Auxiliary device for municipal pipe well construction and using method thereof

Abstract

The auxiliary device for municipal pipe well construction comprises a base, supporting seats are fixedly connected to the left end and the right end of the base correspondingly, a support is fixedly connected to the tops of the supporting seats, a guide ring is fixedly connected to the inner side of the support, and two symmetrically-distributed rotating seats are fixedly connected to the interior of the support; a winding drum is rotationally connected between the two rotating seats, rotating shafts are fixedly connected to the left end and the right end of the winding drum, the rotating shafts are rotationally connected with the rotating seats through bearings, limiting seats are fixedly connected to the left end and the right end of the support, limiting mechanisms are arranged on the limiting seats, and a positioning mechanism is arranged on the base. The invention relates to an auxiliary device for municipal pipe well construction. The auxiliary device has the characteristics that the overall fixing and using stability of the device is higher, and a safety rope is safer to wind, unwind and use.

Description

Technical fields:

[0001] This invention belongs to the field of construction auxiliary device technology, specifically an auxiliary device for municipal pipe well construction and its usage method. Background technology:

[0002] Municipal utility manholes are an important component of urban underground infrastructure, mainly distributed beneath roads, sidewalks, and green belts. Their core structure consists of a manhole casing, cover, and foundation (commonly made of reinforced concrete, brick, or new composite materials). They serve as crucial nodes for the connection and maintenance of various underground pipelines, including water supply and drainage, gas, electricity, communications, and heating. They provide convenient access for pipeline inspection, dredging, and monitoring, and also allow for pipeline branching, turning, and elevation adjustments. As "underground hubs" ensuring smooth water supply and drainage, stable energy transmission, and efficient information dissemination, their construction quality and daily maintenance directly impact the normal operation of the city and the convenience of residents' lives. The construction of municipal utility manholes requires the assistance of auxiliary devices.

[0003] Utility model patent CN222861035U discloses a municipal public utility manhole construction auxiliary device, belonging to the field of municipal construction equipment technology. It includes: a base, a protective cylinder, a fixing block, a support rod, a connecting rod, a fixed seat, a crossbar, a rotating shaft, a frame, a traction shaft, a drum reel, and a crank. The protective cylinder is installed on the upper end of the base. This utility model can be erected above the manhole opening. By binding a safety rope to the traction shaft of the frame and then winding the safety rope around the drum reel, the frame can rotate on the crossbar of the fixed seat via the rotating shaft. This allows adjustment of the direction of the frame at the lower end of the rotating shaft, facilitating work in different manhole directions. As the construction personnel move, the safety rope on the drum reel is gradually released. By having a person outside the manhole crank the handle, the traction shaft and drum reel can be rotated to wind and retract the safety rope, pulling the construction personnel outward. This assists in quickly lifting personnel from the manhole, effectively improving the safety of underground operations.

[0004] In existing technologies, the overall structure of auxiliary devices is inconvenient for fixed positioning, resulting in insufficient stability and impacting safety. Furthermore, locking the safety rope's position is difficult when deploying or retracting it, limiting its usability. Therefore, there is a need to design an auxiliary device for municipal manhole construction and its usage method. Summary of the Invention: The purpose of this invention is to provide an auxiliary device for municipal manhole construction and its usage method in order to solve the above-mentioned problems, thereby resolving the issues mentioned in the background art.

[0005] To address the above problems, the present invention provides a technical solution: An auxiliary device for municipal manhole construction includes a base, with support seats fixedly connected to both ends of the base. A bracket is fixedly connected to the top of the support seats, and a guide ring is fixedly connected to the inner side of the bracket. Two symmetrically distributed rotating seats are fixedly connected inside the bracket, and a drum is rotatably connected between the two rotating seats. A rotating shaft is fixedly connected to both ends of the drum, and the rotating shaft is rotatably connected to the rotating seats through bearings. Limit seats are fixedly connected to both ends of the bracket, and a limit mechanism is provided on the limit seats. A positioning mechanism is provided on the base.

