A mobile and fixed ring main unit

Abstract

The present invention relates to the technical field of ring network cabinets, and discloses a mobile and fixed ring network cabinet, comprising a cabinet, and a mobile unit is arranged under the cabinet; the mobile unit is used to control the movement and fixation of the cabinet; the mobile unit comprises a base, a universal wheel arranged on the base, a pressing assembly arranged on the base, a transmission assembly arranged on the base, and a lifting assembly arranged on the base; the pressing assembly is connected to the lifting assembly through the transmission assembly, the lifting assembly is used to lift the cabinet, and the pressing assembly controls the rise of the lifting assembly through the transmission assembly. The mobile and fixed ring network cabinet raises or lowers the height of the cabinet through the lifting assembly, when the support rod is lowered, the support foot contacts the ground, and the universal wheel is separated from the ground, and the cabinet is in a fixed state at this time; when the support rod is raised, the support foot is separated from the ground, and the universal wheel contacts the ground, and the cabinet is in a mobile state at this time; the cabinet switches between the mobile and fixed states, and is suitable for different usage scenarios.

Description

Technical Field

[0001] The invention relates to the technical field of ring main unit, and in particular to a mobile and fixed ring main unit. Background Art

[0002] Ring main unit is an important power distribution equipment used in power system, also known as ring main unit switch cabinet. Ring main unit can be used as a ring network node of power system, mainly used for power distribution, circuit breaker, branch and protection functions.

[0003] Ring main unit can be either fixed or mobile. The choice of fixed or mobile ring main unit depends on the specific application scenario and requirements.

[0004] Fixed ring main unit: Fixed ring main units are installed in permanent facilities such as power plants, substations, industrial and mining enterprises, large buildings, etc. They are usually used for the construction and operation of long-term power distribution systems and have stable power transmission functions. This type of ring main unit is fixed in one location, providing stable power supply and protection, and is suitable for long-term operation and stable power demand.

[0005] Mobile ring main unit: The mobile ring main unit is installed on a movable platform and can be quickly installed and disassembled. It is suitable for emergency power supply needs, such as emergencies, temporary construction sites, temporary activities, emergency repairs, etc. This type of ring main unit is portable and can be quickly deployed and moved to the site where power supply is needed to provide a temporary power solution.

[0006] The patent with the patent announcement number CN216699334U discloses a vacuum ring network cabinet that is easy to move, including a cabinet, a cabinet door is arranged on one side of the cabinet, a busbar chamber is arranged at the top of the cabinet, a switch chamber is arranged below the busbar chamber, and a plurality of fuses and a plurality of load switches are arranged in sequence inside the switch chamber; cabinet stabilization mechanisms are arranged at the bottom of both sides of the cabinet, a moving wheel is arranged at the bottom of the cabinet, a glass window frame is opened on the side wall of the cabinet door, and a glass window is arranged in the glass window frame; the cabinet stabilization mechanism includes a semi-cylinder, a rotating block 1, a three-quarter circular hole, a rotating block 2, a round sleeve, a slide, a support rod, a bolt, a spring and a support foot. The utility model has a novel structure, can be easily moved, and has high cabinet stability during use, reducing the possibility of the cabinet tipping over.

[0007] The prior art has the following defects:

[0008] 1. Lifting the support leg by tightening the bolts requires the operator to squat and use a wrench, which is inconvenient;

[0009] 2. The degree of descent of the support legs cannot be controlled. If the support legs are dropped too much, the pulley will leave the ground. Since the two sets of stabilizing mechanisms are symmetrically arranged, the cabinet body will be lifted by the two sets of support legs and will be in an extremely unstable state. If the support legs are dropped less, the support legs will not contact the ground and will not increase the friction.

[0010] The patent with patent announcement number CN219351056U discloses an integrated intelligent ring network cabinet, which relates to the technical field of ring network cabinets, including a base and a ring network cabinet body, wherein a connecting column is installed inside the base, a roller is installed at the bottom of the connecting column, an adjustment mechanism is installed at the inner top of the base, and both ends of the bottom of the adjustment mechanism are rotatably connected with connecting rods. Compared with the prior art, the utility model makes it convenient to move the entire device using rollers through connecting columns and rollers, and then uses the adjustment mechanism and connecting rods to adjust the movable plate, so that the movable plate drives the support foot downward, and it is convenient to use the support foot switching device to a fixed state, which can be flexibly switched as needed, and is very convenient to use. At the same time, a shock absorbing mechanism is used as a supporting component between the ring network cabinet body and the base, and the distance between the support plate and the base is adjusted by a locking nut to compress the hydraulic damper and the support spring, and the compressed hydraulic damper and support spring can effectively improve the stability of the ring network cabinet body.

