Three-ring chain clamping device and clamping method

Abstract

The invention provides a three-ring chain clamping device which is used for picking and hanging a three-ring chain and comprises a base, a lifting table, a horizontal table, a horizontal connecting base and a clamping jaw frame. A rack is arranged on the base; the lifting table is vertically arranged in the rack in a sliding mode, and a longitudinal sliding rail is arranged on the lifting table; the horizontal table is arranged on a longitudinal sliding rail on the lifting table in a sliding mode, and a transverse sliding rail is arranged on the horizontal table; the horizontal connecting seat is slidably arranged in the transverse sliding rail; the clamping jaw frame is directly or indirectly arranged at the front end of the horizontal connecting base, an upper clamping jaw table and a lower clamping jaw table are arranged on the front portion of the clamping jaw frame, a lower clamping jaw is hinged to the front end of the lower clamping jaw table, an air cylinder frame is arranged on the upper clamping jaw table, and a clamping air cylinder is connected between the air cylinder frame and the rear end of the lower clamping jaw. The invention further provides a three-ring chain clamping method which is implemented by adopting the three-ring chain clamping device.

Description

Technical Field

[0001] The invention belongs to the field of mine car unhooking equipment, and particularly relates to a three-ring chain clamping device and a clamping method. Background Art

[0002] Generally, the three-ring chains used for connecting the same type of mine cars are of the same specification. However, due to different sources of mine cars in the mine field, the specifications of the three-ring chains used for connecting the mine cars are different, that is, they have different sizes and weights. The existing automatic unhooking mechanical equipment for three-ring chains generally can only adapt to one specification of three-ring chain and it is difficult to match three-ring chains of different sizes and weights, which causes great difficulties in the automatic unhooking of the three-ring chains between mine cars. The mine field either uniformly uses mine cars and three-ring chains of one specification, which has to abandon mine cars and three-ring chains of other specifications, resulting in increased costs, or abandons the use of automatic unhooking mechanical equipment for three-ring chains and uses manual unhooking of three-ring chains, which reduces the production efficiency. Summary of the Invention

[0003] In view of this, the purpose of the invention is to provide a three-ring chain clamping device and a clamping method to overcome or at least partially solve or alleviate the above problems.

[0004] The invention provides a three-ring chain clamping device, including: A base, on which a frame is provided; A lifting platform, which is vertically slidably arranged in the frame. A first hydraulic cylinder is vertically arranged between the frame and the lifting platform, and a longitudinal slide rail is arranged on the lifting platform; A horizontal platform, which is slidably arranged on the longitudinal slide rail on the lifting platform. A pushing and pulling mechanism is arranged between the horizontal platform and the lifting platform, and a transverse slide rail is arranged on the horizontal platform; A horizontal connecting seat, which is slidably arranged in the transverse slide rail. A second hydraulic cylinder is arranged between the horizontal connecting seat and the horizontal platform; Three jaw frames, which are directly or indirectly arranged at the front end of the horizontal connecting seat. Upper jaw platforms and lower jaw platforms are arranged at the front parts of the left and right jaw frames. A lower jaw is hinged at the front end of the lower jaw platform. A cylinder frame is arranged on the upper jaw platform, and a clamping cylinder is connected between the cylinder frame and the rear end of the lower jaw. A finger cylinder is arranged at the front part of the middle jaw frame, and a spreading claw is arranged at the front end of the finger cylinder.

[0005] The invention also has the following optional features.

[0006] Optionally, a clamping-in-place sensor is further included, which is vertically arranged on the left and right upper clamping jaw platforms, and its detection end extends downward from the upper clamping jaw platforms. A horizontal plate is vertically slidably arranged on the lower side of the upper clamping jaw platforms.

[0007] Optionally, a small-width movable platform is longitudinally slidably arranged on the horizontal connecting seat, a third hydraulic cylinder is longitudinally arranged between the horizontal connecting seat and the small-width movable platform, and the small-width movable platform is directly or indirectly connected to the clamping claw frame.

