A ladder fastening device

Abstract

This invention discloses a ladder fastening device, comprising a connecting assembly including a first sleeve block, a fixing bolt, and a connecting post; a directional assembly disposed at both ends of the connecting assembly, including a second sleeve block, a support post, and a counterweight; and a locking assembly disposed at the top of the directional assembly, including a semi-ring and edge teeth. This invention's device, through the cooperation of the connecting assembly, directional assembly, and locking assembly, provides a simple and quick ladder fastening solution. It shortens the ladder installation and securing time without introducing complex additional devices, reducing the workload of workers and improving their work efficiency.

Description

Technical Field

[0001] This invention relates to the field of ladder technology, and in particular to a fastening device for ladders. Background Technology

[0002] When using a ladder alone, it is often leaned against thin objects such as utility poles, resulting in an unstable installation. Ordinary ladders cannot lock themselves in place during setup. Generally, ladders with built-in fixing devices, such as lifting ladders, folding ladders, or even truck-mounted ladders, can be used as alternatives, but these devices are always too complicated. Therefore, a simple and quick ladder fixing device is needed that can improve the safety of ladder use without introducing complicated additional devices, reducing the workload of workers and shortening the time required to install and fix the ladder. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned ladders, the present invention is proposed.

[0004] Therefore, the problem to be solved by the present invention is how to fix a ladder simply and quickly, while shortening the time for ladder installation and fixing, without introducing complicated additional devices.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a fastening device for a ladder, comprising a connecting component, a guiding component, and a locking component.

[0006] As a preferred embodiment of the fastening device for the ladder described in this invention, the connecting assembly includes a first sleeve block, a fixing bolt, and a connecting post. There are two first sleeve blocks, which are fitted onto the top of the ladder. The fixing bolt passes through the first sleeve block and fits against the ladder. The connecting post is disposed between the two first sleeve blocks.

[0007] A directional component, disposed at both ends of the connecting component, includes a second sleeve block, a support column, and a counterweight. Two second sleeve blocks are fitted onto both ends of the connecting column. The support column is disposed at the top of the second sleeve block, and the counterweight is disposed at the bottom of the second sleeve block.

[0008] A locking component, disposed on top of the directional component, includes a semi-ring and side teeth, wherein the semi-ring is disposed on top of the support column and the side teeth are disposed on the outside of the semi-ring.

[0009] As a preferred embodiment of the fastening device for the ladder described in this invention, the first sleeve block is provided with a first hole, a first round hole and a first screw hole. The first hole penetrates the top and bottom of the first sleeve block, the first round holes of the two first sleeve blocks face each other, the first screw hole is provided on the side of the first sleeve block, the first hole is fitted onto the top of the ladder, the connecting post penetrates the first round holes of the two first sleeve blocks, and the fixing bolt cooperates with the first screw hole.

[0010] As a preferred embodiment of the fastening device for the ladder described in this invention, the connecting column is provided with a second hole and a second screw hole, the second hole and the first hole are directly opposite each other, the second hole is also fitted onto the top of the ladder, the second screw hole and the first screw hole are directly opposite each other, and the fixing bolt is engaged with the second screw hole.

[0011] As a preferred embodiment of the ladder fastening device of the present invention, the connecting assembly further includes two side plates, which are threadedly connected to both ends of the connecting post.

[0012] In a preferred embodiment of the ladder fastening device of the present invention, the second sleeve block is disposed between the side plate and the first sleeve block, the second sleeve block is provided with a second circular hole, and the connecting post passes through the second circular hole.

[0013] In a preferred embodiment of the ladder fastening device of the present invention, the directional component further includes a rotating column and a top cover, the rotating column being disposed on the top of the support column, the top cover being disposed on the top of the rotating column, and the diameter of the rotating column being smaller than the diameter of the support column.

[0014] As a preferred embodiment of the ladder fastening device of the present invention, the semi-ring is provided with a rotating hole and an inclined surface, the rotating hole is provided at one end of the semi-ring and cooperates with the rotating column, and the inclined surface is provided at the other end of the semi-ring.

[0015] As a preferred embodiment of the ladder fastening device of the present invention, the locking assembly further includes a locking block and a sealing plate, the locking block being disposed at the top of the support column away from the rotating hole, and the sealing plate being disposed at the center of the side of the locking block;

[0016] The card block is provided with a first arc groove, a second arc groove, a third arc groove, and a stepped groove. The first arc groove is located on the side of the card block facing the rotating column, and the first arc groove and the rotating column are concentric. The stepped groove passes through the side of the first arc groove and the side of the card block away from the rotating column. The sealing plate is engaged with the end of the stepped groove away from the rotating column. The first arc groove passes through the middle of the stepped groove. The second arc groove is located on one side of the first arc groove.

