CN109649527B

CN109649527B - Steering wheel connecting device for AGV

Info

Publication number: CN109649527B
Application number: CN201811569386.2A
Authority: CN
Inventors: 胡松
Original assignee: Wuhu Hit Robot Technology Research Institute Co Ltd
Current assignee: Wuhu Hit Robot Technology Research Institute Co Ltd
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2022-03-11
Anticipated expiration: 2038-12-21
Also published as: CN109649527A

Abstract

The invention discloses a steering wheel connecting device for an AGV (automatic guided vehicle), which comprises an upper mounting plate, a lower mounting plate, a guide mechanism, a height adjusting bolt and an elastic element, wherein the guide mechanism is connected with the upper mounting plate and the lower mounting plate and is used for guiding, the height adjusting bolt is used for realizing the connection of the upper mounting plate and the lower mounting plate, the distance between the upper mounting plate and the lower mounting plate is adjustable, and the elastic element is arranged between the upper mounting plate and the lower mounting plate and is used for applying acting force to the upper mounting plate. The steering wheel connecting device for the AGV trolley has the advantages of wide application range, good complex environment adaptability, simple and compact structure, strong bearing capacity, convenience in installation and maintenance and capability of fully utilizing the space of the AGV trolley body.

Description

Steering wheel connecting device for AGV

Technical Field

The invention belongs to the technical field of automatic carrying, and particularly relates to a steering wheel connecting device for an AGV.

Background

An AGV is a short-hand transport vehicle equipped with an electromagnetic or photoelectric automatic guide device, and capable of automatically traveling along a predetermined guide path, and has a programming and mode selection device, a safety protection device, and various transfer functions. The AGV has the characteristics of high automation degree, safety, flexibility and the like.

In recent years, with the progress of society and the increase of labor cost, China factories begin to develop into the fields of logistics automation and automatic assembly, so that the demand of AGV is increasing day by day, and the AGV is widely applied to the industries of automatic production and storage systems such as automobile manufacturing and machining.

The steering wheel drive type AGV has the advantages of being high in bearing capacity, good in flexibility, high in positioning accuracy, high in space utilization rate and the like, and is widely applied to industries such as laser forklifts, electric pallet trucks and assembled AGV trolleys at present.

The method has the advantages that the AGV body space is fully saved, so that the overall dimension of the AGV body is reduced, and the defects that when the AGV has large body welding machining error or poor working pavement environment, four wheels (including steering wheels) of the AGV cannot touch simultaneously, so that the load capacity of the AGV is insufficient, and the steering wheels are overloaded; the other type is that the steering wheel device is fixedly connected to the AGV body through the damping device, and an auxiliary supporting caster is arranged beside the steering wheel device, the steering wheel device has the damping performance, can adapt to various complex working pavements, and has large load supporting capacity, and the defect that the auxiliary supporting caster must be arranged beside the steering wheel device in the mode, otherwise, the AGV trolley is in no-load operation and in load operation, the pressure of the steering wheel on the AGV trolley is different, the overall dimension of the AGV trolley is increased, and the application range of the AGV is narrowed.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a steering wheel connecting device for an AGV (automatic guided vehicle), and aims to improve the application range.

In order to achieve the purpose, the invention adopts the technical scheme that: AGV is rudder wheel connecting device for dolly, including last mounting panel, lower mounting panel, with last mounting panel and down the mounting panel be connected and be used for playing the guiding role the guiding mechanism, be used for realizing being connected of last mounting panel and lower mounting panel and make between last mounting panel and the lower mounting panel apart from adjustable height adjusting bolt and set up at last mounting panel under and between the mounting panel and exert the elastic element of effort to last mounting panel.

The height adjusting bolt with the mounting panel is threaded connection down, and the lower mounting panel has the internal thread hole that lets height adjusting bolt male, it has the hole of dodging that lets height adjusting bolt pass to go up the mounting panel.

The elastic element is a cylindrical spiral spring sleeved on the height adjusting bolt.

The elastic element is replaceable, and the elastic element has multiple specifications with different rigidity coefficients.

