Municipal tree pruning ladder

Abstract

The present invention discloses a municipal tree pruning ladder, comprising a fixing rope, two longitudinal beams, and a plurality of tread beams connecting the two longitudinal beams. The tread beams are spaced apart along the longitudinal direction of the longitudinal beams. One end of the fixing rope is detachably fixedly connected to the upper end of one of the longitudinal beams. The upper end of the other longitudinal beam is provided with a mounting hole. A one-way locking assembly for passing the fixing rope is provided in the mounting hole. The one-way locking assembly restricts movement of the fixing rope toward the detachable fixed connection end. The fixing rope extends downward through the one-way locking assembly. A control assembly for controlling the one-way locking assembly is provided below the longitudinal beams. The present invention has the following advantages and effects: the present invention can achieve more stable fixing of the ladder in a safe environment, thereby avoiding existing safety hazards.

Description

Technical Field

[0001] The present invention relates to the field of municipal construction equipment, in particular to a municipal tree pruning ladder. Background Art

[0002] The construction of various public infrastructure supporting urban life falls under the category of municipal engineering, such as the construction of common urban roads, bridges, subways, underground pipelines, tunnels, rivers, rail transit, sewage treatment, urban greening, etc.

[0003] A Chinese patent application with publication number CN113027320A discloses a municipal tree pruning ladder, which includes longitudinal beams on both sides, with a plurality of cross beams for stepping on arranged between the two longitudinal beams. The outer side walls of the two adjacent cross beams of the two longitudinal beams are provided with long holes along their own length directions, and a fixing belt is provided between the two longitudinal beams. Both ends of the fixing belt pass through the long holes, and the two ends of the fixing belt are detachably connected by a limit piece.

[0004] The ladder leans against the tree to form a triangular support structure, causing the distance between the ladder and the tree to gradually increase from top to bottom. This increase in distance increases the probability of the fixing straps shaking after being fixed, increasing the presence of uncertainty. Therefore, to ensure the stability of the ladder, the most reliable connection method is to connect the upper end of the ladder to the tree through a fixing strap. However, the operation of connecting the upper end of the ladder to the tree requires a worker to climb up the ladder to connect, and the removal of the fixing straps also requires a worker to operate at a high altitude. If this operation is performed by a single person, it will pose a significant safety hazard. In response to the above problems, the present invention was conceived. Summary of the Invention

[0005] The object of the present invention is to provide a municipal tree pruning ladder, which can achieve a more stable fixation of the ladder in a safe environment, thereby avoiding existing safety hazards.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A municipal tree pruning ladder, comprising a fixing rope, two longitudinal beams and a plurality of tread beams connecting the two longitudinal beams, wherein the plurality of tread beams are arranged at intervals along the length direction of the longitudinal beams, one end of the fixing rope is detachably fixedly connected to the upper end of one of the longitudinal beams, and the upper end of the other longitudinal beam is provided with a mounting hole, a one-way locking assembly for the fixing rope to pass through is provided in the mounting hole, the one-way locking assembly restricts the fixing rope from moving toward the detachable fixed connection end, the fixing rope passes through the one-way locking assembly and extends downward, and a control assembly for controlling the one-way locking assembly is provided below the longitudinal beam.

[0007] By adopting the above technical solution, the detachable fixed end of the fixing rope is opened, passed around the tree, and then fixedly connected to the longitudinal beam. The ladder is then erected and leaned against the tree. During this process, the fixing rope moves upward along with the ladder, wrapped around the tree. When the ladder is leaning against the tree, the fixing rope near the lower end of the ladder is pulled, tightening the fixing rope and cooperating with the one-way locking assembly to secure the fixing rope to the tree, thereby preventing the ladder from accidentally falling. When the worker completes the work, they descend the ladder and then control the control assembly near the lower end of the ladder to release the one-way locking assembly from locking the control rope. The worker then simply pulls the ladder to release the fixing rope from the tree, and then tilts the ladder to release the fixing rope from the tree. This structure allows the worker to complete both the fixing and releasing operations on the ground, thereby avoiding safety hazards associated with the fixing and releasing operations and making the ladder safer and more stable.

[0008] It is further configured as follows: the one-way locking assembly includes a locking block arranged in the mounting hole, a locking hole formed in the locking block and for the fixing rope to pass through, an eccentric pressing block eccentrically rotated in the locking hole and used to press against the fixing rope, and a torsion spring driving the eccentric pressing block to press against the fixing rope, the eccentric pressing block is pressed against the fixing rope and is arranged at an angle to limit the movement of the fixing rope toward the detachable fixed connection end.