[0017] As a preferred embodiment of the ladder fastening device of the present invention, the locking assembly further includes a locking post, a return spring, and a sliding bottom. The locking post is disposed in the ladder groove, the return spring is disposed on the side of the locking post near the sealing plate, and the sliding bottom is disposed on the side of the return spring near the sealing plate. The two ends of the return spring are respectively fixedly connected to the locking post and the sliding bottom.

[0018] As a preferred embodiment of the fastening device for the ladder described in this invention, the locking assembly further includes a column tooth, a first positioning post, and a second positioning post. The column tooth is located on the side of the locking post away from the sealing plate. The column tooth and the side tooth are directly opposite each other. The first positioning post and the second arc groove cooperate with each other. The second positioning post and the third arc groove cooperate with each other.

[0019] The beneficial effects of this invention are as follows: with the cooperation of the connecting component, the directional component and the locking component, the ladder can be fixed simply and quickly. While shortening the time for ladder installation and fixing, it does not bring complicated additional devices, reduces the workload of workers and improves the work efficiency of workers. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0021] Figure 1 This is an overall structural diagram of the fastening device for the ladder.

[0022] Figure 2 Another perspective view of the overall structure of the fastening device for the ladder.

[0023] Figure 3 An exploded view of the overall fastening device for the ladder.

[0024] Figure 4 Cross-sectional view of a partial locking component for a ladder fastening device.

[0025] Figure 5 This is a structural diagram of the locking component of a ladder fastening device. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0029] Example 1

[0030] Reference Figures 1-5 This is the first embodiment of the present invention, which provides a ladder fastening device, which includes a connecting component 100, a guiding component 200 and a locking component 300.

[0031] Specifically, the connecting component 100 includes a first sleeve block 101, a fixing bolt 103, and a connecting post 104. There are two first sleeve blocks 101, which are fitted onto the top of the ladder T. The fixing bolt 103 passes through the first sleeve block 101 and fits against the ladder T. The connecting post 104 is located between the two first sleeve blocks 101.

[0032] The connecting component 100 is used to fit onto the two protruding shafts at the top of the ladder T;

[0033] The connecting post 104 directly contacts the utility pole G.

[0034] The directional component 200 is located at both ends of the connecting component 100 and includes a second sleeve block 201, a support column 202, and a counterweight 205. There are two second sleeve blocks 201, which are sleeved at both ends of the connecting column 104. The support column 202 is located at the top of the second sleeve block 201, and the counterweight 205 is located at the bottom of the second sleeve block 201.

[0035] The directional component 200 is used to provide support for the locking component 300 while keeping the locking component 300 always horizontal.

[0036] The locking component 300 is located on top of the orientation component 200 and includes a semi-ring 301 and a side tooth 302. The semi-ring 301 is located on top of the support column 202 and the side tooth 302 is located on the outside of the semi-ring 301.

[0037] When the locking component 300 is on the utility pole G on the ladder T frame, it will cover and lock the utility pole G, thus fixing the ladder T in place.

[0038] Specifically, the first sleeve block 101 is provided with a first hole H1, a first round hole H2 and a first screw hole H3. The first hole H1 passes through the top and bottom of the first sleeve block 101. The first round holes H2 of the two first sleeve blocks 101 are directly opposite each other. The first screw hole H3 is set on the side of the first sleeve block 101. The first hole H1 is fitted onto the top of the ladder T. The connecting post 104 passes through the first round holes H2 of the two first sleeve blocks 101. The fixing bolt 103 is engaged with the first screw hole H3.

[0039] Specifically, the connecting column 104 is provided with a second hole H4 and a second screw hole H5. The second hole H4 is directly opposite the first hole H1. The second hole H4 is also fitted onto the top of the ladder T. The second screw hole H5 is directly opposite the first screw hole H3. The fixing bolt 103 is fitted with the second screw hole H5.

[0040] First, fit the first hole H1 and the second hole H4 onto the ladder. Then, use the fixing bolt 103 to pass through the first screw hole H3 and the second screw hole H5 to fix the first sleeve block 101 and the connecting post 104 onto the ladder T.

[0041] Specifically, the connecting assembly 100 also includes two side plates 105, which are threadedly connected to both ends of the connecting post 104.

[0042] Side plate 105 prevents the second sleeve block 201 from detaching.

[0043] When in use, the device is attached to the top of the ladder T. As the ladder T is brought closer to the utility pole G, the locking component 300 secures and locks the utility pole G, and the ladder T is then placed on the top of the utility pole G.

