Mechanical reliable braking device for disc type cable drum

Abstract

The invention relates to a disc type cable drum mechanical reliable braking device which comprises a main machine frame, a drum and an electromagnetic block type brake, a side machine frame is arranged on the left side of the main machine frame, a uniform wiring mechanism is installed on the side machine frame, and the drum is installed above the main machine frame. The uniform wiring mechanism is matched with the winding drum to realize uniform winding and wiring of the cable on the winding drum; a power assembly is arranged on one side of the front of the winding drum and drives the winding drum to rotate, and cable winding operation is completed. An electromagnetic block type brake is arranged at the axis of the front surface of the winding drum, and the winding drum is quickly braked through the electromagnetic block type brake; the braking device has the advantages of reasonable structure, simplicity, practicability, good braking effect, safety and reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of cable reels, and in particular relates to a mechanical reliable braking device for a disc type cable reel. Background Art

[0002] The disc-type cable reel achieves the purpose of collecting cables to save space through the rotation of the drum. The existing disc-type cable reels have the following problems: first, the cables cannot be evenly reeled up during use, resulting in chaotic cable reeling and low utilization rate; second, the driving mode of the existing disc-type cable reel can be motor-driven rotation or human-driven rotation, but a braking device is usually not designed to help the reel to brake, and its stopping mode adopts self-weight suspension or motor deceleration and power off or human power to block the rotation of the reel, etc. The braking effect of the above braking method is not good, and the safety is not high, which is prone to injuries and other accidents; to a certain extent, it will also cause cable scratches, etc., which will lead to cable damage and seriously affect its service life; therefore, it is very necessary to provide a mechanical and reliable braking device for a disc-type cable reel with a reasonable structure, simple and practical, good braking effect, safety and reliability. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a mechanical reliable braking device for a disc type cable reel which has a reasonable structure, is simple and practical, has a good braking effect, and is safe and reliable.

[0004] The object of the present invention is achieved as follows: a mechanical reliable braking device for a disc cable reel, which includes a main frame, a reel and an electromagnetic block brake, a side frame is arranged on the left side of the main frame, a uniform wiring mechanism is installed on the side frame, and a reel is installed above the main frame, and the cable is evenly wound and wired on the reel through the cooperation of the uniform wiring mechanism and the reel; a power component is arranged on one side of the front of the reel, and the reel is driven to rotate by the power component to complete the cable winding operation; an electromagnetic block brake is arranged at the axis center in front of the reel, and the rapid braking operation of the reel is achieved through the electromagnetic block brake.

[0005] The uniform wiring mechanism includes a reciprocating screw installed on the side frame, both ends of the reciprocating screw are connected to the inner wall of the side frame through a bearing seat, and a uniform distribution disk is arranged outside the reciprocating screw, and the uniform distribution disk is installed with the reciprocating screw through a wire sleeve.

[0006] The winding roller of the reel is provided with a wire fixing slope groove for fixing the connecting cable head, and a main shaft is installed inside the reel. A brake sleeve is installed on one end of the main shaft corresponding to the power component, and the brake sleeve is located inside the electromagnetic block brake. A rotating shaft pin is fixedly connected to the end of the main shaft, and the rotating shaft pin is installed inside the split bearing sleeve. The split bearing sleeve is installed on the main frame through an end shaft bracket.

[0007] One end of the main shaft close to the power assembly is connected to the reel through a transmission disc, and an inner gear disc is installed on the outer periphery of the transmission disc.

[0008] An upper shell plate and a lower shell plate are arranged in front of the inner gear plate, the upper shell plate is a major arc structure, and the lower shell plate is a minor arc structure, and the upper shell plate and the lower shell plate are buckled and connected with the outer end of the reel; an opening for the main shaft to pass through is opened in the middle of the upper shell plate, the left side of the lower front of the upper shell plate is fixedly connected to the main frame through a V-shaped fixing plate, and the right side is fixedly connected to the main frame through a protective shell sleeved on the outside of the power component; the lower shell plate is fixedly connected to the main frame through a mounting plate.

[0009] The power assembly comprises a bracket installed on the inner side of the main frame, a driver located inside the protective shell is installed in front of the bracket, and a driving gear meshing with the inner gear disc is connected to the output shaft end of the driver.

