Mechanical hand dedicated to environmental equipment

Abstract

The application belongs to the technical field of environmental protection equipment, and particularly relates to a mechanical hand special for environmental protection equipment, which comprises a mounting plate, first screw rods are arranged at positions close to the front and rear sides of the bottom of the mounting plate, fixing plates are rotatably sleeved with the first screw rods at positions close to the two ends of the first screw rods, one end of one of the first screw rods is connected with a first motor, a transmission device is arranged between the ends of the two first screw rods away from the first motor, and a plurality of clamping jaws are sleeved with the first screw rods. When the two second screw rods drive the clamping jaws to approach each other to grab the easy-open cans, the first screw rods can drive the first sliding blocks to slide along the sliding holes while the pressing plates are static, when the two first screw rods rotate, the first screw rods can drive the two pressing plates to approach the easy-open cans at the same time through the action force on the first sliding blocks, so that the compression operation on the easy-open cans is realized, and the storage space of the easy-open cans is saved.

Description

Technical Field

[0001] This invention belongs to the field of environmental protection equipment technology, and specifically relates to a robotic arm for environmental protection equipment. Background Technology

[0002] As people's environmental awareness continues to rise, garbage sorting is gradually being promoted. When garbage is transported to the garbage treatment center, manual sorting is required for some recyclable waste, such as metals and plastics. However, due to the large amount of labor involved, some garbage sorting centers have deployed intelligent robotic arms to help people complete the sorting of recyclable waste.

[0003] Waste sorting equipment is an important type of environmentally friendly processing equipment used to separate recyclables from different types of items such as garbage. With increasing global environmental awareness, waste treatment technology is constantly improving and developing.

[0004] During the operation of this type of robotic arm, many factors, such as the type of waste, its size and shape, and the distance between the waste and the robotic arm, can affect its ability to sort waste effectively. To address this, Chinese patent CN209737622U proposes a robotic arm specifically designed for environmental protection equipment. This arm includes a base, a wrist rest, and gripping fingers. A first motor is installed inside the base and bolted to it. A small gear is mounted on the first motor. By mechanically picking up plastic bottles from a conveyor belt, it reduces manual labor intensity and allows the liquid in the bottles to flow out through gaps, preventing interference from the liquid in subsequent processing.

[0005] While the robotic arm proposed in this patent solves the problem of water retention in plastic bottles to some extent, it still has certain shortcomings in actual waste sorting. For example, when sorting aluminum cans or other large waste, the existing robotic arm cannot compress them properly or does not compress them sufficiently, resulting in a large storage space being occupied and hindering the subsequent storage and transportation of such waste. At the same time, some clay or other types of waste may adhere to the cans, requiring further manual cleaning to remove the waste from the surface before proper waste sorting and subsequent recycling.

[0006] Therefore, it is necessary to invent a robotic arm specifically for environmental protection equipment to solve the above problems. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a robotic arm specifically designed for environmental protection equipment, thereby resolving the issues raised in the background section.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a robotic arm for environmental protection equipment, comprising a mounting plate, wherein a first screw is provided at the bottom of the mounting plate near the front and rear sides, and a fixing plate is rotatably sleeved at both ends of the first screw, the fixing plate being fixedly connected to the bottom of the mounting plate, one end of one of the first screws is connected to a first motor, and a transmission device is provided between the ends of the two first screws away from the first motor, multiple grippers are sleeved on the first screw, and two sliding rods are slidably inserted through the multiple grippers along their lateral directions, and a first spring is sleeved on the portion of the sliding rod between two adjacent grippers, the two sliding rods are respectively located at the top and bottom of the first screw, and the two ends of the sliding rods are respectively fixedly connected to the two fixing plates, a compression device for squeezing bottles is provided at the ends of the two first screws, and a power component for driving the two first screws to move closer to each other is provided at the top of the same end of the two first screws.

[0009] Furthermore, the transmission device includes a first telescopic rod, which is vertically positioned in the middle of the two first screws, and a second spring is sleeved on the first telescopic rod. An L-shaped plate is fixedly connected between the bottom of the first telescopic rod and the mounting plate, and a roller is installed on the top of the first telescopic rod. The roller is connected to the end of the two first screws away from the first motor by the same first belt.

