Portable safety rope fixing device

Abstract

The utility model relates to the technical field of safety construction, in particular to a portable safety rope fixing device. Comprising a fixed pipe and a sliding pipe, and the sliding pipe is arranged in the fixed pipe in a sleeved mode and can slide back and forth along the fixed pipe; sliding grooves are symmetrically formed in the two sides of the lower portion of the fixing pipe and extend in the length direction of the fixing pipe. The telescopic assembly further comprises a rhombic pull rod structure defined by four connecting rods, when the telescopic assembly is in a contracted state, the rhombic pull rod structure is in an extended state, the supporting assembly can enter and exit from the reserved hole, and carrying and transportation are convenient; when the telescopic assembly is in the stretching state, the rhombic pull rod structure is in the compressed state, the supporting assembly is locked in the reserved hole, a safety rope can be fixed for high-altitude operation, an anchoring structure does not need to be independently installed, the structural stability of the concrete member is improved, and meanwhile the safety of high-altitude operation is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to safe construction technical field especially relates to a portable safety rope fixing device. BACKGROUND

[0002] In the construction process of large concrete components, safety protection is the core link to protect the life safety of high-altitude workers. The safety rope fixing method commonly used in the industry is to directly bind the safety rope on the formwork for fixing. This traditional method can provide reliable anchoring support during the formwork removal stage, but after the concrete pouring is completed and enters the formwork removal stage, it will cause the original safety rope anchoring point to fail.

[0003] And the surface of the concrete component often lacks standardized structures such as pre-buried rings and grooves for safety rope anchoring, resulting in the subsequent high-altitude workers facing the dilemma of no reliable fixing point available, and being forced to use temporary welding hooks, drilling and installing expansion bolts and other methods for remediation, which not only is inefficient, but also may cause damage to the component structure.

[0004] The construction site can also use adjacent undemolished formwork or set up temporary steel frames as anchoring carriers, but this requires additional investment in materials and labor, and the stability of the temporary structure is difficult to guarantee, posing a high-altitude falling risk.

[0005] Therefore, there is an urgent need for a portable safety rope fixing device that can meet the needs of work after the formwork is removed. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies in the prior art, the utility model provides a portable safety rope fixing device which is simple in structure, easy to operate and high in safety.

[0007] The utility model provides a portable safety rope fixing device which is set in the reserved hole on the concrete component, and the safety rope fixing device comprises:

[0008] The telescopic assembly comprises a fixed tube and a sliding tube, the sliding tube is sleeved in the fixed tube and can slide back and forth along the fixed tube, the sliding tube outside the fixed tube is a lifting end, and the lifting end fixes the safety rope;

[0009] The sliding groove is provided with two sliding grooves and is symmetrically arranged on the lower sides of the fixed tube, the sliding groove extends along the length direction of the fixed tube, and part of the structure below the sliding tube is located in the fixed tube where the sliding groove is located;

[0010] The support assembly comprises a quadrilateral link structure formed by four connecting rods, a first top corner of the quadrilateral link structure is fixed on the fixed tube close to the chute, a second top corner of the quadrilateral link structure is fixed on the bottom of the sliding tube, the first top corner and the second top corner are located at two ends of a first diagonal line of the quadrilateral link structure, and the first top corner is above the second top corner, and another diagonal line of the quadrilateral link structure is a second diagonal line;

[0011] When the telescopic assembly is in the contracted state, the quadrilateral link structure is in the stretched state, the length of the second diagonal line is smaller than the inner diameter of the reserved hole, and the support assembly can enter and exit the reserved hole;

[0012] When the telescopic assembly is in the elongated state, the quadrilateral link structure is in the compressed state, the length of the second diagonal line is greater than the inner diameter of the reserved hole and smaller than or equal to the maximum inner diameter of the reserved hole, and the support assembly is locked in the reserved hole.

[0013] In the technical solution, when the telescopic assembly is in the contracted state, it is convenient to carry and transport, the sliding tube is pulled to slide in the fixed tube, the telescopic assembly is elongated, the shape of the quadrilateral link structure in the support assembly is changed, when the length of the second diagonal line is greater than the minimum inner diameter of the reserved hole and smaller than or equal to the maximum inner diameter of the reserved hole, the quadrilateral link structure is locked in the reserved hole, a safety rope can be used for high-altitude operation, a separate anchor structure is not needed, the structural stability of the concrete member is improved, and the safety of high-altitude operation is ensured.

