CN113978190B - Four-freedom-degree adjustable multifunctional traction device - Google Patents
Four-freedom-degree adjustable multifunctional traction device Download PDFInfo
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- CN113978190B CN113978190B CN202111593523.8A CN202111593523A CN113978190B CN 113978190 B CN113978190 B CN 113978190B CN 202111593523 A CN202111593523 A CN 202111593523A CN 113978190 B CN113978190 B CN 113978190B
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- driving piece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/42—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable
- B60D1/46—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically
- B60D1/465—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically comprising a lifting mechanism, e.g. for coupling while lifting
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Abstract
The invention discloses a multifunctional traction device with adjustable four degrees of freedom, which comprises: the towing device comprises a hanging plate arranged at the rear part of a trailer, a towing hook used for connecting a vehicle to be towed, a rotating bracket used for installing the towing hook, a lower rotating seat arranged at the lower part of the hanging plate, an upper rotating seat arranged at the upper part of the hanging plate, a lifting driving piece used for driving the towing hook to move up and down, a connecting piece used for connecting the upper rotating seat and the lower rotating seat and a control device; the swivel mount is Z type support, draws the hook and locates the left end on Z type support upper portion, and the one end of lift driving piece is articulated with the right-hand member on Z type support upper portion, and the other end and the last swivel mount of lift driving piece are connected, and the right-hand member of Z type support lower part is connected with lower swivel mount, and the slope of lift driving piece sets up, and Z type support upper portion is the seesaw structure, and the lift driving piece is connected with controlling means. The device can realize the lifting traction operation of the tractor to the chassis of the steering wheel.
Description
Technical Field
The invention relates to the technical field of tractors, in particular to a four-degree-of-freedom adjustable multifunctional traction device.
Background
Among the prior art, passenger train and truck need transport the chassis of having assembled in the factory when producing, because the chassis front wheel can rotate, when transporting, need lift up the front axle, however, the draw hook of present common tractor can't lift the operation, also can't realize the operation of pulling on the directive wheel chassis, can only change the draw hook of co-altitude not when meetting the trailer of co-altitude, lead to the operating efficiency low.
In summary, how to implement the lifting and towing operation of the tractor with the chassis of the steering wheel is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a four-degree-of-freedom adjustable multifunctional traction device, which can realize the lifting traction operation of a tractor with a chassis of a steering wheel.
In order to achieve the above purpose, the invention provides the following technical scheme:
a four-degree-of-freedom adjustable multifunctional traction device comprises: the towing device comprises a hanging plate arranged at the rear part of a trailer, a towing hook used for connecting a vehicle to be towed, a rotating bracket used for mounting the towing hook, a lower rotary seat arranged at the lower part of the hanging plate, an upper rotary seat arranged at the upper part of the hanging plate, a lifting driving piece used for driving the towing hook to move up and down and a control device;
the utility model discloses a Z type support, including swivel mount, draw hook, lifting driving piece, control device, lifting driving piece, control device, swivel mount, lifting driving piece, lifting and lifting driving piece.
Preferably, the lateral movement device further comprises a lateral movement rotating seat arranged at the rear part of the trailer, a connecting piece used for connecting the upper rotating seat with the lower rotating seat and a lateral movement driving piece used for driving the towing hook to move left and right, one end of the lateral movement driving piece is hinged with the left end side part of the lower part of the Z-shaped support, the other end of the lateral movement driving piece is connected with the lateral movement rotating seat, and the lateral movement driving piece is connected with the control device.
Preferably, the connecting piece is a pin shaft with threaded holes at two ends, and the upper swivel base and the lower swivel base are correspondingly provided with through holes for penetrating through the pin shaft.
Preferably, the two ends of the pin shaft are provided with oil ducts for adding lubricating oil.
Preferably, the lifting driving member is a lifting oil cylinder, the lifting oil cylinder is a double-acting oil cylinder, one end of the lifting oil cylinder is a unthreaded hole connected with the upper rotating base, and the other end of the lifting oil cylinder is a joint bearing connected with the Z-shaped support.
Preferably, the side-shifting driving member is a side-shifting oil cylinder, the side-shifting oil cylinder is a double-acting oil cylinder, one end of the side-shifting oil cylinder is a unthreaded hole connected with the side-shifting rotating base, and the other end of the side-shifting oil cylinder is a joint bearing connected with the lower rotating base.
