CN107140040A - A kind of traction assembly of semitrailer gooseneck - Google Patents

Abstract

A semi-trailer gooseneck traction assembly. The invention relates to the field of damping system, in particular to the improvement of the traction assembly with damping function used in the gooseneck of semi-trailer. A semi-trailer gooseneck traction assembly with exquisite structure, good connection stability, strong limit ability and convenient adjustment is proposed. The semi-trailer includes a balance beam and a gooseneck, and the gooseneck is floatingly connected above the balance beam; the traction assembly includes a horizontal limit assembly, and the horizontal limit assembly includes a pull rod and a pair of fixed seats. The fixing seats are respectively fixedly connected to the balance beam and the gooseneck, and the two ends of the pull rod are respectively hinged to the two fixing seats. A pair of side bosses are fixedly connected to both sides of the balance beam, and a pair of side frames are fixedly connected to both sides of the gooseneck. The side frame is provided with an opening facing the side of the balance beam. The side bosses Accommodated in the opening of the side frame. The invention has the characteristics of exquisite structure, good connection stability, strong position limiting ability and convenient adjustment.

Description

A semi-trailer gooseneck traction assembly

technical field

The invention relates to the field of damping system, in particular to the improvement of the traction assembly with damping function used for the gooseneck of a semi-trailer.

Background technique

In order to improve the stability of cargo transportation, the suspension system of the semi-trailer is usually adjusted from the leaf spring suspension to the air suspension. A typical example is the "One A kind of semi-trailer gooseneck traction pin with vibration damping function" and the Chinese invention patent with the application number "200820056424.X". However, when people actually use the above-mentioned technical solution, it is found that due to the impact of bumps and steering during the driving of the vehicle, there will be a relative displacement between the balance beam and the gooseneck either up and down or left and right, and once the relative movement between the two is excessive , it will seriously affect the structural stability of the vehicle and the stability of supporting the goods, and even directly cause damage to the vehicle, which will bring great potential safety hazards.

Contents of the invention

Aiming at the above problems, the present invention proposes a gooseneck traction assembly of a semi-trailer that is compact in structure, good in connection stability, strong in position limiting and convenient in adjustment.

The technical solution of the present invention is: the semi-trailer includes a balance beam and a gooseneck, and the gooseneck is floatingly connected above the balance beam;

The traction assembly includes a horizontal limit assembly, the horizontal limit assembly includes a pull rod and a pair of fixing seats, and the two fixing seats are fixedly connected to the balance beam and the gooseneck respectively, and the two ends of the pull rod are respectively hinged to two the fixed seat.

The pull rod includes a threaded rod, a stop bolt and a pair of hinged seats, the two hinged seats are respectively hinged with the two fixed seats, the ends on both sides of the threaded rod are connected to the hinged seats by threads, and the two hinged seats of the threaded rod The screw threads on the side ends have opposite directions of rotation, and the anti-rotation bolt passes through the hinge seat along the axial direction of the hinge seat, and the anti-rotation bolt is threadedly connected with the hinge seat and abuts against the threaded rod.

The pull rod includes a piston cylinder, a pair of pistons, and a pair of connecting rods. An opening valve is provided in the middle of the piston cylinder. A pair of the pistons are slidably connected in the piston cylinder, and a pair of the connecting rods are respectively fixedly connected to the two pistons. The side facing away from the center of the piston cylinder and the end of the connecting rod away from the piston cylinder are hinged to the fixed seat.

The traction assembly also includes a vertical limit assembly, the vertical limit assembly includes a pair of side bosses and a pair of side frames, and the side bosses and side frames are respectively fixedly connected to the balance beam or the gooseneck , one side of the side boss is accommodated in the side frame. :

A pair of side bosses are fixedly connected to both sides of the balance beam, a pair of side frames are fixedly connected to both sides of the gooseneck, and the side frame is provided with an opening facing the side of the balance beam, and the side bosses Accommodated in the opening of the side frame.

A pair of side bosses are fixedly connected under the two sides of the gooseneck, a pair of side frames are fixedly connected to both sides of the balance beam, and an opening is provided on the side of the side frame facing away from the balance beam. The side boss is accommodated at the opening of the side frame.

A front horizontal valve is also arranged on the top surface of the gooseneck.

The present invention has the following salient features: firstly, it greatly improves the structural stability of the vehicle and the stability of the cargo supporting, and improves the safety of the vehicle to a certain extent. Second, the service life of the front traction shaft and the overall structural strength of the semi-trailer are effectively extended, and the load of the semi-trailer is improved to a certain extent. Third, while providing stable traction, the semi-trailer as a whole maintains a high degree of structural stability and structural strength, making the driving stability of the vehicle better. The present invention has the characteristics of compact structure, good connection stability, strong position limiting ability and convenient adjustment.