[0014] In some embodiments of the present application, an upper portion of the fixed tube is provided with a positioning assembly, the positioning assembly comprises:

[0015] A positioning frame is matched with the outer edge shape of the reserved hole, the telescopic assembly is perpendicular to the plane where the positioning frame is located, the telescopic assembly passes through the center of the positioning frame and is collinear with the central axis of the positioning frame;

[0016] At least three positioning rods are uniformly distributed in the positioning frame, one end of each positioning rod is fixed on the positioning frame, and the other end is fixed on the fixed tube;

[0017] The plurality of positioning rods fix the telescopic assembly at the central axis position of the positioning frame.

[0018] In some embodiments of the present application, the positioning assembly further comprises a reinforcing rod, the reinforcing rod is a diagonal rod, one end of the reinforcing rod is fixed on the positioning frame corresponding to the positioning rod, and the other end is fixed on the fixed tube, the positioning rod, part of the fixed tube and the reinforcing rod form a right-angled triangle structure, the stability of the fixed tube is improved, and the fixed tube is prevented from shaking away from the central axis.

[0019] In some embodiments of the present application, the plurality of positioning rods are arranged coplanarly with the positioning frame.

[0020] In some embodiments of the present application, the end of the fixed tube near the pulling end of the sliding tube is fixed with a latch, the sliding tube is provided with a first positioning hole and a second positioning hole, the first positioning hole is arranged near the sliding groove, and the second positioning hole is arranged near the pulling end.

[0021] The latch cooperates with the first positioning hole, the telescopic assembly is in an elongated state, and the rhombic pull rod structure is in a compressed state.

[0022] The latch cooperates with the second positioning hole, the telescopic assembly is in a contracted state, and the rhombic pull rod structure is in an extended state.

[0023] In some embodiments of the present application, the distance between the first positioning hole and the second positioning hole is less than or equal to the length of the sliding groove, so that the sliding tube can slide along the fixed tube to achieve elongation or contraction of the telescopic assembly.

[0024] In some embodiments of the present application, the second top corner of the rhombic pull rod structure is fixed on the sliding tube through a connecting rod, the connecting rod is perpendicular to the sliding tube, the sliding tube slides up and down to drive the connecting rod to slide along the sliding groove, and the two ends of the connecting rod are fixed with two edges of the rhombic pull rod structure.

[0025] In some embodiments of the present application, the fixed tube above the sliding groove is provided with an ear plate, and the two edges of the first top corner of the rhombic pull rod structure are fixed on the ear plate through bolts, respectively.

[0026] In some embodiments of the present application, the bottom end of the fixed tube is provided with a baffle or a blocking rod for blocking the lower end opening of the fixed tube to prevent the sliding tube from falling out of the fixed tube.

[0027] In some embodiments of the present application, the fixed tube, the sliding tube, the positioning frame, and the positioning rod are all galvanized steel pipes.

[0028] Based on the above technical solution, when the telescopic assembly is in a contracted state, it is convenient to carry and transport, the sliding tube is pulled to slide in the fixed tube, the telescopic assembly is elongated, the shape of the rhombic pull rod structure in the supporting assembly is changed, when the length of the second diagonal line is greater than the minimum inner diameter of the reserved hole and less than or equal to the maximum inner diameter of the reserved hole, the rhombic pull rod structure is locked in the reserved hole, a safety rope can be used for high-altitude operation, a separate anchor structure is not needed, the structural stability of the concrete member is improved, and the safety of high-altitude operation is ensured.

