Trailer connecting device

Abstract

The utility model relates to the field of trailer connection and discloses a trailer connecting device which comprises a fixing plate, a fixing seat is fixedly connected to the middle of the front side wall of the fixing plate, the fixing seat is spherical, the left end and the right end of the outer wall of the fixing seat are planes, a clamping groove is formed in the top of the fixing seat and is cylindrical, and the upper portion of the front side of the clamping groove penetrates through the fixing seat. A first inserting hole is formed in the plane of the outer wall of the fixing base and penetrates through the middle of the fixing base left and right, the connector is slidably inserted into the clamping groove, the connector is spherical, a second inserting hole is formed in the outer wall of the connector, the second inserting hole is through left and right and communicated with the first inserting hole, and the first stud pin is slidably inserted into the first inserting hole and the second inserting hole. The first bearing and the second bearing allow the connector to rotate within a certain range, connection flexibility is improved, and meanwhile connection stability is guaranteed through fixing of the stud pin and the nut. The clamping groove design of the fixing base and the spherical design of the connector enable the butt joint process to be easier, and installation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of trailer connection, specifically is a trailer connecting device. BACKGROUND

[0002] In the logistics transportation industry, the connecting device between the trailer and the towing vehicle plays a crucial role, and the trailer connecting device often adopts a relatively simple mechanical lock or a bolt structure. These devices, although to some extent meet the connection requirements, gradually expose some problems in actual application.

[0003] The current connecting device has limitations in flexibility and stability. Due to the limitation of structural design, the connection between the trailer and the towing vehicle is often not flexible enough to adapt to complex and variable transportation environments. At the same time, in the long-term use process, the connecting device may loosen or wear, thereby affecting its stability and bringing hidden dangers to transportation safety. Due to the lack of effective alignment and guiding mechanism, the operator often needs to spend a lot of time and effort to ensure the accurate connection between the trailer and the towing vehicle. SUMMARY

[0004] In order to overcome the above-mentioned deficiencies, the utility model provides a trailer connecting device.

[0005] The utility model adopts the technical scheme:

[0006] The utility model provides a trailer connecting device, the front side wall middle part of fixed plate is fixedly connected with fixed seat, the fixed seat is spherical, the left and right ends of the outer wall of fixed seat are plane, the top of fixed seat is equipped with the clamping groove, the clamping groove is cylindrical, the front side upper portion of clamping groove is through fixed seat, the outer wall plane of fixed seat is equipped with the insertion hole no.

[0007] The inner wall of insertion hole no. Five is fixedly connected with two bearings no. One, two bearings no. One are distributed left and right, screw pin no. Two is inserted into insertion hole no. Four from left to right, screw pin no. Two is closely matched with the inner wall of bearing no. One, the right end of screw pin no. Two is threaded and sleeved with nut no. Two, and the right end of screw pin no. Two is threaded and sleeved with nut no. Two.

[0008] The insertion end outer wall of screw pin no. One, screw pin no. Two and screw pin no. Three is equipped with limiting hole, and split pin is inserted into the limiting hole.

[0009] The front side wall of fixed plate is equipped with mounting hole no. One in four corners, and the front side wall of trailer is equipped with mounting hole no. Two in four corners.

[0010] The utility model discloses the beneficial effect:

[0011] The utility model discloses through the design of screw pin and nut, can conveniently install and disassemble trailer connecting device, has improved work efficiency.

[0012] The use of bearing one and bearing two allows the joint to rotate within a certain range, increasing the flexibility of the connection, while the fixing of the stud pin and the nut ensures the stability of the connection.

[0013] The clamping groove design of the fixed seat and the spherical design of the joint make the docking process easier and reduce the installation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the utility model;

[0015] Figure 2 is Figure 1 a front view;

[0016] Figure 3 is Figure 2 a sectional view at A-A of figure

[0017] Figure 4 is Figure 1 a right view;

[0018] Figure 5 is Figure 4 a sectional view at B-B of figure

[0019] Figure 6 is a structural schematic diagram of the fixed seat of the utility model;

[0020] Figure 7 is Figure 1 a local enlarged Figure 1 ;

[0021] Figure 8 is Figure 1 a local enlarged Figure 2 .

[0022] In all the drawings, the reference signs are specifically: 1, fixed plate; 2, mounting hole one; 3, fixed seat; 4, clamping groove; 5, insertion hole one; 6, joint; 7, insertion hole two; 8, stud pin one; 9, nut one; 10, connecting rod; 11, connecting frame one; 12, insertion hole three; 13, towing frame; 14, mounting hole two; 15, connecting frame two; 16, insertion hole four; 17, connecting piece; 18, insertion hole five; 19, insertion hole six; 20, bearing one; 21, stud pin two; 22, nut two; 23, bearing two; 24, stud pin three; 25, nut three; 26, limiting hole; 27, split pin; 28, vertical plate; 29, flat plate one; 30, flat plate two; 31, horizontal plate. DETAILED DESCRIPTION

