Performance testing device for furrow opener

Abstract

The utility model relates to the technical field of agricultural sowing, in particular to a ditcher performance testing device which comprises a frame assembly, the frame assembly is horizontally arranged, and a wheel rack assembly is arranged behind the frame assembly. A furrow opener performance testing device is arranged on the frame assembly, the furrow opener performance testing device comprises a mounting plate, a lifting adjusting assembly, a push-pull force testing meter and a furrow opener, the mounting plate is vertically arranged on the frame assembly, the lifting adjusting assembly is vertically arranged on the mounting plate, the push-pull force testing meter is arranged below the lifting adjusting assembly, and the furrow opener is arranged below the push-pull force testing meter. A furrow opener is arranged on the push-pull force tester; a row spacing adjusting device is arranged in front of the frame assembly and comprises a swing frame and a tooth-shaped stop dog, the swing frame is horizontally arranged on the frame assembly in a swing mode, and the tooth-shaped stop dog is arranged on the swing frame. A connecting base is arranged in front of the swing frame and connected with the traction vehicle head. An angle adjusting buffer device is further arranged between the frame assembly and the wheel rack assembly.

Description

Technical Field

[0001] This utility model relates to the field of agricultural sowing technology, and in particular to a furrow opener performance testing device. Background Technology

[0002] When a seeder is used for sowing, the land needs to be furrowed before planting. The shape of the furrow opener, the furrow depth, and the soil type all affect the seeder's sowing efficiency. To select the appropriate furrow opener for different soil types, performance tests are conducted on the furrow opener. Furthermore, based on the test data, the structural features of the furrow opener can be improved to further enhance the seeder's sowing efficiency.

[0003] Trenching resistance data is an important parameter for verifying the trenching performance of trenchers. By analyzing the trenching resistance data, we can determine the performance of different trenchers, such as trench depth, trench cross-section, and soil blockage inside the trencher. The trenching resistance data reflects the structural characteristics of the trencher, allowing for improvements.

[0004] Currently, most methods for testing the resistance of furrow openers on seeders involve connecting tension and compression sensors between the suspension rods at the three suspension points of the seeder. However, the force values ​​measured in this way may include the weight of the implement, the friction of the ground wheels, and other forces other than the resistance of the furrow opener. Therefore, they cannot directly and completely reflect the true furrow opening resistance. Summary of the Invention

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a trencher performance testing device that can directly measure the trenching performance of different types of trenchers in different soils.

[0006] The technical solution adopted by this utility model is:

[0007] A trencher performance testing device includes a frame assembly, which is horizontally positioned. A wheel frame assembly is positioned behind the frame assembly. The trencher performance testing device is mounted on the frame assembly. The trencher performance testing device includes a mounting plate, a lifting adjustment assembly, a push-pull force gauge, and a trencher. The mounting plate is vertically positioned on the frame assembly, and the lifting adjustment assembly is vertically positioned on the mounting plate. The push-pull force gauge is positioned below the lifting adjustment assembly, and the trencher is positioned on the push-pull force gauge. A row spacing adjustment device is positioned in front of the frame assembly. The row spacing adjustment device includes a swing frame and a toothed stop. The swing frame is horizontally oscillating on the frame assembly, and the toothed stop is positioned on the swing frame. A connecting seat is provided in front of the swing frame, and the connecting seat is connected to the tractor head. An angle adjustment buffer device is also provided between the frame assembly and the wheel frame assembly.

[0008] The lifting and adjusting assembly includes a mounting sleeve, a U-shaped groove plate, a rack, a gear, and a motor. The U-shaped groove plate is a long strip plate with a U-shaped groove. The U-shaped groove plate is vertically mounted on the mounting plate. A rack is installed in the U-shaped groove of the U-shaped groove plate, and a gear is installed in mesh with the rack. The gear is located at the output shaft end of the motor. The motor is fixedly mounted on the frame assembly. A mounting sleeve is installed at the lower end of the rack, and a push-pull force tester is fixedly installed on the side wall of the mounting sleeve.