Description of drawings

Figure 1 is a structural schematic diagram of the gooseneck in this case,

Fig. 2 is the structural representation of this case,

Figure 3 is a top view of Figure 2,

Figure 4 is a left side view of Figure 2,

Fig. 5 is the B-B direction sectional view of Fig. 2;

In the figure, 1 is the balance beam, 2 is the gooseneck, 20 is the front horizontal valve, 3 is the traction assembly, 31 is the front airbag, 32 is the front shock absorber, 33 is the front traction shaft, 34 is the horizontal limit assembly, 341 It is a pull rod, 3411 is a threaded rod, 3412 is a hinged seat, 342 is a fixed seat, 35 is a vertical limit assembly, 351 is a side boss, and 352 is a side frame.

detailed description

The present invention is shown in Fig. 1-5, and described semi-trailer comprises balance beam 1 and gooseneck 2, and described gooseneck 2 can be floatingly connected above balance beam 1, and described balance beam is connected with traction by the traction pin of its bottom. The vehicle is connected; the traction assembly 3 includes two front traction shafts 33, at least one front airbag 31 and at least one front shock absorber 32, and one side of the balance beam 1 is hinged on the gooseneck 2 through the two front traction shafts 33 and the other side is connected under the gooseneck through the front airbag, the front shock absorber is vertically arranged, and the two ends of the shock absorber are respectively hinged to the balance beam and the gooseneck;

The traction assembly includes a horizontal limit assembly 34, and the horizontal limit assembly 34 includes a length-adjustable pull rod 341 and a pair of fixing seats 342, and the two fixing seats 342 are fixedly connected to the balance beam 1 and the gooseneck 2 respectively. Above, the two ends of the pull rod 341 are respectively hinged to the two fixing seats 342 through the front limit shaft arranged along the length direction of the semi-trailer.

In this way, through the setting of the tie rod and the fixing seat, the balance beam can have the following outstanding features when pulling the gooseneck:

First, it can effectively limit the relative movement of the balance beam and the gooseneck in the horizontal direction, thereby effectively avoiding excessive relative movement between the two, and greatly improving the structural stability of the vehicle and the stability of supporting the cargo function, and to a certain extent, enhance the safety of the vehicle.

Second, when the vehicle is driving, especially when turning, the horizontal limit assembly can bear part of the load, especially the lateral load, and then the front traction bearing bears most of the load, thus effectively prolonging the service life of the front traction shaft and the overall stability of the semi-trailer. It can improve the structural strength of the semi-trailer and increase the load of the semi-trailer to a certain extent.

Third, when only one side of the vehicle is driving over a bumpy road section, the pull rod and the front traction shaft can work together to provide stable traction while maintaining a high degree of structural stability and structural strength of the semi-trailer as a whole, making the vehicle better driving stability.

The following is a representative discussion of the structure of the pull rod through two implementations:

Embodiment 1: The pull rod 341 includes a threaded rod 3411, a stop bolt and a pair of hinged seats 3412, the two hinged seats 3412 are respectively hinged with the two fixed seats 342, and the ends on both sides of the threaded rod 3411 are connected by threads In the hinge seat 3412, the screw threads on both ends of the threaded rod 3411 have the opposite direction of rotation. Connect and rest on the threaded rod. In this way, when the anti-rotation bolt is not installed, the screw rod and the hinge seat can be rotated conveniently relative to each other, so that the initial position of the gooseneck can be adjusted conveniently through the front airbag. After the gooseneck is adjusted to a horizontal state, it can be installed. The anti-rotation bolt is used to effectively limit the relative movement of the balance beam and the gooseneck in the horizontal direction.

Embodiment 2: the pull rod includes a piston cylinder, a pair of pistons and a pair of connecting rods, an opening valve is provided in the middle of the piston cylinder, a pair of the pistons are slidably connected in the piston cylinder, and a pair of the connecting rods are respectively fixed The end connected to the side of the two pistons facing away from the center of the piston cylinder and the end of the connecting rod away from the piston cylinder is hinged to the fixed seat. In this way, when the opening valve is in the open state, the piston can move conveniently relative to the piston cylinder, so that the initial position of the gooseneck can be adjusted conveniently through the front airbag. After the gooseneck is adjusted to a horizontal state, the opening valve can be opened It is in a closed state, thereby effectively restricting the relative movement of the balance beam and the gooseneck in the horizontal direction.