Preferably, the control handle of the control device is arranged behind the seat of the trailer.
Preferably, the upper end of towing hook be equipped with can center on Z type support pivoted cylinder spare, cover are located the stopper of cylinder spare peripheral part and be used for locking the cylinder spare with the fixed pin of stopper, Z type support is equipped with and passes the mounting hole of cylinder spare, the bottom of stopper with the top of towing hook all with Z type support butt.
Preferably, the traction hook is located between the upper swivel base and the lower swivel base, the traction hook is of a curved structure, and a force bearing point of the curved structure is arranged close to a center line of the cylindrical member.
Preferably, the traction hook and the rotating bracket are both provided with mounting plates for horizontally mounting an extension spring, and the extension spring is used for keeping the traction hook at the middle position of the hanging plate under the condition of no load.
When the four-degree-of-freedom adjustable multifunctional traction device provided by the invention is used, a hanging plate can be arranged at the rear part of a trailer, an upper rotary seat and a lower rotary seat are respectively arranged at the upper part and the lower part of the hanging plate, a traction hook is arranged at the left end of the upper part of a Z-shaped support, the telescopic end of a lifting driving piece is hinged with the right end of the upper part of the Z-shaped support, the other end of the lifting driving piece is connected with the upper rotary seat, and the right end of the lower part of the Z-shaped support is connected with the lower rotary seat, so that the fixed installation operation of the Z-shaped support, the traction hook and the lifting driving piece is realized. And the control device can control the lifting driving piece to run, when the lifting driving piece performs telescopic motion, the right end of the upper part of the Z-shaped support can ascend or descend, and the upper part of the Z-shaped support is of a seesaw structure, so that the traction hook at the left end of the upper part of the Z-shaped support can be driven to descend or ascend at the same time, the lifting traction operation of the traction hook on the chassis of the steering wheel is realized, and the steering shaft of the chassis of the steering wheel is lifted off so as to be conveniently pulled.
In conclusion, the four-degree-of-freedom adjustable multifunctional traction device provided by the invention can realize the lifting traction operation of the tractor to the chassis of the steering wheel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a four-degree-of-freedom adjustable multifunctional traction device provided by the present invention;
FIG. 2 is a schematic structural view of the hanging plate, the upper swivel mount and the lower swivel mount;
FIG. 3 is a schematic view of the connection between the hanging plate and the towing hook;
FIG. 4 is a schematic structural view of a connector;
FIG. 5 is a schematic view of the upper rotary base;
FIG. 6 is a schematic view of the structure of the lower rotary base;
FIG. 7 is a schematic view of the connecting pin;
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a schematic structural view of a double acting cylinder;
FIG. 10 is a schematic view of a rotary stand;
FIG. 11 is a schematic view of the construction of a towing hook;
FIG. 12 is a schematic view of a retainer pin;
FIG. 13 is a schematic view of the bending moment at the tow hook;
FIG. 14 is a schematic view of the trailer in connection with a vehicle to be towed;
FIG. 15 is a schematic view of the trailer in reverse adjustment;
fig. 16 is a schematic view of the trailer in a situation where the pushing direction and the moving direction are consistent.
In fig. 1-16:
1 is a trailer, 2 is a hanging plate, 3 is a vehicle to be towed, 4 is a towing hook, 5 is a rotating bracket, 6 is a lower rotating seat, 7 is a side shifting rotating seat, 8 is a connecting piece, 9 is a side shifting driving piece, 10 is a threaded hole, 11 is a through hole, 12 is an oil channel, 13 is a smooth hole, 14 is a joint bearing, 15 is a control handle, 16 is a cylindrical piece, 17 is a limiting block, 18 is a fixing pin, 19 is a mounting hole, 20 is a tension spring, 21 is a mounting plate, 22 is a mounting sheet, 23 is a spring washer, 24 is a bolt, 25 is a hinge point, 26 is a round hole, 27 is a connecting pin, 28 is a first hole, 29 is an ear plate, 30 is a side hole, 31 is a through hole, 32 is a bearing hole, 33 is a second hole, 34 is an oil groove, 35 is a limiting hole, 36 is a step groove, 37 is a clamp spring groove, 38 is a clamp spring, 39 is a step surface, 40 is a fixing hole, 41 is an oil cup, 42 is an upper rotating seat, 43 is a lifting driving piece, 44 is a gasket, F1 is a lifting load, L1 is a lifting moment arm, F2 is a traction load, and L2 is a traction moment arm.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a four-degree-of-freedom adjustable multifunctional traction device which can realize the lifting traction operation of a tractor to a chassis of a steering wheel.