[0009] The rack has stop components on both sides, including electric cylinders. The electric cylinders are fixedly mounted on the mounting plate, with the output shaft end of the electric cylinder facing the rack. A stop pin is provided at the output shaft end of the electric cylinder. A guide block is provided in front of the electric cylinder, and a through guide hole is provided on the guide block. The stop pin is slidably disposed in the guide hole of the guide block. Through circular holes are provided on both sides of the U-shaped groove plate. The circular holes are matched with the stop pin. When the electric cylinder pushes out the stop pin, the end of the stop pin passes through the circular hole and abuts against the side wall of the rack.

[0010] The angle adjustment buffer device includes a first support, which is fixedly mounted on the wheel frame assembly. A gantry frame is rotatably mounted on the top of the first support. A second support is mounted on the frame assembly, and the second support is positioned to match the first support. The second support is a groove-shaped support, with a second rotating shaft passing through its two walls. A stud guide rod is screwed through the middle of the second rotating shaft. A screw end cap is mounted on the top of the stud guide rod. The screw portion of the stud guide rod passes downward through the top of the gantry frame. A first retaining ring and a second retaining ring are mounted on the stud guide rod. The first retaining ring is located above the gantry frame, and the second retaining ring is located on the bottom end face of the stud guide rod. A first spring and a second spring are sleeved on the stud guide rod. The first spring is located below the second retaining ring and the top end face of the gantry frame, and the second spring is located above the first retaining ring and the top end face of the gantry frame.

[0011] The swing frame includes a third crossbeam, which is horizontally arranged side by side in front of the frame assembly. A main swing rod and a secondary swing rod are arranged in parallel between the third crossbeam and the frame assembly. The two ends of the main swing rod and the secondary swing rod are oscillating parallel to the third crossbeam and the frame assembly. A stop screw is also provided on the outer wall of the third crossbeam. The stop screw is screwed to the ends of the main swing rod and the secondary swing rod to fix their swing position.

[0012] The toothed stop includes a toothed disc, an adjusting toothed handle, and a fourth support. The toothed disc is located at the end of the main rocker arm. The toothed disc has a fan-shaped structure and a toothed structure on its outer edge. An adjusting toothed handle is provided that meshes with the teeth on the outer edge of the toothed disc. The adjusting toothed handle is set on the fourth support in a seesaw manner. The fourth support is fixedly set on the main rocker arm. A blocking cross plate is provided on the top of the fourth support.

[0013] The rack has knurling on its two outer side walls and the stop pin also has knurling on its ejector end face. When the stop pin abuts against the rack side wall, the knurling on the rack's outer side wall and the knurling on the stop pin's ejector end face increases the friction between them.

[0014] The beneficial effects of this utility model are:

[0015] 1. The device for testing the performance of the furrow opener adjusts the depth of the furrow opener into the soil through the lifting and adjusting components of the furrow opener performance testing device, so as to adapt to the furrowing requirements of different soils and planting furrows, making the whole device simple and efficient.

[0016] 2. This device for testing the resistance of a trencher can directly detect the resistance of the trencher through a push-pull force tester when the trencher enters the soil, so as to realize the detection of different soil resistances for experimental statistics and processing.

[0017] 3. This device for testing the resistance of the trencher can enable the traction device to move on a fixed track and change the trencher to perform trenching operations on different tracks through the row spacing adjustment device. Attached Figure Description

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in conjunction with the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation on this utility model. For those skilled in the art, other drawings can be obtained based on the following drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure;

[0020] Figure 2 This is a schematic diagram of the angle adjustment buffer device.

[0021] Figure 3 This is a schematic diagram of the trencher performance testing device.

[0022] Figure 4 Schematic diagram of the stop component structure;

[0023] Figure 5 This is a schematic diagram of the line spacing adjustment device.

[0024] Figure 6 This is a schematic diagram of the row spacing adjustment for the furrow opener.

