A precast pipe climbing hoisting platform and method for pipe well

Abstract

The present application relates to the technical fields of building engineering, more particularly, it is a kind of precast pipe in pipe well's climbing hoisting platform and method, structure includes main load truss, hydraulic lifting mechanism and climbing mechanism, hydraulic lifting mechanism and climbing mechanism are all set on the wall of pipe well, main load truss is movably connected with climbing mechanism along vertical direction, main load truss is connected with hydraulic lifting mechanism, and hydraulic lifting mechanism drives main load truss to move along climbing mechanism in vertical direction;It also includes walking track, transverse frame and electric hoist, walking track is arranged in main load truss, transverse frame is movably connected with walking track along horizontal direction, the transverse direction of transverse frame is the same direction as the transverse direction of electric hoist, through the double transverse movement of transverse frame and electric hoist, the hoisting range of climbing hoisting platform is no longer limited to the transverse movement range of electric hoist on walking track, thereby the hoisting range of climbing hoisting platform is improved, so that it can be hoisted in a large range.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a climbing hoisting platform and method for precast pipes in pipe wells. Background Technology

[0002] Precast pipes are pipes that are pre-processed and manufactured in production projects. Compared with traditional pipes, precast pipes have advantages such as shorter cycle time and faster installation. Furthermore, precast pipes can be processed more precisely in the factory, and the materials and processes are more uniform. They are less affected by factors such as the site environment and weather, which can significantly shorten the construction cycle. Therefore, precast pipes are also particularly suitable for the construction of air conditioning water pipe wells.

[0003] After prefabricated pipes are completed and transported to the construction site, they still need to be hoisted and installed on-site using appropriate equipment. In the prior art, Chinese patent CN205894715U discloses a semi-automatic self-climbing hoisting mechanism for lightweight steel structures under a closed structure. When hoisting prefabricated pipes, a similar climbing hoisting mechanism can be used. This climbing hoisting mechanism typically includes a main load-bearing truss, a hydraulic jacking mechanism, a climbing guide rail, a traveling track, and an electric hoist. The main load-bearing truss is vertically movable on the wall via the climbing guide rail, and then driven by the hydraulic jacking mechanism to move along the climbing guide rail, thereby achieving self-climbing of the main load-bearing truss. The traveling track is located at the bottom of the main load-bearing truss, and the electric hoist is movably mounted on the traveling track. The electric hoist is used to lift objects; the object is lifted by the lateral movement of the electric hoist on the traveling track.

[0004] However, the lifting range of the aforementioned climbing hoisting mechanism is limited by the lateral movement range of the electric hoist on the travel track, resulting in a small lifting range and making it difficult to carry out large-scale hoisting. Summary of the Invention

[0005] In order to increase the lifting range of the climbing hoisting platform and enable it to carry out large-scale hoisting, this application provides a climbing hoisting platform and method for precast pipes in pipe wells.

[0006] In a first aspect, the present invention provides a climbing and hoisting platform for prefabricated pipes in a well, employing the following technical solution:

[0007] A climbing and hoisting platform for precast pipes in a manhole includes a main load-bearing truss, a hydraulic jacking mechanism, and a climbing mechanism. Both the hydraulic jacking mechanism and the climbing mechanism are mounted on the wall of the manhole. The main load-bearing truss is vertically connected to the climbing mechanism, and the main load-bearing truss is also connected to the hydraulic jacking mechanism. The hydraulic jacking mechanism drives the main load-bearing truss to move vertically along the climbing mechanism. The platform also includes a traveling track, a transverse frame, and an electric hoist. The traveling track is fixedly mounted on the main load-bearing truss, and the transverse frame is horizontally connected to the traveling track. The transverse movement direction of the transverse frame is the same as the transverse movement direction of the electric hoist.

[0008] Preferably, the traveling track includes an upper frame, and a slide rail is provided at the bottom of the upper frame along the length direction. Each slide rail includes a fixed part and a movable part. The fixed part is fixedly connected to the upper frame, and the movable part is slidably connected to the fixed part. The movable part is used to fix the transverse frame.