Please refer to fig. 1 to fig. 16.
This embodiment provides a four-degree-of-freedom adjustable multifunctional traction device, including: the towing device comprises a hanging plate 2 arranged at the rear part of a trailer 1, a towing hook 4 used for connecting a vehicle 3 to be towed, a rotating bracket 5 used for installing the towing hook 4, a lower rotating seat 6 arranged at the lower part of the hanging plate 2, an upper rotating seat 42 arranged at the upper part of the hanging plate 2, a lifting driving piece 43 used for driving the towing hook 4 to move up and down and a control device; the rotating bracket 5 is a Z-shaped bracket, the traction hook 4 is arranged at the left end of the upper part of the Z-shaped bracket, one end of the lifting driving piece 43 is hinged with the right end of the upper part of the Z-shaped bracket, the other end of the lifting driving piece 43 is connected with the upper rotating seat 42, the right end of the lower part of the Z-shaped bracket is connected with the lower rotating seat 6, the lifting driving piece 43 is arranged obliquely, the upper part of the Z-shaped bracket is of a seesaw structure, and the lifting driving piece 43 is connected with the control device.
The hitch plate 2 may be fixed to the rear portion of the trailer 1 by means of a spring washer 23, a bolt 24, and the like. Can be on link plate 2 the level set up a plurality of installation pieces 22, down swivel mount 6 and last swivel mount 42 all can be connected with installation piece 22 contact through gasket 44 to effectively reduce swivel mount 6 or the area of contact of last swivel mount 42 and link plate 2 down, make rotatory resistance littleer, it is more smooth and easy rotatory, still can prevent down swivel mount 6 or last swivel mount 42 direct contact link plate 2 and excessive wear when rotatory. The upper part of the Z-shaped bracket is of a teeterboard structure, namely the left end and the right end of the upper part of the Z-shaped bracket can move around a fulcrum in a reverse direction, and the structure of the Z-shaped bracket is shown in figure 10.
Can be in the in-service use in-process, according to actual conditions and actual demand, confirm link plate 2, draw hook 4, swivel mount 5, lower swivel mount 6, upward swivel mount 42, lift driving piece 43 and controlling means's shape, structure, size, material, position etc.
When the four-degree-of-freedom adjustable multifunctional traction device provided by the invention is used, the hanging plate 2 can be arranged at the rear part of the trailer 1, the upper rotary seat 42 and the lower rotary seat 6 are respectively arranged at the upper part and the lower part of the hanging plate 2, the traction hook 4 is arranged at the left end of the upper part of the Z-shaped support, the telescopic end of the lifting driving piece 43 is hinged with the right end of the upper part of the Z-shaped support, the other end of the lifting driving piece 43 is connected with the upper rotary seat 42, and the right end of the lower part of the Z-shaped support is connected with the lower rotary seat 6, so that the fixed installation operation of the Z-shaped support, the traction hook 4 and the lifting driving piece 43 is realized. And then, the control device can control the operation of the lifting driving piece 43, when the lifting driving piece 43 performs telescopic motion, the right end of the upper part of the Z-shaped bracket can be lifted or descended, and the upper part of the Z-shaped bracket is of a seesaw structure, so that the traction hook 4 at the left end of the upper part of the Z-shaped bracket can be driven to be lifted or ascended at the same time, the lifting traction operation of the traction hook 4 on the chassis of the steering wheel is realized, and the steering shaft with the chassis of the steering wheel is lifted off the ground so as to be conveniently pulled.
In conclusion, the four-degree-of-freedom adjustable multifunctional traction device provided by the invention can realize the lifting traction operation of the tractor to the chassis of the steering wheel.
On the basis of the above embodiment, it is preferable that the trailer further includes a side shift rotating base 7 disposed at the rear part of the trailer 1, a connecting member 8 for connecting the upper rotating base 42 and the lower rotating base 6, and a side shift driving member 9 for driving the towing hook 4 to move left and right, one end of the side shift driving member 9 is hinged to the left end side part of the lower part of the Z-shaped bracket, the other end of the side shift driving member 9 is connected to the side shift rotating base 7, and the side shift driving member 9 is connected to the control device.
