Hydraulically-driven sealing circulating type anchor cable cutting device

The liquid pressure-driven sealed and circulating anchor rod cutting device addresses safety hazards by containing sparks and applying fire-resistant fluid, ensuring safe and protected cutting operations.

CN120306718AInactive Publication Date: 2025-07-15ANHUI UNIV OF SCI & TECH
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Patent Information

Application Number
CN202510700588.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-28
Publication Date
2025-07-15
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing anchor cable cutting device lacks a sealing and protective structure during the cutting process, which causes sparks to splash, poses safety risks, and no flame retardant measures are installed to extinguish the cutting spark.

Method used

A hydraulically driven sealed circulating anchor cable cutting device is designed, and a spacer is provided in the cutting area through a cover mechanism and a closure mechanism for sealing, and a flame retardant liquid is sprayed in combination with a negative pressure circulation mechanism for protection.

Benefits of technology

It effectively avoids the splash of sparks, realizes safety and flame retardant protection of the cutting process, and ensures safe operation.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The invention discloses a hydraulic drive sealing circulation type anchor cable cutting device, and relates to the field of anchor cable cutting equipment.The hydraulic drive sealing circulation type anchor cable cutting device specifically comprises an anchor cable body, a cutting table is arranged at the bottom of the anchor cable body, a cover sleeving mechanism and a sealing mechanism are arranged at the top of the cutting table, and the cover sleeving mechanism comprises a supporting frame fixedly installed at the top of the cutting table; a hydraulic telescopic cylinder is fixedly mounted at the top of the supporting frame; the two isolation covers are synchronously arranged on the outer side of the cutting saw blade of the shearing anchor cable and the cutting position where the anchor cable is placed, when the anchor cable is sheared, the two isolation covers are buckled with each other to seal the cutting area, sealing treatment is conducted synchronously, and the situation that sparks generated in the cutting process directly burst and splash is avoided; the liquid storage tank is arranged below the lower isolation cover and used for containing flame retardant liquid, meanwhile, the structure capable of absorbing the flame retardant liquid is arranged on the upper isolation cover and used for spraying the flame retardant liquid from the upper portion, namely, the flame retardant liquid is sprayed to the cutting position of the cutting saw blade, and the flame retardant protection effect is achieved.
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Description

Technical Field

[0001] The present invention relates to the field of anchor cable cutting equipment, and more specifically, to a hydraulically driven sealed circulation type anchor cable cutting device. Background Art

[0002] A large number of anchor cables are required for support in underground coal mines. Before use, the anchor cables need to be cut into sections according to the actual length on the ground. The purchased anchor cables are wound around a winding shaft in a whole. Usually, several anchor cables of a certain length need to be cut. The winding shaft is installed on a rotating rack by a forklift, and the conveying of the anchor cable is realized by manual pulling. After the worker pulls the end of the anchor cable in place, the cutting machine is manually operated to cut the anchor cable.

[0003] For example, the utility model patent CN204735779U discloses an anchor cable shearing mechanism, which cuts the anchor cable by a hydraulically pushed cutting blade. The cutting operation can be controlled by a hydraulic speed regulating valve. At the same time, the anchor cable is also clamped and fastened by hydraulic pressure, which effectively ensures the reuse of the cutting blade and also effectively ensures the personal safety of the operator. It can be widely applied to the anchor cable shearing in mine work.

[0004] However, the above-mentioned patent document only has the function of controlling and shearing the anchor cable. In actual use, there is still a lack of a sealing protection structure during the shearing of the anchor cable. During the process of cutting the anchor cable by the cutting saw blade driven by hydraulic pressure, the generated sparks directly splash, and it is extremely easy to have potential safety hazards.

[0005] At the same time, there is also no structure that can achieve a flame retardant effect during the cutting process, that is, there is no structure for spraying a flame retardant liquid to extinguish the cutting sparks, and reasonable protection measures cannot be provided. Therefore, a solution is provided herein. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hydraulically driven sealed circulation type anchor cable cutting device to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A hydraulically driven sealed circulation type anchor cable cutting device, including an anchor cable body, a cutting table is arranged at the bottom of the anchor cable body, and a sleeve covering mechanism and a closing mechanism are arranged on the top of the cutting table;

[0008] The sleeve covering mechanism includes a support frame fixedly installed on the top of the cutting table, a hydraulic telescopic cylinder is fixedly installed on the top of the support frame, the hydraulic telescopic cylinder is arranged vertically downward, a sleeve is arranged at the bottom of the hydraulic telescopic cylinder, the sleeve is arranged horizontally, a motor is fixedly installed on the inner wall of the sleeve, and a cutting blade is arranged on one side of the motor. The cutting blade is arranged vertically.