[0010] The electromagnetic block brake includes a base, a group of brake arms are symmetrically arranged above the base, brake shoes are arranged on the inner sides of the brake arms, the brake shoes are movably connected to the brake arms through pins, the lower outer sides of the brake shoes are connected to the brake arms through positioning screws, and brake pads are arranged on the inner sides of the brake shoes.

[0011] A screw spring seat is provided on the outer side below the brake arm, a brake spring assembly is provided above the brake arm, a pull rod is provided inside the brake spring assembly, an electromagnet is connected to the left end of the pull rod, the lower end of the brake arm is connected to the base through a pin shaft, and the upper end is connected to the pull rod through a pin shaft.

[0012] A bearing disk sleeved on the main shaft is arranged at the back of the reel, a shaft sleeve is sleeved on the outside of one end of the main shaft extending out of the bearing disk, a mechanical brake is installed on the outside of the shaft sleeve, and a tensioner is connected to the lower end of the mechanical brake. The braking operation of the reel is achieved through the cooperation of the tensioner, the mechanical brake and the shaft sleeve.

[0013] The mechanical brake includes an L-shaped plate, a vertical plate is arranged above one side of the L-shaped plate, a brake belt is connected to the upper end of the vertical plate, a connecting plate is installed at the end of the brake belt after it is wrapped around the shaft sleeve, a group of compression springs are arranged below the connecting plate, the lower ends of the compression springs are connected to brake rods, and the brake rods are connected to the tensioner.

[0014] The beneficial effects of the present invention are as follows: the present invention is a reliable mechanical braking device for a disc-type cable reel. During use, the present invention drives the reel to rotate through a power component to complete the cable winding operation on the reel. At the same time, the uniform wiring mechanism cooperates with the reel to achieve uniform cable winding on the reel, so that the reel can evenly reel the cable, avoiding the situation where the cable is reeled in a chaotic manner, thereby greatly improving the utilization rate of the reel. When a braking operation is required, it is only necessary to turn off the power component and start the electromagnetic block brake at the same time. Through a set of brake shoes, the main shaft and brake sleeve of the reel are in contact and friction, and the sliding friction can be adjusted to be greater than the inertia generated by the dead weight of the reel and the cable. The driving force is smaller than the force used to pull the cable, so that the drum stops when the pulling force stops or the power component stops driving the power, and a brake pad is arranged on the inner side of the brake shoe, which greatly improves the wear resistance and protects the brake shoe on the one hand, and improves the friction force on the other hand to ensure excellent braking effect; at the same time, the brake belt of the mechanical brake can be driven by the tensioner to brake the other end of the main shaft, so as to achieve synchronous braking of the two shaft ends of the drum, greatly shorten the braking time, improve the braking effect, and make the drum safer and more reliable when in use; the present invention has the advantages of reasonable structure, simple and practical, good braking effect, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the present invention.

[0016] Figure 2 For the present invention Figure 1 A three-dimensional diagram of part of the structure.

[0017] Figure 3 For the present invention Figure 2 Exploded diagram.

[0018] Figure 4 It is a schematic structural diagram of the electromagnetic block brake of the present invention.

[0019] Figure 5 It is a rear view of the present invention.

[0020] Figure 6 For the present invention Figure 5 A three-dimensional diagram of part of the structure.

[0021] Figure 7 It is a schematic structural diagram of the mechanical brake of the present invention.

[0022] In the figure: 1, main frame 2, side frame 3, uniform wiring mechanism 31, reciprocating screw 32, bearing seat 33, uniform distribution plate 34, wire sleeve 4, reel 41, fixed line slope groove 42, main shaft 43, brake sleeve 44, end shaft bracket 45, split bearing sleeve 46, rotating shaft pin 47, transmission plate 48, inner gear plate 49, upper shell plate 401, lower shell plate 402, opening 403, V-shaped fixing plate 404, protective shell 405, mounting plate 5, power group Part 51, bracket 52, driver 53, drive gear 6, electromagnetic block brake 61, base 62, brake arm 63, brake shoe 631, brake pad 64, pin 65, positioning screw 66, screw spring seat 67, brake spring assembly 68, pull rod 69, electromagnet 7, bearing plate 8, mechanical brake 81, L-shaped plate 82, vertical plate 83, brake belt 84, connecting plate 85, compression spring 86, brake rod 9, tensioner 10, sleeve. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings. Example 1