It should be noted that the connecting member 8 can make the lower swivel mount 6 and the upper swivel mount 42 rotate in a linkage manner, and when the side shift driving member 9 pushes the lower swivel mount 6 to move left and right, the upper swivel mount 42 can rotate in a linkage manner together with the connecting member 8, so that the lifting driving member 43 is not subjected to a radial force. The side-shift driving member 9 can control the towing hook 4 to move left and right, when the trailer 1 is reversed, the driver can operate the side-shift driving member 9 to adjust the relative positions of the two hinge points 25 (the connecting hinge point 25 of the towing hook 4 and the vehicle 3 to be towed, and the rotating hinge point 25 of the vehicle 3 to be towed) so that the moving direction of the trailer 1 is consistent with the thrust direction of the trailer 1, thereby improving the working efficiency, as shown in fig. 14 to 16, the arrow direction close to the position of the trailer 1 in the figure is the thrust direction of the trailer 1, the arrow close to the vehicle 3 to be towed is the moving direction of the trailer 1, and when the thrust direction is consistent with the moving direction, the vehicle can be towed quickly.
The shapes, structures, sizes, materials, positions and the like of the lateral movement rotating seat 7, the connecting piece 8 and the lateral movement driving piece 9 can be determined according to actual conditions and actual requirements in the actual application process.
Preferably, the connecting piece 8 is a pin shaft with threaded holes 10 at both ends, and the upper swivel base 42 and the lower swivel base 6 are correspondingly provided with through holes 11 for passing through the pin shaft.
It should be noted that, a round hole 26 for passing through the pin shaft may be provided on the mounting piece 22, and the pin shaft may pass through the round hole 26 at the top of the hanging plate 2, the through hole 11 of the upper swivel base 42, the round hole 26 at the bottom of the hanging plate 2, and the through hole 11 of the lower swivel base 6 in sequence. Since both ends of the pin shaft are provided with the screw holes 10, the spring washers 23 can be cushioned by using the bolts 24, and then the bolts 24 are inserted through the screw holes 10 of the side portions of the pin shaft so that the bolts 24 are screwed into the screw holes 10 of both ends of the pin shaft. The pin structure allows the lower rotary base 6 and the upper rotary base 42 to rotate in a linked manner, and when the side movement driving member 9 pushes the side portion of the lower rotary base 6 to rotate, the upper rotary base 42 can rotate in a linked manner together by virtue of the structure, so that the lifting driving member 43 is not subjected to a radial force.
Preferably, the two ends of the pin shaft are provided with oil passages 12 for adding lubricating oil. That is, the oil ducts 12 may be provided at both ends of the pin shaft, and then the oil cups 41 may be screwed into the oil ducts 12, and then the lubricating oil is injected between the pin shaft and the lower swivel base 6 or between the pin shaft and the upper swivel base 42 by using an oil gun for lubrication.
Preferably, the lifting driving member 43 is a lifting cylinder, the lifting cylinder is a double-acting cylinder, one end of the lifting cylinder is a unthreaded hole 13 connected with the upper swivel base 42, and the other end of the lifting cylinder is a joint bearing 14 connected with the Z-shaped bracket.
It should be noted that the lifting cylinder is a double-acting cylinder, one end of the double-acting cylinder is a unthreaded hole 13, and the other end of the double-acting cylinder is a joint bearing 14. The joint bearing 14 is a spherical sliding bearing, and can rotate and swing at any angle during movement, so as to reduce the requirement on relative positions among a plurality of rotating seats for fixing the lifting oil cylinder, and facilitate component processing and assembling operations.
It should be noted that, after the bearing hole 32 of the knuckle bearing 14 of the lift cylinder is aligned with the first hole 28 of the upper portion of the rotating bracket 5, the connecting pin 27 is inserted through the bearing hole 32 and the first hole 28, the lug plate 29 of the connecting pin 27 is abutted against the rotating bracket 5, then the side hole 30 of the connecting pin 27 is aligned with the threaded hole 10 of the rotating bracket 5, and the spring washer 23 and the bolt 24 are used for locking operation. In addition, after the unthreaded hole 13 of the lifting cylinder is aligned with the through hole 31 of the upper rotary base 42, the connecting pin 27 is inserted through the unthreaded hole 13 and the through hole 31, the lug plate 29 of the connecting pin 27 abuts against the upper rotary base 42, then the side hole 30 of the connecting pin 27 is aligned with the threaded hole 10 of the upper rotary base 42, and then the locking operation is performed by using the spring washer 23 and the bolt 24.
