Hook for connecting tractor trailer
By introducing auxiliary support and spring devices in the trailer hitch, the problems of bogie shaking and heavy shock absorber load are solved, achieving a more stable and safe trailer hitch connection.
Patent Information
- Application Number
- CN202422713014.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-07
AI Technical Summary
During long-term use, the existing trailer steering device is prone to shaking when traveling on bumpy roads, and the frame is subjected to a huge load, posing a safety hazard, especially when the shock absorber is overloaded.
Four sets of auxiliary support devices and four sets of spring devices are introduced into the trailer hook. The motor drives the coupling to rotate the movable shaft. Combined with the decompression spring and the fixing rod of the air spring, it provides cushioning and stability, reduces the shock absorber load, and increases the stability of the air spring.
It effectively reduces the long-term load on the shock absorber, improves safety, extends the service life of the device, and improves the stability and safety of the trailer hitch connection.
Smart Images
Figure CN223443541U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the trailer traction technical field, specifically a kind of connecting tractor trailer drawbar. BACKGROUND
[0002] The full name of trailer is road wrecker, also called tractor, road rescue vehicle, towed vehicle, with hoisting, pulling and lifting traction and other functions, wrecker is mainly used for road fault vehicle, city illegal vehicle and rescue, wrecker is divided into tow-lift connected type, tow-lift separation type, multifunctional wrecker, hydraulic automatic clamping type according to category.
[0003] In the prior art, trailer is usually connected with hook during use, and needs to be cooperated with mechanical equipment, and steering equipment is usually used for cooperation, the application range of steering equipment is relatively wide, trailer steering device is usually composed of rack, motor, runner, rotating shaft, air spring, shock absorber and anti-lateral torsion rod, the runner is rotated by motor, thereby rotating shaft is rotated, air spring is cooperated, the towing operation of trailer hook is completed, thereby the connection of trailer hook is completed.
[0004] In the prior art, the trailer steering device on the market is usually operated by the motor installed on the bottom side, the runner is rotated by motor, thereby rotating shaft is rotated, air spring is cooperated, the towing operation of trailer hook is completed, thereby the connection of trailer hook is completed, but in the long trailer hook connection process, the bogie will sway when encountering bumpy section, the rack will bear huge load, the shock absorber at the end bears large load in long operation, and there is certain safety hazard, therefore, a kind of connecting tractor trailer drawbar is proposed for the above problems. UTILITY MODEL CONTENTS
[0005] In order to make up for the deficiency of prior art, in view of the problems existing in prior art, the utility model provides a kind of connecting tractor trailer drawbar.
[0006] The utility model discloses a technical scheme that solves its technical problem adopts is a kind of connecting tractor trailer drawbar, including rack, the end portion below of rack is equipped with four groups of axle box, the middle part of axle box is equipped with notch, movable pivot is installed in the notch of axle box, the circumferential surface of movable pivot is equipped with two groups of runner, the end portion of axle box is equipped with fixed clamping groove, the middle part of fixed clamping groove is equipped with shock absorber, the middle part of shock absorber and axle box is equipped with pressure relief spring, the middle part of rack is equipped with air spring, the middle part of air spring is equipped with upper roof, the middle part of air spring is equipped with hollow tube, the bottom of upper roof is equipped with fixed rod, cooperate by air spring, complete the traction operation of trailer drawbar, to complete the connection of trailer drawbar.
[0007] Preferably, the middle inside of the rack is equipped with two groups of connecting shafts, the middle of the two groups of connecting shafts is equipped with bridge frame, four groups of auxiliary supporting devices are additionally installed on the side of shock absorber, and the safety is improved.
[0008] Preferably, the circumferential surface of the two groups of connecting shafts is equipped with two groups of motor mounting plates, the other end of the motor mounting plate is equipped with motor, the bottom four groups of spring devices provide buffering property, and the load of shock absorber in long-time operation is reduced.
[0009] Preferably, the end of the rack is equipped with two groups of movable connecting rods, the end shaft of motor is equipped with shaft coupling, and the other end middle part of axle box is equipped with cross bar.
