Lock structure of semitrailer frame

Abstract

The utility model relates to the field of semitrailers, and discloses a semitrailer frame lock structure which comprises a fixing plate, a connecting rod fixedly connected to the middle of the bottom of the front side wall of the fixing plate, a connecting pipe fixedly connected to the front end of the connecting rod, and two round plates arranged above the connecting pipe and distributed up and down. First insertion holes are formed in the centers of the tops of the two circular plates, and two guide blocks are fixedly connected between the opposite side walls of the two circular plates and distributed in a bilateral symmetry mode. According to the lockset structure, the two guide blocks can be rotated according to needs to adjust the orientation of the guide blocks, so that the lockset structure can be more flexibly adapted to pull racks with different sizes and shapes, and the universality and the practicability of the lockset structure are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of semitrailer, concretely is a semitrailer frame lock structure. BACKGROUND

[0002] In the logistics transportation industry, the semi-trailer as an important transport tool, its connection stability and operation convenience have important significance to improve the transportation efficiency and safety.

[0003] However, the current semi-trailer frame lock structure often has problems such as complex connection process, difficult alignment, insufficient fixing stability, etc., which not only increases the operation difficulty, but also may cause safety hazards in the operation process. UTILITY MODEL CONTENTS

[0004] In order to overcome the above-mentioned deficiencies, the utility model provides a kind of semi-trailer frame lock structure.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A kind of semi-trailer frame lock structure, including fixed plate, the front side wall bottom middle part of fixed plate is fixedly connected with connecting rod, the front end of connecting rod is fixedly connected with connecting pipe, the upper portion of connecting pipe has two round plates, two round plates are distributed up and down, the top center of two round plates is provided with insertion hole one, two guide blocks are fixedly connected between the opposite side walls of two round plates, two guide blocks are symmetrically distributed left and right, two guide blocks are fixedly connected between the rear end, the opposite side walls of two guide blocks are inclined to front end outer side, two guide blocks are flared between two guide blocks, the bottom of lower round plate is fixedly connected with limiting pipe, limiting pipe is sleeved on the outer wall of connecting pipe, limiting pipe is rotatably connected with connecting pipe, there is plane bearing between the top of connecting pipe and the bottom of lower round plate, the top of connecting pipe and the bottom of lower round plate are rotatably connected through plane bearing, the hole diameter of insertion hole one is equal to the inner diameter of connecting pipe, the rear end top of towed frame is provided with insertion hole two, the rear end of towed frame is inserted between two round plates and two guide blocks, insertion hole two is adapted with insertion hole one, plug pin is from top to bottom and passes through insertion hole one and insertion hole two and connecting pipe, plug pin is slidably connected with insertion hole one, insertion hole two and connecting pipe, the bottom end of plug pin passes through the bottom of connecting pipe, the top end of plug pin is fixedly connected with pull ring;Connecting pipe outer wall is sleeved with bearing, connecting pipe is bearing between connecting pipe and limiting pipe, connecting pipe is rotatably connected with limiting pipe through bearing.

[0007] The outer wall of plug pin is provided with limiting hole, and the limiting hole is located below the connecting pipe, and the opening pin is inserted into the limiting hole.

[0008] The utility model has the advantages that:

[0009] The towing frame can be easily inserted between the two guide blocks without human accurate alignment, the connecting process is greatly simplified, and the working efficiency is improved.

[0010] The operator can rotate the two guide blocks as required to adjust the orientation thereof, thereby more flexibly adapting to towing frames of different sizes and shapes, and improving the versatility and practicality of the lock structure. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic view of the utility model;

[0012] Figure 2 is Figure 1 is a lower view angle structural schematic view;

[0013] Figure 3 is a partial structure explosion drawing of the utility model;

[0014] Figure 4 is Figure 1 is an elevation view;

[0015] Figure 5 is Figure 4 is a section view at A-A of the utility model;

[0016] Figure 6 is a guide block rotation schematic view of the utility model.

[0017] In all the drawings, the specific reference signs are as follows: 1, fixed plate; 2, connecting rod; 3, connecting pipe; 4, round plate; 5, limiting pipe; 6, plane bearing; 7, insertion hole one; 8, guide block; 9, towing frame; 10, insertion hole two; 11, bolt; 12, pull ring; 13, limiting hole; 14, split pin; 15, bearing. DETAILED DESCRIPTION

