Spliced water surface oil containment and absorption device

Abstract

The present application relates to the technical field of water surface oil pollution treatment, in particular to a spliced water surface oil pollution surrounding and absorbing device, which solves the problems that the existing oil containment boom is inconvenient to recycle and place during surrounding of water surface oil, and the oil containment boom is easily affected by waves to cause leakage of the oil when surrounding the oil with the skirt edge. The spliced water surface oil pollution surrounding and absorbing device comprises a surrounding unit, the surrounding unit comprises a plurality of floating air bags, a splicing and separating mechanism is installed on the outer side of the floating air bag, a counterweight installation mechanism is installed at the bottom end of the splicing and separating mechanism, and two adjacent floating air bags are connected through an air bag installation mechanism. The present application processes the oil containment boom in units, which is convenient to splice and store and can effectively ensure the stability of the whole during surrounding of the oil, and the single air bag damage can keep the overall function stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water surface oil pollution treatment, in particular to a spliced water surface oil pollution surrounding and absorbing device. BACKGROUND

[0002] When an oil spill accident occurs on the sea, an oil containment boom is usually used in the marine oil spill recovery structure to contain the oil spill, which can prevent the oil spill from spreading again and guide the oil spill to a safe and suitable area for further treatment and recovery. The oil containment boom is a device for containing oil and pollutants on the water surface to prevent their spread, which is composed of inflatable floats, skirts, tension belts, counterweight chains, anchor components, etc. Portable oil containment booms are commonly used to block the spread of oil pollution in sea and port oil spill accidents, and can stably float on the water surface to prevent oil spill, reduce the oil spill area, and transfer the oil spill and floating objects. The oil containment boom needs to be easily retracted and placed when surrounding the floating oil.

[0003] The existing oil containment boom is not convenient to recover and place during the surrounding process of the water surface floating oil, and when the oil containment boom uses the skirt to surround the floating oil, the floating oil is easily leaked due to the influence of waves. Therefore, it does not meet the existing needs, and for this purpose, a spliced water surface oil pollution surrounding and absorbing device is proposed. SUMMARY

[0004] The present application aims to provide a spliced water surface oil pollution surrounding and absorbing device to solve the problems of the existing oil containment boom in the background art, such as not being convenient to recover and place during the surrounding process of the water surface floating oil, and the floating oil being easily leaked due to the influence of waves when the oil containment boom uses the skirt to surround the floating oil.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a spliced water surface oil pollution surrounding and absorbing device, comprising a surrounding unit, the surrounding unit comprising a plurality of floating air bags, the outer side of the floating air bag being provided with a splicing and separating mechanism, the bottom end of the splicing and separating mechanism being provided with a counterweight mounting mechanism, two adjacent floating air bags being connected through an air bag mounting mechanism, the number of floating air bags, splicing and separating mechanisms and counterweight mounting mechanisms being consistent, two floating air bags and splicing and separating mechanisms being connected through two connecting strips, the floating air bag comprising an air bag elastic sealing layer.

[0006] The air bag mounting mechanism comprises a sealing connection sleeve, one end of the air bag elastic sealing layer being fixedly connected with the sealing connection sleeve, the inner side of the sealing connection sleeve being provided with two semicircular positioning blocks, one side of the semicircular positioning block being rotatably connected with a rotating ball head, the inner side of the rotating ball head being provided with a connecting holder, the inner side of one of the semicircular positioning blocks being provided with two air guide channels, the air guide channels being provided with gas inlet nozzles.

[0007] Preferably, the floating air bag further comprises a woven connecting layer connected to the outside of the air bag elastic sealing layer, the woven connecting layer is bonded and fixed with the air bag elastic sealing layer, the outside of the woven connecting layer is fixedly installed with a protective coating layer, the inside of the protective coating layer is provided with a plurality of elastic support wires, and the outer surface of the protective coating layer is provided with a corrosion-resistant layer.