[0010] Furthermore, the compression device includes a pressure plate, which has horizontally penetrating strip-shaped sliding holes along both sides. Two first sliders are slidably installed in the sliding holes, and the two first sliders are respectively threaded onto two first screws. Strip-shaped through holes are horizontally penetrating above and below the sliding holes. The two sliders located at the top of the first screws are inserted into the through holes above the sliding holes, and the two sliders located at the bottom of the first screws are inserted into the through holes below the sliding holes.

[0011] Furthermore, the power assembly includes a second screw, which is rotatably inserted into the mounting plate along the front-back direction. Two second screws are respectively located at the top of two fixed plates on the same side, and a strip-shaped connecting hole is vertically opened on the part of the mounting plate opposite to the second screw. Two second sliders are threaded onto the second screw, and the two second sliders are respectively fixedly connected to the top of the two fixed plates on the same side. One end of one of the second screws is connected to a second motor, and a second belt is connected between the ends of the two second screws away from the second motor.

[0012] Furthermore, the threads on the first screw and the second screw are symmetrical and opposite about the midpoint of the first screw and the second screw, respectively. Multiple jaws located on the same first screw are symmetrically distributed on the first screw, and two adjacent jaws are fixedly connected to the two ends of the same first spring, wherein the middle jaw is rotatably connected to the first screw, and the remaining jaws do not contact the surface of the first screw.

[0013] Furthermore, a rectangular hole is provided through the top center of the mounting plate, and two arc-shaped scrapers are symmetrically arranged inside the rectangular hole. The scrapers are located at the bottom of the mounting plate, and a second telescopic rod is fixedly connected to the top of the scraper. A fixed rod is slidably inserted between the tops of the two second telescopic rods. A first fixing block is fixedly connected to both ends of the fixed rod, and the first fixing block is fixedly connected to the top of the mounting plate. A stop block is fixedly sleeved in the middle of the fixed rod. A third spring is sleeved on the fixed rod at both ends of the stop block, and the two ends of the third spring are fixedly connected to the stop block and the corresponding second telescopic rod, respectively. Slots are provided on the front and rear sides of the scraper, and a locking block is fixedly connected to the gripper at the corresponding position of the slot, and the locking block matches the slot.

[0014] Furthermore, multiple scraper strips are fixedly connected in parallel to the bottom of the scraper, and the scraper strips are made of rubber.

[0015] Furthermore, two limiting rods are slidably inserted between the two pressure plates. The two limiting rods are close to the front and rear sides of the mounting plate, respectively, and a second fixing block is fixedly connected to both ends of the limiting rods. The second fixing block is fixedly connected to the bottom of the mounting plate.

[0016] Furthermore, the maximum elongation of the second spring is greater than the sum of the maximum horizontal movement distances of the two first screws.

[0017] The technical effects and advantages of this invention are as follows:

[0018] 1. When the two second screws drive the grippers to approach each other to grab the can during operation, the first screw can drive the first slider to slide along the sliding hole while the pressure plate is stationary. When the two first screws rotate, the first screw can drive the two pressure plates to move closer to the can simultaneously through the force on the first slider, thereby realizing the compression operation of the can and saving the storage space of the can.

[0019] 2. When the can is clamped by the gripper during operation, the first motor is started. At this time, the two pressure plates approach each other under the action of the first screw and the first slider. When the pressure plate contacts the gripper, the gripper pushes the scraper to move along the direction of the limit rod under the pressure of the pressure plate. During this process, the first spring and the third spring are gradually compressed. As the scraper moves, the scraper strip at the bottom of the scraper and the gripper can scrape against the top and sides of the can, thereby scraping off other garbage stuck to the surface of the can, thus ensuring that the surface of the can is relatively clean and preventing other garbage from being compressed together with the can.

[0020] 3. This invention clamps the can with force by the grippers, and at the same time, it compresses the can thoroughly by the pressure plate on the unclamped side, so that the can is compressed more fully, occupies less storage space, and can prevent the can from splashing due to the can not being clamped properly during the compression process.

[0021] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a first three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0025] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the compression device in this invention.