[0009] Preferably, the transverse frame is provided with a drive assembly, which includes a mounting box, rollers, a timing belt, and a motor. The mounting box is fixedly mounted on the transverse frame. Multiple rollers are provided, each rotating around a vertical axis within the mounting box. The timing belt connects the multiple rollers. The mounting box has a slot on the side facing the travel track. The circumferential surfaces of the multiple rollers extend out of the mounting box through the slot, and the circumferential surfaces of the multiple rollers make rolling contact with the upper frame of the travel track. The motor is fixedly mounted at the bottom of the mounting box, and the output shaft of the motor extends into the mounting box. The output shaft of the motor is coaxially and fixedly connected to one of the rollers.

[0010] Preferably, both ends of the walking track are provided with hanging frames, and elastic telescopic rods are movably hung on the hanging frames. The upper end of the elastic telescopic rod is hinged to the hanging frame, and the lower end of the elastic telescopic rod is hinged to a connecting joint. When the elastic telescopic rod swings down naturally, the connecting joint at the lower end of the elastic telescopic rod is located on the lateral movement path of the transverse frame. Both ends of the transverse frame are provided with connecting rods, which are used to connect with the connecting joint at the lower end of the elastic telescopic rod along the lateral movement direction.

[0011] Preferably, the elastic telescopic rod includes a sleeve and an inner rod. One end of the inner rod extends into the sleeve to achieve a telescopic connection. The upper end of the sleeve is hinged to the hanging frame as the upper end of the elastic telescopic rod. The lower end of the inner rod is hinged to the connecting joint as the lower end of the elastic telescopic rod. A first spring is fixedly connected between the sleeve and the inner rod. A limit block is provided on the side wall of the inner rod. The limit block is used to abut the lower end of the sleeve during the retraction of the inner rod.

[0012] Preferably, the hanging frame is fixedly provided with a connecting frame, and a lifting block is provided in the connecting frame. A second spring is fixedly connected between the top of the lifting block and the top of the connecting frame. The second spring is used to provide an elastic restoring force for the lifting block to automatically return to its original position. The upper end of the elastic telescopic rod is hinged to the lifting block.

[0013] Preferably, the electric hoist includes a lifting rope and a hook, a weight sensor is provided between the lifting rope and the hook, and an alarm is also included. The weight sensor and the alarm are electrically connected. When the weight sensed by the weight sensor exceeds the threshold set by the alarm, the alarm will automatically sound and the entire unit will stop.

[0014] Preferably, an infrared distance sensor is installed on the top of the hanging frame, and a reflector is installed on the lifting block. The infrared sensor and the reflector are arranged opposite each other in the vertical direction. A controller is connected between the infrared sensor and the alarm. When the infrared sensor senses that the distance between itself and the reflector is increasing, the threshold of the alarm is lowered. When the infrared sensor senses that the distance between itself and the reflector is decreasing, the threshold of the alarm is raised.

[0015] Preferably, the hanging frame is fixedly provided with a clamping frame, and a clamping opening is provided on one side of the clamping frame. The opening of the clamping opening faces the elastic telescopic rod, and the clamping opening is located on the path of the elastic telescopic rod swinging inward. Elastic rubber layers are provided on both horizontally opposite surfaces of the clamping opening, and the minimum distance between the two elastic rubber layers is less than the diameter of the inner rod of the elastic telescopic rod.

[0016] Secondly, the present invention provides a method for the climbing and hoisting of prefabricated pipes in a well, employing the following technical solution:

[0017] A method for hoisting and installing precast pipes in a manhole includes the following steps:

[0018] S1: Using a hydraulic jacking mechanism, the main load-bearing truss is raised to the required hoisting height;

[0019] S2: The transverse frame moves outward, causing the spring telescopic rod to swing outward and lengthen. The spring telescopic rod causes the lifting block and reflector to descend. The infrared distance sensor detects that the distance between it and the reflector has increased and controls the threshold of the alarm to decrease.

[0020] S3: The electric hoist moves laterally into position and hoists the precast pipe onto the hook of the electric hoist;

[0021] S4: Use the lateral movement of the lateral movement frame and electric hoist to lift the precast pipe to the designated position and start the installation work.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. When using the climbing hoisting platform of the present invention to hoist precast pipes in a manhole, the hoisting range of the climbing hoisting platform is no longer limited by the lateral movement range of the electric hoist on the travel track through the dual lateral movement of the transverse frame and the electric hoist, thereby increasing the hoisting range of the climbing hoisting platform and enabling it to perform large-scale hoisting.

