Semitrailer tractor

Abstract

The utility model discloses a semitrailer tractor and belongs to the technical field of semitrailers, the semitrailer tractor comprises a first connecting seat and a second connecting seat corresponding to the first connecting seat, the corresponding surfaces of the first connecting seat and the second connecting seat are fixedly connected with sleeve shells, and the sleeve shells are fixedly connected with the first connecting seat and the second connecting seat. Sliding grooves are symmetrically formed in the axial position of the inner wall of the sleeve shell, a connector is movably connected to the end of the sleeve shell, and a shaft head is rotationally connected to the end, away from the sleeve shell, of the connector through a bearing. The movable end of the damping rod is compressed in a matched mode, energy transmission caused by vibration, impact or other movement modes is reduced, and therefore the energy absorption effect is improved, the situation that the connector jumps left and right due to resilience force of the spring is avoided, the tractor has the good buffering effect, and damage caused by too large braking impact force is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, and more particularly to a semi-trailer tractor. Background Art

[0002] A semitrailer is a trailer with its axle positioned behind the vehicle's center of gravity and equipped with a hitch that transmits horizontal and vertical forces to the tractor. Semitrailers are typically three-axled and come in a variety of styles, including 11-meter sidecars, 13-meter sidecars, and low-bed trailers. A heavy-duty transport vehicle is connected to the semitrailer's head via a towing pin, while the ball hitch is the key component connecting the power unit and the tractor unit.

[0003] The existing patent is a semi-trailer ball head puller, and the patent authorization announcement number is CN220785952U. A fastening mechanism is provided. During use, the round block is limited by the clamping block and the clamping groove, thereby preventing the connection from loosening when the semi-trailer is driving, ensuring the stability of the semi-trailer ball head puller during use, and having good practicality.

[0004] However, in patent authorization announcement No. CN220785952U, the sphere is placed in the Y-shaped seat, and the two fixing blocks are fixed at the top and bottom of the Y-shaped seat, and the limit blocks are passed through the through holes into the corresponding semicircular grooves. After the placement is completed, the pull rings on both sides are pulled to make the card blocks leave the card slots. At this time, the round block can be rotated, and the rotation of the round block drives the threaded rod to rotate until the round block stops when it can no longer rotate. Since the tractor is not provided with a buffer mechanism, the huge impact force generated during the braking process of the trailer will cause the connecting structure of the tractor to deform, which can easily cause damage to the tractor. Therefore, we propose a semi-trailer tractor to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a semi-trailer tractor, which can use the elastic force of the spring to effectively buffer and absorb the impact force generated by the trailer during braking. The movable end of the damping rod is compressed to reduce the energy transfer caused by vibration, impact or other forms of movement, thereby improving the energy absorption effect and avoiding the situation where the connector jumps left and right due to the rebound force of the spring, so that the tractor has a good buffering effect and avoids damage due to excessive braking impact force.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the present invention adopts the following technical solutions.

[0009] A semi-trailer tractor comprises a first connecting seat and a second connecting seat corresponding to the first connecting seat, wherein the surfaces corresponding to the first connecting seat and the second connecting seat are fixedly connected to a sleeve, and the inner wall of the sleeve is symmetrically provided with a sliding groove in an axial position;

[0010] The end portion of the sleeve is movably connected to a connector, and the end of the connector away from the sleeve is rotatably connected to a shaft head through a bearing, and the middle portion of the shaft head corresponding to the first connecting seat is fixedly connected to a connecting block, and the shaft head corresponding to the second connecting seat passes through the connecting block and is rotatably connected, and the connecting block is rotatably connected to the shaft head;

[0011] A stopper located inside the housing is integrally formed on one end of the connector away from the shaft head, and a slider slidably connected to the slide groove is fixedly connected to the outer wall of the stopper;

[0012] A spring and a damping rod are respectively installed on the inner side of the sleeve.

[0013] Furthermore, a reinforcing rib in a right-angled triangle structure is fixedly connected to the outer side of the shell, and a plurality of the reinforcing ribs are provided at radial positions of the shell.

[0014] Furthermore, a bearing is installed at the portion where the shaft head is combined with the connecting block.

[0015] Furthermore, the axis lines between the two shaft heads are perpendicular to each other.

[0016] Furthermore, the port portion of the housing is fixedly connected to a limiting portion, and the limiting portion abuts against the stopper.

