A maintenance rack for electrical engineering

Abstract

The utility model provides a kind of maintenance frame for electric power engineering, including mobile frame body, support leg, support block, installation cavity, adjusting rod, adjusting mechanism, foot pedal rod, telescopic link, first spring and gyro wheel;When mobile frame body moves to appropriate position, maintenance man lifts one side of mobile frame body, then pushes foot pedal rod with foot, and telescopic link is pushed out from gap, then mobile frame body can be put down, under the action of gravity of mobile frame body, first spring is compressed while gyro wheel moves upward, when gyro wheel is flush with the bottom surface of support block, gyro wheel is retracted inside installation cavity, support block contacts ground at this time, since the contact between support block and ground is surface contact, so relative to the form of linear contact between traditional gyro wheel and ground, contact area has been greatly improved, to prevent that maintenance frame is prone to shaking during maintenance process, which is not conducive to the safe maintenance of maintenance man.

Description

Technical Field

[0001] This utility model belongs to the field of maintenance rack technology, and mainly relates to a maintenance rack for power engineering. Background Technology

[0002] A stable power supply is crucial for maintaining social production and development. As the primary contributors to power supply, ensuring the safe operation of electrical equipment is paramount. Regular maintenance and repair of malfunctioning equipment are essential. Because some electrical equipment is located at high elevations, repair scaffolds are necessary as auxiliary tools to facilitate maintenance.

[0003] To facilitate movement, existing maintenance racks typically have omnidirectional casters with brakes at the bottom. Once moved to the designated location, the brakes are applied, and workers climb onto the workbench of the rack to perform maintenance. However, because the bottom of the rack is in direct contact with the ground via the casters during use, the contact area is small. Therefore, even when the casters are locked, the rack is still prone to wobbling during use, which is detrimental to the safety of maintenance personnel. Utility Model Content

[0004] The purpose of this invention is to design a maintenance rack for power engineering to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: it includes a movable frame, a support leg installed at the bottom of the movable frame, and a support block fixed to the bottom of the support leg. The support block has an internal mounting cavity, and an adjusting rod is slidably connected inside the mounting cavity. The support block is provided with an adjusting mechanism for adjusting the movement of the adjusting rod along the axial direction of the mounting cavity. The bottom of the adjusting rod is provided with a roller, and the roller extends or retracts into the mounting cavity under the action of the adjusting mechanism.

[0006] Furthermore, the bottom of the support block is trumpet-shaped.

[0007] Furthermore, an insulating rubber plate is also fixed to the bottom of the support block.

[0008] Furthermore, the support block is provided with several reinforcing ribs.

[0009] Furthermore, the mounting cavity is provided with a guide post, the adjusting rod is slidably connected to the guide post, the guide post is provided with a boss, and the adjusting rod is provided with a groove that mates with the boss.

[0010] Furthermore, a movable plate is fixedly connected to the end of the adjusting rod located below the guide post, and the roller is fixedly connected to the bottom of the movable plate. The adjusting rod is provided with several notches. The adjusting mechanism includes a limiting rod, a telescopic component for driving the end of the limiting rod to extend or insert into the notch, and a first spring for connecting the movable plate and the guide post. The adjusting rod is located inside the first spring. The limiting rod cooperates with the notches of different heights to make the roller extend or retract into the mounting cavity.

[0011] Furthermore, a plurality of positioning platforms are provided on the inner wall of the mounting cavity located below the guide post.

[0012] Furthermore, the telescopic assembly includes a fixed cylinder fixed to the side wall of the support block, a telescopic rod slidably connected to the inside of the fixed cylinder, a frustum fixed to the telescopic rod, and a slide plate fixed to one end of the telescopic rod near the adjusting rod. The fixed cylinder has a sliding cavity slidably connected to the frustum, a sliding groove cooperating with the slide plate, and a second spring disposed between the ends of the frustum and the sliding cavity. The sliding groove communicates with the sliding cavity. The end of the telescopic rod passes through the sliding cavity and is located inside the second spring. The end of the telescopic rod is inserted into the notch under the action of the second spring.

[0013] Furthermore, a crossbar, an inclined bar, and a foot pedal are sequentially fixed to the end of the telescopic rod that passes through the sliding cavity, and two foot pedals located on the same side of the movable frame are fixed together.