[0044] Example 2

[0045] Reference Figures 1-5 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0046] Specifically, the second sleeve block 201 is located between the side plate 105 and the first sleeve block 101. The second sleeve block 201 has a second circular hole H8, and the connecting post 104 passes through the second circular hole H8.

[0047] The second sleeve block 201 can rotate around the connecting post 104 to cooperate with other components and keep the locking assembly 300 horizontal.

[0048] Specifically, the orientation component 200 also includes a rotating column 203 and a top cover 204. The rotating column 203 is disposed on the top of the support column 202, and the top cover 204 is disposed on the top of the rotating column 203. The diameter of the rotating column 203 is smaller than the diameter of the support column 202.

[0049] Specifically, the semi-ring 301 is provided with a rotating hole H7 and an inclined surface X1. The rotating hole H7 is located at one end of the semi-ring 301 and cooperates with the rotating column 203. The inclined surface X1 is located at the other end of the semi-ring 301.

[0050] The rotating column 203 is used as the rotation point of the semi-ring 301, and the top cover 204 prevents the semi-ring 301 from detaching.

[0051] Specifically, the locking assembly 300 also includes a locking block 309 and a sealing plate 310. The locking block 309 is located on the top of the support column 202 away from the rotating hole H7, and the sealing plate 310 is located at the center of the side of the locking block 309.

[0052] The locking block 309 is provided with a first arc groove K1, a second arc groove K2, a third arc groove K3 and a trapezoidal groove K4. The first arc groove K1 is located on the side of the locking block 309 facing the rotating column 203. The first arc groove K1 and the rotating column 203 are concentric. The trapezoidal groove K4 passes through the side of the first arc groove K1 and the side of the locking block 309 away from the rotating column 203. The sealing plate 310 and the end of the trapezoidal groove K4 away from the rotating column 203 are matched. The first arc groove K1 passes through the middle of the trapezoidal groove K4. The second arc groove K2 is located on one side of the first arc groove K1.

[0053] The locking block 309 and the sealing plate 310 provide placement points for other parts of the locking assembly 300.

[0054] Specifically, the locking assembly 300 also includes a locking post 303, a return spring 304, and a sliding base 305. The locking post 303 is disposed in the ladder groove K4, the return spring 304 is disposed on the side of the locking post 303 near the sealing plate 310, and the sliding base 305 is disposed on the side of the return spring 304 near the sealing plate 310. The two ends of the return spring 304 are respectively fixedly connected to the locking post 303 and the sliding base 305.

[0055] Specifically, the locking assembly 300 also includes a column tooth 306, a first positioning post 307 and a second positioning post 308. The column tooth 306 is located on the side of the locking post 303 away from the sealing plate 310. The column tooth 306 and the side tooth 302 are directly opposite each other. The first positioning post 307 and the second arc groove K2 cooperate, and the second positioning post 308 and the third arc groove K3 cooperate.

[0056] The locking block 309, together with the reset spring 304, the sliding bottom 305, the two positioning pins, the second arc groove K2, and the third arc groove K3, can keep the column tooth 306 perpendicular to the side tooth 302, so that the column tooth 306 and the side tooth 302 are always tightly engaged after contact.

[0057] When in use, the semi-ring 301 rotates around the rotating column 203, and the edge teeth 302 on the semi-ring 301 naturally rotate as well. However, since the rotation center of the semi-ring 301 is not its own center, the position of the edge teeth 302 in the first arc groove K1 will change.

[0058] Record the trajectory of the edge tooth 302 within the first arc groove K1. Place the locking post 303 on one side of the trapezoidal groove K4 and record the engagement position when the edge tooth 302 and the column tooth 306 begin to contact. Then, place the locking post 303 on the other side of the trapezoidal groove K4 and record the engagement position when the edge tooth 302 and the column tooth 306 disengage. Draw a diagram showing the movement trajectory of the locking post 303 during the two engagement positions. Set the first positioning post 307 and the second positioning post 308 at two points in the locking post 303, and draw the groove that engages with the two positioning posts based on the movement trajectory of these two points. This ensures that the column tooth 306 is always aligned with the edge tooth 302, while the return spring 304 ensures that the column tooth 306 is always in contact with the edge tooth 302.

[0059] In this way, as the ladder T approaches the utility pole G, the semi-ring 301 will rotate upon impact, and after rotating a full circle, it will be caught on the utility pole G. To ensure success, an external power source such as a coil spring or even a motor can be added to the semi-ring 301 at the rotating column 203.