[0006] Preferably, the limiting mechanism includes a slot, with a slot formed inside the rotating shaft. A retaining ball is movably fitted inside the slot and is movably connected to a rotating seat. A slider is movably fitted outside the retaining ball and is slidably connected to the rotating seat. A spring is fixedly connected to the outside of the slider and is fixedly connected to the rotating seat. A fixing rod is slidably fitted inside the slider and is fixedly connected to the rotating seat. A first spring is provided on the outside of the fixing rod. A rotating column is fixedly connected to the outside of the rotating shaft and is rotatably connected to both the rotating seat and the support. The outside of the rotating column is fixed... The rotating column is rotatably connected to a limiting seat, and the rotating column has multiple annular and evenly distributed limiting grooves inside. A limiting rod is slidably connected inside one of the limiting grooves. The limiting rod is slidably connected to the limiting seat. A connecting rod is slidably sleeved inside the limiting rod. The connecting rod is fixedly connected to the limiting seat. A second spring is provided on the outside of the connecting rod. A push rod is fixedly connected to one end of the limiting rod. The push rod is slidably connected to the limiting seat. A magnetic block is fixedly connected to the other end of the limiting rod. The magnetic block is slidably connected to the limiting seat. A magnet is fixedly connected inside the limiting seat.

[0007] Preferably, there are multiple slots, which are arranged in a ring and evenly distributed inside the rotating shaft. By designing multiple slots, the ball can roll into the slots at different positions.

[0008] Preferably, one end of the first spring is fixedly connected to the slider, and the other end of the first spring is fixedly connected to the rotating seat. By designing the first spring, the force of the first spring can be applied to the slider.

[0009] Preferably, one end of the second spring is fixedly connected to the limiting rod, and the other end of the second spring is fixedly connected to the limiting seat. By designing the second spring, the force of the second spring can be applied to the limiting rod.

[0010] Preferably, the positioning mechanism includes a fixed base, with multiple annular and evenly distributed fixed seats fixedly connected to the outer side of the base. A connecting seat is slidably sleeved inside the fixed base, and a cylinder is fixedly connected to the top of the connecting seat. A screw is rotatably connected to the inside of the cylinder via a bearing, and a throttle is fixedly connected to the top of the screw. A positioning cone is threadedly connected to the outer side of the screw, and the positioning cone is slidably connected to the cylinder and the connecting seat. A connecting block is slidably sleeved inside the positioning cone, and the connecting block is fixedly connected to the connecting seat. Multiple evenly distributed arc-shaped grooves are formed inside the fixed base, and arc-shaped blocks are slidably connected inside the arc-shaped grooves. The arc-shaped blocks are slidably connected to the connecting seat. A slide rod is fixedly connected to the outer side of the arc-shaped block, and the slide rod is slidably connected to the connecting seat. A third spring is provided on the outer side of the slide rod. A guide block is fixedly connected to the outer side of the connecting seat, and the guide block is slidably connected to the fixed base. A guide rod is slidably sleeved inside the guide block, and the guide rod is fixedly connected to the fixed base.

[0011] Preferably, one end of the third spring is fixedly connected to the arc-shaped block, and the other end of the third spring is fixedly connected to the connecting seat. By designing the third spring, the force of the third spring can be applied to the arc-shaped block.