[0009] By adopting the above technical solution, the eccentric clamping block is pressed against the fixed rope under the action of the torsion spring and is arranged at an angle. The inclined setting allows the fixed rope to move only in one direction. When the fixed rope moves in the other direction, the eccentric clamping block is pressed against the fixed rope to limit its movement, thereby achieving the purpose of one-way locking. The structure is simple, the processing is convenient, and the cost is low.

[0010] It is further configured that: when the eccentric pressing block presses against the fixing rope, the eccentric pressing block is located above the fixing rope, and a friction layer is provided at the position where the eccentric pressing block presses against the fixing rope.

[0011] By adopting the above technical solution, the eccentric clamping block is set above the fixed rope, so that the worker will not drive the eccentric clamping block to move when operating the fixed rope, thereby ensuring the feasibility of the structure; and the friction force between the eccentric clamping block and the fixed rope is increased by setting the friction layer, so that the eccentric clamping block can better limit the movement of the fixed rope.

[0012] It is further configured as follows: the control assembly includes a control rope and a control block connected to the control rope, one end of the control rope is connected to the top of the eccentric tightening block and extends upward to pass through the locking block.

[0013] By adopting the above technical solution, the control block drives the eccentric pressing block to rotate back toward the fixed rope through the control rope, thereby realizing the unlocking control of the one-way locking assembly.

[0014] It is further configured as follows: the outer wall of the longitudinal beam is provided with a control slide groove extending downward along its length direction, the control block is embedded in the control slide groove and slides with it, the control block does not protrude from the control slide groove and is provided with an operating hole, the control slide groove extends upward to a position close to the mounting hole, and a guide ring for the control rope to pass through is provided near the upper end of the control slide groove, and the guide ring guides the control rope to be located in the control slide groove at a position corresponding to the control slide groove.

[0015] By adopting this technical solution, the guide ring and control chute cooperate to position the control rope between the guide ring and the control block within the control chute, preventing workers from accidentally triggering the control rope and thus eliminating safety hazards. Furthermore, by embedding the control block in the control chute and cooperating with the designated operating hole, workers can also avoid accidentally triggering the control block, thereby eliminating safety hazards. To operate the control block, a finger or stick is inserted into the control hole to control the control block.

[0016] It is further configured as follows: a clamping groove is formed between the two longitudinal beams, the positions near the two ends of the two longitudinal beams are connected by a fixed cross bar, a fixed frame is fixedly connected between several of the treading beams, the fixed frame slides in cooperation with the clamping groove and reciprocates along the length direction of the longitudinal beam, an elastic member for driving the fixed frame to move upward is provided between the fixed frame and the longitudinal beam, and the one-way locking assembly slides in cooperation with the mounting hole to make the one-way locking assembly move with the fixed frame.

[0017] By adopting the above technical solution, the fixing frame moves to a high place under the action of the elastic member, and then the fixing rope is pulled to control the fixing rope to drive the ladder to be locked to the tree. Then the worker climbs up the ladder. When the worker steps on the stepping beam of the ladder, the stepping beam drives the fixing frame and the one-way locking component downward under the action of the worker's own weight, relying on the worker's own weight to drive the fixing rope to be further locked to the tree, further improving the stability of the ladder and reducing the probability of accidents.

[0018] It is further configured that: the elastic member is a tension spring connecting the fixing frame and the longitudinal beam, and the tension spring is located above the fixing frame.

[0019] By adopting the above technical solution, this arrangement can extend the service life of the elastic member.

[0020] It is further configured as follows: a position of the longitudinal beam corresponding to the mounting hole is provided with a limiting ring whose horizontal height is flush with the detachable fixed connection end, and the fixing rope passes through the limiting ring and extends into the one-way locking assembly.

[0021] By adopting the above technical solution, the setting of the limit ring prevents the sliding phenomenon caused by the sliding of the locking position of the fixing rope due to the sliding of the one-way locking component when the fixing rope is locked to the tree, thereby ensuring the locking stability of the fixing rope.

[0022] It is further configured that the detachable fixed connection structure between the fixing rope and the longitudinal beam is a hanging ring fixed to the longitudinal beam and a safety buckle fixedly connected to the fixing rope and hung with the hanging ring.

[0023] By adopting the above technical solution, the safety buckle is hung on the hanging ring to realize a detachable fixed connection between the end of the fixing rope and the longitudinal beam, which has a simple structure and is easy to operate.

