A corn delivery device for a corn harvester

Abstract

The present application relates to the technical field of agricultural equipment, and discloses a corn conveying device for a corn harvester, which comprises a harvester body, a conveying assembly arranged outside the harvester body, a header arranged on the side of the conveying assembly away from the harvester body, and a peeling mechanism arranged in the middle of the conveying assembly; the peeling mechanism comprises a motor arranged on the outer wall of the conveying assembly, a rotating shaft fixedly connected with the output shaft of the motor and arranged on the inner wall of the conveying assembly, a plurality of peeling rollers arranged in linear array on the outer side of the rotating shaft, a horizontal shaft arranged on the inner wall of the rotating shaft, a worm wheel arranged on the end of the horizontal shaft away from the motor, a worm arranged on the end of the rotating shaft away from the motor, the worm wheel and the worm being meshingly connected, a plurality of sliding holes arranged in linear array in the interior of the rotating shaft, and a connecting ring arranged on the inner wall of the sliding hole. Through the arrangement of the peeling mechanism, the working gap can be adjusted according to the actual size of the corn, and the adaptability of the device to different working environments is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, and in particular to a corn conveying device for a corn harvester. Background Technology

[0002] The corn conveying device is a crucial core component of a corn harvester, primarily responsible for efficiently and with minimal damage transporting the ears harvested by the ear-picking machine to the grain collection bin or hulling device. Firstly, it enables continuous ear transfer. The conveying device promptly removes scattered and irregularly shaped corn ears from the picking platform, preventing ear accumulation and blockage, ensuring smooth and continuous harvesting operation, and significantly improving overall machine efficiency. Secondly, it prevents blockages and separates impurities. During conveying, through specific structural designs (such as scrapers or spiral blades), the conveying device shakes off and separates some broken stems, leaves, branches, and soil, effectively reducing the impurity content in the ears and improving harvest cleanliness. Most importantly, it effectively reduces kernel breakage. By controlling the conveying speed and posture, the conveying device ensures smooth ear transport, avoiding violent collisions or falls between ears, thereby maximizing the protection of the corn kernel integrity. In summary, the corn conveying device is the link between the harvesting and grain collection stages, and its performance directly determines the operating quality and efficiency of the corn harvester.

[0003] Traditional transport devices are widely used in agriculture, but due to limitations in their structure and working principle, they often have some unavoidable problems. Existing corn harvester conveyor systems have significant structural shortcomings in practical applications, severely restricting operational quality and efficiency. First, existing devices cannot adjust the spacing of the peeling rollers. Because corn ears of different varieties and from different plots vary significantly in thickness and length, fixed-spacing peeling rollers cannot adapt to these variations. When dealing with larger ears, too small a spacing can easily cause the ears to jam, clog, or even crush them, resulting in severe kernel breakage; while with smaller ears, too large a spacing leads to incomplete peeling, leaving a large amount of husks and reducing harvest quality. Second, the devices lack an automatic cleaning function for mechanically entangled husks. During peeling operations, husks easily become entangled on the rollers during high-speed rotation. Existing designs typically lack an effective automatic cleaning mechanism. As the operation progresses, the entangled husks accumulate, increasing the equipment load, accelerating component wear, and even causing conveying interruptions or mechanical failures. This forces operators to frequently stop the machine for manual cleaning, significantly reducing harvesting efficiency. Due to their inability to adapt to differences in ear size and lack of self-cleaning capabilities, existing conveying devices are unable to meet the stringent requirements of modern agriculture for efficient and low-loss harvesting. Summary of the Invention

[0004] In view of the existing technical problems, such as the inability to adjust the spacing of the peeling rollers in the conveying device and the lack of automatic cleaning of mechanically entangled materials, a corn conveying device for corn harvesters is proposed.

[0005] Its purpose is to enable the conveyor to adjust the spacing of the peeling rollers and to clean the tangled material on the shaft.

