Auxiliary ladder rack arrangement for an aerial ladder

Abstract

The utility model belongs to the auxiliary technical field of ladder car, provide a kind of ladder car's auxiliary ladder frame device, including chassis and the support device being set on chassis;The chassis corresponds with the top frame of ladder car, and the chassis is placed in the top frame when using;The bottom of the support device is detachably fixed with the chassis, and the support device includes liftable support piece.The utility model can satisfy the temporary heightening demand in the process of catenary routine maintenance, is favorable to efficient and low-cost low completion maintenance construction, and good safety.

Description

Technical Field

[0001] This utility model relates to an auxiliary device for a ladder truck, specifically an auxiliary ladder frame device for a ladder truck. Background Technology

[0002] During routine maintenance of flexible overhead contact lines, insufficient working height is a frequent problem, preventing some equipment from being effectively operated from designated positions. To temporarily address this, workers sometimes step on the frame of ladder trucks, posing a significant safety hazard and increasing the risk of falls. Using engineering vehicles for high-altitude operations requires high scheduling costs and is inefficient, failing to meet the demands of rapid routine maintenance. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an auxiliary ladder frame device for a ladder truck. This device can meet the temporary heightening needs during the daily maintenance of the overhead contact line, which is conducive to completing maintenance construction efficiently and at low cost, and has good safety.

[0004] The technical solution adopted by this utility model to solve its technical problem is: An auxiliary ladder frame device for a ladder truck includes a base frame and a support device mounted on the base frame. The base frame corresponds to the top frame of the ladder truck, and is placed within the top frame during use. The bottom of the support device is detachably fixed to the base frame, and the support device includes a liftable support member. In this embodiment, the support member can be used to support the contact wire, eliminating the need for manual support during contact wire maintenance, reducing construction difficulty, and improving construction safety. Furthermore, the support member in this embodiment has a lifting function, allowing for flexible adjustment of its height according to the construction situation.

[0005] In a preferred embodiment of this utility model, the base frame includes a frame body and four legs, the four legs being arranged in a rectangular pattern. The frame body includes two opposing first connecting rods and a load-bearing member disposed between the two first connecting rods. The two ends of the two first connecting rods are respectively connected to the four legs.

[0006] Preferably, the first connecting rod is rotatably connected to the top of the support leg, and the support leg can be rotated to the bottom of the frame.

[0007] Preferably, a crossbar is provided between the legs located on the same side and connected to different first connecting rods, and a climbing frame is provided between the crossbar and the frame body. The two ends of the climbing frame are rotatably connected to the frame body and the crossbar, respectively, and the middle of the climbing frame is hinged.

[0008] In a preferred embodiment of the present invention, the bottom of the support device is provided with a base, which is supported on the first connecting rod and can be detachably fixed by a connecting component.

[0009] Preferably, the connecting assembly includes a U-shaped clamp and several locking components; the clamp is fastened to the first connecting rod from bottom to top and corresponds to the bottom surface of the base; in the assembled state, each of the locking components locks the clamp and the base together.

[0010] Preferably, the locking assembly includes a screw and two nuts; the base and the clamp are provided with holes at their ends; in the assembled state, the screw passes through the holes in the clamp and the base, and the two nuts pass through the two ends of the screw and respectively abut against the clamp and the base.

[0011] In a preferred embodiment of this utility model, the top surface of the support member is provided with a groove.

[0012] In a preferred embodiment of the present invention, the support device further includes a lifting adjustment mechanism for controlling the height position of the support member; The lifting and adjusting mechanism includes a fixed cylinder, a push rod, a pressing handle, a push plate, and a pressure plate. A fixed frame is provided at the upper end of the fixed cylinder. The push rod is movable and vertically within the fixed cylinder and extends upwards. A support member is connected to the upper end of the push rod. The pressing handle is rotatably connected to the fixed frame. The push plate is located within the fixed frame. The push rod can drive the push plate upwards, and the push plate moves with the rotation of the pressing handle. A first elastic element is provided between the push plate and the fixed frame to cause the push plate and the pressing handle to reset. The pressure plate is located within the fixed frame and has a clearance hole for the push rod to pass through. A second elastic element is provided between the pressure plate and the fixed frame. Under the elastic force of the second elastic element, the pressure plate tilts and locks the push rod to prevent it from descending.

[0013] In a preferred embodiment of this utility model, the support device is provided with at least two.

[0014] Compared with the prior art, the beneficial effects of this utility model are: The auxiliary ladder frame device of this utility model can be applied to the ladder truck to conveniently and quickly increase the construction height of the ladder truck and improve construction safety. At the same time, the support device can support the contact rope or other construction objects, making it convenient for operators to carry out maintenance. Furthermore, the support components on the support device have a lifting function, which is highly flexible. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of the auxiliary ladder frame device for the ladder truck of this utility model.