[0029] The positioning frame and the positioning rod of the positioning assembly fix the fixing rod at the central axis position of the positioning frame, the triangular structure of the reinforcing rod and the partial structure of the fixing tube is stable, and the fixing tube can be further prevented from shaking away from the central axis

[0030] The safety rope fixing device has simple structure and reasonable design, occupies less space when the telescopic assembly is in the contraction state, is convenient to carry, is in the elongation state during work, can fix the safety rope by using the reserved hole structure of the component itself after the formwork of the concrete component is removed, and avoids damaging the concrete component. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0032] Figure 1 It is a top view cross-sectional schematic view of the safety rope fixing device of the present application;

[0033] Figure 2 It is a schematic view of the upper part structure of the fixing tube and the sliding tube of the present application;

[0034] Figure 3 It is a schematic view of the lower part structure of the fixing tube of the present application;

[0035] Figure 4 It is a schematic view of the structure of the diamond-shaped pull rod structure of the present application;

[0036] Figure 5 It is a schematic view of the structure of the safety rope fixing device of the present application in different states;

[0037] Figure 6 It is a schematic view of the structure of the positioning assembly of the present application.

[0038] In the drawings:

[0039] 10, reserved hole; 11, accommodating cavity; 12, connecting channel; 121, opening part; 20, telescopic assembly; 21, fixing tube; 211, sliding groove; 212, bolt; 213, ear plate; 214, baffle; 22, sliding tube; 221, pulling end; 222, first positioning hole; 223, second positioning hole; 224, fixing ring; 30, safety rope; 40, diamond-shaped pull rod structure; 41, first connecting rod; 42, second connecting rod; 43, third connecting rod; 44, fourth connecting rod; 45, connecting rod; 50, positioning assembly; 51, positioning frame; 52, positioning rod; 53, reinforcing rod. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0041] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] like Figures 1-4 As shown, this embodiment provides a portable safety rope fixing device, which is installed in a pre-drilled hole 10 in a concrete component. The pre-drilled hole 10 includes a receiving cavity 11 located inside the concrete component. The receiving cavity 11 communicates with the outside through a connecting channel 12. An opening 121 is formed in the connecting channel 12 near the surface of the concrete component. The diameter of the receiving cavity 11 is larger than the diameter of the connecting channel 12. The opening 121 has a trumpet-shaped structure, and its diameter gradually decreases in the direction away from the concrete surface until it is the same as the diameter of the connecting channel 12. The safety rope fixing device includes:

[0045] The telescopic assembly 20, disposed in the connecting channel 12, comprises a fixed tube 21 and a sliding tube 22, the sliding tube 22 is sleeved in the fixed tube 21 and can slide back and forth along the fixed tube 21, part of the sliding tube 22 is located outside the fixed tube as a lifting end 221, the lifting end 221 is provided with a fixing ring 224, the fixing ring 224 is wound with a fixed safety rope 30, as shown in Figure 2 In the embodiment, the fixed tube 21 is a galvanized steel tube with a diameter of 50 mm and a length of 3200 mm, and the sliding tube 22 is a galvanized steel tube with a diameter of 20 mm and a length of 3400 mm;

[0046] The sliding groove 211 is provided on the lower sides of the fixed tube 21 symmetrically, as shown in Figure 3 The sliding groove 211 extends along the length direction of the fixed tube 21, and part of the structure below the sliding tube 22 is located in the fixed tube 21 where the sliding groove 211 is located;

[0047] The support assembly, as shown in Figure 4 comprises a first connecting rod 41, a second connecting rod 42, a third connecting rod 43 and a fourth connecting rod 44 which are sequentially hinged to form a diamond-shaped tension rod structure 40, and the first connecting rod 41, the second connecting rod 42, the third connecting rod 43 and the fourth connecting rod 44 are all square tubes with a length of 460 mm, a diameter of 40 mm and a thickness of 1.5 mm.

[0048] One end of the first connecting rod 41 and the second connecting rod 42 is fixed symmetrically on the fixed tube 21 close to the sliding groove 211, the included angle of the first connecting rod 41 and the second connecting rod 42 forms a first top angle of the diamond-shaped tension rod structure 40, the included angle of the third connecting rod 43 and the fourth connecting rod 44 forms a second top angle of the diamond-shaped tension rod structure 40, the second top angle is fixed with the bottom of the sliding tube 22, the first top angle and the second top angle are located at the two ends of a first diagonal line of the diamond-shaped tension rod structure 40, the first diagonal line is collinear with the fixed tube 21, and the first top angle is located above the second top angle, the other diagonal line of the diamond-shaped tension rod structure 40 is a second diagonal line, and the second diagonal line is perpendicular to the fixed tube 21;

