 is threaded with a limiting nut located on the outside of the sub-frame 104, and the inside of the main frame 103 is threaded with a limiting post that works in conjunction with the guide plate 204.

[0028] The limiting post with internal thread connection of the main frame 103 works in conjunction with the guide plate 204 to limit the movement range of the guide plate 204 and prevent the guide plate 204 from becoming loose.

[0029] Preferably, a positioning block 209 is threadedly connected to the side wall of the pallet 207, and the end of the positioning block 209 extends to the side wall of the guide plate 204.

[0030] Among them, the support plate 207 fixed to the inner wall of the main frame 103 is inserted into the limiting groove of the side wall of the guide plate 204, and the end of the positioning block 209 threaded to the side wall of the support plate 207 extends to the side wall of the guide plate 204. Specifically, a pad 105 is fixedly connected inside the main frame 103. The pad 105 is installed above the fixing plate 102, and the side wall of the pad 105 is fixedly connected to the middle side wall of the support plate 207.

[0031] The pad 105 fixed inside the main frame 103 is located above the fixing plate 102 and is fixedly connected to the subsequent support plate 207, further strengthening the structural rigidity of the main frame 103.

[0032] Furthermore, the main frame 103 has a threaded connection to the side wall of the positioning pin 106, the end of the positioning pin 106 is connected to the side wall of the fixing plate 102 by a nut, and the positioning pin 106 is symmetrically arranged on the side wall of the main shaft 101.

[0033] The locating pins 106, which are symmetrically arranged on the side wall of the main shaft 101, are threaded to the side wall of the main frame 103, and their ends are locked and fixed to the fixing plate 102 by nuts.

[0034] In use, the basic assembly of the support components is completed first: the fixing plate 102 is fixedly connected to the main shaft 101, and then the main frame 103 is attached to the side wall of the fixing plate 102 and initially fixed with bolts; the positioning pin 106 is inserted and the end nut is tightened to accurately position the relative position of the main frame 103 and the fixing plate 102, and the rigid fixation of the support structure is completed; the sub-frame 104 is positioned synchronously with the main frame 103, and the pad 105 and the support plate 207 form an internal support reinforcement structure. Insert the connecting shaft 202 into the bushing 201, fix the sleeve 203 in the middle of the connecting shaft 202, and bolt the sleeve 203 to the guide plate 204 through the limiting plate 206; align the guide plate 204 with the limiting groove of the support plate 207 and insert it, adjust the positioning block 209 on the support plate 207 so that its end abuts against the side wall of the guide plate 204 to achieve the initial positioning of the guide plate 204; fit the spring 208 on the guide shaft 205, thread the guide shaft 205 to the end of the connecting shaft 202, then insert the end of the guide shaft 205 into the side wall of the sub-frame 104 and tighten the end limiting nut; finally screw in the limiting post inside the main frame 103 and adjust it to correspond to the preset position of the guide plate 204 to complete the bidirectional stroke limitation.

[0035] The end of the connecting shaft 202 furthest from the guide shaft 205 is used to mate with the corresponding component of the semi-trailer. By sliding the connecting shaft 202 along the bushing 201, it adapts to positional deviations during the mating process, achieving fast and precise mating. After mating, if axial loads or vibrations occur during semi-trailer operation, the connecting shaft 202 drives the guide plate 204 to slide along the limiting groove of the pallet 207, while the guide shaft 205 moves synchronously along the side wall of the sub-frame 104. At this time, the spring 208 absorbs vibration energy through expansion and contraction, buffering load impacts and preventing damage to components from rigid collisions. When the guide plate 204 slides to the preset position, it is blocked by the limiting post or positioning block 209, limiting excessive movement; the limiting nut prevents the guide shaft 205 from detaching from the sub-frame 104, ensuring the stability of the connection structure; the cooperation between the pallet 207 and the guide plate 204 always ensures precise sliding direction, preventing misalignment of the connecting components and ensuring the overall load-bearing stability of the pin seat.