[0017] Figure 2 This is a perspective view of the auxiliary ladder frame device for the ladder truck of this utility model.

[0018] Figure 3 for Figure 2 A schematic diagram of the base frame being folded and stored.

[0019] Figure 4 for Figure 2 A partial enlarged view of the middle base and the first connecting rod.

[0020] Figure 5 This is a 3D view of the lifting and adjusting mechanism.

[0021] in: 1-Base frame, 2-Support device, 3-Support component, 4-Feet, 5-First connecting rod, 6-Second connecting rod, 7-Horizontal bar, 8-Ladder, 9-Base, 10-Clamping hoop, 11-Fixing cylinder, 12-Pressing handle, 13-Screw, 14-Nut, 15-Push rod, 16-Fixing frame, 17-Push plate, 18-Pressure plate, 19-First elastic element, 20-Groove, 21-Second elastic element. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0024] See Figures 1-5 This embodiment discloses an auxiliary ladder frame device for a ladder truck, including a base frame 1 and at least two support devices 2 mounted on the base frame 1. The base frame 1 corresponds to the top frame of the ladder truck, and is placed within the top frame during use. The bottom of the support device 2 is detachably fixed to the base frame 1, and the support device 2 includes a liftable support member 3. In this embodiment, the support member 3 can be used to support the contact wire, eliminating the need for manual support during contact wire maintenance, reducing construction difficulty, and improving construction safety. Furthermore, the support member 3 in this embodiment has a lifting function, allowing for flexible adjustment of its height according to the construction situation.

[0025] Furthermore, the base frame 1 in this embodiment includes a frame body and four legs 4, which are rectangularly distributed. The frame body includes two opposing first connecting rods 5 and a load-bearing member disposed between the two first connecting rods 5. The two ends of the two first connecting rods 5 are respectively connected to the four legs 4. The load-bearing member can be a plate structure or a rod structure, which can be flexibly selected. In this embodiment, a rod structure load-bearing member is selected. Specifically, the load-bearing member in this embodiment includes several second connecting rods 6, which are spaced apart to form a flat surface for workers to step on. At the same time, the first connecting rods 5 in this embodiment are rotatably connected to the top of the legs 4, and the legs 4 can rotate to the bottom of the frame body. Furthermore, both ends of the first connecting rods 5 in this embodiment are provided with slots, and the top of the legs 4 is rotatably connected to the first connecting rods 5 by pins or other accessories. In this way, the frame has a folding function, which is convenient for transportation and storage.

[0026] Furthermore, a crossbar 7 is provided between the legs 4 located on the same side and connected to different first connecting rods 5. A climbing frame 8 is provided between the crossbar 7 and the frame body. The two ends of the climbing frame 8 are rotatably connected to the frame body and the crossbar 7, respectively, and the middle of the climbing frame 8 is hinged. The climbing frame 8 facilitates workers to climb onto the frame body via the crossbar 7 and the climbing frame 8. Because the climbing frame 8 is hinged in the middle and can rotate with the frame body and the crossbar 7, it can be folded together with the frame body and the legs 4.

[0027] This embodiment employs two support devices 2, each with a base 9 at its bottom. The base 9 is supported on the first connecting rod 5 and is detachably fixed via a connecting assembly. The connecting assembly includes a U-shaped clamp 10 and several locking components. The clamp 10 is fastened to the first connecting rod 5 from bottom to top and corresponds to the bottom surface of the base 9. In the assembled state, each locking component locks the clamp 10 and the base 9 together. The locking components include a screw 13 and two nuts 14. Holes are provided at the ends of both the base 9 and the clamp 10. In the assembled state, the screw 13 passes through the holes in the clamp 10 and the base 9, and the two nuts 14 pass through both ends of the screw 13 and respectively abut against the clamp 10 and the base 9.

[0028] Furthermore, the top surface of the support member 3 is provided with a groove 20. In this way, the contact wire can be placed in the groove 20 of the support member 3, thereby improving the stability of the support for the contact wire.

[0029] In this embodiment, the support device 2 controls the height of the support member 3 through a lifting adjustment mechanism. This mechanism includes a fixed cylinder 11, a push rod 15, a pressing handle 12, a push plate 17, and a pressure plate 18. A fixed frame 16 is provided at the upper end of the fixed cylinder 11. The push rod 15 is movably mounted within the fixed cylinder 11 and extends upwards. The support member 3 is connected to the upper end of the push rod 15. The pressing handle 12 is rotatably connected to the fixed frame 16. The push plate 17 is located within the fixed frame 16, and the push rod 15 can drive the push plate. 17 rises and push plate 17 moves with the rotation of pressing handle 12. A first elastic element 19 is provided between push plate 17 and fixed frame 16 to cause push plate 17 and pressing handle 12 to reset. In this embodiment, a spring is used. Press plate 18 is located in fixed frame 16 and is provided with clearance hole for push rod 15 to pass through. A second elastic element 21 is provided between press plate 18 and fixed frame 16. In this embodiment, a spring is used. Under the elastic force of second elastic element 21, press plate 18 tilts and jams push rod 15 to prevent it from falling.

