Anti-lock cold slag plate chain hoist

Abstract

The present invention discloses an anti-lock cold slag plate chain hoist, which relates to the field of hoist anti-lock, and comprises a bearing base body, a sealing box is fixedly connected to the outer wall of the bearing base body, a sealing assembly is movably connected to the top of the sealing box, and the sealing assembly comprises a sealing cover plate and a trapezoidal boss, the trapezoidal boss is fixedly mounted on the upper surface of the sealing cover plate, and a filling assembly is movably mounted on the inner wall of the trapezoidal boss. The present invention utilizes a trapezoidal boss arranged on the top of the sealing box, and separate filling assemblies are arranged on both sides of the trapezoidal boss to avoid the probability of dust entering the interior of the bearing base body, thereby preventing the bearing from locking. The filling assembly is mainly in contact with the chain through a rubber filling sheet, and the whole is in a deformable and stable state. It is used in conjunction with the triangular tip contact on the surface of the rubber filling sheet to fill the gap inside the chain, thereby further improving the sealing effect.

Description

Technical Field

[0001] The invention relates to the technical field of anti-locking of hoists, in particular to an anti-locking cold slag plate chain hoist. Background Art

[0002] The elevator is a large mechanical equipment that transports by changing potential energy, and the plate chain elevator is a vertical lifting equipment.

[0003] In the prior art, such as the "cold slag treatment elevator device" of Chinese application number CN202120892407.5, it includes an elevator case, a motor, a motor bracket, an auxiliary support frame, a No. 3 fastening connection sleeve, an auxiliary connecting arm, a fixed support arm, and a fastening connection groove. The left side of the elevator case is connected to the feed hopper, and the upper part of the elevator case is connected to two bucket protective shells. The top of the bucket protective shell is connected to the protective shell, and the right side of the protective shell is connected to the discharge port. The left side of the protective shell is connected to the motor bracket, and the right side of the motor bracket is connected to the bucket protective shell. The upper part of the motor bracket is connected to the motor, and the front and rear sides of the motor are connected and symmetrically arranged. The lower part is connected to the motor bracket, and the right side of the motor bracket has a fastening connection groove, the inner side of the fastening connection groove is connected to the protective shell, and the lower part is connected to the bucket protective shell. The motor bracket has auxiliary connecting arms on the front and rear sides, and the auxiliary connecting arms are symmetrically arranged.

[0004] However, in the prior art, the lower part of the 75KW plate chain elevator for cold slag of the rotary kiln adopts rolling bearings, which are easy to get stuck due to dust ingress. Therefore, in actual use, a sealing box is usually used to protect the bearings. However, since the plate chain elevator requires multiple structures to work together and is in an active state as a whole, there will be a certain gap at the connection between the traditional sealing box and the elevator, resulting in a relatively limited overall sealing effect, and dust ingress is still prone to occur. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-locking cold slag plate chain elevator to solve the problem that there is a certain gap at the connection between the traditional sealing box and the elevator proposed in the above background technology, resulting in a relatively limited overall sealing effect and the problem of dust entering easily.

[0006] To achieve the above object, the present invention provides the following technical solution: an anti-lock cold slag plate chain hoist, comprising a bearing base body, a sealing box is fixedly connected to the outer wall of the bearing base body, a sealing assembly is movably connected to the top of the sealing box, the sealing assembly comprises a sealing cover plate and a trapezoidal boss, the trapezoidal boss is fixedly mounted on the upper surface of the sealing cover plate, a filling assembly is movably mounted on the inner wall of the trapezoidal boss, and closing assemblies are rotatably connected to both sides of the trapezoidal boss;

[0007] The filling assembly includes a rubber filling piece, a positioning rod, a first support rod and a second support rod, the positioning rod, the first support rod and the second support rod are arranged on the inner side of the rubber filling piece in a triangle symmetrical in the upper and lower directions, and the positioning rod is located at both ends of the rubber filling piece, and the intersections of the positioning rod, the first support rod and the second support rod with the rubber filling piece are rotatably installed with docking ends, both ends of the positioning rod are fixedly installed with positioning ends, a vertical rod is fixedly installed at the center of the positioning rod, and one end of the vertical rod is movably connected with a connecting end, and the outer walls of the first support rod and the second support rod are rotatably connected with limiting rings, and a double-headed spring telescopic rod is fixedly connected between the two diagonal limiting rings;