[0024] 2. The transverse frame moves laterally relative to the travel track by the rolling of the rollers. As the transverse frame gradually moves outward, the number of roller components on the transverse frame that are in contact with the upper frame of the travel track decreases, which gradually reduces the rolling force. This causes the transverse frame's transverse speed to slow down, thus achieving automatic deceleration when the transverse frame moves outward, improving safety. Conversely, it can also achieve automatic acceleration when the transverse frame moves inward, making it easier to retrieve.

[0025] 3. When the transverse frame moves outward, the elastic telescopic rod can provide diagonal tension to the outer end of the transverse frame, thereby improving the load-bearing capacity of the transverse frame after the transverse frame moves outward. As the transverse frame gradually moves outward, the elastic telescopic rod gradually extends, causing the elastic force to gradually increase, thereby increasing the diagonal tension provided by the elastic telescopic rod to meet the load-bearing requirements after the transverse frame gradually moves outward.

[0026] 4. As the lower end of the elastic telescopic rod connects with the transverse frame and swings outward, the upper end of the elastic telescopic rod rotates while driving the lifting block to descend. Through the elastic forces of the first and second springs, the elastic diagonal tension that the elastic telescopic rod can provide is increased.

[0027] 5. When the weight sensed by the weight sensor exceeds the threshold set by the alarm, indicating an overload, the alarm will automatically sound and the entire unit will stop, improving safety. In addition, when the transverse frame is moved outward and the precast pipe is hoisted using an electric hoist, the overall load-bearing capacity of the main load-bearing truss will be reduced. In this case, lowering the alarm threshold can further improve the safety of the climbing hoisting platform. When the transverse frame is not moved outward, the overall load-bearing capacity of the main load-bearing truss will be increased. In this case, raising the alarm threshold can improve the hoisting capacity of the climbing hoisting platform. Attached Figure Description

[0028] Figure 1 This is an overall structural diagram of the climbing and hoisting platform in the embodiments of this application;

[0029] Figure 2 This is a partial structural diagram of the climbing hoisting platform in an embodiment of this application;

[0030] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0032] Figure 5 yes Figure 2 A magnified view of a section at point C;

[0033] Figure 6 This is a schematic diagram of the structure between the traveling track and the transverse frame in an embodiment of this application;

[0034] Figure 7 This is a schematic diagram of the drive assembly of the transverse frame in an embodiment of this application.

[0035] Explanation of reference numerals in the attached drawings: 1. Main load-bearing truss; 2. Climbing mechanism; 3. Traveling track; 31. Upper frame; 32. Slide rail; 4. Horizontal moving frame; 41. Mounting box; 42. Roller; 43. Synchronous belt; 44. Motor; 45. Connecting rod; 5. Electric hoist; 6. Hanging frame; 7. Elastic telescopic rod; 71. Sleeve; 72. Inner rod; 73. Connecting joint; 74. Limiting block; 8. Clamping frame; 81. Elastic rubber layer; 9. Connecting frame; 91. Guide rod; 92. Lifting block; 93. Second spring; 101. Infrared distance sensor; 102. Reflector. Detailed Implementation

[0036] The following will be combined with the appendix Figure 1-7 The present invention will be further illustrated by the embodiments.

[0037] This embodiment discloses a climbing and hoisting platform for prefabricated pipes in a well.

[0038] Reference Figures 1 to 5The precast pipe climbing hoisting platform in the pipe shaft includes a main load-bearing truss 1, a hydraulic jacking mechanism, and a climbing mechanism 2. Both the hydraulic jacking mechanism and the climbing mechanism 2 are mounted on the wall of the pipe shaft. The main load-bearing truss 1 and the climbing mechanism 2 are vertically connected, allowing the main load-bearing truss 1 to be vertically movable on the wall of the shaft via the climbing mechanism 2. The main load-bearing truss 1 is also connected to the hydraulic jacking mechanism, which drives the main load-bearing truss 1 to move vertically along the climbing mechanism 2. The climbing hoisting platform of this invention also includes a traveling track 3, a transverse frame 4, and an electric hoist 5. The traveling track 3 is fixedly mounted at the bottom of the main load-bearing truss 1, and the transverse frame 4 is horizontally connected to the traveling track 3, allowing the transverse frame 4 to be horizontally movable at the bottom of the main load-bearing truss 1. Furthermore, the electric hoist 5 is movably connected to the horizontally moving frame 4, allowing the electric hoist 5 to be movably positioned at the bottom of the horizontally moving frame 4, with the horizontal movement direction of the horizontally moving frame 4 being the same as that of the electric hoist 5. Through this configuration, when using the climbing hoisting platform of the present invention to hoist precast pipes within a manhole, the dual horizontal movement of the horizontally moving frame 4 and the electric hoist 5 frees the hoisting range of the climbing hoisting platform from being limited by the horizontal movement range of the electric hoist 5 on the travel track 3, thereby increasing the hoisting range of the climbing hoisting platform and enabling it to perform large-scale hoisting operations.

