A shock absorbing stroke detection device for agricultural machinery suspension

Abstract

The present invention relates to the technical field of suspension detection. The application discloses a shock-absorbing stroke detection device for a suspension of agricultural machinery, comprising an upright column, a crossbeam fixedly mounted on the top of the upright column, a central diversion cavity arranged near the middle of the crossbeam, stroke holes arranged at both ends of the central diversion cavity, and the stroke hole extends to one end of the crossbeam, a telescopic arm is arranged inside the stroke hole in a telescopic cooperation manner, a transmission device is movably sleeved at one end of the telescopic arm, during the process of the tire being pressed down, the transmission device is subjected to the force from the tire squeezing, under which the transmission device pushes the telescopic arm and retracts into the inside of the stroke hole, the spacing between the transmission devices interacting with the tire increases, the conveyor belt between the transmission devices is bent and the bent portion fits with the surface of the tire, this detection method is more in line with reality, and can simulate the situation where the softer soil in the field fits with the tire, so that the test data is more in line with reality.

Description

Technical Field

[0001] The present application relates to the technical field of suspension detection, and in particular to a shock absorbing stroke detection device for a suspension of an agricultural machinery. Background Art

[0002] With the advancement of science and technology, various agricultural machinery have gradually entered the farmland, which has played a role in reducing the labor burden of farmers, thereby improving agricultural productivity and reducing the human resources consumed by agricultural production. It is a big step in the process of agricultural development. Due to the complex road conditions in the fields, there are higher requirements for the shock absorption effect of agricultural machinery in poor road conditions. In order to ensure that agricultural machinery can pass through various sections smoothly, the suspension of agricultural machinery needs to be tested before leaving the factory.

[0003] Announcement No. CN212903923U proposes a shock-absorbing stroke detection device for agricultural machinery suspension. The bulges on the surface of the conveyor belt are used to simulate various road conditions on the land. The tires are fixed together with the suspension, and the wheels are fitted to the surface of the conveyor belt. During the rotation of the conveyor belt, the wheels will be driven to rotate synchronously. The ups and downs of the micrometer are used to detect the shock-absorbing effect of the agricultural machinery suspension, and finally the shock-absorbing effect of the agricultural machinery suspension can be learned.

[0004] Although the above-mentioned device can detect the shock-absorbing effect of agricultural machinery suspension, there are still certain limitations in the actual process. Since the wheel in the device is located directly above the first roller, the first roller cannot achieve the fit between the conveyor belt and the tire through its own deformation, and cannot simulate the state of the tire running in soft soil, which makes the test result different from the actual shock-absorbing effect, resulting in a decrease in the accuracy of the data. In this regard, the present application document proposes a shock-absorbing stroke detection device for an agricultural machinery suspension, aiming to solve the above-mentioned problems. Summary of the invention

[0005] The present application proposes a shock absorbing stroke detection device for agricultural machinery suspension, which can better simulate the contact state between the tire and the soft ground and the softness of the simulated ground can be adjusted, so as to solve the problem that the simulated state in traditional equipment cannot fit the actual situation.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a shock-absorbing stroke detection device for an agricultural machinery suspension, comprising: a telescopic machine, the number of the telescopic machines is four, a bottom plate is fixedly installed at the bottom of the telescopic machine, a connecting frame is fixedly installed at the top of the output shaft of the telescopic machine, the number of the connecting frames is two, and they are arranged in the same direction as the bottom plate, a power machine is fixedly installed at the outer side of the connecting frame near the two ends, a power roller is movably sleeved at the inner side of the connecting frame near the two ends, the output shaft of the power machine is connected to one end of the power roller, a conveyor belt is sleeved on the outer surface of the power roller, a pressure regulating device is arranged at a position below the conveyor belt on the top of the bottom plate, and a fixing device is fixedly installed at a position near the back of the top of the bottom plate;

[0007] Furthermore, a carrying device is installed on the top of the base plate and is located on both sides of the conveyor belt. The number of the carrying devices is three and they are distributed in a linear array.

[0008] Furthermore, the outer surface of the conveyor belt is provided with protrusions of different specifications.