[0009] In a preferred embodiment, retaining plates are fixedly installed on the outer walls on both sides of the sleeve. Limiting springs are fixedly installed on the tops of the two retaining plates. The two limiting springs are symmetrically arranged with each other. The tops of the two limiting springs are jointly fixedly installed with an upper partition cover. The upper partition cover is sleeved on the outer wall of the cutting blade. The width of the upper partition cover is greater than the width of the cutting blade.

[0010] In a preferred embodiment, a lower partition cover is provided at the bottom of the upper partition cover. The lower partition cover is fixedly installed on the top of the cutting table. The lower partition cover and the upper partition cover are correspondingly arranged with each other. A slot is opened in the middle of the lower partition cover. The slot and the cable anchor body are correspondingly arranged with each other.

[0011] In a preferred embodiment, the closing mechanism includes a plurality of support plates slidably installed on the top of the cutting table. The plurality of support plates are located on both sides of the outer wall of the lower partition cover. The plurality of support plates are arranged in pairs correspondingly. The plurality of support plates are arranged vertically. Push rollers are rotatably installed on the tops of the plurality of support plates. The plurality of push rollers are arranged obliquely. The outer walls of the plurality of push rollers are in mutual contact with the outer wall of the cable anchor body. Support springs are fixedly installed at the bottoms of the plurality of support plates. The support springs are fixedly installed on the inner wall of the cutting table.

[0012] In a preferred embodiment, first toothed plates are fixedly installed on the outer walls of the plurality of support plates. A gear is meshed with one side of the first toothed plate. The gear is rotatably installed on the inner wall of the cutting table. A second toothed plate is meshed with the other side of the gear. The second toothed plate is slidably installed on the inner wall of the cutting table. The second toothed plate is arranged vertically. A sealing plate is fixedly installed at the top of the second toothed plate. The sealing plate is slidably installed on the outer wall of the lower partition cover. The sealing plate and the outer wall of the bottom of the upper partition cover are correspondingly arranged.

[0013] In a preferred embodiment, a negative pressure circulation mechanism is provided at the bottom of the lower partition cover. The negative pressure circulation mechanism includes a liquid leakage pipe communicated with the bottom of the lower partition cover. The bottom of the liquid leakage pipe is communicated with a liquid storage tank. The liquid storage tank is fixedly installed at the bottom of the cutting table. Liquid supply pipes are communicated with both sides of the liquid storage tank. The two liquid supply pipes are arranged vertically upward. The tops of the two liquid supply pipes are jointly communicated with a negative pressure box.

[0014] In a preferred embodiment, a piston plate is arranged inside the negative pressure box. The outer wall of the piston plate is in mutual contact with the inner wall of the negative pressure box. A support rod is fixedly installed at the bottom of the piston plate. The support rod is fixedly installed on the outer wall of the sleeve.

[0015] In a preferred embodiment, drain ports are provided on the inner walls on both sides of the negative pressure box. One side of each of the two drain ports is communicated with a hose, and the two hoses are symmetrically arranged. The bottoms of the two hoses are jointly communicated with a liquid spraying box, and the liquid spraying box is communicated with the top of the upper partition cover. The liquid spraying box is vertically corresponding to the cutting blade.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The present invention is provided with a sleeve cover mechanism and a closing mechanism in cooperation. Two partition covers are synchronously arranged on the outer side of the cutting blade for shearing the anchor cable and at the cutting position for placing the anchor cable. When shearing the anchor cable, the cutting area is closed by the two partition covers being buckled with each other, and a sealing treatment is carried out synchronously to avoid the situation that the sparks generated during the cutting process directly spatter.