[0039] Reference Figure 2 and Figure 6 The traveling track 3 includes an upper frame 31, which is rectangular in shape and horizontally fixed to the bottom of the main load-bearing truss 1, allowing the traveling track 3 to climb as the main load-bearing truss 1 rises. Two parallel slide rails 32 are provided at the bottom of the upper frame 31, both extending along its length. Each slide rail 32 includes a fixed part and a movable part. The fixed part is fixedly connected to the bottom of the upper frame 31, while the movable part is slidably connected to the fixed part. The movable part is used to fix a transverse frame 4 below the traveling track 3, allowing the transverse frame 4 to move laterally along the traveling track 3.

[0040] Reference Figure 2 and Figure 7The transverse frame 4 is a rectangular frame, and its top surface is fixedly connected to the movable part of the slide rail 32 of the traveling track 3. Furthermore, a drive assembly is provided on the long side of the top of the transverse frame 4 to drive its lateral movement along the traveling track 3. The drive assembly includes a mounting box 41, rollers 42, a synchronous belt 43, and a motor 44. The mounting box 41 is fixedly mounted on the long side of the top of the transverse frame 4, and its top extends to one side of the upper frame 31 of the traveling track 3. Multiple rollers 42 are provided, each rotating around a vertical axis within the mounting box 41. The synchronous belt 43 connects the multiple rollers 42, enabling them to rotate synchronously. A slot is formed on the side of the mounting box 41 facing the upper frame 31 of the traveling track 3. The circumferential surfaces of the multiple rollers 42 extend out of the mounting box 41 through the slot, and the circumferential surfaces of the multiple rollers 42 extending out of the slot all roll in contact with one side of the upper frame 31 of the traveling track 3. The motor 44 is fixedly mounted at the bottom of the mounting box 41, with its output shaft extending into the box. The output shaft is coaxially and fixedly connected to one of the rollers 42. When the transverse frame 4 needs to move laterally on the travel track 3, the motor 44 first drives one of the rollers 42 to rotate. This roller then drives all the rollers 42 to rotate via the synchronous belt 43. The rolling of the rollers 42 against the side wall of the upper frame 31 of the travel track 3 causes the transverse frame 4 to move laterally relative to the track 3. Furthermore, as the transverse frame 4 gradually moves outward, the number of rollers 42 in contact with the upper frame 31 of the travel track 3 decreases, gradually reducing the rolling force and slowing down the transverse movement speed. This achieves automatic deceleration when the transverse frame 4 moves outward, improving safety. Conversely, it also achieves automatic acceleration when the transverse frame 4 moves inward, facilitating retrieval. In other embodiments, the roller 42 and timing belt 43 can also be replaced with sprockets and chains, as long as the same driving function can be achieved.