[0027] In the diagram: 1. Mounting plate; 2. First screw; 3. Fixing plate; 4. First motor; 5. Transmission device; 51. First telescopic rod; 52. Second spring; 53. L-shaped plate; 54. Roller; 55. First belt; 6. Gripper; 7. Slide rod; 8. First spring; 9. Compression device; 91. Pressure plate; 92. First slider; 10. Power assembly; 101. Second screw; 102. Second slider; 103. Second motor; 104. Second belt; 11. Scraper; 12. Second telescopic rod; 13. Fixing rod; 14. Stop block; 15. Third spring; 16. Locking block; 17. Scraper strip; 18. Limiting rod. Detailed Implementation

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

[0029] This invention provides, for example Figures 1-4 The illustrated robotic arm for environmental protection equipment includes a mounting plate 1. First screws 2 are located near the front and rear sides of the bottom of the mounting plate 1. Fixed plates 3 are rotatably sleeved on both ends of the first screws 2. The fixed plates 3 are fixedly connected to the bottom of the mounting plate 1. One end of one of the first screws 2 is connected to a first motor 4. A transmission device 5 is located between the ends of the two first screws 2 away from the first motor 4. The transmission device 5 includes a first telescopic rod 51, which is vertically positioned in the middle of the two first screws 2. A second spring 52 is sleeved on the first telescopic rod 51. An L-shaped plate 53 is fixedly connected between the bottom of the first telescopic rod 51 and the mounting plate 1. A roller 54 is mounted on the top of the first telescopic rod 51. The roller 54... Two first screws 2 are connected by the same first belt 55 at the ends away from the first motor 4. Multiple grippers 6 are sleeved on the first screws 2. Two slide rods 7 are inserted through the grippers 6 along their sides. A first spring 8 is sleeved on the part of the slide rod 7 between two adjacent grippers 6. The two slide rods 7 are located at the top and bottom of the first screws 2, respectively. The two ends of the slide rods 7 are fixedly connected to two fixing plates 3. Compression devices 9 for squeezing bottles are provided near both ends of the two first screws 2. A power component 10 for driving the two first screws 2 to move closer to each other is provided at the top of the same end of the two first screws 2. The maximum elongation of the second spring 52 is greater than the sum of the maximum horizontal movement distances of the two first screws 2.

[0030] Before use, install the invention onto an existing robotic arm with the gripper 6 facing downwards. When it is necessary to grasp an aluminum can, the robotic arm moves the fixing plate 3 to the top of the can and adjusts its direction so that the can is positioned between the two first screws 2. Then, the robotic arm extends to bring the fixing plate 3 closer to the top of the can. Subsequently, the power assembly 10 is activated, causing the two first screws 2 to drive the multiple grippers 6 connected to them to move closer to the can. During this process, as the two first screws 2 approach each other, the first telescopic rod 51 gradually extends under the action of the second spring 52, thereby allowing the roller 54 to be positioned between the second spring 52 and the first telescopic rod 51. Under the action of the first belt 55, the first belt 55 is tightened. When the grippers 6 on the two first screws 2 approach each other, the can can be picked up from the garbage conveyor belt by the cooperation of multiple grippers 6. Then the compression device 9 is started. When the compression device 9 contacts the grippers 6, the grippers 6 begin to move along the slide bar 7 towards the middle of the mounting plate 1. The first spring 8 begins to contract under the compression of the grippers 6. As the grippers 6 continue to move, when the two compression devices 9 contact the can, the two compression devices 9 can cooperate with each other to realize the compression operation of the can, thereby saving the storage space of the can and facilitating the subsequent transfer operation of the can.

[0031] After the can is compressed, as the compression device 9 returns to its original position, the gripper 6 also returns to its original position under the action of the first spring 8, thus facilitating the gripping and compression of the next can.

[0032] like Figures 1-4 As shown, the compression device 9 includes a pressure plate 91. The pressure plate 91 has a horizontally penetrating strip-shaped sliding hole along both sides. Two first sliders 92 are slidably installed in the sliding hole, and the two first sliders 92 are respectively threaded onto two first screws 2. The top and bottom of the sliding hole are both horizontally penetrating strip-shaped through holes. The two sliders 7 located at the top of the first screw 2 are inserted into the through holes above the sliding hole, and the two sliders 7 located at the bottom of the first screw 2 are inserted into the through holes below the sliding hole. Two limiting rods 18 are slidably inserted between the two pressure plates 91. The two limiting rods 18 are close to the front and rear sides of the mounting plate 1, and the two ends of the limiting rods 18 are fixedly connected to the second fixing blocks. The second fixing blocks are fixedly connected to the bottom of the mounting plate 1.