[0008] Preferably, the splicing and separating mechanism comprises an air bag mounting clamp, the outside of the corrosion-resistant layer is fixedly installed with the air bag mounting clamp, one end of the air bag mounting clamp is installed with a vertical mounting plate, the air bag mounting clamp is connected and fixed with the vertical mounting plate through a locking knob, the vertical mounting plate is provided with two arc-shaped extension plates, both sides of the vertical mounting plate are fixedly installed with corrugated partition plates, the outside of one end of the corrugated partition plate is installed with a connecting plug, and the upper side of the air bag mounting clamp is installed with an absorption box, the absorption box is connected and fixed with the vertical mounting plate through two support angle plates, and the inside of the absorption box is installed with an absorption filling block.

[0009] Preferably, the counterweight mounting mechanism comprises a mounting block, the bottom end of the vertical mounting plate is fixedly installed with the mounting block, one side of the mounting block is fixedly installed with a guide sleeve plate, the inside of the guide sleeve plate is slidably connected with a gravity center adjusting block, and the bottom end of the mounting block is fixedly installed with a plurality of counterweight drag chains.

[0010] Preferably, one side of the semicircular positioning block is provided with an arc-shaped groove, the rotating ball head is arranged on the inside of the arc-shaped groove, the middle part of the connecting holder is connected through threads with the rotating ball head, the outside of the connecting holder is in contact with the inner wall of the air bag elastic sealing layer, each sealing connecting sleeve is connected through threads with two adjacent semicircular positioning blocks, and the inside of two adjacent semicircular positioning blocks is provided with a sealing gasket.

[0011] Preferably, the bottom end of the gas conveying nozzle is connected through threads with the sealing connecting sleeve and is inserted into the inside of the gas guide channel, and the gas conveying nozzle and the inside of the air bag elastic sealing layer are in communication through the gas guide channel.

[0012] Preferably, the protective coating layer and the air bag elastic sealing layer are connected and fixed through the woven connecting layer, the protective coating layer and the elastic support wire are bonded and fixed, the material of the elastic support wire is an aluminum alloy strip, and the inside of the protective coating layer and the corrosion-resistant layer is provided with a light-shielding film.

[0013] Preferably, the bottom end of the locking knob penetrates through the air bag mounting clamp and is connected with the vertical mounting plate through threads, the absorption box and the support angle plate are connected and fixed through screws, both ends of the absorption box are provided with a one-way valve, and the side of the absorption box close to the air bag elastic sealing layer is provided with a waist-shaped water inlet hole.

[0014] Preferably, both sides of the connecting strip are provided with insertion slots, one end of the corrugated partition plate extends to the inner side of the insertion slot, and the outer surface of the corrugated partition plate and the connecting strip is provided with a stain-resistant layer.

[0015] Preferably, the mounting block and the guide sleeve plate are integrally injection molded, the inner side of the guide sleeve plate is provided with a sliding groove, the center of gravity adjusting block is arranged on the inner side of the sliding groove, and the adjacent two counterweight drag chains are connected through threads.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] 1、The present application is convenient for splicing two corrugated partition plates in adjacent two splicing partition mechanisms through the connecting strip, the vertical mounting plate can be in a vertical stable state under the counterweight effect of the center of gravity adjusting block and the counterweight drag chain, the overall floating support can be realized by inflating the air bag elastic sealing layer, the corrugated partition plate and the connecting strip can separate and enclose the oil stains on the water surface, the oil stains on the water surface are unidirectionally transported through the absorption box, and are adsorbed and intercepted through the absorption filling block.

[0018] 2、When the surrounding unit shakes due to waves on the water surface, adjacent two floating air bags can swing through the air bag mounting mechanism, the connecting holder drives the rotating ball head to rotate on the inner side of the semicircular positioning block, so that the connection of the multiple floating air bags can be stable in the swinging state, and the function loss of the surrounding unit caused by air leakage of a single air bag elastic sealing layer is avoided.