[0009] Furthermore, the pressure regulating device includes an air compressor, and a pressure-conducting pipe is fixedly installed at the output end of the air compressor. Pressure-conducting holes are provided on both sides of the pressure-conducting pipe. The pressure-conducting holes are distributed in a linear array, and the pressure-conducting holes are connected to the supporting device through a pipeline.

[0010] Further, the supporting device includes a column, a crossbeam is fixedly installed on the top of the column, a central diversion cavity is arranged near the middle of the crossbeam, travel holes are arranged at both ends of the central diversion cavity, and the travel hole extends to one end of the crossbeam, a telescopic arm is arranged inside the travel hole in a telescopic manner, a transmission device is arranged on a movable sleeve at one end of the telescopic arm, a return spring is clamped at the end of the telescopic arm, one end of the return spring is connected to a protrusion arranged at the end of the travel hole, an air guide channel is arranged near the middle of the bottom of the inner wall of the central diversion cavity, and the air guide channel extends to a position near the bottom of one side of the column, and one end of the air guide channel is connected to the pressure guide hole through a pipeline.

[0011] Furthermore, the transmission device includes a transmission roller, both ends of which are provided with limiting shafts, one end of which is fixedly mounted with a rotating ring, a movable sleeve on the outer surface of the rotating ring is provided with a tension sensor, and a rope connector is fixedly mounted on the outer surface of the tension sensor near the bottom.

[0012] Furthermore, the fixing device comprises a travel frame, an adjusting bolt is sleeved inside the travel frame, a suspension bracket is sleeved on the outer surface of the adjusting bolt by threaded fitting, and a tire is fixedly mounted on one side of the suspension bracket.

[0013] Furthermore, the tire is located directly above the middle position of the adjacent bearing device.

[0014] Furthermore, two cable connectors which are closest to the tire are connected via an elastic cord.

[0015] This application has the following beneficial effects.

[0016] Compared with the device involved in the comparative document, this device is capable of better simulating the state of tires fitting onto soft surfaces such as soil, which is more in line with the state of agricultural machinery suspension during driving in the field, and the softness of the simulated ground is adjustable, which can be adjusted according to different needs. In addition, this device no longer uses a micrometer, a testing method with large errors, but uses the change in the spacing between transmission devices to calculate the shock absorbing effect of the suspension, which has higher accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of the specification, illustrate the embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0018] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 The structural pressure regulating device of the present invention;

[0021] Figure 3 It is the structural bearing device of the present invention;

[0022] Figure 4 This is a main diagram of the structural bearing device of the present invention;

[0023] Figure 5 It is a front view of the structural bearing device of the present invention;

[0024] Figure 6 The structure of the present invention Figure 5 Sectional view in the middle AA direction;

[0025] Figure 7 The structure of the present invention Figure 5 Cross-section in the middle BB direction;

[0026] Figure 8 It is a diagram of the transmission device of the structure of the present invention;

[0027] Fig. 9 This is a diagram of the structural fixing device of the present invention;

[0028] Fig.10It is a schematic diagram of the connection of the structural tension sensor of the present invention.

[0029] In the figure; 10, telescopic machine; 11, bottom plate; 12, connecting frame; 13, power machine; 14, power roller; 15, conveyor belt; 16, pressure regulating device; 161, air compressor; 162, pressure pipe; 163, pressure hole; 17, fixing device; 171, travel frame; 172, adjusting bolt; 173, suspension bracket; 174, tire; 20, bearing device; 201, column; 202, crossbeam; 203, central diversion chamber; 204, travel hole; 205, telescopic arm; 206, transmission device; 2061, transmission roller; 2062, limit shaft; 2063, rotating ring; 2064, tension sensor; 2065, rope connecting device; 207, reset spring; 208, air guide channel. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] A shock absorbing travel detection device for agricultural machinery suspension, please refer to Figure 1 , including: a telescopic machine 10, the number of the telescopic machines 10 is four, a bottom plate 11 is fixedly installed at the bottom of the telescopic machine 10, a connecting frame 12 is fixedly installed at the top of the output shaft of the telescopic machine 10, the number of the connecting frames 12 is two, and they are arranged in the same direction as the bottom plate 11, a power machine 13 is fixedly installed at the outer side of the connecting frame 12 near the two ends, a power roller 14 is movably sleeved at the inner side of the connecting frame 12 near the two ends, the output shaft of the power machine 13 is connected to one end of the power roller 14, and the outer surface of the power roller 14 is sleeved with a conveyor belt 15, a pressure regulating device 16 is arranged at a position below the conveyor belt 15 on the top of the bottom plate 11, and a fixing device 17 is fixedly installed at a position near the back of the top of the bottom plate 11;