[0006] The technical solution of the present invention is a corn conveying device for a corn harvester, including a harvester body, a conveying assembly disposed on the outside of the harvester body, a cutting platform disposed on the side of the conveying assembly away from the harvester body, and a peeling mechanism disposed in the middle of the conveying assembly. The peeling mechanism includes a motor mounted on the outer wall of the conveying assembly, a rotating shaft mounted on the inner wall of the conveying assembly and fixedly connected to the output shaft of the motor, several peeling rollers arranged in a linear array on the outer side of the rotating shaft, a horizontal shaft mounted on the inner wall of the rotating shaft, a worm gear mounted on the end of the horizontal shaft away from the motor, a worm gear mounted on the end of the rotating shaft away from the motor and meshing with the worm gear, several sliding holes arranged in a linear array inside the rotating shaft, a connecting ring mounted on the inner wall of the sliding hole and fixedly connected to the corresponding peeling roller on both sides of the connecting ring, a spring mounted on the side of the connecting ring near the motor and fixedly connected at both ends to the connecting ring and the inner wall of the sliding hole, several drive blocks arranged in a linear array on the outer side of the horizontal shaft, push rods symmetrically arranged on the side of the connecting ring away from the motor, and a cutting unit mounted on the outer side of the rotating shaft.

[0007] Furthermore, the inner wall of the peeling roller is symmetrically provided with guide grooves, and guide strips are symmetrically provided near the corresponding peeling roller on the rotating shaft. The outer wall of the guide strips is slidably connected to the inner wall of the guide grooves, and the inner wall of the peeling roller is provided with a knife-relief groove.

[0008] Furthermore, the connecting ring has symmetrical protrusions on both sides, and the sliding hole has symmetrical sliding grooves on both sides, with the inner wall of the sliding groove slidably connected to the corresponding protrusion.

[0009] Furthermore, a driving ramp is provided on the side of the driving block near the connecting ring, and the end of the push rod near the driving block is adaptively slidably connected to the driving ramp.

[0010] Furthermore, the cutting unit includes several annular grooves linearly arrayed on the outside of the rotating shaft, with each annular groove located at the center of the two nearest peeling rollers, a toothed ring disposed on the inner wall of the annular groove, a support plate disposed on the outside of the toothed ring, the top of the support plate being fixedly connected to the inner wall of the conveying assembly, a movable groove disposed on the rotating shaft near the annular groove, a gear disposed in the middle of the movable groove, reciprocating lead screws symmetrically disposed on both sides of the gear, a slider disposed on the outside of the reciprocating lead screw, a blade disposed on the outside of the slider, and a guide block disposed on the inner wall of the slider.

[0011] Furthermore, the top of the guide block is provided with a positioning hole, and the inner wall of the slider is provided with a support shaft, the outer wall of the support shaft being rotatably connected to the positioning hole.

[0012] Furthermore, a short arm is provided on the outer side of the slider, the outer side of the short arm is slidably connected to the movable groove, and the end of the short arm away from the slider is fixedly connected to the blade.

[0013] Furthermore, a drive groove is provided on the outer side of the reciprocating lead screw, and the inner wall of the drive groove is slidably connected to the guide block.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By incorporating a peeling mechanism, the problem of peeling corn due to differences in ear size is solved. This mechanism has an adjustable function, allowing workers to adjust the working gap according to the actual size of the corn. When dealing with larger ears, the mechanism provides adequate space to prevent excessive compression and damage. When processing smaller ears, the mechanism can reduce the gap to ensure that the ear husk is fully peeled off. This design enables the equipment to adapt to the morphological differences of different corn varieties, ensuring the continuity and effectiveness of peeling operations and improving the equipment's adaptability to different working environments.

[0015] 2. By setting up a cutting unit, the problem of bracts entangled on the rotating shaft is solved. During the peeling process, the detached bracts easily adhere to and entangle on the rotating parts. The cutting unit can cut these entangled materials in time and separate them, preventing the bracts from accumulating and thickening on the rotating shaft. This process avoids mechanical jamming caused by the increase of entangled materials, ensures the smooth operation of each rotating part, reduces downtime for cleaning due to blockage, and thus maintains the smooth operation of the equipment during long-term operation.