When the acting force applied to the upper mounting plate by the elastic element is greater than the load borne by the upper mounting plate, the upper mounting plate transmits the acting force generated by the elastic element to the height adjusting bolt.

When the acting force applied to the upper mounting plate by the elastic element is smaller than the load borne by the upper mounting plate, the elastic element plays a role in shock absorption.

The height adjusting bolts and the elastic elements are all provided with a plurality of elastic elements, and each elastic element is respectively sleeved on one height adjusting bolt.

The guide mechanism comprises a guide shaft, a limit baffle arranged on the guide shaft and positioned above the upper mounting plate, a linear bearing arranged on the upper mounting plate and sleeved on the guide shaft, and a fixing ring arranged on the lower mounting plate and relatively fixed with the guide shaft, wherein the axis of the guide shaft is parallel to the axis of the height adjusting bolt.

The guide mechanism sets up a plurality ofly, and all guide mechanism are symmetrical arrangement.

Go up the automobile body coupling of mounting panel through bolt and AGV dolly, go up the mounting panel and have a plurality of last mounting holes that let the bolt pass, go up the mounting hole and be waist type hole.

The steering wheel connecting device for the AGV trolley has the advantages of wide application range, good complex environment adaptability, simple and compact structure, strong bearing capacity, convenience in installation and maintenance and capability of fully utilizing the space of the AGV trolley body.

Drawings

The description includes the following figures, the contents shown are respectively:

FIG. 1 is a schematic structural diagram of a steering wheel connecting device for an AGV according to the present invention;

FIG. 2 is a front view of the steerable wheel attachment for an AGV of the present invention;

FIG. 3 is a schematic structural view of the upper mounting plate;

FIG. 4 is a schematic structural view of the lower mounting plate;

labeled as: 1. an upper mounting plate; 11. an upper mounting hole; 12. threading holes are formed; 13. avoiding holes; 14. a linear bearing mounting hole; 2. a guide mechanism; 21. a limit baffle; 22. a guide shaft; 23. a linear bearing; 24. a fixing ring; 3. a height adjustment bolt; 4. an elastic element; 5. a lower mounting plate; 51. a lower boss; 52. a threading hole is formed; 53. a shaft hole; 54. an upper boss; 511. and a lower mounting hole.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.

As shown in fig. 1 to 4, the present invention provides a steering wheel connecting device for an AGV trolley, which includes an upper mounting plate 1, a lower mounting plate 5, a guiding mechanism 2 connected to the upper mounting plate 1 and the lower mounting plate 5 and used for guiding, a height adjusting bolt 3 used for realizing the connection between the upper mounting plate 1 and the lower mounting plate 5 and enabling the distance between the upper mounting plate 1 and the lower mounting plate 5 to be adjustable, and an elastic element 4 arranged between the upper mounting plate 1 and the lower mounting plate 5 and applying an acting force to the upper mounting plate 1.

Specifically, as shown in fig. 1 to 4, the upper mounting plate 1 is located above the lower mounting plate 5, the upper mounting plate 1 is parallel to the lower mounting plate 5, the upper mounting plate 1 and the lower mounting plate 5 are both horizontally disposed, the steering wheel is mounted on the lower mounting plate 5 and located below the lower mounting plate 5, the steering wheel is used for providing driving force for driving the AGV to run, and the steering wheel is used for realizing steering of the AGV. The height adjusting bolt 3 is vertical, and the axis of height adjusting bolt 3 is located vertical plane, and height adjusting bolt 3 is the hexagon head bolt.

As shown in fig. 1 to 4, the height adjusting bolt 3 is in threaded connection with the lower mounting plate 5, the lower mounting plate 5 has an internal threaded hole into which the height adjusting bolt 3 is inserted, and the upper mounting plate 1 has an avoiding hole 13 through which the height adjusting bolt 3 passes, so that the distance between the upper mounting plate 1 and the lower mounting plate 5 is conveniently adjusted. The elastic element 4 is a cylindrical spiral spring sleeved on the height adjusting bolt 3, the elastic element 4 is a compression spring, the elastic element 4 is clamped between the upper mounting plate 1 and the lower mounting plate 5, and the elastic element 4 is vertically arranged. The upper mounting plate 1 is used for being fixedly connected with the AGV body, downward load is applied to the upper mounting plate 1 through the AGV body, and the acting force applied to the upper mounting plate 1 by the elastic element 4 is upward.