[0019] 3、The corrugated partition plate can be stretched and retracted by itself, which is convenient for folding and unfolding and adapting to the impact caused by waves on the water surface, the sliding groove is arranged on the inner side of the guide sleeve plate, the center of gravity adjusting block is arranged on the inner side of the sliding groove, so that when the floating air bag and the splicing partition mechanism shake due to wave impact, the sliding of the center of gravity adjusting block on the inner side of the guide sleeve plate and the vertical counterweight of the counterweight drag chain can effectively reduce the shaking amount of the floating air bag and the splicing partition mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the whole application;

[0021] Figure 2 It is a schematic installation structure diagram of the splicing partition mechanism of the application;

[0022] Figure 3 It is a schematic partial cross-sectional structure diagram of the whole application;

[0023] Figure 4 It is a schematic partial cross-sectional structure diagram of the splicing partition mechanism of the application;

[0024] Figure 5A partial cross-sectional structure schematic diagram of the air bag mounting mechanism of the present application;

[0025] Figure 6 A partial cross-sectional structure schematic diagram of the floating air bag of the present application.

[0026] In the figure: 1, the fence unit; 2, the floating air bag; 201, the air bag elastic sealing layer; 202, the woven connecting layer; 203, the protective coating layer; 204, the elastic support wire; 205, the corrosion-resistant layer; 3, the splicing and separating mechanism; 301, the arc extension plate; 302, the absorption box; 303, the corrugated partition plate; 304, the connecting plug; 305, the air bag mounting clamp; 306, the vertical mounting plate; 307, the locking knob; 308, the absorption filling block; 309, the support angle plate; 4, the counterweight mounting mechanism; 401, the guide sleeve plate; 402, the gravity center adjusting block; 403, the counterweight drag chain; 404, the mounting block; 5, the air bag mounting mechanism; 501, the sealing connecting sleeve; 502, the semicircular positioning block; 503, the rotating ball head; 504, the connecting holder; 505, the air guide channel; 506, the gas inlet; 6, the connecting strip. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0028] Please refer to Figures 1 to 6 An embodiment provided by the present application: a splicing type water surface oil containment and absorption device, comprising a fence unit 1, the fence unit 1 comprising a plurality of floating air bags 2, the outer side of the floating air bag 2 being provided with a splicing and separating mechanism 3, the bottom end of the splicing and separating mechanism 3 being provided with a counterweight mounting mechanism 4, the number of the floating air bag 2, the splicing and separating mechanism 3 and the counterweight mounting mechanism 4 being consistent, wherein two floating air bags 2 and the splicing and separating mechanism 3 are connected through two connecting strips 6, the floating air bag 2 comprising an air bag elastic sealing layer 201, the outer side of the air bag elastic sealing layer 201 being fixed with a woven connecting layer 202, the outer side of the woven connecting layer 202 being fixedly provided with a protective coating layer 203, the inside of the protective coating layer 203 being provided with a plurality of elastic support wires 204, the outer surface of the protective coating layer 203 being provided with a corrosion-resistant layer 205, the protective coating layer 203 and the air bag elastic sealing layer 201 being connected and fixed through the woven connecting layer 202, the protective coating layer 203 and the elastic support wire 204 being adhesively fixed, the material of the elastic support wire 204 being an aluminum alloy strip, the inner side of the protective coating layer 203 and the corrosion-resistant layer 205 being provided with a light shielding film;

[0029] By unitizing the oil containment boom, the boom can be easily assembled and stored, and the overall stability of the boom can be maintained when the boom is impacted by waves, and the overall function of the boom can be maintained when a single air bag is damaged.

[0030] Referring to Figure 5 , two adjacent floating air bags 2 are connected by an air bag mounting mechanism 5, the air bag mounting mechanism 5 includes a sealed connection sleeve 501, one end of the air bag elastic sealing layer 201 is fixedly connected with the sealed connection sleeve 501, two semicircular positioning blocks 502 are installed on the inner side of the sealed connection sleeve 501, a rotating ball head 503 is rotatably connected to one side of the semicircular positioning block 502, a connecting holder 504 is installed on the inner side of the rotating ball head 503, two air guide channels 505 are provided on the inner side of one of the semicircular positioning blocks 502, a gas outlet nozzle 506 is installed on the air guide channel 505, an arc-shaped groove is provided on one side of the semicircular positioning block 502, the rotating ball head 503 is arranged inside the arc-shaped groove, the middle part of the connecting holder 504 is threadedly connected with the rotating ball head 503, the outer side of the connecting holder 504 is in contact with the inner wall of the air bag elastic sealing layer 201, each sealed connection sleeve 501 is threadedly connected with two adjacent semicircular positioning blocks 502, a sealing gasket is arranged on the inner side of the two adjacent semicircular positioning blocks 502, the bottom end of the gas outlet nozzle 506 is threadedly connected with the sealed connection sleeve 501 and is inserted into the inner side of the air guide channel 505, the gas outlet nozzle 506 is in communication with the inside of the air bag elastic sealing layer 201 through the air guide channel 505, when the two adjacent floating air bags 2 swing, the connecting holder 504 drives the rotating ball head 503 to rotate inside the semicircular positioning block 502, thereby maintaining the connection stability of the multiple floating air bags 2 in the swinging state, and avoiding the loss of function of the containment unit 1 caused by air leakage of a single air bag elastic sealing layer 201.

