Telescopic chain scraper conveyor

Abstract

The utility model discloses a telescopic chain scraper conveyor, which belongs to the field of chain scraper conveyors, and comprises a telescopic chain scraper conveyor body, the telescopic chain scraper conveyor body is provided with a closed-loop chain plate and mounting seats, the mounting seats are fixed on two opposite side walls in the telescopic chain scraper conveyor body, and the mounting seats are fixed on the telescopic chain scraper conveyor body. A sliding groove and a first shaft are arranged in the installation base, limiting parts are arranged at the two ends of the first shaft, the limiting parts are inserted into the sliding groove and can slide up and down along the sliding groove, the tensioning roller is rotationally connected to the middle of the first shaft and hung on the chain plate, and the balance weight part is installed on the first shaft. According to the telescopic chain plate conveyor, the tensioning roller is hung on the closed-loop chain plate, the counter weight piece is combined, the tensioning roller is pulled down through the gravity of the counter weight piece, the stroke of the chain plate is increased, and therefore the automatic tensioning effect is achieved, and particularly during telescopic motion, self-adaption tensioning adjustment can be achieved, adjustment is not needed, and more convenience is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of chain plate conveyors, in particular to a telescopic chain plate conveyor. Background Art

[0002] Telescopic chain conveyor is a conveying device with telescopic function. It uses chain as the direct carrier of the conveyed goods, with good rigidity and strong carrying capacity.

[0003] Most existing telescopic chain conveyors require manual tension adjustment, such as the material conveying device disclosed in Application No. CN200320131891.1, which is particularly rigid and retractable for conveying boxes or bags of a specific shape. The device comprises a fixed frame 23, a telescopic mechanism, and a conveying device. A bracket 24 is provided below the fixed frame. A telescopic frame 20 is located within the fixed frame and has a trough 32 thereon. The telescopic frame is slidably connected to support wheels 33 on the fixed frame via the trough. A telescopic motor 2 is fixedly connected to the top of the fixed frame and connected to a chain connecting plate 34 mounted on the telescopic frame via sprockets 27 and 5 and a chain 22. The conveying device comprises a chain drive roller 1, chain rollers 21 and 17, an adjustment chain roller 6, a tensioning roller 25, and a chain plate 26, forming a closed annular structure. The chain plate tension is adjusted via the tensioning roller, which requires manual adjustment, making adjustment inconvenient. Utility Model Content

[0004] The purpose of the present utility model is to provide a telescopic chain conveyor to overcome at least one of the above-mentioned defects in the prior art.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a telescopic chain conveyor, including a telescopic chain conveyor body, the telescopic chain conveyor body having a closed-loop chain plate, a mounting seat, mounting seats fixed to opposite side walls of the telescopic chain conveyor body, a slide groove, a first axis, and limit parts at both ends of the first axis. The limit parts are inserted into the slide groove and can slide up and down along the slide groove. The tensioning roller is rotatably connected to the middle part of the first axis and is hung on the chain plate and the counterweight, which is installed on the first axis.

[0007] Preferably, both opposite side walls of the limiting portion are planes, and the planes are in contact with the inner side walls of the sliding groove.

[0008] Preferably, a first screw is further included, the lower portion of the mounting seat has a first threaded hole, the first screw passes through the first threaded hole, and extends into the sliding groove.

[0009] Preferably, the tensioning drum has bosses on both opposite sides.

[0010] Preferably, the counterweight includes a hook, a second screw, a first mounting plate, and a counterweight block. The hook is hung on the first axis, the hook has a second threaded hole, the second screw passes through the second threaded hole and extends to the bottom of the first axis, the first mounting plate is fixed to the hook, and the counterweight block is detachably connected to the first mounting plate.