The traction assembly 3 also includes a vertical stop assembly 35, the vertical stop assembly 35 includes a pair of side bosses 351 and a pair of side frames 352, and the side bosses 351 and side frames 352 are respectively fixedly connected On the balance beam 1 or the gooseneck 2 , one side of the side boss 351 is accommodated in the side frame 352 . Therefore, when the balance beam and gooseneck have vertical relative movement due to road bumps, the maximum relative movement in the vertical direction of the balance beam and gooseneck is controlled through the cooperation of the side boss and the side frame, thereby effectively lifting the vehicle. Driving safety and structural reliability.

The difference in the setting positions of the side bosses and the side frames is described below through two embodiments:

Embodiment 1: A pair of side bosses 351 are fixedly connected to both sides of the balance beam 1, a pair of side frames 352 are fixedly connected to both sides of the gooseneck 2, and the side frames 352 face one side of the balance beam 1. The side is provided with a vertical opening, and the side boss 351 is accommodated in the opening of the side frame.

Embodiment 2: A pair of side bosses 351 are fixedly connected under the two sides of the gooseneck 2, a pair of side frames 352 are fixedly connected to both sides of the balance beam 1, and the side frames 352 face away from the balance beam One side of 1 is provided with a vertical opening, and the side boss 351 is accommodated at the vertical opening of the side frame.

A front horizontal valve 20 is also arranged on the top surface of the gooseneck 2 . In this way, when the initial position of the gooseneck is adjusted through the front airbag, it is convenient and straight to judge whether the top surface of the gooseneck is horizontal through the front level valve. In actual use, the initial position setting of the gooseneck can be automatically completed through the cooperation of the front horizontal valve and the control system.

Claims (7)

1. a kind of traction assembly of semitrailer gooseneck, the semitrailer includes equalizer bar and gooseneck, the relocatable company of gooseneck It is connected on above equalizer bar；Characterized in that,

The traction assembly includes Horizontal limiting component, and the Horizontal limiting component includes pull bar and a pair of fixed seats, described in two Fixed seat is respectively fixedly connected with equalizer bar and gooseneck, and the two ends of the pull bar are respectively articulated with fixed seat described in two.

2. the traction assembly of a kind of semitrailer gooseneck according to claim 1, it is characterised in that the pull bar includes screw thread Bar, rotation stop bolt and a pair of hinged seats, hinged seat described in two are hinged with two fixed seats respectively, and the both sides termination of the threaded rod leads to Cross and be threadedly coupled the hinged seat, the screw thread on the termination of the threaded rod both sides it is oppositely oriented, the rotation stop bolt is along being hinged The axial direction of seat wears the hinged seat, and the rotation stop bolt is threadedly coupled and is against on threaded rod with hinged seat.

3. the traction assembly of a kind of semitrailer gooseneck according to claim 1, it is characterised in that the pull bar includes piston Provided with valve is opened in the middle part of cylinder, a pair of pistons and a pair of links, the piston cylinder, piston is slidably connected at piston cylinder described in a pair In, connecting rod described in a pair be respectively fixedly connected with two-piston dorsad the side at piston cylinder center and connecting rod away from piston cylinder one End is hinged with fixed seat.

4. the traction assembly of a kind of semitrailer gooseneck according to claim 1, it is characterised in that the traction assembly is also wrapped Vertical limit assembly is included, the vertical limit assembly includes an offside boss and a pair of side frames, the side boss and body side frame It is respectively fixedly connected with equalizer bar or gooseneck, the side of the side boss is placed in body side frame.

5. the traction assembly of a kind of semitrailer gooseneck according to claim 4, it is characterised in that side boss described in a pair is consolidated Surely the both sides of equalizer bar are connected to, body side frame described in a pair is fixedly connected on the both sides of gooseneck, the body side frame is towards equalizer bar Side be provided with opening, the side boss is placed at the opening of the body side frame.

6. the traction assembly of a kind of semitrailer gooseneck according to claim 4, it is characterised in that side boss described in a pair is consolidated Surely the lower section of the both sides of gooseneck is connected to, body side frame described in a pair is fixedly connected on the both sides of equalizer bar, and the body side frame is dorsad The side of equalizer bar is provided with opening, and the side boss is placed at the opening of the body side frame.

7. the traction assembly of a kind of semitrailer gooseneck according to claim 1, it is characterised in that on the top surface of the gooseneck It is additionally provided with preceding horizontal valve.