Heavy large-stroke spring wheel set

Abstract

The utility model relates to a heavy type large-stroke spring wheel set which comprises a C-shaped wheel set support, wheels, springs, screws and height adjusting nuts, the C-shaped wheel set support comprises side plates, an upper top plate and a lower top plate, the screws are arranged on the upper top plate and the lower top plate in a sliding and penetrating mode, and the springs are arranged on the screws between the upper top plate and the lower top plate in a sleeved mode. The bottoms of the screws below the lower top plate are connected with wheels, and the height adjusting nuts are arranged on the screws between the springs and the lower top plate. According to the heavy-duty large-stroke spring wheel set, the distance between the wheel and the ground is changed by adjusting the height of the height adjusting screw rod, and the heavy-duty large-stroke spring wheel set is suitable for being used in a vertical hinged door with a large fall between the door opening position and the door closing position.

Description

Technical Field

[0001] The utility model belongs to the technical field of spring wheel sets, in particular to a heavy-duty large-stroke spring wheel set. Background Art

[0002] In the nuclear system, in order to ensure the protective capability of the physical protection barrier, all-steel swing doors are installed at the entrances and exits for personnel or emergency passage. The passage width of the swing door can usually reach 10-12 meters, the height is 3 meters, and the weight of a single door leaf is 800 kilograms. At this time, an auxiliary supporting wheel set needs to be installed on the door leaf; at the same time, because the bottom road surface of the swing door is uneven and the door leaf is relatively long, according to the normal construction specifications of the road surface, the height difference of 12 meters of the road surface can reach 120mm, so there is a large gap between opening the door and closing the door. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a heavy-duty large-stroke spring wheel set to address the deficiencies in the prior art, and the stroke of the wheel set can be manually adjusted to meet the needs of scenes with different height differences.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heavy-duty large-stroke spring wheel set comprises a C-type wheel set bracket, a wheel, a spring, a screw and a height adjustment nut. The C-type wheel set bracket comprises a side plate, an upper top plate and a lower top plate. The screw is slidably inserted into the upper top plate and the lower top plate. The spring is sleeved on the screw between the upper top plate and the lower top plate. The bottom of the screw below the lower top plate is connected to the wheel. The height adjustment nut is arranged on the screw between the spring and the lower top plate.

[0006] In order to better realize the utility model, further optimization is made in the above structure, and a limit nut is arranged on the screw rod above the upper top plate.

[0007] In order to better realize the utility model, further optimization is made in the above structure, and the limiting nut is a locking nut.

[0008] In order to better realize the utility model, further optimization is made in the above structure, and limit baffles parallel to the wheels are arranged on both sides of the lower top plate.

[0009] In order to better realize the utility model, further optimization is made in the above structure, and the spring is a manganese steel pressure spring.

[0010] In order to better realize the utility model, further optimization is made in the above structure, and the length of the spring is 200-300mm.

[0011] In order to better realize the utility model, further optimization is made in the above structure, and a gasket is further arranged between the height adjustment nut and the spring.

[0012] In order to better realize the utility model, further optimization is made in the above structure, and the C-type wheel set bracket, screw rod, height adjustment nut and limit nut are all made of stainless steel.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The heavy-duty large-stroke spring wheel set provided by the utility model changes the distance between the wheel and the ground by adjusting the height of the height-adjusting screw, and is suitable for use with a swing door with a large drop between the door opening position and the door closing position. A limit nut is arranged on the screw above the upper top plate to prevent the screw from falling off, and the length of the spring sandwiched in the middle can be changed by adjusting the distance between the limit nut and the height-adjusting screw, thereby changing the elastic supporting force of the spring. Limit baffles parallel to the wheel are arranged on both sides of the lower top plate to limit the moving track of the wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is an axonometric view of the utility model heavy-duty large-travel spring wheel set;

[0017] Figure 2 This is the front view of the heavy-duty large-travel spring wheel set of the utility model;

[0018] Figure 3 It is a side view of the heavy-duty large-travel spring wheel set of the utility model.