[0011] Preferably, the telescopic chain conveyor body further comprises a fixed frame, a telescopic frame, a guide roller, a chain drive mechanism, a telescopic drive mechanism, a sprocket, and a chain; the telescopic frame is slidably connected to the fixed frame; the telescopic frame has at least two telescopic sections, and two adjacent telescopic sections are slidably fitted together; at least two guide rollers are provided in the fixed frame and in each telescopic section; the chain drive mechanism, the telescopic drive mechanism, and the mounting seat are all fixed in the fixed frame; the chain passes around each guide roller, the chain drive mechanism, and the tensioning roller and is enclosed; The right end of the fixed frame and the left and right ends of the remaining telescopic sections except the rightmost telescopic section are all provided with sprockets. The chain in the fixed frame bypasses the telescopic drive mechanism and the sprocket therein, and the chain in the telescopic section bypasses the two sprockets therein. The chain above the sprocket in the fixed frame is fixedly connected to the telescopic section of the leftmost section, the chain below the sprocket in the telescopic section of the leftmost section is fixedly connected to the fixed frame, the chain above the sprocket in the telescopic section is fixedly connected to the subsequent telescopic section, and the chain below the sprocket in the subsequent telescopic section is fixedly connected to the previous telescopic section.

[0012] Preferably, the front and rear side walls of the telescopic section are provided with telescopic guide mechanisms, and the fixed frame and the front and rear side walls of the remaining telescopic sections except the rightmost telescopic section are provided with guide strips that cooperate with the guide mechanisms.

[0013] Preferably, the telescopic guide mechanism includes a connecting frame, a second mounting plate, a heavy-duty bearing, and a guide wheel. The second mounting plates are fixed to the front and rear ends of the connecting frame. The upper and lower sides of the second mounting plate are rotatably connected to the heavy-duty bearings. The guide bar passes between the heavy-duty bearings on the upper and lower sides. The front and rear ends of the connecting frame are rotatably connected to the guide wheels, and the inner side of the guide bar is in contact with the guide wheel.

[0014] Preferably, it also includes rollers, and the fixed frame and the right ends of the remaining telescopic sections except the rightmost telescopic section are fixed with rollers. The telescopic sections and the rollers are in rolling cooperation. The rollers include a second shaft, a stop nut, a rolling bearing, and a bushing. The rolling bearing is fixed to the second shaft, and the bushing is fixed to the rolling bearing. The second shaft on both sides of the front and rear of the rolling bearing is threaded with stop nuts.

[0015] Preferably, it also includes a cargo guide frame, a light, a power-off button, an emergency stop button, a rubber strip, and an electrical control box. The cargo guide frames are fixed on the front and rear sides of the top of the fixed frame. The cargo guide frames are located on the front and rear sides of the chain plate. The right end of the rightmost telescopic section is provided with a light, a rubber strip, and a power-off button. The rightmost end of the rubber strip is located to the right of the rightmost end of the power-off button. The emergency stop button is provided on the side wall of the rightmost telescopic section. The electrical control box is provided on the side wall of the fixed frame. The power-off button and the emergency stop button are both electrically connected to the electrical control box. The electrical control box is electrically connected to the light, the chain plate drive mechanism and the telescopic drive mechanism.

[0016] The beneficial effects of the utility model are:

[0017] 1. By hanging the tensioning roller on the closed-loop chain plate and combining it with the setting of the counterweight, the gravity of the counterweight is used to pull down the tensioning roller and increase the chain plate stroke, thereby achieving the effect of automatic tensioning. Especially during the telescopic action, it can adaptively adjust the tension without the need for means of adjustment, which is more convenient.

[0018] 2. By setting the plane, the first axis can only slide up and down along the slide groove and cannot rotate.

[0019] 3. The first screw is provided to prevent the limiting portion from sliding downward and out of the sliding groove.

[0020] 4. Prevent the chain plate from running off track by setting the boss.

[0021] 5. Use the second screw to block the opening below the hook to prevent the first mounting plate and counterweight from falling out.

[0022] 6. The detachable counterweight block can be replaced with a counterweight block of different weights according to the actual use environment, which has strong adaptability.

[0023] 7. Through chain linkage, only one telescopic drive mechanism is needed to achieve synchronous telescopic extension of each telescopic section, reducing costs.

[0024] 8. Through the setting of telescopic guide mechanism and guide strip, it plays a guiding role in the telescopic process to prevent deviation.

[0025] 9. The heavy-duty bearings on the upper and lower sides are used to limit the vertical direction, and the guide wheels are used to limit the horizontal direction, thus ensuring smooth extension and retraction.

[0026] 10. The position of the rolling bearing and the sleeve can be adjusted forward and backward through the retaining nut to adapt to the support of telescopic sections of different widths.