[0014] Furthermore, the inclined rod is arranged outward and inclined upward, and the angle between the inclined rod and the telescopic rod is 15°~30°.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: After the mobile frame is moved to the appropriate position, the maintenance worker lifts one side of the mobile frame, then pushes the foot pedal with his foot and pushes the telescopic rod out of the notch, and then the mobile frame can be lowered. Under the gravity of the mobile frame, the first spring is compressed and the roller moves upward. When the roller is flush with the bottom surface of the support block, the roller retracts into the installation cavity. At this time, the support block contacts the ground. Since the contact between the support block and the ground is a surface contact, the contact area is greatly improved compared with the traditional line contact between the roller and the ground. This prevents the maintenance frame from easily shaking during the maintenance process, which is not conducive to the safe maintenance of the maintenance worker. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the support block.

[0020] The components are: 1. Movable frame; 2. Ladder; 3. Support leg; 4. Support block; 5. Reinforcing rib; 6. Foot pedal; 7. Fixing cylinder; 8. Groove; 9. Adjusting rod; 10. First spring; 11. Notch; 12. Inclined rod; 13. Crossbar; 14. Slide groove; 15. Slide table; 16. Second spring; 17. Frustum; 18. Telescopic rod; 19. Movable plate; 20. Positioning table; 21. Roller; 22. Insulating rubber plate; 23. Boss; 24. Sliding cavity. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] Example: Please refer to Figures 1-3 A maintenance frame for power engineering includes a movable frame body 1, support legs 3 installed at the bottom of the movable frame body 1, and support blocks 4 fixed to the bottom of the support legs 3. The movable frame body 1 includes a workbench and a ladder 2 installed between the support legs 3 for easy climbing by workers. The support block 4 has an internal mounting cavity, with an adjusting rod 9 slidably connected inside. The support block 4 has an adjusting mechanism for adjusting the movement of the adjusting rod 9 along the axis of the mounting cavity. The bottom of the adjusting rod 9 has a roller 21, which extends or retracts into the mounting cavity under the action of the adjusting mechanism. Therefore, when the movable frame body 1 needs to be moved, only the roller 21 needs to be extended from the mounting cavity. At this time, there is a gap between the support block 4 and the bottom, so the mobile frame 1 can be moved directly, which facilitates the handling of the mobile frame 1. When the mobile frame 1 is moved to the appropriate position, the roller 21 only needs to be retracted into the mounting cavity. At this time, the bottom of the support block 4 contacts the ground. Since the contact between the support block 4 and the ground is a surface contact, the contact area is greatly improved compared with the traditional line contact between the roller 21 and the ground. This increases the contact area between the entire maintenance frame and the ground during operation, preventing the maintenance frame from shaking easily due to the direct support of the roller 21 to the ground during maintenance, which is not conducive to the safe maintenance of the maintenance personnel.

[0023] In this embodiment, the bottom of the support block 4 is flared, narrow at the top and wide at the bottom, which further increases the contact area between the maintenance frame and the ground during maintenance. The bottom of the support block 4 is also fixed with an insulating rubber plate 22, which helps to insulate the maintenance frame from the ground, prevents slipping, and also prevents the generation of a current loop that could lead to electric shock. In addition, the support block 4 is provided with several reinforcing ribs 5, which improves the support strength of the support block 4.

[0024] In other embodiments, a guide post is provided inside the mounting cavity, and the adjusting rod 9 is slidably connected to the guide post. A boss 23 is provided inside the guide post, and a groove 8 that mates with the boss 23 is provided on the adjusting rod 9 to prevent rotation and ensure stable movement of the adjusting rod 9. A movable plate 19 is fixedly connected to the end of the adjusting rod 9 located below the guide post, and a roller 21 is fixedly connected to the bottom of the movable plate 19. The connection between the movable plate 19 and the roller 21 is a common type, and the roller 21 can be a universal roller 21. The adjusting rod 9 has several notches 11. The adjusting mechanism includes a limiting rod, a telescopic assembly for driving the end of the limiting rod to extend out of or insert into the notch 11, and a first spring 10 for connecting the movable plate 19 and the guide post. The adjusting rod 9 is located on the first spring 10. Inside the mounting cavity, the limiting rod cooperates with notches 11 of different heights to allow the roller 21 to extend or retract into the mounting cavity. Therefore, when the roller 21 needs to be extended out of the mounting cavity, simply pull the limiting rod away from the notch 11, and the adjusting rod 9 will move downward under the action of the first spring 10 to extend out of the mounting cavity. After extending to the appropriate position, the limiting rod will re-insert into the notch 11, thereby ensuring the stable support of the roller 21 for the movable frame 1, and thus facilitating the movement of the movable frame 1. In addition, several positioning platforms 20 are provided on the inner wall of the mounting cavity located below the guide column. While limiting the moving distance of the movable plate 19, when the movable plate 19 moves to the positioning platform 20, the notch 11 will be aligned with the limiting rod, thereby facilitating the cooperation between the limiting rod and the notch 11.

