Limiting and buffering device for heavy box door of box-type substation

Abstract

The utility model belongs to power equipment, and provides a box-type substation heavy box door limiting and buffering device which comprises a first mounting plate fixedly mounted on a door frame. The second mounting plate is fixedly mounted on the box body door; one end of the limiting rod is horizontally and rotatably connected with the second mounting plate, the bottom of the first mounting plate is connected with a limiting ring, and the other end of the limiting rod slidably penetrates through the limiting ring; the two lantern rings are detachably connected to the limiting rod in a sleeving mode, and the two lantern rings are located on the two sides of the limiting ring correspondingly; and springs are respectively sleeved on the limiting rods between the two lantern rings and the limiting ring. According to the limiting and buffering device for the heavy box door of the box-type substation, buffering and limiting in the opening and closing process of the box door are achieved through the springs on the two sides of the limiting ring, and compared with a traditional hydraulic limiting stopper, the limiting and buffering device can bear larger thrust and tension and is longer in service life.

Description

Technical Field

[0001] The utility model belongs to the power equipment, and particularly relates to a limit buffer device for a heavy box door of a box-type substation. Background Technique

[0002] A box-type substation is a compact complete power distribution device that combines high-voltage switchgear, distribution transformers, low-voltage switchgear, electric energy metering equipment, reactive power compensation devices, etc. according to a certain wiring scheme in one or several boxes. The outer shell generally uses aluminized zinc steel plates, the frame uses standard container materials and manufacturing processes, has good anti-corrosion performance, the inner cladding plate uses aluminum alloy buckles, and the interlayer uses fireproof and heat-insulating materials.

[0003] In order to ensure the fireproof performance, the box door of the box-type substation uses a reinforced concrete door, which is relatively heavy and has a large kinetic energy when opening and closing. Conventional hydraulic limiters cannot withstand the thrust when the box door closes and the pulling force when opening to the maximum extent, and will be damaged after the box door is opened or closed several times and thus lose the limit function. Therefore, a more durable limit buffer device for the box door is needed. Content of the Utility Model

[0004] The utility model provides a limit buffer device for a heavy box door of a box-type substation, aiming to solve the above technical problems.

[0005] The utility model is realized as follows. A limit buffer device for a heavy box door of a box-type substation includes: a first mounting plate fixedly mounted on the door frame; a second mounting plate fixedly mounted on the box door; a limit rod, one end of the limit rod is horizontally rotatably connected to the second mounting plate, a limit ring is connected to the bottom of the first mounting plate, and the other end of the limit rod slidably passes through the limit ring; a sleeve ring, two sleeve rings are detachably sleeved on the limit rod, and the two sleeve rings are respectively located on both sides of the limit ring; springs are respectively sleeved on the limit rod between the two sleeve rings and the limit ring.

[0006] Further, a plurality of through holes arranged at equal intervals are formed in the limit rod along the length direction, a pin is inserted into the through hole, and the sleeve ring is slidably sleeved on the limit rod and limited by the pin.

[0007] Furthermore, the spring between the sleeve ring close to the rotation connection of the limit rod and the second mounting plate and the limit ring is a double-stage spring.

[0008] Furthermore, the distance between the sleeve ring close to the rotation connection of the limit rod and the second mounting plate and the limit ring is greater than the distance between the other sleeve ring and the limit ring, and the length of the double-stage spring is greater than the length of the other spring.

[0009] Further, a "7"-shaped connecting portion extends from the second mounting plate towards the limiting rod. A double-layer connecting plate is connected to the end of the limiting rod. The double-layer connecting plate clamps the connecting portion and is horizontally rotatably connected to the connecting portion.

[0010] Further, a reinforcing rib is connected between the limiting ring and the first mounting plate.

[0011] Further, a plurality of gaskets are sleeved on the limiting rod between the collar and the spring.

[0012] The box-type substation heavy box body door limiting and buffering device provided by the present utility model utilizes the springs on both sides of the limiting ring to achieve buffering and limiting during the opening and closing processes of the box body door. Compared with traditional hydraulic limiters, it can withstand greater thrust and tensile forces and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the box-type substation heavy box body door limiting and buffering device provided by an embodiment of the present utility model;

[0014] Figure 2 is Figure 1 a schematic structural diagram of the back side;

[0015] Figure 3 is a schematic diagram of the positions of the limiting ring and the gaskets;

[0016] Figure 4 is a schematic structural diagram of the connecting portion and the double-layer connecting plate;

[0017] Figure 5 is a top view of the box-type substation heavy box body door limiting and buffering device provided by an embodiment of the present utility model in a use state.