[0027] 11. The cargo guide frame is set up to guide the cargo for transportation.

[0028] 12. The setting of the rubber strip acts as a buffer to prevent obstacles from directly hitting the power-off button. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the utility model (in an extended state).

[0030] Figure 2 It is a right side structural schematic diagram of the present utility model.

[0031] Figure 3 It is a schematic diagram of the coordinated structure of the chain plate, guide roller, chain plate driving mechanism and tensioning structure of the utility model.

[0032] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of A in the middle.

[0033] Figure 5 It is a three-dimensional structural schematic diagram of the tensioning roller, the first shaft, the limiting part, and the counterweight of the utility model.

[0034] Figure 6 It is a three-dimensional structural diagram of the mounting seat of the utility model.

[0035] Figure 7 The utility model is a schematic diagram of the main structure of the telescopic drive mechanism, fixed frame, telescopic section, sprocket and chain.

[0036] Figure 8 yes Figure 7 Schematic diagram of the enlarged structure of B.

[0037] Figure 9 It is a schematic diagram of the coordinated structure of the fixed frame, telescopic section, and chain of the utility model.

[0038] Figure 10 It is a schematic diagram of the main structure of the chain plate driving mechanism, guide rollers and chain plates of the utility model.

[0039] Figure 11 It is a three-dimensional structural diagram of the telescopic guide mechanism of the utility model.

[0040] Figure 12 It is a schematic cross-sectional structural diagram of the utility model roller.

[0041] Figure 13 It is a schematic diagram of the three-dimensional structure of the utility model (contracted state).

[0042] The markings in the attached figure are: 1-tensioning roller, 2-chute, 3-first shaft, 4-limiting part, 5-mounting seat, 6-counterweight, 7-telescopic chain conveyor body, 8-plane, 9-first screw, 10-first threaded hole, 11-boss, 61-hook, 62-second screw, 63-first mounting plate, 64-counterweight, 65-second threaded hole, 71-fixed frame, 72-telescopic section, 73-guide roller, 74-chain drive mechanism, 75-telescopic section Retraction drive mechanism, 76-sprocket, 77-chain, 78-chain plate, 79-telescopic guide mechanism, 710-guide bar, 791-connecting frame, 792-second mounting plate, 793-heavy-duty bearing, 794-guide wheel, 12-roller, 121-second shaft, 122-stop nut, 123-rolling bearing, 124-sleeve, 13-cargo guide frame, 14-light, 15-power off button, 16-emergency stop button, 17-rubber strip, 18-electrical control box. DETAILED DESCRIPTION

[0043] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0044] Any content not described in detail in this specification belongs to the prior art known to those skilled in the art. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] like Figures 1 to 13As shown, a telescopic chain plate 78 conveyor provided in this embodiment includes a telescopic chain plate conveyor body 7, the telescopic chain plate conveyor body 7 having a closed-loop chain plate 78, a mounting seat 5, the mounting seat 5 being fixed to the front and rear side walls of the telescopic chain plate conveyor body 7, a chute 2 being provided within the mounting seat 5, a first shaft 3, and a stopper 4 at each front and rear end of the first shaft 3. The stopper 4 is inserted into the chute 2 and can slide up and down along the chute 2. A tensioning roller 1 is rotatably connected to the middle portion of the first shaft 3 and hung on the chain plate 78. A counterweight 6 is mounted on the first shaft 3. By hanging the tensioning roller 1 on the closed-loop chain plate 78 and combining it with the arrangement of the counterweight 6, the weight of the counterweight 6 pulls the tensioning roller 1 downward, increasing the travel of the chain plate 78, thereby achieving automatic tensioning. In particular, during telescopic movement, the tensioning can be adaptively adjusted, eliminating the need for manual adjustment, which is more convenient. The cooperation between the stopper 4 and the chute 2 ensures that the first shaft 3 can only slide up and down along the chute 2.

[0046] The left and right side walls of the limiting portion 4 are both planes 8, which contact the inner side walls of the chute 2. By setting the planes 8, the first shaft 3 can only slide up and down along the chute 2 without rotating.