Preferably, the elastic element 4 is replaceable, and the elastic element 4 has a plurality of specifications having different stiffness coefficients. The elastic elements 4 with different rigidity coefficients are arranged between the upper mounting plate 1 and the lower mounting plate 5, and the acting force exerted by the elastic elements 4 on the upper mounting plate 1 is different in magnitude. When the acting force exerted by the elastic element 4 on the upper mounting plate 1 is larger, the steering wheel connecting device for the AGV trolley can be a rigid connecting device for realizing rigid connection between the steering wheel and the body of the AGV trolley; when the acting force exerted by the elastic element 4 on the upper mounting plate 1 is small, the steering wheel connecting device for the AGV trolley can be a device which realizes the connection between the steering wheel and the body of the AGV trolley and has a damping effect. Adopt altitude mixture control bolt 3, both made things convenient for the change of elastic element 4, also be convenient for adjust the distance between mounting panel 1 and the lower mounting panel 5, through revolving high mixture control bolt 3 soon, adjust the degree of depth that high mixture control bolt 3 inserted in the internal thread hole of mounting panel 5 down, can realize going up the regulation of the distance between mounting panel 1 and the lower mounting panel 5, simple structure, convenient operation. The elastic member 4 can be replaced by removing the height adjusting bolts 3 from the upper mounting plate 1 and the lower mounting plate 5.

As shown in fig. 1 to 4, the lower mounting plate 5 includes a mounting plate body and an upper boss 54 disposed on the mounting plate body, the upper mounting plate 1 is parallel to the mounting plate body, the mounting plate body is horizontally disposed, the steering wheel is mounted on the mounting plate body and the steering wheel is located below the mounting plate body, the upper boss 54 is disposed on the top surface of the mounting plate body and the upper boss 54 extends toward the upper side of the mounting plate body, and the upper boss 54 is fixedly connected to the mounting plate body. The height adjusting bolt 3 is in threaded connection with the upper boss 54, correspondingly, the inner portion of the upper boss 54 is provided with an internal thread hole, the height adjusting bolt 3 is provided with an external thread, the internal thread hole is a through hole which extends downwards from the top surface of the upper boss 54 and runs through the upper boss 54, the upper boss 54 is a cylinder, and the internal thread hole is formed in the center of the upper boss 54. The outer diameter of the upper boss 54 is larger than that of the elastic element 4, the elastic element 4 is clamped between the upper mounting plate 1 and the upper boss 54, the upper end of the elastic element 4 is abutted against the bottom surface of the upper mounting plate 1, and the lower end of the elastic element 4 is abutted against the top surface of the upper boss 54. The hole 13 of dodging that sets up on going up mounting panel 1 is the round hole, should dodge the through-hole that hole 13 was the through setting on last mounting panel 1. The height adjusting bolt 3 comprises a bolt head and a screw rod part, an external thread is arranged on the outer surface of the screw rod part, the screw rod part is inserted into an internal thread hole of the lower mounting plate 5 and penetrates through the avoidance hole 13, the end part of the screw rod part is fixedly connected with the bolt head at the center of the bolt head, the bolt head is of a hexagonal block structure, the size of the bolt head is larger than the diameter of the avoidance hole 13 on the upper mounting plate 1, the size of the bolt head refers to the diameter of an excircle circle of the bolt head, and the bolt head is located above the upper mounting plate 1.

Preferably, the height adjusting bolts 3 and the elastic elements 4 are provided in plurality, the number of the elastic elements 4 is the same as that of the height adjusting bolts 3, and each elastic element 4 is sleeved on one height adjusting bolt 3. Correspondingly, the upper bosses 54 are also provided with a plurality of upper bosses 54, the number of the upper bosses 54 is the same as that of the height adjusting bolts 3, each height adjusting bolt 3 is in threaded connection with one upper boss 54, all the height adjusting bolts 3 are uniformly distributed along the circumferential direction by taking the rotating central line of the steering wheel as the central line, the rotating central line of the steering wheel is the rotating central line of the steering wheel when the steering process of the AGV trolley is realized, and the rotating central line is parallel to the axis of the height adjusting bolts 3 so as to ensure uniform stress distribution.