[0012] A method for using an auxiliary device for municipal pipe well construction, comprising the following steps: Step 1: First, move the base to the well to be constructed. When it is necessary to position the device, simply turn the handle. The handle will drive the screw to rotate, causing the positioning cone to make a threaded movement. The positioning cone will move vertically along the connecting block. The positioning cone will extend out of the connecting seat and finally insert into the ground. At this point, the entire structure can be fixed and installed for use. Step 2: When it is necessary to adjust the position of the positioning cone, pull the connecting seat horizontally. The connecting seat will drive the guide block to slide along the guide rod. At the same time, the connecting seat will drive the arc block to move. The arc block will slide along the arc surface of the arc groove. The arc block will be squeezed and slide into the inside of the connecting seat. The arc block will drive the slide rod to move. The arc block will squeeze the third spring, which can separate the arc block from the arc groove. After the connecting seat is pulled out, the arc block can be pushed into the arc groove of another position under the elastic action of the third spring. At this time, the relative position of the connecting seat and the fixed seat can be adjusted to facilitate the adjustment of the positioning cone's positioning position. Step 3: The safety rope is tied to the drum for use. When the handle is turned, it drives the rotating column to rotate, which in turn drives the shaft and drum to rotate, allowing the safety rope to be wound up or down. When the shaft rotates, the groove inside the shaft will squeeze and push the locking ball to roll outward. The locking ball will drive the slider to move, and the slider will squeeze the elastic ball. At the same time, the slider can slide along the fixed rod to squeeze the first spring, which can separate the locking ball from the groove. After the drum and shaft have finished rotating, the elasticity of the elastic ball and the first spring will give the slider a counter-pushing force, which can push the locking ball into the groove in another position. At this time, the drum can be assisted in limiting its rotation, and a certain resistance can be applied to the rotation of the drum, which can reduce the winding and unwinding speed of the safety rope and improve safety. Step 4: When it is necessary to lock the position of the drum, push the push rod downwards. The push rod drives the limit rod to move, and the limit rod drives the magnetic block to move. When the magnetic block separates from the magnet, the elasticity of the compressed second spring will give the limit rod a downward counterforce, which can push the limit rod into the limit groove. At this time, the rotating column, shaft and drum in the stationary state can be limited and locked, which can prevent the drum from rotating randomly and affecting stability.

[0013] The beneficial effects of this invention are as follows: This invention relates to an auxiliary device for municipal manhole construction, which features higher overall stability during fixed use and safer use of the safety rope. In specific applications, compared with traditional auxiliary devices for municipal manhole construction, this auxiliary device for municipal manhole construction has the following beneficial effects: Firstly, the design of the drum allows for the winding and unwinding of the safety rope. The guide ring guides the movement of the safety rope. With the engagement of the locking ball and the locking groove, a certain resistance is applied to the rotation of the shaft, which controls the rotation speed of the shaft to prevent the winding and unwinding speed from affecting safety. Furthermore, the engagement of the limiting rod and the limiting groove allows for the limiting and locking of the drum position, which can fix the position of the safety rope after winding and unwinding, thereby improving the stability of the safety rope and the drum during use. Secondly, by designing the threaded engagement between the screw and the positioning cone, the screw can be rotated when the handle is turned, thus enabling the positioning cone to move. The movement of the positioning cone allows it to be inserted into the ground to fix the overall structure, which improves the safety of the device. Furthermore, the position of the positioning cone can be adjusted arbitrarily to avoid positions where the positioning cone cannot be positioned, thus improving the adaptability of the device. Attached image description: For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0014] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A partial three-dimensional sectional view of the structure; Figure 3 For the present invention Figure 2 Enlarged view of point A; Figure 4 For the present invention Figure 2 Enlarged view of point B; Figure 5 For the present invention Figure 2 A front sectional view of the cylinder; Figure 6 For the present invention Figure 2 Top sectional view of the connector.