[0024] like Figure 1-7 As shown, a mechanical reliable braking device for a disc cable reel comprises a main frame 1, a reel 4 and an electromagnetic block brake 6, wherein a side frame 2 is arranged on the left side of the main frame 1, a uniform wiring mechanism 3 is installed on the side frame 2, and a reel 4 is installed above the main frame 1, and the cable is uniformly wound and wired on the reel 4 through the cooperation of the uniform wiring mechanism 3 and the reel 4; a power assembly 5 is arranged on one side in front of the reel 4, and the reel 4 is driven to rotate by the power assembly 5 to complete the cable winding operation; an electromagnetic block brake 6 is arranged at the axis center in front of the reel 4, and the rapid braking operation of the reel 4 is achieved through the electromagnetic block brake 6.

[0025] The uniform wiring mechanism 3 includes a reciprocating screw 31 installed on the side frame 2, both ends of the reciprocating screw 31 are connected to the inner wall of the side frame 2 through a bearing seat 32, and a uniform distribution disk 33 is arranged outside the reciprocating screw 31, and the uniform distribution disk 33 is installed with the reciprocating screw 31 through a wire sleeve 34.

[0026] In this embodiment, the working principle of the uniform wiring mechanism is as follows: since the uniform distribution disk is installed through the wire sleeve and the reciprocating screw, when the reciprocating screw is driven to rotate, the reciprocating screw drives the uniform distribution disk to move along the reciprocating screw through the wire sleeve, and the rotation direction of the reciprocating screw is changed, so that the moving direction of the uniform distribution disk can be realized, and then the uniform distribution disk can be reciprocated on the reciprocating screw, cooperating with the reel to achieve the purpose of uniform wiring.

[0027] The winding roller of the reel 4 is provided with a wire fixing slope groove 41 for fixing the connecting cable head, and a main shaft 42 is installed inside the reel 4. A brake sleeve 43 is installed on one end of the main shaft 42 corresponding to the power component 5, and the brake sleeve 43 is located inside the electromagnetic block brake 6. A rotating shaft pin 46 is fixedly connected to the end of the main shaft 42, and the rotating shaft pin 46 is installed inside the split bearing sleeve 45. The split bearing sleeve 45 is installed on the main frame 1 through the end shaft bracket 44.

[0028] One end of the main shaft 42 close to the power assembly 5 is connected to the reel 4 through a transmission disc 47 , and an inner gear disc 48 is installed on the outer periphery of the transmission disc 47 .

[0029] An upper shell plate 49 and a lower shell plate 401 are arranged in front of the inner gear plate 48, the upper shell plate 49 is a major arc structure, and the lower shell plate 401 is a minor arc structure, and the upper shell plate 49 and the lower shell plate 401 are buckled and connected with the outer end of the reel 4; an opening 402 for the main shaft 42 to pass through is opened in the middle of the upper shell plate 49, and the left side of the lower front of the upper shell plate 49 is fixedly connected to the main frame 1 through a V-shaped fixing plate 403, and the right side is fixedly connected to the main frame 1 through a protective shell 404 sleeved on the outside of the power component 5; the lower shell plate 401 is fixedly connected to the main frame 1 through a mounting plate 405.

[0030] The power assembly 5 includes a bracket 51 installed on the inner side of the main frame 1 , a driver 52 located inside the protective shell 404 is installed in front of the bracket 51 , and a driving gear 53 meshing with the inner gear disc 48 is connected to the output shaft end of the driver 52 .

[0031] In this embodiment, the working principle of the power assembly and the reel is: first, the cable is fixed on the reel through the fixed wire ramp groove, and then the driver is started. The driver drives the inner gear disk to rotate through the driving gear, thereby realizing the overall rotation of the reel and realizing the winding operation of the cable.

[0032] The electromagnetic block brake 6 includes a base 61, a group of brake arms 62 are symmetrically arranged above the base 61, brake shoes 63 are arranged on the inner sides of the brake arms 62, the brake shoes 63 are movably connected to the brake arms 62 through pins 64, the outer sides and lower sides of the brake shoes 63 are connected to the brake arms 62 through positioning screws 65, and brake pads 631 are arranged on the inner sides of the brake shoes 63.

[0033] A screw spring seat 66 is provided on the outer side below the brake arm 62, a brake spring assembly 67 is provided above the brake arm 62, a pull rod 68 is provided inside the brake spring assembly 67, and an electromagnet 69 is connected to the left end of the pull rod 68. The lower end of the brake arm 62 is connected to the base 61 through a pin shaft 64, and the upper end is connected to the pull rod 68 through a pin shaft 64.

