CN113247691A

CN113247691A - Cable conveyor for network communication

Info

Publication number: CN113247691A
Application number: CN202110512767.2A
Authority: CN
Inventors: 时建华; 毕泽
Original assignee: Individual
Current assignee: Shanxi Jinshi Electric Power Development Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-08-13
Anticipated expiration: 2041-05-11
Also published as: CN113247691B

Abstract

The invention discloses a cable conveyer for network communication, belonging to the technical field of cable laying, which is characterized by comprising a mobile platform and a reel, wherein the surface of the reel is wound with a cable, the bottom of the mobile platform is fixedly connected with universal wheels which are uniformly distributed, the top of the mobile platform is rotatably connected with a rotating plate, the top of the mobile platform is fixedly connected with a limiting component which is in contact with the rotating plate, and the limiting component is positioned on the right side of the rotating plate. Has good improvement significance.

Description

Cable conveyor for network communication

Technical Field

The invention relates to the technical field of cable laying, in particular to a cable conveyor for network communication.

Background

The cable conveyer is an electric machine for laying underground large-scale power cables or communication cables, and utilizes the inner side rubber track to clamp and convey the cables to carry out operations such as large-scale cable arrangement, tunnel transmission, long-distance conveying and the like, so that the construction is convenient and rapid, manpower and material resources can be greatly saved, and the construction cost is effectively reduced.

At present, the reel that has the cable is most comparatively heavy, the staff is before laying the cable, need the staff to use fork truck, special vehicle such as loop wheel machine installs the reel on rotary device, can install into cable feeding machine and carry out work, this cost that just makes the cable laying engineering improves, and, at the in-process of installation reel, need have the staff to assist in the reel next door and fix a position, this working strength that not only can improve the staff, when the reel installation is wrong, still very easily take place the incident, this danger that will improve the operation, great limitation has.

Disclosure of Invention

1. Technical problem to be solved

In view of the problems in the prior art, it is an object of the present invention to provide a cable conveyor for network communication, which is advantageous in that it is possible to quickly replace a reel, and it is possible to reduce the difficulty and risk of replacing the reel.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A cable conveyer for network communication comprises a mobile platform and a reel, wherein a cable is wound on the surface of the reel, universal wheels which are uniformly distributed are fixedly connected to the bottom of the mobile platform, a rotating plate is rotatably connected to the top of the mobile platform, a limiting component which is in contact with the rotating plate is fixedly connected to the top of the mobile platform, the limiting component is positioned on the right side of the rotating plate, two U-shaped supporting rods are fixedly connected to the top of the rotating plate, the tops of the two U-shaped supporting rods are rotatably connected with the reel, a fixing plate which is positioned on the right side of the reel is fixedly connected to the top of the mobile platform, a controller is fixedly connected to the front side of the fixing plate, a servo motor is fixedly connected to the top of the fixing plate, the input end of the servo motor is electrically connected with the output end of the controller, and two transmission wheels are fixedly connected to the output shaft of the servo motor, the surface of drive wheel is twined there is the driving rope, the driving rope is kept away from adjacent one side of driving rope with adjacent U type bracing piece fixed connection.

Further, moving platform's bottom fixedly connected with evenly distributed's cylinder, the input of cylinder and the output electric connection of controller, the bottom fixedly connected with locating plate of cylinder, the bottom fixedly connected with evenly distributed of locating plate grabs ground tooth.

Further, spacing subassembly includes the fixed block, the bottom of fixed block and moving platform's top fixed connection, the inner wall sliding connection of fixed block has the stopper, the left side of stopper run through the fixed block and contact with the top of rotor plate.

Furthermore, stopper right side fixedly connected with spring, the right side of spring and the inner wall right side fixed connection of fixed block.

Further, the inner wall right side fixedly connected with electro-magnet of fixed block, the input of electro-magnet and the output electric connection of controller, the right side fixedly connected with metal sheet of stopper, the metal sheet is the iron material component.

Further, the inner wall right side fixedly connected with quantity of fixed block is two first gag lever post, the left side of first gag lever post run through the stopper and with the inner wall left side fixed connection of fixed block.