[0008] Optionally, a small-amplitude lifting seat is vertically slidably arranged on the small-amplitude moving platform, a fourth hydraulic cylinder is vertically arranged between the small-amplitude moving platform and the small-amplitude lifting seat, and the front end of the small-amplitude lifting seat is connected to the clamping claw frame.

[0009] Optionally, the clamping jaw frame is rotatably connected to the front end of the small-amplitude lifting seat, a swing traction mechanism is provided between one side of the clamping jaw frame and the small-amplitude lifting seat, and a tension spring is provided between the other side of the clamping jaw frame and the small-amplitude lifting seat.

[0010] Optionally, the swing traction mechanism comprises: A fifth hydraulic cylinder, the fifth hydraulic cylinder is transversely arranged on the small-width lifting seat, a steel cable is connected to the end of the fifth hydraulic cylinder, and a guide wheel is also arranged on the small-width lifting seat; A wire sleeve and a connector are arranged on the upper part of one side of the clamping claw frame. After the steel cable passes around the guide wheel, it passes through the wire sleeve and is connected to the connector.

[0011] The present invention also provides a three-link chain clamping method, which is implemented using the three-link chain clamping device described above, and includes the following steps: S001: The first hydraulic cylinder on the frame pushes the lifting platform vertically to the height of the three-link chain, the two clamping cylinders drive the two lower clamping claws to open, and the finger cylinder drives the open claws to be in a tightened state; S002: The push-pull mechanism on the lifting platform pushes the horizontal platform forward, so that the two lower clamps can clamp the three-ring chain. The second hydraulic cylinder in the horizontal platform pushes and pulls the horizontal connecting seat horizontally, so that the two lower clamps face the two ends of the three-ring chain, and at the same time, the two open grippers extend into the middle ring of the three-ring chain; S003: The two clamping cylinders extend downward, causing the two lower clamping claws to close upward to clamp the two ends of the three-ring chain. The finger cylinder drives the two opening claws to open and clamp the middle ring of the three-ring chain in reverse.

[0012] Beneficial effects of the present invention: The three-ring chain clamping device and clamping method of the present invention vertically push the lifting table to the approximate height where the three-ring chain of the preset size is located through the first hydraulic cylinder on the frame. The pushing and pulling mechanism on the lifting table pushes the horizontal table forward. First, the clamping jaws enter the approximate clamping range where different specifications of three-ring chains can be clamped. Then, according to the size of different specific three-ring chains, the second hydraulic cylinder in the horizontal table horizontally pushes and pulls the horizontal connecting seat to align the two lower clamping jaws with both ends of the specific three-ring chain. The two clamping cylinders drive the two lower clamping jaws to close upward to clamp the specific three-ring chains of different sizes and weights. The three-ring chain clamping device and clamping method of the present invention can automatically pick up and hang different sizes and weights of three-ring chains, without the need to replace other specifications of mine cars and three-ring chains, saving the cost of the mine and improving the production efficiency of the mine. Brief Description of the Drawings

[0013] Figure 1 is the overall structure diagram of the three-ring chain clamping device of the present invention; Figure 2 is the structure diagram of the lifting table in the three-ring chain clamping device of the present invention; Figure 3 is the structure diagram of the clamping jaw frame in the three-ring chain clamping device of the present invention.

[0014] In the above figures: 1. Base; 2. Frame; 3. Lifting table; 4. First hydraulic cylinder; 5. Longitudinal slide rail; 6. Horizontal table; 7. Transverse slide rail; 8. Horizontal connecting seat; 9. Second hydraulic cylinder; 10. Clamping jaw frame; 11. Upper clamping jaw table; 12. Lower clamping jaw table; 13. Lower clamping jaw; 14. Cylinder frame; 15. Clamping cylinder; 16. Clamping in place sensor; 17. Transverse plate; 18. Small displacement table; 19. Third hydraulic cylinder; 20. Small lifting seat; 21. Fourth hydraulic cylinder; 22. Pulling spring; 23. Fifth hydraulic cylinder; 24. Guide wheel; 25. Wire sleeve; 26. Connector; 27. First guide rod; 28. First guide sleeve; 29. Second guide rod; 30. Second guide sleeve; 31. Third guide rod; 32. Third guide sleeve; 33. Three-ring chain; 34. Finger cylinder; 35. Spreading claw.