[0018] The reference numerals in the figures respectively denote: 01 - door frame, 02 - box body door, 1 - first mounting plate, 2 - second mounting plate, 3 - limiting rod, 4 - limiting ring, 5 - first collar, 6 - second collar, 7 - first spring, 8 - second spring, 9 - through hole, 10 - bolt, 11 - connecting portion, 12 - double-layer connecting plate, 13 - reinforcing rib, 14 - gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] See Figures 1 to 5, an embodiment of the present utility model provides a limiting and buffering device for a heavy box door of a box-type substation. The device includes a first mounting plate 1 fixedly installed on the door frame 01, a second mounting plate 2 fixedly installed on the box door 02, a limiting rod 3, a limiting ring 4, a collar, and springs respectively sleeved on the limiting rod 3 between the two collars and the limiting ring 4.

[0021] The first mounting plate 1 is fixedly installed on the inner side of the cross beam of the door frame 01 by bolts, and the second mounting plate 2 is fixedly installed on the top of the inner side of the door panel of the box door 02 by bolts.

[0022] One end of the limiting rod 3 is horizontally rotatably connected to the second mounting plate 2, the bottom of the first mounting plate 1 is connected to the limiting ring 4, and the other end of the limiting rod 3 slides through the limiting ring 4.

[0023] The installation positions of the first mounting plate 1 and the second mounting plate 2 are based on the horizontal state of the limiting rod 3. The diameter of the hole of the limiting ring 4 is larger than the diameter of the limiting rod 3, so that the limiting rod 3 can swing within a certain angle in the horizontal direction while passing through the limiting ring 4.

[0024] In order to improve the structural stability of the limiting ring 4, a reinforcing rib 13 is connected between the limiting ring 4 and the first mounting plate 1.

[0025] The two collars are detachably sleeved on the limiting rod 3, and the two collars are respectively located on both sides of the limiting ring 4.

[0026] Two springs and two collars are sleeved on the limiting rod 3, as Figure 1 , 4 shown. The one closer to the second mounting plate 2 is the first spring 7 and the first collar 5, as Figure 1 , 3 shown. The one closer to the second mounting plate 1 is the second spring 8 and the second collar 6. The first spring 7 is sleeved between the first collar 5 and the limiting ring 4, and the second spring 8 is sleeved between the second collar 6 and the limiting ring 4.

[0027] During the opening and closing process of the box door 02, the limiting rod 3 will be pulled through the second mounting plate 2. While the limiting rod 3 moves, the distances between the first collar 5 and the limiting ring 4, and between the second collar 6 and the limiting ring 4 will change, so that the first spring 7 and the second spring 8 are compressed, thereby realizing the limiting and buffering of the box door 02.

[0028] The collar can be fixedly welded on the limiting rod 3, or it can be a sliding sleeve on the limiting rod 3 to match springs of different lengths. In the embodiment of the present utility model, a plurality of equally spaced through holes 9 are arranged along the length direction of the limiting rod 3, and pins 10 are inserted into the through holes 9. The collar is slidably sleeved on the limiting rod 3 and is limited by the pins 10. A plurality of gaskets 14 are sleeved on the limiting rod 3 between the collar and the spring.

[0029] On both sides of a single collar, the spring is limited by a pin 10 inserted into the through hole 9 and a spring respectively, so as to fix the position of the spring. Changing the position of the collar can not only adapt to springs of different lengths, but also adjust the compression degree of the spring, thereby adjusting the magnitude of the buffering resistance when the cabinet door 02 is opened and closed.

[0030] During adjustment, rough adjustment can be carried out by inserting the pin 10 into different through holes 9, and then fine adjustment can be carried out by adding gaskets 14.

[0031] In order to improve the durability of the spring, in the embodiment of the present utility model, the spring between the collar close to the rotation connection of the limiting rod 3 and the second mounting plate 2 and the limiting ring 4, that is, the first spring 7, adopts a double-section spring with better load-bearing capacity. The distance between the collar close to the rotation connection of the limiting rod 3 and the second mounting plate 2 and the limiting ring 4 is greater than the distance between another collar and the limiting ring 4, and the length of the double-section spring is greater than the length of another spring.

[0032] In order to enable the first spring 7 and the second spring 8 to achieve two state changes of compression and balance during the opening process of the cabinet door 02, a "7"-shaped connecting portion 11 extends from the second mounting plate 2 towards the limiting rod 3, and a double-layer connecting plate 12 is connected to the end of the limiting rod 3. The double-layer connecting plate 12 clamps the connecting portion 11 and is horizontally rotatably connected to the connecting portion 11.