In the present embodiment, as shown in fig. 1 to 4, four height-adjusting bolts 3 and four elastic members 4 are provided, four upper bosses 54 are provided, and the mounting plate body has a rectangular structure.

When the acting force exerted by the elastic element 4 on the upper mounting plate 1 is larger than the load borne by the upper mounting plate 1, the acting force generated by the elastic element 4 is transmitted to the height adjusting bolt 3 by the upper mounting plate 1, the bolt head of the height adjusting bolt 3 is always attached to the top surface of the upper mounting plate 1, the rigidity coefficient of the elastic element 4 arranged between the upper mounting plate 1 and the lower mounting plate 5 is relatively large, a spring with a large rigidity coefficient is selected as the elastic element 4, the formed steering wheel connecting device for the AGV trolley is a rigid connecting device for realizing rigid connection between a steering wheel and a trolley body of the AGV trolley, and at the moment, the upper mounting plate 1 and the lower mounting plate 5 can be kept relatively fixed. The elastic acting force applied by the elastic element 4 to the upper mounting plate 1 is larger than the downward load born by the upper mounting plate 1, the acting force generated by the elastic element 4 is larger than the supporting force which is actually required to be provided, and the redundant acting force is loaded on the height adjusting bolt 3, so that the height of the mounting surface of the steering wheel can be adjusted through the height adjusting bolt 3, and the steering wheel can be ensured to be fully contacted with the ground. Therefore, when the AGV trolley is used, if the working environment road surface of the AGV trolley is good, the steering wheel device does not need a damping device for protection, at the moment, the steering wheel connecting device is used as a rigid connecting device, namely a spring with a large rigidity coefficient is selected as the elastic element 4, the elastic force of the spring is larger than the supporting force needed to be provided, redundant elastic force is loaded on the height adjusting bolt 3, the height of the installation surface of the steering wheel device is adjusted through the height adjusting bolt 33, even if four wheels needing to be installed on the body of the AGV trolley are under a large machining error, the four wheels can be in good contact with a working surface at the same time, in addition, auxiliary supporting trundles do not need to be installed on the body of the AGV trolley, the space of the AGV trolley body is fully utilized, the structure is compact, and the occupied space of a working place is reduced.

When the acting force applied to the upper mounting plate 1 by the elastic element 4 is smaller than the load borne by the upper mounting plate 1, the elastic element 4 plays a role in shock absorption, the rigidity coefficient of the elastic element 4 arranged between the upper mounting plate 1 and the lower mounting plate 5 is relatively smaller at the moment, a spring with a small rigidity coefficient is selected as the elastic element 4, the formed steering wheel connecting device for the AGV trolley is a shock absorption device which can realize connection between a steering wheel and a body of the AGV trolley and has a shock absorption function, when the AGV trolley runs on a bumpy and uneven road surface, the upper mounting plate 1 and the lower mounting plate 5 can move relatively, the elastic element 4 stretches and retracts, the height adjusting bolt 3 can play a role in guiding the elastic element 4 at the moment, and the stability is improved. The elastic force applied by the elastic element 4 to the upper mounting plate 1 is smaller than the downward load borne by the upper mounting plate 1, the acting force generated by the elastic element 4 is not enough to provide the actually required supporting force, and the elastic element 4 plays a role in shock absorption. Therefore when using, if the operating mode environment of AGV dolly is complicated, the road surface of traveling is precipitous, at this moment, this steering wheel connecting device uses as steering wheel damping device, select the spring that rigidity coefficient is relatively less as elastic element 4 promptly, the elasticity of spring is not enough to provide the holding power of needs, the other auxiliary stay truckle that will install of its steering wheel device, though can increase the overall dimension of AGV automobile body, it has buffering shock-absorbing capacity, can adapt to complicated working road surface, and the installation auxiliary stay truckle shares a large amount of holding power, make the steering wheel device protected.