[0015] The present invention will be further described in detail below with reference to the drawings and embodiments. Detailed Embodiments

[0016] Embodiment 1 Reference Figure 1 , Figure 2 and Figure 3, an embodiment of the present invention provides a three - ring chain clamping device for detaching and attaching a three - ring chain 33, including: a base 1, a lifting platform 3, a horizontal platform 6, a horizontal connecting seat 8, and three jaw frames 10; a frame 2 is arranged on the base 1; the lifting platform 3 is vertically slidably arranged in the frame 2, a first hydraulic cylinder 4 is vertically arranged between the frame 2 and the lifting platform 3, and a longitudinal slide rail 5 is arranged on the lifting platform 3; the horizontal platform 6 is slidably arranged on the longitudinal slide rail 5 on the lifting platform 3, a push - pull mechanism is arranged between the horizontal platform 6 and the lifting platform 3, and a transverse slide rail 7 is arranged on the horizontal platform 6; the horizontal connecting seat 8 is slidably arranged in the transverse slide rail 7, and a second hydraulic cylinder 9 is arranged between the horizontal connecting seat 8 and the horizontal platform 6; the left and right two jaw frames 10 are directly or indirectly arranged at the front end of the horizontal connecting seat 8, an upper jaw platform 11 and a lower jaw platform 12 are arranged at the front part of the jaw frame 10, a lower jaw 13 is hinged at the front end of the lower jaw platform 12, a cylinder frame 14 is arranged on the upper jaw platform 11, and a clamping cylinder 15 is connected between the cylinder frame 14 and the rear end of the lower jaw 13; a finger cylinder 34 is arranged at the front part of the middle jaw frame 10, and a spreading claw 35 is arranged at the front end of the finger cylinder 34.

[0017] During operation, the first hydraulic cylinder 4 on the frame 2 vertically pushes the lifting platform 3 to the height where the three - ring chain 33 is located, and the two clamping cylinders 15 drive the two lower jaws 13 to open; the push - pull mechanism on the lifting platform 3 pushes the horizontal platform 6 forward along the longitudinal and transverse slide rails 5, so that the two lower jaws 13 can clamp the three - ring chain 33, and the spreading claw 35 extends into the middle ring of the three - ring chain 33. The second hydraulic cylinder 9 in the horizontal platform 6 pushes and pulls the horizontal connecting seat 8 to move horizontally along the transverse slide rail 7, horizontally adjusting the positions of the two lower jaws 13 so that the two lower jaws 13 are facing the two ends of the three - ring chain 33; the two clamping cylinders 15 extend downward, driving the two lower jaws 13 to close upward to clamp the two ends of the three - ring chain 33, the finger cylinder 34 drives the two spreading claws 35 to open, and corresponding notches for the middle ring are arranged on the two spreading claws 35 to reversely clamp the middle ring of the three - ring chain 33.

[0018] Embodiment 2 Reference Figure 2 and Figure 3 , on the basis of Embodiment 1, it further includes a clamping - in - place sensor 16. The clamping - in - place sensor 16 is vertically arranged on the left and right two upper jaw platforms 11, and its detection end extends downward out of the upper jaw platform 11. A transverse plate 17 is vertically slidably arranged on the lower side of the upper jaw platform 11.

[0019] A first guide rod 27 is vertically arranged on the upper side of the horizontal plate 13. First guide sleeves 28 are arranged on the left and right upper jaw platforms 11, and the first guide sleeves 28 are matched with the first guide rod 27. When the clamping cylinder 15 drives the lower jaw 13 to clamp the three-ring chain 33, the lower jaw 13 drives the three-ring chain 33 to push the horizontal plate 17 to move upward under the guidance of the first guide rod 27 and the first guide sleeve 28 until the horizontal plate 17 triggers the clamping-in-place sensor 16.

