Agricultural machinery-based braking performance detection device

Abstract

The application discloses a kind of based on braking performance detection device of agricultural machinery, it is related to agricultural machinery detection equipment technical field.The present application includes two mutually symmetrical front end seats;Two front end seats end are all sleeved with rear end seat;Front end seat and rear end seat opposite end face are all clamped with end card seat;Two end card seats are sleeved with connecting bridge plate between;Rear end seat inner top annular array is equipped with cylinder;Two adjacent cylinders are connected by meshing toothed belt transmission between each other;Wherein, between one of the cylinder located in two rear end seats is sleeved with rotating shaft.The present application is used by the cooperation of front end seat, rear end seat, end card seat, connecting bridge plate, cylinder, meshing toothed belt, rotating shaft and seat plate, so that multiple cylinders rotate synchronously and drive wheel rotation, its continuity is stronger, guarantees the accuracy of agricultural machinery braking performance detection data, and the contact surface between wheel is larger, avoid the condition of skidding, meet the needs of actual use.

Description

Technical Field

[0001] This invention belongs to the technical field of agricultural machinery testing equipment, and in particular relates to a braking performance testing device for agricultural machinery. Background Technology

[0002] The braking performance of agricultural machinery such as tractors directly affects driving safety. Many tractor accidents are caused by poor braking performance. Therefore, braking performance testing is an important part of the annual inspection and review of tractors.

[0003] Existing braking performance testing equipment for agricultural machinery typically employs a washboard-type structure, such as the "Electric Washboard-Type Agricultural Vehicle Braking Performance Testing Platform" disclosed in Chinese Patent CN203758747U. In this embodiment, during testing, the agricultural vehicle to be tested drives over two parallel testing lanes. As it passes the axle load testing platform, a suspended pressure sensor feeds back the gravity it experiences and transmits the magnitude of the gravity signal to an external data processing device via a data cable, thereby collecting the axle load data of the tested vehicle. When the agricultural vehicle to be tested drives onto the testing plate, the power supply to the electric hydraulic device is turned on, the electric hydraulic pump starts working, injecting hydraulic oil into the hydraulic cylinder. The shaft end of the hydraulic cylinder moves forward under the pressure of the hydraulic oil, generating pressure on the pressure sensor. The system generates a forward thrust on the detection plate. Since the agricultural vehicle being tested is parked on top of the detection plate, the detection plate is simultaneously subjected to a backward braking force generated by the vehicle. The pressure sensor receives the backward thrust and generates a signal, which is transmitted to an external data processing device. After processing by the external data processing device, a test of the braking performance of agricultural machinery is completed. However, in actual use, the detection plate is moved by a hydraulic cylinder, but the overall length of the detection plate is limited. When the detection plate moves as a whole, the stroke of the wheels of the agricultural machinery is limited, resulting in poor continuity and seriously affecting the accuracy of the braking performance test data. In addition, the contact area between the wheels and the detection plate is small, which easily causes the detection plate to slip against the wheels during movement, failing to meet the needs of actual use. Summary of the Invention

[0004] The purpose of this invention is to provide a braking performance testing device for agricultural machinery. By using a front seat, a rear seat, an end clamp, a connecting bridge, a roller, a meshing toothed belt, a rotating shaft, and a seat plate in combination, it solves the problem of poor continuity and small contact area in existing washboard-type braking performance testing equipment, which leads to poor accuracy of braking performance testing data.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a braking performance testing device for agricultural machinery, comprising two symmetrically arranged front end seats; a rear end seat is fitted onto the ends of both front end seats; a load-bearing platform is provided on the surface of both front end seats and the rear end seat, and end brackets are engaged with the opposite end faces of the front end seats and the rear end seats; a connecting bridge plate is fitted between the two end brackets; rollers are arranged in a circular array at the top of the rear end seat; adjacent rollers are connected to each other by a meshing toothed belt; a rotating shaft is fitted between one of the rollers located in the two rear end seats; a seat plate is fitted between the opposite bottom faces of the two rear end seats; the center of the seat plate surface is rotatably connected to the rotating shaft; a servo motor is fixedly mounted on the surface of the seat plate; the shaft end of the servo motor is connected to the rotating shaft by a transmission belt.

