A mobile herringbone ladder

Abstract

The utility model belongs to the technical field of herringbone ladders, specifically a mobile herringbone ladder, including a ladder body, the ladder body including two groups of diagonal braces, the two groups of diagonal braces are arranged at a certain angle, each group of diagonal braces includes at least two diagonal braces, the top of each group of diagonal braces is provided with a ladder beam, the two ladder beams are connected together by hinges, a plurality of footrests are provided between the two diagonal braces in each group, a horizontal tie rod is provided between the two groups of diagonal braces, the bottom of each diagonal brace is provided with a running wheel, and each group of diagonal braces is provided with a power assist component for pushing the ladder body to move. The utility model moves the ladder body through the power assist component, so that the person can move the ladder body at the top of the ladder body, without the need for the person to climb up and down many times, saving the moving time of the ladder body and improving the working efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of herringbone ladders, in particular to a mobile herringbone ladder. Background Art

[0002] A herringbone ladder is a climbing tool used for decoration or maintenance work in the space above a flat surface (such as a roof). When it is used, the front and rear ladder bars and the ground form an isosceles triangle that looks like a "human" character, hence the name "herringbone ladder". Herringbone ladders are more common in fields such as electrical maintenance and interior decoration.

[0003] When using a ladder, the worker first opens the ladder and supports it in a triangle shape, then climbs to the top of the ladder to perform work activities. However, the work area is limited, and when other areas need to be worked on, the worker needs to first climb down the ladder, then move the ladder to the work area, and then climb up the ladder to perform work. Therefore, when working in a large area, the worker needs to climb up and down many times and move the ladder frequently, which wastes work time and leads to low work efficiency. Utility Model Content

[0004] In order to solve the problems in the above-mentioned background technology, the utility model provides a movable herringbone ladder, which moves the ladder body through a power-assisting component, so that people can move the ladder body at the top of the ladder body without the need for people to climb up and down multiple times, thereby saving the moving time of the ladder body and improving work efficiency.

[0005] The utility model provides a movable herringbone ladder, comprising a ladder body, wherein the ladder body comprises two groups of diagonal bracing rods, the two groups of diagonal bracing rods are arranged at a certain angle, each group of diagonal bracing rods comprises at least two diagonal bracing rods, the top of each group of diagonal bracing rods is provided with a ladder beam, the two ladder beams are connected together by a hinge, a plurality of footrest rods are provided between the two diagonal bracing rods in each group, a horizontal pull rod is provided between the two groups of diagonal bracing rods, a running wheel is provided at the bottom of each diagonal bracing rod, and a power assist component for pushing the ladder body to move is provided on each group of diagonal bracing rods.

[0006] Furthermore, the power-assisting assembly includes a fixed rod arranged between two oblique support rods, to which a power-assisting pedal is rotatably connected, and a first torsion spring is sleeved on the fixed rod for driving the power-assisting pedal to rotate upward. A receiving groove is provided in the power-assisting pedal, and a rotating rod is rotatably connected to the groove wall of the receiving groove. A power-assisting support rod is provided on the rotating rod, and the bottom end of the power-assisting support rod is movably contacted with the ground.

[0007] Furthermore, a second torsion spring is sleeved on the rotating rod, and the second torsion spring can drive the power-assisting support rod to rotate in a direction close to the pedal rod.

[0008] Furthermore, a limit rod is provided between the two diagonal support rods, the limit rod is located above the fixed rod, and the power pedal abuts against the limit rod.

[0009] Furthermore, the traveling wheels are universal wheels.

[0010] Furthermore, a locking assembly for locking the traveling wheel is provided in the diagonal support rod, the locking assembly includes a locking rod, the locking rod is slidably inserted into the diagonal support rod along the length direction of the diagonal support rod, the bottom end of the locking rod passes through the diagonal support rod and movably abuts against the traveling wheel, an operating rod is provided at the top end of the locking rod, a sliding groove and a locking groove are provided in the diagonal support rod, the sliding groove is provided along the length direction of the diagonal support rod, the locking groove is located at the bottom end of the sliding groove and is communicated with the sliding groove, the operating rod is movably provided in the sliding groove and the locking groove, a support ring is also provided on the locking rod, a support groove is provided in the diagonal support rod, the support ring is movably provided in the support groove, a spring is provided between the support ring and the groove wall of the support groove, the spring is located below the support ring and pushes the support ring to move upward.