[0020] Embodiment 3 Reference Figure 2 , on the basis of Embodiment 1, a small moving platform 18 is longitudinally slidably arranged on the horizontal connecting seat 8. A third hydraulic cylinder 19 is longitudinally arranged between the horizontal connecting seat 8 and the small moving platform 18, and the small moving platform 18 is directly or indirectly connected to the jaw holder 10.

[0021] When the pushing and pulling mechanism drives the horizontal platform 6 to move to the position of the three-ring chain 33, the small moving platform 18 can also be controlled to move slightly back and forth relative to the horizontal connecting seat 8 through the third hydraulic cylinder 19 to realize longitudinal position adjustment for the picking and hanging of three-ring chains of different sizes. A pair of second guide rods 29 are longitudinally arranged on the horizontal connecting seat 8, and a pair of second guide sleeves 30 are longitudinally arranged at the lower end of the small moving platform 18. The two second guide sleeves 30 are respectively matched with the two second guide rods 29, and the two second guide rods 29 can guide the small moving platform 18 longitudinally.

[0022] Embodiment 4 Reference Figure 2 , on the basis of Embodiment 3, a small lifting seat 20 is vertically slidably arranged on the small moving platform 18. A fourth hydraulic cylinder 21 is vertically arranged between the small moving platform 18 and the small lifting seat 20, and the front end of the small lifting seat 20 is connected to the jaw holder 10.

[0023] When the first hydraulic cylinder 4 drives the lifting platform 3 to move to the height where the three-ring chain 33 is located, the small lifting seat 20 can also be driven to make a small height adjustment through the fourth hydraulic cylinder 21 so that the jaw holder 10 at the front end of the small lifting seat 20 is aligned with the three-ring chain 33; a plurality of third guide rods 31 are vertically arranged in the small moving platform 18, and a plurality of third guide sleeves 32 are vertically arranged at the rear end of the small lifting seat 20. Each third guide sleeve 32 is respectively matched with a third guide rod 31 to guide the lifting platform 4 vertically.

[0024] Embodiment 5 Reference Figure 2 and Figure 3 , on the basis of Embodiment 4, the jaw holder 10 is rotatably connected to the front end of the small lifting seat 20. A swing traction mechanism is arranged between one side of the jaw holder 10 and the small lifting seat 20, and a tension spring 22 is arranged between the other side of the jaw holder 10 and the small lifting seat 20.

[0025] If the two ends of the three - ring chain 33 have different inclination degrees due to different weights, the swing traction mechanism can be used to control the gripper frame 10 to swing a certain angle relative to the small - amplitude lifting seat 20, which is convenient for the lower gripper 13 to grab the three - ring chain 33. After the grabbing is completed, the swing traction mechanism releases the gripper frame 10, and the gripper frame 10 returns to its original position under the traction of the tension spring 22.

[0026] Embodiment 6 Reference Figure 2 and Figure 3 Based on Embodiment 5, the swing traction mechanism includes: a fifth hydraulic cylinder 23, a wire sleeve 25, and a connector 26; the fifth hydraulic cylinder 23 is horizontally arranged on the small - amplitude lifting seat 20, a steel cable is connected to the end of the fifth hydraulic cylinder 23, and a guide wheel 24 is also arranged on the small - amplitude lifting seat 10; the wire sleeve 25 and the connector 26 are arranged on the upper part of one side of the gripper frame 10, and the steel cable passes around the guide wheel 24, then passes through the wire sleeve 25 and is connected to the connector 26.