[0031] Referring to Figures 2 to 4 , the splicing and separating mechanism 3 includes an air bag mounting clamp 305, the air bag mounting clamp 305 is fixedly installed on the outer side of the corrosion-resistant layer 205, one end of the air bag mounting clamp 305 is provided with a vertical mounting plate 306, the air bag mounting clamp 305 is fixedly connected with the vertical mounting plate 306 through a locking knob 307, the vertical mounting plate 306 is provided with two arc-shaped extension plates 301, the two sides of the vertical mounting plate 306 are fixedly provided with corrugated separation plates 303, the outer side of one end of the corrugated separation plate 303 is provided with a connecting plug 304, the air bag elastic sealing layer 201 can be inflated to support the overall floating, and the corrugated separation plate 303 and the connecting plug 304 can separate and contain the oil on the water surface;

[0032] The upper side of the air bag mounting clamp 305 is provided with an absorption box 302, which is connected and fixed with the vertical mounting plate 306 through two support angle plates 309. The inner side of the absorption box 302 is provided with an absorption filling block 308. The bottom end of the locking knob 307 penetrates the air bag mounting clamp 305 and is connected with the vertical mounting plate 306 through screw thread. The absorption box 302 is connected and fixed with the support angle plate 309 through screw. The two ends of the absorption box 302 are provided with one-way valves. The side of the absorption box 302 close to the air bag elastic sealing layer 201 is provided with a waist-shaped water inlet hole. The two sides of the connecting plug strip 304 are provided with plug grooves. One end of the corrugated partition plate 303 extends to the inner side of the plug groove. The outer surfaces of the corrugated partition plate 303 and the connecting plug strip 304 are provided with a stain-resistant layer. The corrugated partition plates 303 on both sides of the vertical mounting plate 306 can stretch and contract by themselves, which is convenient for folding and unfolding and adapting to the impact caused by water waves.

[0033] Referring to Figures 1 to 4 The counterweight mounting mechanism 4 comprises a mounting block 404. The bottom end of the vertical mounting plate 306 is fixedly provided with the mounting block 404. One side of the mounting block 404 is fixedly provided with a guide sleeve plate 401. The inner side of the guide sleeve plate 401 is slidably connected with a gravity center adjusting block 402. The bottom end of the mounting block 404 is fixedly provided with a plurality of counterweight drag chains 403. The mounting block 404 and the guide sleeve plate 401 are integrally injection molded. The inner side of the guide sleeve plate 401 is provided with a sliding groove. The gravity center adjusting block 402 is arranged in the inner side of the sliding groove. Adjacent two counterweight drag chains 403 are connected through screw thread. When the floating air bag 2 and the splicing and partition mechanism 3 are shaken by wave impact, the gravity center adjusting block 402 slides in the inner side of the guide sleeve plate 401 and the vertical counterweight of the counterweight drag chain 403 can effectively reduce the shaking amount of the floating air bag 2 and the splicing and partition mechanism 3.