[0034] In this embodiment, the working principle of the electromagnetic block brake is as follows: when it is necessary to brake the reel, first cut off the power assembly and start the electromagnet at the same time. The electromagnet drives the pull rod in the brake spring assembly to move, and the pull rod pulls the brake arm. The brake arm cooperates with the brake shoe to achieve the braking effect on the brake sleeve and the main shaft, driving the reel to stop moving. In actual use, the angle of the brake shoe can be adjusted by the positioning screw to facilitate better fit to the brake sleeve and improve the braking effect. During the movement of the brake arm, the screw spring seat can, on the one hand, prevent the brake arm from excessive movement, resulting in serious wear of the brake shoe, and on the other hand, can provide a certain buffering force during the braking process of the brake shoe on the brake sleeve and the main shaft, and can also adjust the movement stroke of the brake arm by adjusting the screw spring seat, which can be adaptively adjusted according to the actual braking distance, greatly improving practicality.

[0035] The present invention is a reliable mechanical braking device for a disc-type cable reel. During use, the present invention drives the reel 4 to rotate through the power component 5 to complete the cable winding operation on the reel 4. At the same time, the uniform wiring mechanism 3 cooperates with the reel 4 to achieve uniform cable winding on the reel 4, so that the reel 4 can evenly reel the cable, avoiding the situation where the cable is reeled in a chaotic manner, and greatly improving the utilization rate of the reel 4. When a braking operation is required, it is only necessary to turn off the power component 5 and start the electromagnetic block brake 6 at the same time, and a group of brake shoes 63 are in contact and friction with the main shaft 42 and the brake sleeve 43 of the reel 4, and the sliding friction force can be adjusted to be greater than the inertial driving force generated by the dead weight of the reel 3 and the cable. , which is smaller than the force used to pull the cable, so that the drum 4 stops when the pulling force stops or the power assembly 5 stops driving the power, and a brake lining 631 is arranged on the inner side of the brake shoe 63, which greatly improves the wear resistance and protects the brake shoe 63 on the one hand, and improves the friction force to ensure a good braking effect on the other hand; at the same time, the brake belt 83 of the mechanical brake 8 can be driven by the tensioner 9 to brake the other end of the main shaft 42, so as to achieve synchronous braking of the two shaft ends of the drum 3, greatly shorten the braking time, improve the braking effect, and make the drum safer and more reliable when in use; the present invention has the advantages of reasonable structure, simple and practical, good braking effect, safety and reliability. Example 2

[0036] like Figure 1-7As shown, a mechanical reliable braking device for a disc cable reel comprises a main frame 1, a reel 4 and an electromagnetic block brake 6, wherein a side frame 2 is arranged on the left side of the main frame 1, a uniform wiring mechanism 3 is installed on the side frame 2, and a reel 4 is installed above the main frame 1, and the cable is uniformly wound and wired on the reel 4 through the cooperation of the uniform wiring mechanism 3 and the reel 4; a power assembly 5 is arranged on one side in front of the reel 4, and the reel 4 is driven to rotate by the power assembly 5 to complete the cable winding operation; an electromagnetic block brake 6 is arranged at the axis center in front of the reel 4, and the rapid braking operation of the reel 4 is achieved through the electromagnetic block brake 6.

[0037] The uniform wiring mechanism 3 includes a reciprocating screw 31 installed on the side frame 2, both ends of the reciprocating screw 31 are connected to the inner wall of the side frame 2 through a bearing seat 32, and a uniform distribution disk 33 is arranged outside the reciprocating screw 31, and the uniform distribution disk 33 is installed with the reciprocating screw 31 through a wire sleeve 34.

[0038] The winding roller of the reel 4 is provided with a wire fixing slope groove 41 for fixing the connecting cable head, and a main shaft 42 is installed inside the reel 4. A brake sleeve 43 is installed on one end of the main shaft 42 corresponding to the power component 5, and the brake sleeve 43 is located inside the electromagnetic block brake 6. A rotating shaft pin 46 is fixedly connected to the end of the main shaft 42, and the rotating shaft pin 46 is installed inside the split bearing sleeve 45. The split bearing sleeve 45 is installed on the main frame 1 through the end shaft bracket 44.