After the through hole 31 of the lower rotary base 6 is aligned with the second hole 33 of the rotary bracket 5, the connection pin 27 is inserted through the through hole 31 and the second hole 33, the lug 29 of the connection pin 27 abuts against the lower rotary base 6, the side hole 30 of the connection pin 27 is aligned with the screw hole 10 of the lower rotary base 6, and the spring washer 23 and the bolt 24 are used to perform the locking operation.
Preferably, the side shift driving member 9 is a side shift oil cylinder, the side shift oil cylinder is a double-acting oil cylinder, one end of the side shift oil cylinder is a smooth hole 13 connected with the side shift rotating base 7, and the other end of the side shift oil cylinder is a joint bearing 14 connected with the lower rotating base 6.
It should be noted that the lateral shifting cylinders are double-acting cylinders, one end of each double-acting cylinder is a unthreaded hole 13, and the other end of each double-acting cylinder is a joint bearing 14. The spherical sliding bearing 14 can rotate and swing at any angle during movement, so that the relative position requirement between a plurality of rotating seats for fixing the side-shifting oil cylinder is reduced, and the component processing and assembling operation is convenient.
It should be noted that, after the bearing hole 32 of the joint bearing 14 of the side-shifting cylinder is aligned with the through hole 31 of the lower swivel base 6, the connecting pin 27 is inserted through the bearing hole 32 and the through hole 31, the ear plate 29 of the connecting pin 27 abuts against the lower swivel base 6, then the side hole 30 of the connecting pin 27 is aligned with the threaded hole 10 of the lower swivel base 6, and the spring washer 23 and the bolt 24 are used for locking operation. In addition, after aligning the unthreaded hole 13 of the side-shifting cylinder with the through hole 31 of the side-shifting rotary base 7, the connecting pin 27 is inserted through the unthreaded hole 13 and the through hole 31, the lug plate 29 of the connecting pin 27 is abutted against the side-shifting rotary base 7, then the side hole 30 of the connecting pin 27 is aligned with the threaded hole 10 of the side-shifting rotary base 7, and then the locking operation is performed by the spring washer 23 and the bolt 24.
In addition, it should be noted that the oil groove 34 may be provided inside the connecting pin 27, and during the use process, the oil cup 41 may be screwed into the top of the connecting pin 27, and then the oil gun is used to inject the lubricating oil between the connecting pin 27 and the hole wall in contact with the connecting pin, so as to fill the lubricating oil between the two.
In the actual application process, the shapes, structures, sizes, materials, positions and the like of the lifting oil cylinder, the side shifting oil cylinder and the connecting pin 27 can be determined according to actual conditions and actual requirements.
Preferably, the control handle 15 of the control device is provided behind the seat of the trailer 1.
It should be noted that the lifting cylinder and the side shift cylinder are both double-acting cylinders, and can be controlled by the multi-way valve control handle 15 under the driving of the hydraulic device, so that a driver can control the towing hook 4 to move up and down, left and right on the seat, and lock the towing hook 4 at any position, so that the steering shaft of the chassis with the steering wheel is lifted off the ground, and the towing operation of the chassis with the steering wheel is realized.
Therefore, when the trailer 1 is hooked, the driver operates the control handle 15 of the multi-way valve on the seat to control the hooking operation between the towing hook 4 and the towing vehicle, and controls the towing hook 4 to move in three directions of the X axis, the Y axis and the Z axis to move the towing vehicle to a desired position.
It should be noted that the multi-way valve control handle 15 is disposed behind the seat, so that the driver can work to the rear side while operating the control handle 15 and observing the situation at the rear of the vehicle, and the operator can have a good operation view and high safety. Moreover, the device adopts a hydraulic oil cylinder and hydraulic drive, has large driving force and can adapt to heavy-load working conditions. Under the light load working condition, the device can also be driven by a motor or an electric push rod and the like.