[0033] When the two second screws 101 drive the grippers 6 to approach each other and grasp the can, the first screw 2 can drive the first slider 92 to slide along the sliding hole while the pressure plate 91 is stationary. When the two first screws 2 rotate, the first screw 2 can drive the two pressure plates 91 to approach the can simultaneously through the force on the first slider 92, thereby realizing the compression operation of the can and saving storage space of the can.

[0034] like Figures 1-3 As shown, the power assembly 10 includes a second screw 101, which is rotatably inserted into the mounting plate 1 along the front-rear direction. Two second screws 101 are respectively located at the top of two fixing plates 3 on the same side. A strip-shaped connecting hole is vertically formed on the portion of the mounting plate 1 opposite to the second screws 101. Two second sliders 102 are threaded onto the second screw 101, and the two second sliders 102 are respectively fixedly connected to the top of the two fixing plates 3 on the same side. One end of one of the second screws 101 is connected to... There is a second motor 103, and a second belt 104 is connected between the ends of the two second screws 101 away from the second motor 103. The threads on the first screw 2 and the second screw 101 are symmetrical and opposite about the midpoint of the first screw 2 and the second screw 101, respectively. Multiple grippers 6 located on the same first screw 2 are symmetrically distributed on the first screw 2, and two adjacent grippers 6 are fixedly connected to the two ends of the same first spring 8, wherein the middle gripper 6 is rotatably connected to the first screw 2, and the remaining grippers 6 do not contact the surface of the first screw 2.

[0035] When the second motor 103 is started, the two second screws 101 begin to rotate under the drive of the second motor 103 and the second belt 104, respectively. Since the threads on the second screws 101 are symmetrically and oppositely designed, as the second screws 101 rotate, the two second sliders 102 move simultaneously in opposite or opposite directions under the action of the second screws 101. As the second sliders 102 move, the fixing plate 3 can drive the two first screws 2 to move synchronously under the drive of the second sliders 102, thereby realizing that the multiple grippers 6 on the two first screws 2 move closer or further away from each other, thus realizing the operation of gripping or putting down the can.

[0036] like Figure 1 and Figure 2As shown, a rectangular hole is provided through the top center of the mounting plate 1. Two arc-shaped scrapers 11 are symmetrically arranged inside the rectangular hole. The scrapers 11 are located at the bottom of the mounting plate 1, and a second telescopic rod 12 is fixedly connected to the top of the scrapers 11. A fixed rod 13 is slidably inserted between the tops of the two second telescopic rods 12. A first fixed block is fixedly connected to both ends of the fixed rod 13, and the first fixed block is fixedly connected to the top of the mounting plate 1. A stop block 14 is fixedly sleeved in the middle of the fixed rod 13. A third spring 15 is sleeved on the fixed rod 13 at both ends of the stop block 14, and the two ends of the third spring 15 are fixedly connected to the stop block 14 and the corresponding second telescopic rod 12, respectively. The front and rear sides of the scraper 11 are provided with slots. A clamping block 16 is fixedly connected to the claw 6 at the corresponding position of the slot, and the clamping block 16 matches the slot. Multiple scraper strips 17 are fixedly connected in parallel to the bottom of the scraper 11, and the scraper strips 17 are made of rubber.