[0039] One end of the main shaft 42 close to the power assembly 5 is connected to the reel 4 through a transmission disc 47 , and an inner gear disc 48 is installed on the outer periphery of the transmission disc 47 .

[0040] An upper shell plate 49 and a lower shell plate 401 are arranged in front of the inner gear plate 48, the upper shell plate 49 is a major arc structure, and the lower shell plate 401 is a minor arc structure, and the upper shell plate 49 and the lower shell plate 401 are buckled and connected with the outer end of the reel 4; an opening 402 for the main shaft 42 to pass through is opened in the middle of the upper shell plate 49, and the left side of the lower front of the upper shell plate 49 is fixedly connected to the main frame 1 through a V-shaped fixing plate 403, and the right side is fixedly connected to the main frame 1 through a protective shell 404 sleeved on the outside of the power component 5; the lower shell plate 401 is fixedly connected to the main frame 1 through a mounting plate 405.

[0041] The power assembly 5 includes a bracket 51 installed on the inner side of the main frame 1 , a driver 52 located inside the protective shell 404 is installed in front of the bracket 51 , and a driving gear 53 meshing with the inner gear disc 48 is connected to the output shaft end of the driver 52 .

[0042] A bearing disk 7 sleeved on a main shaft 42 is arranged at the rear of the reel 4, and a shaft sleeve 10 is sleeved on the outside of one end of the main shaft 42 extending out of the bearing disk 7, and a mechanical brake 8 is installed on the outside of the shaft sleeve 10. A tensioner 9 is connected to the lower end of the mechanical brake 8, and the braking operation of the reel 4 is achieved through the cooperation of the tensioner 9, the mechanical brake 8 and the shaft sleeve 10.

[0043] The mechanical brake 8 includes an L-shaped plate 81, a vertical plate 82 is arranged above one side of the L-shaped plate 81, a brake belt 83 is connected to the upper end of the vertical plate 82, a connecting plate 84 is installed at the end of the brake belt 83 after it is wrapped around the sleeve 10, a group of compression springs 85 are arranged below the connecting plate 84, and the lower ends of the compression springs 85 are connected to brake rods 86, and the brake rods 86 are connected to the tensioner 9.

[0044] In this embodiment, the working principle of the mechanical brake is as follows: start the tensioner, the tensioner pulls down the compression spring through the brake rod, and the compression spring drives the brake belt to move through the connecting plate, so that the brake belt can be tightened and exert force on the sleeve and the main shaft, forcing the sleeve and the main shaft to stop moving, realizing the braking function, and cooperating with the electromagnetic block brake to realize synchronous braking of both ends of the main shaft, greatly improving the braking effect, shortening the braking time, and improving safety and reliability.

[0045] The present invention is a reliable mechanical braking device for a disc-type cable reel. During use, the present invention drives the reel 4 to rotate through the power component 5 to complete the cable winding operation on the reel 4. At the same time, the uniform wiring mechanism 3 cooperates with the reel 4 to achieve uniform cable winding on the reel 4, so that the reel 4 can evenly reel the cable, avoiding the situation where the cable is reeled in a chaotic manner, and greatly improving the utilization rate of the reel 4. When a braking operation is required, it is only necessary to turn off the power component 5 and start the electromagnetic block brake 6 at the same time, and a group of brake shoes 63 are in contact and friction with the main shaft 42 and the brake sleeve 43 of the reel 4, and the sliding friction force can be adjusted to be greater than the inertial driving force generated by the dead weight of the reel 3 and the cable. , which is smaller than the force used to pull the cable, so that the drum 4 stops when the pulling force stops or the power assembly 5 stops driving the power, and a brake lining 631 is arranged on the inner side of the brake shoe 63, which greatly improves the wear resistance and protects the brake shoe 63 on the one hand, and improves the friction force to ensure a good braking effect on the other hand; at the same time, the brake belt 83 of the mechanical brake 8 can be driven by the tensioner 9 to brake the other end of the main shaft 42, so as to achieve synchronous braking of the two shaft ends of the drum 3, greatly shorten the braking time, improve the braking effect, and make the drum safer and more reliable when in use; the present invention has the advantages of reasonable structure, simple and practical, good braking effect, safety and reliability.