[0017] Furthermore, one end of the spring is connected to the inner end wall of the housing, and the other end of the spring is connected to the stopper.

[0018] Furthermore, one end of the damping rod is fixedly connected to the inner end wall of the housing, and the movable end of the damping rod is connected to the stop block.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) In this solution, when the trailer is in emergency braking, the slider provided on the outer wall of the block slides in conjunction with the slide groove provided on the inner wall of the housing, thereby compressing the spring and contracting the movable end of the damping rod. The elastic force of the spring can effectively buffer and absorb the impact force generated by the trailer during braking. The movable end of the damping rod is compressed, reducing the energy transfer caused by vibration, impact or other forms of movement, thereby improving the energy absorption effect and avoiding the situation where the connector jumps left and right due to the rebound force of the spring, so that the tractor has a good buffering effect and avoids damage due to excessive braking impact.

[0022] (2) This solution can enhance the strength, rigidity and torsional resistance of the shell by setting reinforcing ribs, and can overcome the distortion of the product caused by the uneven stress due to the difference in wall thickness of the shell, thereby increasing the strength of the joint surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic structural diagram of the first connecting seat of the present utility model;

[0025] Figure 3 This is a front view schematic diagram of the casing of the present utility model;

[0026] Figure 4 This is a schematic cross-sectional view of the AA portion of the casing of the present invention;

[0027] Figure 5 This is a schematic structural diagram of the second connecting seat of the present invention.

[0028] Description of the numbers in the figure:

[0029] 1. First connecting seat; 2. Second connecting seat; 3. Housing; 4. Connecting head; 5. Shaft head; 6. Connecting block; 7. Slider; 8. Slide groove; 9. Spring; 10. Damping rod; 11. Reinforcement rib; 12. Stop block. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Example:

[0032] See also Figure 1-5A semi-trailer tractor comprises a first connecting seat 1 and a second connecting seat 2 corresponding to the first connecting seat 1. The corresponding surfaces of the first connecting seat 1 and the second connecting seat 2 are fixedly connected to a sleeve 3, and the inner wall of the sleeve 3 is symmetrically provided with a slide groove 8 in the axial position;

[0033] The end of the housing 3 is movably connected to a connector 4, and the end of the connector 4 away from the housing 3 is rotatably connected to a shaft head 5 through a bearing. The middle of the shaft head 5 corresponding to the first connecting seat 1 is fixedly connected to a connecting block 6, and the shaft head 5 corresponding to the second connecting seat 2 passes through the connecting block 6 and is rotatably connected, and the connecting block 6 is rotatably connected to the shaft head 5;

[0034] The end of the connector 4 away from the shaft head 5 is integrally formed with a stopper 12 located inside the housing 3, and the outer wall of the stopper 12 is fixedly connected to a slider 7 that is slidably connected to the slide groove 8;

[0035] The inner side of the housing 3 is respectively installed with a spring 9 and a damping rod 10;

[0036] It should be noted that when the semi-trailer tractor is in use, the first connecting seat 1 is connected to the front of the vehicle, and the second connecting seat 2 is connected to the trailer, and the two connecting heads 4 are connected by rotation through the shaft head 5 installed between the two connecting heads, so that the trailer can rotate in any direction. When the trailer is in the process of emergency braking, the slider 7 provided on the outer wall of the block 12 cooperates with the slide groove 8 provided on the inner wall of the shell 3 to slide, and then the spring 9 is compressed while the movable end of the damping rod 10 is contracted. The elastic force of the spring 9 can effectively buffer and absorb the impact force generated by the trailer during braking. The movable end of the damping rod 10 is compressed to reduce the energy transfer caused by vibration, impact or other forms of movement, thereby improving the energy absorption effect and avoiding the situation where the connector 4 jumps left and right due to the rebound force of the spring 9, so that the tractor has a good buffering effect and avoids damage due to excessive braking impact force.

[0037] like Figure 1 As shown, the outer side of the casing 3 is fixedly connected with a reinforcing rib 11 arranged in a right-angled triangle structure, and a plurality of reinforcing ribs 11 are arranged in the radial position of the casing 3;

[0038] It should be noted that the provision of the reinforcing ribs 1 can enhance the strength, rigidity and torsional resistance of the casing 3 , thereby overcoming the distortion of the product caused by the uneven stress due to the difference in wall thickness of the casing 3 , thereby increasing the strength of the joint surface.