[0008] A T-shaped accommodating cavity is provided inside the connecting end, a guide rod is fixedly installed on the inner wall of the T-shaped accommodating cavity, a docking rod is slidably connected to the outer wall of the guide rod, the other ends of the two docking rods are respectively fixedly connected to the outer walls of the first support rod and the second support rod, one end of the docking rod is fixedly connected to a tension spring, the other end of the tension spring is fixedly connected to the inner wall of the T-shaped accommodating cavity, the tension spring is sleeved on the outer wall of the guide rod, and the edge of the docking rod overlaps the inner wall of the T-shaped accommodating cavity.

[0009] Preferably, the positioning end is fixedly installed inside the trapezoidal boss, a limiting plate is fixedly installed inside the trapezoidal boss, a limiting slot is opened on one side of the limiting plate, and one end of the first support rod and the second support rod are slidably connected to the slot wall of the limiting slot.

[0010] Preferably, a triangular tip is fixedly mounted on the outer wall of the rubber filling piece, the rubber filling piece is located on both sides of the trapezoidal boss, and a positioning slot is provided at the junction of the trapezoidal boss and the limiting plate.

[0011] Preferably, the bottom of the sealing cover plate is buckled on the top of the sealing box, an arc-shaped protrusion is fixedly mounted on the top of the trapezoidal boss, and the closing component is rotatably mounted on the top of the arc-shaped protrusion.

[0012] Preferably, the closing assembly includes a positioning plate and an inclined baffle, the positioning plate is fixedly mounted on both sides of the inclined baffle, a contact plate is fixedly mounted on one end of the inclined baffle, and the angle between the inclined baffle and the contact plate is set to one hundred and thirty-five degrees.

[0013] Preferably, an extension plate is fixedly mounted on one side of the positioning plate, and a reinforcement plate is fixedly connected to the other end of the extension plate.

[0014] Preferably, a limit rotating rod is fixedly connected between the reinforcing plate and the positioning plate, the limit rotating rod is located at a corner of the positioning plate, and the limit rotating rod is rotatably installed inside the arc-shaped protrusion.

[0015] Preferably, an anti-dropping block is movably installed inside the inclined baffle, and a dustproof cloth is fixedly connected to one side of the anti-dropping block.

[0016] Preferably, the other end of the dustproof cloth is fixedly connected to a limiting roller rod, and the dustproof cloth is wound on the outer wall of the limiting roller rod.

[0017] Preferably, the limiting roller rod is rotatably mounted inside the trapezoidal boss, and the dustproof cloth passes through the trapezoidal boss.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, a trapezoidal boss is arranged on the top of the sealing box, and separate filling components are arranged on both sides of the inside of the trapezoidal boss. The filling component is mainly used to fill the gap between the chain and the sealing box, so as to avoid the probability of dust entering the inside of the bearing base body, thereby preventing the bearing from locking. The filling component is mainly in contact with the chain through a rubber filling sheet, and the shape of the rubber filling sheet is supported by the positioning rod, the first support rod and the second support rod. The whole is in a deformable and stable state, thereby maintaining a close contact with the chain. When used in conjunction with the triangular tip contact on the surface of the rubber filling sheet, it can fill the gap inside the chain and prevent dust from passing through the gap inside the chain into the sealing box, thereby further improving the sealing effect.

