A lower layer circuit breaker pulling and fixing structure for a lifting service trolley

Abstract

The present invention relates to the technical field of service trolleys, and discloses a lower-layer circuit breaker pulling and fixing structure for a lifting service trolley, comprising a lifting service trolley, wherein a tray is slidably connected to the interior of the lifting service trolley, the tray is lifted and lowered by a hydraulic cylinder, the bottom end of the tray is symmetrically slidably connected to a locking rod, a fixing plate is clamped on both sides of the tray, the side wall of the tray above the fixing plate is rotatably connected to a baffle, the top of the fixing plate is fixedly connected to a support plate, and the bottom end of the support plate is rotatably connected to a hook ring. The present invention can be easily installed and disassembled, so that when it is necessary to remove the circuit breaker below, it can be quickly put into working state, and at the same time, the entire lifting service trolley can be moved and guided to form a lateral limit with the circuit breaker cabinet. When working, it can also be stably interlocked with the circuit breaker cabinet by rotating the hook ring in the structure, so that the lifting service trolley can stably install and remove the circuit breakers above and below.

Description

Technical Field

[0001] The present invention relates to the technical field of service trolleys, in particular to a lower layer circuit breaker pulling and fixing structure for a lifting service trolley. Background Art

[0002] The lifting service trolley is a tool used to assist in taking the circuit breaker out of or putting it into the cabinet. It greatly saves the trouble of manual handling and reduces the existing safety risks, bringing great convenience to the entire work.

[0003] When the existing lifting service trolley is in operation, it is necessary to push the lifting service trolley to the side of the cabinet, then step on it to raise the tray to the specified position, and then rotate the locking rod to align it with the hole on the cabinet to lock the lifting trolley and the cabinet. At this time, the circuit breaker can be safely and stably pulled out onto the tray for easy removal and transportation.

[0004] However, today's lift service trolley can only remove circuit breakers in the middle and upper layers because the locking rod can only be inserted into the hole in the middle and upper layers. The bottom layer is the bottom of the cabinet, and the locking rod is blocked. Therefore, the lift service trolley cannot be locked with the circuit breaker cabinet. At this time, multiple staff members can only hold the lift service trolley firmly against the circuit breaker cabinet to safely remove the circuit breaker, which brings great trouble to the removal work.

[0005] Therefore, we propose a pull-out fixing structure for the lower circuit breaker of a lifting service trolley, which can be added at the tray position to facilitate the removal of the lower circuit breaker, to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a lower layer circuit breaker pulling and fixing structure for a lifting service trolley to solve the problems raised in the above background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A lifting service trolley is used for pulling out and fixing a lower circuit breaker, comprising a lifting service trolley, a tray being slidably connected to the interior of the lifting service trolley, the tray being lifted and lowered by a hydraulic cylinder, a locking rod being symmetrically slidably connected to the bottom end of the tray, a fixing plate being clamped on both sides of the tray, a baffle being rotatably connected to the side wall of the tray above the fixing plate, a support plate being fixedly connected to the top end of the fixing plate, a hook ring being rotatably connected to the bottom end of the support plate, a limit plate being fixedly connected to one side of the top end of the hook ring, a circuit breaker cabinet being provided on one side of the lifting service trolley, and a lower baffle being fixedly connected to the bottom end of the circuit breaker cabinet.

[0009] As a further solution of the present invention: the locking rod is L-shaped, and a solid elastic pin is fixedly connected to one side of the locking rod.

[0010] As a further solution of the present invention: the shape of the hook ring is U-shaped, and one side of the hook ring is fixedly connected to a fixing block.

[0011] As a further solution of the present invention: a clamping hole is formed on a side of the fixing block close to the locking rod, and the diameter of the clamping hole is larger than the diameter of one side of the locking rod.

[0012] As a further solution of the present invention: the maximum rotation angle of the hook is one hundred and eighty degrees, and when the hook is vertically downward, the inner wall is flush with the inner wall of the lower stop.

[0013] As a further solution of the present invention: through holes are evenly opened on one side of the fixing plate, and the size of the through holes is consistent with the size of the bolts on both sides of the tray.

[0014] As a further solution of the present invention: the lower end of the baffle is fixedly connected to a spring cylinder, the interior of the spring cylinder is slidably connected to a pull rod, and a limiting hole is correspondingly provided on the side wall of the fixed plate on one side of the pull rod.

[0015] As a further solution of the present invention: the outer surface of the pull rod is fixedly connected to one side of the spring inside the spring barrel.