[0018] As Figures 1-6As shown: a semitrailer frame lock structure, including a fixed plate 1, the front side wall of the fixed plate 1 is fixedly connected with a connecting rod 2 at the bottom of the middle part, the front end of the connecting rod 2 is fixedly connected with a connecting pipe 3, the upper part of the connecting pipe 3 is provided with two round plates 4, the two round plates 4 are distributed up and down, the top center of the two round plates 4 is provided with a insertion hole one 7, the opposite side walls of the two round plates 4 are fixedly connected with two guide blocks 8, the two guide blocks 8 are symmetrically distributed left and right, the rear ends of the two guide blocks 8 are fixedly connected, the opposite side walls of the two guide blocks 8 are inclined to the outer side of the front end, the two guide blocks 8 are in the shape of a flared, the bottom of the lower round plate 4 is fixedly connected with a limiting pipe 5, the limiting pipe 5 is sleeved on the outer wall of the connecting pipe 3, the limiting pipe 5 is rotatably connected with the connecting pipe 3, the top of the connecting pipe 3 and the bottom of the lower round plate 4 are provided with a plane bearing 6, the top of the connecting pipe 3 and the bottom of the lower round plate 4 are rotatably connected through the plane bearing 6, the hole diameter of the insertion hole one 7 is equal to the inner diameter of the connecting pipe 3, the rear end top of the tow frame 9 is provided with an insertion hole two 10, the rear end of the tow frame 9 is inserted between the two round plates 4 and the two guide blocks 8, the insertion hole two 10 is matched with the insertion hole one 7, a bolt 11 penetrates the insertion hole one 7, the insertion hole two 10 and the connecting pipe 3 from top to bottom, the bolt 11 is slidably connected with the insertion hole one 7, the insertion hole two 10 and the connecting pipe 3, the bottom end of the bolt 11 penetrates out of the bottom of the connecting pipe 3, the top end of the bolt 11 is fixedly connected with a pull ring 12; the outer wall of the connecting pipe 3 is sleeved with a bearing 15, the connecting pipe 3 and the limiting pipe 5 are connected through the bearing 15, the connecting pipe 3 is rotatably connected with the limiting pipe 5 through the bearing 15.

[0019] The outer wall of the bolt 11 is provided with a limiting hole 13, the limiting hole 13 is below the connecting pipe 3, and an open pin 14 is inserted in the limiting hole 13.

[0020] Firstly, the fixed plate 1 has been firmly installed at the tail of the towing vehicle, and the tow frame 9 of the trailer is also ready, and the rear end top is provided with an insertion hole two 10.

[0021] When it is needed to connect the tow frame 9 to the towing vehicle, the operator aligns and inserts the front end of the tow frame 9 between the two guide blocks 8, because the opposite side walls of the two guide blocks 8 are inclined to the outer side of the rear end, forming a flared design, which makes the tow frame 9 easily enter the space between the two round plates 4 under the guidance of the guide blocks 8.

[0022] During the insertion of the tow frame 9, the operator can rotate the two guide blocks 8 as needed to adjust their orientation, so as to more smoothly guide the tow frame 9 to enter, which greatly simplifies the connection process and reduces the difficulty of alignment.

[0023] With the continuous pushing of the trailer 9, the socket two 10 will gradually align with the socket one 7 on the top of the two circular plates 4. Once aligned, the operator can insert the pin 11 from top to bottom, so that the pin 11 penetrates through the socket one 7, the socket two 10 and the connecting pipe 3. The bottom end of the pin 11 penetrates out of the bottom of the connecting pipe 3, and the top end is fixedly connected with the pull ring 12, so as to facilitate the subsequent pulling out operation.

[0024] In order to ensure that the pin 11 will not be accidentally removed, the operator will insert the split pin 14 into the limiting hole 13 on the outer wall of the pin 11, thereby completing the entire connection process.

Claims

1. A semi-trailer frame lock structure, characterized by, The utility model provides a kind of trailer, including fixed plate (1), the front side wall bottom middle part of fixed plate (1) is connected with connecting rod (2), the front end of connecting rod (2) is connected with connecting pipe (3), the upper portion of connecting pipe (3) has two round plates (4), two round plates (4) are distributed up and down, the top center of two round plates (4) is equipped with insertion hole one (7), two guide blocks (8) are fixedly connected between the opposite side walls of two round plates (4), two guide blocks (8) are symmetrically distributed left and right, two guide blocks (8) are fixedly connected between rear end, the opposite side walls of two guide blocks (8) are inclined to front end outside, two guide blocks (8) are in flared shape between, the bottom of lower round plate (4) is fixedly connected with limiting pipe (5), limiting pipe (5) is sleeved in the outer wall of connecting pipe (3), limiting pipe (5) is rotatably connected with connecting pipe (3), the top of connecting pipe (3) and the bottom of lower round plate (4) between there is plane bearing (6), the top of connecting pipe (3) and the bottom of lower round plate (4) are rotatably connected by plane bearing (6), the aperture of insertion hole one (7) is equal to the inner diameter of connecting pipe (3), the rear end top of trailer (9) is equipped with insertion hole two (10), the rear end of trailer (9) is inserted between two round plates (4) and two guide blocks (8), insertion hole two (10) is adapted with insertion hole one (7), bolt (11) is from top to bottom and passes through insertion hole one (7) and insertion hole two (10) and connecting pipe (3), bolt (11) is slidably connected with insertion hole one (7), insertion hole two (10) and connecting pipe (3), the bottom end of bolt (11) is passed out the bottom of connecting pipe (3), the top end of bolt (11) is fixedly connected with pull ring (12);Connecting pipe (3) outer wall is sleeved with bearing (15), connecting pipe (3) and limiting pipe (5) are bearing (15), connecting pipe (3) is rotatably connected with limiting pipe (5) by bearing (15).

2. A locking mechanism for a semi-trailer frame according to claim 1, wherein Bolt (11) outer wall is equipped with limiting hole (13), limiting hole (13) is below connecting pipe (3), open pin (14) is inserted in limiting hole (13).

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