As shown in fig. 1 to 4, the guide mechanism 2 is used for guiding the upper mounting plate 1 when the upper mounting plate 1 and the lower mounting plate 5 perform relative motion, the guide mechanism 2 includes a guide shaft 22, a limit baffle 21 disposed on the guide shaft 22 and located above the upper mounting plate 1, a linear bearing 23 disposed on the upper mounting plate 1 and sleeved on the guide shaft 22, and a fixing ring 24 disposed on the lower mounting plate 5 and relatively fixed to the guide shaft 22, and an axis of the guide shaft 22 is parallel to an axis of the height adjusting bolt 3. The guide shaft 22 is vertical and the axis of the guide shaft 22 is parallel to the axis of the height adjusting bolt 3, the fixing ring 24 is installed on the top surface of the mounting plate body and the fixing ring 24 is fixedly connected with the mounting plate body, the lower end of the guide shaft 22 is inserted into the fixing ring 24 and the guide shaft 22 is fixedly connected with the fixing ring 24 through a screw. The upper mounting plate 1 is provided with a linear bearing mounting hole 14, a linear bearing 23 is mounted in the linear bearing mounting hole 14, and the linear bearing 23 is fixedly connected with the upper mounting plate 1. Limiting baffle 21 and guiding axle 22's upper end fixed connection, limiting baffle 21 is located linear bearing 23's top, and limiting baffle 21's diameter is greater than the diameter of linear bearing 23's centre bore, and limiting baffle 21 is used for playing limiting displacement, and limiting baffle 21 is circular block structure, and limiting baffle 21 and guiding axle 22 are coaxial setting.

Preferably, the guide mechanism 2 is provided in plurality, and all the guide mechanisms 2 are arranged symmetrically.

As shown in fig. 1, in the present embodiment, two guide mechanisms 2 are provided, and each guide mechanism 2 is located at an intermediate position between two height-adjusting bolts 3.

As shown in fig. 1 to 4, an upper threading hole 12 is provided at the center of the upper mounting plate 1, the upper threading hole 12 is a rectangular hole, the upper threading hole 12 is a through hole penetrating the upper mounting plate 1 in the plate thickness direction, and the upper threading hole 12 is used for guiding the relevant lines of the steering wheel and the driver thereof to the vehicle body control cabinet. Four dodge the hole 13 for last through wires hole 12 around symmetrical arrangement, four height adjusting bolt 3 also for last through wires hole 12 around symmetrical arrangement, two guiding mechanism 2 symmetrical arrangement are in last through wires hole 12's both sides.

As shown in fig. 1 to 4, the lower mounting plate 5 further includes a lower boss 51 disposed on the mounting plate body, the lower boss 51 is located below the mounting plate body, the lower boss 51 is fixedly connected with the mounting plate body, the lower boss 51 is located between the mounting plate body and the large gear and the small gear of the steering wheel, and the lower boss 51 is used for preventing the mounting plate body from contacting the large gear and the small gear of the steering wheel at the same time, so as to protect the gear structure inside the steering wheel. The lower boss 51 is of a circular ring structure, the axis of the lower boss 51 is parallel to the axis of the height adjusting bolt 3, the central hole of the lower boss 51 is a lower threading hole 52, and the lower threading hole 52 is used for wiring related electrical components. Four upper bosses 54 are symmetrically arranged at four corners of the mounting plate body, and eight lower mounting holes 511 are symmetrically arranged around the lower bosses 51 and used for mounting the steering wheel device.

As shown in fig. 1 to 3, the upper mounting plate 1 is connected with the car body of the AGV car through bolts, the upper mounting plate 1 is provided with a plurality of upper mounting holes 11 for the bolts to pass through, the upper mounting holes 11 are waist-shaped holes, the upper mounting holes 11 are through holes arranged on the upper mounting plate 1 along the thickness direction of the plate, the length of the upper mounting holes 11 is larger than the diameter of the bolts, and the positions of the upper mounting plates and the AGV car body can be conveniently adjusted during assembly.

In the present embodiment, as shown in fig. 1 to fig. 3, the upper mounting plate 1 is in an X-shaped structure, four upper mounting holes 11 are provided, the four upper mounting holes 11 are distributed in a rectangular shape, and each upper mounting hole 11 is located at one corner of the upper mounting plate 1.