[0032] The carrying device 20 is installed on the top of the bottom plate 11 and is located on both sides of the conveyor belt 15. There are three carrying devices 20, which are distributed in a linear array.

[0033] See also Figure 1 The outer surface of the conveyor belt 15 is provided with protrusions of different specifications.

[0034] See also Figure 2The pressure regulating device 16 includes an air compressor 161, and a pressure pipe 162 is fixedly installed at the output end of the air compressor 161. Pressure holes 163 are arranged on both sides of the pressure pipe 162. The pressure holes 163 are distributed in a linear array, and the pressure holes 163 are connected to the supporting device 20 through a pipeline.

[0035] See also Figure 1-Figure 7 The carrying device 20 includes a column 201, a crossbeam 202 is fixedly installed on the top of the column 201, a central diversion chamber 203 is arranged near the middle of the crossbeam 202, both ends of the central diversion chamber 203 are provided with travel holes 204, and the travel hole 204 extends to one end of the crossbeam 202, and a telescopic arm 205 is arranged inside the travel hole 204 in a telescopic manner, and a transmission device 206 is movably sleeved on one end of the telescopic arm 205, and a return spring 207 is clamped at the end of the telescopic arm 205, and one end of the return spring 207 is connected to a protrusion arranged at the end of the travel hole 204, and an air guide channel 208 is arranged near the middle of the bottom of the inner wall of the central diversion chamber 203, and the air guide channel 208 extends to a position near the bottom of one side of the column 201, and one end of the air guide channel 208 is connected to the pressure guide hole 163 through a pipeline. When the fixing device 17 controls the tire 174 to press down and is in contact with the surface of the conveyor belt 15 The transmission device 206 pushes the telescopic arm 205 and retracts toward the inside of the travel hole 204. The spacing between the transmission devices 206 interacting with the tire 174 increases, and the conveyor belt 15 located between the transmission devices 206 bends and the bent portion fits with the surface of the tire 174. This detection method is more in line with reality and can simulate the fit between the softer soil in the field and the tire 174, so that the test data is more in line with reality. In the comparative document, the tire is located directly above the first roller, and the first roller cannot achieve the fit between the conveyor belt and the tire through its own deformation, and cannot simulate the state of the tire running in soft soil. There are limitations in the detection process. Therefore, the device involved in this application document has higher practicality.

[0036] See also Figure 2-Figure 3 The space inside the pressure-conducting tube 162 is pressurized by the air compressor 161, and the pressure inside the pressure-conducting tube 162 is transmitted to the inside of the central diversion chamber 203 through the pressure-conducting hole 163, the air-conducting channel 208 and the pipes connected therebetween, so that the resistance of the telescopic arm 205 when it retracts inward is increased, thereby simulating the softness of the soil. During the detection process, the operating state of the suspension shock absorption when the tire 174 travels on soils of different softness can be obtained, further improving the practicality of the device.

[0037] See also Figure 8The transmission device 206 includes a transmission roller 2061, and limit shafts 2062 are set at both ends of the transmission roller 2061. A rotating ring 2063 is fixedly installed at one end of the limit shaft 2062. A tension sensor 2064 is movably sleeved on the outer surface of the rotating ring 2063, and a rope connector 2065 is fixedly installed on the outer surface of the tension sensor 2064 near the bottom.