[0025] In the diagram: 1-Wheel frame assembly, 101-First long beam, 102-First cross axle, 103-Second cross axle, 104-Wheel, 105-Support cross beam, 106-Bearing with seat, 2-Frame assembly, 201-Second long beam, 202-First cross beam, 203-Second cross beam, 204-Reinforcing beam plate, 3-Angle adjustment buffer device, 301-First support, 303-Gantry frame, 304-First spring, 305-Stud guide rod, 306-Second support, 307-Second pivot, 308-Second spring, 309-First retaining ring, 3 10-Second retaining ring; 4-Ditcher performance testing device; 401-Mounting plate; 402-Push-pull force tester; 403-Mounting sleeve; 404-U-shaped groove plate; 4041-Circular through hole; 405-Ditcher; 406-Rack; 407-Gear; 408-Motor; 409-Stop assembly; 4091-Electric cylinder; 4092-Guide block; 4093-Stop pin; 5-Row spacing adjustment device; 501-Third crossbeam; 502-Main swing rod; 503-Third rotating shaft; 504-Secondary swing rod; 505-Gear plate; 506-Stop gear handle. 508-Fourth support, 5081-Blocking cross plate, 509-Stop screw, 511-Fifth rotating shaft, 512-Sixth rotating shaft, 513-Seventh rotating shaft, 6-Connecting seat, 7-Ditcher first position, 8-Ditcher second position, 9-Control box. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] like Figure 1 , Figure 2As shown, a ditch opener performance testing device includes a frame assembly 2, a wheel frame assembly 1, a ditch opener performance testing device 4, a row spacing adjustment device 5, and a connecting seat 6. The frame assembly 2 is horizontally arranged, and the ditch opener performance testing device 4 is mounted on the frame assembly 2. The row spacing adjustment device 5 is located at the front end of the frame assembly 2, and the wheel frame assembly 1 is located at the rear end of the frame assembly 2. The wheel frame assembly 1 is rotatably mounted at the rear end of the frame assembly 2. An angle adjustment buffer device 3 is also provided between the wheel frame assembly 1 and the frame assembly 2. This device is used to adjust the rotation angle between the wheel frame assembly 1 and the frame assembly 2, and also to elastically buffer the impact force generated by walking on uneven ground. The row spacing adjustment device 5 is connected to the connecting seat 6 at its front end. The connecting seat 6 is connected to the tractor head to drive the device to run in the farmland for ditch opener performance testing. The frame assembly 2 is also equipped with a control box 9, which contains electrical components and a wireless control module for device operation and remote monitoring.

[0029] like Figure 1 As shown, the frame assembly 2 includes a second long beam 201, a first crossbeam 202, a second crossbeam 203, and a reinforcing beam plate 204. Two sets of second long beams 201 are arranged symmetrically in parallel. One end of each set of second long beams 201 is fixedly fitted with a first crossbeam 202, and the other end is fixedly fitted with a second crossbeam 203. The reinforcing beam plate 204 is fixedly mounted on the two sets of second long beams 201, and a trencher performance testing device 4 is mounted on the reinforcing beam plate 204. A wheel frame assembly 1 is rotatably mounted below the two sets of second long beams 201.

[0030] like Figure 1 As shown, the wheel frame assembly 1 includes a first long beam 101, a first horizontal axle 102, a second horizontal axle 103, wheels 104, a support beam 105, and seated bearings 106. Two sets of first long beams 101 are arranged in parallel and symmetrically. One end of each set of first long beams 101 has a first horizontal axle 102, and the other end has a second horizontal axle 103. A set of wheels 104 is mounted at each end of the second horizontal axle 103, and the wheels 104 roll in contact with the ground. A set of seated bearings 106 is mounted at each end of the first horizontal axle 102, and the two sets of seated bearings 106 are fixedly mounted below the second long beams 101. A support beam 105 is also provided between the two sets of first long beams 101, and both ends of the support beam 105 are fixedly mounted on the first long beams 101.