[0016] 3. By setting gears and reciprocating lead screws, the power is rationally distributed and utilized. This design uses the existing rotary motion in the conveying assembly as a power source to drive the cutting parts through the transmission components. No additional power equipment needs to be installed. This structural design achieves the automatic cutting function of the bud leaves while maintaining the original energy consumption level of the equipment without increasing additional energy consumption. It not only simplifies the overall structure of the equipment but also reduces operating costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a schematic diagram of the internal structure of the delivery assembly of the present invention; Figure 3 This is a schematic diagram of the overall structure of the peeling mechanism of the present invention; Figure 4 This is a schematic diagram of the overall structure of the rotating shaft of the present invention; Figure 5 This is a schematic diagram showing the connection between the peeling roller and the rotating shaft of the present invention; Figure 6 This is a schematic diagram of the internal structure of the rotating shaft of the present invention; Figure 7 This is a schematic diagram showing the connection between the crossbar and the drive block of the present invention; Figure 8 This is a schematic diagram of the gear and gear ring meshing of the present invention; Figure 9 This is a schematic diagram of the connection between the guide block and the bidirectional lead screw of the present invention; Figure 10 This is a schematic diagram showing the connection between the slider and the guide block of the present invention; Figure 11 This is a schematic diagram of the sliding hole structure of the present invention; Figure 12 This is a schematic diagram of the connection between the worm gear and the worm shaft according to the present invention.

[0018] In the picture: 1. Harvester body; 2. Conveyor assembly; 3. Header; 4. Peeling mechanism; 41. Motor; 42. Shaft; 43. Peeling roller; 44. Horizontal shaft; 45. Worm gear; 46. Worm; 47. Sliding hole; 48. Connecting ring; 49. Spring; 410. Drive block; 411. Push rod; 412. Ring groove; 413. Gear ring; 414. Support plate; 415. Movable groove; 416. Gear; 417. Reciprocating lead screw; 418. Slider; 419. Blade; 420. Guide block. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1, referring to Figures 1-12This invention provides a corn conveying device for a corn harvester, comprising a harvester body 1, a conveying assembly 2 fixedly connected to the outside of the harvester body 1, a header 3 fixedly connected to the side of the conveying assembly 2 away from the harvester body 1, and a peeling mechanism 4 installed in the middle of the conveying assembly 2. The peeling mechanism 4 includes a motor 41 fixedly connected to the outer wall of the conveying assembly 2, a rotating shaft 42 rotatably connected to the inner wall of the conveying assembly 2, the rotating shaft 42 being fixedly connected to the output shaft of the motor 41, a plurality of peeling rollers 43 slidably connected in a linear array to the outside of the rotating shaft 42, and a horizontal shaft 44 rotatably connected to the inner wall of the rotating shaft 42, with a fixed connection at the end of the horizontal shaft 44 away from the motor 41. The shaft 42 has a worm gear 45, a worm 46 rotatably connected to the end of the shaft 42 away from the motor 41, the worm gear 45 and the worm 46 meshing together, a number of linear arrays of sliding holes 47 opened inside the shaft 42, a connecting ring 48 slidably connected to the inner wall of the sliding hole 47, the two sides of the connecting ring 48 being fixedly connected to the corresponding peeling roller 43, a spring 49 fixedly connected to the side of the connecting ring 48 near the motor 41, the two ends of the spring 49 being fixedly connected to the connecting ring 48 and the inner wall of the sliding hole 47 respectively, a number of linear arrays of drive blocks 410 fixedly connected to the outside of the horizontal shaft 44, a push rod 411 symmetrically fixedly connected to the side of the connecting ring 48 away from the motor 41, and a cutting unit assembled on the outside of the shaft 42.