[0020] 2. In the present invention, when the closed component elevator stops operating, the chain near the sealing box can be protected. The contact plate can be covered to one side of the chain by rotating the positioning plate. At this time, the dustproof cloth will also be synchronously pulled out from the trapezoidal boss to form a covering structure to protect the chain, thereby reducing the probability of the chain in the area coming into contact with external dust, thereby achieving the purpose of expanding the protection range. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the anti-lock cold slag plate chain hoist of the present invention;

[0022] Figure 2 It is a schematic diagram of a half-section structure of a sealing box of the anti-lock cold slag plate chain hoist of the present invention;

[0023] Figure 3 It is a schematic diagram of a half-section structure of a sealing box and a sealing assembly of an anti-lock cold slag plate chain hoist of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the filling assembly of the anti-lock cold slag plate chain hoist of the present invention;

[0025] Figure 5It is a schematic diagram of the connection structure of the positioning rod, the first support rod and the second support rod of the anti-lock cold slag plate chain hoist of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal half-section structure of the connecting end of the anti-lock cold slag plate chain hoist of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the closing component of the anti-lock cold slag plate chain hoist of the present invention;

[0028] Figure 8 For the present invention Figure 3 Schematic diagram of the enlarged structure of part A.

[0029] In the figure: 1, sealing box; 2, sealing assembly; 3, closing assembly; 4, bearing base body; 21, sealing cover plate; 22, trapezoidal boss; 23, arc-shaped convex block; 24, positioning slot; 25, filling assembly; 251, rubber filling sheet; 252, triangular tip contact; 253, limit plate; 254, limit slide groove; 255, docking end; 256, positioning end; 257, positioning rod; 258, vertical rod; 259, engagement Connecting end; 260, first supporting rod; 261, second supporting rod; 262, limiting ring; 263, double-headed spring telescopic rod; 264, T-shaped accommodating cavity; 265, guiding rod; 266, docking rod; 267, tension spring; 31, positioning plate; 32, inclined baffle; 33, contact plate; 34, dustproof cloth; 35, limiting rotating rod; 36, extension plate; 37, reinforcement plate; 38, limiting roller rod; 39, anti-dropping block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0031] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown: an anti-lock cold slag plate chain hoist, including a bearing base body 4, a sealing box 1 is fixedly connected to the outer wall of the bearing base body 4, a sealing assembly 2 is movably connected to the top of the sealing box 1, the sealing assembly 2 includes a sealing cover plate 21 and a trapezoidal boss 22, the trapezoidal boss 22 is fixedly installed on the upper surface of the sealing cover plate 21, a filling assembly 25 is movably installed on the inner wall of the trapezoidal boss 22, and both sides of the trapezoidal boss 22 are rotatably connected with a closing assembly 3, the filling assembly 25 includes a rubber filling piece 251, a positioning rod 257, a first support rod 260 and a second support rod 261, the positioning rod 257, the first support rod 260 and the second support rod 261 are arranged on the inner side of the rubber filling piece 251 in a triangle symmetrical up and down, the positioning rod 257 is located at both ends of the rubber filling piece 251, and the intersection of the positioning rod 257, the first support rod 260 and the second support rod 261 with the rubber filling piece 251 is rotatably installed with a docking end 255, and both ends of the positioning rod 257 are fixedly installed There is a positioning end 256, a vertical rod 258 is fixedly installed at the center of the positioning rod 257, one end of the vertical rod 258 is movably connected to a connecting end 259, the outer walls of the first support rod 260 and the second support rod 261 are rotatably connected to a limiting ring 262, a double-headed spring telescopic rod 263 is fixedly connected between the two diagonal limiting rings 262, a T-shaped accommodating cavity 264 is opened inside the connecting end 259, and a guide rod 265 is fixedly installed on the inner wall of the T-shaped accommodating cavity 264. A docking rod 266 is slidably connected to the outer wall of the guide rod 265, and the other ends of the two docking rods 266 are respectively fixedly connected to the outer walls of the first support rod 260 and the second support rod 261, one end of the docking rod 266 is fixedly connected to a tension spring 267, and the other end of the tension spring 267 is fixedly connected to the inner wall of the T-shaped accommodating cavity 264. The tension spring 267 is sleeved on the outer wall of the guide rod 265, and the edge of the docking rod 266 overlaps the inner wall of the T-shaped accommodating cavity 264.

