CN214584017U

CN214584017U - Gap bridge overload protection test device

Info

Publication number: CN214584017U
Application number: CN202122308313.1U
Authority: CN
Inventors: 杨志广; 张玉增; 张克岩
Original assignee: Weichai Lovol Heavy Industry Co Ltd
Current assignee: Weichai Lovol Intelligent Agricultural Technology Co Ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2021-11-02
Anticipated expiration: 2031-09-24

Abstract

The utility model relates to a gap bridge overload protection test device belongs to the relevant technical field of agricultural machine. The testing device comprises a first motor, a gap bridge driving shaft, a gap bridge main body, a lower roll assembly and an auger, wherein the gap bridge driving shaft and the lower roll assembly are respectively installed on the gap bridge main body; the screw feeder is arranged at the feeding port of the lower roller assembly, and a material conveying device is arranged at the lower side of the front end of the screw feeder. Provide power through the motor to carry the material to the screw feeder through material conveyor, simulate actual gap bridge and carry operating mode, can inspect safety clutch's life, can detect the weak point of gap bridge driving shaft, conveying chain, harrow board, chain, safety clutch etc. under the same moment of torsion effect, provide data support for production research etc..

Description

Gap bridge overload protection test device

Technical Field

The utility model relates to a gap bridge test device, concretely relates to gap bridge overload protection test device.

Background

At present, grain combine harvesters produced by agricultural enterprises are directly used for field tests of crops, the blocking working condition of an agricultural machine gap bridge cannot be reproduced in advance in time, and although a safety clutch can protect the gap bridge overload, the problems are discovered relatively late, so that the reliability and the development efficiency of products are influenced.

Disclosure of Invention

The utility model aims to solve the technical problem that to prior art not enough, provide a gap bridge overload protection test device.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a gap bridge overload protection test device comprises a first motor, a gap bridge driving shaft, a gap bridge main body, a lower roll assembly and an auger, wherein the gap bridge driving shaft and the lower roll assembly are respectively installed on the gap bridge main body; the screw conveyer is installed at the feeding opening of the lower roller assembly, and a material conveying device is installed on the lower side of the front end of the screw conveyer.

The utility model has the advantages that: the utility model discloses a gap bridge overload protection test device, provide power for gap bridge driving shaft and lower roll device through first motor, and carry the material to the screw feeder through material conveyor, through constantly increasing material feeding volume, simulate actual gap bridge and carry operating mode, make the gap bridge appear blocking in the laboratory, can inspect safety clutch's life, can be under the same moment of torsion effect, detect the weak point of different products (gap bridge driving shaft, the conveying chain, the harrow board, the chain, safety clutch etc.), can in time discover the problem and solve the problem, the reliability and the development efficiency of product have been improved, for production research etc. provide data support.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the material conveying device comprises a conveying belt and a second motor, and the second motor is in transmission connection with the conveying belt and drives the conveying belt to convey materials to the auger.

The beneficial effect of adopting the further scheme is that: the second motor drives the conveying belt to convey materials to the auger, and the speed of conveying the materials can be adjusted by adjusting the rotating speed of the second motor and the like, so that the actual working condition can be effectively simulated.

Further, the gap bridge driving shaft is in transmission connection with the auger through a roller chain.

Further, the lower roll assembly comprises a gap bridge lower roll welding part and a rocker welding part, the upper end of the gap bridge lower roll welding part is connected with the gap bridge main body through an elastic floating component, and the two axial ends of the gap bridge lower roll welding part are respectively connected with the gap bridge main body through the rocker welding part in a vertically floating mode.

The beneficial effect of adopting the further scheme is that: the rocker welding can provide floating support for the gap bridge lower roller welding, and the elastic floating component can provide resilience acting force for the gap bridge lower roller floating.

Furthermore, the elastic floating component comprises a spring and a guide rod, one end of the guide rod is assembled and connected with the lower roller, the other end of the guide rod is movably connected with the gap bridge main body, and the spring is sleeved on the outer side of the guide rod and is respectively abutted to the lower roller assembly and the gap bridge main body.

Furthermore, a plurality of driving chain wheels are arranged on the bridge driving shaft, each driving chain wheel is respectively connected with the corresponding conveying chain in a transmission manner, and the lower roller is provided with a driving rib in friction fit with the corresponding conveying chain.

The beneficial effect of adopting the further scheme is that: the gap bridge driving shaft drives the conveying chain to operate through the driving chain wheel so as to drive the harrow plate on the conveying chain to move, the conveying chain is in friction fit with the transmission ribs assembled on the lower roll, and the lower roll is driven to assemble and operate by using friction force.

Further, when the harrow plate on the conveying chain is positioned right below the lower roller assembly, the gap between the harrow plate and the bottom plate of the gap bridge main body is 28-33 mm.

The beneficial effect of adopting the further scheme is that: the gap between the harrow plate and the bottom plate under the lower roller assembly is maintained within a preset range by adjusting the compression amount of the spring, so that the actual working condition of the gap bridge can be well simulated.

