Trailer carriage positioning structure

Abstract

The utility model discloses a trailer carriage positioning structure which comprises two guide rails, a carriage and a positioning assembly. The key points of the utility model are as follows: the outer side wall of each guide rail is inwards provided with a plurality of lock pin holes penetrating through the guide rail; the positioning assembly is connected between the two guide rails and located on one side of the sliding frame, the positioning assembly comprises a positioning rod, the first end and the second end of the positioning rod are rotationally matched with the lock pin holes of the two guide rails respectively, and the second end is provided with a lock block located outside the outer side walls of the guide rails; the lock block is driven by the positioning rod to rotate, when the lock block rotates to the position where the projection of the lock block intersects with the projection of the lock pin hole in the axial direction of the lock pin hole, the positioning rod is in a locked state, and when the projection of the lock block rotates to the position where the projection of the lock block coincides with the projection of the lock pin hole, the positioning rod is in an unlocked state. The positioning rod can move to the lock pin hole adjacent to the target position and be locked according to the axle distance adjusting requirement, then the sliding frame quickly and accurately moves to the target position, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a trailer slide positioning structure. Background Art

[0002] The slide (sub-frame) of a semi-trailer is used to adjust the wheelbase between the rear wheel axle and the front wheel of the tractor. The existing trailer slide positioning structure includes two parallel guide rails and a slide connected between the two guide rails. Each guide rail is provided with a plurality of locking pin holes, and the locking pin holes of the two guide rails correspond to each other. A locking pin is provided on each side of the slide, and a locking pin cooperates with a locking pin hole of a guide rail. When the wheelbase needs to be adjusted, the locking pin first withdraws from the locking pin hole to unlock the slide, and then the slide moves to the target position, and the locking pin is inserted into the locking pin hole to lock the slide. However, when adjusting the wheelbase, the locking pin is not easy to align with the locking pin hole in the above structure, resulting in low work efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a trailer slide positioning structure, which positions the slide in the length direction of the slide by setting a positioning rod, so that the locking pin of the slide and the locking pin hole can be quickly aligned and the structure is simple.

[0004] To achieve the above purpose, the embodiment of the utility model adopts the following technical solutions:

[0005] A trailer slide positioning structure, comprising two guide rails, a slide and a positioning assembly;

[0006] The two guide rails are arranged opposite to each other, and the outer side wall of each guide rail is provided with a plurality of locking pin holes penetrating therethrough, and the locking pin holes of the two guide rails correspond to each other;

[0007] The slide is connected between the two guide rails and is provided with a locking pin that cooperates with the locking pin hole;

[0008] The positioning assembly is connected between the two guide rails and is located on one side of the slide, and the positioning assembly includes a positioning rod, a first end of the positioning rod is rotatably matched with a locking pin hole of one of the guide rails, and a second end of the positioning rod is rotatably matched with a locking pin hole of the other guide rail, and the second end is provided with a locking block located outside the outer side wall of the guide rail, and the locking block protrudes outward relative to the outer peripheral wall of the positioning rod; the locking block rotates under the drive of the positioning rod, and when viewed along the axial direction of the locking pin hole, when the locking block rotates until its projection intersects with the projection of the locking pin hole, the positioning rod is in a locked state, and when the locking block rotates until its projection coincides with the projection of the locking pin hole, the positioning rod is in an unlocked state.

[0009] Furthermore, the positioning rod is provided with a positioning hole passing through the first end and the second end along its length direction, the axis of the positioning hole is parallel to the axis of the positioning rod and is offset by a distance relative to the axis of the positioning rod, the positioning rod includes a rotating shaft rotatably matched with the positioning hole, the two ends of the rotating shaft respectively extend out of the first end and the second end and pass through the locking pin holes corresponding thereto, and the locking block is fixedly sleeved on the rotating shaft.

[0010] Furthermore, a limit plate rotatably engaged with the locking pin hole is fixed to the end surface of the second end, and a limit groove is provided on the end surface of the limit plate away from the second end, one end of the limit groove passes through the outer peripheral wall of the limit plate, the rotating shaft is located in the limit groove, the locking block is engaged with the limit groove, and one end of the locking block away from the rotating shaft extends out of the limit groove.