[0016] As a further solution of the present invention: the distance between the inner wall of the baffle and the side wall of the tray is equal to the thickness of the fixed plate, and the bottom end of the baffle is flush with the bottom end of the fixed plate.

[0017] As a further solution of the present invention: the shape of the limiting plate is L-shaped, and one side of the limiting plate is fixedly connected to an inclined plate.

[0018] Beneficial effects of the present invention:

[0019] 1. In the present invention, a lower-layer circuit breaker pulling and fixing structure for a lifting service trolley is used. When the lifting service trolley is pushed toward the front of the circuit breaker cabinet, the inclined plate can cover both sides of the circuit breaker cabinet for limiting and guiding, until the limiting plate finally clamps both sides of the circuit breaker cabinet, thereby realizing lateral limitation between the lifting service trolley and the circuit breaker cabinet, so as to achieve precise docking.

[0020] 2. A lifting service trolley in the present invention uses a lower-layer circuit breaker pulling and fixing structure to hook the lower block by rotating the hook ring, and then push the locking rod so that one side of the locking rod is locked into the inside of the locking hole, thereby forming a good limit. Finally, through the limit of the hook ring and the limit plate, the tray can be stably connected to the circuit breaker cabinet when it is at the bottom, so that the circuit breaker under the circuit breaker cabinet can be stably pulled to the top of the tray, so that the lifting service trolley can take out the upper and lower circuit breakers.

[0021] 3. A pull-out fixing structure for a lower-layer circuit breaker for a lifting service trolley in the present invention is achieved by fitting a fixing plate so that the through hole is sleeved on the bolt of the side wall of the tray to achieve basic limiting. Then, the pull rod is pulled and the baffle is rotated to limit the fixing plate. After releasing the hand, the elastic action of the spring drives the pull rod to be stuck in the limiting hole for final limiting, thereby finally achieving rapid installation of the pull-out fixing structure and facilitating disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention when it is working.

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention when installed.

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the tray of the present invention when viewed from above.

[0026] Figure 4 It is a schematic diagram of the partial three-dimensional structure of the present invention when it is disassembled.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention.

[0028] Figure 6 For the present invention Figure 2 Schematic diagram of the enlarged structure of part A.

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the U-shaped hook of the present invention.

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the locking rod of the present invention.

[0031] In the figure: 1. Circuit breaker cabinet; 2. Lifting service trolley; 3. Tray; 4. Lower stop; 5. Fixed plate; 6. Locking rod; 7. Limit plate; 8. Baffle; 9. Inclined plate; 10. Support plate; 11. Hook; 12. Fixed block; 13. Through hole; 14. Limit hole; 15. Pull rod; 16. Spring cylinder; 17. Clamping hole; 18. Solid elastic pin. DETAILED DESCRIPTION

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] like Figures 1-8 In this embodiment, a lifting service trolley is used for pulling and fixing a lower circuit breaker, including a lifting service trolley 2. A tray 3 is slidably connected to the interior of the lifting service trolley 2. The tray 3 is lifted and lowered by a hydraulic cylinder. The bottom end of the tray 3 is symmetrically slidably connected to a locking rod 6. Fixed plates 5 are clamped on both sides of the tray 3. The side wall of the tray 3 above the fixed plate 5 is rotatably connected to a baffle 8. The top of the fixed plate 5 is fixedly connected to a support plate 10. The bottom end of the support plate 10 is rotatably connected to a hook ring 11. One side of the top of the hook ring 11 is fixedly connected to a limit plate 7. A circuit breaker cabinet 1 is provided on one side of the lifting service trolley 2, and the bottom end of the circuit breaker cabinet 1 is fixedly connected to a lower baffle 4.

[0034] like Figure 1-Figure 3 and Figure 8 The locking rod 6 in this embodiment is L-shaped, and a solid elastic pin 18 is fixedly connected to one side of the locking rod 6. By pushing the locking rod 6 through the hole and then rotating it to cooperate with the solid elastic pin 18 for limiting, the locking between the lifting service trolley 2 and the circuit breaker cabinet 1 is achieved.

[0035] like Figure 2 、 Figure 3 、 Figure 5 and Figure 7 The shape of the hook ring 11 in this embodiment is U-shaped, and a fixing block 12 is fixedly connected to one side of the hook ring 11, and the U-shaped setting is used to facilitate rotation and locking.