Furthermore, a treatment opening is formed in the left side of the fixing plate, two cleaning wheels are rotatably connected to the inner wall of the treatment opening, a cleaning pad is bonded to the surface of each cleaning wheel, and each cleaning pad is a sponge material member.

Further, the smooth storehouse that quantity was two and all communicates with the processing mouth is seted up to the inside of fixed plate, two smooth storehouse is located one side of processing the mouth respectively, the top the left and right sides of clean wheel all rotates and is connected with the connecting rod, the connecting rod is kept away from adjacently one side of clean wheel is run through adjacently smooth storehouse extends to adjacently the inside in smooth storehouse, the back the interior diapire in smooth storehouse rotates and is connected with the lead screw, the top of lead screw is run through the back the connecting rod and with the back smooth storehouse rotates and is connected, the right side of fixed plate rotates and is connected with the regulation pole, the left side of adjusting the pole runs through fixed plate and back in proper order smooth storehouse extends to the back the inside in smooth storehouse, the left side of adjusting the pole and the equal fixedly connected with conical gear in surface of lead screw, two the conical gear meshing is connected.

Furthermore, the right side of the fixed plate is provided with limit grooves which are distributed annularly, the right side of the adjusting rod is inserted with a limit pin, and the left side of the limit pin penetrates through the adjusting rod and is inserted with the adjacent limit grooves.

Furthermore, the front side of the inner top wall of the sliding bin is fixedly connected with a second limiting rod, and the bottom of the second limiting rod penetrates through the front side of the connecting rod and is fixedly connected with the front side of the inner bottom wall of the sliding bin.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) according to the scheme, the servo motor is arranged, when the reel needs to be replaced by an operator, the servo motor can quickly prolong the transmission rope, the reel is placed on the ground, and the replacement of the reel is facilitated for the operator, so that the difficulty of replacing the reel by the operator can be reduced, the work load of the operator is reduced, the time required by replacing the reel is greatly shortened, the work efficiency of the operator is improved, and the improvement significance is good;

(2) through the matching use of the electromagnet and the metal plate, when workers need to replace the reel, the electromagnet enables the metal plate to move the limiting block to be quickly separated from the rotating plate through adsorbing the metal plate, and further a good separation effect is achieved;

(3) by arranging the first limiting rod, the running track of the limiting block can be limited, the limiting block can be guaranteed to normally move, and a good limiting effect is achieved;

(4) by arranging the adjusting rod, when workers need to clean cables with other diameters, the adjusting rod can drive the screw rod to rotate, so that the screw rod drives the top cleaning wheels to move, the distance between the two cleaning wheels is adjusted to be a proper size, and a good adjusting effect is achieved;

(5) by arranging the limiting pin, when a worker does not need to adjust the distance between the two cleaning wheels, the limiting pin can firmly fix the adjusting rod, so that the cleaning pad can effectively clean cables, and a good limiting effect is achieved;

(6) through setting up the second gag lever post, can inject the removal orbit that the cleaning wheel removed, rotatory probability when reducing the cleaning wheel in top and removing, and then play good spacing effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a schematic view of the arrangement of the cleaning wheels of the present invention;

FIG. 4 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 5 is an enlarged view taken at B of FIG. 2 in accordance with the present invention;

fig. 6 is an enlarged view of the invention at C in fig. 3.

The reference numbers in the figures illustrate:

1. a mobile platform; 2. a fixing plate; 201. a treatment port; 202. sliding the bin; 203. a limiting groove; 3. a controller; 4. a servo motor; 5. a driving wheel; 501. a drive rope; 6. a rotating plate; 7. a U-shaped support rod; 8. a reel; 9. a limiting component; 901. a fixed block; 902. a limiting block; 903. a first limit rod; 904. a spring; 905. an electromagnet; 906. a metal plate; 10. a cleaning wheel; 1001. a cleaning pad; 1002. a connecting rod; 11. a cylinder; 12. positioning a plate; 1201. a ground gripping tooth; 13. a universal wheel; 14. a screw rod; 15. a second limiting rod; 16. a spacing pin; 17. adjusting a rod; 18. a bevel gear.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Referring to fig. 1-6, in an embodiment of the present invention, a cable conveyor for network communication includes a mobile platform 1 and a reel 8, a cable is wound on the surface of the reel 8, the bottom of the mobile platform 1 is fixedly connected with universal wheels 13 uniformly distributed, the top of the mobile platform 1 is rotatably connected with a rotating plate 6, the top of the mobile platform 1 is fixedly connected with a limiting assembly 9 contacting with the rotating plate 6, the limiting assembly 9 is located on the right side of the rotating plate 6, the top of the rotating plate 6 is fixedly connected with two U-shaped support rods 7, the tops of the two U-shaped support rods 7 are both rotatably connected with the reel 8, the top of the mobile platform 1 is fixedly connected with a fixed plate 2 located on the right side of the reel 8, the front of the fixed plate 2 is fixedly connected with a controller 3, the top of the fixed plate 2 is fixedly connected with a servo motor 4, the input end of the servo motor 4 is electrically connected with the output end of the controller 3, the output shaft of servo motor 4 fixedly connected with quantity is the drive wheel 5 of two, and the surface winding of drive wheel 5 has drive rope 501, and one side and adjacent U type bracing piece 7 fixed connection that adjacent drive rope 501 was kept away from to drive rope 501.

Referring to fig. 1 and 2, the bottom fixedly connected with evenly distributed cylinder 11 of moving platform 1, the input of cylinder 11 and the output electric connection of controller 3, the bottom fixedly connected with locating plate 12 of cylinder 11, the bottom fixedly connected with evenly distributed of locating plate 12 grabs ground tooth 1201, through setting up ground tooth 1201, can increase the frictional force of moving platform 1 and ground, make reel 8 can be more firm when the delivery cable, and the use of cooperation cylinder 11, can use according to the actual demand, and then make the practicality of device improve by a wide margin.

Referring to fig. 4, the limiting assembly 9 comprises a fixing block 901, the bottom of the fixing block 901 is fixedly connected with the top of the moving platform 1, a limiting block 902 is slidably connected to the inner wall of the fixing block 901, the left side of the limiting block 902 penetrates through the fixing block 901 and contacts with the top of the rotating plate 6, and by means of the limiting block 902, when the reel 8 normally runs, the limiting block 902 can firmly fix the reel 8 on the moving platform 1, so that the situation that the cable is normally conveyed due to shaking of the reel 8 during rotation is avoided.

Referring to fig. 4, stopper 902 right side fixedly connected with spring 904, the right side of spring 904 and the inner wall right side fixed connection of fixed block 901 through setting up spring 904, not only can improve the compactness that stopper 902 and rotor plate 6 are connected, and after the staff closed electro-magnet 905, spring 904 can also release fixed block 901 fast with stopper 902, and then plays good effect that resets.

Referring to fig. 4, the inner wall right side fixedly connected with electro-magnet 905 of fixed block 901, the input of electro-magnet 905 and the output electric connection of controller 3, the right side fixedly connected with metal sheet 906 of stopper 902, metal sheet 906 is the iron material component, use through the cooperation of electro-magnet 905 and metal sheet 906, when the staff need change reel 8, electro-magnet 905 is through adsorbing metal sheet 906, make metal sheet 906 drive stopper 902 and rotor plate 6 quickly separating, and then play good separation effect.

Referring to fig. 4, the inner wall right side fixedly connected with quantity of the fixed block 901 is two first limiting rods 903, the left side of the first limiting rod 903 penetrates through the limiting block 902 and is fixedly connected with the inner wall left side of the fixed block 901, the running track of the limiting block 902 can be limited by setting the first limiting rods 903, the limiting block 902 can normally move, and a good limiting effect is achieved.

Referring to fig. 1, fig. 2, fig. 3 and fig. 6, a processing opening 201 has been seted up on the left side of fixed plate 2, the inner wall of processing opening 201 rotates and is connected with the cleaning wheel 10 that quantity is two, cleaning wheel 10's surface bonds has cleaning pad 1001, cleaning pad 1001 is the sponge material component, through setting up cleaning wheel 10, when the inside of cable through cleaning wheel 10, the cable can drive cleaning wheel 10 rotatory, make cleaning wheel 10 drive cleaning pad 1001 clear up the surperficial impurity of cable fast, and then play good clearance effect.