[0049] Specifically, as shown in Figure 4 the second top angle of the diamond-shaped tension rod structure 40 is fixed on the sliding tube 22 through a connecting rod 45, the connecting rod 45 is perpendicular to the sliding tube 22, the sliding tube 22 slides up and down to drive the connecting rod 45 to slide along the sliding groove 211, and the two ends of the connecting rod 45 are fixed with one end of the third connecting rod 43 and the fourth connecting rod 44 of the diamond-shaped tension rod structure 40; the connecting rod 45 slides along the sliding groove 211 to stretch or compress the diamond-shaped tension rod structure 40.

[0050] When the telescopic assembly 20 is in the contracted state, the diamond-shaped tension rod structure 40 is in the stretched state, as shown in Figure 5As shown by the dotted line, the length of the second diagonal line is less than the inner diameter of the accommodating cavity 11 or the connecting channel 12 of the reserved hole 10, and the support assembly 40 can enter and exit the reserved hole;

[0051] When the telescopic assembly 20 is in the extended state, the diamond-shaped pull rod structure 40 is in the compressed state, as shown by the solid line. Figure 5 As shown by the dotted line, the length of the second diagonal line is less than the inner diameter of the accommodating cavity 11 or the connecting channel 12 of the reserved hole 10, and the support assembly 40 can enter and exit the reserved hole;

[0052] As shown by the dotted line, the length of the second diagonal line is less than the inner diameter of the accommodating cavity 11 or the connecting channel 12 of the reserved hole 10, and the support assembly 40 can enter and exit the reserved hole; Figures 5-6 As shown by the dotted line, the length of the second diagonal line is less than the inner diameter of the accommodating cavity 11 or the connecting channel 12 of the reserved hole 10, and the support assembly 40 can enter and exit the reserved hole;

[0053] The positioning frame 51 is shaped to fit the outer edge of the opening part 121 of the reserved hole 10, and in this embodiment, the opening part 121 of the reserved hole is a circular structure, so the positioning frame 51 is also circular and is bent from a galvanized steel pipe with a diameter of 26 mm. The radius of the positioning frame is slightly greater than the inner diameter of the connecting channel 12, so that the positioning frame 51 can be clamped at the connection between the connecting channel 12 and the opening part 121. The telescopic assembly 20 is perpendicular to the plane on which the positioning frame 51 is located, and the fixed pipe 21 of the telescopic assembly 20 passes through the center of the positioning frame 51 and is collinear with the central axis of the positioning frame 51.

[0054] The positioning rods 52 are at least three galvanized steel pipes with a diameter of 26 mm, which are uniformly distributed in the positioning frame 51 and are arranged in the same plane as the positioning frame 51. One end of the positioning rod 52 is fixed to the positioning frame 51, and the other end is fixed to the fixed pipe 21. In some embodiments, when the positioning frame 51 is circular, the three positioning rods 52 are uniformly distributed in the positioning frame, and the included angle between two adjacent positioning rods 52 is 120°. Figure 6 As shown in the embodiment, four positioning rods 52 are uniformly distributed in the circular positioning frame 51, and the included angle between two adjacent positioning rods 52 is 90°.

[0055] The positioning assembly further comprises a reinforcing rod 53, which is a diagonal rod. One end of the reinforcing rod 53 is fixed to the positioning frame 51 corresponding to the positioning rod 52, and the other end is fixed to the fixed pipe 21. The positioning rod 52, part of the fixed pipe 21, and the reinforcing rod 53 form a right-angled triangle structure, which improves the stability of the fixed pipe 21. The positioning rod fixes one point of the fixed pipe 21 at the center point of the positioning frame 51, and the reinforcing rod 53 fixes another point of the fixed pipe. The positioning rod 52 and the reinforcing rod 53 jointly fix the fixed pipe 21 on the central axis of the positioning frame 51, thereby avoiding the fixed pipe 21 from shaking away from the central axis.