[0011] Furthermore, the outer wall of the limiting plate is provided with a plurality of grooves distributed along its circumference, the plurality of grooves surround the outer side of the limiting groove and pass through both ends of the limiting plate, the grooves are filled with solder, and the rotation radius of the locking block is smaller than the diameter of the positioning rod.

[0012] Furthermore, the positioning rod is a round tube, and the positioning rod also includes two end caps, which respectively cooperate with the first end and the second end of the round tube and respectively rotatably cooperate with the two corresponding locking pin holes, and the two end caps are respectively provided with a positioning hole passing through them, and the positioning hole is connected to the inner cavity of the round tube and its diameter is smaller than the inner diameter of the round tube, and the two ends of the rotating shaft are respectively rotatably cooperated with the positioning holes of the two end caps.

[0013] Furthermore, a washer and a spring are sleeved on one end of the rotating shaft corresponding to the first end, the washer and the spring are located outside the outer side wall of the guide rail, and the spring is located between the first end and the washer and abuts against the first end and the washer.

[0014] Furthermore, an end plate located inside the gasket is fixed to the end face of the first end, and an end of the rotating shaft corresponding to the first end passes through the end plate outwardly and the two are loosely matched, the spring is located between the end plate and the gasket and is abutted against the end plate and the gasket, and the part of the rotating shaft located outside the gasket is bent and extended to form an operating part.

[0015] Furthermore, a limiting plate rotatably matched with the locking pin hole is fixed to the end surface of the second end, and the outer peripheral wall of the limiting plate integrally protrudes outward to form the locking block.

[0016] The positioning assembly of the trailer slide positioning structure of the utility model is provided with a positioning rod, the positioning rod positions the slide in the length direction of the slide, and the first end of the positioning rod is provided to rotate with a lock pin hole of a guide rail, the second end of the positioning rod is provided to rotate with a lock pin hole of another guide rail, and the second end is provided with a locking block located outside the outer wall of the guide rail, the locking block protrudes outward relative to the outer peripheral wall of the positioning rod, so that the locking block rotates under the drive of the positioning rod, and when the locking block rotates to the projection of the locking pin hole and intersects with the projection of the locking pin hole along the axial direction of the locking pin hole, the positioning rod is in a locked state; when the locking block rotates to the projection of the locking pin hole coincides with the projection of the locking pin hole, the positioning rod is in an unlocked state, at this time, the positioning rod can be moved to the lock pin hole adjacent to the target position according to the wheelbase adjustment requirements and locked, and then the slide can be quickly and accurately moved to the target position, that is, the slide can be quickly moved to the target position with the positioning rod as a reference, so that the locking pin and the lock pin hole are quickly aligned, thereby improving work efficiency. The trailer slide positioning structure of the utility model is simple and easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a top view schematic diagram of the trailer slide positioning structure according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A partial exploded schematic diagram of the positioning component;

[0019] Figure 3 for Figure 2 A three-dimensional composite diagram;

[0020] Figure 4 for Figure 1 A partial schematic diagram of the positioning rod in a locked state;

[0021] Figure 5 for Figure 4 A partial schematic diagram of the positioning rod in the unlocked state. DETAILED DESCRIPTION

[0022] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0023] like Figures 1 to 5 As shown, an embodiment of the utility model provides a trailer slide positioning structure, which is applied to a semi-trailer and includes two guide rails 1, a slide 2 and a positioning assembly 3.

[0024] like Figure 1 , Figure 2As shown, the two guide rails 1 are arranged oppositely and in parallel, and the outer side wall of each guide rail 1 is provided with a plurality of locking pin holes 11 penetrating therethrough, and the plurality of locking pin holes 11 are evenly distributed along the length direction of the guide rail 1, and the locking pin holes 11 of the two guide rails 1 correspond to each other. The slide 2 is connected between the two guide rails 1, and the left and right sides thereof are respectively provided with locking pins 21 which are clearance-matched with the locking pin holes 11 of the two guide rails 1. When the locking pins 21 are matched with the locking pin holes 11, the slide 2 is locked, and when the locking pins 21 are disengaged from the locking pin holes 11, the slide 2 is unlocked, and at this time, the wheelbase of the semi-trailer can be adjusted by moving the slide 2.