[0025] In other embodiments, the telescopic assembly includes a fixed cylinder 7 fixed to the side wall of the support block 4, a telescopic rod 18 slidably connected to the inside of the fixed cylinder 7, a frustum 17 fixed to the telescopic rod 18, and a slide 15 fixed to one end of the telescopic rod 18 near the adjusting rod 9. The fixed cylinder 7 has a sliding cavity 24 slidably connected to the frustum 17, a sliding groove 14 cooperating with the slide 15, and a second spring 16 disposed between the ends of the frustum 17 and the sliding cavity 24. The sliding groove 14 communicates with the sliding cavity 24, and the end of the telescopic rod 18 passes through the sliding cavity 24. 18 is located inside the second spring 16. The end of the telescopic rod 18 is inserted into the notch 11 under the action of the second spring 16. Therefore, when the end of the telescopic rod 18 is pulled, the other end of the telescopic rod 18 will begin to disengage from the notch 11. When the telescopic rod 18 is released, the telescopic rod 18 will return to its original position and be inserted into the notch 11 under the action of the second spring 16. The length of the slide groove 14 is greater than the length of the telescopic rod 18 inserted into the notch 11. The end of the slide groove 14 away from the notch 11 serves to limit the slide table 15 and prevent the second spring 16 from being over-compressed.

[0026] Furthermore, the ends of the telescopic rod 18 that penetrates the sliding cavity 24 are sequentially fixed with a crossbar 13, an inclined rod 12, and a foot pedal 6. Two foot pedals 6 on the same side of the movable frame 1 are fixedly connected. Therefore, when it is necessary to change the state of the roller 21, the maintenance worker only needs to stand next to the ladder 2, lift one side of the movable frame 1 with both hands through the ladder 2, and then push the foot pedal 6 with their foot. This pushes the telescopic rod 18 out through the inclined rod 12 and the crossbar 13, thereby separating the telescopic rod 18 from the notch 11. At this point, the roller 21 can be extended or retracted into the mounting cavity. The action; in addition, the elastic force generated when the first spring 10 deforms is never greater than half (approximately) of the weight of the entire mobile frame 1, so as to ensure that when the roller 21 retracts, it can retract directly under the weight of the mobile frame 1. After retraction, the telescopic rod 18 will be reset under the action of the second spring 16 and inserted into the next notch 11; in other embodiments, the tilting rod 12 is arranged outward and tilted upward, and the angle between the tilting rod 12 and the telescopic rod 18 is 15°~30°, so as to facilitate the maintenance personnel to push the foot pedal 6.

[0027] Working principle: After the mobile frame 1 is moved to the appropriate position, the maintenance worker stands next to the ladder 2, lifts one side of the mobile frame 1 with both hands through the ladder 2, and then pushes the foot pedal 6 with his foot, thereby pushing out the telescopic rod 18 through the tilting rod 12 and the crossbar 13, realizing the disengagement of the telescopic rod 18 from the notch 11. At this time, the mobile frame 1 can be lowered. Under the action of the gravity of the mobile frame 1, the first spring 10 is compressed, and the roller 21 will move upward. When the roller 21 is flush with the bottom surface of the insulating rubber plate 22, the foot pedal 6 can be released, and the telescopic rod 1... 8 will be reset under the action of the second spring 16 and inserted into the next notch 11, thereby retracting the roller 21 into the mounting cavity; at this time, the insulating rubber plate 22 is in contact with the ground. Since the contact between the insulating rubber plate 22 and the ground is a surface contact, the contact area is greatly improved compared with the traditional line contact between the roller 21 and the ground. This prevents the maintenance frame from shaking during maintenance due to the direct support of the roller 21 to the ground, which is not conducive to the safe maintenance of the maintenance personnel.