Referring to fig. 3, 4 and 6, two sliding bins 202 are disposed inside the fixed plate 2 and are communicated with the processing port 201, the two sliding bins 202 are respectively located at one side of the processing port 201, the left and right sides of the top cleaning wheel 10 are rotatably connected with a connecting rod 1002, one side of the connecting rod 1002 far away from the adjacent cleaning wheel 10 penetrates through the adjacent sliding bins 202 and extends to the inside of the adjacent sliding bins 202, the inner bottom wall of the back sliding bin 202 is rotatably connected with a lead screw 14, the top of the lead screw 14 penetrates through the back connecting rod 1002 and is rotatably connected with the back sliding bin 202, the right side of the fixed plate 2 is rotatably connected with an adjusting rod 17, the left side of the adjusting rod 17 sequentially penetrates through the fixed plate 2 and the back sliding bins 202 and extends to the inside of the back sliding bin 202, the left side of the adjusting rod 17 and the surface of the lead screw 14 are fixedly connected with a bevel gear 18, the two bevel gears 18 are meshed and connected, by arranging the adjusting rod 17, when a worker needs to clean cables with other diameters, the adjusting rod 17 can drive the screw rod 14 to rotate, so that the screw rod 14 drives the top cleaning wheels 10 to move, the distance between the two cleaning wheels 10 is adjusted to a proper size, and a good adjusting effect is achieved.

Referring to fig. 4, the limit groove 203 that the annular distributes is seted up on the right side of fixed plate 2, it has the spacer pin 16 to peg graft on the right side of adjusting pole 17, the left side of spacer pin 16 runs through adjusting pole 17 and pegs graft with adjacent limit groove 203, through setting up spacer pin 16, when the staff need not adjust the interval of two clean wheels 10, spacer pin 16 can firmly fix adjusting pole 17, make cleaning pad 1001 can effectively clean the cable, and then play good spacing effect.

Referring to fig. 3, the inner top wall of the front sliding bin 202 is fixedly connected with a second limiting rod 15, the bottom of the second limiting rod 15 penetrates through the front connecting rod 1002 and is fixedly connected with the inner bottom wall of the front sliding bin 202, the moving track of the cleaning wheel 10 can be limited by arranging the second limiting rod 15, the probability of rotation of the top cleaning wheel 10 during moving is reduced, and a good limiting effect is achieved.

The working principle of the invention is as follows: when the reel 8 needs to be replaced, the worker firstly controls the opening of the electromagnet 905 through the controller 3, the electromagnet 905 adsorbs the metal plate 906 to the right, the electromagnet 905 and the metal plate 906 are matched for use, when the reel 8 needs to be replaced, the electromagnet 905 adsorbs the metal plate 906, so that the metal plate 906 drives the limit block 902 and the rotating plate 6 to be quickly separated, a good separation effect is achieved, the operation track of the limit block 902 can be limited through the arrangement of the first limit rod 903, the normal movement of the limit block 902 can be guaranteed, the good limit effect is achieved, the metal plate 906 drives the limit block 902 to move to the right, through the arrangement of the limit block 902, when the reel 8 normally operates, the limit block 902 can firmly fix the reel 8 on the moving platform 1, and the situation that the normal conveying of a cable is influenced due to the shaking of the reel 8 during rotation is avoided, make stopper 902 and rotor plate 6 separate, through setting up stopper 902, when reel 8 normally rotates, stopper 902 can firmly fix reel 8 on moving platform 1, avoids rocking when rotatory because of reel 8, and the condition that influences the normal transport of cable takes place. After the rotating plate 6 is separated from the limiting block 902, a worker pushes the U-shaped supporting rod 7 leftwards to rotate the U-shaped supporting rod 7 leftwards, then the worker controls the servo motor 4 to be opened through the controller 3, the servo motor 4 simultaneously drives the two driving wheels 5 to extend the driving rope 501, the U-shaped supporting rod 7 drives the reel 8 to do uniform-speed anticlockwise motion, when the reel 8 is in contact with the ground, the worker can detach the reel 8 from the U-shaped supporting rod 7, then a new reel 8 is installed on the U-shaped supporting rod 7, then the worker controls the servo motor 4 to rotate reversely through the controller 3, the servo motor 4 simultaneously drives the two driving wheels 5 to tighten the driving rope 501, the driving rope 501 drives the U-shaped supporting rod 7 to rotate clockwise, the U-shaped supporting rod 7 drives the reel 8 to rotate clockwise, and when the reel 8 is erected, the worker simultaneously closes the servo motor 4 and the limiting block 902 through the, the servo motor 4 stops contracting the transmission rope 501, meanwhile, after the metal plate 906 loses adsorption force, the spring 904 quickly pushes the limit block 902 out of the fixed block 901 and presses the rotating plate 6, through the arrangement of the spring 904, the connection tightness between the limit block 902 and the rotating plate 6 can be improved, after an electromagnet 905 is closed by a worker, the spring 904 can quickly push the limit block 902 out of the fixed block 901, a good reset effect is achieved, the worker can normally work, through the arrangement of the ground grabbing teeth 1201, the friction force between the moving platform 1 and the ground can be increased, the reel 8 can be more stable when a cable is conveyed, the reel can be used according to actual requirements by matching with the cylinder 11, and the practicability of the device is greatly improved;