[0018] 2. Further assisted by setting a negative pressure circulation mechanism, a liquid storage tank is arranged below the lower partition cover to place the flame retardant liquid. At the same time, a structure capable of sucking the flame retardant liquid is arranged on the upper partition cover to pour the flame retardant liquid from above, that is, spraying the flame retardant liquid at the cutting position of the cutting blade to achieve the flame retardant protection effect. Description of the drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a front view of the present invention.

[0021] Figure 3 It is a partial vertical sectional view of the present invention.

[0022] Figure 4 It is a sectional view of the closing mechanism in the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the negative pressure circulation mechanism in the present invention.

[0024] Figure 6 It is a vertical sectional view of the negative pressure circulation mechanism in the present invention.

[0025] Figure 7 It is a partial sectional view of the negative pressure circulation mechanism in the present invention.

[0026] The reference numerals are: 1, cable anchor body; 2, cutting table; 3, sleeve covering mechanism; 31, support frame; 32, hydraulic telescopic cylinder; 33, sleeve; 34, motor; 35, cutting blade; 36, retaining plate; 37, limiting spring; 38, upper partition cover; 39, lower partition cover; 4, sealing mechanism; 41, supporting plate; 42, pushing roller; 43, supporting spring; 44, first toothed plate; 45, gear; 46, second toothed plate; 47, sealing plate; 5, negative pressure circulation mechanism; 51, liquid leakage pipe; 52, liquid storage tank; 53, liquid supply pipe; 54, negative pressure tank; 55, piston plate; 56, supporting rod; 57, liquid discharge port; 58, hose; 59, liquid spraying box. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1: Refer to the attached drawings of the specification Figures 1 - 7 , a hydraulic-driven sealed circulation type cable anchor cutting device, as Figure 1 and Figure 2 shown, includes a cable anchor body 1. A cutting table 2 is provided at the bottom of the cable anchor body 1, and a sleeve covering mechanism 3 and a sealing mechanism 4 are provided on the top of the cutting table 2;

[0029] As Figure 2 and Figure 3 shown, the sleeve covering mechanism 3 includes a support frame 31 fixedly installed on the top of the cutting table 2. A hydraulic telescopic cylinder 32 is fixedly installed on the top of the support frame 31. The hydraulic telescopic cylinder 32 is arranged vertically downward. A sleeve 33 is provided at the bottom of the hydraulic telescopic cylinder 32. The sleeve 33 is arranged horizontally. The hydraulic telescopic cylinder 32 on the support frame 31 pushes the sleeve 33 downward. A motor 34 is fixedly installed on the inner wall of the sleeve 33. A cutting blade 35 is provided on one side of the motor 34. The cutting blade 35 is arranged vertically, that is, the sleeve 33 drives the motor 34 and the cutting blade 35 to move downward close to the cable anchor body 1, and cutting treatment is carried out through the cutting blade 35.

[0030] As Figure 2 and Figure 3As shown, retention plates 36 are fixedly installed on the outer walls on both sides of the sleeve 33. Limiting springs 37 are fixedly installed on the tops of the two retention plates 36. The two limiting springs 37 are symmetrically arranged with each other. The tops of the two limiting springs 37 are jointly fixedly installed with an upper partition cover 38. The upper partition cover 38 is sleeved on the outer wall of the cutting blade 35. The width of the upper partition cover 38 is greater than the width of the cutting blade 35. The movement of the sleeve 33 drives the retention plates 36 and the limiting springs 37 to move synchronously, that is, drives the upper partition cover 38 to move synchronously with the cutting blade 35.

[0031] As Figure 3 and Figure 4 As shown, a lower partition cover 39 is provided at the bottom of the upper partition cover 38. The lower partition cover 39 is fixedly installed on the top of the cutting table 2. The lower partition cover 39 and the upper partition cover 38 are arranged corresponding to each other. A slot is opened in the middle of the lower partition cover 39. The slot and the cable anchor body 1 are arranged corresponding to each other. The upper partition cover 38 moves downwards and is buckled with the lower partition cover 39 synchronously to cover the cutting area of the cutting blade 35 and the cable anchor body 1.