[0025] like Figure 1 , Figure 2 As shown, the positioning assembly 3 is connected between the two guide rails 1 and is located at the front side of the slide 2. Of course, in other embodiments, two groups of positioning assemblies 3 may be provided, and the two groups of positioning assemblies 3 are respectively located at the front and rear sides of the slide 2, which can prevent the slide 3 from moving forward and backward, and further improve driving safety. The positioning assembly 3 includes a positioning rod 31, and the first end 311 (left end) of the positioning rod 31 is rotationally matched with a locking pin hole 11 of one guide rail 1, and the second end 312 (right end) of the positioning rod 31 is rotationally matched with a locking pin hole 11 of the other guide rail 1, so that the positioning rod 31 can rotate relative to the guide rail 1, and the second end 312 is provided with a locking block 32 located outside the outer wall of the guide rail 1, and the locking block 32 protrudes outward relative to the outer peripheral wall of the positioning rod 31, so that the locking block 32 rotates under the drive of the positioning rod 31. As shown Figure 4 , Figure 5 As shown, viewed along the axial direction of the locking pin hole 11, when the locking block 32 rotates until its projection intersects with the projection of the locking pin hole 11, the positioning rod 31 is in a locked state; when the locking block 32 rotates until its projection coincides with the projection of the locking pin hole 11, the positioning rod 31 is in an unlocked state. At this time, the positioning rod 31 can be moved to the locking pin hole 11 adjacent to the target position and locked according to the wheelbase adjustment requirements, and then the slide 2 can be quickly and accurately moved to the target position, that is, the slide 2 can be quickly moved to the target position with the positioning rod 31 as a reference, so that the locking pin 21 and the locking pin hole 11 can be quickly aligned, thereby improving work efficiency and having a simple structure.

[0026] like Figure 2 , Figure 3As shown, the positioning rod 31 is provided with a positioning hole 310 passing through the first end 311 and the second end 312 along its length direction, the axis of the positioning hole 310 is parallel to the axis of the positioning rod 31 and is offset by a distance relative to the axis of the positioning rod 31, the positioning rod 31 includes a rotating shaft 313 rotatably matched with the positioning hole 310, the two ends of the rotating shaft 313 respectively extend out of the first end 311 and the second end 312 and pass through the corresponding locking pin hole 11, the locking block 32 is fixedly sleeved on the rotating shaft 313 by welding or a tight fitting connection so as to rotate under the drive of the rotating shaft 313, that is, the rotation center of the locking block 32 is eccentric to the positioning rod 31, and the rotation radius of the locking block 32 is smaller than the diameter of the positioning rod 31, so that the positioning rod 31 can be locked or unlocked.

[0027] like Figure 2 , Figure 3 As shown, specifically, a limit plate 314 rotatably matched with the locking pin hole 11 is fixed to the end surface of the second end 312 by welding, and a limit groove 3141 is provided on the end surface of the limit plate 314 away from the second end 312, and one end of the limit groove 3141 passes through the outer peripheral wall of the limit plate 314 to form an opening, and the rotating shaft 313 is located in the limit groove 3141, and the locking block 32 is engaged with the limit groove 3141, and the end of the locking block 32 away from the rotating shaft 313 extends out of the limit groove 3141 from the opening, so that the locking block 32 protrudes outward relative to the outer peripheral wall of the positioning plate limit plate 314 to form an eccentric structure. More specifically, in order to facilitate welding, a plurality of grooves 3142 evenly distributed along the circumference are opened inwardly on the outer wall of the limiting plate 314. The plurality of grooves 3142 surround the outer side of the limiting groove 3141 and pass through both ends of the limiting plate 314. The grooves 3142 are filled with solder 3143. When welding the limiting plate 314, welding is performed in the grooves 3142.