On the basis of the above embodiment, preferably, the upper end of the towing hook 4 is provided with a cylindrical member 16 capable of rotating around the Z-shaped bracket, a limiting block 17 sleeved on the outer periphery of the cylindrical member 16, and a fixing pin 18 for locking the cylindrical member 16 and the limiting block 17, the Z-shaped bracket is provided with a mounting hole 19 capable of passing through the cylindrical member 16, and the bottom of the limiting block 17 and the top of the towing hook 4 are both abutted against the Z-shaped bracket.
It should be noted that the cylindrical member 16 at the upper end of the towing hook 4 can pass through the mounting hole 19 of the Z-shaped bracket, so that the towing hook 4 can rotate freely around the mounting hole 19 during towing, thereby reducing the radial force of the load on the towing hook 4 during towing. That is, the towing hook 4 can move along three directions of the X axis, the Y axis and the Z axis, and the towing hook 4 can also rotate circumferentially around the Z axis, that is, the towing hook 4 has four degrees of freedom.
It should be further noted that the limiting block 17 can be sleeved into the outer peripheral portion of the cylindrical member 16, and the limiting hole 35 of the limiting block 17 is aligned with the limiting hole 35 of the cylindrical member 16, then, the fixing pin 18 with the stepped groove 36 at one end can pass through the two limiting holes 35, the other end of the fixing pin 18 is provided with a clamp spring groove 37, and the fixing pin 18 can be axially fixed by using the clamp spring 38. The bottom of the limiting block 17 and the step surface 39 at the top of the towing hook 4 fix the towing hook 4 on the Z-shaped bracket, so that the towing hook 4 cannot move up and down along the mounting hole 19, the towing hook 4 is ensured to rotate freely only around the mounting hole 19, and the stability of towing operation is ensured.
Preferably, the towing hook 4 is positioned between the upper swivel base 42 and the lower swivel base 6, and the towing hook 4 is in a curved structure, and the stress point of the curved structure is arranged close to the center line of the cylindrical member 16.
It should be noted that, there is a height difference between the first hole 28 and the second hole 33 on the Z-shaped bracket, in order to ensure that the towing hook 4 is arranged between the upper swivel base 42 and the lower swivel base 6, so as to reduce the bending moment of the towing load F2 to the two swivel points (the lower swivel base 6 and the side shift swivel base 7), the towing moment arm of the towing load F2 is L2, and the towing moment arm L2 is small and approaches zero. The towing hook 4 is designed to be a curved structure, and the force bearing point can be as close to the rotation center (the center line of the cylindrical member 16) as possible, so as to reduce the lifting moment arm L1 of the lifting load F1, and further reduce the bending moment of the lifting load F1 on the towing hook 4, and the schematic diagram of the bending moment at the towing hook 4 is shown in fig. 13.
Preferably, the towing hook 4 and the rotating bracket 5 are each provided with a mounting plate 21 for horizontally mounting an extension spring 20, the extension spring 20 being used to keep the towing hook 4 in a neutral position of the peg board 2 in the unloaded condition.
It should be noted that, a mounting plate 21 for mounting the extension spring 20 may be disposed at corresponding positions of the towing hook 4 and the rotating bracket 5, and two elastic ends of the extension spring 20 are respectively hooked into the fixing holes 40 of the mounting plate 21. The extension spring 20 can ensure that the towing hook 4 is always kept at a middle position (the middle position of the hanging plate 2) under the condition of no load, and the function of automatic resetting of the towing hook 4 is achieved without manual regulation and resetting.
In the actual application process, according to actual conditions and actual requirements, the shapes, structures, sizes, materials, positions and the like of the cylindrical member 16, the limiting block 17, the fixing pin 18 and the extension spring 20 can be determined.
It should be noted that the first hole 28 and the second hole 33 are mentioned in the present application, wherein the first and the second are only for distinguishing the position difference and are not sequentially distinguished.
It should be noted that the directions and positional relationships indicated in the present application, such as "up and down" and the like, are based on the directions and positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating the understanding, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.