[0010] Preferably, the middle of the two groups of bridge frames is equipped with traction seat, the middle of the traction seat is equipped with tractor, the end of the tractor is equipped with bolt, and two groups of fixed rod auxiliary connections are additionally installed on the circumferential surface of air spring, so that the stability of middle air spring is increased.
[0011] Preferably, the outside of the rack is equipped with two groups of rotating rods, the end of the rotating rod is equipped with connecting seat, the middle of the connecting seat is equipped with notch, and side twist rod is installed in the notch of connecting seat, the bottom four groups of spring devices provide buffering property, the stability of middle air spring is increased, and the service life of device is prolonged.
[0012] The utility model has the advantages that:
[0013] The utility model provides a kind of connecting tractor trailer coupling, to solve in long time trailer coupling connection process, bogie when encountering bumpy section, sometimes it will sway, rack will bear huge load, the shock absorber load of end portion is larger in long time operation, and there is certain security risk, by installing four groups of auxiliary support device in the side of shock absorber, by the buffering property of four groups of spring device of bottom, reduce the load of shock absorber in long time operation, improve security, while installing two groups of fixed rod auxiliary connection on the surface of air spring four around, increase the stability of middle air spring, prolong the life of device. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be simply introduced below, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0015] Figure 1 It is the isometric view of whole;
[0016] Figure 2 It is the isometric view of support structure;
[0017] Figure 3 It is the isometric view of transmission structure;
[0018] Figure 4 It is the isometric view of internal structure;
[0019] Figure 5 It is the isometric view of top structure;
[0020] In the drawing: 1, air spring;2, hollow pipe;3, fixed rod;4, upper roof;5, motor mounting plate;6, bridge frame;7, rack;8, movable connecting rod;9, connecting shaft;10, cross bar;11, motor;12, shaft coupling;13, runner;14, axle box;15, pressure relief spring;16, shock absorber;17, movable rotating shaft;18, bolt;19, tractor;20, traction seat;22, anti-lateral torsion rod;23, connecting seat;24, rotating rod;25, fixed clamping groove. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0022] Please refer to Figures 1-5 As shown in FIG. 1, a connecting tractor trailer hook includes a rack 7, four groups of axle boxes 14 are installed below the ends of the rack 7, notches are formed in the middle portions of the axle boxes 14, movable shafts 17 are installed in the notches of the axle boxes 14, two groups of rotating wheels 13 are installed on the circumferential surfaces of the movable shafts 17, fixed clamping grooves 25 are assembled at the ends of the axle boxes 14, shock absorbers 16 are installed in the middle portions of the fixed clamping grooves 25, pressure relief springs 15 are assembled between the shock absorbers 16 and the middle portions of the axle boxes 14, air springs 1 are assembled in the middle portions of the rack 7, upper top plates 4 are installed in the middle portions of the air springs 1, hollow pipes 2 are assembled in the middle portions of the air springs 1, and fixed rods 3 are installed at the bottoms of the upper top plates 4.
[0023] In the prior art, the trailer steering device on the market is usually operated by a motor 11 installed on the bottom, the motor 11 drives the rotating wheels 13 to rotate, thereby driving the rotating shaft to rotate, the air springs 1 are matched to complete the traction operation of the trailer hook, thereby completing the connection of the trailer hook, but in the long trailer hook connection process, the bogie may shake when encountering a bumpy section, the rack 7 may bear a large load, the shock absorber 16 at the end bears a large load in the long operation, and there is a certain safety hazard, therefore, the connecting tractor trailer hook is provided to solve the above problems, the bottom motor 11 is rotated, the motor 11 drives the shaft coupling 12 to rotate, thereby driving the movable shaft 17 to rotate, when the movable shaft 17 rotates, the rotating wheels 13 installed on the surface of the movable shaft 17 rotate synchronously.
[0024] Further, the middle part of the frame 7 is provided with two groups of connecting shafts 9, the middle part of the two groups of connecting shafts 9 is provided with a bridge frame 6, the circumferential surface of the two groups of connecting shafts 9 is provided with two groups of motor mounting plates 5, the other end of the motor mounting plate 5 is provided with a motor 11, the end of the frame 7 is provided with two groups of movable connecting rods 8, the end of the motor 11 is provided with a shaft coupling 12, the other end of the shaft box 14 is provided with a cross rod 10, the middle part of the two groups of bridge frames 6 is provided with a traction seat 20, the middle part of the traction seat 20 is provided with a traction device 19, the end of the traction device 19 is provided with a latch 18, the outer side of the frame 7 is provided with two groups of rotating rods 24, the end of the rotating rod 24 is provided with a connecting seat 23, the middle part of the connecting seat 23 is provided with a notch, and the anti-lateral torsion rod 22 is installed in the notch of the connecting seat 23.