[0028] like Figure 2 , Figure 3 As shown, in order to reduce the dead weight and simplify the processing technology and structure, in the present embodiment, the positioning rod 31 is a round tube, and the round tube is made of steel tube. The positioning rod 31 also includes two end caps 315 respectively used to close the two ends of the positioning rod 31, and the two end caps 315 are respectively matched with the first end 311 and the second end 312 of the round tube and are respectively rotatably matched with the two corresponding locking pin holes 11. The two end caps 315 are respectively provided with a positioning hole 310 passing through them, and the positioning hole 310 is connected to the inner cavity of the round tube and its diameter is smaller than the inner diameter of the round tube. The two ends of the rotating shaft 313 are respectively rotatably matched with the positioning holes 310 of the two end caps 315.

[0029] like Figure 2 , Figure 3As shown, a washer 33 and a spring 34 are sleeved on one end of the rotating shaft 313 corresponding to the first end 311. The washer 33 is tightly matched with the rotating shaft 313 and both are located outside the outer wall of the guide rail 1. The spring 34 is located between the first end 311 and the washer 33 and abuts against the first end 311 and the washer 33. The spring 34 is used to reset the rotating shaft 313. Specifically, an end plate 35 located inside the washer 33 is fixed to the end surface of the first end 311 by welding or bolts. The end plate 35 can cover the end surface of the first end 311. The end of the rotating shaft 313 corresponding to the first end 311 passes through the end plate 35 outwardly and the two are in clearance fit. The spring 34 is located between the end plate 35 and the washer 33 and abuts against the end plate 35 and the washer 33. The part of the rotating shaft 313 located outside the washer 33 is bent and extended to form an operating portion 316.

[0030] The operator first pushes the rotating shaft 313 inwardly through the operating portion 316 to make the locking block 32 disengage from the limiting plate 314, and then rotates the rotating shaft 313. The locking block 32 rotates driven by the rotating shaft 313. When viewed along the axial direction of the locking pin hole 11, when the locking block 32 rotates until its projection intersects with the projection of the locking pin hole 11, that is, when the locking block 32 is engaged with the limiting groove 3141, the positioning rod 31 is in a locked state. When adjusting the wheelbase, the operator first pushes the rotating shaft 313 inwardly through the operating portion 316 until the locking block 32 is disengaged from the limiting plate 314. At this time, the locking block 32 is located at the limiting plate The operator then rotates the rotating shaft 313 through the operating part 316 to drive the locking block 32 to rotate. When viewed along the axial direction of the locking pin hole 11, when the locking block 32 rotates until its projection coincides with the projection of the locking pin hole 11, the positioning rod 31 is in an unlocked state. At this time, the positioning rod 31 can be removed, and then the positioning rod 31 can be moved to the locking pin hole 11 adjacent to the target position according to the wheelbase adjustment requirements, and the rotating shaft 313 is rotated through the operating part 316 until the locking block 32 is stuck in the limiting groove 3141. At the same time, the rotating shaft 313 is reset under the elastic force of the spring 34.