[0021] Specifically, when the harvester is working, the header 3 picks the corn and transports it to the main body 1 of the harvester via the guide rod in the conveyor assembly 2. During the process of passing through the conveyor assembly 2, the corn passes through the peeling mechanism 4. The peeling mechanism 4 peels the corn by grouping the two closest peeling rollers 43 together. Specifically, the motor 41 is started, driving the rotating shaft 42 to rotate. Simultaneously, the rotating shaft 42 drives the peeling rollers 43 connected to it to rotate, using the rollers to squeeze and rub the corn husks, causing them to fall off. When harvesting smaller corn, to avoid insufficient clamping force of the peeling rollers 43, which could lead to ineffective husk removal and incomplete peeling, the worm gear 46 is rotated to rotate the worm wheel 45. Simultaneously, the worm wheel 45 rotates, driving the horizontal shaft 44 to rotate. The horizontal shaft 44 drives the drive block 410 to rotate. While the drive block 410 rotates, it presses the corresponding push rod 411 through the drive inclined plane, causing the push rod 411 to move towards the motor 41. As the push rod 411 moves, it drives the connecting ring 48 to move together. After the connecting ring 48 moves, it causes the spring 49 to store force. At the same time, the connecting ring 48 moves, causing the peeling roller 43 connected to it to move together. The two closest peeling rollers 43 move in opposite directions. By reducing the distance between the two closest peeling rollers 43, it can adapt to the smaller diameter of corn. The horizontal shaft 44 rotates in the opposite direction, and the connecting ring 48 will gradually return to its original position under the action of the spring 49, and the corresponding peeling roller 43 will return to its original position at the same time. By controlling the distance between the peeling rollers 43 in the same group, it can adapt to the harvesting and transportation needs of corn of different sizes and moisture contents.

[0022] Reference Figures 4-6 The inner wall of the peeling roller 43 is symmetrically provided with guide grooves, and the rotating shaft 42 is symmetrically provided with guide strips near the corresponding peeling roller 43. The outer wall of the guide strip is slidably connected to the inner wall of the guide groove, and the inner wall of the peeling roller 43 is provided with a knife-removing groove.

[0023] Specifically, the peeling roller 43 constrains its own movement trajectory through the cooperation of the guide groove and the guide bar. When the peeling roller 43 moves along the rotating shaft 42, the blade groove avoids contact with the blade 419.

[0024] Reference Figure 6 The connecting ring 48 has symmetrical protrusions on both sides, and the sliding hole 47 has symmetrical grooves on both sides, with the inner wall of the groove slidingly connected to the corresponding protrusion.

[0025] Specifically, the connecting ring 48 is fixedly connected to the corresponding peeling roller 43 through the protrusions on both sides. When the connecting ring 48 moves, it drives the peeling roller 43 to move synchronously. The groove makes the connecting ring 48 move only in a straight line.

[0026] Reference Figure 6 and Figure 7 The drive block 410 has a drive ramp on the side near the connecting ring 48, and the end of the push rod 411 near the drive block 410 is adaptively slidably connected to the drive ramp.

[0027] Specifically, when the drive block 410 rotates, it presses against the push rod 411 through the drive inclined surface. After the push rod 411 is pressed, it drives the connecting ring 48 to move synchronously.

[0028] Example 2, refer to Figures 1-12 This is the second embodiment of the present invention, which differs from the first embodiment in that: the cutting unit includes a plurality of annular grooves 412 linearly arrayed on the outside of the rotating shaft 42, the plurality of annular grooves 412 being respectively located at the center of the two closest peeling rollers 43, a toothed ring 413 rotatably connected to the inner wall of the annular groove 412, a support plate 414 fixedly connected to the outside of the toothed ring 413, the top of the support plate 414 being fixedly connected to the inner wall of the conveying assembly 2, a movable groove 415 opened on the rotating shaft 42 near the annular groove 412, a gear 416 rotatably connected to the middle of the movable groove 415, a reciprocating screw 417 symmetrically fixedly connected to both sides of the gear 416, a slider 418 slidably connected to the outside of the reciprocating screw 417, a blade 419 fixedly connected to the outside of the slider 418, and a guide block 420 rotatably connected to the inner wall of the slider 418.

[0029] Specifically, during the corn transportation and peeling process, the cutting unit can prevent the peeled corn husks from getting tangled on the rotating shaft 42, thus affecting the transportation and peeling efficiency of the corn. This is achieved by starting the motor 41 to rotate the rotating shaft 42. The gear ring 413, constrained by the support plate 414, lacks freedom of movement. Therefore, when the rotating shaft 42 rotates, a relative rotation occurs between the gear ring 413 and the rotating shaft 42. At this time, the gear 416 inside the rotating shaft 42 will rotate under the drive of the corresponding gear ring 413. The reciprocating screw 417 connected to it rotates. While the reciprocating screw 417 rotates, it drives the corresponding guide to move. The guide block 420 drives the slider 418 to move. Since the slider 418 is constrained by the movable groove 415, it can only move back and forth under the action of the reciprocating screw 417. While the slider 418 moves, it drives the blade 419 to move together. When the blade 419 moves back and forth, it cuts the bracts wrapped around the outside of the rotating shaft 42, so that the bracts fall off after being cut, thereby preventing the bracts from wrapping around the outside of the rotating shaft 42.