[0038] See also Fig. 9 The fixing device 17 includes a travel frame 171, an adjusting bolt 172 is sleeved inside the travel frame 171, a suspension bracket 173 is sleeved on the outer surface of the adjusting bolt 172 by threaded fitting, and a tire 174 is fixedly installed on one side of the suspension bracket 173.

[0039] See also Figure 1 and Fig. 9 , characterized in that the tire 174 is located directly above the middle position of the adjacent supporting device 20.

[0040] See also Figure 1 and Figure 6-Figure 10 The two rope connectors 2065 closest to the tire 174 are connected by elastic ropes. When the conveyor belt 15 rotates, the irregular protrusions on the outer surface of the conveyor belt 15 will contact the bottom of the tire 174. During the contact process, the distance between the outer surface of the tire 174 and the conveyor belt 15 increases, so that the pressure of the tire 174 on the transmission device 206 increases and further causes the telescopic arm 205 to retract into the travel hole 204. The degree of further retraction can reflect the shock-absorbing effect of the tire 174 suspension from the side. When the travel hole 204 further retracts, The elastic rope connected to the two connectors 2065 is stretched, and the connector 2065 can try to monitor the elastic force of the elastic rope. The higher the elastic force is, the worse the shock absorption effect of the tire 174 suspension is, and the lower the elastic force is, the better the shock absorption effect of the tire 174 is. The micrometer used in the comparative document is in direct contact with the tire. As the tire rotates, the contact part of the micrometer and the tire will vibrate slightly and wear, resulting in reduced measurement accuracy. The detection method of the present application document avoids this problem well and improves the stability of the device during the detection process.

[0041] When the device needs to simulate the state of the tire 174 running on a hard road, the elastic ropes connected to the two connecting ropes 2065 can be replaced with ones that are not easily deformed. At this time, the telescopic arm 205 cannot retract into the inside of the travel hole 204. At this time, the adjustment bolt 172 controls the suspension bracket 173 to press down. The pressure of the tire 174 on the transmission device 206 is not enough to cause the transmission device 206 to move. At this time, the tire 174 can be simulated to avoid running on a hard road, thereby improving the convenience of using the device.

[0042] The method of use of the present invention is as follows:

[0043] During use, the fixing device 17 controls the tire 174 to press down and contact the surface of the conveyor belt 15, and the surface of the conveyor belt 15 is bent. At the same time, during the process of the tire 174 pressing down, the transmission device 206 is subjected to the force of squeezing from the tire 174. Under this force, the transmission device 206 pushes the telescopic arm 205 and retracts into the inside of the stroke hole 204. The spacing between the transmission devices 206 interacting with the tire 174 increases, and the conveyor belt 15 located between the transmission devices 206 is bent and the bent part is in contact with the surface of the tire 174. This detection method is more in line with reality. The fit can simulate the fit between the soft soil in the field and the tire 174, so that the test data is more in line with the actual situation. The air compressor 161 pressurizes the space inside the pressure pipe 162. The pressure inside the pressure pipe 162 is transmitted to the inside of the central diversion cavity 203 through the pressure hole 163, the air channel 208 and the pipes connected therebetween, so that the resistance of the telescopic arm 205 when it retracts inward is increased, thereby simulating the softness of the soil. During the test, the operating state of the suspension shock absorption when the tire 174 travels on soils of different softness can be obtained. When the conveyor belt 15 rotates During the process, the irregular protrusions arranged on the outer surface of the conveyor belt 15 will contact the bottom of the tire 174. During the contact process, the distance between the outer surface of the tire 174 and the conveyor belt 15 increases, so that the tire 174 increases the squeezing force on the transmission device 206 and further causes the telescopic arm 205 to retract into the inside of the travel hole 204. The degree of further retraction can reflect the shock-absorbing effect of the tire 174 suspension from the side. When the travel hole 204 further retracts, the elastic ropes connected to the two rope connectors 2065 are stretched. The rope connector 2065 can monitor the elastic force of the elastic ropes. The elastic force is improved. The higher the degree, the worse the shock absorption effect of the tire 174 suspension, and the lower the degree of elastic force improvement, the better the shock absorption effect of the tire 174. When the device needs to simulate the tire 174 driving on a hard road, the elastic rope connected to the two connecting ropes 2065 can be replaced with one that is not easy to deform. At this time, the telescopic arm 205 cannot retract into the travel hole 204. At this time, the adjusting bolt 172 controls the suspension bracket 173 to press down. The pressure of the tire 174 on the transmission device 206 is not enough to cause the transmission device 206 to move. At this time, it can simulate the tire 174 avoiding driving on a hard road.