[0037] When the mounting plate 1 is positioned on top of the can, as it moves downwards, the scraper 11 contacts the top of the can. As the mounting plate 1 continues to move downwards, the scraper 11 gradually pushes against the second telescopic rod 12, causing the second telescopic rod 12 to gradually retract. When the can is completely positioned between the grippers 6 on the two first screws 2, the mounting plate 1 stops moving. At this point, the second motor 103 is activated, causing the multiple grippers 6 on the two first screws 2 to move closer together under the drive of the two second screws 101. During this process, the locking blocks 16 on the grippers 6 gradually engage with the slots, allowing the scraper 11 and the grippers 6 to connect together through the cooperation of the locking blocks 16 and the slots. When the can is gripped by the grippers... After clamping, the mounting plate 1 rises, lifting the can to the top of the conveyor belt. Then, the first motor 4 is started. At this time, the two pressure plates 91 approach each other under the action of the first screw 2 and the first slider 92. When the pressure plate 91 contacts the gripper 6, the gripper 6 pushes the scraper 11 along the direction of the limit rod 18 under the pressure of the pressure plate 91. During this process, the first spring 8 and the third spring 15 are gradually compressed. As the scraper 11 moves, the scraper strip 17 at the bottom of the scraper 11 and the gripper 6 can scrape against the top and sides of the can, thereby scraping away other garbage stuck to the surface of the can, thus ensuring that the surface of the can is relatively clean and preventing other garbage from being compressed together with the can.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A robot dedicated to an environmental device, comprising a mounting plate (1), characterized in that: The bottom of the mounting plate (1) is provided with a first screw rod (2) near the front and rear sides, the first screw rod (2) is rotatably sleeved with a fixed plate (3) near both ends, the fixed plate (3) is fixedly connected with the bottom of the mounting plate (1), one end of one of the first screw rods (2) is connected with a first motor (4), a transmission device (5) is arranged between the ends of the two first screw rods (2) away from the first motor (4), a plurality of clamping jaws (6) are sleeved on the first screw rod (2), two slide rods (7) are slidably arranged along the two sides of the plurality of clamping jaws (6), and a first spring (8) is sleeved on the part of the slide rod (7) between the adjacent two clamping jaws (6), the two slide rods (7) are located at the top and bottom of the first screw rod (2), respectively, and the two ends of the slide rod (7) are fixedly connected with the two fixed plates (3), the two first screw rods (2) are provided with a compression device (9) near both ends for extruding the bottle, and the top of the same end of the two first screw rods (2) is provided with a power assembly (10) for driving the two first screw rods (2) to approach each other; The transmission device (5) comprises a first telescopic rod (51), the first telescopic rod (51) is vertically arranged at the middle position of the two first screw rods (2), and a second spring (52) is sleeved on the first telescopic rod (51), the bottom of the first telescopic rod (51) is fixedly connected with the mounting plate (1) through an L-shaped plate (53), and a roller shaft (54) is arranged on the top of the first telescopic rod (51), and the roller shaft (54) is in transmission connection with the two first screw rods (2) through a same first belt (55); The compression device (9) comprises a pressing plate (91), a strip-shaped sliding hole is horizontally formed in the pressing plate (91) along the two sides thereof, two first sliding blocks (92) are slidably arranged in the sliding hole, and the two first sliding blocks (92) are threadedly sleeved on the two first screw rods (2), respectively, strip-shaped through holes are horizontally formed above and below the sliding hole, the two slide rods (7) located at the top of the first screw rod (2) are inserted into the through hole above the sliding hole, and the two slide rods (7) located at the bottom of the first screw rod (2) are inserted into the through hole below the sliding hole. The middle position of the top of the mounting plate (1) is provided with a rectangular hole, and two arc-shaped scrapers (11) are symmetrically arranged in the inner side of the rectangular hole, the scrapers (11) are located at the bottom of the mounting plate (1), and the top of the scraper (11) is fixedly connected with the second telescopic rod (12), the top of the two second telescopic rods (12) is slidably penetrated and connected with the same fixed rod (13), the both ends of the fixed rod (13) are fixedly connected with the first fixed block, and the first fixed block is fixedly connected with the top of the mounting plate (1), the middle part of the fixed rod (13) is fixedly sleeved with the stop block (14), the third spring (15) is sleeved on the fixed rod (13) at the both ends of the stop block (14), and the both ends of the third spring (15) are fixedly connected with the stop block (14) and the corresponding second telescopic rod (12), respectively, and the front and rear sides of the scraper (11) are provided with clamping grooves, and the clamping blocks (16) are fixedly connected on the clamping jaws (6) at the corresponding positions of the clamping grooves, and the clamping blocks (16) are matched with the clamping grooves; Before use, the device is installed on the existing mechanical arm, and the clamping jaw (6) is downward, when the pull-tab can is needed to be grabbed, the fixed plate (3) is moved to the top of the pull-tab can by the mechanical arm, and the direction of the fixed plate (3) is adjusted, so that the pull-tab can is located between the two first screw rods (2), then the fixed plate (3) is moved close to the top of the pull-tab can by the elongation of the mechanical arm, then the power assembly (10) is started, the two first screw rods (2) drive the plurality of clamping jaws (6) connected therewith to move close to the pull-tab can, in this process, as the two first screw rods (2) move close to each other, the first telescopic rod (51) is gradually elongated under the action of the second spring (52), so that the roller (54) can tension the first belt (55) under the action of the second spring (52), when the clamping jaws (6) on the two first screw rods (2) move close to each other, the pull-tab can can be clamped from the garbage conveyor belt under the cooperation of the plurality of clamping jaws (6), then the compression device (9) is started, when the compression device (9) contacts with the clamping jaw (6), the clamping jaw (6) starts to move to the middle of the mounting plate (1) along the slide rod (7), and the first spring (8) starts to contract under the extrusion of the clamping jaw (6), as the clamping jaw (6) continues to move, when the two compression devices (9) contact with the pull-tab can, the two compression devices (9) can cooperate with each other to realize the compression operation of the pull-tab can, thereby saving the storage space of the pull-tab can, and facilitating the subsequent transfer operation of the pull-tab can. When the mounting plate (1) is located at the top of the pull-tab can, as the mounting plate (1) moves downward, when the scraper (11) is in contact with the top of the pull-tab can, as the mounting plate (1) continues to move downward, the scraper (11) gradually pushes the second telescopic rod (12), so that the second telescopic rod (12) gradually shrinks, when the pull-tab can is completely placed between the clamping jaws (6) on the two first screw rods (2), the mounting plate (1) stops moving, at this time, the second motor (103) is started, so that the plurality of clamping jaws (6) on the two first screw rods (2) are driven by the two second screw rods (101) to move close to each other, and in this process, the clamping block (16) on the clamping jaw (6) can gradually be clamped into the clamping groove, so that the scraper (11) and the clamping jaw (6) can be connected together under the cooperation of the clamping block (16) and the clamping groove, when the pull-tab can is clamped by the clamping jaw (6), the mounting plate (1) is lifted, so that the pull-tab can is lifted to the top of the conveying belt, then the first motor (4) is started, at this time, the two pressing plates (91) move close to each other under the cooperation of the first screw rod (2) and the first sliding block (92), when the pressing plate (91) is in contact with the clamping jaw (6), the clamping jaw (6) pushes the scraper (11) to move along the direction of the limiting rod (18) under the extrusion of the pressing plate (91), in this process, the first spring (8) and the third spring (15) are gradually compressed, and as the scraper (11) moves, the scraper (11) bottom scraper (17) and the clamping jaw (6) can be scraped along the top and side of the pull-tab can, thereby removing other garbage adhering to the surface of the pull-tab can, so as to ensure that the surface of the pull-tab can is relatively clean, and avoid that other garbage is compressed together with the pull-tab can.