[0015] In the diagram: 1. Base; 2. Support seat; 3. Bracket; 4. Guide ring; 5. Rotating seat; 6. Drum; 7. Shaft; 8. Limiting mechanism; 9. Positioning mechanism; 10. Limiting seat; 81. Slot; 82. Ball catcher; 83. Slider; 84. Ball bouncer; 85. Fixed rod; 86. First spring; 87. Rotating column; 88. Limiting groove; 89. Limiting rod; 891. Connecting rod; 892. Second spring; 893. Push rod; 894. Magnetic block; 895. Magnet; 896. Handle; 91. Fixed seat; 92. Connecting seat; 93. Cylinder body; 94. Screw; 95. Turning handle; 96. Positioning cone; 97. Connecting block; 98. Arc groove; 99. Arc block; 991. Sliding rod; 992. Third spring; 993. Guide block; 994. Guide rod. Detailed implementation method: like Figure 1-6 As shown, the specific implementation adopts the following technical solution: Example: An auxiliary device for municipal manhole construction includes a base 1, with support seats 2 fixedly connected to both ends of the base 1. A bracket 3 is fixedly connected to the top of the support seat 2. A guide ring 4 is fixedly connected to the inner side of the bracket 3. Two symmetrically distributed rotating seats 5 are fixedly connected inside the bracket 3. A drum 6 is rotatably connected between the two rotating seats 5. A rotating shaft 7 is fixedly connected to both ends of the drum 6. The rotating shaft 7 is rotatably connected to the rotating seats 5 through bearings. Limiting seats 10 are fixedly connected to both ends of the bracket 3. A limiting mechanism 8 is provided on the limiting seat 10. A positioning mechanism 9 is provided on the base 1.

[0016] The limiting mechanism 8 includes a slot 81. The rotating shaft 7 has a slot 81 inside, and a ball 82 is movably fitted inside the slot 81. There are multiple slots 81, which are arranged in a ring and evenly distributed inside the rotating shaft 7. By designing multiple slots 81, the ball 82 can roll into different positions within the slots 81. The ball 82 is movably connected to the rotating seat 5. A slider 83 is movably fitted to the outside of the ball 82. The slider 83 is slidably connected to the rotating seat 5, and its outer side is fixedly connected. A bouncing ball 84 is fixedly connected to a rotating seat 5. A fixed rod 85 is slidably sleeved inside the slider 83 and fixedly connected to the rotating seat 5. A first spring 86 is provided on the outside of the fixed rod 85. One end of the first spring 86 is fixedly connected to the slider 83, and the other end is fixedly connected to the rotating seat 5. By designing the first spring 86, the force of the first spring 86 can act on the slider 83. A rotating column 87 is fixedly connected to the outside of the rotating shaft 7. The rotating column 87 is respectively connected to the rotating... The base 5 and the bracket 3 are rotatably connected. A handle 896 is fixedly connected to the outside of the rotating column 87. The rotating column 87 is rotatably connected to the limiting seat 10. The rotating column 87 has multiple annular and evenly distributed limiting grooves 88 inside. A limiting rod 89 is slidably connected inside one of the limiting grooves 88. The limiting rod 89 is slidably connected to the limiting seat 10. A connecting rod 891 is slidably sleeved inside the limiting rod 89. The connecting rod 891 is fixedly connected to the limiting seat 10. A second spring 892 is provided on the outside of the connecting rod 891. One end of the second spring 892 is fixedly connected to the limiting rod 89, and the other end of the second spring 892 is fixedly connected to the limiting seat 10. By designing the second spring 892, the force of the second spring 892 can act on the limiting rod 89. One end of the limiting rod 89 is fixedly connected to a push rod 893, and the push rod 893 is slidably connected to the limiting seat 10. The other end of the limiting rod 89 is fixedly connected to a magnetic block 894, and the magnetic block 894 is slidably connected to the limiting seat 10. A magnet 895 is fixedly connected inside the limiting seat 10.