[0011] The above patent has the following defects:

[0012] 1. Increased complexity: Adding motors and related drive mechanisms will increase the overall complexity of the system and may require more professional installation and maintenance. Using motors is no simpler than using mechanical transmissions, and there are also transmission parts to match. If you want to reduce the number of transmission parts, you have to use multiple motors to control multiple legs. The manufacturing cost is too high and it will not be adopted in actual use.

[0013] 2. Rising costs: The motor and control system add additional costs, not only the initial purchase cost, but also the maintenance and possible replacement costs.

[0014] 3. Power supply requirements: Motor-driven ring main units require a reliable power supply. In the event of a power outage or unstable power supply, the movement and fixing functions of the cabinet may be affected. At the same time, as a mobile and fixed dual-purpose ring main unit, it must be adapted to multiple scenarios, such as outdoor use. How does the motor run without an external power supply? Compared with motor transmission, mechanical transmission can better meet the use of multiple scenarios, greatly reducing the use restrictions of mobile and fixed dual-purpose ring main units.

[0015] 4. Reliability issues: Adding mechanical moving parts may reduce the overall reliability of the system, as the motor and transmission system may wear out due to long-term operation and require regular replacement or maintenance.

[0016] It can be seen that in the prior art, manual or motor solutions are generally used to lift the ring network cabinet, so that the ring network cabinet can be switched between mobile and fixed states. However, both motor lifting and manual lifting have corresponding disadvantages. Therefore, a mobile and fixed ring network cabinet that is more labor-saving, reliable, widely applicable, and has a good fixing effect is needed. Summary of the invention

[0017] In view of the shortcomings of the existing movable ring main unit in the prior art, a ring main unit that is both movable and fixed is proposed.

[0018] On the one hand, the present application provides a mobile and fixed dual-purpose ring main unit, the purpose of which is to provide a mobile and fixed dual-purpose ring main unit that is more labor-saving, reliable, has a wide range of applicable scenarios, has a good fixing effect, and is easy to switch between fixed and mobile states.

[0019] The technical solution of the present invention is: a mobile and fixed ring main unit, comprising a cabinet body, and a mobile unit is arranged under the cabinet body;

[0020] The moving unit is used to control the movement and fixation of the cabinet;

[0021] The mobile unit includes a base, a universal wheel arranged on the base, a pressing assembly arranged on the base, a transmission assembly arranged on the base, and a lifting assembly arranged on the base;

[0022] The pressing assembly is connected to the lifting assembly through the transmission assembly, the lifting assembly is used to lift the cabinet, and the pressing assembly controls the lifting of the lifting assembly through the transmission assembly;

[0023] The lifting assembly includes a support rod arranged on the base, a support foot arranged at the bottom end of the support rod, and a limit rod arranged on the support foot;

[0024] The support rod and the limiting rod are arranged through the base.

[0025] The transmission assembly includes an axle frame arranged on the base, a rotating shaft arranged on the axle frame, a worm segment arranged on the rotating shaft, a gear box arranged on the base, a worm wheel arranged in the gear box, a threaded hole arranged on the worm wheel, and a threaded segment arranged on the support rod;

[0026] The threaded section matches with the threaded hole, and the worm section matches with the worm wheel.

[0027] By adopting the above scheme, the height of the cabinet is raised or lowered through the lifting assembly. When the support rod is lowered, the support foot contacts the ground and the universal wheel is off the ground. At this time, the cabinet is in a fixed state; when the support rod is raised, the support foot is off the ground and the universal wheel contacts the ground. At this time, the cabinet is in a moving state.

[0028] Through the transmission assembly, the rotation of the rotating shaft can be converted into the rise and fall of the support rod, thereby switching the moving or fixed state of the cabinet.

[0029] Furthermore, the pressing assembly includes a lower pressing plate arranged on the rotating shaft, an elastic member 1 arranged between the lower pressing plate and the base, and a limiting element arranged between the lower pressing plate and the rotating shaft.

[0030] By adopting the above scheme, the pressing action of the lower pressure plate is converted into the rotation of the rotating shaft through the pressing assembly. The limiting element can only enable unidirectional transmission between the lower pressure plate and the rotating shaft. When the lower pressure plate is repeatedly stepped on, the rotating shaft will rotate in the same direction, thereby lifting or lowering the cabinet.