[0031] like Figure 1 As shown, an angle adjustment buffer device 3 is also provided between the wheel frame assembly 1 and the frame assembly 2, such as... Figure 2As shown, the angle adjustment buffer device 3 includes a first support 301, a gantry frame 303, a first spring 304, a stud guide rod 305, a second support 306, a second rotating shaft 307, a second spring 308, a first retaining ring 309, and a second retaining ring 310. The first support 301 is fixedly mounted on the supporting crossbeam 105, and the gantry frame 303 is rotatably mounted on the top of the first support 301. The second support 306 is fixedly mounted on the second crossbeam 203, and the second support 306 is positioned to match the first support 301. The second support 306 is a groove-shaped support, and a second rotating shaft 307 passes through the two walls. A stud guide rod 305 is screwed through the middle of the second rotating shaft 307. A screw end cap is provided on the top of the stud guide rod 305, and the screw portion of the stud guide rod 305 faces downwards. A first retaining ring 309 and a second retaining ring 310 are installed on the top of the portal frame 303 and the stud guide rod 305. The first retaining ring 309 is located above the portal frame 303 and the second retaining ring 310 is located on the bottom end face of the stud guide rod 305. A first spring 304 and a second spring 308 are sleeved on the stud guide rod 305. The first spring 304 is located below the second retaining ring 310 and the top end face of the portal frame 303, and the second spring 308 is located above the first retaining ring 309 and the top end face of the portal frame 303. After adjusting the angle between the wheel frame assembly 1 and the vehicle frame assembly 2 by turning the stud guide rod 305, the angle adjustment buffer device 3 can buffer the vertical impact force when the wheel frame assembly 1 travels on the uneven ground of the farmland, ensuring the stability of operation.

[0032] like Figure 3 As shown, the trencher performance testing device 4 includes a mounting plate 401, a push-pull force tester 402, a trencher 405, and a lifting adjustment assembly. The mounting plate 401 is vertically fixed on the reinforcing beam plate 204. The lifting adjustment assembly is installed on the mounting plate 401. The lifting adjustment assembly is a gear and rack structure assembly, which includes a mounting sleeve 403, a U-shaped groove plate 404, a rack 406, a gear 407, and a motor 408. The U-shaped groove plate 404 is a long strip plate with a U-shaped groove. The U-shaped groove plate 404 is vertically installed on the mounting plate 401 and extends through... A rack 406 is installed in the U-shaped groove of a reinforcing beam plate 204 and a gear 407 meshes with it. The gear 407 is located at the output shaft end of a motor 408, which is fixedly mounted on the reinforcing beam plate 204. A mounting sleeve 403 is located at the lower end of the rack 406. A push-pull force tester 402 is fixedly mounted on the side wall of the mounting sleeve 403. The push-pull force tester 402 has two mounting end faces: one is fixedly connected to the side wall of the mounting sleeve 403, and the other is fastened to a furrow opener 405. The furrow opener 405 is used for furrowing operations in farmland.

[0033] In this embodiment, the push-pull force tester 402 is a standard push-pull force test element, and its structural principle will not be described in detail here.

[0034] In this embodiment, the trencher 405 can have various structures, which can be improved and innovated according to its function. The focus of this embodiment is on the testing device of the trencher, not on the structure of the trencher itself, so the structure of the trencher will not be described in detail here. The structural diagram of the trencher in the figure is only for reference and to facilitate understanding of the application of this device.

[0035] During testing, motor 408 drives gear 407 to rotate, gear 407 drives rack 406 to move up and down, and mounting sleeve 403 set at the end of rack 406 moves up and down. Push-pull force tester 402 and furrow opener 405, which are matched and installed with mounting sleeve 403, move up and down, and the soil penetration depth of furrow opener 405 can be adjusted, so as to obtain different experimental parameter values. The resistance value encountered by furrow opener 405 in the soil will be detected by push-pull force tester 402.