[0056] To facilitate operation, the end of the fixed tube 21 close to the pulling end 221 of the sliding tube 22 is fixed with a latch 212, which can move back and forth along the direction perpendicular to the axis of the sliding tube 22, and the sliding tube 22 is provided with a first positioning hole 222 close to the sliding groove 211 and a second positioning hole 223 close to the pulling end 221;

[0057] The latch 212 cooperates with the first positioning hole 222, the telescopic assembly 20 is in the extended state, and the diamond-shaped pull rod structure 40 is in the compressed state.

[0058] The latch 212 cooperates with the second positioning hole 223, the telescopic assembly 20 is in the contracted state, and the diamond-shaped pull rod structure 40 is in the stretched state.

[0059] The distance D1 between the first positioning hole 222 and the second positioning hole 223 is less than or equal to the length D2 of the sliding groove 211, in this embodiment, D1 is 280 mm and D2 is 287 mm, so that the sliding tube 22 has enough space to slide in the sliding groove 211, and the latch can lock the telescopic assembly in the contracted or extended state.

[0060] The fixed tube 21 above the sliding groove 211 is provided with an ear plate 213, one end of the first connecting rod 41 and the second connecting rod 42 constituting the first top corner of the diamond-shaped pull rod structure 40 are respectively hinged and fixed on the ear plate 213, and one end of the first connecting rod 41 and the second connecting rod 42 can rotate around the ear plate 213.

[0061] The bottom end of the fixed tube 21 is provided with a baffle 214 or a blocking rod, which is used to block the lower end opening of the fixed tube to prevent the sliding tube 22 from falling out of the fixed tube 21.

[0062] In the normal state, the telescopic assembly 20 is in the contracted state, the bolt 212 is matched and fixed with the second positioning hole 223, the supporting assembly 40 is in the stretched state, the occupied space is small, and the safety rope fixing device is convenient to carry; when in use, the safety rope fixing device is placed into the reserved hole 10 with the telescopic assembly 20 in the contracted state, the supporting assembly 40 is in the accommodating cavity 11, the bolt 212 is pulled out, the cooperation with the second positioning hole 223 is released, the sliding pipe 22 is pulled outwards, and the sliding pipe 22 is stopped when being pulled to the position of the first positioning hole 222, the bolt 212 is inserted into the first positioning hole 222, at this time, the telescopic assembly 20 is in the elongated state, the supporting assembly 40 is in the compressed state, the length of the second diagonal line perpendicular to the telescopic assembly is greater than the inner diameter of the connecting channel 12, the supporting assembly 40 is locked in the accommodating cavity 11, and the positioning frame 51 is clamped on the inner wall of the opening part 121; when working, the safety rope 30 is subjected to a downward force, in the horizontal direction, the first connecting rod 41 and the second connecting rod 42 generate horizontal outward force on the inner wall of the accommodating cavity, the reinforcing rod 53 generates horizontal inward force on the positioning frame 51, and the safety rope fixing device can be firmly locked in the reserved hole 10.

[0063] Based on the above technical scheme, the telescopic assembly is convenient to carry and transport when being in the contracted state, the sliding pipe is pulled out to slide in the fixed pipe, the telescopic assembly is elongated, the shape of the diamond-shaped pull rod structure in the supporting assembly is changed, when the length of the second diagonal line is greater than the minimum inner diameter of the reserved hole and less than or equal to the maximum inner diameter of the reserved hole, the diamond-shaped pull rod structure is locked in the reserved hole, the safety rope can be used for high-altitude operation, a separate anchor structure is not needed, the structural stability of the concrete member is improved, and the safety of high-altitude operation is ensured;

[0064] The positioning frame and the positioning rod of the positioning assembly fix the fixed rod at the central axis position of the positioning frame, and the reinforcing rod and the positioning rod and part of the structure of the fixed pipe form a stable triangular structure, which can further prevent the fixed pipe from shaking away from the central axis

[0065] The safety rope fixing device has simple structure and reasonable design, after the formwork of the concrete member is removed, the reserved hole structure of the member itself can be used for fixing the safety rope, and damage to the concrete member is avoided.

[0066] It should be noted finally that: the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to.

[0067] The above examples are only used to illustrate the technical solutions of the present application and not to limit them; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, all of them should be covered in the technical solution range of the present application claimed.