The four-degree-of-freedom adjustable multifunctional traction device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a multi-functional draw gear of four degree of freedom adjustable which characterized in that includes: the towing device comprises a hanging plate (2) arranged at the rear part of a trailer (1), a towing hook (4) used for connecting a vehicle (3) to be towed, a rotating bracket (5) used for mounting the towing hook (4), a lower rotating seat (6) arranged at the lower part of the hanging plate (2), an upper rotating seat (42) arranged at the upper part of the hanging plate (2), a lifting driving piece (43) used for driving the towing hook (4) to move up and down and a control device;
the rotary support (5) is a Z-shaped support, the traction hook (4) is arranged at the left end of the upper part of the Z-shaped support, one end of the lifting driving piece (43) is hinged with the right end of the upper part of the Z-shaped support, the other end of the lifting driving piece (43) is connected with the upper rotating seat (42), the right end of the lower part of the Z-shaped support is connected with the lower rotating seat (6), the lifting driving piece (43) is obliquely arranged, the upper part of the Z-shaped support is of a seesaw structure, and the lifting driving piece (43) is connected with the control device;
the side-shifting device is characterized by further comprising a side-shifting rotating base (7) arranged at the rear part of the trailer (1), a connecting piece (8) used for connecting the upper rotating base (42) with the lower rotating base (6), and a side-shifting driving piece (9) used for driving the towing hook (4) to move left and right, wherein one end of the side-shifting driving piece (9) is hinged to the side part of the left end of the lower part of the Z-shaped support, the other end of the side-shifting driving piece (9) is connected with the side-shifting rotating base (7), and the side-shifting driving piece (9) is connected with the control device.
2. The multifunctional traction device with four degrees of freedom adjustable according to claim 1, wherein the connecting piece (8) is a pin with threaded holes (10) at both ends, and the upper swivel base (42) and the lower swivel base (6) are correspondingly provided with through holes (11) for passing through the pin.
3. The multifunctional traction device with four degrees of freedom adjustable according to claim 2, wherein the two ends of the pin shaft are provided with oil channels (12) for adding lubricating oil.
4. The multifunctional traction device with four adjustable degrees of freedom according to any one of claims 1 to 3, wherein the lifting driving member (43) is a lift cylinder, the lift cylinder is a double-acting cylinder, one end of the lift cylinder is a light hole (13) connected with the upper swivel base (42), and the other end of the lift cylinder is a joint bearing (14) connected with the Z-shaped bracket.
5. The multifunctional traction device with four degrees of freedom adjustable according to claim 4, wherein the side shift driving member (9) is a side shift cylinder, the side shift cylinder is a double-acting cylinder, one end of the side shift cylinder is a light hole (13) connected with the side shift rotating base (7), and the other end of the side shift cylinder is a joint bearing (14) connected with the lower rotating base (6).
6. The multifunctional traction device with four degrees of freedom adjustable according to claim 5, characterized in that the control handle (15) of the control device is arranged behind the seat of the trailer (1).
7. The multifunctional traction device with four degrees of freedom adjustable according to any one of claims 1 to 3, characterized in that the upper end of the traction hook (4) is provided with a cylindrical member (16) capable of rotating around the Z-shaped bracket, a stop block (17) sleeved on the outer periphery of the cylindrical member (16), and a fixing pin (18) for locking the cylindrical member (16) and the stop block (17), the Z-shaped bracket is provided with a mounting hole (19) capable of passing through the cylindrical member (16), and the bottom of the stop block (17) and the top of the traction hook (4) are abutted against the Z-shaped bracket.
8. The multifunctional traction device with four degrees of freedom adjustable according to claim 7 is characterized in that the traction hook (4) is located between the upper swivel base (42) and the lower swivel base (6), the traction hook (4) is a curved structure, and the stress point of the curved structure is arranged close to the center line of the cylindrical member (16).
9. The multifunctional traction device with four adjustable degrees of freedom according to any one of claims 1 to 3, characterized in that the traction hook (4) and the rotating bracket (5) are each provided with a mounting plate (21) for horizontally mounting an extension spring (20), the extension spring (20) being used to keep the traction hook (4) in a neutral position of the clevis (2) in the unloaded condition.
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| CN202111593523.8A CN113978190B (en) | 2021-12-24 | 2021-12-24 | Four-freedom-degree adjustable multifunctional traction device |
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| CN202111593523.8A CN113978190B (en) | 2021-12-24 | 2021-12-24 | Four-freedom-degree adjustable multifunctional traction device |
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| CN113978190B true CN113978190B (en) | 2022-04-01 |
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| Publication number | Publication date |
|---|---|
| CN113978190A (en) | 2022-01-28 |
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