[0041] Reference Figures 2 to 4At both ends of the walking track 3, there are hanging frames 6. The hanging frames 6 are rectangular and vertically arranged. The bottom of the hanging frames 6 is fixedly connected to the upper frame 31 of the walking track 3. An elastic telescopic rod 7 is movably hung on the hanging frames 6. Specifically, the upper end of the elastic telescopic rod 7 is hinged to the hanging frame 6. The hinge axis of the upper end of the elastic telescopic rod 7 is a horizontal axis and is perpendicular to the lateral movement direction of the transverse frame 4. The lower end of the elastic telescopic rod 7 is hinged to a connecting joint 73. When the elastic telescopic rod 7 swings down naturally, the connecting joint 73 at the lower end of the elastic telescopic rod 7 is located on the lateral movement path of the transverse frame 4. Correspondingly, the transverse frame 4 is provided with connecting rods 45 at both ends along its length, and the connecting joint 73 is provided with connecting holes for the connecting rods 45 to pass through laterally. During the transverse movement of the transverse frame 4, the connecting rods 45 pass through the connecting holes into the connecting joint 73 to achieve connection. During the transverse movement of the transverse frame 4, the connecting rods 45 leave the connecting holes to achieve separation. That is, the connecting rods 45 are used to connect with the connecting joint 73 at the lower end of the elastic telescopic rod 7 along the transverse movement direction, so that the transverse frame 4 can drive the elastic telescopic rod 7 to swing and stretch the elastic telescopic rod 7 during the transverse movement of the transverse frame 4. Conversely, during the transverse movement of the transverse frame 4, the elastic telescopic rod 7 automatically swings down under the action of gravity and gradually shortens. The purpose of setting the above-mentioned elastic telescopic rod 7 is that when the transverse frame 4 moves outward, the elastic telescopic rod 7 can provide diagonal tension to the outer end of the transverse frame 4, thereby improving the load-bearing capacity of the transverse frame 4 after the transverse frame 4 moves outward. As the transverse frame 4 gradually moves outward, the elastic telescopic rod 7 gradually extends, thereby increasing the elastic force and thus increasing the diagonal tension provided by the elastic telescopic rod 7 to meet the load-bearing requirements of the transverse frame 4 after it gradually moves outward.

[0042] Reference Figures 2 to 4The elastic telescopic rod 7 includes a sleeve 71 and an inner rod 72. One end of the inner rod 72 extends into the sleeve 71 to achieve telescopic connection. The sleeve 71 is located above the inner rod 72. The upper end of the sleeve 71 is hinged to the hanging frame 6 as the upper end of the elastic telescopic rod 7. The lower end of the inner rod 72 is hinged to a connector 73 as the lower end of the elastic telescopic rod 7. A first spring is fixedly connected between the inner end face of the upper end of the sleeve 71 and the upper end face of the inner rod 72, so that the elastic telescopic rod 7 can achieve elastic telescopic movement through the first spring. Furthermore, a limit block 74 is provided on the side wall of the inner rod 72. The limit block 74 is used to abut against the lower end of the sleeve 71 during the retraction of the inner rod 72, thereby limiting the minimum length of the elastic telescopic end, thus ensuring that the connector 73 at the lower end of the elastic telescopic rod 7 is on the lateral movement path of the transverse frame 4 after retraction. In addition, a clamping frame 8 is fixedly installed at the bottom of the hanging frame 6. A clamping opening is provided on one side of the clamping frame 8, facing the outward swing direction of the elastic telescopic rod 7 and located on the path of the elastic telescopic rod 7 swinging inward. Elastic rubber layers 81 are provided on two horizontally opposite surfaces of the clamping opening, and the minimum distance between the two elastic rubber layers 81 is less than the diameter of the inner rod 72 of the elastic telescopic rod 7. By setting the clamping frame 8 and providing elastic rubber layers 81 on the clamping opening of the clamping frame 8, when the elastic telescopic rod 7 swings downward, the elastic telescopic rod 7 can enter the clamping opening of the clamping frame 8 under the action of gravity. Through the elasticity and friction of the elastic rubber layers 81, the elastic telescopic rod 7 maintains good stability after swinging downward, preventing the elastic telescopic rod 7 from easily shaking.

[0043] Reference Figures 2 to 4 A connecting frame 9 is fixedly installed on the bottom surface of the top of the hanging frame 6. The connecting frame 9 is rectangular and contains a vertical guide rod 91. A lifting block 92 is also installed within the connecting frame 9, passing through the guide rod 91, which guides the lifting block 92 during its movement. A second spring 93 is fixedly connected between the top of the lifting block 92 and the top of the connecting frame 9. The second spring 93 provides an elastic restoring force for the lifting block 92 to automatically return to its original position. The upper end of the elastic telescopic rod 7 is hinged to the lifting block 92 of the hanging frame 6. When the lower end of the elastic telescopic rod 7 aligns with the transverse frame 4 and swings outward, the upper end of the elastic telescopic rod 7 rotates while simultaneously causing the lifting block 92 to descend. The elastic force provided by the elastic telescopic rod 7 is enhanced by the elastic forces of the first spring and the second spring 93.