[0047] The first screw 9 is also included. The lower portion of the mounting base 5 has a first threaded hole 10. The first screw 9 passes through the first threaded hole 10 and extends into the chute 2. The first screw 9 prevents the limiter 4 from sliding downward and disengaging from the chute 2.

[0048] Wherein, both opposite sides of the tensioning drum 1 are provided with bosses 11. Through the arrangement of the bosses 11, the chain plate 78 is prevented from running off.

[0049] The counterweight 6 comprises a hook 61, a second screw 62, a first mounting plate 63, and a counterweight 64. The hook 61 is mounted on the first shaft 3 and has a second threaded hole 65. The second screw 62 passes through the second threaded hole 65 and extends below the first shaft 3. The first mounting plate 63 is fixed to the hook 61, and the counterweight 64 is detachably connected to the first mounting plate 63. After the first shaft 3 is installed, the hook 61 is mounted on the first shaft 3, and the second screw 62 then blocks the opening below the hook 61 to prevent the first mounting plate 63 and the counterweight 64 from falling out. The detachable counterweight 64 allows for replacement of counterweights 64 of different weights according to the actual usage environment, providing strong adaptability.

[0050] The telescopic chain conveyor body 7 further comprises a fixed frame 71, a telescopic frame, guide rollers 73, a chain drive mechanism 74, a telescopic drive mechanism 75, a sprocket 76, and a chain 77. The telescopic frame is slidably connected to the fixed frame 71 and has at least two telescopic sections 72. In this embodiment, the telescopic sections 72 comprise three sections. Adjacent telescopic sections 72 slide together. The fixed frame 71 and each telescopic section 72 each comprise at least two guide rollers 73. In this embodiment, the fixed frame 71 comprises three guide rollers 73, and each telescopic section 72 comprises two guide rollers 73 at each end. The chain plate drive mechanism 74, the telescopic drive mechanism 75, and the mounting seat 5 are all fixed in the fixed frame 71, and the chain plate 78 passes around each guide roller 73, the chain plate drive mechanism 74, and the tensioning roller 1 and surrounds them. The right end of the fixed frame 71 and the left and right ends of the remaining telescopic sections 72 except the rightmost telescopic section 72 are all provided with sprockets 76. The chain 77 in the fixed frame 71 passes around the telescopic drive mechanism 75 and the sprocket 76 therein, and the chain 77 in the telescopic section 72 passes around the two sprockets 76 therein. The chain 77 above the sprocket 76 in the fixed frame 71 is fixedly connected to the telescopic section 72 of the leftmost section, and the chain 77 below the sprocket 76 in the telescopic section 72 of the leftmost section is fixedly connected to the fixed frame 71. The chain 77 above the sprocket 76 in the telescopic section 72 is fixedly connected to the next telescopic section 72, and the chain 77 below the sprocket 76 in the next telescopic section 72 is fixedly connected to the previous telescopic section 72. When contraction adjustment is required, the telescopic drive mechanism 75 rotates counterclockwise, driving the chain 77 in the fixed frame 71 to rotate counterclockwise, causing the telescopic section 72 of the leftmost section to retract to the left into the fixed frame 71; since the chain 77 in the telescopic section 72 of the leftmost section is fixedly connected to the fixed frame 71, when the telescopic section 72 of the leftmost section is retracted to the left into the fixed frame, the chain 77 in the telescopic section 72 of the leftmost section drives the telescopic section 72 of the middle section to retract to the left into the telescopic section 72 of the leftmost section; similarly, since the chain 77 in the telescopic section 72 of the middle section is fixedly connected to the telescopic section 72 of the leftmost section, when the telescopic section 72 of the middle section is retracted to the left into the telescopic section 72 of the leftmost section, the chain 77 in the telescopic section 72 of the middle section drives the telescopic section 72 of the rightmost section to retract to the left into the telescopic section 72 of the middle section. The principle of extension adjustment is opposite to that of contraction adjustment, which will not be described in detail here. In this way, through the linkage of the chain 77, only one telescopic driving mechanism 75 is needed to achieve the synchronous telescopic extension and retraction of each telescopic segment 72, thereby reducing costs.