[0031] Furthermore, the lifting assembly is provided with a stabilizing assembly, and the stabilizing assembly is used to fix the supporting legs;

[0032] The stabilizing assembly comprises a sliding cavity provided on the supporting leg, a sliding rod provided in the sliding cavity, a fixing hole provided at the end of the sliding rod, a circular arc groove provided on the sliding rod, an elastic member 2 provided in the circular arc groove, a circular arc block provided on the supporting leg, a fixing ear provided on the supporting leg, a rope groove provided on the supporting leg, and a tensioning rope provided on the base;

[0033] The arc block slides relative to the arc groove, the two ends of the elastic member are respectively against the arc groove and the arc block, the tension rope passes through the fixing ear and the rope groove, and the two ends are respectively connected to the base and the left end of the arc groove.

[0034] By adopting the above scheme, through the stabilizing assembly, when the support rod descends, four sliding rods extend from the support leg to increase the stability of the support leg in contact with the ground. At the same time, the support leg can be connected to the ground through the fixing holes on the sliding rods.

[0035] Furthermore, the limiting element includes a sleeve disposed on the rotating shaft, a ratchet ring disposed on the sleeve, a limiting ring disposed in the lower pressure plate, and an elastic member disposed in the limiting ring;

[0036] The sleeve is connected to the rotating shaft via a keyway, and the sleeve slides axially on the rotating shaft. The limit ring, ratchet ring, and elastic member are arranged in two groups, and the two groups of ratchet rings and elastic members are in opposite directions. The distance between the two groups of ratchet rings can only allow one group of ratchet rings and the elastic member to mesh.

[0037] By adopting the above scheme, through the cooperation of two sets of ratchet rings and elastic members in opposite directions, when the lower pressure plate is repeatedly pressed, the rotating shaft is continuously rotated forward or reversed, thereby playing the role of lifting and lowering the cabinet.

[0038] Furthermore, a reversing element is provided on the limiting element, and the reversing element enables different ratchet rings to transmit to the lower pressure plate;

[0039] The reversing element comprises a reversing ring arranged on both end surfaces of the shaft sleeve, a cross bar arranged on the reversing ring, a convex bar arranged on the cross bar, a rotating rod arranged on the base, a through slot arranged on the rotating rod, and a paddle arranged on the rotating rod;

[0040] The convex rod passes through the through slot, and the rotating rod is rotatably arranged on the base through a hinge.

[0041] By adopting the above scheme, one of the two groups of ratchet rings can be controlled to transmit to the pressing block through the reversing element, thereby controlling the forward and reverse rotation of the rotating shaft.

[0042] Furthermore, an anti-slip strip is provided on the lower pressing plate.

[0043] By adopting the above solution, the anti-slip strip is provided, so that it is not easy to slip when stepping on the lower pressing plate.

[0044] Furthermore, the present invention also provides a method for using a mobile and fixed ring main unit, comprising the following steps:

[0045] S1: Move the cabinet to the work site via the universal wheels, and repeatedly step on the lower pressure plate on one side of the cabinet to move the support rod downward until the universal wheels are off the ground;

[0046] S2: Repeat the operation on the lower pressure plate on the other side of the cabinet to lift the entire cabinet;

[0047] S3: As the support pole descends, the tension rope is pulled and the sliding rod in the support leg is pulled out, increasing the stability of the support leg in contact with the ground;

[0048] S4: Fix the bolts to the ground through the fixing holes to fix the ring main unit to the ground.

[0049] Furthermore, in S4, when the ring network cabinet needs to be moved, first remove the bolts, then push the paddle to the right to make the other ratchet ring engage with the limit ring, repeatedly step on the lower pressure plate, and the sliding rod is retracted into the support foot while the support rod moves upward, so that the universal wheel contacts the ground again; repeat the operation of the lower pressure plate on the other side to make the four universal wheels contact the ground again.

[0050] Beneficial effects of the present invention:

[0051] 1. Use the lifting assembly to raise or lower the height of the cabinet. When the support rod is lowered, the support foot contacts the ground and the universal wheel is off the ground. At this time, the cabinet is in a fixed state; when the support rod is raised, the support foot is off the ground and the universal wheel is in contact with the ground. At this time, the cabinet is in a mobile state. The cabinet switches between mobile and fixed states, which is suitable for different usage scenarios.

[0052] 2. The pressing action of the lower pressure plate is converted into the rotation of the rotating shaft through the pressing assembly. The limiting element can only enable unidirectional transmission between the lower pressure plate and the rotating shaft. When the lower pressure plate is repeatedly stepped on, the rotating shaft will rotate in the same direction, thereby lifting or lowering the cabinet, making the lifting operation of the cabinet convenient and labor-saving.