[0028] When it is necessary to move the mobile frame 1, the maintenance worker only needs to stand next to the ladder 2, first push the foot pedal 6 with his foot to extend the telescopic rod 18, and then lift one side of the mobile frame 1 through the ladder 2. During the lifting process, the roller 21 extends out of the mounting cavity under the action of the first spring 10. When the moving plate 19 abuts against the positioning platform 20, the foot pedal 6 is released, and the telescopic rod 18 will be reset under the action of the second spring 16 and inserted into the notch 11. At this time, the mobile frame 1 can be pushed to other positions.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0030] 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. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A maintenance frame for power engineering, characterized in that, The device includes a movable frame (1), a support leg (3) installed at the bottom of the movable frame (1), and a support block (4) fixed to the bottom of the support leg (3). The support block (4) has an installation cavity inside, and an adjusting rod (9) is slidably connected inside the installation cavity. The support block (4) is provided with an adjusting mechanism for adjusting the adjusting rod (9) to move along the axial direction of the installation cavity. The bottom of the adjusting rod (9) is provided with a roller (21), and the roller (21) extends out or retracts into the installation cavity under the action of the adjusting mechanism. The mounting cavity is provided with a guide post, the adjusting rod (9) is slidably connected to the guide post, the guide post is provided with a boss (23), and the adjusting rod (9) is provided with a groove (8) that cooperates with the boss (23); A movable plate (19) is fixedly connected to the end of the adjusting rod (9) located below the guide post. The roller (21) is fixedly connected to the bottom of the movable plate (19). The adjusting rod (9) is provided with several notches (11). The adjusting mechanism includes a limiting rod, a telescopic component for driving the end of the limiting rod to extend or insert into the notch (11), and a first spring (10) for connecting the movable plate (19) and the guide post. The adjusting rod (9) is located inside the first spring (10). The limiting rod cooperates with the notches (11) of different heights to make the roller (21) extend or retract into the mounting cavity.

2. The maintenance frame for power engineering according to claim 1, characterized in that, The bottom of the support block (4) is trumpet-shaped.

3. The maintenance frame for power engineering according to claim 1, characterized in that, An insulating rubber plate (22) is also fixed to the bottom of the support block (4).

4. The maintenance frame for power engineering according to claim 1, characterized in that, The support block (4) is provided with several reinforcing ribs (5).

5. The maintenance frame for power engineering according to claim 1, characterized in that, A plurality of positioning platforms (20) are provided on the inner wall of the mounting cavity located below the guide post.

6. The maintenance frame for power engineering according to claim 1, characterized in that, The telescopic assembly includes a fixed cylinder (7) fixed to the side wall of the support block (4), a telescopic rod (18) slidably connected to the inside of the fixed cylinder (7), a frustum (17) fixed to the telescopic rod (18), and a slide (15) fixed to one end of the telescopic rod (18) near the adjusting rod (9). The fixed cylinder (7) has a sliding cavity (24) slidably connected to the frustum (17), a sliding groove (14) cooperating with the slide (15), and a second spring (16) located between the ends of the frustum (17) and the sliding cavity (24). The sliding groove (14) communicates with the sliding cavity (24). The end of the telescopic rod (18) passes through the sliding cavity (24) and the telescopic rod (18) is located inside the second spring (16). The end of the telescopic rod (18) is inserted into the notch (11) under the action of the second spring (16).

7. The maintenance frame for power engineering according to claim 6, characterized in that, The end of the telescopic rod (18) that passes through the sliding cavity (24) is fixedly connected to a crossbar (13), an inclined rod (12) and a foot pedal (6) in sequence. Two foot pedals (6) located on the same side of the movable frame (1) are fixedly connected.

8. The maintenance frame for power engineering according to claim 7, characterized in that, The inclined rod (12) is arranged outward and inclined upward, and the angle between the inclined rod (12) and the telescopic rod (18) is 15°~30°.

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