[0027] In the initial state, the fifth hydraulic cylinder 23 pre - pulls the steel cable to move a certain distance, so that the pulling force of the steel cable pulling the connector 26 after passing around the guide wheel 24 is balanced with the pulling force of the tension spring 22 pulling the gripper frame 10. At this time, the gripper frame 10 remains upright. When it is necessary for the gripper frame 10 to swing towards the side where the guide wheel 24 is located, the fifth hydraulic cylinder 23 continuously retracts, and the connector 26 is pulled by the steel cable to swing towards the side of the guide wheel 24, driving the entire gripper frame 10 to swing towards the side of the guide wheel 24. When it is necessary for the gripper frame 10 to swing towards the side where the tension spring 22 is located, the fifth hydraulic cylinder 23 extends a certain distance to release a section of the steel cable, and the tension spring 22 then pulls the entire gripper frame 10 to swing towards the side of the tension spring 22.

[0028] Embodiment 7 The present invention also proposes a method for gripping a three - ring chain, which is implemented by using the above - mentioned three - ring chain gripping device, and includes the following steps: S001: The first hydraulic cylinder 4 on the frame 2 vertically pushes the lifting platform 3 to the height where the three - ring chain 33 is located, the two clamping cylinders 15 drive the two lower grippers 13 to open, and the finger cylinder 34 drives the spreading claws 35 to be in a tightened state; S002: The push - pull mechanism on the lifting platform 3 pushes the horizontal platform 6 forward, so that the three - ring chain 33 enters the gripping range of the lower grippers 13. The second hydraulic cylinder 9 in the horizontal platform 6 horizontally pushes and pulls the horizontal connecting seat 8, so that the two lower grippers 13 are facing the two ends of the three - ring chain 33, and at the same time, the two spreading claws 35 extend into the middle ring of the three - ring chain 33; S003: The two clamping cylinders 15 extend downward, driving the two lower grippers 13 to close upward to clamp the two ends of the three - ring chain 33, and the finger cylinder 34 drives the two spreading claws 35 to spread to clamp the middle ring of the three - ring chain 33 in the reverse direction.

[0029] In step S001, if the three-ring chain 33 has different sizes, resulting in a difference between the height of the current three-ring chain 33 and the preset height, the height of the small lifting seat 20 is adjusted by the fourth hydraulic cylinder 21 to make the height of the jaw holder 10 equal to that of the three-ring chain 33; if the two ends of the three-ring chain 33 are skewed, the swing traction mechanism controls the jaw holder 10 to rotate a certain angle relative to the small lifting seat 20, so that the upper jaw platform 11 and the lower jaw platform 12 on the jaw holder 10 swing by a certain angle, enabling the lower jaw 13 to grip both ends of the three-ring chain 33; in step S002, if the three-ring chain 33 has different sizes, resulting in a difference between the front-back position of the current three-ring chain 33 and the preset position, the small moving platform 18 can also be controlled by the third hydraulic cylinder 19 to move slightly back and forth relative to the horizontal connecting seat 8, so as to realize the longitudinal position adjustment of the picking and hanging of the three-ring chain 33; in step S003, the clamping cylinder 15 drives the lower jaw 13 to clamp the three-ring chain 33 upward, causing the three-ring chain 33 to push the transverse plate 17 on the lower side of the upper jaw platform 11 to move upward, and the transverse plate 17 triggers the clamping-in-place sensor 16. At this time, the lower jaw 13 completely grabs both end rings of the three-ring chain 33.

[0030] As described above, the above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims. The components and structures not described in detail in this embodiment are well-known components and common structures or common means in this industry, and will not be described one by one here.

