Foot-operated anti-falling safety pin lifting winch

Abstract

This utility model relates to the field of winch fall prevention technology, and proposes a foot-operated fall prevention safety pin winch, including a bracket, bearing seat, rotating shaft, winch, and fall prevention mechanism; the bracket is welded together with bottom angle steel, top angle steel, and supporting angle steel, and the rotating shaft passes through the bearing seat to fix the winch and locking teeth; the fall prevention mechanism includes a safety bar, foot pedal, and transmission rod. The safety bar engages with the locking teeth, and the safety bar is hinged to the top angle steel. The transmission rod connects the bent part of the foot pedal to the lifting lug of the safety bar. When the foot pedal is pressed, the safety bar is lifted by the transmission rod and disengaged from the locking teeth; during normal lifting, the winch rotates clockwise, and the safety bar does not interfere; when accidentally released, the winch rotates counterclockwise, and the safety bar engages the locking teeth by gravity to achieve self-locking; during lowering, stepping on the foot pedal separates the safety bar from the locking teeth. This utility model is in a locked state when not in use, eliminating the habitual violation of not using the fall prevention safety pin by operators, eliminating the need for manual operation of the safety bar, improving work efficiency, and ensuring safety in underground operations.

Description

Technical Field

[0001] This utility model relates to the field of lifting winch anti-fall technology, and in particular to a foot-operated anti-fall safety pin lifting winch. Background Technology

[0002] In the construction of manually excavated bored pile foundations, the existing hoisting winch anti-fall safety pins require manual operation by the operator. The hoisting process is as follows: rotate upward → stop and lock → remove the material bucket → attach the empty material bucket → unlock operation → rotate downward. In the current hoisting process, the safety pins need to be manually locked and unlocked, and the hoisting process also requires manual rotation of the winch. The operation is not continuous during the hoisting process, resulting in low work efficiency. Furthermore, some workers, in pursuit of convenience and speed, violate regulations by not using the anti-fall safety pins. If they accidentally let go, the heavy material bucket will fall freely and strike the workers underground, causing personal injury or death.

[0003] Based on this, this utility model proposes a foot-operated anti-fall safety pin lifting winch, which makes the operation of the winch lifting process more continuous and improves work efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a foot-operated anti-fall safety pin for lifting winches, which allows for smoother operation during winch lifting and improves work efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A foot-operated fall arrestor lifting winch includes: a bracket placed above a hole; two bearing seats on one side of the bracket; a rotating shaft passing through the two bearing seats in sequence; a winch sleeved with the rotating shaft; locking teeth between the winch and the bearing seats; a safety bar with one end engaged with the locking teeth; a foot pedal rotatably connected to the bottom of the bracket; a transmission rod connecting the foot pedal and the safety bar; a handle integrally formed with the rotating shaft; and a rope with one end fixedly connected to the winch. The rotating shaft is rotatably connected to the two bearing seats; the winch and locking teeth are fixedly connected to the rotating shaft; and the other end of the safety bar is rotatably connected to the top of the bracket.

[0007] The foot pedal includes: a plate, a bent portion integrally formed with the plate, and a rotating seat located at the junction of the plate and the bent portion; a gap is left between the unused end of the plate and the ground; the rotating seat is located on the bottom of the bracket; one end of the transmission rod is fixedly connected to the bent portion, and the other end of the transmission rod is rotatably connected to the safety rod.

[0008] Preferably, the bracket includes two parallel bottom angle steels placed on the ground, and a top angle steel a certain distance from the ground. The top angle steel is parallel to the bottom angle steel, and the bottom angle steel and the top angle steel are connected as one unit by several supporting angle steels. The safety rod is rotatably connected to the top angle steel. The rotating seat is disposed on the bottom angle steel.

[0009] Preferably, the bottom of the safety bar is provided with a lifting lug, and the safety bar and the top angle steel are rotatably connected by a hinge seat; the distance between the lifting lug and the hinge seat is less than the distance between the lifting lug, the safety bar and the meshing end of the locking teeth, and the lifting lug is rotatably connected to the transmission rod.

[0010] Preferably, the connection end between the transmission rod and the safety rod is provided with a right-angle section, the right-angle section is rotatably connected to the lifting lug, and a limiting platform is provided at the end of the right-angle section.