[0036] To improve the stability of the rack 406 during operation, a stop component 409 is also provided to match the lifting adjustment component, such as... Figure 4 As shown, the stop assembly 409 is disposed on both sides of the rack 406 and fixedly mounted on the mounting plate 401; the stop assembly 409 includes an electric cylinder 4091, a guide block 4092, and a stop pin 4093. The electric cylinder 4091 is fixedly mounted on the mounting plate 401, with its output shaft end facing the rack 406. A stop pin 4093 is disposed on the output shaft end of the electric cylinder 4091, and a guide block 4092 is disposed in front of the electric cylinder 4091. A through guide hole is provided on 092, and the stop pin 4093 is slidably disposed in the guide hole of the guide block 4092; a through circular through hole 4041 is provided on both sides of the U-shaped groove plate 404, and the circular through hole 4041 is matched with the stop pin 4093. When the electric cylinder 4091 pushes out the stop pin 4093, the end of the stop pin 4093 passes through the circular through hole 4041 and abuts against the side wall of the rack 406, ensuring that the rack 406 does not shift vertically.

[0037] like Figure 4 As shown, knurling is provided on the two outer side walls of the rack 406, and knurling is also provided on the ejector end face of the stop pin 4093. When the stop pin 4093 abuts against the side wall of the rack 406, the knurling on the outer side wall of the rack 406 abuts against the knurling on the ejector end face of the stop pin 4093, increasing the friction between the two and improving the stopping effect.

[0038] In agricultural machinery operation, there is a fixed-path tillage method where the tractor unit travels only on a fixed path and does not wander arbitrarily, thereby reducing the occurrence of farmland compaction. In this embodiment, a row spacing adjustment device 5 is installed at the front end of the frame assembly 2.

[0039] like Figure 5 As shown, the row spacing adjustment device 5 includes a swing frame and a toothed stop. The swing frame is swayed on the first crossbeam 202, and the toothed stop is mounted on the swing frame to fix the swing frame. The swing frame includes a third crossbeam 501, a main swing rod 502, a third rotating shaft 503, a secondary swing rod 504, a fifth rotating shaft 511, a sixth rotating shaft 512, and a seventh rotating shaft 513. The third crossbeam 501 is arranged parallel to the first crossbeam 202 mounted on the frame assembly 2. The main swing rod 502 and the secondary swing rod 504 are arranged parallel between the third crossbeam 501 and the first crossbeam 202. One end of the main swing rod 502 is provided with the third rotating shaft 503, and the other end is provided with the sixth rotating shaft 512. The third rotating shaft 503 is rotatably mounted on the first crossbeam 202, and the sixth rotating shaft 512 is rotatably mounted on the third crossbeam 501. The auxiliary swing arm 504 has a fifth rotating shaft 511 at one end and a seventh rotating shaft 513 at the other end. The fifth rotating shaft 511 is rotatably mounted on the first crossbeam 202, and the seventh rotating shaft 513 is rotatably mounted on the third crossbeam 501. The first crossbeam 202 and the third crossbeam 501 can swing relatively parallel to each other under the action of the main swing arm 502 and the auxiliary swing arm 504. The toothed stop includes a toothed disc 505, an adjusting toothed handle 506, and a fourth support 508. The toothed disc 505 is located at the top of the sixth rotating shaft 512. The toothed disc 505 has a fan-shaped structure and teeth on its outer edge. The structure includes an adjusting handle 506 that meshes with the outer teeth of the gear disc 505. The adjusting handle 506 is mounted on a fourth support 508 in a seesaw manner. The fourth support 508 is fixedly mounted on the main swing rod 502. A blocking plate 5081 is provided at the top of the fourth support 508 to prevent the adjusting handle 506 from tilting upward. When the meshing teeth of the adjusting handle 506 are pressed down, the adjusting handle 506 disengages from the gear disc 505, and the swing frame can swing to adjust the row spacing. After the meshing teeth of the adjusting handle 506 are raised and mesh with the gear disc 505, the swing frame stops swinging.