The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.

Claims

Steering wheel connecting device for AGV dolly, its characterized in that: the device comprises an upper mounting plate, a lower mounting plate, a guide mechanism, a height adjusting bolt and an elastic element, wherein the guide mechanism is connected with the upper mounting plate and the lower mounting plate and used for guiding, the height adjusting bolt is used for realizing the connection of the upper mounting plate and the lower mounting plate and enabling the distance between the upper mounting plate and the lower mounting plate to be adjustable, and the elastic element is arranged between the upper mounting plate and the lower mounting plate and used for applying acting force to the upper mounting plate;

the upper mounting plate is positioned above the lower mounting plate, the upper mounting plate is parallel to the lower mounting plate, the upper mounting plate and the lower mounting plate are both horizontally arranged, the steering wheel is arranged on the lower mounting plate and positioned below the lower mounting plate, the steering wheel is used for providing driving force for driving the AGV to travel, and the steering wheel is used for realizing steering of the AGV; the height adjusting bolt is vertically arranged, the axis of the height adjusting bolt is positioned in a vertical plane, and the height adjusting bolt is a hexagon head bolt;

the height adjusting bolt is in threaded connection with the lower mounting plate, the lower mounting plate is provided with an internal thread hole into which the height adjusting bolt is inserted, and the upper mounting plate is provided with an avoidance hole through which the height adjusting bolt passes;

the elastic element is a cylindrical spiral spring sleeved on the height adjusting bolt, the elastic element is a compression spring, and the acting force applied by the elastic element to the upper mounting plate is upward;

the elastic element is replaceable and has various specifications with different rigidity coefficients;

when the acting force applied to the upper mounting plate by the elastic element is greater than the load borne by the upper mounting plate, the upper mounting plate transmits the acting force generated by the elastic element to the height adjusting bolt;

when the acting force exerted by the elastic element on the upper mounting plate is smaller than the load borne by the upper mounting plate, the elastic element plays a role in shock absorption;

the height adjusting bolts and the elastic elements are respectively provided with four more height adjusting bolts, and each elastic element is respectively sleeved on one height adjusting bolt;

the guide mechanism comprises a guide shaft, a limit baffle arranged on the guide shaft and positioned above the upper mounting plate, a linear bearing arranged on the upper mounting plate and sleeved on the guide shaft, and a fixing ring arranged on the lower mounting plate and relatively fixed with the guide shaft, wherein the axis of the guide shaft is parallel to the axis of the height adjusting bolt;

the lower mounting plate comprises a mounting plate body and an upper boss arranged on the mounting plate body, the upper mounting plate 1 is parallel to the mounting plate body, the mounting plate body is horizontally arranged, the steering wheel is mounted on the mounting plate body and is positioned below the mounting plate body, the upper boss is arranged on the top surface of the mounting plate body and extends towards the upper part of the mounting plate body, and the upper boss is fixedly connected with the mounting plate body; the height adjusting bolt is in threaded connection with the upper boss, correspondingly, an internal thread hole is formed in the upper boss, an external thread is arranged on the height adjusting bolt, and the internal thread hole extends downwards from the top surface of the upper boss and is a through hole penetrating through the upper boss; the outer diameter of the upper boss is larger than that of the elastic element, the elastic element is clamped between the upper mounting plate and the upper boss, the upper end of the elastic element is abutted against the bottom surface of the upper mounting plate, and the lower end of the elastic element is abutted against the top surface of the upper boss; the height adjusting bolt comprises a bolt head and a screw rod part, wherein an external thread is arranged on the outer surface of the screw rod part, the screw rod part is inserted into an internal thread hole of the lower mounting plate and penetrates through the avoidance hole, the end part of the screw rod part is fixedly connected with the bolt head at the center of the bolt head, the bolt head is of a hexagonal block structure, the size of the bolt head is larger than the diameter of the avoidance hole in the upper mounting plate, the size of the bolt head refers to the diameter of an excircle circle of the bolt head, and the bolt head is positioned above the upper mounting plate;