[0032] In this embodiment, the bearing base body 4 is installed inside the sealing box 1 and is used to dock the bearing of the hoist. The sealing box 1 arranged outside the bearing base body 4 is mainly used to protect the bearing base body 4 to prevent dust from entering the bearing base body 4. The sealing component 2 is buckled on the top of the sealing box 1 through the sealing cover plate 21. At the same time, the filling component 25 is installed on the inner wall of the trapezoidal boss 22. The filling component 25 is located on both sides of the opening of the trapezoidal boss 22 and is used to fill the gap between the chain and the trapezoidal boss 22.

[0033] During use, the chain passes through the trapezoidal boss 22 and the sealing cover plate 21 and enters the interior of the sealing box 1. During the chain transmission process, it will always maintain contact with the filling component 25. The shape of the entire rubber filling piece 251 is determined by the symmetrically arranged positioning rod 257, the first support rod 260 and the second support rod 261 to ensure that there is enough contact area with the chain for sealing. At the same time, the entire rubber filling piece 251 is in contact with the positioning rod 257, the first support rod 260 and the second support rod 261 through the docking end 255. Therefore, the filling component 25 is not only in a rotatable state, but also can always maintain a close contact state with the chain during the continuous transmission of the chain.

[0034] The symmetrically arranged positioning rod 257, the first support rod 260 and the second support rod 261 are formed into two triangles, thereby determining the shape of the two ends of the rubber filling piece 251. A double-headed spring telescopic rod 263 is connected between the two first support rods 260 and the two second support rods 261, and a limiting ring 262 is provided at the intersection of the double-headed spring telescopic rod 263 and the first support rod 260 and the second support rod 261, so as to provide sufficient activity space for the rotation of the double-headed spring telescopic rod 263.

[0035] During the chain transmission process, the protrusions on the chain surface will push the first support rod 260 to move, thereby compressing the double-headed spring telescopic rod 263. When the protrusions of the chain leave the first support rod 260, the rebound of the double-headed spring telescopic rod 263 will restore the original shape of the rubber filling piece 251, so that the rubber filling piece 251 at the first support rod 260 contacts the chain, so that the entire filling assembly 25 can adapt to the uneven shape of the chain surface;

[0036] The positioning rod 257 is connected to the connecting end 259 through the vertical rod 258, and the first support rod 260 and the second support rod 261 are respectively connected to the connecting end 259 through the docking rod 266. Therefore, the overall structure is a triangular structure with good stability. When the first support rod 260 is squeezed by the chain, the first support rod 260 will push the docking rod 266 into the T-shaped accommodating cavity 264. When the raised part of the chain leaves the first support rod 260, the rebound of the tension spring 267 will pop out the docking rod 266 to reset the first support rod 260. During the whole process, the guide rod 265 will determine the moving direction of the docking rod 266 to maintain the stability of the entire structure. Embodiment 2

[0037] Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the filling assembly 25 includes a rubber filling piece 251, a positioning rod 257, a first support rod 260 and a second support rod 261. The positioning rod 257, the first support rod 260 and the second support rod 261 are arranged on the inner side of the rubber filling piece 251 in a vertically symmetrical triangle. The positioning rod 257 is located at both ends of the rubber filling piece 251. The intersections of the positioning rod 257, the first support rod 260, the second support rod 261 and the rubber filling piece 251 are rotatably installed with a docking end 255. Both ends of the positioning rod 257 are fixedly installed with a positioning end 256. A vertical rod 258 is fixedly installed at the center of the positioning rod 257. One end of the vertical rod 258 is movably connected with a connecting end 259. A limiting ring 262 is rotatably connected to the outer wall of a support rod 260 and a second support rod 261, and a double-headed spring telescopic rod 263 is fixedly connected between the two diagonal limiting rings 262. The positioning end 256 is fixedly installed inside the trapezoidal boss 22, and a limiting plate 253 is fixedly installed inside the trapezoidal boss 22. A limiting slide groove 254 is provided on one side of the limiting plate 253. One end of the first support rod 260 and the second support rod 261 is slidably connected to the groove wall of the limiting slide groove 254. A triangular tip contact 252 is fixedly installed on the outer wall of the rubber filling piece 251. The rubber filling piece 251 is located on both sides of the trapezoidal boss 22, and a positioning slot 24 is provided at the junction of the trapezoidal boss 22 and the limiting plate 253.