[0024] In summary, the present invention has the following beneficial effects: the present invention can achieve more stable fixation of the ladder in a safe environment, thereby avoiding existing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of an embodiment;

[0026] Figure 2 It is a structural diagram of an embodiment;

[0027] Figure 3 A partial cross-sectional view of an embodiment;

[0028] Figure 4 for Figure 3 Schematic diagram of the local structure in;

[0029] Figure 5 A partial cross-sectional view from another perspective 1 of the embodiment;

[0030] Figure 6 This is a partial cross-sectional view from another perspective 2 of the embodiment.

[0031] In the figure: 1. Fixing rope; 2. Longitudinal beam; 3. Stepping beam; 4. Mounting hole; 5. One-way locking assembly; 51. Locking block; 52. Locking hole; 53. Eccentric tightening block; 6. Control assembly; 61. Control rope; 62. Control block; 7. Friction layer; 8. Control slide; 9. Operating hole; 10. Guide ring; 11. Clamping slide; 12. Fixed cross bar; 13. Fixed frame; 14. Elastic member; 15. Limiting ring; 16. Hanging ring; 17. Safety buckle. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] refer to Figures 1 to 6A municipal tree pruning ladder includes a fixed rope 1, two longitudinal beams 2, and a plurality of tread beams 3. The two longitudinal beams 2 are spaced apart and form a compression chute 11 between them. A fixed crossbar 12 is fixedly connected near both ends of the two longitudinal beams 2. The fixed crossbar 12 near the upper end of the longitudinal beam 2 is curved. The plurality of tread beams 3 are spaced apart along the length of the longitudinal beams 2 between the two fixed crossbars 12, and a fixed frame 13 is fixedly connected between the plurality of tread beams 3. The fixed frame 13 slides in conjunction with the compression chute 11 to allow the fixed frame 13 to reciprocate along the length of the longitudinal beam 2. An elastic member 14 is provided between the fixed frame 13 and the longitudinal beam 2 to drive the fixed frame 13 upward. The elastic member 14 is a tension spring that fixedly connects the fixed frame 13 and the longitudinal beam 2 and is located above the fixed frame 13.

[0034] One end of a retaining rope 1 is removably fixed to the upper end of one of the longitudinal beams 2. A mounting hole 4 is defined at the upper end of the other longitudinal beam 2. A one-way locking assembly 5 is located within the mounting hole 4, through which the retaining rope 1 passes. The one-way locking assembly 5 restricts movement of the retaining rope 1 toward the removable, fixed end, and the retaining rope 1 extends downward through the one-way locking assembly 5. A control assembly 6 is located below the longitudinal beam 2 to control the one-way locking assembly 5. The one-way locking assembly 5 includes a locking block 51 positioned within the mounting hole 4, a locking hole 52 formed within the locking block 51 for the retaining rope 1 to pass through, an eccentric retaining block 53 eccentrically rotated by a shaft within the locking hole 52 for securing the retaining rope 1, and a torsion spring (not shown) that drives the eccentric retaining block 53 against the retaining rope 1. The eccentric retaining block 53 is positioned at an angle to the retaining rope 1 to restrict movement toward the removable, fixed end. The eccentric retaining block 53 is located above the retaining rope 1. A torsion spring is sleeved around the shaft, with one end fixedly connected to the eccentric abutment block 53 and the other end fixedly connected to the locking block 51. The locking block 51 slidably engages with the mounting hole 4 and is fixedly connected to the fixing frame 13. A friction layer 7 is provided where the eccentric abutment block 53 abuts against the fixing rope 1. The friction layer 7 comprises a plurality of friction protrusions integrally formed on the eccentric abutment block 53.

[0035] The control assembly 6 includes a control rope 61 and a control block 62 fixedly connected to the control rope 61. One end of the control rope 61 is fixedly connected to the top of the eccentric clamping block 53 and extends upward to pass through the locking block 51. The outer wall of the longitudinal beam 2 is provided with a control slot 8 extending downward along its length. The control block 62 is embedded in the control slot 8 and slides therewith. The control block 62 does not protrude from the control slot 8 and is provided with an operating hole 9. The control slot 8 extends upward to a position near the mounting hole 4. A guide ring 10 is fixed near the upper end of the control slot 8 for the control rope 61 to pass through. The guide ring 10 guides the control rope 61 to the position corresponding to the control slot 8 within the control slot 8. A limit ring 15 is fixed to the longitudinal beam 2 at a position corresponding to the mounting hole 4, at a level flush with the detachable fixed connection end. The fixing rope 1 passes through the limit ring 15 and extends into the locking hole 52. The detachable fixed connection structure between the fixing rope 1 and the longitudinal beam 2 is a hanging ring 16 fixed to the longitudinal beam 2 and a safety buckle 17 fixedly connected to the fixing rope 1 and hung with the hanging ring 16 .