[0051] The front and rear walls of the telescopic section 72 are both equipped with telescopic guide mechanisms 79. The fixed frame 71 and the front and rear walls of all telescopic sections 72 except the rightmost telescopic section 72 are equipped with guide bars 710 that cooperate with the guide mechanisms. The telescopic guide mechanisms 79 and guide bars 710 provide guidance during the telescopic process, preventing deviation.

[0052] The telescopic guide mechanism 79 includes a connecting frame 791, a second mounting plate 792, a heavy-duty bearing 793, and a guide wheel 794. The second mounting plate 792 is fixed to the front and rear ends of the connecting frame 791. The heavy-duty bearings 793 are rotatably connected to the upper and lower sides of the second mounting plate 792. The guide bar 710 passes between the upper and lower heavy-duty bearings 793. The front and rear ends of the connecting frame 791 are rotatably connected to the guide wheels 794. The inner side of the guide bar 710 contacts the guide wheels 794. The heavy-duty bearings 793 on the upper and lower sides provide vertical positioning, while the guide wheels 794 provide horizontal positioning, ensuring smooth telescopic movement.

[0053] The structure further includes a roller 12. The roller 12 is fixed to the fixed frame 71 and the right ends of the remaining telescopic sections 72 except the rightmost telescopic section 72. The telescopic section 72 and the roller 12 are in rolling cooperation. The roller 12 includes a second shaft 121, a stop nut 122, a rolling bearing 123, and a sleeve 124. The rolling bearing 123 is fixed to the second shaft 121, and the sleeve 124 is fixed to the rolling bearing 123. The second shaft 121 on both sides of the rolling bearing 123 is screwed with a stop nut 122. The setting of the roller 12 plays a supporting and guiding role for each telescopic section 72. Combined with the setting of the guide structure, the stability of the telescopic section 72 during the telescopic process is further improved. The position of the rolling bearing and the sleeve 124 can be adjusted forward and backward through the stop nut 122 to adapt to the support of telescopic sections 72 of different widths.

[0054] The cargo guide frame 13, a light 14, a power-off button 15, an emergency stop button 16, a rubber strip 17, and an electric control box 18 are also included. The cargo guide frame 13 is fixed to the front and rear sides of the top of the fixed frame 71. The cargo guide frame 13 is located on the front and rear sides of the chain plate 78. The right end of the rightmost telescopic section 72 is provided with a light 14, a rubber strip 17, and a power-off button 15. The rightmost end of the rubber strip 17 is located to the right of the rightmost end of the power-off button 15. The emergency stop button 16 is provided on the side wall of the rightmost telescopic section 72. The electric control box 18 is provided on the side wall of the fixed frame 71. The power-off button 15 and the emergency stop button 16 are both electrically connected to the electric control box 18. The electric control box 18 is electrically connected to the light 14, the chain plate drive mechanism 74, and the telescopic drive mechanism 75. The cargo guide frame 13 is provided to guide and transport the cargo. The light 14 is used for lighting and warning. When the rightmost telescopic section 72 extends rightward and strikes an obstacle, the obstacle squeezes and deforms the rubber strip 17. When the rubber strip 17 deforms to a certain degree, the obstacle presses the power-off button 15, which transmits a power-off signal to the electrical control box 18. This controls the telescopic drive mechanism 75 to shut off power, halting the extension of the telescopic section 72. The rubber strip 17 acts as a buffer, preventing obstacles from directly impacting the power-off button 15. The emergency stop button 16 allows for manual power-off.

[0055] The control method of the present invention is to automatically control through the electric control box 18. The control circuit of the electric control box 18 can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A telescopic chain conveyor, characterized in that: The telescopic chain conveyor comprises a main body of a telescopic chain conveyor, wherein the main body of the telescopic chain conveyor has a closed-loop chain; A mounting seat, wherein the mounting seats are fixed to two opposite side walls of the telescopic chain conveyor body, and the mounting seats have a slide groove therein; a first shaft, wherein both ends of the first shaft have a limiting portion, the limiting portion is inserted into the slide groove and can slide up and down along the slide groove; a tensioning roller rotatably connected to the middle portion of the first shaft and hung on the chain plate; A counterweight is installed on the first shaft.

2. The telescopic chain conveyor according to claim 1, characterized in that: The two opposite side walls of the limiting portion are both planes, and the planes are in contact with the inner side walls of the sliding groove.