[0017] The positioning mechanism 9 includes a fixed base 91. Multiple annularly and evenly distributed fixed bases 91 are fixedly connected to the outer side of the base 1. A connecting base 92 is slidably sleeved inside the fixed base 91. A cylindrical body 93 is fixedly connected to the top of the connecting base 92. A screw 94 is rotatably connected to the inside of the cylindrical body 93 via a bearing. A handle 95 is fixedly connected to the top of the screw 94. A positioning cone 96 is threadedly connected to the outer side of the screw 94. The positioning cone 96 is slidably connected to the cylindrical body 93 and to the connecting base 92. A connecting block 97 is slidably sleeved inside the positioning cone 96 and fixedly connected to the connecting base 92. Multiple evenly distributed arc-shaped grooves 98 are formed inside the fixed base 91. An arc-shaped block 99 is slidably connected inside the arc-shaped groove 98. The arc-shaped block 99 is slidably connected to the connecting seat 92. A slide rod 991 is fixedly connected to the outside of the arc-shaped block 99. The slide rod 991 is slidably connected to the connecting seat 92. A third spring 992 is provided on the outside of the slide rod 991. One end of the third spring 992 is fixedly connected to the arc-shaped block 99, and the other end of the third spring 992 is fixedly connected to the connecting seat 92. By designing the third spring 992, the force of the third spring 992 can act on the arc-shaped block 99. A guide block 993 is fixedly connected to the outside of the connecting seat 92. The guide block 993 is slidably connected to the fixed seat 91. A guide rod 994 is slidably sleeved inside the guide block 993. The guide rod 994 is fixedly connected to the fixed seat 91.

[0018] A method for using an auxiliary device for municipal pipe well construction, comprising the following steps: Step 1: First, move the base 1 to the well to be constructed. When it is necessary to position the device, directly turn the handle 95. The handle 95 drives the screw 94 to rotate, causing the positioning cone 96 to make threaded movement. The positioning cone 96 will move vertically along the connecting block 97. The positioning cone 96 will extend out of the connecting seat 92 and finally insert into the ground. At this time, the overall structure can be fixed and installed for use. Step 2: When it is necessary to adjust the position of the positioning cone 96, pull the connecting seat 92 horizontally. The connecting seat 92 will drive the guide block 993 to slide along the guide rod 994. At the same time, the connecting seat 92 will drive the arc block 99 to move. The arc block 99 will slide along the arc surface of the arc groove 98. The arc block 99 will be squeezed and slide into the connecting seat 92. The arc block 99 will drive the slide rod 991 to move. The arc block 99 will squeeze the third spring 992, which can separate the arc block 99 from the arc groove 98. After the connecting seat 92 is pulled out, under the elastic action of the third spring 992, the arc block 99 can be pushed into the arc groove 98 in another position. At this time, the relative position of the connecting seat 92 and the fixed seat 91 can be adjusted to facilitate the adjustment of the positioning position of the positioning cone 96. Step 3: The safety rope is tied to the drum 6 for use. When the handle 896 is turned, the handle 896 can drive the rotating column 87 to rotate. The rotating column 87 drives the rotating shaft 7 and the drum 6 to rotate, so that the safety rope can be wound up and unwound. When the rotating shaft 7 rotates, the groove 81 inside the rotating shaft 7 will squeeze and push the locking ball 82 to roll outward. The locking ball 82 will drive the slider 83 to move. The slider 83 squeezes the ball 84. At the same time, the slider 83 can slide along the fixed rod 85 to squeeze the first spring 86, which can separate the locking ball 82 from the groove 81. After the drum 6 and the rotating shaft 7 have finished rotating, the elasticity of the ball 84 and the first spring 86 will give the slider 83 a counter-push force, which can push the locking ball 82 into the groove 81 in another position. At this time, the drum 6 can be assisted in limiting the rotation of the drum 6, and a certain resistance can be applied to the rotation of the drum 6, which can reduce the winding and unwinding speed of the safety rope and improve safety. Step 4: When it is necessary to lock the position of the drum 6, push the push rod 893 downward. The push rod 893 drives the limit rod 89 to move, and the limit rod 89 drives the magnetic block 894 to move. When the magnetic block 894 separates from the magnet 895, the elastic action of the compressed second spring 892 will give the limit rod 89 a downward counter-force, which can push the limit rod 89 into the limit groove 88. At this time, the rotating column 87, the rotating shaft 7 and the drum 6 in the stationary state can be limited and locked, which can prevent the drum 6 from rotating randomly and affecting stability.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for municipal pipe well construction, comprising a base (1), characterized in that: The base (1) is fixedly connected to the left and right ends of the support seat (2), the top of the support seat (2) is fixedly connected to the bracket (3), the inner side of the bracket (3) is fixedly connected to the guide ring (4), the inside of the bracket (3) is fixedly connected to two symmetrically distributed rotating seats (5), the two rotating seats (5) are rotatably connected to a drum (6), the left and right ends of the drum (6) are fixedly connected to the rotating shaft (7), the rotating shaft (7) and the rotating seat (5) are rotatably connected by bearings, the left and right ends of the bracket (3) are fixedly connected to the limit seat (10), the limit seat (10) is provided with a limit mechanism (8), and the base (1) is provided with a positioning mechanism (9).