[0032] As Figure 3 and Figure 4 As shown, the closing mechanism 4 includes a plurality of support plates 41 slidably installed on the top of the cutting table 2. The plurality of support plates 41 are located on both outer sides of the lower partition cover 39. The plurality of support plates 41 are arranged in pairs corresponding to each other. The plurality of support plates 41 are arranged vertically. Push top rollers 42 are rotatably installed on the tops of the plurality of support plates 41;

[0033] The plurality of push top rollers 42 are arranged obliquely. The outer walls of the plurality of push top rollers 42 are mutually attached to the outer wall of the cable anchor body 1. Support springs 43 are fixedly installed at the bottoms of the plurality of support plates 41. The support springs 43 are fixedly installed on the inner wall of the cutting table 2. When the cable anchor body 1 is placed in the slot on the lower partition cover 39, the self-weight of the cable anchor body 1 presses the plurality of push top rollers 42 on both sides to drive the support plates 41 to move downwards. Furthermore, the support plates 41 compress the support springs 43 for lifting and supporting.

[0034] As Figure 4 As shown, first toothed plates 44 are fixedly installed on the outer walls of the plurality of support plates 41. A gear 45 is meshed on one side of the first toothed plate 44. The gear 45 is rotatably installed on the inner wall of the cutting table 2. A second toothed plate 46 is meshed on the other side of the gear 45. The second toothed plate 46 is slidably installed on the inner wall of the cutting table 2. The second toothed plate 46 is arranged vertically. When the support plate 41 moves downwards, it drives the first toothed plate 44 to move downwards synchronously. Furthermore, the first toothed plate 44 pushes the gear 45 to drive the second toothed plate 46 to move upwards;

[0035] A sealing plate 47 is fixedly installed at the top of the second tooth plate 46. The sealing plate 47 is slidably installed on the outer wall of the lower partition cover 39. The sealing plate 47 corresponds to the bottom outer wall of the upper partition cover 38. At this time, multiple second tooth plates 46 on both sides drive the sealing plate 47 to move upward to seal the top outer wall area of the lower partition cover 39. After the upper partition cover 38 and the lower partition cover 39 are fitted, the sealing plates 47 on both sides seal the joint between the upper partition cover 38 and the lower partition cover 39 to avoid gaps.

[0036] During specific implementation, when the anchor cable body 1 is placed in the slot on the lower partition cover 39, the self-weight of the anchor cable body 1 squeezes multiple push rollers 42 on both sides to drive the support plate 41 to move downward. Then, the support plate 41 compresses the support spring 43 for lifting support. During the downward movement of the support plate 41, the first tooth plate 44 is driven to move downward synchronously. Then, the first tooth plate 44 pushes the gear 45 to drive the second tooth plate 46 to move upward. At this time, multiple second tooth plates 46 on both sides drive the sealing plate 47 to move upward to seal the top outer wall area of the lower partition cover 39;

[0037] The hydraulic telescopic cylinder 32 on the support frame 31 pushes the sleeve 33 to move downward, that is, the sleeve 33 drives the motor 34 and the cutting blade 35 to move downward close to the anchor cable body 1. The movement of the sleeve 33 drives the retaining plate 36 and the limiting spring 37 to move synchronously, that is, drives the upper partition cover 38 to move synchronously with the cutting blade 35. The upper partition cover 38 moves downward and is buckled with the lower partition cover 39 synchronously to cover the cutting area of the cutting blade 35 and the anchor cable body 1. At this time, the upper partition cover 38 stops moving;

[0038] The cutting blade 35 continues to be driven to cut the anchor cable body 1, that is, the limiting spring 37 on the upper partition cover 38 is pulled, so that the upper partition cover 38 and the lower partition cover 39 are always buckled under force. At the same time, the sealing plates 47 on both sides of the lower partition cover 39 seal the joint between the upper partition cover 38 and the lower partition cover 39 to avoid gaps and prevent the sparks generated during the cutting process from directly splashing.