[0031] The positioning assembly of the trailer slide positioning structure of the utility model is provided with a positioning rod, the positioning rod positions the slide in the length direction of the slide, and the first end of the positioning rod is provided to rotate with a lock pin hole of a guide rail, the second end of the positioning rod is provided to rotate with a lock pin hole of another guide rail, and the second end is provided with a locking block located outside the outer wall of the guide rail, the locking block protrudes outward relative to the outer peripheral wall of the positioning rod, so that the locking block rotates under the drive of the positioning rod, and when the locking block rotates to the projection of the locking pin hole and intersects with the projection of the locking pin hole along the axial direction of the locking pin hole, the positioning rod is in a locked state; when the locking block rotates to the projection of the locking pin hole coincides with the projection of the locking pin hole, the positioning rod is in an unlocked state, at this time, the positioning rod can be moved to the lock pin hole adjacent to the target position according to the wheelbase adjustment requirements and locked, and then the slide can be quickly and accurately moved to the target position, that is, the slide can be quickly moved to the target position with the positioning rod as a reference, so that the locking pin and the lock pin hole are quickly aligned, thereby improving work efficiency. The trailer slide positioning structure of the utility model is simple and easy to disassemble and assemble.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. The trailer slide positioning structure is characterized by: It includes two guide rails, a slide and a positioning assembly; The two guide rails are arranged opposite to each other, and the outer side wall of each guide rail is provided with a plurality of locking pin holes penetrating therethrough, and the locking pin holes of the two guide rails correspond to each other; The slide is connected between the two guide rails and is provided with a locking pin that cooperates with the locking pin hole; The positioning assembly is connected between the two guide rails and is located on one side of the slide, and the positioning assembly includes a positioning rod, a first end of the positioning rod is rotatably matched with a locking pin hole of one of the guide rails, and a second end of the positioning rod is rotatably matched with a locking pin hole of the other guide rail, and the second end is provided with a locking block located outside the outer side wall of the guide rail, and the locking block protrudes outward relative to the outer peripheral wall of the positioning rod; the locking block rotates under the drive of the positioning rod, and when viewed along the axial direction of the locking pin hole, when the locking block rotates until its projection intersects with the projection of the locking pin hole, the positioning rod is in a locked state, and when the locking block rotates until its projection coincides with the projection of the locking pin hole, the positioning rod is in an unlocked state.

2. The trailer slide positioning structure according to claim 1, characterized in that: The positioning rod is provided with a positioning hole passing through the first end and the second end along its length direction, the axis of the positioning hole is parallel to the axis of the positioning rod and is offset a distance relative to the axis of the positioning rod, the positioning rod includes a rotating shaft rotatably matched with the positioning hole, the two ends of the rotating shaft respectively extend out of the first end and the second end and pass through the locking pin holes corresponding thereto, and the locking block is fixedly sleeved on the rotating shaft.

3. The trailer slide positioning structure according to claim 2, characterized in that: A limit plate rotatably matched with the locking pin hole is fixed to the end surface of the second end, and a limit groove is provided on the end surface of the limit plate away from the second end. One end of the limit groove passes through the outer peripheral wall of the limit plate, and the rotating shaft is located in the limit groove. The locking block is engaged with the limit groove, and one end of the locking block away from the rotating shaft extends out of the limit groove.

4. The trailer slide positioning structure according to claim 3, characterized in that: The outer wall of the limiting plate is provided with a plurality of grooves distributed along its circumference, the plurality of grooves surround the outer side of the limiting groove and pass through both ends of the limiting plate, the grooves are filled with solder, and the rotation radius of the locking block is smaller than the diameter of the positioning rod.

5. The trailer slide positioning structure according to claim 2, characterized in that: The positioning rod is a round tube, and the positioning rod also includes two end caps, which respectively cooperate with the first end and the second end of the round tube and respectively rotatably cooperate with the two corresponding locking pin holes. The two end caps are respectively provided with a positioning hole passing through them, and the positioning hole is connected to the inner cavity of the round tube and its diameter is smaller than the inner diameter of the round tube. The two ends of the rotating shaft are respectively rotatably cooperated with the positioning holes of the two end caps.

6. The trailer slide positioning structure according to claim 2, characterized in that: The end of the rotating shaft corresponding to the first end is sleeved with a washer and a spring, the washer and the spring are located outside the outer side wall of the guide rail, the spring is located between the first end and the washer and abuts against the first end and the washer.

7. The trailer slide positioning structure according to claim 6, characterized in that: An end plate located inside the gasket is fixed to the end face of the first end, and an end of the rotating shaft corresponding to the first end passes through the end plate outwardly and the two are loosely matched, the spring is located between the end plate and the gasket and is abutted against the end plate and the gasket, and the part of the rotating shaft located outside the gasket is bent and extended to form an operating part.

8. The trailer slide positioning structure according to claim 1, characterized in that: A limiting plate rotatably matched with the locking pin hole is fixed to the end surface of the second end, and the outer peripheral wall of the limiting plate integrally protrudes outward to form a locking block.

Images