[0053] 3. Through the cooperation of two sets of ratchet rings and elastic parts in opposite directions, when the lower pressure plate is repeatedly pressed, the rotating shaft can continue to rotate forward or reverse, thereby lifting and lowering the cabinet; through the reversing element, one of the two sets of ratchet rings can be controlled to transmit to the pressing block, thereby controlling the forward and reverse rotation of the rotating shaft, making it convenient for the cabinet to transform between a fixed state and a mobile state. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is an overall schematic diagram of the first embodiment of the present invention;

[0055] Figure 2 It is an overall schematic diagram of a mobile unit according to the first embodiment of the present invention;

[0056] Figure 3 Other viewing angles of the mobile unit of the first embodiment of the present invention;

[0057] Figure 4 It is a schematic diagram of the structure of a mobile unit according to the first embodiment of the present invention;

[0058] Figure 5 This is a schematic diagram of a transmission assembly according to an embodiment of the present invention;

[0059] Figure 6 It is a right side view of a transmission assembly according to a first embodiment of the present invention;

[0060] Figure 7 For the present invention Figure 6 Sectional view at AA;

[0061] Figure 8 This is an overall schematic diagram of a stabilizing assembly in Embodiment 1 of the present invention;

[0062] Fig. 9 An example diagram of the internal structure of a stabilizing component for implementing the present invention;

[0063] Fig.10 This is a schematic diagram of a sliding rod according to a first embodiment of the present invention;

[0064] Fig.11 This is a schematic diagram of a pressing component according to a first embodiment of the present invention;

[0065] Fig.12 This is a schematic diagram of a pressing component according to a second embodiment of the present invention;

[0066] Fig.13This is a schematic diagram of the pressing assembly from another perspective of the second embodiment of the present invention;

[0067] Fig.14 This is a schematic diagram of a switching element according to a second embodiment of the present invention;

[0068] Fig.15 This is a schematic diagram of a limiting element in Embodiment 2 of the present invention;

[0069] Fig.16 This is an exploded view of a limiting element according to a second embodiment of the present invention;

[0070] Fig.17 It is a three-dimensional cross-sectional view of a limiting ring according to a second embodiment of the present invention.

[0071] In the figure:

[0072] 1. Cabinet; 2. Base; 3. Universal wheel; 4. Pressing assembly; 5. Transmission assembly; 6. Lifting assembly; 7. Support rod; 8. Support foot; 9. Limiting rod; 10. Shaft frame; 11. Rotating shaft; 12. Worm segment; 13. Gear box; 14. Worm wheel; 15. Threaded hole; 16. Threaded segment; 17. Lower pressure plate; 18. Elastic member 1; 19. Limiting element; 20. Stabilizing assembly; 21. Sliding cavity ; 22. Sliding rod; 23. Fixing hole; 24. Arc groove; 25. Elastic part 2; 26. Arc block; 27. Fixing ear; 28. Rope groove; 29. ​​Tension rope; 30. Bushing; 31. Ratchet ring; 32. Limiting ring; 33. Elastic part 3; 34. Reversing element; 35. Reversing ring; 36. Cross bar; 37. Protruding rod; 38. Rotating rod; 39. Through groove; 40. Paddle; 41. Anti-slip strip. DETAILED DESCRIPTION

[0073] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0074] Example 1, reference Figure 1-11 , which is the first embodiment of the present invention, provides a mobile and fixed dual-purpose ring main unit, comprising a cabinet body 1, and a mobile unit is arranged below the cabinet body 1;

[0075] The moving unit is used to control the movement and fixation of the cabinet 1;

[0076] Reference Figure 1-3 The mobile unit includes a base 2, a universal wheel 3 arranged on the base 2, a pressing component 4 arranged on the base 2, a transmission component 5 arranged on the base 2, and a lifting component 6 arranged on the base 2;

[0077] The pressing component 4 is connected to the lifting component 6 through the transmission component 5. The lifting component 6 is used to lift the cabinet 1. The pressing component 4 controls the lifting component 6 to rise through the transmission component 5.

[0078] The lifting assembly 6 includes a support rod 7 disposed on the base 2, a support leg 8 disposed at the bottom end of the support rod 7, and a limit rod 9 disposed on the support leg 8;

[0079] The support rod 7 and the limiting rod 9 are arranged through the base 2 .