[0040] To further ensure the stability of the adjustment angle of the swing frame, a stop screw 509 is also provided on the outer wall of the third crossbeam 501. The stop screw 509 is located at the sixth rotating shaft 512 and the seventh rotating shaft 513. When the stop screw 509 is screwed into contact with the sixth rotating shaft 512 and the seventh rotating shaft 513, the sixth rotating shaft 512 and the seventh rotating shaft 513 cannot rotate, preventing the main swing arm 502 and the auxiliary swing arm 504 from swinging and fixing their positions. When the stop screw 509 is screwed away from the sixth rotating shaft 512 and the seventh rotating shaft 513, the sixth rotating shaft 512 and the seventh rotating shaft 513 can rotate, and the main swing arm 502 and the auxiliary swing arm 504 can swing to adjust their positions.

[0041] like Figure 1 , Figure 6 As shown, when the position of the trencher 405 is as follows Figure 6When the trencher is at position 7 (first position), the main swing rod 502, the auxiliary swing rod 504 are perpendicular to the first crossbeam 202 and the third crossbeam 501. The adjusting handle 506 meshes with the gear plate 505, and the swing frame stops swinging. The stop screw 509 is screwed into the sixth rotating shaft 512 and the seventh rotating shaft 513 to further restrict the swing of the swing frame. The connecting seat 6 is connected to the tractor head. The motor 408 drives the gear 407 to rotate, and the gear 407 drives the rack 406 to move. The installation sleeve 403 at the end of 406 is displaced, and the push-pull force tester 402 and the trencher 405, which are matched and installed with the installation sleeve 403, are displaced. The soil penetration depth of the trencher 405 is adjusted. The angle between the wheel frame assembly 1 and the frame assembly 2 is adjusted by turning the stud guide rod 305. The tractor head starts to move. The trencher 405 performs trenching operation at the first position 7 of the trencher. The resistance value encountered by the trencher 405 in the soil will be detected by the push-pull force tester 402. After the trencher 405 completes trenching at its first position 7, the swing frame is adjusted: the adjusting handle 506 is pressed down to disengage from the toothed disc 505, the stop screw 509 disengages from the sixth and seventh rotating shafts 512 and 513, and the main swing rod 502 and auxiliary swing rod 504 swing at a certain angle. The trencher 405 is then adjusted to its second position 8. The adjusting handle 506 is then raised to engage with the toothed disc 505, and the stop screw 509 is tightened to abut against the sixth and seventh rotating shafts 512 and 513, stopping them. Trenching can then proceed at the second position 8. Following these steps, trenching tests with different row spacings can be conducted while maintaining the same traction position.

[0042] If the detected values ​​change abruptly due to factors such as uneven ground or ground tilt during the test, the depth of the trencher 405 entering the soil layer can be adjusted by adjusting the lifting adjustment component to ensure the relative stability of the depth of the trencher 405 entering the soil layer, thereby ensuring the accuracy of the test values.

Claims

1. A trencher performance testing device, comprising a frame assembly (2), the frame assembly (2) being horizontally arranged, and a wheel frame assembly (1) being arranged behind the frame assembly (2), characterized in that: The frame assembly (2) is provided with a trencher performance testing device (4). The trencher performance testing device (4) includes a mounting plate (401), a lifting adjustment component, a push-pull force tester (402), and a trencher (405). The mounting plate (401) is vertically mounted on the frame assembly (2). The mounting plate (401) is vertically mounted with a lifting adjustment component. A push-pull force tester (402) is mounted below the lifting adjustment component. A trencher (405) is mounted on the push-pull force tester (402). A line spacing adjustment device (5) is provided in front of the frame assembly (2). The line spacing adjustment device (5) includes a swing frame and a toothed stop. The swing frame is horizontally swayed on the frame assembly (2), and the toothed stop is provided on the swing frame. The swing frame is provided with a connecting seat (6) in front, and the connecting seat (6) is connected to the tractor head; An angle adjustment buffer device (3) is also provided between the frame assembly (2) and the wheel frame assembly (1).