[0011] Preferably, the distance between the lug and the hinge seat is one-third of the distance between the lug safety bar and the engaging end of the locking tooth.

[0012] Preferably, the handle is located on the pivot outside the locking teeth.

[0013] This utility model discloses a foot-operated anti-fall safety pin lifting winch, which has the following beneficial effects.

[0014] The winch of this utility model includes a bracket, bearing seat, rotating shaft, winch, and linkage anti-fall mechanism. The bracket is welded from bottom angle steel, top angle steel, and supporting angle steel. The rotating shaft passes through the bearing seat to fix the winch and locking teeth. The anti-fall mechanism consists of a safety bar, foot pedal, and transmission rod: the safety bar engages with the locking teeth, the safety bar is hinged to the top angle steel, and the transmission rod connects the bent part of the foot pedal to the lifting lug of the safety bar. When the foot pedal is pressed, the safety bar is lifted by the transmission rod and disengaged from the locking teeth. During normal lifting, the winch rotates clockwise without interference from the safety bar. When accidentally released, the winch rotates counterclockwise, and the safety bar engages the locking teeth by gravity to achieve self-locking. When lowering, stepping on the foot pedal separates the safety bar from the locking teeth. When the foot pedal is not used, one end of the safety bar engages with the locking teeth when the winch rotates counterclockwise. The foot-operated anti-fall safety pin keeps the winch in a locked state during lifting, preventing workers from neglecting to use the anti-fall safety for convenience and eliminating the habitual violation of not using the anti-fall safety. This invention utilizes a foot-operated anti-fall structure to achieve seamless switching between lifting, lowering, and locking, eliminating the need for manual operation of the safety bar, simplifying the operation process, improving work efficiency, and ensuring safety during underground operations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a front view structural diagram of the present invention.

[0017] Figure 3 This is a side view of the structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure between the foot pedal and the bumper.

[0019] Figure 5 for Figure 1 A magnified view of a portion of point A in the middle.

[0020] Figure 6 for Figure 4 A magnified view of a portion of point B in the middle.

[0021] In the attached diagram: 1. Bracket; 101. Bottom angle steel; 102. Supporting angle steel; 103. Top angle steel; 2. Bearing seat; 3. Shaft; 4. Winch; 5. Locking tooth; 6. Safety bar; 601. Lifting lug; 602. Hinge seat; 7. Transmission rod; 8. Foot pedal; 801. Plate; 802. Rotating seat; 803. Bending part; 9. Handle; 10. Rope. Detailed Implementation

[0022] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0023] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0024] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0025] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0026] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances. Example 1

[0027] Please refer to Figures 1 to 6 A foot-operated fall arrestor lifting winch includes: a bracket 1 placed above a hole; two bearing seats 2 located on one side of the bracket 1; a rotating shaft 3 passing sequentially through the two bearing seats 2; a winch 4 sleeved with the rotating shaft 3; locking teeth 5 located between the winch 4 and the bearing seats 2; a safety bar 6 with one end engaged with the locking teeth 5; a foot pedal 8 rotatably connected to the bottom of the bracket 1; a transmission rod 7 connecting the foot pedal 8 and the safety bar 6; a handle 9 integrally formed with the rotating shaft 3; and a rope 10 fixedly connected at one end to the winch 4. The rotating shaft 3 is rotatably connected to the two bearing seats 2; the winch 4 and locking teeth 5 are fixedly connected to the rotating shaft 3; the other end of the safety bar 6 is rotatably connected to the top of the bracket 1; specifically, the rotating shaft 3 is sleeved with the inner rings of the bearings inside the two bearing seats 2.

[0028] like Figure 4 and Figure 6 As shown, the foot pedal 8 includes: a plate 801, a bent portion 803 integrally formed with the plate 801, and a rotating seat 802 located at the junction of the plate 801 and the bent portion 803; a gap is left between the unused end of the plate 801 and the ground; the rotating seat 802 is located on the bottom of the bracket 1; one end of the transmission rod 7 is fixedly connected to the bent portion 803, and the other end of the transmission rod 7 is rotatably connected to the safety rod 6.