when impurities exist on the surface of the cable, a worker firstly measures the diameter of the cable, then pulls down the limit pin 16 and rotates the adjusting rod 17, through the limit pin 16, when the worker does not need to adjust the distance between the two cleaning wheels 10, the limit pin 16 can firmly fix the adjusting rod 17, so that the cleaning pad 1001 can effectively clean the cable, and a good limiting effect is achieved, through the adjusting rod 17, when the worker needs to clean cables with other diameters, the adjusting rod 17 can drive the screw rod 14 to rotate, so that the screw rod 14 drives the top cleaning wheel 10 to move, the distance between the two cleaning wheels 10 is adjusted to a proper size, and a good adjusting effect is achieved, the adjusting rod 17 drives the screw rod 14 to rotate through the bevel gear 18, the screw rod 14 drives the back connecting rod 1002 to move, the back connecting rod 1002 drives the top cleaning wheel 10 to move, through the second limit rod 15, can inject the removal orbit that cleaning wheel 10 removed, reduce the rotatory probability when clean wheel 10 in top removes, and then play good spacing effect, through setting up cleaning wheel 10, when the inside of cable through cleaning wheel 10, the cable can drive cleaning wheel 10 rotatory, make cleaning wheel 10 drive the impurity of the quick clearance cable surface of cleaning pad 1001, and then play good clearance effect, until the interval adjustment of two cleaning wheels 10 to can clear up cable surface impurity, then it has with spacer pin 16 through adjusting pole 17 and pegging graft with corresponding spacing groove 203, the staff passes the cable from the opposite side of two cleaning wheels 10, simultaneously cleaning pad 1001 clears up the impurity on cable surface fast.

It should be noted that, in the above description, the controller 3, the servo motor 4, the electromagnet 905 and the cylinder 11 are all devices that are mature in application in the prior art, and a specific model can be selected according to actual needs, and meanwhile, power supplied by the controller 3, the servo motor 4, the electromagnet 905 and the cylinder 11 can be supplied to a built-in power supply or a commercial power supply, and a specific power supply mode is selected according to circumstances and is not described herein.

The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A cable conveyor for network communication, comprising a mobile platform (1) and a conveniently detachable reel (8), characterized in that: the surface winding of reel (8) has the cable, the bottom fixedly connected with evenly distributed's of moving platform (1 universal wheel (13), the top of moving platform (1) is rotated and is connected with rotor plate (6), the spacing subassembly (9) of the top fixedly connected with and rotor plate (6) contact of moving platform (1), spacing subassembly (9) are located the right side of rotor plate (6), the top fixedly connected with quantity of rotor plate (6) is U type bracing piece (7) of two, two the top of U type bracing piece (7) all rotates with reel (8) to be connected, the top fixedly connected with of moving platform (1) is located fixed plate (2) on reel (8) right side, the positive fixedly connected with controller (3) of fixed plate (2), the top fixedly connected with servo motor (4) of fixed plate (2), the input of servo motor (4) and the output electric connection of controller (3), the output shaft fixedly connected with quantity of servo motor (4) is drive wheel (5) of two, the surface winding of drive wheel (5) has drive rope (501), it is adjacent that drive rope (501) are kept away from in drive rope (501) one side and adjacent U type bracing piece (7) fixed connection.