2. The mechanical hand for an environmental protection equipment according to claim 1, characterized in that: The power assembly (10) comprises a second screw rod (101), the second screw rod (101) is rotatably penetrated through the mounting plate (1) along the front-to-back direction of the mounting plate (1), the two second screw rods (101) are respectively located at the top of the two fixed plates (3) on the same side of the second screw rod (101), and the part of the mounting plate (1) opposite to the second screw rod (101) is provided with a strip-shaped connecting hole penetratingly formed in the vertical direction, the top of the fixed plate (3) is fixedly connected with a second sliding block (102), the second sliding block (102) is threadedly sleeved with the second screw rod (101) on the same side, and the second sliding block (102) is slidingly connected in the connecting hole; one end of one of the second screw rods (101) is connected with a second motor (103), and the two second screw rods (101) are connected with a second belt (104) between the ends away from the second motor (103).

3. The robot for use in an environmental protection apparatus according to claim 2, wherein: The threads on the first screw rod (2) and the second screw rod (101) are respectively symmetrical and opposite about the respective midpoint, the plurality of clamping jaws (6) located on the same first screw rod (2) are symmetrically distributed on the first screw rod (2), the two ends of the first spring (8) are respectively fixedly connected with the adjacent clamping jaws (6), and the clamping jaw (6) located in the middle is rotatably connected with the first screw rod (2), and the remaining clamping jaws (6) are not in contact with the surface of the first screw rod (2).

4. The mechanical arm special for environmental protection equipment according to claim 1, wherein the bottom of the scraper (11) is fixedly connected with a plurality of scraper strips (17) in parallel, and the scraper strips (17) are made of rubber.

5. The mechanical hand for an environmental protection equipment according to claim 1, characterized in that: Two limiting rods (18) are slidably inserted between the two pressing plates (91), the two limiting rods (18) are close to the front and rear sides of the mounting plate (1) respectively, the two ends of the limiting rod (18) are fixedly connected with second fixed blocks, and the second fixed blocks are fixedly connected with the bottom of the mounting plate (1).

6. The robot for use in an environmental protection device according to claim 1, wherein: The maximum elongation of the second spring (52) is greater than the sum of the maximum movement distances of the two first screw rods (2) in the horizontal direction.

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