[0080] Specifically, the base 2 is fixedly connected to the bottom of the cabinet 1 by bolts, and the universal wheels 3 are arranged in 4 groups, which are respectively arranged at the four corners of the base 2; the support rod 7 is vertically penetrated and arranged on the base 2, and the bottom of the support rod 7 is fixedly connected to the support leg 8, and the support leg 8 is truncated cone-shaped, and the limit rod 9 is arranged in two groups, which are fixedly connected to the support leg 8. Through the limit rod 9, the support leg 8 can only move in the vertical direction.

[0081] The lifting components 6 are arranged in four groups, corresponding to the positions of the four groups of universal wheels 3 .

[0082] The height of the cabinet 1 is raised or lowered by the lifting assembly 6. When the support rod 7 is lowered, the support leg 8 contacts the ground, and the universal wheel 3 is off the ground. At this time, the cabinet 1 is in a fixed state; when the support rod 7 is raised, the support leg 8 is off the ground, and the universal wheel 3 contacts the ground. At this time, the cabinet 1 is in a moving state.

[0083] Reference Figure 4-7 The transmission assembly 5 includes a shaft frame 10 disposed on the base 2, a rotating shaft 11 disposed on the shaft frame 10, a worm segment 12 disposed on the rotating shaft 11, a gear box 13 disposed on the base 2, a worm wheel 14 disposed in the gear box 13, a threaded hole 15 disposed on the worm wheel 14, and a threaded segment 16 disposed on the support rod 7;

[0084] The threaded section 16 cooperates with the threaded hole 15 , and the worm section 12 cooperates with the worm wheel 14 .

[0085] Specifically, the shaft frame 10 is arranged at both ends of the rotating shaft 11 and is fixedly connected to the base 2. The rotating shaft 11 is rotatably arranged on the shaft frame 10. The gear box 13 is fixedly connected to the base 2. The support rod 7 passes through the gear box 13. The worm wheel 14 is rotatably arranged in the gear box 13. An opening is opened on the gear box 13 so that one quarter of the worm wheel 14 is outside the gear box 13; the rotation of the rotating shaft 11 drives the worm wheel 14 to rotate, and the rotation of the worm wheel 14 in the gear box 13 drives the support rod 7 to move vertically.

[0086] Through the transmission assembly 5 , the rotation of the rotating shaft 11 can be converted into the rise and fall of the support rod 7 , thereby switching the moving or fixed state of the cabinet 1 .

[0087] Reference Fig.11The pressing assembly 4 includes a lower pressing plate 17 disposed on the rotating shaft 11 , an elastic member 18 disposed between the lower pressing plate 17 and the base 2 , and a limiting element 19 disposed between the lower pressing plate 17 and the rotating shaft 11 .

[0088] Specifically, the limiting element 19 is a one-way rotating bearing, a through hole is provided on the lower pressure plate 17, the one-way rotating bearing is arranged in the through hole and is sleeved on the rotating shaft 11, and the elastic member 18 can be a tension spring, which is connected to the lower pressure plate 17 and the base 2 through a connecting ear; when the lower pressure plate 17 is stepped on, the lower pressure plate 17 drives the rotating shaft 11 to rotate, and when the lower pressure plate 17 is released, the lower pressure plate 17 is lifted up under the action of the tension spring, and no transmission occurs between the lower pressure plate 17 and the rotating shaft 11 during the lifting process.

[0089] The pressing action of the lower pressing plate 17 is converted into the rotation of the rotating shaft 11 through the pressing component 4. The limiting element 19 can only enable unidirectional transmission between the lower pressing plate 17 and the rotating shaft 11. When the lower pressing plate 17 is repeatedly stepped on, the rotating shaft 11 will rotate in the same direction to lift or lower the cabinet 1.

[0090] Reference Figure 8-10 , a stabilizing component 20 is provided on the lifting component 6, and the stabilizing component 20 is used to fix the supporting foot 8;

[0091] The stabilizing assembly 20 includes a sliding cavity 21 disposed on the supporting leg 8, a sliding rod 22 disposed in the sliding cavity 21, a fixing hole 23 disposed at the end of the sliding rod 22, a circular arc groove 24 disposed on the sliding rod 22, an elastic member 25 disposed in the circular arc groove 24, an arc block 26 disposed on the supporting leg 8, a fixing ear 27 disposed on the supporting leg 8, a rope groove 28 disposed on the supporting leg 8, and a tension rope 29 disposed on the base 2;

[0092] The arc block 26 slides relative to the arc groove 24, and the two ends of the elastic member 25 respectively abut against the arc groove 24 and the arc block 26. The tension rope 29 passes through the fixing ear 27 and the rope groove 28, and the two ends are respectively connected to the base 2 and the left end of the arc groove 24.