[0060] In another scenario, after the ladder T is placed against the utility pole G, to prevent the ladder T from slipping or becoming unstable during the construction process, the worker can manually rotate the half-ring 301 to lock the utility pole G while climbing the ladder T.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fastening device for a ladder, characterized in that: include, The connecting assembly (100) includes a first sleeve block (101), a fixing bolt (103), and a connecting post (104). There are two first sleeve blocks (101), which are fitted onto the top of the ladder (T). The fixing bolt (103) passes through the first sleeve block (101) and fits against the ladder (T). The connecting post (104) is disposed between the two first sleeve blocks (101). A directional component (200), disposed at both ends of the connecting component (100), includes a second sleeve block (201), a support column (202), and a counterweight (205). Two second sleeve blocks (201) are fitted onto both ends of the connecting column (104). The support column (202) is disposed at the top of the second sleeve block (201), and the counterweight (205) is disposed at the bottom of the second sleeve block (201). A locking component (300) is disposed on the top of the orientation component (200), including a semi-ring (301) and a side tooth (302). The semi-ring (301) is disposed on the top of the support column (202), and the side tooth (302) is disposed on the outside of the semi-ring (301). The orientation component (200) further includes a rotating column (203) and a top cover (204). The rotating column (203) is disposed on the top of the support column (202), and the top cover (204) is disposed on the top of the rotating column (203). The diameter of the rotating column (203) is smaller than the diameter of the support column (202). The semi-ring (301) is provided with a rotating hole (H7) and an inclined surface (X1). The rotating hole (H7) is located at one end of the semi-ring (301) and is engaged with the rotating column (203). The inclined surface (X1) is located at the other end of the semi-ring (301). The locking assembly (300) further includes a locking block (309) and a sealing plate (310), the locking block (309) being disposed on the top of the support column (202) away from the rotating hole (H7), and the sealing plate (310) being disposed at the center of the side of the locking block (309); The locking block (309) is provided with a first arc groove (K1), a second arc groove (K2), a third arc groove (K3), and a stepped groove (K4). The first arc groove (K1) is located on the side of the locking block (309) facing the rotating column (203). The first arc groove (K1) and the rotating column (203) are concentric. The stepped groove (K4) penetrates the side of the first arc groove (K1) and the side of the locking block (309) away from the rotating column (203). The sealing plate (310) and the end of the stepped groove (K4) away from the rotating column (203) are engaged. The first arc groove (K1) penetrates the middle of the stepped groove (K4). The second arc groove (K2) is located on one side of the first arc groove (K1). The locking assembly (300) further includes a locking post (303), a return spring (304), and a sliding base (305). The locking post (303) is disposed in the ladder groove (K4). The return spring (304) is disposed on the side of the locking post (303) near the sealing plate (310). The sliding base (305) is disposed on the side of the return spring (304) near the sealing plate (310). The two ends of the return spring (304) are fixedly connected to the locking post (303) and the sliding base (305), respectively. The locking assembly (300) further includes a column tooth (306), a first positioning post (307), and a second positioning post (308). The column tooth (306) is located on the side of the locking post (303) away from the sealing plate (310). The column tooth (306) and the side tooth (302) are directly opposite each other. The first positioning post (307) and the second arc groove (K2) are engaged. The second positioning post (308) and the third arc groove (K3) are engaged. As the ladder (T) approaches the utility pole (G), the semi-ring (301) will rotate upon impact, and after rotating a full circle, it will wrap around the utility pole (G) and lock in place.

2. The ladder fastening device as described in claim 1, characterized in that: The first sleeve block (101) is provided with a first hole (H1), a first round hole (H2) and a first screw hole (H3). The first hole (H1) penetrates the top and bottom of the first sleeve block (101). The first round holes (H2) of the two first sleeve blocks (101) are directly opposite each other. The first screw hole (H3) is provided on the side of the first sleeve block (101). The first hole (H1) is fitted onto the top of the ladder (T). The connecting column (104) penetrates the first round holes (H2) of the two first sleeve blocks (101). The fixing bolt (103) is engaged with the first screw hole (H3).

3. The ladder fastening device as described in claim 2, characterized in that: The connecting column (104) is provided with a second hole (H4) and a second screw hole (H5). The second hole (H4) is opposite to the first hole (H1). The second hole (H4) is also fitted onto the top of the ladder (T). The second screw hole (H5) is opposite to the first screw hole (H3). The fixing bolt (103) is engaged with the second screw hole (H5).

4. The ladder fastening device as described in claim 3, characterized in that: The connecting assembly (100) also includes two side plates (105), which are threaded to both ends of the connecting post (104).

5. The ladder fastening device as described in claim 4, characterized in that: The second sleeve block (201) is disposed between the side plate (105) and the first sleeve block (101). The second sleeve block (201) is provided with a second circular hole (H8), and the connecting post (104) passes through the second circular hole (H8).

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