Adjustable spring support

Abstract

The utility model discloses an adjustable spring support which comprises a left side U-shaped support and a right side U-shaped support which are horizontally arranged in parallel, a pair of bearing plates which are horizontally arranged front and back in parallel, and four longitudinal adjustable spring assemblies, the upper ends of the four adjustable spring assemblies are connected with the bearing plates, and the lower ends of the four adjustable spring assemblies are connected with the left side U-shaped support and the right side U-shaped support. The lower ends of the four adjustable spring assemblies are connected with the left U-shaped support and the right U-shaped support, the bottoms of the left U-shaped support and the right U-shaped support are connected with a horizontal wall, and the rear sides of the left U-shaped support and the right U-shaped support are connected with a vertical wall through vertical plates. The bearing plate is also provided with four rapid installation pressing feet which are respectively used for connecting the longitudinal rib plates at the left and right sides of the front and rear cover plates of the bus duct. And the quick mounting presser foot is connected with the bearing plate through a fastener. The device has the characteristics of simple structure, good versatility, fast installation, high production efficiency and the like, and is mainly used for vertical installation of the bus duct in the vertical shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution equipment, in particular to a component for installing a bus duct, in particular to an adjustable spring bracket for vertically installing a bus duct. Background Art

[0002] In the power supply system of high-rise buildings, bus duct systems are widely used due to their large current carrying capacity, flexible tapping, and beautiful appearance. During the vertical installation of bus ducts in high-rise buildings, each wall needs to share the weight of each layer of bus ducts, and spring brackets are needed to install and fix each layer of bus ducts. Traditional spring brackets use clamp parts to clamp and fix the bus duct shell. Its structure is as follows Figure 1 As shown, it includes an outer ground bracket 1, an inner ground bracket 2, a left U-shaped bracket 3, a right U-shaped bracket 4, an adjustable spring assembly 65 including a compression spring 17, and a clamp 21. The outer ground bracket 1 and the inner ground bracket 2 are arranged parallel and symmetrically, with the bottom fixed to the horizontal wall via expansion screws, and the inner side of the inner ground bracket 2 is fixed to the vertical wall via expansion screws. The left U-shaped bracket 3 and the right U-shaped bracket 4 are arranged parallel and symmetrically above the outer ground bracket 1 and the inner ground bracket 2, forming a crisscross structure. The clamp 21 includes a left half-hoop 62 and a right half-hoop 63, and is connected to the upper end of the adjustable spring assembly 65 via left and right hanging ears 61 and 64. The lower end of the adjustable spring assembly 65 is connected to the upper surface of the left U-shaped bracket 3 and the right U-shaped bracket 4. During installation, the busbar housing is placed within the left half-hoop 62 and the right half-hoop 63 and fastened with external hexagonal bolts 22 and external hexagonal nuts 25. It can be seen that the traditional spring bracket has many parts and has a high manufacturing cost. The clamp and the busbar housing are easily deformed during installation and clamping. The process is cumbersome, the installation quality is unstable, and the installation efficiency is low. Summary of the Invention

[0003] The utility model aims to solve the above-mentioned technical problems existing in the prior art and aims to provide an adjustable spring bracket.

[0004] To solve the above problems, the present invention adopts the following technical solutions: an adjustable spring bracket, comprising a left U-shaped bracket and a right U-shaped bracket arranged horizontally and in parallel, a pair of front and rear horizontally parallel supporting plates, and four longitudinal adjustable spring assemblies, the upper ends of the four adjustable spring assemblies are connected to the supporting plates, and the lower ends of the four adjustable spring assemblies are connected to the left U-shaped bracket and the right U-shaped bracket. It is characterized in that the bottoms of the left U-shaped bracket and the right U-shaped bracket are connected to the horizontal wall, and the rear sides of the left U-shaped bracket and the right U-shaped bracket are connected to the vertical wall through vertical plates; the supporting plate is also provided with four quick-installation pressure feet for connecting the left and right longitudinal ribs of the front and rear cover plates of the bus duct respectively; the quick-installation pressure feet are connected to the supporting plate by fasteners.