[0030] Reference Figure 9 and Figure 10 The top of the guide block 420 is provided with a positioning hole, and the inner wall of the slider 418 is provided with a support shaft, the outer wall of the support shaft being rotatably connected to the positioning hole.

[0031] Specifically, the guide block 420 transmits the force to the slider 418 through the positioning hole and the support shaft, and the position between the guide block 420 and the slider 418 remains relatively fixed.

[0032] Reference Figures 8-10 A short arm is provided on the outer side of the slider 418. The outer side of the short arm is slidably connected to the movable groove 415. The end of the short arm away from the slider 418 is fixedly connected to the blade 419.

[0033] Specifically, the slider 418 is connected to the blade 419 via a short arm, and the short arm and the movable groove 415 cooperate to prevent the slider 418 from having a degree of freedom of rotation.

[0034] Reference Figures 6-9 A drive groove is provided on the outer side of the reciprocating lead screw 417, and the inner wall of the drive groove is slidably connected to the guide block 420.

[0035] Specifically, when the reciprocating lead screw 417 rotates, it can drive the guide block 420 to move along the drive groove. The guide block 420 drives the slider 418 to move. The slider 418 is constrained by the movable groove 415 and can only move back and forth along the movable groove 415. The rest of the structure is the same as that of Embodiment 1.

[0036] Based on embodiments 1-2, the working principle of the present invention is as follows: During operation, the header 3 picks the corn and transports it to the harvester body 1 in a sorted manner through the guide rod in the conveying assembly 2. As the corn passes through the conveying assembly 2, it passes through the peeling mechanism 4. The peeling mechanism 4 peels the corn by grouping the two closest peeling rollers 43 together. Specifically, the motor 41 is started to drive the rotating shaft 42 to rotate, and the rotating shaft 42 drives the peeling rollers 43 connected to it to rotate. The rollers squeeze and rub the corn husks to tear them off.

[0037] When harvesting corn of different sizes, the worm gear 46 is rotated to rotate the worm wheel 45, which in turn drives the horizontal shaft 44 to rotate. The horizontal shaft 44 then drives the drive block 410 to rotate. The drive block 410 presses the corresponding push rod 411 through the drive inclined surface, causing the push rod 411 to move towards the motor 41. The push rod 411 drives the connecting ring 48 to slide in the sliding hole 47 and compress the spring 49. As the connecting ring 48 moves, it drives the peeling roller 43 to move axially along the rotating shaft 42. Since the two peeling rollers 43 closest to each other in the same group move in opposite directions, the distance between them is reduced to accommodate the clamping and peeling needs of smaller diameter corn. When the horizontal shaft 44 is rotated in the opposite direction, the spring 49 releases its elastic force to reset the connecting ring 48, which in turn drives the peeling roller 43 to reset, increasing the distance to accommodate larger diameter corn, thus meeting the harvesting and transportation needs of corn of different sizes and moisture contents.