Further, the transmission belt is a V-belt.

Furthermore, the gap bridge driving shaft is also connected with a wireless torque sensor.

The beneficial effect of adopting the further scheme is that: the wireless torque sensor node is simple and convenient to use, and only the sensor node, a battery and a strain gauge are required to be fixed on a bridge driving shaft, the strain value of the bridge driving shaft is directly measured and wirelessly transmitted to a gateway or a routing node in real time, and the torque value is calculated by using a strain torque conversion formula in acquisition control software.

Drawings

Fig. 1 is a schematic view of the structure of the gap bridge overload protection test device of the present invention;

FIG. 2 is a schematic structural view of the bridge driving shaft of the present invention;

FIG. 3 is a schematic view of the welded lower roller of the gap bridge of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure of the lower roller welding of the gap bridge of the present invention;

FIG. 5 is a schematic diagram of a side view of a gap bridge structure of the gap bridge overload protection testing device of the present invention;

fig. 6 is an enlarged schematic view of a portion a in fig. 5.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a first motor; 2. a transmission belt; 3. a gap bridge main body; 31. a gap bridge driving shaft; 311. a drive sprocket; 312. a drive pulley; 313. a roller chain; 33. welding the lower roller of the gap bridge; 34. welding the rocker; 35. a safety clutch; 36. a base plate; 37. a drive rib; 38. a conveyor chain; 39. raking a plate; 6. an elastic floating member; 7. a second motor; 71. a conveyor belt; 8. a screw conveyor; 9. a cutting table body.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 6, the gap bridge overload protection test device of the present embodiment includes a first motor 1, a gap bridge driving shaft 31, a gap bridge main body 3, a lower roll assembly and an auger 8, where the gap bridge driving shaft 31 and the lower roll assembly are respectively installed on the gap bridge main body 3, the first motor 1 is in transmission connection with the gap bridge driving shaft 31 through a transmission belt 2, the gap bridge driving shaft 31 is installed with a safety clutch 35, the gap bridge driving shaft 31 drives a conveying chain 38 to operate through a driving sprocket 311, and the conveying chain 38 drives the lower roll assembly to rotate at the same time; the material feeding device is characterized in that the auger 8 is arranged at a feeding port of the lower roller assembly, and a material conveying device is arranged on the lower side of the front end of the auger 8.

Specifically, the first motor 1 is in transmission connection with the driving pulley 312 on the intermediate driving shaft 31 through the transmission belt 2, so as to drive the intermediate driving shaft 31 to operate. The first motor 1 can be a variable frequency speed regulating motor.

As shown in fig. 1, the material conveying device of this embodiment includes a conveying belt 71 and a second motor 7, and the second motor 7 is in transmission connection with the conveying belt 71 and drives the conveying belt 71 to convey the material to the auger 8. The second motor drives the conveying belt to convey materials to the auger, and the speed of conveying the materials can be adjusted by adjusting the rotating speed of the second motor and the like, so that the actual working condition can be effectively simulated.

As shown in fig. 1, the bridge driving shaft 31 of the present embodiment is in transmission connection with the auger 8 through a roller chain 313.

As shown in fig. 1 to 4, the lower roller assembly of this embodiment includes a gap bridge lower roller welding 33 and a rocker welding 34, the upper end of the gap bridge lower roller welding 33 is connected to the gap bridge main body 3 through an elastic floating component 6, and the axial two ends of the gap bridge lower roller welding 33 are connected to the gap bridge main body 3 through the rocker welding 34 in a manner of floating up and down. The rocker welding can provide floating support for the gap bridge lower roller welding, and the elastic floating component can provide resilience acting force for the gap bridge lower roller welding floating.

As shown in fig. 5, in a preferred embodiment of the present invention, the elastic floating component 6 includes a spring and a guide rod, one end of the guide rod is assembled and connected with the lower roller, the other end of the guide rod is movably connected with the gap main body 3, and the spring is sleeved outside the guide rod and is respectively abutted to the lower roller assembly and the gap main body 3. The spring may provide a spring back force for the float up and down of the roller bridge seam 33.

As shown in fig. 2, the bridge driving shaft 31 of this embodiment is provided with a plurality of driving sprockets 311, each driving sprocket 311 is in transmission connection with a corresponding conveying chain 38, and the lower roller is provided with a driving rib 37 in friction fit with the corresponding conveying chain 38. The gap bridge driving shaft drives the conveying chain and the rake plate on the conveying chain to operate through the driving chain wheel, the conveying chain is in friction fit with the transmission ribs assembled on the lower roller, and the lower roller is driven to be assembled and operated by friction force. For example, three driving sprockets 311 can be disposed on the bridge driving shaft 31, and each driving sprocket 311 is engaged with one of the conveying chains 38 and drives the corresponding conveying chain 38 to run.