[0038] In this embodiment, the shapes of the two ends of the rubber filling piece 251 are determined by the positioning rod 257, the first support rod 260 and the second support rod 261, wherein the position of the positioning rod 257 is fixed and will not change, and the first support rod 260 and the second support rod 261 are both in a movable state to adapt to the uneven shape of the chain;

[0039] The triangular tip contact 252 is located on the surface of the rubber filling piece 251 and directly contacts the chain, filling the gap on the surface of the chain to improve the sealing effect. The positioning rod 257 is located at both ends of the rubber filling piece 251 and connected to the trapezoidal boss 22 through the positioning end 256 to determine the position of the rubber filling piece 251 and prevent the filling component 25 from being displaced under the drive of the chain.

[0040] Both ends of the first support rod 260 and the second support rod 261 are connected to the limit plate 253. The limit plate 253 is located on the positioning slot 24 on the inner wall of the trapezoidal boss 22, and a limit slot 254 is provided on one side thereof to determine the moving route of the first support rod 260, thereby avoiding the first support rod 260 from being misaligned when the chain pushes the first support rod 260, thereby improving the overall structural stability. Embodiment 3

[0041] according to Figure 1 , Figure 2 and Figure 3As shown, the top of the sealing box 1 is movably connected with a sealing component 2, and the sealing component 2 includes a sealing cover plate 21 and a trapezoidal boss 22. The trapezoidal boss 22 is fixedly installed on the upper surface of the sealing cover plate 21, and a filling component 25 is movably installed on the inner wall of the trapezoidal boss 22. Both sides of the trapezoidal boss 22 are rotatably connected with closing components 3. The bottom of the sealing cover plate 21 is buckled on the top of the sealing box 1, and an arc-shaped protrusion 23 is fixedly installed on the top of the trapezoidal boss 22. The closing component 3 is rotatably installed on the top of the arc-shaped protrusion 23.

[0042] In this embodiment, the sealing cover plate 21 of the sealing component 2 is buckled on the top of the sealing box 1 to complete the closure of the top space of the sealing box 1. The chain passes through the trapezoidal boss 22 and the sealing cover plate 21 to enter the interior of the sealing box 1. The filling component 25 is located at the connection between the chain and the trapezoidal boss 22 to fill the gap between the chain and the trapezoidal boss 22. The closing component 3 is mainly used to protect the trapezoidal boss 22 and the chain when the elevator stops operating. Embodiment 4

[0043] according to Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the closing assembly 3 includes a positioning plate 31 and an inclined baffle plate 32, the positioning plate 31 is fixedly mounted on both sides of the inclined baffle plate 32, one end of the inclined baffle plate 32 is fixedly mounted with a contact plate 33, the angle between the inclined baffle plate 32 and the contact plate 33 is set to one hundred and thirty-five degrees, an extension plate 36 is fixedly mounted on one side of the positioning plate 31, the other end of the extension plate 36 is fixedly connected with a reinforcement plate 37, a limiting rotation rod 35 is fixedly connected between the reinforcement plate 37 and the positioning plate 31, the limiting rotation rod 35 is located at a corner of the positioning plate 31, the limiting rotation rod 35 is rotatably mounted inside the arc-shaped protrusion 23, an anti-slip block 39 is movably mounted inside the inclined baffle plate 32, one side of the anti-slip block 39 is fixedly connected with a dustproof cloth 34, the other end of the dustproof cloth 34 is fixedly connected with a limiting roller rod 38, the dustproof cloth 34 is wound on the outer wall of the limiting roller rod 38, the limiting roller rod 38 is rotatably mounted inside the trapezoidal boss 22, and the dustproof cloth 34 passes through the trapezoidal boss 22.