2. The auxiliary device for municipal pipe well construction according to claim 1, characterized in that: The limiting mechanism (8) includes a slot (81). The slot (81) is provided inside the rotating shaft (7). A retaining ball (82) is movably sleeved inside the slot (81). The retaining ball (82) is movably connected to the rotating seat (5). A slider (83) is movably sleeved outside the retaining ball (82). The slider (83) is slidably connected to the rotating seat (5). A bouncing ball (84) is fixedly connected to the outside of the slider (83). The bouncing ball (84) is fixedly connected to the rotating seat (5). A fixing rod (85) is slidably sleeved inside the slider (83). The fixing rod (85) is fixedly connected to the rotating seat (5). A first spring (86) is provided on the outside of the fixing rod (85). A rotating column (87) is fixedly connected to the outside of the rotating shaft (7). The rotating column (87) is rotatably connected to the rotating seat (5) and the bracket (3) respectively. A handle is fixedly connected to the outside of the rotating column (87). 896), the rotating column (87) is rotatably connected to the limiting seat (10). The rotating column (87) has multiple annular and evenly distributed limiting grooves (88) inside. One of the limiting grooves (88) is slidably connected to a limiting rod (89). The limiting rod (89) is slidably connected to the limiting seat (10). A connecting rod (891) is slidably sleeved inside the limiting rod (89). The connecting rod (891) is fixedly connected to the limiting seat (10). A second spring (892) is provided on the outside of the connecting rod (891). A push rod (893) is fixedly connected to one end of the limiting rod (89). The push rod (893) is slidably connected to the limiting seat (10). A magnetic block (894) is fixedly connected to the other end of the limiting rod (89). The magnetic block (894) is slidably connected to the limiting seat (10). A magnet (895) is fixedly connected inside the limiting seat (10).

3. The auxiliary device for municipal pipe well construction according to claim 2, characterized in that: The number of the slots (81) is multiple, and the multiple slots (81) are evenly distributed in a ring shape inside the rotating shaft (7).

4. The auxiliary device for municipal pipe well construction according to claim 2, characterized in that: One end of the first spring (86) is fixedly connected to the slider (83), and the other end of the first spring (86) is fixedly connected to the rotating seat (5).

5. An auxiliary device for municipal pipe well construction according to claim 2, characterized in that: One end of the second spring (892) is fixedly connected to the limiting rod (89), and the other end of the second spring (892) is fixedly connected to the limiting seat (10).