[0029] In this embodiment, when the handle 9 is turned clockwise to drive the winch 4 to rotate, the rope 10 gradually winds around the winch 4. At this time, it is in the lifting state, and the safety rod 6 does not interfere with the rotation of the locking teeth 5. When the handle 9 is released accidentally, the rope 10 drives the winch 4 to rotate counterclockwise under the pull of the weight of the lower material bucket. At this time, one end of the safety rod 6 engages with the locking teeth 5 under the action of gravity, preventing the winch 4 from rotating counterclockwise and preventing the heavy material bucket from falling freely and hitting the workers in the well.

[0030] When it is necessary to lower the bucket via rope 10, after gripping handle 9, simply step on foot pedal 8. When the person steps on foot pedal 8, the bent part 803 rises, driving the transmission rod 7 to move. The transmission rod 7 lifts the safety rod 6, causing the safety rod 6 to rotate along the hinge seat 602. The safety rod 6 separates from the locking tooth 5. At this time, turn handle 9 counterclockwise to drive winch 4 to rotate and lower the bucket.

[0031] In this embodiment, when the foot pedal is not used (i.e., the foot pedal 8 is not pressed), the safety bar 6 engages with the locking tooth 5 at one end when the winch 4 rotates counterclockwise. The foot pedal-type fall arrestor lifting winch is always in a locked state, meaning the bucket cannot descend. This prevents operators from refusing to use the fall arrestor for convenience and speed, thus eliminating the habitual violation of operators not using the fall arrestor.

[0032] like Figure 1 As shown, in this preferred embodiment, the bracket 1 includes two parallel bottom angle steels 101 placed on the ground, and a top angle steel 103 a certain distance from the ground. The top angle steel 103 is parallel to the bottom angle steels 101, and the bottom angle steels 101 and the top angle steel 103 are welded together by four supporting angle steels 102. The safety rod 6 is rotatably connected to the top angle steel 103. The rotating seat 802 is provided on the bottom angle steel 101.

[0033] like Figure 5 As shown, in this preferred embodiment, a lifting lug 601 is welded to the bottom of the safety rod 6, and the safety rod 6 and the top angle steel 103 are rotatably connected through a hinge seat 602; the distance between the lifting lug 601 and the hinge seat 602 is less than the distance between the end of the lifting lug 601 that engages with the safety rod 6 and the locking tooth 5, and the lifting lug 601 is rotatably connected to the transmission rod 7.

[0034] Preferably, in this embodiment, the connection end of the transmission rod 7 and the safety rod 6 is provided with a right-angle section, which is rotatably connected to the lifting lug 601. The end of the right-angle section is provided with a limiting platform to prevent the transmission rod 7 from separating from the lifting lug 601. Alternatively, the limiting platform can be replaced by bending the end of the right-angle section.

[0035] Preferably, in this embodiment, the handle 9 is located on the rotating shaft 3 outside the locking teeth 5. Example 2

[0036] Based on Example 1, this example refers to... Figures 1 to 6 Preferably, in this embodiment, the distance between the lug 601 and the hinge seat 602 is one-third of the distance between the engagement end of the lug 601 safety rod 6 and the locking tooth 5. This ensures that when no one is stepping on the foot pedal 8, the safety rod 6 remains engaged with the locking tooth 5 under the action of gravity. In addition, when a person steps on the foot pedal 8, the bent part 803 is lifted, which drives the transmission rod 7 to move. The transmission rod 7 lifts the safety rod 6, allowing the safety rod 6 to rotate at a larger angle along the hinge seat 602, which facilitates the separation of the safety rod 6 from the locking tooth 5.

[0037] This embodiment also provides a method for using a foot-operated fall arrestor safety pin lifting winch, which is explained in conjunction with the operator's winch lifting process;

[0038] When the winch is rotating and rising, turning the handle 9 clockwise will cause the winch 4 to rotate, and the rope 10 will gradually wind around the winch 4. At this time, the safety rod 6 will not interfere with the rotation of the locking teeth 5. During this process, if the handle 9 is accidentally released, the rope 10 will be pulled by the weight of the lower material bucket, causing the winch 4 to rotate counterclockwise. At this time, one end of the safety rod 6 will engage with the locking teeth 5 under the action of gravity, preventing the winch 4 from rotating counterclockwise and preventing the heavy material bucket from falling freely and hitting the workers in the well.