2. The trencher performance testing device according to claim 1, characterized in that: The lifting adjustment assembly includes a mounting sleeve (403), a U-shaped groove plate (404), a rack (406), a gear (407), and a motor (408). The U-shaped groove plate (404) is a long strip plate with a U-shaped groove. The U-shaped groove plate (404) is vertically mounted on the mounting plate (401). A rack (406) is provided in the U-shaped groove of the U-shaped groove plate (404), and a gear (407) is provided in mesh with the rack (406). The gear (407) is located at the output shaft end of the motor (408). The motor (408) is fixedly mounted on the frame assembly (2). The mounting sleeve (403) is provided at the lower end of the rack (406), and a push-pull force tester (402) is fixedly mounted on the side wall of the mounting sleeve (403).

3. The trencher performance testing device according to claim 2, characterized in that: The rack (406) is provided with stop components (409) on both sides. The stop components (409) include electric cylinders (4091). The electric cylinders (4091) are fixedly mounted on the mounting plate (401). The output shaft end of the electric cylinders (4091) faces the rack (406). The output shaft end of the electric cylinders (4091) is provided with a stop pin (4093). A guide block (4092) is provided in front of the electric cylinders (4091). 2) A through guide hole is provided on the upper part, and the stop pin (4093) is slidably disposed in the guide hole of the guide block (4092); a through circular through hole (4041) is provided on both sides of the U-shaped groove plate (404), and the circular through hole (4041) is matched with the stop pin (4093). When the electric cylinder (4091) pushes out the stop pin (4093), the end of the stop pin (4093) passes through the circular through hole (4041) and abuts against the side wall of the rack (406).

4. The trencher performance testing device according to claim 1, characterized in that: The angle adjustment buffer device (3) includes a first support (301), which is fixedly mounted on the wheel frame assembly (1). A gantry frame (303) is rotatably mounted on the top of the first support (301). A second support (306) is mounted on the frame assembly (2). The second support (306) is positioned to match the first support (301). The second support (306) is a groove-type support. A second rotating shaft (307) passes through the two walls. A stud guide rod (305) is screwed through the middle of the second rotating shaft (307). A screw end cap is mounted on the top of the stud guide rod (305). The screw portion of stud guide rod (305) extends downward through the top of the portal frame (303). A first retaining ring (309) and a second retaining ring (310) are provided on the stud guide rod (305). The first retaining ring (309) is located above the portal frame (303), and the second retaining ring (310) is located on the bottom end face of the stud guide rod (305). A first spring (304) and a second spring (308) are sleeved on the stud guide rod (305). The first spring (304) is located below the second retaining ring (310) and the top end face of the portal frame (303), and the second spring (308) is located above the first retaining ring (309) and the top end face of the portal frame (303).

5. The trencher performance testing device according to claim 1, characterized in that: The swing frame includes a third crossbeam (501), which is horizontally arranged side by side in front of the frame assembly (2). A main swing rod (502) and a secondary swing rod (504) are arranged in parallel between the third crossbeam (501) and the frame assembly (2). The two ends of the main swing rod (502) and the secondary swing rod (504) are arranged in parallel with the third crossbeam (501) and the frame assembly (2). A stop screw (509) is also provided on the outer wall of the third crossbeam (501). The stop screw (509) is screwed at the ends of the main swing rod (502) and the secondary swing rod (504) to fix their swing position.

6. The trencher performance testing device according to claim 5, characterized in that: The toothed stop includes a toothed disc (505), an adjusting toothed handle (506), and a fourth support (508). The toothed disc (505) is located at the end of the main rocker arm (502). The toothed disc (505) has a fan-shaped structure and a toothed structure on its outer edge. An adjusting toothed handle (506) is provided to mesh with the outer edge teeth of the toothed disc (505). The adjusting toothed handle (506) is set on the fourth support (508) in a seesaw manner. The fourth support (508) is fixedly set on the main rocker arm (502). A blocking cross plate (5081) is provided on the top of the fourth support (508).

7. The trencher performance testing device according to claim 3, characterized in that: The rack (406) has knurling on its two outer side walls, and the stop pin (4093) has knurling on its protruding end face.

Images