[0019] In the figure:

[0020] 1-C-type wheel bracket, 101-side plate, 102-upper top plate, 103-lower top plate, 2-wheel, 3-spring, 4-screw, 5-height adjustment nut, 6-limit nut, 7-limit baffle, 8-gasket. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] Reference Figure 1-Figure 3 The utility model provides a heavy-duty large-stroke spring wheel group, including a C-type wheel group bracket 1, a wheel 2, a spring 3, a screw 4 and a height adjustment nut 5. The C-type wheel group bracket 1 includes a side plate 101, an upper top plate 102 and a lower top plate 103, wherein the side plate 101 is fixedly arranged at the inner bottom of the door leaf. Compared with being installed at the bottom of the door leaf, the bottom gap of the door leaf can be reduced and the safety protection capability can be improved. The screw 4 is slidably penetrated on the upper top plate 102 and the lower top plate 103, and the spring 3 is sleeved on the screw 4 between the upper top plate 102 and the lower top plate 103. The length of the spring 3 is 200-300mm. The spring 3 is a manganese steel pressure spring, which is suitable for use with heavy doors. The bottom of the screw rod 4 below the lower top plate 103 is connected to the wheel 2, and the height adjustment nut 5 is set on the screw rod 4 between the spring 3 and the lower top plate 103. By adjusting the height of the height adjustment nut 5, the height of the wheel 2 at the bottom of the screw 4 is adjusted to change the distance between the wheel 2 and the ground. It is suitable for use with swing doors with a large drop between the opening and closing positions.

[0025] An anti-loosening limit nut 6 is provided on the screw rod 4 above the upper top plate 102. Firstly, it can prevent the screw rod 4 from falling off the upper top plate 102. Secondly, by adjusting the distance between the limit nut 6 and the height adjustment screw rod 5, the length of the spring 3 sandwiched in the middle can be changed, and the elastic supporting force of the spring 3 can be changed according to the weight of the door leaf.

[0026] The existing wheel sets are divided into two types: universal wheels and fixed wheels. However, in actual use, when the universal wheel is used to open and close the door, the wheel set will twist in direction due to the change in the door opening direction. In this process, the door leaf is very heavy; while the fixed wheel can only move in a straight line in one direction, but the moving direction of the swing door is arc-shaped, and the fixed wheel cannot deflect when used, and the resistance is large. For this reason, limit baffles 7 parallel to the wheels 2 are provided on both sides of the lower top plate 103, so that the wheels 2 have a certain deflection ability when moving in an arc, and will not twist in direction when the door opening direction changes, causing the door leaf to become stuck and heavy.

[0027] A gasket 8 is also provided between the height adjustment nut 5 and the spring 3 to increase the bottom area of ​​the supporting spring 3 .

[0028] The C-type wheel bracket 1, the screw rod 4, the height adjustment nut 5 and the limit nut 6 are all made of stainless steel to improve the corrosion resistance.

[0029] During installation, the device is fixed to the inner bottom of the door leaf through the side plate 101, the height of the wheel 2 from the ground is adjusted according to the difference between the door opening position and the door closing position, and the elastic supporting force of the spring 3 is changed according to the weight of the door leaf.

[0030] When in use, the door leaf is pushed, and the wheel 2 moves up and down with the ups and downs of the ground. The ups and downs of the ground are compensated by the expansion and contraction capacity of the spring 3, and the wheel 2 can move in an arc following the door leaf.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A heavy-duty, long-travel spring wheel set, characterized in that: The invention comprises a C-shaped wheel bracket (1), a wheel (2), a spring (3), a screw (4) and a height adjustment nut (5); the C-shaped wheel bracket (1) comprises a side plate (101), an upper top plate (102) and a lower top plate (103); the screw (4) is slidably arranged on the upper top plate (102) and the lower top plate (103); the spring (3) is sleeved on the screw (4) between the upper top plate (102) and the lower top plate (103); the bottom of the screw (4) below the lower top plate (103) is connected to the wheel (2); and the height adjustment nut (5) is arranged on the screw (4) between the spring (3) and the lower top plate (103).

2. The heavy-duty large-travel spring wheel assembly according to claim 1, characterized in that: A limiting nut (6) is provided on the screw rod (4) above the upper top plate (102).

3. The heavy-duty large-travel spring wheel assembly according to claim 2, characterized in that: The limiting nut (6) is a locking nut.

4. The heavy-duty large-travel spring wheel assembly according to claim 3, characterized in that: Position limiting baffles (7) parallel to the wheels (2) are provided on both sides of the lower top plate (103).

5. The heavy-duty large-travel spring wheel assembly according to claim 4, characterized in that: The spring (3) is a manganese steel pressure spring.

6. The heavy-duty large-travel spring wheel assembly according to claim 5, characterized in that: The length of the spring (3) is 200-300 mm.

7. The heavy-duty large-travel spring wheel assembly according to claim 6, characterized in that: A gasket (8) is also provided between the height adjustment nut (5) and the spring (3).

8. The heavy-duty long-travel spring wheel assembly according to any one of claims 2 to 7, characterized in that: The C-shaped wheel assembly bracket (1), the screw rod (4), the height adjustment nut (5) and the limit nut (6) are all made of stainless steel.

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