[0011] Furthermore, a steering assembly is provided on one side of the ladder body, and the steering assembly includes at least two support frames, the support frames are provided on the foot pedal, a steering rod rotates and passes through the two support frames, a steering wheel is provided at the bottom end of the steering rod, and a steering wheel is provided at the top end of the steering rod.

[0012] Furthermore, each group of diagonal braces is provided with a fixing ring, one end of the transverse tie rod is rotatably connected to the fixing ring of one group of diagonal braces, and the other end of the transverse tie rod is movable hooked in the fixing ring of another group of diagonal braces.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) When a person is working on the top of the ladder body and needs to move the ladder body, the person can drive the ladder body to move through the power-assisting assembly, without the need for the person to climb up and down multiple times, thereby saving the time of moving the ladder body and improving work efficiency.

[0015] (2) After a person steps on the power-assisting pedal, the power-assisting pedal drives the power-assisting support rod to move through the rotating rod. The power-assisting support rod is supported on the ground. The power-assisting support rod can push the ladder body forward under the reaction force of the ground. After moving a certain distance, the person lifts his foot, and the first torsion spring drives the power-assisting pedal to rotate upward and return to the initial position. The second torsion spring drives the power-assisting support rod back to the initial position. In this reciprocating manner, the ladder body can be moved. The power-assisting components are arranged in two groups and are arranged on both sides of the ladder body, so that the ladder body can be moved forward and backward.

[0016] (3) When the ladder body is moved to the working area, the personnel can lock the universal wheel at the top of the ladder body. The operating rod is pushed downward so that the operating rod is stuck in the locking groove. The operating rod drives the locking rod to move downward. The locking rod presses against the universal wheel, thereby locking the universal wheel and improving the stability of the ladder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a mobile herringbone ladder;

[0019] Figure 2 is a cross-sectional view of the locking assembly;

[0020] Figure 3 It is a schematic diagram of the structure of the power assist component;

[0021] Explanation of the reference numerals in the accompanying drawings: 1. ladder body; 10. diagonal support rod; 11. ladder beam; 12. hinge; 13. foot rod; 2. transverse tie rod; 20. fixed ring; 3. traveling wheel; 30. universal wheel; 4. locking assembly; 40. locking rod; 41. operating rod; 42. sliding groove; 43. locking groove; 44. supporting ring; 45. supporting groove; 46. spring; 5. power-assisting assembly; 50. fixing rod; 51. power-assisting pedal; 510. accommodating groove; 52. first torsion spring; 53. rotating rod; 54. power-assisting support rod; 55. second torsion spring; 56. abutment block; 57. limiting rod; 6. steering assembly; 60. supporting frame; 61. steering rod; 62. steering wheel; 63. steering wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0023] The following is combined with Figure 1 To Attachment Figure 3 And specific embodiments describe the present invention in detail.

[0024] Reference Figure 1-3The utility model provides a mobile herringbone ladder, including a ladder body 1, the ladder body 1 includes two groups of diagonal braces 10, the two groups of diagonal braces 10 are arranged at a certain angle and form an isosceles triangle with the ground, each group of diagonal braces 10 includes two diagonal braces 10, a ladder beam 11 is fixedly connected between the tops of the two diagonal braces 10 in each group, and the two ladder beams 11 are connected together by a hinge 12, and a plurality of footrests 13 are vertically fixedly connected between the two diagonal braces 10 in each group. In this embodiment, two footrests 13 are provided.

[0025] A transverse tie rod 2 is arranged between the two groups of diagonal struts 10, and a fixing ring 20 is fixedly connected to each group of diagonal struts 10. One end of the transverse tie rod 2 is rotatably connected to the fixing ring 20 of one group of diagonal struts 10, and the other end of the transverse tie rod 2 is movable hooked in the fixing ring 20 of the other group of diagonal struts. The transverse tie rod 2 limits the angle between the two groups of diagonal struts 10 through the fixing rings 20 at both ends, so that the two groups of diagonal struts 10 are supported stably.