2. A cable conveyor for network communications according to claim 1, wherein: the floor-cleaning device is characterized in that the bottom of the moving platform (1) is fixedly connected with cylinders (11) which are uniformly distributed, the input end of each cylinder (11) is electrically connected with the output end of the controller (3), the bottom of each cylinder (11) is fixedly connected with a positioning plate (12), and the bottom of each positioning plate (12) is fixedly connected with ground-grabbing teeth (1201) which are uniformly distributed.

3. A cable conveyor for network communications according to claim 1, wherein: the limiting assembly (9) comprises a fixing block (901), the bottom of the fixing block (901) is fixedly connected with the top of the moving platform (1), a limiting block (902) is connected to the inner wall of the fixing block (901) in a sliding mode, and the left side of the limiting block (902) penetrates through the fixing block (901) and contacts with the top of the rotating plate (6).

4. A cable conveyor for network communications according to claim 3, wherein: the right side of the limiting block (902) is fixedly connected with a spring (904), and the right side of the spring (904) is fixedly connected with the right side of the inner wall of the fixing block (901).

5. A cable conveyor for network communications according to claim 3, wherein: the inner wall right side fixedly connected with electro-magnet (905) of fixed block (901), the input of electro-magnet (905) and the output electric connection of controller (3), the right side fixedly connected with metal sheet (906) of stopper (902), metal sheet (906) are the iron material component.

6. A cable conveyor for network communications according to claim 3, wherein: the right side of the inner wall of the fixing block (901) is fixedly connected with two first limiting rods (903), and the left side of each first limiting rod (903) penetrates through the limiting block (902) and is fixedly connected with the left side of the inner wall of the fixing block (901).

7. A cable conveyor for network communications according to claim 1, wherein: the left side of the fixing plate (2) is provided with a treatment opening (201), the inner wall of the treatment opening (201) is rotatably connected with two cleaning wheels (10), the surface of each cleaning wheel (10) is bonded with a cleaning pad (1001), and each cleaning pad (1001) is a sponge material component.

8. A cable conveyor for network communications according to claim 7, wherein: the cleaning device is characterized in that two sliding bins (202) which are communicated with a processing port (201) are arranged in the fixing plate (2), the two sliding bins (202) are respectively located at one side of the processing port (201), the top of the cleaning wheel (10) is connected with connecting rods (1002) in a rotating mode, one side, far away from the adjacent cleaning wheel (10), of each connecting rod (1002 penetrates through the adjacent sliding bin (202) and extends to the adjacent inner part of the sliding bin (202), the back of the cleaning wheel is connected with a lead screw (14) in a rotating mode, the top of the lead screw (14) penetrates through the back of the connecting rod (1002) and is connected with the back of the sliding bin (202) in a rotating mode, the right side of the fixing plate (2) is connected with an adjusting rod (17) in a rotating mode, the left side of the adjusting rod (17) penetrates through the fixing plate (2) and the back of the sliding bin (202) in sequence and extends to the back of the sliding bin (202), the left side of the adjusting rod (17) and the surface of the screw rod (14) are fixedly connected with bevel gears (18), and the two bevel gears (18) are meshed and connected.

9. A cable conveyor for network communications according to claim 8, wherein: the right side of the fixed plate (2) is provided with limit grooves (203) which are distributed annularly, the right side of the adjusting rod (17) is inserted with a limit pin (16), and the left side of the limit pin (16) penetrates through the adjusting rod (17) and is inserted with the adjacent limit grooves (203).

10. A cable conveyor for network communications according to claim 8, wherein: the inner top wall of the sliding bin (202) is fixedly connected with a second limiting rod (15), and the bottom of the second limiting rod (15) penetrates through the front side of the connecting rod (1002) and is fixedly connected with the inner bottom wall of the sliding bin (202).