[0039] When the winch is in the stop locking process, the winch 4 stops rotating, and one end of the safety rod 6 engages with the locking teeth 5 under the action of gravity, preventing the winch 4 from rotating counterclockwise and preventing the heavy object in the bucket from falling freely and hitting the workers in the well.

[0040] When the winch is in the process of attaching an empty bucket, one end of the safety rod 6 engages with the locking tooth 5 under the action of gravity, preventing the winch 4 from rotating counterclockwise and preventing the bucket from falling freely and hitting the workers in the well.

[0041] When the winch is in the unlocking operation, after gripping handle 9, simply step on foot pedal 8. When foot pedal 8 is pressed, the bent part 803 rises, driving the transmission rod 7 to move. The transmission rod 7 lifts the safety bar 6, causing the safety bar 6 to rotate along the hinge seat 602. The safety bar 6 separates from the locking teeth 5, thus entering the rotation and descent process. At this point, turning handle 9 counterclockwise drives the winch 4 to rotate and lower the bucket. This achieves seamless switching between winch lifting, lowering, and locking, eliminating the need for manual operation of the safety bar, simplifying the operation process, and improving work efficiency.

[0042] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Substitutions may include replacements for some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.

Claims

1. A foot-operated anti-fall safety pin lifting winch, characterized in that, include: A bracket (1) is placed above the hole; two bearing seats (2) are located on one side of the bracket (1); a rotating shaft (3) passes through the two bearing seats (2) in sequence; a winch (4) is sleeved with the rotating shaft (3); a locking tooth (5) is located between the winch (4) and the bearing seat (2); a safety bar (6) is engaged with the locking tooth (5) at one end; a foot pedal (8) is rotatably connected to the bottom of the bracket (1); a transmission rod (7) connects the foot pedal (8) and the safety bar (6); a handle (9) is integrally set with the rotating shaft (3); and a rope (10) is fixedly connected to the winch (4) at one end. The rotating shaft (3) is rotatably connected to the two bearing seats (2); the winch (4) and the locking tooth (5) are fixedly connected to the rotating shaft (3); and the other end of the safety bar (6) is rotatably connected to the top of the bracket (1). The foot pedal (8) includes: a plate (801), a bent part (803) integrally formed with the plate (801), and a rotating seat (802) located at the junction of the plate (801) and the bent part (803); a gap is left between the unused end of the plate (801) and the ground; the rotating seat (802) is located on the bottom of the bracket (1); one end of the transmission rod (7) is fixedly connected to the bent part (803), and the other end of the transmission rod (7) is rotatably connected to the safety rod (6).

2. The foot-operated anti-fall safety pin lifting winch as described in claim 1, characterized in that, The bracket (1) includes two parallel bottom angle steels (101) placed on the ground, and a top angle steel (103) a certain distance from the ground. The top angle steel (103) is parallel to the bottom angle steel (101), and the bottom angle steel (101) and the top angle steel (103) are connected as one unit by several supporting angle steels (102). The safety rod (6) is rotatably connected to the top angle steel (103). The rotating seat (802) is provided on the bottom angle steel (101).

3. The foot-operated anti-fall safety pin lifting winch as described in claim 2, characterized in that, The bottom of the safety rod (6) is provided with a lifting lug (601), and the safety rod (6) and the top angle steel (103) are rotatably connected by a hinge seat (602); the distance between the lifting lug (601) and the hinge seat (602) is less than the distance between the lifting lug (601) and the meshing end of the safety rod (6) and the locking tooth (5), and the lifting lug (601) is rotatably connected to the transmission rod (7).

4. The foot-operated anti-fall safety pin lifting winch as described in claim 3, characterized in that, The transmission rod (7) and the safety rod (6) are connected at a right-angle section, which is rotatably connected to the lifting lug (601). The end of the right-angle section is provided with a limiting platform.

5. The foot-operated anti-fall safety pin lifting winch as described in claim 3, characterized in that, The distance between the lug (601) and the hinge seat (602) is one-third of the distance between the lug (601) safety bar (6) and the engaging end of the locking tooth (5).

6. The foot-operated anti-fall safety pin lifting winch as described in claim 1, characterized in that, The handle (9) is located on the pivot (3) outside the locking teeth (5).

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