[0034] When the water surface oil containment absorption device is used, the air bag mounting clamp 305 is sleeved on the outer side of the floating air bag 2 and is fixedly connected with the vertical mounting plate 306 through the locking knob 307. The corrugated partition plates 303 are fixedly arranged on both sides of the vertical mounting plate 306. One end of the corrugated partition plate 303 extends to the inner side of the plug groove arranged on both sides of the connecting plug strip 304. Then, the two corrugated partition plates 303 in the adjacent two splicing and partition mechanisms 3 are spliced through the connecting plug strip 304. The adjacent two floating air bags 2 are fixedly connected through one air bag mounting mechanism 5. Then, the floating air bag 2, the splicing and partition mechanism 3, the counterweight mounting mechanism 4 and the air bag mounting mechanism 5 are used to form a containment unit 1. Two floating air bags 2 and splicing and partition mechanisms 3 are connected through two connecting strips 6. When the containment is used, the two containment units 1 are clamped and combined through the connecting strips 6 and are placed on the water surface. The vertical mounting plate 306 can be in a vertical stable state under the counterweight action of the gravity center adjusting block 402 and the counterweight drag chain 403.

[0035] And the gas injection is carried out through the gas injection nozzle 506, specifically, the gas injection nozzle 506 is connected with the inside of the air bag elastic sealing layer 201 through the gas guide channel 505, and then the overall floating support can be realized by inflating the air bag elastic sealing layer 201, the corrugated partition plate 303 and the connecting plug strip 304 can separate and block the oil stains on the water surface, the one-way valve is arranged at both ends of the absorption tank 302, and the waist-shaped water inlet hole is arranged on the side of the air bag elastic sealing layer 201, then the oil stains on the water surface are one-way transported through the absorption tank 302, and are adsorbed and intercepted through the absorption filling block 308;

[0036] When the surrounding unit 1 shakes due to the waves on the water surface, the adjacent two floating air bags 2 can swing through the air bag mounting mechanism 5, specifically, the arc-shaped groove is arranged on one side of the semicircular positioning block 502, the rotating ball head 503 is arranged on the inner side of the arc-shaped groove, and the connecting holder 504 is connected with the rotating ball head 503 through threads, so that the adjacent two floating air bags 2 drive the rotating ball head 503 to rotate on the inner side of the semicircular positioning block 502 when swinging, then the connection stability of the multiple floating air bags 2 in the swinging state can be maintained, and the function loss of the surrounding unit 1 caused by the air leakage of the single air bag elastic sealing layer 201 is avoided, the corrugated partition plate 303 on both sides of the vertical installation plate 306 can be stretched and contracted, so as to be convenient for retraction and adapt to the impact caused by the waves on the water surface, the sliding groove is arranged on the inner side of the guide sleeve plate 401, and the gravity center adjusting block 402 is arranged on the inner side of the sliding groove, so that the floating air bag 2 and the splicing partition mechanism 3 can slide on the inner side of the guide sleeve plate 401 and the vertical counterweight of the counterweight drag chain 403 when being shaken by the waves, and the shaking amount of the floating air bag 2 and the splicing partition mechanism 3 can be effectively reduced.

[0037] It is apparent for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A modular water surface oil pollution containment and absorption device, comprising containment unit (1), characterized in that: The enclosure unit (1) includes multiple floating airbags (2). A splicing and separating mechanism (3) is installed on the outside of the floating airbags (2). A counterweight installation mechanism (4) is installed at the bottom of the splicing and separating mechanism (3). Two adjacent floating airbags (2) are connected by an airbag installation mechanism (5). The number of floating airbags (2), splicing and separating mechanism (3) and counterweight installation mechanism (4) is the same. Two floating airbags (2) are connected to the splicing and separating mechanism (3) by two connecting strips (6). The floating airbag (2) includes an airbag elastic sealing layer (201) and a corrosion-resistant layer (205). The airbag installation mechanism (5) includes a sealing connecting sleeve (501), one end of the airbag elastic sealing layer (201) is fixedly connected to the sealing connecting sleeve (501), two semi-circular positioning blocks (502) are installed on the inner side of the sealing connecting sleeve (501), a rotating ball head (503) is rotatably connected to one side of the semi-circular positioning block (502), a connecting retainer (504) is installed on the inner side of the rotating ball head (503), and the outer side of the connecting retainer (504) is in close contact with the inner wall of the airbag elastic sealing layer (201). Two air guide channels (505) are provided on the inner side of one of the semi-circular positioning blocks (502), and an air supply nozzle (506) is installed in the air guide channel (505). The splicing and separating mechanism (3) includes an airbag mounting clamp (305). An airbag mounting clamp (305) is fixedly installed on the outer side of the corrosion-resistant layer (205). A vertical mounting plate (306) is installed at one end of the airbag mounting clamp (305). The airbag mounting clamp (305) and the vertical mounting plate (306) are connected and fixed by a locking knob (307). The vertical mounting plate (306) has two arc-shaped extension plates (301). Corrugated partition plates (303) are fixedly installed on both sides of the vertical mounting plate (306). A connecting strip (304) is installed on the outer side of one end of the corrugated partition plate (303). An absorption box (302) is installed above the airbag mounting clamp (305). The absorption box (302) is connected and fixed to the vertical mounting plate (306) through two supporting corner plates (309). An absorption filling block (308) is installed on the inner side of the absorption box (302).