[0036] like Figure 5 and Figure 7 In this embodiment, a locking hole 17 is opened on the side of the fixing block 12 close to the locking rod 6. The diameter of the locking hole 17 is larger than the diameter of one side of the locking rod 6, so that one side of the locking rod 6 can be easily inserted into the inside of the locking hole 17, thereby locking the hook ring 11.

[0037] like Figure 2 、 Figure 3 、 Figure 5 and Figure 7 The maximum rotation angle of the hook ring 11 in this embodiment is one hundred and eighty degrees. When the hook ring 11 is vertically downward, the inner wall is aligned with the inner wall of the lower block 4, thereby facilitating rotation so that the hook ring 11 and the lower block 4 are locked.

[0038] like Figure 4 and Figure 5 In this embodiment, one side of the fixing plate 5 is evenly provided with through holes 13, and the size of the through holes 13 is consistent with the size of the bolts on both sides of the tray 3. Therefore, during installation, the fixing plate 5 is attached to both sides of the tray 3, so that the bolts are stuck in the through holes 13 to form a preliminary limit.

[0039] like Figures 1-6In this embodiment, the lower end of the baffle 8 is fixedly connected to a spring tube 16, and the inside of the spring tube 16 is slidably connected to a pull rod 15. A limiting hole 14 is correspondingly provided on the side wall of the fixed plate 5 on one side of the pull rod 15. By pulling the pull rod 15 and rotating the baffle 8, the baffle 8 is vertically limited to the fixed plate 5 downward, and then the pull rod 15 is driven to be inserted into the limiting hole 14 for the final limiting under the elastic action of the spring, thereby finally realizing the rapid installation of the pull-out fixing structure and facilitating disassembly.

[0040] like Figures 1-6 In this embodiment, the outer surface of the pull rod 15 is fixedly connected to one side of the spring inside the spring tube 16 to facilitate the reset of the pull rod 15.

[0041] like Figures 1-4 and Figure 6 In this embodiment, the distance between the inner wall of the baffle 8 and the side wall of the tray 3 is equal to the thickness of the fixed plate 5, and the bottom end of the baffle 8 is flush with the bottom end of the fixed plate 5 to ensure that the baffle 8 fully limits the fixed plate 5 to avoid loosening.

[0042] like Figure 1-Figure 3 and Figure 5 The limiting plate 7 in this embodiment is L-shaped, and an inclined plate 9 is fixedly connected to one side of the limiting plate 7. When the lifting service trolley 2 is pushed close to the front of the circuit breaker cabinet 1, the inclined plate 9 is used to cover both sides of the circuit breaker cabinet 1. During the continuous pushing process, the inclined plate 9 is used to limit and guide until the limiting plate 7 finally clamps both sides of the circuit breaker cabinet 1, thereby realizing the lateral limit between the lifting service trolley 2 and the circuit breaker cabinet 1, so as to facilitate precise docking.

[0043] It can be understood that the lifting service trolley uses a lower-level circuit breaker pull-out fixing structure, which can be easily installed and disassembled, so that when the lower circuit breaker needs to be removed, it can be quickly put into working state. At the same time, the entire lifting service trolley 2 can be moved and guided to form a lateral limit with the circuit breaker cabinet 1. When working, it can also be stably interlocked with the circuit breaker cabinet 1 by rotating the hook ring 11 in the structure, so that the lifting service trolley 2 can finally be stably installed to remove the circuit breakers above and below.

[0044] The complete use steps and working principle of the present invention are as follows:

[0045] When it is necessary to remove the circuit breakers in the middle and upper layers of the circuit breaker cabinet 1, this structure can be omitted and the lifting service trolley 2 can be directly pushed to the side of the circuit breaker cabinet 1 so that the hole on the circuit breaker cabinet 1 is aligned with the locking rod 6. The locking rod 6 is then pushed through the hole and rotated to engage the solid elastic pin 18 for limiting. This locks the lifting service trolley 2 and the circuit breaker cabinet 1, making it easier to stably pull the circuit breaker to the top of the tray 3.

[0046] When the circuit breaker at the bottom of the circuit breaker cabinet 1 is to be taken out, the fixing plate 5 can be fitted on the side wall of the tray 3 so that the through hole 13 is sleeved on the bolt on the side wall of the tray 3, thereby achieving basic positioning. Then, the pull rod 15 is pulled and the baffle 8 is rotated so that the baffle 8 vertically limits the fixing plate 5 downward. Then, the pull rod 15 is driven by the elastic action of the spring to snap into the inside of the limiting hole 14 for final positioning, thereby achieving rapid installation of the pull-out fixing structure and facilitating disassembly.