As shown in fig. 5 and 6, when the harrow plate 39 of the conveyor chain 38 of the present embodiment is located right below the lower roller assembly, the gap h between the harrow plate 39 and the bottom plate 36 of the bridge main body 3 is 28 to 33 mm. The gap between the harrow plate and the bottom plate under the lower roller assembly is maintained within a preset range by adjusting the compression amount of the spring, so that the actual working condition of the gap bridge can be well simulated.

The transmission belt 2 of the present embodiment is a V-belt.

The bridge driving shaft 31 of the present embodiment is further connected with a wireless torque sensor. The wireless torque sensor node is simple and convenient to use, and only the sensor node, a battery and a strain gauge are required to be fixed on a bridge driving shaft, the strain value of the bridge driving shaft is directly measured and wirelessly transmitted to a gateway or a routing node in real time, and the torque value is calculated by using a strain torque conversion formula in acquisition control software.

The working process of the gap bridge overload protection test device of the embodiment is that the gap bridge overload protection test device is installed on the cutting table body 9 and is tested under the set torque and the set rotating speed. First, the gap bridge drive is combined and brought to the required operating speed (305 rpm, slightly different speeds for different types of gap bridge), ready to be disconnected when required. Then, a high-to-valley ratio wheat or straw is used and the material is distributed onto the conveyor belt 71, creating a feed plugging condition. The conveyor belt 71 is started, and the material feeding amount is continuously increased until the safety clutch 35 is separated (the set torque is 800 N.m). After the jam, the operation of the conveyor 71 is stopped, and the process is repeated a plurality of times. The safety clutch 35 disengages all transmissions, checks the status of the safety clutch 35 and records any damaged parts suffered. The gap bridge overload protection test device of the embodiment is used for carrying out experiments, and can judge whether the setting of the safe clutch torque value is reasonable (the safe clutch is not blocked and separated or not after being blocked and is unreasonable), and judge whether the safe clutch is reliable (after a plurality of safe clutch separation experiments, the attenuation of the set torque value cannot exceed 10%).

Wherein, during the experiment, the torque attenuation of the safety clutch set value between two tests should not be more than 1%. If greater than this value, the test is invalid and will require re-verification.

The gap bridge overload protection test device of this embodiment, provide power for gap bridge driving shaft and lower roll device through first motor, and carry the material to the screw feeder through material conveyor, through constantly increasing material feeding volume, simulate actual gap bridge and carry operating mode, make the gap bridge appear blockking in the laboratory, can inspect safety clutch's life, can be under the same moment of torsion effect, detect the weak point of different products (gap bridge driving shaft, the conveying chain, the harrow board, the chain, safety clutch etc.), can in time discover the problem and solve the problem, the reliability and the development efficiency of product have been improved, provide data support for production research etc..

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "bottom", "inner", "outer", "axial", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A gap bridge overload protection test device is characterized by comprising a first motor, a gap bridge driving shaft, a gap bridge main body, a lower roll assembly and an auger, wherein the gap bridge driving shaft and the lower roll assembly are respectively installed on the gap bridge main body; the screw conveyer is installed at the feeding opening of the lower roller assembly, and a material conveying device is installed on the lower side of the front end of the screw conveyer.

2. The gap bridge overload protection test device according to claim 1, wherein the material conveying device comprises a conveying belt and a second motor, and the second motor is in transmission connection with the conveying belt and drives the conveying belt to convey materials to the auger.

3. The device for testing bridge crossing overload protection according to claim 1, wherein the bridge crossing driving shaft is in transmission connection with the auger through a roller chain.

4. The device for testing the overload protection of the gap bridge of claim 1, wherein the lower roller assembly comprises a gap bridge lower roller welding part and a rocker welding part, the upper end of the gap bridge lower roller welding part is connected with the gap bridge main body through an elastic floating component, and the axial two ends of the gap bridge lower roller welding part are respectively connected with the gap bridge main body through the rocker welding part in a vertically floating manner.

5. The device for testing overload protection of a gap bridge of claim 4, wherein the elastic floating component comprises a spring and a guide rod, one end of the guide rod is assembled and connected with the lower roller, the other end of the guide rod is movably connected with the gap bridge main body, and the spring is sleeved outside the guide rod and is respectively abutted against the lower roller assembly and the gap bridge main body.

6. The device for testing overbridge protection as claimed in claim 1, wherein the overbridge driving shaft is provided with a plurality of driving sprockets, each driving sprocket is connected with a corresponding conveying chain, and the lower roller is provided with driving ribs in friction fit with the corresponding conveying chain.

7. The device for testing bridge crossing overload protection according to claim 1, wherein when the harrow plate on the conveying chain is positioned right below the lower roller assembly, the clearance between the harrow plate and the bottom plate of the bridge crossing main body is 28-33 mm.

8. The apparatus of claim 1, wherein the transmission belt is a V-belt.

9. The device for testing bridge crossing overload protection according to claim 1, wherein the bridge crossing driving shaft is further connected with a wireless torque sensor.