[0038] During the peeling process, to prevent the peeled bracts from getting tangled on the rotating shaft 42 and affecting transportation and peeling efficiency, the cutting unit works synchronously. When the rotating shaft 42 rotates, the gear ring 413 is fixed and constrained by the support plate 414 and remains stationary, thus generating relative rotation with the rotating shaft 42. The gear ring 413 drives the gear 416 to rotate, and the gear 416 drives the reciprocating screw 417 to rotate. The reciprocating screw 417 drives the guide block 420 to move through the drive groove. The guide block 420 drives the slider 418 to move through the support shaft. The slider 418 drives the blade 419 to move synchronously through the short arm. During the movement, the blade 419 cuts off the bracts tangled on the outside of the rotating shaft 42, causing the bracts to fall off and ensuring the continuous and efficient operation of the device.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A corn conveying device for a corn harvester, comprising a harvester body (1), a conveying assembly (2) disposed outside the harvester body (1), and a header (3) disposed on the side of the conveying assembly (2) away from the harvester body (1), characterized in that: It also includes a peeling mechanism (4) located in the middle of the conveyor assembly (2); The peeling mechanism (4) includes a motor (41) disposed on the outer wall of the conveying assembly (2), a rotating shaft (42) disposed on the inner wall of the conveying assembly (2), the rotating shaft (42) being fixedly connected to the output shaft of the motor (41), a plurality of peeling rollers (43) arranged in a linear array on the outer side of the rotating shaft (42), a horizontal shaft (44) disposed on the inner wall of the rotating shaft (42), a worm gear (45) disposed on the end of the horizontal shaft (44) away from the motor (41), and a worm (46) disposed on the end of the rotating shaft (42) away from the motor (41), the worm gear (45) and the worm (46) being meshed and connected, and a plurality of linear arrays being opened on the outer side of the rotating shaft (42). The rotating shaft (42) has a sliding hole (47) inside, a connecting ring (48) is set on the inner wall of the sliding hole (47), the two sides of the connecting ring (48) are fixedly connected to the corresponding peeling roller (43), a spring (49) is set on the side of the connecting ring (48) near the motor (41), the two ends of the spring (49) are fixedly connected to the connecting ring (48) and the inner wall of the sliding hole (47) respectively, a number of linear arrays of drive blocks (410) are set on the outside of the horizontal shaft (44), a push rod (411) is symmetrically set on the side of the connecting ring (48) away from the motor (41), and a cutting unit is set on the outside of the rotating shaft (42).

2. The corn conveying device for a corn harvester according to claim 1, characterized in that: The inner wall of the peeling roller (43) is symmetrically provided with guide grooves, and the rotating shaft (42) is symmetrically provided with guide strips near the corresponding peeling roller (43). The outer wall of the guide strip is slidably connected to the inner wall of the guide groove, and the inner wall of the peeling roller (43) is provided with a knife-removing groove.

3. The corn conveying device for a corn harvester according to claim 1, characterized in that: The connecting ring (48) has symmetrical protrusions on both sides, and the sliding hole (47) has symmetrical grooves on both sides, with the inner wall of the groove slidingly connected to the corresponding protrusion.

4. The corn conveying device for a corn harvester according to claim 1, characterized in that: The drive block (410) has a drive ramp on the side near the connecting ring (48), and the top rod (411) is slidably connected to the drive ramp at the end near the drive block (410).

5. The corn conveying device for a corn harvester according to claim 1, characterized in that: The cutting unit includes several annular grooves (412) linearly arrayed on the outside of the rotating shaft (42), the several annular grooves (412) being located at the center of the two closest peeling rollers (43), a toothed ring (413) set on the inner wall of the annular groove (412), a support plate (414) set on the outside of the toothed ring (413), the top of the support plate (414) being fixedly connected to the inner wall of the conveying assembly (2), a movable groove (415) opened on the rotating shaft (42) near the annular groove (412), a gear (416) set in the middle of the movable groove (415), a reciprocating screw (417) symmetrically arranged on both sides of the gear (416), a slider (418) set on the outside of the reciprocating screw (417), a blade (419) set on the outside of the slider (418), and a guide block (420) set on the inner wall of the slider (418).

6. The corn conveying device for a corn harvester according to claim 5, characterized in that: The top of the guide block (420) is provided with a positioning hole, and the inner wall of the slider (418) is provided with a support shaft, the outer wall of the support shaft being rotatably connected to the positioning hole.

7. The corn conveying device for a corn harvester according to claim 5, characterized in that: A short arm is provided on the outer side of the slider (418). The outer side of the short arm is slidably connected to the movable groove (415). The end of the short arm away from the slider (418) is fixedly connected to the blade (419).

8. The corn conveying device for a corn harvester according to claim 5, characterized in that: The reciprocating lead screw (417) has a drive groove on its outer side, and the inner wall of the drive groove is slidably connected to the guide block (420).

Images