[0023] As Figures 1-8As shown: a trailer connecting device, including a fixed plate 1, the middle of the front side wall of the fixed plate 1 is fixedly connected with a fixed seat 3, the fixed seat 3 is spherical, the left and right ends of the outer wall of the fixed seat 3 are flat, a clamping groove 4 is formed in the top of the fixed seat 3, the clamping groove 4 is cylindrical, the front side upper part of the clamping groove 4 penetrates the fixed seat 3, a insertion hole one 5 is formed in the outer wall of the fixed seat 3, the insertion hole one 5 penetrates the middle of the fixed seat 3, a joint 6 is slidingly inserted into the clamping groove 4, the joint 6 is spherical, an insertion hole two 7 is formed in the outer wall of the joint 6, the insertion hole two 7 penetrates the joint 6, the insertion hole two 7 is communicated with the insertion hole one 5, a stud pin one 8 is slidingly inserted into the insertion hole one 5 and the insertion hole two 7, the right end of the stud pin one 8 penetrates out of the insertion hole one 5, the right end outer wall of the stud pin one 8 is threadedly sleeved with a nut one 9, the nut one 9 abuts against the outer wall of the fixed seat 3, the right end of the stud pin one 8 abuts against the outer wall of the fixed seat 3, the outer wall of the front side of the joint 6 is fixedly connected with a connecting rod 10, the front end of the connecting rod 10 is fixedly connected with one end of a connecting frame one 11, the connecting frame one 11 is U-shaped, the connecting frame one 11 is composed of a vertical plate 28, a flat plate one 29 and a flat plate two 30, the front end of the connecting rod 10 is fixedly connected with the vertical plate 28, one side of the vertical plate 28 is vertically fixedly connected with the flat plate one 29 and the flat plate two 30, respectively, the top of the flat plate one 29 and the top of the flat plate two 30 are provided with an insertion hole three 12, a towing frame 13 is located at the front side of the connecting frame one 11, the rear side wall of the middle of the towing frame 13 is fixedly connected with one end of a connecting frame two 15, the connecting frame two 15 is U-shaped, one end of the connecting frame two 15 is connected with each other, the two sides of one end of the connecting frame two 15 extend out of a horizontal plate 31, the two horizontal plates 31 are provided with an insertion hole four 16, the connecting frame one 11 and the connecting frame two 15 are provided with a connecting piece 17, the rear end of the connecting piece 17 is inserted between the flat plate one 29 and the flat plate two 30, the front end of the connecting piece 17 is inserted between the two horizontal plates 31, the left and right side walls of the front end of the connecting piece 17 are provided with an insertion hole five 18, the top and bottom of the rear end of the connecting piece 17 are provided with an insertion hole six 19.

[0024] The inner wall of the insertion hole five 18 is fixedly connected with two bearings one 20, the two bearings one 20 are distributed left and right, a stud pin two 21 is inserted into the insertion hole four 16 from left to right, the stud pin two 21 is tightly matched with the inner wall of the bearing one 20, the right end of the stud pin two 21 penetrates out of the right side of the connecting frame two 15, the right end outer wall of the stud pin two 21 is threadedly sleeved with a nut two 22, the nut two 22 abuts against the right side wall of the connecting frame two 15, the inner wall of the insertion hole six 19 is provided with two bearings two 23, the two bearings two 23 are distributed up and down, a stud pin three 24 is inserted into the insertion hole three 12 from up to down, the stud pin three 24 is tightly matched with the inner wall of the bearing two 23, the bottom end of the stud pin three 24 penetrates out of the bottom of the connecting frame one 11, the bottom end outer wall of the stud pin three 24 is threadedly sleeved with a nut three 25, the nut three 25 abuts against the bottom of the connecting frame one 11.

[0025] The insertion end outer wall of the stud pin one 8, the stud pin two 21 and the stud pin three 24 is provided with a limiting hole 26, an open pin 27 is inserted into the limiting hole 26.

[0026] The front side wall of the fixed plate 1 is provided with mounting holes 2 at four corners, and the front side wall of the trailer frame 13 is provided with mounting holes 14 at four corners.

[0027] First, make sure that the fixed plate 1 has been firmly installed at the tail of the tractor, and at the same time, the trailer frame 13 of the trailer is also ready, and the mounting holes 2 on the fixed plate 1 and the mounting holes 14 on the trailer frame 13 are used for fixed installation.

[0028] Insert the rear end of the connecting piece 17 into the inner side of the connecting frame 11, and insert the front end into the inner side of the connecting frame 15, which ensures the preliminary connection between the connecting frame 11 and the connecting frame 15.

[0029] Insert the stud pin 21 from the left side into the insertion hole 4, and pass through the bearing 20, which is in rotational cooperation with the insertion hole 5 of the connecting piece 17, and then pass the right end of the stud pin 21 out of the right side of the connecting frame 15, and thread the nut 22 on the outer wall of the connecting frame 15 and abut the right side wall of the connecting frame 15 to fix the stud pin 21.