Claims

1. A mechanical reliable braking device for a disc cable reel, comprising a main frame, a reel and an electromagnetic block brake, characterized in that: A side frame is arranged on the left side of the main frame, a uniform wiring mechanism is installed on the side frame, a reel is installed above the main frame, and the cable is uniformly wound and wired on the reel through the cooperation of the uniform wiring mechanism and the reel; a power assembly is arranged on the front side of the reel, and the reel is driven to rotate by the power assembly to complete the cable winding operation; an electromagnetic block brake is arranged at the axis center in front of the reel, and the rapid braking operation of the reel is achieved through the electromagnetic block brake.

2. A reliable mechanical brake device for a cable drum according to claim 1, characterized in that: The uniform wiring mechanism includes a reciprocating screw installed on the side frame, both ends of the reciprocating screw are connected to the inner wall of the side frame through a bearing seat, and a uniform distribution disk is arranged outside the reciprocating screw, and the uniform distribution disk is installed with the reciprocating screw through a wire sleeve.

3. A reliable mechanical brake device for a cable drum according to claim 2, characterized in that: The winding roller of the reel is provided with a wire fixing slope groove for fixing the connecting cable head, and a main shaft is installed inside the reel. A brake sleeve is installed on one end of the main shaft corresponding to the power component, and the brake sleeve is located inside the electromagnetic block brake. A rotating shaft pin is fixedly connected to the end of the main shaft, and the rotating shaft pin is installed inside the split bearing sleeve. The split bearing sleeve is installed on the main frame through an end shaft bracket.

4. A reliable mechanical brake device for a cable drum as claimed in claim 3, characterized in that: One end of the main shaft close to the power assembly is connected to the reel through a transmission disc, and an inner gear disc is installed on the outer periphery of the transmission disc.

5. A reliable mechanical brake device for a cable drum according to claim 4, characterized in that: An upper shell plate and a lower shell plate are arranged in front of the inner gear plate, the upper shell plate is a major arc structure, and the lower shell plate is a minor arc structure, and the upper shell plate and the lower shell plate are buckled and connected with the outer end of the reel; an opening for the main shaft to pass through is opened in the middle of the upper shell plate, the left side of the lower front of the upper shell plate is fixedly connected to the main frame through a V-shaped fixing plate, and the right side is fixedly connected to the main frame through a protective shell sleeved on the outside of the power component; the lower shell plate is fixedly connected to the main frame through a mounting plate.

6. A reliable mechanical brake device for a cable drum according to claim 5, characterized in that: The power assembly comprises a bracket installed on the inner side of the main frame, a driver located inside the protective shell is installed in front of the bracket, and a driving gear meshing with the inner gear disc is connected to the output shaft end of the driver.

7. A reliable mechanical brake device for a cable drum as claimed in claim 3, characterized in that: The electromagnetic block brake includes a base, a group of brake arms are symmetrically arranged above the base, brake shoes are arranged on the inner sides of the brake arms, the brake shoes are movably connected to the brake arms through pins, the lower outer sides of the brake shoes are connected to the brake arms through positioning screws, and brake pads are arranged on the inner sides of the brake shoes.

8. A reliable mechanical brake device for a cable drum according to claim 7, characterized in that: A screw spring seat is provided on the outer side below the brake arm, a brake spring assembly is provided above the brake arm, a pull rod is provided inside the brake spring assembly, an electromagnet is connected to the left end of the pull rod, the lower end of the brake arm is connected to the base through a pin shaft, and the upper end is connected to the pull rod through a pin shaft.

9. A reliable mechanical brake device for a cable drum as claimed in claim 3, characterized in that: A bearing disk sleeved on the main shaft is arranged at the back of the reel, a shaft sleeve is sleeved on the outside of one end of the main shaft extending out of the bearing disk, a mechanical brake is installed on the outside of the shaft sleeve, and a tensioner is connected to the lower end of the mechanical brake. The braking operation of the reel is achieved through the cooperation of the tensioner, the mechanical brake and the shaft sleeve.

10. A reliable mechanical brake device for a cable drum according to claim 9, characterized in that: The mechanical brake includes an L-shaped plate, a vertical plate is arranged above one side of the L-shaped plate, a brake belt is connected to the upper end of the vertical plate, a connecting plate is installed at the end of the brake belt after it is wrapped around the shaft sleeve, a group of compression springs are arranged below the connecting plate, the lower ends of the compression springs are connected to brake rods, and the brake rods are connected to the tensioner.

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