[0007] As a preferred embodiment of the present invention, the upper surface of the front end seat is provided with a first groove that mates with the load-bearing platform; the end of the upper surface of the front end seat is provided with a first strip-shaped slot in a linear array; the end of the front end seat near the first strip-shaped slot is provided with an insertion hole; and the other end of the front end seat is a sloping structure.

[0008] As a preferred embodiment of the present invention, a second groove is provided at one end of the upper surface of the rear end seat to cooperate with the load-bearing platform; a second strip-shaped slot is provided at the other end of the upper surface of the rear end seat; and a plug rod is provided at one end of the rear end seat near the second strip-shaped slot to cooperate with the insertion hole.

[0009] As a preferred embodiment of the present invention, the bottom surface of the end card holder is provided with a linear array of card strips that cooperate with the first strip card slot and the second strip card slot; one end face of the end card holder is provided with a limiting guide groove that cooperates with the connecting bridge plate.

[0010] As a preferred embodiment of the present invention, an arc-shaped groove is provided on the upper surface of the rear end seat; a limiting slot that cooperates with the seat plate is provided on the bottom side of the rear end seat.

[0011] As a preferred embodiment of the present invention, the two ends of the roller are rotatably connected to the two opposite sides of the arc-shaped groove through ball bearings; the central circumferential side of the roller has two meshing tooth grooves that cooperate with the meshing tooth belt.

[0012] As a preferred embodiment of the present invention, an extension shaft is provided at the end of one of the rollers located inside the arc groove and between the two rear end seats; a connecting sleeve is provided at the end of the extension shaft; a hexagonal insertion hole is provided at the inner end of the connecting sleeve; and a fastening bolt is threadedly connected to the peripheral side of the connecting sleeve near the opening end.

[0013] As a preferred embodiment of the present invention, the cross-sections of both ends of the rotating shaft are hexagonal and are interlocked with hexagonal insertion holes; the peripheral surfaces of both ends of the rotating shaft are linearly arrayed with pin holes that cooperate with fastening bolts; the center position of the rotating shaft is rotatably connected to the base plate via a ball bearing; and the center position of the rotating shaft is provided with a transmission wheel that cooperates with a transmission belt.

[0014] The present invention has the following beneficial effects:

[0015] 1. This invention utilizes a front seat, a rear seat, an end clamp, a connecting bridge plate, rollers, a meshing toothed belt, a rotating shaft, and a seat plate. A servo motor drives the rotating shaft via a transmission belt. Both ends of the rotating shaft are inserted into one of the rollers in the arc-shaped groove. Multiple rollers located in the arc-shaped groove are interconnected via meshing toothed belts, causing multiple rollers to rotate synchronously and drive the wheels to rotate. This provides strong continuity, ensuring the accuracy of braking performance test data for agricultural machinery. Furthermore, the large contact area between the rollers and the wheels prevents slippage and meets the needs of practical use.

[0016] 2. This invention connects the end bracket to the front and rear brackets, and the end brackets located between the ends of the front and rear brackets are connected in series under the action of the connecting bridge plate. At the same time, the end of the rotating shaft is mutually limited and connected to the end of one of the rollers in the arc groove. The whole assembly is easy to disassemble and assemble, and can meet the needs of agricultural machinery of different models and sizes, with strong versatility.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the braking performance testing device based on agricultural machinery according to the present invention.

[0020] Figure 2 This is a cross-sectional schematic diagram of a braking performance testing device based on agricultural machinery.

[0021] Figure 3 This is a schematic diagram of the front-end mount.

[0022] Figure 4 This is a schematic diagram of the back-end mount.

[0023] Figure 5 This is a schematic diagram of the end card holder structure.

[0024] Figure 6 This is a schematic diagram of the drum structure.

[0025] Figure 7 This is a schematic diagram of the rotating shaft.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1-Front end seat, 2-Rear end seat, 3-End bracket, 4-Connecting bridge plate, 5-Roller, 6-Meshing toothed belt, 7-Rotating shaft, 8-Seat plate, 9-Servo motor, 10-Transmission belt, 11-Bearing platform, 101-First channel, 102-First strip slot, 103-Insertion hole, 201-Second channel, 202-Second strip slot, 203-Insertion rod, 204-Arc groove, 205-Limiting slot, 301-Card strip, 302-Limiting guide groove, 501-Meshing toothed groove, 502-Extension end shaft, 503-Connecting end sleeve, 504-Hexagonal insertion hole, 505-Fasting bolt, 701-Pin hole, 702-Transmission wheel. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific Implementation Example 1:

[0030] Please see Figure 1-7As shown, this invention is a braking performance testing device for agricultural machinery, comprising two symmetrically arranged front end seats 1; each of the ends of the two front end seats 1 is fitted with a rear end seat 2; the surfaces of the two front end seats 1 and the rear end seat 2 are provided with a load-bearing platform 11; the upper surface of the front end seat 1 has a first groove 101 that mates with the load-bearing platform 11; the upper surface of the front end seat 1 has a first strip-shaped slot 102 linearly arranged at one end; the end of the front end seat 1 near the first strip-shaped slot 102 has an insertion hole 103; the other end of the front end seat 1 has a beveled structure; the upper surface of the rear end seat 2 has a second groove 201 that mates with the load-bearing platform 11 at one end; the other end of .... The rear seat 2 has a second strip-shaped slot 202; a rod 203 that mates with the insertion hole 103 is provided at one end of the rear seat 2 near the second strip-shaped slot 202; end seats 3 are engaged with the opposite end faces of the front seat 1 and the rear seat 2; a connecting bridge plate 4 is sleeved between the two end seats 3; the bottom surface of the end seats 3 has a linear array of locking strips 301 that mate with the first strip-shaped slot 102 and the second strip-shaped slot 202; a limiting guide groove 302 that mates with the connecting bridge plate 4 is provided on one end face of the end seats 3; rollers 5 are arranged in a ring array at the top of the rear seat 2; adjacent rollers 5 are connected to each other by a meshing toothed belt 6; the two ends of the rollers 5 are connected to the arc-shaped groove 203 by ball bearings. 4. Two opposite sides are rotatably connected; two meshing tooth grooves 501 are opened on the central circumferential side of the roller 5 to cooperate with the meshing tooth belt 6; among them, an extension end shaft 502 is provided at the end of one of the rollers 5 inside the arc-shaped groove 204 and between the two rear end seats 2; a connecting end sleeve 503 is provided at the end of the extension end shaft 502; a hexagonal insertion hole 504 is opened at the inner end of the connecting end sleeve 503; a fastening bolt 505 is threadedly connected to the circumferential side of the connecting end sleeve 503 near the opening end; a rotating shaft 7 is sleeved between one of the rollers 5 inside the two rear end seats 2; a seat plate 8 is sleeved between the opposite bottom surfaces of the two rear end seats 2; an arc-shaped groove is opened on the upper surface of the rear end seat 2. The rear seat 2 has a groove 204; a limiting slot 205 that mates with the seat plate 8 is provided on the bottom side of the rear seat 2; the center of the surface of the seat plate 8 is rotatably connected to the rotating shaft 7; a servo motor 9 is fixedly mounted on the surface of the seat plate 8; the shaft end of the servo motor 9 is connected to the rotating shaft 7 via a transmission belt 10; the cross-sections of both ends of the rotating shaft 7 are hexagonal and are inserted into hexagonal insertion holes 504; pin holes 701 that mate with fastening bolts 505 are linearly arranged on the peripheral sides of both ends of the rotating shaft 7; the center of the rotating shaft 7 is rotatably connected to the seat plate 8 via a ball bearing; a transmission wheel 702 that mates with the transmission belt 10 is provided at the center of the rotating shaft 7.

[0031] A specific application of this embodiment is as follows: the two ends of the seat plate 8 are respectively inserted into the limiting slots 205 of the two rear end seats 2, and the two ends of the rotating shaft 7, which is rotatably connected to the seat plate 8, are respectively inserted into the arc grooves 204 of the rear end seats 2 and rotatably connected to one of the rollers 5. Since the cross-section of the two ends of the rotating shaft 7 is a hexagonal structure and is connected to the hexagonal insertion hole 504 at the end of the connecting end sleeve 503 of the end of the roller 5, and the distance between the two rear end seats 2 is fixed by fastening bolts 505, and the end brackets 3 located at the ends of the two rear end seats 2 are connected to each other by the second strip slot 202 and the end brackets 3 located at the ends of the front end seat 1 are connected in series by the connecting bridge plate 4. The whole assembly is easy to disassemble and assemble, and meets the needs of agricultural machinery of different models and sizes, and has strong versatility.