[0026] A traveling wheel 3 is installed at the bottom end of each diagonal support rod 10. In this embodiment, the traveling wheel 3 is a universal wheel 30, which can improve the mobility of the stepladder; a locking assembly 4 for locking the universal wheel 30 is arranged in each diagonal support rod 10, and the locking assembly 4 includes a locking rod 40, which is slidably inserted into the diagonal support rod 10 along the length direction of the diagonal support rod 10, and the bottom end of the locking rod 40 passes through the diagonal support rod 10 and movably abuts against the universal wheel 30, and an operating rod 41 is fixedly connected to the top end of the locking rod 40, and a sliding groove 42 and a locking groove 43 are opened in the diagonal support rod 10, and the sliding groove 42 is arranged along the length direction of the diagonal support rod 10, and the locking groove 43 is located at the bottom end of the sliding groove 42 and communicates with the sliding groove 42, and the operating rod 41 is movably arranged in the sliding groove 42 and the locking groove 43.

[0027] A support ring 44 is also fixedly connected to the locking rod 40, and a support groove 45 is opened inside the diagonal support rod 10. The support ring 44 is slidably set in the support groove 45. A spring 46 is fixedly connected between the support ring 44 and the groove wall of the support groove 45. The spring 46 is located below the support ring 44 and can push the support ring 44 to move upward.

[0028] Each group of diagonal braces 10 is provided with a power assist assembly 5, which includes a fixed rod 50, which is fixedly connected between two diagonal braces 10 in the same group, and a power assist pedal 51 is rotatably connected to the fixed rod 50, and the power assist pedal 51 is arranged obliquely upward, and a first torsion spring 52 is sleeved on the fixed rod 50, and the first torsion spring 52 has a tendency to drive the power assist pedal 51 to rotate upward; a receiving groove 510 is provided in the power assist pedal 51, and a rotating rod 53 is rotatably connected to the groove wall of the receiving groove 510, and a power assist brace rod 54 is fixedly connected to the rotating rod 53, and the bottom end of the power assist brace rod 54 is movably abutted against the ground. The power-assisting support rod 54 is located in the middle position between the two oblique support rods 10, and a second torsion spring 55 is sleeved on the rotating rod 53, and the second torsion spring 55 has the tendency to drive the power-assisting support rod 54 to rotate toward the direction close to the pedal rod 13; an abutment block 56 is fixedly connected to the pedal rod 13, and the power-assisting support rod 54 is mounted on the abutment block 56; a limit rod 57 is also fixedly connected between the two oblique support rods 10 of the same group, and the limit rod 57 is located above the fixed rod 50, and the power-assisting pedal 51 abuts against the limit rod 57. The limit rod 57 can limit the power-assisting pedal 51 from excessively rotating upward, so that the power-assisting pedal 51 is in a tilted upward state.

[0029] A steering assembly 6 is provided on one side of the ladder body 1, and the steering assembly 6 includes two support frames 60, the support frames 60 are fixedly connected to the foot pedal 13, a steering rod 61 rotates between the two support frames 60 and passes through, a steering wheel 62 is fixedly installed at the bottom end of the steering rod 61, and a steering wheel 63 is fixedly connected to the top end of the steering rod 61.