[0039] Embodiment 2: In the prior art, there is no structure that can achieve flame retardant effect during the cutting process, that is, there is no structure for spraying flame retardant liquid to extinguish the cutting sparks, and there is also a lack of a structure for recycling the flame retardant liquid, and reasonable protection measures cannot be provided. To solve this problem, the following technical solutions are proposed:

[0040] Such as Figure 5 and Figure 6As shown, a negative pressure circulation mechanism 5 is provided at the bottom of the lower partition cover 39. The negative pressure circulation mechanism 5 includes a liquid leakage pipe 51 connected to the bottom of the lower partition cover 39. The bottom of the liquid leakage pipe 51 is connected to a liquid storage tank 52. The liquid storage tank 52 is fixedly installed at the bottom of the cutting table 2. The flame retardant liquid flowing down in the lower partition cover 39 enters the liquid storage tank 52 through the liquid leakage pipe 51. Two liquid delivery pipes 53 are connected to both sides of the liquid storage tank 52. The two liquid delivery pipes 53 are arranged vertically upward. The tops of the two liquid delivery pipes 53 are jointly connected to a negative pressure box 54. The liquid delivery pipe 53 can suck the flame retardant liquid in the liquid storage tank 52.

[0041] As Figure 5 and Figure 7 shown, a piston plate 55 is provided on the inner wall of the negative pressure box 54. The outer wall of the piston plate 55 fits with the inner wall of the negative pressure box 54. A support rod 56 is fixedly installed at the bottom of the piston plate 55. The support rod 56 is fixedly installed on the outer wall of the sleeve 33. When the sleeve 33 moves downward, it drives the support rod 56 to move downward synchronously. Further, the support rod 56 pulls the piston plate 55 to move downward, and the piston plate 55 makes the area at the top of the negative pressure box 54 generate negative pressure.

[0042] As Figure 5 and Figure 7 shown, drain ports 57 are formed on both inner walls of the negative pressure box 54. One side of the two drain ports 57 is connected to a hose 58. The two hoses 58 are arranged symmetrically with each other. The bottoms of the two hoses 58 are jointly connected to a liquid spraying box 59. The liquid spraying box 59 is connected to the top of the upper partition cover 38. The liquid spraying box 59 is vertically corresponding to the cutting blade 35. The flame retardant liquid sucked in the negative pressure box 54 enters the liquid spraying box 59 through the drain port 57 and then through the hose 58. Thus, the liquid spraying box 59 sprays the flame retardant liquid downward onto the cutting area of the cutting blade 35 and the cable anchor body 1.

[0043] During specific implementation, there is flame retardant liquid retained in the liquid storage tank 52. When the sleeve 33 moves downward, it drives the support rod 56 to move downward synchronously. Further, the support rod 56 pulls the piston plate 55 to move downward, and the piston plate 55 makes the area at the top of the negative pressure box 54 generate negative pressure. That is, the liquid delivery pipe 53 connected to the top sucks the flame retardant liquid in the liquid storage tank 52 and sends it to the negative pressure box 54. After the piston plate 55 moves past the drain port 57, the flame retardant liquid in the negative pressure box 54 can enter the liquid spraying box 59 through the hose 58. And at this time, the negative pressure box 54 and the liquid storage tank 52 form a siphon structure through the liquid delivery pipe 53. Thus, the liquid spraying box 59 continuously sprays the flame retardant liquid downward onto the cutting area of the cutting blade 35 and the cable anchor body 1 to achieve the flame retardant protection effect.

[0044] In summary, two partition covers are synchronously arranged on the outer side of the cutting saw blade for shearing the anchor cable and at the cutting position for placing the anchor cable. During shearing, the cutting area is enclosed by the two partition covers buckling with each other, thus avoiding the direct ejection and splashing of sparks generated during the cutting process. Moreover, a structure capable of sucking the flame retardant liquid is arranged on the partition cover to pour the flame retardant liquid from above, that is, spraying the flame retardant liquid at the cutting position of the cutting saw blade to achieve the flame retardant protection effect.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic-driven sealed circulation type anchor cable cutting device, comprising an anchor cable body (1), characterized in that: A cutting table (2) is provided at the bottom of the anchor cable body (1), and a sleeve mechanism (3) and a closing mechanism (4) are provided at the top of the cutting table (2); The sleeve mechanism (3) includes a support frame (31) fixedly installed at the top of the cutting table (2). A hydraulic telescopic cylinder (32) is fixedly installed at the top of the support frame (31). The hydraulic telescopic cylinder (32) is arranged vertically downward. A sleeve (33) is provided at the bottom of the hydraulic telescopic cylinder (32). The sleeve (33) is arranged horizontally. A motor (34) is fixedly installed on the inner wall of the sleeve (33). A cutting blade (35) is provided on one side of the motor (34). The cutting blade (35) is arranged vertically.