Claims

1. A portable safety rope fixing device, installed in a pre-drilled hole in a concrete component, characterized in that, The safety rope securing device includes: A telescopic assembly includes a fixed tube and a sliding tube. The sliding tube is fitted inside the fixed tube and can slide back and forth along the fixed tube. The sliding tube located outside the fixed tube is a lifting end, and a safety rope is fixed to the lifting end. There are two sliding grooves, symmetrically arranged on both sides below the fixed tube. The sliding grooves extend along the length of the fixed tube, and part of the structure below the sliding tube is located inside the fixed tube where the sliding groove is located. The support assembly includes a diamond-shaped tie rod structure formed by four connecting rods. The first apex of the diamond-shaped tie rod structure is fixed to the fixed tube near the slide groove, and the second apex of the diamond-shaped tie rod structure is fixed to the bottom of the sliding tube. The first apex and the second apex are located at the two ends of the first diagonal of the diamond-shaped tie rod structure, and the first apex is located above the second apex. The other diagonal of the diamond-shaped tie rod structure is the second diagonal. When the telescopic component is in the retracted state, the diamond-shaped tie rod structure is in the extended state, the length of the second diagonal is less than the inner diameter of the reserved hole, and the support component can enter and exit the reserved hole; When the telescopic component is in the extended state, the diamond-shaped tie rod structure is in the compressed state, the length of the second diagonal is greater than the inner diameter of the reserved hole and less than or equal to the maximum inner diameter of the reserved hole, and the support component is locked in the reserved hole.

2. The portable safety rope fixing device according to claim 1, characterized in that, A positioning component is provided above the fixed tube, the positioning component comprising: The positioning frame is adapted to the outer edge shape of the reserved hole. The telescopic component is perpendicular to the plane where the positioning frame is located. The telescopic component passes through the center of the positioning frame and is collinear with the central axis of the positioning frame. At least three positioning rods are evenly distributed within the positioning frame. One end of each positioning rod is fixed to the positioning frame, and the other end is fixed to the fixing tube.

3. The portable safety rope fixing device according to claim 2, characterized in that, The positioning component also includes a reinforcing rod, which is an oblique rod. One end of the reinforcing rod is fixed to the positioning frame corresponding to the positioning rod, and the other end is fixed to the fixing tube. The positioning rod, part of the fixing tube, and the reinforcing rod form a right-angled triangular structure.

4. The portable safety rope fixing device according to claim 2, characterized in that, The plurality of positioning rods are arranged coplanarly with the positioning frame.

5. The portable safety rope fixing device according to claim 1, characterized in that, A pin is fixed to the end of the fixed tube near the lifting end of the sliding tube. The sliding tube has a first positioning hole and a second positioning hole. The first positioning hole is located near the sliding groove, and the second positioning hole is located near the lifting end. The pin engages with the first positioning hole, the telescopic component is in an extended state, and the diamond-shaped tie rod structure is in a compressed state. The pin engages with the second positioning hole, the telescopic component is in a retracted state, and the diamond-shaped tie rod structure is in an extended state.

6. The portable safety rope fixing device according to claim 5, characterized in that, The distance between the first positioning hole and the second positioning hole is less than or equal to the length of the groove, so that the sliding tube can slide along the fixed tube to realize the extension or contraction of the telescopic component.

7. The portable safety rope fixing device according to claim 1, characterized in that, The second apex of the rhombic tie rod structure is fixed to the sliding tube by a connecting rod. The connecting rod is perpendicular to the sliding tube. The sliding tube slides up and down, causing the connecting rod to slide along the groove. The two ends of the connecting rod are fixed to the two sides of the rhombic tie rod structure.

8. The portable safety rope fixing device according to claim 1, characterized in that, The fixed tube located above the chute is provided with an ear plate, and the two sides of the first apex of the rhomboid tie rod structure are respectively fixed to the ear plate by bolts.

9. The portable safety rope fixing device according to claim 1, characterized in that, The bottom end of the fixed tube is provided with a baffle or barrier rod to block the lower opening of the fixed tube.

10. The portable safety rope fixing device according to claim 2, characterized in that, The fixed tube, the sliding tube, the positioning frame, and the positioning rod are all galvanized steel pipes.

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