[0093] Specifically, the sliding rod 22 slides in the sliding cavity 21, and four sliding rods 22 are arranged on each support foot 8. The arc block 26 is arranged at a position close to the right end of the arc groove 24. When the sliding rod 22 is extended, the arc groove 24 and the arc block 26 will squeeze the elastic member 25. The elastic member 25 can be an arc spring, which is embedded in the arc groove 24; the fixed ear 27 is arranged at a position close to the support rod 7. By passing the tension rope 29 through the fixed ear 27, the tension rope 29 can be close to the support rod 7. When the support rod 7 moves downward, the length of the tension rope 29 in the sliding cavity 21 becomes shorter, and the sliding rod 22 is pulled out of the sliding cavity 21.

[0094] Through the stabilizing assembly 20 , when the support rod 7 descends, four sliding rods 22 extend from the support leg 8 to increase the stability of the support leg 8 in contact with the ground. At the same time, the support leg 8 can be connected to the ground through the fixing holes 23 on the sliding rods 22 .

[0095] During use, in the initial state, the support rod 7 is separated from the ground, and the cabinet body 1 can be moved at will under the action of the universal wheel 3. When it moves to a suitable position, the lower pressure plate 17 on one side of the cabinet body 1 is repeatedly stepped on, and the lower pressure plate 17 drives the rotating shaft 11 to rotate unidirectionally. The rotation of the rotating shaft 11 drives the worm gear 14 to rotate, and the worm gear 14 rotates in the gear box 13 to drive the support rod 7 to move downward. When the support rod 7 moves downward, the length of the tensioning rope 29 in the sliding cavity 21 becomes shorter, and the sliding rod 22 is pulled out of the sliding cavity 21.

[0096] Example 2, reference Figure 1-17 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the limiting element 19 includes a sleeve 30 arranged on the rotating shaft 11, a ratchet ring 31 arranged on the sleeve 30, a limiting ring 32 arranged in the lower pressing plate 17, and an elastic member 33 arranged in the limiting ring 32;

[0097] Reference Figure 15-17 The sleeve 30 is connected to the rotating shaft 11 through a keyway, and the sleeve 30 slides axially on the rotating shaft 11. The limit ring 32, the ratchet ring 31, and the elastic member 33 are arranged in two groups. The two groups of ratchet rings 31 and the elastic member 33 are in opposite directions, and the distance between the two groups of ratchet rings 31 can only allow one group of ratchet rings 31 and the elastic member 33 to mesh.

[0098] Through the cooperation of two sets of ratchet rings 31 and elastic members 33 in opposite directions, when the lower pressing plate 17 is repeatedly pressed, the rotating shaft 11 is continuously rotated forward or reversed, thereby lifting and lowering the cabinet 1.

[0099] Specifically, two groups of ratchet rings 31 are sleeved on both ends of the shaft sleeve 30 and fixedly connected to the shaft sleeve 30, and two groups of limit rings 32 are embedded in the holes in the lower pressure plate 17, located at both ends of the holes, and the elastic member three 33 can be a spring sheet; when the ratchet ring 31 on the right side coincides with the limit ring 32, the ratchet ring 31 on the left side is outside the hole of the lower pressure plate 17, and the rotating shaft 11 rotates when the lower pressure plate 17 is pressed down, and the rotating shaft 11 does not rotate when lifted; similarly, when the ratchet ring 31 on the left side coincides with the limit ring 32, the ratchet ring 31 on the right side is located outside the lower pressure plate 17, and the rotating shaft 11 does not rotate when the lower pressure plate 17 is pressed down, and the rotating shaft 11 rotates in the opposite direction when the lower pressure plate 17 is pulled up by the tension spring, that is, when the left and right ratchet rings 31 are located in the lower pressure plate 17, one downward pressure is completed, and the rotating shaft 11 will rotate in two opposite directions.

[0100] Reference Figure 12-14, a reversing element 34 is provided on the limiting element 19, and the reversing element 34 enables different ratchet rings 31 to transmit to the lower pressing plate 17;

[0101] The reversing element 34 includes a reversing ring 35 disposed on both end surfaces of the sleeve 30, a cross bar 36 disposed on the reversing ring 35,

[0102] A protruding rod 37 disposed on the crossbar 36, a rotating rod 38 disposed on the base 2, a through slot 39 disposed on the rotating rod 38, and a paddle 40 disposed on the rotating rod 38;

[0103] The protruding rod 37 passes through the through slot 39 , and the rotating rod 38 is rotatably disposed on the base 2 via a hinge.