[0030] The lifting and adjusting mechanism of this embodiment can refer to the glue gun in the prior art. It mainly uses the lever principle to control the lifting of the support member 3. Specifically, when it is necessary to lift the support member 3, pressing the handle 12 downwards drives the push plate 17 and the push rod 15 to rise, thereby increasing the height of the support member 3. When the handle 12 is released, the push plate 17 and the handle 12 return to their original positions under the elastic force of the first elastic element 19, and the height of the push rod 15 remains unchanged under the restriction of the pressure plate 18. When it is necessary to lower or freely adjust the height of the support member 3, the pressure plate 18 is moved to make it no longer restrict or obstruct the push rod 15. At this time, the height of the push rod 15 can be freely adjusted, and the operator can pull the support member 3 to freely adjust its height. When the pressure plate 18 is released, the pressure plate 18 re-locks the push rod 15 under the elastic force of the second elastic element 21, so that the push rod 15 cannot descend.

[0031] In addition to the above-described implementation method, the lifting and adjusting mechanism of this embodiment can also employ other existing technologies to achieve the lifting and lowering of the support member 3 while keeping its height position fixed.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An auxiliary ladder frame device for a ladder truck, characterized in that, It includes a base frame and a support device mounted on the base frame; the base frame corresponds to the top frame of the ladder truck, and the base frame is placed in the top frame during use; the bottom of the support device is detachably fixed to the base frame, and the support device includes a liftable support component.

2. The auxiliary ladder frame device for the ladder car according to claim 1, characterized in that, The base frame includes a frame body and four legs, which are arranged in a rectangular shape. The frame body includes two opposing first connecting rods and a load-bearing member disposed between the two first connecting rods. The two ends of the two first connecting rods are respectively connected to the four legs.

3. The auxiliary ladder frame device for the ladder car according to claim 2, characterized in that, The first connecting rod is rotatably connected to the top of the support leg, and the support leg can be rotated to the bottom of the frame.

4. The auxiliary ladder frame device for the ladder car according to claim 3, characterized in that, A crossbar is provided between the legs located on the same side and connected to different first connecting rods. A climbing frame is provided between the crossbar and the frame body. The two ends of the climbing frame are rotatably connected to the frame body and the crossbar, respectively, and the middle of the climbing frame is hinged.

5. The auxiliary ladder frame device for a ladder car according to any one of claims 2-4, characterized in that, The support device has a base at its bottom, which is supported on the first connecting rod and can be detachably fixed by a connecting component.

6. The auxiliary ladder frame device for the ladder car according to claim 5, characterized in that, The connecting assembly includes a U-shaped clamp and several locking components; the clamp is fastened to the first connecting rod from bottom to top and corresponds to the bottom surface of the base; in the assembled state, each of the locking components locks the clamp and the base together.

7. The auxiliary ladder frame device for the ladder car according to claim 6, characterized in that, The locking assembly includes a screw and two nuts; the base and the clamp are provided with holes at their ends; in the assembled state, the screw passes through the holes in the clamp and the base, and the two nuts pass through the two ends of the screw and respectively abut against the clamp and the base.

8. The auxiliary ladder frame device for the ladder car according to claim 1, characterized in that, The top surface of the support member is provided with a groove.

9. The auxiliary ladder frame device for the ladder car according to claim 1, characterized in that, The support device also includes a lifting and adjusting mechanism for controlling the height position of the support member; The lifting and adjusting mechanism includes a fixed cylinder, a push rod, a pressing handle, a push plate, and a pressure plate. A fixed frame is provided at the upper end of the fixed cylinder. The push rod is movable and vertically within the fixed cylinder and extends upwards. A support member is connected to the upper end of the push rod. The pressing handle is rotatably connected to the fixed frame. The push plate is located within the fixed frame. The push rod can drive the push plate upwards, and the push plate moves with the rotation of the pressing handle. A first elastic element is provided between the push plate and the fixed frame to cause the push plate and the pressing handle to reset. The pressure plate is located within the fixed frame and has a clearance hole for the push rod to pass through. A second elastic element is provided between the pressure plate and the fixed frame. Under the elastic force of the second elastic element, the pressure plate tilts and locks the push rod to prevent it from descending.

10. The auxiliary ladder frame device for the ladder car according to claim 1, characterized in that, The support device is provided in at least two parts.

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