[0044] In this embodiment, the positioning plate 31 of the closing assembly 3 is rotatably connected to the arc-shaped protrusion 23. When the elevator stops operating, the positioning plate 31 is pushed to rotate around the arc-shaped protrusion 23, the angle of the inclined baffle 32 is changed, and the dustproof cloth 34 is pulled out from the trapezoidal boss 22 to close the space between the positioning plate 31 and the chain, preventing dust from contacting the chain near the trapezoidal boss 22;

[0045] The reinforcement plate 37 and the extension plate 36 can greatly improve the structural strength of the positioning plate 31, thereby enhancing the strength of the closing component 3. Under normal conditions, the dustproof cloth 34 is wound on the limiting roller rod 38, and the limiting roller rod 38 is connected to the trapezoidal boss 22 through a torsion spring to ensure the stability of the dustproof cloth 34 to avoid affecting the transmission of the chain. The dustproof cloth 34 is connected to the inclined baffle 32 through an anti-slip block 39. When the inclined baffle 32 rotates, the original position of the inclined baffle 32 can be covered.

[0046] The use method and working principle of the device: the bearing base body 4 is used to connect the bearing of the hoist, and the bearing base body 4 is installed inside the sealing box 1, and the chain passes through the trapezoidal boss 22 and the sealing cover plate 21 on the top of the sealing box 1. The filling component 25 is located at the intersection of the chain and the trapezoidal boss 22 to fill the gap there. The specific position is determined by the positioning card slot 24, and a separate closing component 3 is also installed on the top of the trapezoidal boss 22 to protect the chain when the hoist stops operating;

[0047] During the chain transmission process, the rubber filling piece 251 maintains contact with the chain through the triangular tip contact 252 to prevent dust from entering the interior of the sealing box 1 through the gap. The general shape of the rubber filling piece 251 is determined by the two positioning rods 257, and the specific shape is determined by multiple first support rods 260 and second support rods 261. During the chain transmission process, the docking end 255 can ensure that the rubber filling piece 251 can rotate, and when the chain surface convexly squeezes the first support rod 260, the first support rod 260 can move along the direction of the limit plate 253, and synchronously compress the double-headed spring telescopic rod 263;

[0048] The two double-headed spring telescopic rods 263 are connected to the first support rod 260 and the second support rod 261 through the limiting ring 262, and can rotate within a certain range to adapt to the displacement of the first support rod 260, and in the process of the first support rod 260 moving, the docking rod 266 will be pushed into the connecting end 259, and when the protrusion on the chain surface leaves the first support rod 260, the rebound of the double-headed spring telescopic rod 263 and the tension spring 267 will rebound the first support rod 260 to the initial position, completing the shape recovery of the rubber filling piece 251;

[0049] When the elevator stops operating, the positioning plate 31 is pushed to rotate around the arc-shaped protrusion 23, and the dustproof cloth 34 is pulled out from the trapezoidal boss 22 by using the inclined baffle plate 32. The dustproof cloth 34 is normally wound around the limiting roller rod 38 to avoid affecting the normal transmission of the chain. After the dustproof cloth 34 is pulled out, the chain near the trapezoidal boss 22 can be protected to reduce the probability of the chain in the area surrounded by the dustproof cloth 34 coming into contact with external dust.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-lock cold slag plate chain hoist, comprising a bearing base body (4), characterized in that: A sealing box (1) is fixedly connected to the outer wall of the bearing base body (4); a sealing assembly (2) is movably connected to the top of the sealing box (1); the sealing assembly (2) comprises a sealing cover plate (21) and a trapezoidal boss (22); the trapezoidal boss (22) is fixedly mounted on the upper surface of the sealing cover plate (21); a filling assembly (25) is movably mounted on the inner wall of the trapezoidal boss (22); and closing assemblies (3) are rotatably connected to both sides of the trapezoidal boss (22); The filling assembly (25) comprises a rubber filling sheet (251), a positioning rod (257), a first support rod (260) and a second support rod (261); the positioning rod (257), the first support rod (260) and the second support rod (261) are arranged on the inner side of the rubber filling sheet (251) in a vertically symmetrical triangle; the positioning rod (257) is located at both ends of the rubber filling sheet (251); a butt end (255) is rotatably mounted at the intersection of the positioning rod (257), the first support rod (260) and the second support rod (261) with the rubber filling sheet (251); positioning ends (256) are fixedly mounted at both ends of the positioning rod (257); a vertical rod (258) is fixedly mounted at the center of the positioning rod (257); one end of the vertical rod (258) is movably connected to a connecting end (259); the outer walls of the first support rod (260) and the second support rod (261) are The two support rods (260 and 261) are rotatably connected to a limit ring (262), a double-headed spring telescopic rod (263) is fixedly connected between the two diagonal limit rings (262), a T-shaped accommodating cavity (264) is provided inside the connecting end (259), a guide rod (265) is fixedly installed on the inner wall of the T-shaped accommodating cavity (264), a docking rod (266) is slidably connected to the outer wall of the guide rod (265), the other ends of the two docking rods (266) are respectively fixedly connected to the outer walls of the first support rod (260) and the second support rod (261), one end of the docking rod (266) is fixedly connected to a tension spring (267), the other end of the tension spring (267) is fixedly connected to the inner wall of the T-shaped accommodating cavity (264), the tension spring (267) is sleeved on the outer wall of the guide rod (265), and the edge of the docking rod (266) overlaps the inner wall of the T-shaped accommodating cavity (264).