[0044] Reference Figure 1 The electric hoist 5 includes a lifting rope and a hook, and a weight sensor is installed between the lifting rope and the hook. The climbing hoisting platform of the present invention is also equipped with an alarm. The weight sensor and the alarm are electrically connected. When the weight sensed by the weight sensor exceeds the threshold set by the alarm, i.e. an overload occurs, the alarm will automatically sound and the entire unit will stop.

[0045] Reference Figure 2 and Figure 5 An infrared distance sensor 101 is installed on the top of the hanging frame 6, and a reflector 102 is installed on the lifting block 92. The infrared sensor and the reflector 102 are arranged vertically opposite each other. The infrared sensor determines the lifting status of the lifting block 92 by monitoring the distance between itself and the reflector 102. Furthermore, a controller is connected between the infrared sensor and the alarm. When the infrared sensor senses an increase in the distance between itself and the reflector 102, the alarm threshold is lowered; when the infrared sensor senses a decrease in the distance between itself and the reflector 102, the alarm threshold is raised. The purpose is that when the transverse frame 4 is moved outward and the electric hoist 5 is used to lift the precast pipe, the overall load-bearing capacity of the main load-bearing truss 1 is reduced. Lowering the alarm threshold at this time can improve the safety of the climbing hoisting platform. Conversely, when the transverse frame 4 is not moved outward, the overall load-bearing capacity of the main load-bearing truss 1 is increased. Raising the alarm threshold at this time can improve the lifting capacity of the climbing hoisting platform.

[0046] This embodiment also discloses a method for climbing and hoisting precast pipes in a well, using the aforementioned climbing and hoisting platform.

[0047] The method for hoisting and installing precast pipes in a manhole includes the following steps:

[0048] S1: Using a hydraulic jacking mechanism, the main load-bearing truss 1 is raised to the required hoisting height;

[0049] S2: The transverse frame 4 moves outward, causing the spring telescopic rod to swing outward and lengthen. The spring telescopic rod causes the lifting block 92 and the reflector 102 to descend. The infrared distance sensor 101 detects that the distance between it and the reflector 102 has increased and controls the threshold of the alarm to decrease.

[0050] S3: The electric hoist 5 moves laterally into position and hoists the precast pipe onto the hook of the electric hoist 5;

[0051] S4: Use the lateral movement of the transverse frame 4 and the electric hoist 5 to lift the precast pipe to the designated position and start the installation work.

[0052] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A climbing and hoisting platform for prefabricated pipes in a well, characterized in that: The system includes a main load-bearing truss (1), a hydraulic jacking mechanism, and a climbing mechanism (2). Both the hydraulic jacking mechanism and the climbing mechanism (2) are installed on the wall of the manhole. The main load-bearing truss (1) and the climbing mechanism (2) are movably connected in the vertical direction. The main load-bearing truss (1) is connected to the hydraulic jacking mechanism. The hydraulic jacking mechanism drives the main load-bearing truss (1) to move vertically along the climbing mechanism (2). The system also includes a traveling track (3), a transverse frame (4), and an electric hoist (5). The traveling track (3) is fixedly installed on the main load-bearing truss (1). The transverse frame (4) is movably connected to the traveling track (3) in the horizontal direction. The transverse movement direction of the transverse frame (4) is the same as the transverse movement direction of the electric hoist (5). Both ends of the walking track (3) are provided with hanging frames (6), and elastic telescopic rods (7) are movably hung on the hanging frames (6). The upper end of the elastic telescopic rods (7) is hinged to the hanging frames (6), and the lower end of the elastic telescopic rods (7) is hinged to a connector (73). When the elastic telescopic rods (7) swing down naturally, the connector (73) at the lower end of the elastic telescopic rods (7) is located on the lateral movement path of the transverse frame (4). Both ends of the transverse frame (4) are provided with connecting rods (45), which are used to connect with the connector (73) at the lower end of the elastic telescopic rods (7) along the lateral movement direction.

2. The precast pipe climbing and hoisting platform in a pipe well according to claim 1, characterized in that: The walking track (3) includes an upper frame (31), and a slide rail (32) is provided at the bottom of the upper frame (31) along the length direction. Each slide rail (32) includes a fixed part and a movable part. The fixed part is fixedly connected to the upper frame (31), and the movable part is slidably connected to the fixed part. The movable part is used to fix the transverse frame (4).