[0032] The wheels of the agricultural machinery move upwards along the inclined surfaces at the ends of the two front seats 1, and pass sequentially through the front seats 1 and the connecting bridge plate 4. This allows the four wheels of the agricultural machinery to be positioned on the surfaces of the load-bearing platforms 11 set on the surfaces of the two front seats 1 and the two rear seats 2, respectively. The first pressure sensor located inside the load-bearing platform 11 can effectively detect the weight of the agricultural machinery, achieving the purpose of weighing. As the agricultural machinery continues to move forward, when the wheels travel into the arc-shaped grooves 204 of the two rear seats 2, multiple rollers 5 located on the two sides of the arc-shaped grooves 204 and interconnected by meshing racks 6 support the wheels. When the servo motor 9 rotates, it drives the rotating shaft 7 to rotate via the transmission belt 10. When the rotating shaft 7 rotates, it drives the multiple rollers 5 to rotate in the same direction via the meshing racks 6. The second pressure sensor located inside the rollers 5 can effectively detect the backward braking force of the agricultural machinery. Its continuity is strong, ensuring the accuracy of the braking performance test data of the agricultural machinery. Furthermore, the contact surface between the rollers and the wheels is large, avoiding slippage and meeting the needs of practical use.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A braking performance testing device for agricultural machinery, comprising two symmetrically arranged front end seats (1); a rear end seat (2) is fitted onto the ends of both front end seats (1); a load-bearing platform (11) is provided on the surface of both front end seats (1) and their rear end seats (2). Its features are: The front end seat (1) and the rear end seat (2) are each fitted with an end seat (3) on their opposite end faces; a connecting bridge plate (4) is sleeved between the two end seats (3). The rear end seat (2) is provided with rollers (5) arranged in a ring array at the top; two adjacent rollers (5) are connected to each other by meshing toothed belts (6); wherein, a rotating shaft (7) is sleeved between one of the rollers (5) located in the two rear end seats (2). A seat plate (8) is fitted between the bottom opposite surfaces of the two rear end seats (2); the center position of the surface of the seat plate (8) is rotatably connected to the rotating shaft (7); a servo motor (9) is fixedly mounted on the surface of the seat plate (8); the shaft end of the servo motor (9) is connected to the rotating shaft (7) through a transmission belt (10); The front end seat (1) has a first strip slot (102) linearly arranged on the upper surface end, and the rear end seat (2) has a second strip slot (202) linearly arranged on the other end end. The bottom surface of the end seat (3) has a strip (301) linearly arranged to cooperate with the first strip slot (102) and the second strip slot (202). An arc-shaped groove (204) is provided on the upper surface of the rear end seat (2). An extension end shaft (502) is provided at the end of one of the rollers (5) inside the arc-shaped groove (204) and between the two rear end seats (2). A connecting end sleeve (503) is provided at the end of the extension end shaft (502). A hexagonal insertion hole (504) is provided at the inner end of the connecting end sleeve (503). A fastening bolt (505) is threadedly connected to the peripheral side of the connecting end sleeve (503) near the opening end. The cross-sections of both ends of the rotating shaft (7) are hexagonal and are inserted into hexagonal sockets (504); the two circumferential surfaces of the rotating shaft (7) are linearly arrayed with pin holes (701) that cooperate with fastening bolts (505); the center of the rotating shaft (7) is rotatably connected to the seat plate (8) through a ball bearing; the center of the rotating shaft (7) is provided with a transmission wheel (702) that cooperates with the transmission belt (10). The front end seat (1) has a first groove (101) on its upper surface that mates with the load-bearing platform (11); the front end seat (1) has an insertion hole (103) at one end near the first strip slot (102); the other end of the front end seat (1) has a sloping structure. The upper surface of the rear end seat (2) is provided with a second groove (201) that cooperates with the load-bearing platform (11); the rear end seat (2) is provided with a plug rod (203) that cooperates with the plug hole (103) at one end near the second strip groove (202). The two ends of the roller (5) are rotatably connected to the two opposite sides of the arc groove (204) by ball bearings; the roller (5) has two meshing tooth grooves (501) on the central circumferential side that cooperate with the meshing tooth belt (6).

2. The braking performance testing device based on agricultural machinery according to claim 1, characterized in that, The end bracket (3) has a limiting guide groove (302) on one end face that cooperates with the connecting bridge plate (4).

3. The braking performance testing device based on agricultural machinery according to claim 2, characterized in that, The bottom side of the rear seat (2) is provided with a limiting slot (205) that cooperates with the seat plate (8).

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