Claims

1. A three-ring chain clamping device for detaching and attaching a three-ring chain (33), characterized in that, Comprising: A base (1) with a frame (2) disposed thereon; A lifting platform (3) vertically slidably disposed in the frame (2). A first hydraulic cylinder (4) is vertically disposed between the frame (2) and the lifting platform (3). A longitudinal slide rail (5) is disposed on the lifting platform (3); A horizontal platform (6) slidably disposed on the longitudinal slide rail (5) on the lifting platform (3). A push-pull mechanism is disposed between the horizontal platform (6) and the lifting platform (3). A transverse slide rail (7) is disposed on the horizontal platform (6); A horizontal connecting seat (8) slidably disposed in the transverse slide rail (7). A second hydraulic cylinder (9) is disposed between the horizontal connecting seat (8) and the horizontal platform (6); Three jaw frames (10) directly or indirectly disposed at the front end of the horizontal connecting seat (8). Upper jaw platforms (11) and lower jaw platforms (12) are disposed at the front parts of the left and right jaw frames (10). A lower jaw (13) is hinged to the front end of the lower jaw platform (12). A cylinder frame (14) is disposed on the upper jaw platform (11). A clamping cylinder (15) is connected between the cylinder frame (14) and the rear end of the lower jaw (13). A finger cylinder (34) is disposed at the front part of the middle jaw frame (10). A spreading claw (35) is disposed at the front end of the finger cylinder (34).

2. The three-ring chain clamping device according to claim 1, characterized in that, Further comprising a clamping-in-place sensor (16) vertically disposed on the left and right upper jaw platforms (11), with its detection end extending downward out of the upper jaw platform (11). A transverse plate (17) is vertically slidably disposed on the lower side of the upper jaw platform (11).

3. The three-ring chain clamping device according to claim 1, characterized in that A small movement platform (18) is longitudinally slidably disposed on the horizontal connecting seat (8). A third hydraulic cylinder (19) is longitudinally disposed between the horizontal connecting seat (8) and the small movement platform (18). The small movement platform (18) is directly or indirectly connected to the jaw frame (10).

4. The three-ring chain clamping device according to claim 3, wherein A small lifting seat (20) is vertically slidably disposed on the small movement platform (18). A fourth hydraulic cylinder (21) is vertically disposed between the small movement platform (18) and the small lifting seat (20). The front end of the small lifting seat (20) is connected to the jaw frame (10).

5. The three-ring chain clamping device according to claim 4, wherein, The jaw frame (10) is rotatably connected to the front end of the small lifting seat (20). A swing traction mechanism is disposed between one side of the jaw frame (10) and the small lifting seat (20). A tension spring (22) is disposed between the other side of the jaw frame (10) and the small lifting seat (20).

6. The three-ring chain clamping device according to claim 5, wherein, The swing traction mechanism includes: A fifth hydraulic cylinder (23) horizontally disposed on the small lifting seat (20). A steel cable is connected to the end of the fifth hydraulic cylinder (23). A guide wheel (24) is also disposed on the small lifting seat (10); A wire sleeve (25) and a connector (26), the wire sleeve (25) and the connector (26) are arranged at the upper part of one side of the jaw holder (10), and the steel cable passes through the wire sleeve (25) after bypassing the guide wheel (24) and is connected to the connector (26).

7. A method for gripping a three-ring chain, which is implemented by using the three-ring chain gripping device described in any one of claims 1 to 6, characterized in that, Including the following steps: S001: The first hydraulic cylinder (4) on the frame (2) vertically pushes the lifting platform (3) to the height where the three-ring chain (33) is located, the two clamping cylinders (15) drive the two lower jaws (13) to open, and the finger cylinder (34) drives the spreading claws (35) to be in a tightened state; S002: The pushing and pulling mechanism on the lifting platform (3) pushes the horizontal platform (6) forward so that the two lower jaws (13) can grab the three-ring chain (33). The second hydraulic cylinder (9) in the horizontal platform (6) horizontally pushes and pulls the horizontal connecting seat (8) so that the two lower jaws (13) are facing the two ends of the three-ring chain (33), and at the same time, the two spreading claws (35) extend into the middle ring of the three-ring chain (33); S003: The two clamping cylinders (15) extend downward, driving the two lower jaws (13) to close upward to clamp the two ends of the three-ring chain (33), and the finger cylinder (34) drives the two spreading claws (35) to open to reversely clamp the middle ring of the three-ring chain (33).

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