[0030] The implementation principle of the mobile herringbone ladder provided by the utility model is as follows: before climbing up, the ladder body 1 is first moved to the working area, and then the operating rod 41 is pulled downward to make the operating rod 41 stuck in the locking groove 43, the operating rod 41 drives the locking rod 40 to move downward, and the bottom end of the locking rod 40 is pressed against the universal wheel 30, thereby locking the universal wheel 30, and the personnel can climb to the top of the ladder body 1 to work; when the ladder body 1 needs to be moved, the operating rod 41 is rotated to make the operating rod 41 disengage from the locking groove 43, the spring 46 pushes the locking rod 40 to move upward through the supporting ring 44, the locking rod 40 is away from the universal wheel 30, and the lock of the universal wheel 30 is released, and then the power-assisting pedal 51 is stepped on, the power-assisting pedal 51 drives the power-assisting support rod 54 to rotate downward, the power-assisting support rod 54 is pressed against the ground, and the power-assisting support rod 54 is subjected to the reaction force of the ground to push the ladder body 1 to move forward, and the personnel can adjust the moving direction of the ladder body 1 through the steering wheel 63. Therefore, when moving the ladder body 1, the personnel do not need to climb up and down many times, and can complete the movement of the ladder body 1 by sitting on the top of the ladder body 1, which saves the moving time of the ladder body 1 and improves the working efficiency.

[0031] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model.

Claims

1. A mobile herringbone ladder, characterized in that: The ladder body comprises two groups of diagonal support rods, which are arranged at a certain angle between the two groups of diagonal support rods, each group of the diagonal support rods comprises at least two diagonal support rods, a ladder beam is arranged at the top of each group of the diagonal support rods, and the two ladder beams are connected together by hinges, a plurality of foot rods are arranged between the two diagonal support rods in each group, a transverse tie rod is arranged between the two groups of the diagonal support rods, a traveling wheel is arranged at the bottom of each of the diagonal support rods, and a power assist component for pushing the ladder body to move is arranged on each group of the diagonal support rods.

2. The mobile stepladder according to claim 1, characterized in that: The power-assisting assembly includes a fixed rod arranged between the two oblique support rods, a power-assisting pedal is rotatably connected to the fixed rod, a first torsion spring is sleeved on the fixed rod for driving the power-assisting pedal to rotate upward, a receiving groove is provided in the power-assisting pedal, a rotating rod is rotatably connected to the groove wall of the receiving groove, a power-assisting support rod is arranged on the rotating rod, and the bottom end of the power-assisting support rod is movably contacted with the ground.

3. The mobile stepladder according to claim 2, characterized in that: The rotating rod is sleeved with a second torsion spring, and the second torsion spring can drive the power-assisting support rod to rotate in a direction close to the pedal rod.

4. The mobile stepladder according to claim 2, characterized in that: A limit rod is arranged between the two diagonal support rods, the limit rod is located above the fixing rod, and the power pedal abuts against the limit rod.

5. The mobile stepladder according to claim 1, characterized in that: The traveling wheel is a universal wheel.

6. The mobile stepladder according to claim 1, characterized in that: The locking assembly for locking the traveling wheel is provided in the diagonal support rod, and the locking assembly includes a locking rod, the locking rod is slidably arranged in the diagonal support rod along the length direction of the diagonal support rod, the bottom end of the locking rod passes through the diagonal support rod and movably abuts against the traveling wheel, and an operating rod is provided at the top of the locking rod, a sliding groove and a locking groove are provided in the diagonal support rod, the sliding groove is provided along the length direction of the diagonal support rod, the locking groove is located at the bottom end of the sliding groove and is communicated with the sliding groove, the operating rod is movably arranged in the sliding groove and the locking groove, and a supporting ring is also provided on the locking rod, a supporting groove is provided in the diagonal support rod, the supporting ring is movably arranged in the supporting groove, a spring is provided between the supporting ring and the groove wall of the supporting groove, and the spring is located below the supporting ring and pushes the supporting ring to move upward.

7. The mobile stepladder according to claim 1, characterized in that: A steering assembly is arranged on one side of the ladder body, and the steering assembly includes at least two support frames, the support frames are arranged on the foot pedal, a steering rod rotates between the two support frames and passes through, a steering wheel is arranged at the bottom end of the steering rod, and a steering wheel is arranged at the top end of the steering rod.

8. The mobile stepladder according to claim 1, characterized in that: Each group of the diagonal braces is provided with a fixing ring, one end of the transverse tie rod is rotatably connected to the fixing ring of one group of the diagonal braces, and the other end of the transverse tie rod is movably hooked to the fixing ring of another group of the diagonal braces.

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