[0036] In summary, the support assembly adopts a double-fixing structure. After the main frame and the fixing plate are initially connected by bolts, the symmetrically arranged positioning pins can quickly calibrate their relative positions, avoiding assembly misalignment. Each component can be assembled in stages. The limiting grooves of the guide plate and the support plate, and the threaded adjustment structure of the positioning block, improve installation efficiency and assembly accuracy. The main shaft and the fixing plate constitute the core load-bearing structure. With the cooperation of the pads inside the main frame and the support plate, the load is effectively distributed, avoiding localized stress deformation. The bushing in the connecting assembly guides and constrains the connecting shaft, and the sliding fit between the guide plate and the support plate ensures stability during force transmission, prevents component displacement, improves the overall load-bearing capacity and vibration resistance of the pin seat, and ensures the safety of the semi-trailer. The spring sleeve on the guide shaft forms an elastic buffer mechanism, which can effectively absorb the axial vibration and load impact generated during the operation of the semi-trailer and avoid rigid collisions between connecting components. The bidirectional limiting structure can prevent excessive movement of components, reduce wear, and significantly extend the service life of the pin seat and related components. The sliding design of the connecting shaft along the bushing can flexibly adapt to positional deviations during the connection process, and component docking can be completed without precise alignment; the threaded adjustment function of the positioning block and limit post can adjust the position of the components according to actual use needs, adapt to the installation and use requirements under different working conditions, and enhance the versatility of the equipment.

[0037] 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 rearranged 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.

[0038] 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.

[0039] 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.

[0040] 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 semi-trailer pin seat that is easy to install, characterized in that: include, The support assembly (100) includes a main shaft (101), a fixing plate (102) fixedly connected to the end of the main shaft (101), a main frame (103) bolted to the side wall of the fixing plate (102), and a sub-frame (104) fixedly connected to the side wall of the main frame (103). The connecting assembly (200) includes a bushing (201) fixedly connected to the side wall of the main frame (103), a connecting shaft (202) slidably inserted into the center of the bushing (201), a sleeve (203) fixedly installed in the middle of the connecting shaft (202), a guide plate (204) fixedly connected to the side wall of the sleeve (203), and a guide shaft (205) threadedly connected to the end of the connecting shaft (202). The end of the guide shaft (205) is inserted into the side wall of the sub-frame (104), and the guide plate (204) is slidably connected to the inside of the main frame (103).

2. The semi-trailer pin seat that is easy to install according to claim 1, characterized in that: The sleeve (203) is threadedly connected to a limiting plate (206), and the side wall of the limiting plate (206) is bolted to the side wall of the guide plate (204).

3. A semi-trailer pin seat that is easy to install according to claim 2, characterized in that: The inner wall of the main frame (103) is fixedly connected to a support plate (207), which is inserted into the inner side of the limiting groove on the side wall of the guide plate (204).

4. A semi-trailer pin seat that is easy to install according to claim 3, characterized in that: A spring (208) is sleeved in the middle of the guide shaft (205). One end of the spring (208) is fixedly connected to the side wall of the limiting plate (206), and the other end of the spring (208) is fixedly connected to the side wall of the sub-frame (104).

5. A semi-trailer pin seat that is easy to install according to claim 4, characterized in that: The guide shaft (205) is threaded to a limiting nut located on the outside of the sub-frame (104), and the main frame (103) is threaded to a limiting post that works in conjunction with the guide plate (204).

6. A semi-trailer pin seat that is easy to install according to claim 5, characterized in that: The side wall of the pallet (207) is threaded with a positioning block (209), the end of which extends to the side wall of the guide plate (204).

7. A semi-trailer pin seat that is easy to install according to claim 6, characterized in that: A pad (105) is fixedly connected inside the main frame (103). The pad (105) is installed above the fixing plate (102), and the side wall of the pad (105) is fixedly connected to the middle side wall of the support plate (207).

8. A semi-trailer pin seat that is easy to install according to claim 6, characterized in that: The main frame (103) has a threaded connection to a positioning pin (106) on its side wall. The end of the positioning pin (106) is connected to the side wall of the fixing plate (102) by a nut. The positioning pin (106) is symmetrically arranged on the side wall of the main shaft (101).

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