2. The hydraulic drive sealed circulation type cable cutter according to claim 1, characterized in that: Retaining plates (36) are fixedly installed on the outer walls on both sides of the sleeve (33). Limiting springs (37) are fixedly installed at the tops of the two retaining plates (36). The two limiting springs (37) are symmetrically arranged with each other. An upper partition cover (38) is fixedly installed at the tops of the two limiting springs (37). The upper partition cover (38) is sleeved on the outer wall of the cutting blade (35). The width of the upper partition cover (38) is greater than the width of the cutting blade (35).

3. The hydraulic drive sealed circulation type cable cutter according to claim 2, characterized in that: A lower partition cover (39) is provided at the bottom of the upper partition cover (38). The lower partition cover (39) is fixedly installed at the top of the cutting table (2). The lower partition cover (39) corresponds to the upper partition cover (38). A slot is formed in the middle of the lower partition cover (39). The slot corresponds to the anchor cable body (1).

4. The hydraulic drive sealed circulation type cable anchor cutting device according to claim 3, characterized in that: The closing mechanism (4) includes a plurality of support plates (41) slidably installed at the top of the cutting table (2). The plurality of support plates (41) are located on both sides of the outer wall of the lower partition cover (39). The plurality of support plates (41) are arranged in pairs corresponding to each other. The plurality of support plates (41) are arranged vertically. Push rollers (42) are rotatably installed at the tops of the plurality of support plates (41). The plurality of push rollers (42) are arranged obliquely. The outer walls of the plurality of push rollers (42) are in mutual contact with the outer wall of the anchor cable body (1). Support springs (43) are fixedly installed at the bottoms of the plurality of support plates (41). The support springs (43) are fixedly installed on the inner wall of the cutting table (2).

5. The hydraulic drive sealed circulation type anchor cable cutting device according to claim 4, wherein: First toothed plates (44) are fixedly installed on the outer walls of the plurality of support plates (41). A gear (45) is meshed with one side of the first toothed plate (44). The gear (45) is rotatably installed on the inner wall of the cutting table (2). A second toothed plate (46) is meshed with the other side of the gear (45). The second toothed plate (46) is slidably installed on the inner wall of the cutting table (2). The second toothed plate (46) is arranged vertically. A sealing plate (47) is fixedly installed at the top of the second toothed plate (46). The sealing plate (47) is slidably installed on the outer wall of the lower partition cover (39). The sealing plate (47) corresponds to the bottom outer wall of the upper partition cover (38).

6. The hydraulic drive sealed circulation type anchor cable cutting device according to claim 3, characterized in that: A negative pressure circulation mechanism (5) is provided at the bottom of the lower partition cover (39). The negative pressure circulation mechanism (5) includes a liquid leakage pipe (51) connected to the bottom of the lower partition cover (39). The bottom of the liquid leakage pipe (51) is connected to a liquid storage tank (52). The liquid storage tank (52) is fixedly installed at the bottom of the cutting table (2). Both sides of the liquid storage tank (52) are connected to a liquid supply pipe (53). The two liquid supply pipes (53) are arranged vertically upward. The tops of the two liquid supply pipes (53) are jointly connected to a negative pressure box (54).

7. The hydraulic-driven sealed circulation type cable anchor cutting device according to claim 6, wherein: A piston plate (55) is provided on the inner wall of the negative pressure box (54). The outer wall of the piston plate (55) fits with the inner wall of the negative pressure box (54). A support rod (56) is fixedly installed at the bottom of the piston plate (55). The support rod (56) is fixedly installed on the outer wall of the sleeve (33).

8. The hydraulic-driven sealed circulation type cable cutter according to claim 7, characterized in that: Drainage openings (57) are formed in the inner walls on both sides of the negative pressure box (54). One side of each of the two drainage openings (57) is connected to a hose (58). The two hoses (58) are symmetrically arranged. The bottoms of the two hoses (58) are jointly connected to a liquid spraying box (59). The liquid spraying box (59) is connected to the top of the upper partition cover (38). The liquid spraying box (59) is vertically corresponding to the cutting blade (35).