[0104] Specifically, the reversing ring 35 is provided in two groups, which are respectively abutted against the two ends of the sleeve 30, and the cross bar 36 is fixedly connected to the two groups of reversing rings 35. A protruding rod 37 is fixed on the cross bar 36, and the protruding rod 37 slides in the through groove 39. By moving the paddle 40 left and right, the reversing ring 35 squeezes the sleeve 30 so that different ratchet rings 31 are embedded in the limit ring 32, thereby changing the rotation direction of the rotating shaft 11.

[0105] Through the reversing element 34 , one of the two groups of ratchet rings 31 can be controlled to transmit to the pressing block, thereby controlling the forward and reverse rotation of the rotating shaft 11 .

[0106] Reference Fig.15 An anti-slip strip 41 is provided on the upper side of the lower pressing plate 17. By providing the anti-slip strip 41, it is not easy to slip when stepping on the lower pressing plate 17.

[0107] During use, when it is necessary to fix the cabinet 1, the paddle 40 is pushed to the left so that the reversing ring 35 on the left squeezes the sleeve 30, and the ratchet ring 31 on the left is nested in the limiting ring 32, and the lower pressure plate 17 is pressed down to lower the support rod 7, the universal wheel 3 is separated from the ground, and the position of the cabinet 1 is fixed; when it is necessary to move the cabinet 1, the paddle 40 is pushed to the right so that the reversing ring 35 on the right squeezes the sleeve 30, and the ratchet ring 31 on the right is nested in the limiting ring 32, and the lower pressure plate 17 is pressed down to raise the support rod 7, the universal wheel 3 contacts the ground, and the cabinet 1 can be moved.

[0108] The remaining structures are the same as those of Example 1.

[0109] Example 3, reference Figure 1-17 , which is the third embodiment of the present invention, provides: a method for using a mobile and fixed ring main unit, comprising the following steps:

[0110] S1: Move the cabinet 1 to the work site via the universal wheel 3, and repeatedly step on the lower pressure plate 17 on one side of the cabinet 1 with your feet to move the support rod 7 downward until the universal wheel 3 is off the ground;

[0111] S2: Repeatedly step on the lower pressing plate 17 on one side of the cabinet 1, the lower pressing plate 17 drives the rotating shaft 11 to rotate in one direction, the rotating shaft 11 rotates to drive the worm gear 14 to rotate, the worm gear 14 rotates in the gear box 13 to drive the support rod 7 to move downward, so that the cabinet 1 is lifted;

[0112] S3: When the support rod 7 is lowered, the tension rope 29 is pulled, and the sliding rod 22 in the support leg 8 is pulled out, thereby increasing the stability of the support leg 8 in contact with the ground;

[0113] S4: Fix the bolts to the ground through the fixing holes 23 to fix the ring main unit to the ground;

[0114] S5: When the ring main unit needs to be moved, first remove the bolts, then push the paddle 40 to the right to engage the other ratchet ring 31 with the limit ring 32, and repeatedly step on the lower pressure plate 17. While the support rod 7 moves upward, the sliding rod 22 is retracted into the support leg 8, and the universal wheel 3 contacts the ground again; repeat the operation of the lower pressure plate 17 on the other side to make the four universal wheels 3 contact the ground again.