[0033] Both ends of the first spring 7 and the second spring 8 are not fixed, and are only limited by the first collar 5 and the second collar 6. The first spring 7 and the second spring 8 are set as follows: when the cabinet door 02 is closed, the first spring 7 and the second spring 8 are both in a non-compressed state; during the opening process of the cabinet door 02, as the limiting rod 3 is pulled, the first spring 7 is first compressed by the first collar 5 and the limiting ring 4, giving a resistance to opening the cabinet door 02, and this resistance can prevent the cabinet door 02 from opening by itself, and the second spring 8 is not compressed; during the continuous opening process of the cabinet door 02, the compressed first spring 7 gradually returns to the balanced state, and the second spring 8 is not compressed until the cabinet door 02 is opened to a conventional fully opened angle, such as 90 degrees; when the cabinet door 02 continues to open beyond the conventional fully opened angle, the second spring 8 is compressed by the limiting ring 4 and the second collar 6 to buffer the pulling force generated by the opening of the cabinet door 02, and the first spring 7 is not compressed. When closing the cabinet door 02 from beyond the conventional fully opened angle, the second spring 8 gradually returns from the compressed state to the balanced state, and the first spring 7 transitions from the non-compressed state to the compressed state to buffer the inertia when the cabinet door 02 is closed. When the cabinet door 02 is fully closed, the first spring 7 returns to the balanced state again, thereby realizing the limiting buffering in the whole process of opening and closing the cabinet door 02.

[0034] The double-layer connecting plate 12 is rotatably connected to the connecting part 11 through a rotatable bolt, ensuring good tensile performance and service life between the two.

[0035] When the box-type substation heavy box door limit buffering device provided by the embodiment of the present utility model is in use, the first mounting plate 1 is mounted on the inner side of the cross beam of the door frame, the second mounting plate 2 is mounted on the top inner side of the box door 02, the second mounting plate 2 is connected to the limit rod 3, the first collar 5 is sleeved on the limit rod 3 and limited by inserting the bolt 10 through the through hole 9, the first spring 7 is sleeved, the limit rod 3 is passed through the limit ring 4, the second spring 8 is sleeved, the second collar 6 is sleeved on the limit rod 3 and limited by inserting the bolt 10 through the through hole 9, and by changing the through hole 9 into which the bolt 10 is inserted and adding gaskets 14, the compression degrees of the first spring 7 and the second spring 8 are adjusted, so that the first spring 7 and the second spring 8 meet the state change process in the opening and closing processes of the box door 02 described above.

[0036] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A limiting and buffering device for the heavy box door of a box-type substation, characterized in that Comprising: A first mounting plate fixedly mounted on the door frame; A second mounting plate fixedly mounted on the cabinet door; A limiting rod, one end of the limiting rod is horizontally rotatably connected to the second mounting plate, a limiting ring is connected to the bottom of the first mounting plate, and the other end of the limiting rod slidably passes through the limiting ring; Two collar rings detachably sleeved on the limiting rod, and the two collar rings are respectively located on both sides of the limiting ring; Springs are respectively sleeved on the limiting rod between the two collar rings and the limiting ring.

2. The heavy box door limit buffer device of the box-type substation according to claim 1, characterized in that, A plurality of through holes arranged at equal intervals along the length direction are formed in the limiting rod, pins are inserted into the through holes, and the collar rings are slidably sleeved on the limiting rod and limited by the pins.

3. The heavy box door limit buffer device for the box-type substation according to claim 1, wherein, The spring between the collar ring close to the rotation connection of the limiting rod and the second mounting plate and the limiting ring is a double-segment spring.

4. The heavy box body door limit buffer device for a box-type substation according to claim 3, characterized in that, The distance between the collar ring close to the rotation connection of the limiting rod and the second mounting plate and the limiting ring is greater than the distance between the other collar ring and the limiting ring, and the length of the double-segment spring is greater than the length of the other spring.

5. The heavy box door limit buffer device for the box-type substation according to claim 1, characterized in that, The second mounting plate extends a "7"-shaped connecting portion towards the limiting rod, the end of the limiting rod is connected with a double-layer connecting plate, and the double-layer connecting plate clamps the connecting portion and is horizontally rotatably connected with the connecting portion.

6. The heavy box body door limit buffer device of the box-type substation according to claim 1, characterized in that, A reinforcing rib is connected between the limiting ring and the first mounting plate.

7. The heavy box body door limit buffer device of the box-type substation according to claim 2, characterized in that, A plurality of gaskets are sleeved on the limiting rod between the collar ring and the spring.

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