[0047] Then, push the lifting service trolley 2 close to the front of the circuit breaker cabinet 1. During this process, the inclined plates 9 are used to cover both sides of the circuit breaker cabinet 1. During the continuous pushing process, the inclined plates 9 are used to limit and guide the lifting service trolley 2 until the limiting plates 7 finally clamp both sides of the circuit breaker cabinet 1, thereby achieving lateral limitation between the lifting service trolley 2 and the circuit breaker cabinet 1 for accurate docking.

[0048] Finally, the hook ring 11 is rotated to hook the lower stop 4, and then the locking rod 6 is pushed so that one side of the locking rod 6 is locked into the inside of the locking hole 17, thereby forming a good limit. Finally, through the limit of the hook ring 11 and the limit plate 7, the tray 3 can be stably connected to the circuit breaker cabinet 1 when it is at the bottom, so that the circuit breaker under the circuit breaker cabinet 1 can be stably pulled to the top of the tray 3, so that the lifting service trolley 2 can take out the circuit breakers above and below.

[0049] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A lower layer circuit breaker pulling and fixing structure for a lifting service trolley, comprising a lifting service trolley (2), characterized in that: The interior of the lifting service trolley (2) is slidably connected to a pallet (3), the pallet (3) is lifted and lowered by a hydraulic cylinder, the bottom end of the pallet (3) is symmetrically slidably connected to a locking rod (6), both sides of the pallet (3) are clamped with fixed plates (5), the side wall of the pallet (3) above the fixed plate (5) is rotatably connected to a baffle (8), the top end of the fixed plate (5) is fixedly connected to a support plate (10), the bottom end of the support plate (10) is rotatably connected to a hook ring (11), one side of the top end of the hook ring (11) is fixedly connected to a limit plate (7), a circuit breaker cabinet (1) is provided on one side of the lifting service trolley (2), and the bottom end of the circuit breaker cabinet (1) is fixedly connected to a lower baffle (4); The lower end of the baffle (8) is fixedly connected to a spring cylinder (16), the interior of the spring cylinder (16) is slidably connected to a pull rod (15), and a limiting hole (14) is correspondingly provided on the side wall of the fixed plate (5) on one side of the pull rod (15); The maximum rotation angle of the hook ring (11) is one hundred and eighty degrees. When the hook ring (11) is vertically downward, the inner wall is aligned with the inner wall of the lower block (4), thereby facilitating rotation so that the hook ring (11) and the lower block (4) are locked. Rotate the baffle (8) so that the baffle (8) vertically limits the fixed plate (5) downward; The limiting plates (7) clamp both sides of the circuit breaker cabinet (1) to achieve lateral limiting between the lifting service trolley (2) and the circuit breaker cabinet (1).

2. The lower layer circuit breaker pulling and fixing structure for a lifting service trolley according to claim 1 is characterized in that: The locking rod (6) is L-shaped, and a solid elastic pin (18) is fixedly connected to one side of the locking rod (6).

3. The lower layer circuit breaker pulling and fixing structure for a lifting service trolley according to claim 1 is characterized in that: The hook ring (11) is U-shaped, and one side of the hook ring (11) is fixedly connected to a fixing block (12).

4. The lower layer circuit breaker pulling and fixing structure for a lifting service trolley according to claim 3 is characterized in that: A clamping hole (17) is provided on one side of the fixing block (12) close to the locking rod (6), and the diameter of the clamping hole (17) is larger than the diameter of one side of the locking rod (6).

5. The lower layer circuit breaker pulling and fixing structure for a lifting service trolley according to claim 1 is characterized in that: Through holes (13) are evenly formed on one side of the fixing plate (5), and the size of the through holes (13) is consistent with the size of the bolts on both sides of the tray (3).

6. The lower layer circuit breaker pulling and fixing structure for a lifting service trolley according to claim 1, characterized in that: The outer surface of the pull rod (15) is fixedly connected to one side of the spring inside the spring cylinder (16).

7. The lower layer circuit breaker pulling and fixing structure for a lifting service trolley according to claim 1, characterized in that: The distance between the inner wall of the baffle (8) and the side wall of the tray (3) is equal to the thickness of the fixed plate (5), and the bottom end of the baffle (8) is flush with the bottom end of the fixed plate (5).

8. The lower layer circuit breaker pulling and fixing structure for a lifting service trolley according to claim 1, characterized in that: The limiting plate (7) is L-shaped, and one side of the limiting plate (7) is fixedly connected to an inclined plate (9).

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