[0039] like Figure 1 、 Figure 2 、 Figure 5 As shown, a bearing is installed at the joint between the shaft head 5 and the connecting block 6, and the axis lines between the two shaft heads 5 are perpendicular to each other;

[0040] It should be noted that the friction between the shaft head 5 and the connecting block 6 is reduced, the rotation accuracy of the shaft head 5 is guaranteed, and the universal rotation of the tractor is achieved.

[0041] like Figure 4 As shown, the end portion of the housing 3 is fixedly connected to the limiting portion, and the limiting portion abuts against the stopper 12;

[0042] It should be noted that, by providing the limiting portion so that the stopper 12 abuts against the limiting portion, the connector 4 can be effectively prevented from being separated from the housing 3 .

[0043] like Figure 4 As shown, one end of the spring 9 is connected to the inner end wall of the housing 3, and the other end of the spring 9 is connected to the stopper 12, one end of the damping rod 10 is fixedly connected to the inner end wall of the housing 3, and the movable end of the damping rod 10 is connected to the stopper 12;

[0044] It should be noted that the elastic force of the spring 9 can effectively buffer and absorb the impact force generated by the trailer during braking. The movable end of the damping rod 10 is compressed to reduce the energy transfer caused by vibration, impact or other forms of movement, thereby improving the energy absorption effect and avoiding the rebound force of the spring 9 causing the connector 4 to jump left and right, so that the tractor has a good buffering effect.

[0045] During use: connect the first connecting seat 1 to the front of the vehicle, connect the second connecting seat 2 to the hanging car, and connect them by rotating the shaft head 5 installed between the two connecting heads 4, so that the hanging car can be rotated in any direction. When the trailer is in the process of emergency braking, the slider 7 provided on the outer wall of the block 12 cooperates with the slide groove 8 provided on the inner wall of the shell 3 to slide, and then the spring 9 is compressed and the movable end of the damping rod 10 is contracted. The elastic force of the spring 9 can effectively buffer and absorb the impact force generated by the trailer during braking. The movable end of the damping rod 10 is compressed to reduce the energy transfer caused by vibration, impact or other forms of movement, thereby improving the energy absorption effect and avoiding the situation where the connector 4 jumps left and right due to the rebound force of the spring 9, so that the tractor has a good buffering effect.

[0046] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A semitrailer tractor, comprising a first connecting seat (1) and a second connecting seat (2) corresponding to the first connecting seat (1), characterized in that: The surfaces corresponding to the first connecting seat (1) and the second connecting seat (2) are both fixedly connected with a casing (3), and the inner wall of the casing (3) is symmetrically provided with sliding grooves (8) at axial positions; The end of the sleeve (3) is movably connected to a connecting head (4); the end of the connecting head (4) away from the sleeve (3) is rotatably connected to a shaft head (5) via a bearing; the middle of the shaft head (5) corresponding to the first connecting seat (1) is fixedly connected to a connecting block (6); the shaft head (5) corresponding to the second connecting seat (2) passes through the connecting block (6) and is rotatably connected, and the connecting block (6) is rotatably connected to the shaft head (5); A stopper (12) located inside the sleeve (3) is integrally formed at one end of the connector (4) away from the shaft head (5), and an outer wall of the stopper (12) is fixedly connected to a slider (7) slidably connected to the slide groove (8); A spring (9) and a damping rod (10) are respectively installed on the inner side of the casing (3).

2. A semitrailer tractor according to claim 1, characterized in that: A reinforcing rib (11) arranged in a right-angled triangle structure is fixedly connected to the outer side of the casing (3), and a plurality of the reinforcing ribs (11) are arranged at radial positions of the casing (3).

3. A semitrailer tractor according to claim 1, characterized in that: A bearing is installed at the portion where the shaft head (5) is combined with the connecting block (6).

4. A semitrailer tractor according to claim 1, characterized in that: The axis lines between the two shaft heads (5) are perpendicular to each other.

5. A semitrailer tractor according to claim 1, characterized in that: The end portion of the sleeve (3) is fixedly connected to a limiting portion, and the limiting portion abuts against the stopper (12).

6. A semitrailer tractor according to claim 1, characterized in that: One end of the spring (9) is connected to the inner end wall of the casing (3), and the other end of the spring (9) is connected to the stopper (12).

7. A semitrailer tractor according to claim 1, characterized in that: One end of the damping rod (10) is fixedly connected to the inner end wall of the casing (3), and the movable end of the damping rod (10) is connected to the stopper (12).

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