3. The precast pipe climbing and hoisting platform in a pipe well according to claim 1, characterized in that: The transverse frame (4) is equipped with a drive assembly, which includes a mounting box (41), rollers (42), a timing belt (43), and a motor (44). The mounting box (41) is fixedly mounted on the transverse frame (4). Multiple rollers (42) are provided, and all rollers (42) are rotatably mounted in the mounting box (41) around a vertical axis. The timing belt (43) connects the multiple rollers (42). The mounting box (41) faces the traveling track (3). A strip-shaped groove is provided, and the circumferential surfaces of multiple rollers (42) extend out of the mounting box (41) through the strip-shaped groove. The circumferential surfaces of multiple rollers (42) all make rolling contact with the upper frame (31) of the traveling track (3). The motor (44) is fixedly installed at the bottom of the mounting box (41), and the output shaft of the motor (44) extends into the mounting box (41). The output shaft of the motor (44) is coaxially fixedly connected to one of the rollers (42).

4. The precast pipe climbing and hoisting platform in a well according to claim 1, characterized in that: The elastic telescopic rod (7) includes a sleeve (71) and an inner rod (72). One end of the inner rod (72) extends into the sleeve (71) to achieve telescopic connection. The upper end of the sleeve (71) is hinged to the hanging frame (6) as the upper end of the elastic telescopic rod (7). The lower end of the inner rod (72) is hinged to the connector (73) as the lower end of the elastic telescopic rod (7). A first spring is fixedly connected between the sleeve (71) and the inner rod (72). A limit block (74) is provided on the side wall of the inner rod (72). The limit block (74) is used to abut the lower end of the sleeve (71) during the retraction of the inner rod (72).

5. The precast pipe climbing and hoisting platform in a well according to claim 1, characterized in that: The hanging frame (6) is fixedly provided with a connecting frame (9), and a lifting block (92) is provided in the connecting frame (9). A second spring (93) is fixedly connected between the top of the lifting block (92) and the top of the connecting frame (9). The second spring (93) is used to provide an elastic restoring force for the lifting block (92) to automatically return to its original position. The upper end of the elastic telescopic rod (7) is hinged to the lifting block (92).

6. The precast pipe climbing and hoisting platform in a well according to claim 5, characterized in that: The electric hoist (5) includes a lifting rope and a hook, and a weight sensor is provided between the lifting rope and the hook; it also includes an alarm, and the weight sensor is electrically connected to the alarm. When the weight sensed by the weight sensor exceeds the threshold set by the alarm, the alarm will automatically sound and the entire unit will stop.

7. The precast pipe climbing and hoisting platform in a manhole according to claim 6, characterized in that: An infrared distance sensor (101) is installed on the top of the hanging frame (6), and a reflector (102) is installed on the lifting block (92). The infrared distance sensor (101) and the reflector (102) are arranged opposite each other in the vertical direction. A controller is connected between the infrared distance sensor (101) and the alarm. When the infrared distance sensor (101) senses that the distance between itself and the reflector (102) is increasing, the threshold of the alarm is reduced. When the infrared distance sensor (101) senses that the distance between itself and the reflector (102) is decreasing, the threshold of the alarm is increased.

8. The precast pipe climbing and hoisting platform in a well according to claim 4, characterized in that: The hanging frame (6) is fixedly provided with a clamping frame (8). A clamping opening is provided on one side of the clamping frame (8). The opening of the clamping opening faces the elastic telescopic rod (7), and the clamping opening is located on the path of the elastic telescopic rod (7) swinging inward. Elastic rubber layers (81) are provided on both horizontally opposite surfaces of the clamping opening. The minimum distance between the two elastic rubber layers (81) is less than the diameter of the inner rod (72) of the elastic telescopic rod (7).

9. A method for hoisting a precast pipe in a well using a climbing hoisting platform as described in claim 7, characterized in that: S1: Using a hydraulic jacking mechanism, the main load-bearing truss (1) is raised to the required hoisting height; S2: Move the transverse frame (4) outward, causing the spring telescopic rod to swing outward and lengthen. The spring telescopic rod causes the lifting block (92) and reflector (102) to descend. The infrared distance sensor (101) detects that the distance between it and the reflector (102) has increased and controls the threshold of the alarm to decrease. S3: The electric hoist (5) moves laterally into position and hoists the precast pipe onto the hook of the electric hoist (5); S4: Use the lateral movement of the transverse frame (4) and electric hoist (5) to lift the precast pipe to the designated position and carry out the installation work.

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