2. The modular water surface oil pollution containment and absorption device according to claim 1, characterized in that: The floating airbag (2) also includes a braided connecting layer (202) connected to the outside of the airbag elastic sealing layer (201). The braided connecting layer (202) is bonded and fixed to the airbag elastic sealing layer (201). A protective covering layer (203) is fixedly installed on the outside of the braided connecting layer (202). The interior of the protective covering layer (203) is provided with multiple elastic support wires (204). The outer surface of the protective covering layer (203) is provided with a corrosion-resistant layer (205).

3. The modular water surface oil spill containment and absorption device according to claim 2, characterized in that: The counterweight installation mechanism (4) includes an installation block (404). The installation block (404) is fixedly installed at the bottom end of the vertical installation plate (306). A guide sleeve plate (401) is fixedly installed on one side of the installation block (404). A center of gravity adjustment block (402) is slidably connected to the inner side of the guide sleeve plate (401). A plurality of counterweight drag chains (403) are fixedly installed at the bottom end of the installation block (404).

4. The modular water surface oil pollution containment and absorption device according to claim 2, characterized in that: The semi-circular positioning block (502) has an arc-shaped groove on one side, and the rotating ball head (503) is located inside the arc-shaped groove. The middle part of the connecting retainer (504) is connected to the rotating ball head (503) by a thread. Each sealing connecting sleeve (501) is connected to two adjacent semi-circular positioning blocks (502) by a thread. The inner side of two adjacent semi-circular positioning blocks (502) is provided with a sealing gasket.

5. The modular water surface oil spill containment and absorption device according to claim 2, characterized in that: The bottom end of the air supply nozzle (506) is connected to the sealing connecting sleeve (501) by a thread and inserted into the inner side of the air guide channel (505). The air supply nozzle (506) and the interior of the airbag elastic sealing layer (201) are connected through the air guide channel (505).

6. The modular water surface oil spill containment and absorption device according to claim 2, characterized in that: The protective covering layer (203) and the airbag elastic sealing layer (201) are connected and fixed by a braided connecting layer (202). The protective covering layer (203) is bonded and fixed to the elastic support wire (204). The elastic support wire (204) is made of aluminum alloy strip. The inner side of the protective covering layer (203) and the corrosion resistant layer (205) is provided with a light-shielding film.

7. The modular water surface oil spill containment and absorption device according to claim 2, characterized in that: The bottom end of the locking knob (307) passes through the airbag mounting clamp (305) and is connected to the vertical mounting plate (306) by threads. The absorption box (302) and the support corner plate (309) are fixed by screws. Both ends of the absorption box (302) are provided with one-way valves. The absorption box (302) is provided with a waist-shaped water inlet on the side near the elastic sealing layer (201) of the airbag.

8. The modular water surface oil pollution containment and absorption device according to claim 2, characterized in that: The connecting strip (304) has slots on both sides, and one end of the corrugated partition plate (303) extends to the inside of the slot. The outer surfaces of the corrugated partition plate (303) and the connecting strip (304) are both provided with a stain-resistant layer.

9. A modular water surface oil spill containment and absorption device according to claim 3, characterized in that: The mounting block (404) and the guide sleeve (401) are integrally injection molded. The inner side of the guide sleeve (401) is provided with a sliding groove. The center of gravity adjustment block (402) is located inside the sliding groove. The two adjacent counterweight drag chains (403) are connected by threads.

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