2. The anti-lock cold slag plate chain hoist according to claim 1, characterized in that: The positioning end head (256) is fixedly mounted inside the trapezoidal boss (22), a limiting plate (253) is fixedly mounted inside the trapezoidal boss (22), a limiting slide groove (254) is provided on one side of the limiting plate (253), and one end of the first support rod (260) and the second support rod (261) are slidably connected to the groove wall of the limiting slide groove (254).

3. The anti-lock cold slag plate chain hoist according to claim 1, characterized in that: A triangular tip (252) is fixedly mounted on the outer wall of the rubber filling piece (251). The rubber filling piece (251) is located on both sides of the trapezoidal boss (22). A positioning slot (24) is provided at the junction of the trapezoidal boss (22) and the limiting plate (253).

4. The anti-lock cold slag plate chain hoist according to claim 1, characterized in that: The bottom of the sealing cover plate (21) is buckled onto the top of the sealing box (1), an arc-shaped protrusion (23) is fixedly mounted on the top of the trapezoidal boss (22), and the closing component (3) is rotatably mounted on the top of the arc-shaped protrusion (23).

5. The anti-lock cold slag plate chain hoist according to claim 1, characterized in that: The closing assembly (3) comprises a positioning plate (31) and an inclined baffle (32); the positioning plate (31) is fixedly mounted on both sides of the inclined baffle (32); a contact plate (33) is fixedly mounted on one end of the inclined baffle (32); and the angle between the inclined baffle (32) and the contact plate (33) is set to one hundred and thirty-five degrees.

6. The anti-lock cold slag plate chain hoist according to claim 5, characterized in that: An extension plate (36) is fixedly mounted on one side of the positioning plate (31), and a reinforcement plate (37) is fixedly connected to the other end of the extension plate (36).

7. The anti-lock cold slag plate chain hoist according to claim 6, characterized in that: A limit rotating rod (35) is fixedly connected between the reinforcing plate (37) and the positioning plate (31). The limit rotating rod (35) is located at a corner of the positioning plate (31). The limit rotating rod (35) is rotatably mounted inside the arc-shaped protrusion (23).

8. The anti-lock cold slag plate chain hoist according to claim 5, characterized in that: An anti-dropout block (39) is movably mounted inside the inclined baffle (32), and a dustproof cloth (34) is fixedly connected to one side of the anti-dropout block (39).

9. The anti-lock cold slag plate chain hoist according to claim 8, characterized in that: The other end of the dustproof cloth (34) is fixedly connected to a limiting roller rod (38), and the dustproof cloth (34) is wound on the outer wall of the limiting roller rod (38).

10. The anti-lock cold slag plate chain hoist according to claim 9, characterized in that: The limiting roller rod (38) is rotatably mounted inside the trapezoidal boss (22), and the dustproof cloth (34) passes through the trapezoidal boss (22).

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