Claims

1. A device for detecting shock absorbing stroke of agricultural machinery suspension, characterized in that: include: A telescopic machine (10), wherein the number of the telescopic machines (10) is four, a bottom plate (11) is fixedly installed at the bottom of the telescopic machine (10), a connecting frame (12) is fixedly installed at the top of the output shaft of the telescopic machine (10), the number of the connecting frames (12) is two, and they are arranged in the same direction as the bottom plate (11), a power machine (13) is fixedly installed at the outer side of the connecting frame (12) near the two ends, a power roller (14) is movably sleeved at the inner side of the connecting frame (12) near the two ends, the output shaft of the power machine (13) is connected to one end of the power roller (14), the outer surface of the power roller (14) is sleeved with a conveyor belt (15), a pressure regulating device (16) is arranged at a position below the conveyor belt (15) at the top of the bottom plate (11), and a fixing device (17) is fixedly installed at a position near the back of the top of the bottom plate (11); A carrying device (20), the carrying device (20) is installed on the top of the bottom plate (11) and is located at positions on both sides of the conveyor belt (15), the number of the carrying devices (20) is three, and they are distributed in a linear array, the pressure regulating device (16) comprises an air compressor (161), a pressure pipe (162) is fixedly installed at the output end of the air compressor (161), and pressure holes (163) are provided on both sides of the pressure pipe (162), and the pressure holes (163) are distributed in a linear array. The pressure-conducting hole (163) is connected to the bearing device (20) through a pipeline; the bearing device (20) comprises a column (201), a crossbeam (202) is fixedly mounted on the top of the column (201), a central flow-dividing cavity (203) is arranged near the middle of the crossbeam (202), both ends of the central flow-dividing cavity (203) are provided with travel holes (204), and the travel hole (204) extends to one end of the crossbeam (202), and the interior of the travel hole (204) is extended by a telescopic fit. A telescopic arm (205) is provided in a movable sleeve at one end of the telescopic arm (205) and a transmission device (206) is provided. A return spring (207) is clamped at the end of the telescopic arm (205). One end of the return spring (207) is connected to a protrusion provided at the end of the travel hole (204). An air guide channel (208) is provided at a position near the middle of the bottom of the inner wall of the central diversion cavity (203). The air guide channel (208) extends to a position near the bottom of one side of the column (201). One end of the channel (208) is connected to the pressure-conducting hole (163) through a pipeline; the transmission device (206) comprises a transmission roller (2061), two ends of the transmission roller (2061) are provided with limit shafts (2062), one end of the limit shaft (2062) is fixedly mounted with a rotating ring (2063), the outer surface of the rotating ring (2063) is provided with a tension sensor (2064), and a rope connector (2065) is fixedly mounted at a position close to the bottom of the outer surface of the tension sensor (2064);The fixing device (17) comprises a travel frame (171), an adjusting bolt (172) is sleeved inside the travel frame (171), a suspension bracket (173) is sleeved on the outer surface of the adjusting bolt (172) by means of threaded engagement, and a tire (174) is fixedly mounted on one side of the suspension bracket (173). ; 2. The agricultural machinery suspension damping stroke detection device according to claim 1, characterized in that: The outer surface of the conveyor belt (15) is provided with protrusions of different specifications.

3. The agricultural machinery suspension damping stroke detection device according to claim 1, characterized in that: The tire (174) is located directly above the middle position of the adjacent supporting device (20).

4. The agricultural machinery suspension damping stroke detection device according to claim 1, characterized in that: The two rope connectors (2065) closest to the tire (174) are connected via an elastic rope.

Images