6. The auxiliary device for municipal pipe well construction according to claim 1, characterized in that: The positioning mechanism (9) includes a fixed seat (91). Multiple annular and evenly distributed fixed seats (91) are fixedly connected to the outer side of the base (1). A connecting seat (92) is slidably sleeved inside the fixed seat (91). A cylinder (93) is fixedly connected to the top of the connecting seat (92). A screw (94) is rotatably connected inside the cylinder (93) via a bearing. A handle (95) is fixedly connected to the top of the screw (94). A positioning cone (96) is threadedly connected to the outer side of the screw (94). The positioning cone (96) is slidably connected to the cylinder (93) and to the connecting seat (92). A connecting block (97) is slidably sleeved inside the positioning cone (96). The connecting block (97) is slidably sleeved to the connecting seat (92). The connecting seat (92) is fixedly connected. The fixed seat (91) has multiple evenly distributed arc-shaped grooves (98) inside. An arc-shaped block (99) is slidably connected inside the arc-shaped groove (98). The arc-shaped block (99) is slidably connected to the connecting seat (92). A slide rod (991) is fixedly connected to the outside of the arc-shaped block (99). The slide rod (991) is slidably connected to the connecting seat (92). A third spring (992) is provided on the outside of the slide rod (991). A guide block (993) is fixedly connected to the outside of the connecting seat (92). The guide block (993) is slidably connected to the fixed seat (91). A guide rod (994) is slidably sleeved inside the guide block (993). The guide rod (994) is fixedly connected to the fixed seat (91).

7. An auxiliary device for municipal pipe well construction according to claim 6, characterized in that: One end of the third spring (992) is fixedly connected to the arc block (99), and the other end of the third spring (992) is fixedly connected to the connecting seat (92).

8. The method of using an auxiliary device for municipal pipe well construction according to any one of claims 1-7, characterized in that: The specific steps include: Step 1: First, move the base (1) to the well to be constructed. When it is necessary to position the device, turn the handle (95) directly. The handle (95) drives the screw (94) to rotate, so that the positioning cone (96) makes a threaded movement. The positioning cone (96) will move vertically along the connecting block (97). The positioning cone (96) will extend out of the connecting seat (92) and finally insert into the ground. At this time, the overall structure can be fixed and installed for use. Step 2: When it is necessary to adjust the position of the positioning cone (96), pull the connecting seat (92) horizontally. The connecting seat (92) will drive the guide block (993) to slide along the guide rod (994). At the same time, the connecting seat (92) will drive the arc block (99) to move. The arc block (99) will slide along the arc surface of the arc groove (98). The arc block (99) will be squeezed and slide into the connecting seat (92). The arc block (99) will drive the slide rod (991) to move. The arc block (99) will squeeze the third spring (992), which can separate the arc block (99) from the arc groove (98). After the connecting seat (92) is pulled out, the arc block (99) can be pushed into the arc groove (98) at another position under the elastic action of the third spring (992). At this time, the relative position of the connecting seat (92) and the fixed seat (91) can be adjusted to facilitate the adjustment of the positioning position of the positioning cone (96). Step 3: The safety rope is tied to the drum (6) for use. When the handle (896) is turned, the handle (896) can drive the rotating column (87) to rotate. The rotating column (87) drives the rotating shaft (7) and the drum (6) to rotate, so that the safety rope can be wound up and unwound. When the rotating shaft (7) rotates, the groove (81) inside the rotating shaft (7) will squeeze and push the locking ball (82) to roll outward. The locking ball (82) will drive and push the slider (83) to move. The slider (83) squeezes the ball (84). At the same time, the slider (83) The first spring (86) can be squeezed along the fixed rod (85), which can separate the ball (82) from the slot (81). After the drum (6) and the shaft (7) have rotated, the elastic action of the ball (84) and the first spring (86) will give the slider (83) a counter-push force, which can push the ball (82) into the slot (81) in another position. At this time, the drum (6) can be assisted in limiting the movement, and a certain resistance can be applied to the rotation of the drum (6), which can reduce the speed of the safety rope winding and release and improve safety. Step 4: When it is necessary to lock the position of the drum (6), push the push rod (893) downward. The push rod (893) drives the limit rod (89) to move. The limit rod (89) will drive the magnetic block (894) to move. When the magnetic block (894) separates from the magnet (895), the limit rod (894) will be pushed downward by the elastic action of the compressed second spring (892). The limit rod (89) can be pushed into the limit groove (88). At this time, the rotating column (87), the rotating shaft (7) and the drum (6) in the static state can be locked, which can prevent the random rotation of the drum (6) from affecting the stability.

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