3. The telescopic chain conveyor according to claim 1, characterized in that: Also included is a first screw; The lower portion of the mounting seat has a first threaded hole, and the first screw passes through the first threaded hole and extends into the sliding groove.

4. The telescopic chain conveyor according to claim 1, characterized in that: The tensioning roller has bosses on both opposite sides.

5. The telescopic chain conveyor according to claim 1, characterized in that: The counterweight comprises a hook, a second screw, a first mounting plate, and a counterweight block; The hook is hung on the first shaft; The hook has a second threaded hole, and the second screw passes through the second threaded hole and extends to below the first shaft; The first mounting plate is fixed to the hook; The counterweight block is detachably connected to the first mounting plate.

6. The telescopic chain conveyor according to claim 1, characterized in that: The telescopic chain conveyor body further comprises a fixed frame, a telescopic frame, a guide roller, a chain drive mechanism, a telescopic drive mechanism, a sprocket, and a chain; The telescopic frame is slidably connected to the fixed frame, and the telescopic frame has at least two telescopic sections, and two adjacent telescopic sections are slidably fitted together; At least two guide rollers are provided in the fixed frame and in each of the telescopic sections; The chain plate driving mechanism, telescopic driving mechanism, and mounting seat are all fixed in the fixed frame; The chain plate passes around each of the guide rollers, the chain plate driving mechanism, and the tensioning roller and surrounds them; The right end of the fixed frame and the left and right ends of the remaining telescopic sections except the rightmost telescopic section are provided with sprockets; The chain in the fixed frame passes around the telescopic drive mechanism and the sprocket therein, and the chain in the telescopic section passes around the two sprockets therein; The chain above the sprocket in the fixed frame is fixedly connected to the telescopic section of the leftmost section; The chain below the sprocket in the telescopic section of the leftmost section is fixedly connected to the fixed frame; The chain above the sprocket in the telescopic section is fixedly connected to the telescopic section of the next section; The chain below the sprocket in the telescopic section of the latter section is fixedly connected to the telescopic section of the former section.

7. The telescopic chain conveyor according to claim 6, characterized in that: The front and rear side walls of the telescopic section are both provided with telescopic guide mechanisms; The fixed frame and the front and rear side walls of the remaining telescopic sections except the rightmost telescopic section are all provided with guide strips that cooperate with the guide mechanism.

8. The telescopic chain conveyor according to claim 7, characterized in that: The telescopic guide mechanism includes a connecting frame, a second mounting plate, a heavy-duty bearing, and a guide wheel; A second mounting plate is fixed to both the front and rear ends of the connecting frame; The upper and lower sides of the second mounting plate are rotatably connected to heavy-duty bearings, and the guide bar passes between the heavy-duty bearings on the upper and lower sides; The front and rear ends of the connecting frame are both rotatably connected with guide wheels, and the inner side surfaces of the guide strips are in contact with the guide wheels.

9. The telescopic chain conveyor according to claim 6, characterized in that: Also included are rollers; The fixed frame and the right ends of the remaining telescopic sections except the rightmost telescopic section are all fixed with rollers; The telescopic section and the roller are in rolling cooperation; The roller includes a second shaft, a stop nut, a rolling bearing, and a sleeve; The rolling bearing is fixed to the second shaft, and the sleeve is fixed to the rolling bearing; The second shaft on both the front and rear sides of the rolling bearing is threaded with a retaining nut.

10. The telescopic chain conveyor according to claim 6, characterized in that: It also includes cargo guide racks, lights, power off buttons, emergency stop buttons, rubber strips, and an electric control box; Cargo guide frames are fixed on both the front and rear sides of the top of the fixed frame, and the cargo guide frames are located on the front and rear sides of the chain plate; The right end of the rightmost telescopic section is provided with a light, a rubber strip, and a power-off button; The rightmost end of the rubber strip is located to the right of the rightmost end of the power-off button; The emergency stop button is arranged on the side wall of the rightmost telescopic section; The electric control box is arranged on the side wall of the fixed frame; The power-off button and the emergency stop button are both electrically connected to the electric control box, and the electric control box is electrically connected to the lamp, the chain plate driving mechanism and the telescopic driving mechanism.

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