Claims

1. A mobile and fixed ring main unit, comprising a cabinet body (1), characterized in that: A moving unit is arranged below the cabinet (1); The moving unit is used to control the movement and fixation of the cabinet (1); The mobile unit comprises a base (2), a universal wheel (3) arranged on the base (2), a pressing assembly (4) arranged on the base (2), a transmission assembly (5) arranged on the base (2), and a lifting assembly (6) arranged on the base (2); The pressing component (4) is connected to the lifting component (6) through a transmission component (5); the lifting component (6) is used to lift the cabinet (1); and the pressing component (4) controls the lifting of the lifting component (6) through the transmission component (5); The lifting assembly (6) comprises a support rod (7) arranged on a base, a support foot (8) arranged at the bottom end of the support rod (7), and a limit rod (9) arranged on the support foot (8); The support rod (7) and the limiting rod (9) are arranged to penetrate the base (2); The transmission assembly (5) comprises a shaft frame (10) arranged on the base (2), a rotating shaft (11) arranged on the shaft frame (10), a worm segment (12) arranged on the rotating shaft (11), a gear box (13) arranged on the base (2), a worm wheel (14) arranged in the gear box (13), a threaded hole (15) arranged on the worm wheel (14), and a threaded segment (16) arranged on the support rod (7); The threaded section (16) matches with the threaded hole (15), and the worm section (12) matches with the worm wheel (14); The pressing assembly (4) comprises a lower pressing plate (17) arranged on the rotating shaft (11), an elastic member (18) arranged between the lower pressing plate (17) and the base (2), and a limiting element (19) arranged between the lower pressing plate (17) and the rotating shaft (11); The lifting assembly (6) is provided with a stabilizing assembly (20), and the stabilizing assembly (20) is used to fix the supporting foot (8); The stabilizing assembly (20) comprises a sliding cavity (21) arranged on the support leg (8), a sliding rod (22) arranged in the sliding cavity (21), a fixing hole (23) arranged at the end of the sliding rod (22), a circular arc groove (24) arranged on the sliding rod (22), a second elastic member (25) arranged in the circular arc groove (24), a circular arc block (26) arranged on the support leg (8), a fixing ear (27) arranged on the support leg (8), a rope groove (28) arranged on the support leg (8), and a tension rope (29) arranged on the base (2); The arc block (26) slides relative to the arc groove (24), the two ends of the second elastic member (25) respectively abut against the arc groove (24) and the arc block (26), the tension rope (29) passes through the fixing ear (27) and the rope groove (28), and the two ends are respectively connected to the base (2) and the left end of the arc groove (24); The limiting element (19) comprises a shaft sleeve (30) arranged on the rotating shaft (11), a ratchet ring (31) arranged on the shaft sleeve (30), a limiting ring (32) arranged in the lower pressure plate (17), and a third elastic member (33) arranged in the limiting ring (32); The shaft sleeve (30) is connected to the rotating shaft (11) via a keyway, and the shaft sleeve (30) slides axially on the rotating shaft (11). The limiting ring (32), the ratchet ring (31), and the elastic member 3 (33) are arranged in two groups, and the two groups of ratchet rings (31) and the elastic member 3 (33) are in opposite directions. The distance between the two groups of ratchet rings (31) is such that only one group of ratchet rings (31) and the elastic member 3 (33) can be meshed.

2. The mobile and fixed dual-purpose ring main unit according to claim 1 is characterized in that: The limiting element (19) is provided with a reversing element (34), and the reversing element (34) enables different ratchet rings (31) to transmit to the lower pressing plate (17); The reversing element (34) comprises a reversing ring (35) arranged on both end surfaces of the shaft sleeve (30), a cross bar (36) arranged on the reversing ring (35), a protruding bar (37) arranged on the cross bar (36), a rotating rod (38) arranged on the base (2), a through slot (39) arranged on the rotating rod (38), and a paddle (40) arranged on the rotating rod (38); The protruding rod (37) passes through the through slot (39), and the rotating rod (38) is rotatably disposed on the base (2) via a hinge.

3. The mobile and fixed dual-purpose ring main unit according to claim 2 is characterized in that: An anti-slip strip (41) is provided on the lower pressing plate (17).

4. A method for using a mobile and fixed dual-purpose ring main unit, using the mobile and fixed dual-purpose ring main unit as claimed in claim 3, characterized in that: The following steps are involved: S1: Move the cabinet (1) to the work site via the universal wheels (3), and repeatedly step on the lower pressure plate (17) on one side of the cabinet (1) with the foot to move the support rod (7) downward until the universal wheels (3) are off the ground; S2: Repeat the operation of the lower pressing plate (17) on the other side of the cabinet (1) to lift the entire cabinet (1); S3: As the support rod (7) descends, the tension rope (29) is pulled, and the sliding rod (22) in the support leg (8) is pulled out, thereby increasing the stability of the support leg (8) in contact with the ground; S4: Fix the bolts to the ground through the fixing holes (23) to secure the ring main unit to the ground.

5. The method for using the mobile and fixed ring main unit according to claim 4 is characterized in that: In S4, when the ring network cabinet needs to be moved, the bolts are first removed, and then the paddle (40) is pushed to the right so that the other ratchet ring is engaged with the limit ring (32), and the lower pressure plate (17) is repeatedly stepped on, and the support rod (7) moves upward while the sliding rod (22) is retracted into the support foot (8), so that the universal wheel (3) contacts the ground again; the operation of the lower pressure plate (17) on the other side is repeated to make the four universal wheels (3) contact the ground again.

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