[0030] Insert the stud pin 24 from the top into the insertion hole 3, and pass through the bearing 23, which is in rotational cooperation with the insertion hole 6 of the connecting piece 17, and then pass the bottom end of the stud pin 24 out of the bottom of the connecting frame 11, and thread the nut 25 on the outer wall of the connecting frame 11 and abut the bottom of the connecting frame 11 to fix the stud pin 24.

[0031] After the connecting piece 17 is installed, align the joint 6 with the clamping groove 4 of the fixed seat 3 and insert it, ensuring that the clamping groove of the joint 6 is fully matched with the clamping groove 4 of the fixed seat 3.

[0032] Insert the stud pin 8 from the insertion hole 1, pass through the insertion hole 2 of the fixed seat 3 and the joint 6, and then pass the right end of the stud pin 8 out of the insertion hole 1, and thread the nut 9 on the outer wall of the fixed seat 3 and abut the outer wall of the fixed seat 3 to fix the stud pin 8.

[0033] Insert the split pin 27 into the limiting hole 26 on the outer wall of the insertion end of the stud pin 8, the stud pin 21 and the stud pin 24 to ensure that the pin shaft cannot be accidentally dropped.

Claims

1. A trailer connecting device, characterized in that The utility model relates to a kind of fixed plate (1), the middle part of the front side wall of fixed plate (1) is fixedly connected with fixed seat (3), fixed seat (3) is spherical, the outer wall left and right end of fixed seat (3) is plane, the top of fixed seat (3) is equipped with clamping groove (4), clamping groove (4) is cylindrical, the front side upper portion of clamping groove (4) is through fixed seat (3), the outer wall plane of fixed seat (3) is equipped with insertion hole one (5), insertion hole one (5) is through the middle part of fixed seat (3) left and right, connector (6) is slidably inserted in clamping groove (4), connector (6) is spherical, the outer wall of connector (6) is equipped with insertion hole two (7), insertion hole two (7) is through connector (6) left and right, insertion hole two (7) is communicated with insertion hole one (5), stud pin one (8) is slidably inserted in insertion hole one (5) and insertion hole two (7), the right end of stud pin one (8) is penetrated out insertion hole one (5), the right end outer wall of stud pin one (8) is threadedly sleeved with nut one (9), nut one (9) is abutted with the outer wall of fixed seat (3), the right end of stud pin one (8) is abutted in the outer wall of fixed seat (3), the outer wall front side of connector (6) is fixedly connected with connecting rod (10), the front end of connecting rod (10) is fixedly connected with one end of connecting frame one (11), connecting frame one (11) is U-shaped, connecting frame one (11) is composed of vertical plate (28), flat plate one (29) and flat plate two (30), the front end of connecting rod (10) is fixedly connected with vertical plate (28), the one side upper end of vertical plate (28) is vertically fixedly connected with flat plate one (29) and flat plate two (30) respectively, the top of flat plate one (29) and the top of flat plate two (30) are equipped with insertion hole three (12) respectively, towed frame (13) is located in the front side of connecting frame one (11), the rear side wall middle part of towed frame (13) is fixedly connected with one end of connecting frame two (15), connecting frame two (15) is U-shaped, one end of connecting frame two (15) is connected with each other, the both sides of one end of connecting frame two (15) extend out transverse plate (31), two transverse plates (31) are equipped with insertion hole four (16), connecting piece (17) is between connecting frame one (11) and connecting frame two (15), the rear end of connecting piece (17) is inserted between flat plate one (29) and flat plate two (30), the front end of connecting piece (17) is inserted between two transverse plates (31), the front end left and right side wall of connecting piece (17) is equipped with insertion hole five (18), the rear end top and bottom of connecting piece (17) are equipped with insertion hole six (19).

2. A trailer coupling device according to claim 1, characterised in that The inner wall of the insertion hole five (18) is fixedly connected with two bearings one (20), the two bearings one (20) are distributed left and right, the stud pin two (21) is inserted into the insertion hole four (16) from left to right, the stud pin two (21) is in close fit with the inner wall of the bearing one (20), the right end of the stud pin two (21) penetrates out of the right side of the connecting frame two (15), the right end of the stud pin two (21) is externally threaded and connected with the nut two (22), the nut two (22) abuts against the right side wall of the connecting frame two (15), the inner wall of the insertion hole six (19) is provided with two bearings two (23), the two bearings two (23) are distributed up and down, the stud pin three (24) is inserted into the insertion hole three (12) from up to down, the stud pin three (24) is in close fit with the inner wall of the bearing two (23), the bottom end of the stud pin three (24) penetrates out of the bottom of the connecting frame one (11), the bottom end of the stud pin three (24) is externally threaded and connected with the nut three (25), the nut three (25) abuts against the bottom of the connecting frame one (11).

3. A trailer coupling device according to claim 2, characterised in that The insertion end of the stud pin one (8), the stud pin two (21) and the stud pin three (24) is externally threaded and connected with the open pin (27).

4. A trailer coupling device according to claim 1, characterised in that The front side wall of the fixed plate (1) is provided with the mounting hole one (2) at four corners, the front side wall of the towing frame (13) is provided with the mounting hole two (14) at four corners.

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