[0025] When the trailer hook is connected, the air spring 1 at the top transmits the pressure received to the surface of the frame 7 through the fixed rod 3, the four groups of shock absorbers 16 installed below the frame 7 are buffered, and the pressure relief spring 15 installed in the shaft box 14 is cooperated to stabilize the operation and reduce the impact on the shock absorber 16, so as to complete the whole trailer hook traction operation.
[0026] The working principle is that in the prior art, the trailer steering device on the market usually operates by the motor 11 installed on the bottom side, the rotating rod 13 is driven to rotate by the motor 11, the rotating shaft is driven to rotate, the air spring 1 is cooperated to complete the connection of the trailer hook, but in the long-time trailer hook connection process, the bogie may shake when encountering a bumpy section, the frame 7 bears a large load, the shock absorber 16 at the end bears a large load in the long-time operation, and there is a certain safety hazard, therefore, the connection of the trailer hook is proposed, in the trailer hook connection process, the bottom motor 11 is rotated, the shaft coupling 12 is driven to rotate by the motor 11, the movable rotating shaft 17 is driven to rotate, the rotating rod 13 installed on the surface of the movable rotating shaft 17 is synchronously rotated, when the trailer hook is connected, the air spring 1 at the top transmits the pressure received to the surface of the frame 7 through the fixed rod 3, the four groups of shock absorbers 16 installed below the frame 7 are buffered, and the pressure relief spring 15 installed in the shaft box 14 is cooperated to stabilize the operation and reduce the impact on the shock absorber 16, so as to complete the whole trailer hook traction operation.
[0027] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0028] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.
Claims
1. A hook for connecting a tractor trailer, characterized by: The invention comprises a frame (7), four groups of axle boxes (14) are installed below the end of the frame (7), a slot is opened in the middle of the axle box (14), a movable shaft (17) is installed in the slot of the axle box (14), two groups of wheels (13) are installed on the circumferential surface of the movable shaft (17), a fixed slot (25) is installed at the end of the axle box (14), a shock absorber (16) is installed in the middle of the fixed slot (25), a pressure relief spring (15) is installed between the shock absorber (16) and the middle of the axle box (14), an air spring (1) is installed in the middle of the air spring (1), an upper top plate (4) is installed in the middle of the air spring (1), a hollow tube (2) is installed in the middle of the air spring (1), and a fixing rod (3) is installed at the bottom of the upper top plate (4).
2. The tractor trailer hook according to claim 1, characterized in that: Two groups of connecting shafts (9) are installed on the inner side of the middle of the frame (7), and a bridge frame (6) is installed in the middle of the two groups of connecting shafts (9).
3. The tractor trailer hook according to claim 2, characterized in that: Two sets of motor mounting plates (5) are mounted on the circumferential surfaces of the two sets of connecting shafts (9), and the other end piles of the motor mounting plates (5) are equipped with motors (11).
4. The tractor trailer hook according to claim 1, characterized in that: Two sets of movable connecting rods (8) are installed at the end of the frame (7), the end shaft of the motor (11) is equipped with a coupling (12), and the middle part of the other end of the axle box (14) is equipped with a cross bar (10).
5. The tractor trailer hook according to claim 2, characterized in that: A traction seat (20) is installed in the middle of the two groups of bridging frames (6), a traction device (19) is installed in the middle of the traction seat (20), and a latch (18) is installed at the end of the traction device (19).
6. The tractor trailer hook according to claim 1, characterized in that: Two groups of rotating rods (24) are installed on the outside of the frame (7), and the ends of the rotating rods (24) are equipped with connecting seats (23). A notch is opened in the middle of the connecting seat (23), and the anti-lateral torsion rod (22) is installed in the notch of the connecting seat (23).