the number of the upper bosses is the same as that of the height adjusting bolts, each height adjusting bolt is in threaded connection with one upper boss, all the height adjusting bolts are uniformly distributed along the circumferential direction by taking the rotating central line of the steering wheel as the central line, the rotating central line of the steering wheel refers to the rotating central line of the steering wheel when the steering wheel deflects in the process of realizing the steering of the AGV trolley, and the rotating central line is parallel to the axes of the height adjusting bolts;

when the acting force exerted by the elastic element on the upper mounting plate is greater than the load borne by the upper mounting plate, the upper mounting plate transmits the acting force generated by the elastic element to the height adjusting bolt, the bolt head of the height adjusting bolt is always attached to the top surface of the upper mounting plate, the rigidity coefficient of the elastic element arranged between the upper mounting plate and the lower mounting plate is relatively large, the formed steering wheel connecting device for the AGV trolley is a rigid connecting device for realizing rigid connection between the steering wheel and the body of the AGV trolley, and the upper mounting plate and the lower mounting plate can be relatively fixed; the elastic acting force exerted by the elastic element on the upper mounting plate is larger than the downward load born by the upper mounting plate, the acting force generated by the elastic element is larger than the supporting force which is actually required to be provided, and the redundant acting force is loaded on the height adjusting bolt, so that the height of the mounting surface of the steering wheel can be adjusted through the height adjusting bolt, and the steering wheel can be ensured to be fully contacted with the ground;

when the acting force exerted by the elastic element on the upper mounting plate is smaller than the load borne by the upper mounting plate, the elastic element plays a role in shock absorption, the rigidity coefficient of the elastic element arranged between the upper mounting plate and the lower mounting plate is relatively small, the formed steering wheel connecting device for the AGV trolley is a shock absorption device which can realize the connection between a steering wheel and a body of the AGV trolley and has a shock absorption function, when the AGV trolley runs on a bumpy and uneven road surface, the upper mounting plate and the lower mounting plate move relatively, the elastic element stretches, and the height adjusting bolt can play a role in guiding the elastic element; the elastic acting force exerted by the elastic element on the upper mounting plate is smaller than the downward load borne by the upper mounting plate, the acting force generated by the elastic element is not enough to provide the actually required supporting force, and the elastic element plays a role in shock absorption;

an upper threading hole is arranged at the center of the upper mounting plate, the upper threading hole is a rectangular hole and a through hole which is arranged on the upper mounting plate in a penetrating way along the plate thickness direction, and the upper threading hole is used for guiding related lines of the steering wheel and a driver thereof to a vehicle body control cabinet; the four avoidance holes are symmetrically arranged around the upper threading hole, the four height adjusting bolts are also symmetrically arranged around the upper threading hole, and the two guide mechanisms are symmetrically arranged at two sides of the upper threading hole;

the lower mounting plate also comprises a lower boss arranged on the mounting plate body, the lower boss is positioned below the mounting plate body and fixedly connected with the mounting plate body, the lower boss is positioned between the mounting plate body and the large gear and the small gear of the steering wheel, and the lower boss is used for preventing the mounting plate body from being simultaneously contacted with the large gear and the small gear of the steering wheel and protecting the gear structure in the steering wheel; the lower boss is of a circular ring-shaped structure, the axis of the lower boss is parallel to the axis of the height adjusting bolt, the central hole of the lower boss is a lower threading hole, and the lower threading hole is used for wiring of related electric parts.
2. The AGV steering wheel connection device of claim 1, wherein: the guide mechanism sets up a plurality ofly, and all guide mechanism are symmetrical arrangement.
3. The AGV steering wheel connection device of claim 1, wherein: go up the automobile body coupling of mounting panel through bolt and AGV dolly, go up the mounting panel and have a plurality of last mounting holes that let the bolt pass, go up the mounting hole and be waist type hole.
4. The AGV steering wheel connection device of claim 1, wherein: the upper mounting plate is of an X-shaped structure, the number of the upper mounting holes is four, the four upper mounting holes are distributed in a rectangular mode, and the upper mounting holes are located in one corner of the upper mounting plate respectively.