[0036] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A municipal tree pruning ladder, comprising a fixing rope (1), two longitudinal beams (2) and a plurality of tread beams (3) connecting the two longitudinal beams (2), wherein the plurality of tread beams (3) are arranged at intervals along the longitudinal direction of the longitudinal beams (2), and characterized in that: One end of the fixing rope (1) is detachably fixedly connected to the upper end of one of the longitudinal beams (2), and a mounting hole (4) is provided at the upper end of the other longitudinal beam (2). A one-way locking assembly (5) for the fixing rope (1) to pass through is provided in the mounting hole (4). The one-way locking assembly (5) limits the fixing rope (1) from moving toward the detachable fixed connection end. The fixing rope (1) passes through the one-way locking assembly (5) and extends downward. A control assembly (6) for controlling the one-way locking assembly (5) is provided below the longitudinal beam (2). A compression slide is formed between the two longitudinal beams (2). The positions near both ends of the two longitudinal beams (2) are connected by a fixed cross bar (12); a fixed frame (13) is fixedly connected between the plurality of treading cross beams (3); the fixed frame (13) is slidably matched with the pressing chute (11) and reciprocates along the length direction of the longitudinal beam (2); an elastic member (14) for driving the fixed frame (13) to move upward is provided between the fixed frame (13) and the longitudinal beam (2); the one-way locking assembly (5) is slidably matched with the mounting hole (4) to enable the one-way locking assembly (5) to move with the fixed frame (13).

2. The municipal tree pruning ladder according to claim 1, characterized in that: The one-way locking assembly (5) comprises a locking block (51) arranged in the mounting hole (4), a locking hole (52) formed in the locking block (51) and for the fixing rope (1) to pass through, an eccentric pressing block (53) eccentrically rotated and arranged in the locking hole (52) and used to press against the fixing rope (1), and a torsion spring driving the eccentric pressing block (53) to press against the fixing rope (1); the eccentric pressing block (53) presses against the fixing rope (1) and is arranged to be inclined to limit the movement of the fixing rope (1) toward the detachable fixed connection end.

3. The municipal tree pruning ladder according to claim 2, characterized in that: When the eccentric pressing block (53) presses against the fixing rope (1), the eccentric pressing block (53) is located above the fixing rope (1), and a friction layer (7) is provided at the position where the eccentric pressing block (53) presses against the fixing rope (1).

4. The municipal tree pruning ladder according to claim 3, characterized in that: The control assembly (6) comprises a control rope (61) and a control block (62) connected to the control rope (61). One end of the control rope (61) is connected to the top of the eccentric pressing block (53) and extends upward to pass through the locking block (51).

5. The municipal tree pruning ladder according to claim 4, characterized in that: The outer wall of the longitudinal beam (2) is provided with a control slide groove (8) extending downward along its length direction, the control block (62) is embedded in the control slide groove (8) and slidably cooperates with the control block (62), the control block (62) does not protrude from the control slide groove (8) and is provided with an operating hole (9), the control slide groove (8) extends upward to a position close to the mounting hole (4), and a guide ring (10) for the control rope (61) to pass through is provided near the upper end of the control slide groove (8), and the guide ring (10) guides the control rope (61) to be located in the control slide groove (8) at a position corresponding to the control slide groove (8).

6. The municipal tree pruning ladder according to claim 1, characterized in that: The elastic member (14) is a tension spring connecting the fixed frame (13) and the longitudinal beam (2), and the tension spring is located above the fixed frame (13).

7. The municipal tree pruning ladder according to claim 1, characterized in that: The longitudinal beam (2) is provided with a limiting ring (15) at a position corresponding to the mounting hole (4), the horizontal height of which is flush with the detachable fixed connection end, and the fixing rope (1) passes through the limiting ring (15) and extends into the one-way locking assembly (5).

8. The municipal tree pruning ladder according to claim 1, characterized in that: The detachable fixed connection structure between the fixing rope (1) and the longitudinal beam (2) comprises a hanging ring (16) fixed to the longitudinal beam (2) and a safety buckle (17) fixedly connected to the fixing rope (1) and hung with the hanging ring (16).

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