[0005] The utility model provides an adjustable spring bracket, in which the bottoms of the left U-shaped bracket and the right U-shaped bracket are directly connected to the horizontal wall, and the rear sides are connected to the vertical wall through vertical plates. The weight of the bus duct is distributed to each layer of the wall, and there is no need to set up a pair of inner and outer ground brackets, which can reduce the number of parts and reduce the manufacturing cost.

[0006] This utility model features an adjustable spring bracket that uses four quick-install pressure feet to mate with the left and right longitudinal ribs of the front and rear bus duct covers to install the bus duct. This structure eliminates the need to clamp the entire bus duct, and the bus duct shell is protected from pressure and deformation. During installation, simply tighten the hexagonal nuts with a socket wrench to secure the quick-install pressure feet to the support plate, allowing for quick installation of the bus duct, thereby improving installation quality and efficiency.

[0007] As an improvement of the present invention, the left U-shaped bracket and the right U-shaped bracket are symmetrically arranged with their openings facing outwards for easy operation.

[0008] As a further improvement of the present invention, the main profiles of the left and right U-shaped brackets are welded to the rear vertical plate, which is provided with a set of first long waist holes for installing expansion screws. During installation, the expansion screws are used to fix the vertical plate to the vertical wall.

[0009] As a further improvement of the present invention, the bottom front ends of the left and right U-shaped brackets are provided with a set of second long waist holes for installing expansion screws. During installation, the main profiles of the left and right U-shaped brackets are fixed to the horizontal wall with expansion screws.

[0010] As a further improvement to the present invention, the upper surfaces of the left and right U-shaped brackets are provided with a third set of elongated holes for connecting an adjustable spring assembly. During installation, the front-to-back position of the adjustable spring assembly can be adjusted to accommodate installation requirements for bus ducts of varying heights.

[0011] As a further improvement of the present invention, the carrier plate is L-shaped, comprising a horizontal portion and a vertical portion. The vertical portion is connected to the quick-install presser foot and has a set of fourth elongated slots formed therein, the elongated slots being arranged in a left-right direction. The horizontal portion is connected to the adjustable spring assembly and has a set of circular holes formed therein. During installation, the vertical portion of the carrier plate contacts the front and rear surfaces of the busbar housing.

[0012] As a further improvement to the present invention, the adjustable spring assembly includes a compression spring and a double-ended screw. The compression spring is mounted on the double-ended screw. The double-ended screw is a cylindrical structure with two external threads at the middle. A flat washer and an external hexagonal nut are provided at the upper end. The upper and lower surfaces of the flat washer contact the lower surface of the support plate and the upper end of the compression spring, respectively. The external hexagonal nut is placed above the upper surface of the support plate, so that the upper end of the double-ended screw and the support plate are connected in an up-and-down floating manner. The top external hexagonal nut is used for position limiting. The lower end of the double-ended screw is connected to the lower end of the compression spring via a flat washer and an adjusting nut. By adjusting the upper and lower positions of the adjusting nut at the lower end of the double-ended screw, the compression spring is forced to deform and generate elastic force to support the weight of the bus duct. The compression spring can also automatically compensate for changes in the deformation of the compression spring caused by thermal expansion and contraction of the bus duct. The ends of the double-ended screw are connected to the left and right U-shaped brackets via two sets of upper and lower flat washers and external hexagonal nut assemblies.

[0013] As a further improvement to the present invention, the quick-install presser foot has a U-shaped body, comprising a first arm and a second arm arranged in parallel, and a connecting plate connecting the first and second arms at the top. The first and second arms are each provided with a hook-shaped claw on the same side; the connecting plate is provided with a mounting hole. During installation, the hook-shaped claw contacts the longitudinal ribs of the bus duct cover, and bolts pass through the mounting holes in the connecting plate, the long waist holes in the support plate, and the flange locking nuts. The quick-install presser foot can slide left and right along the long waist holes in the support plate before being tightened. Once positioned, the bus duct can be quickly installed using only a socket wrench.

[0014] As a further improvement of the present invention, the hook-shaped claw is designed with a guide slope and a pressing surface. The guide slope is used to guide the longitudinal ribs of the bus duct cover to quickly enter the hook-shaped claw, and the pressing surface is used to press the longitudinal ribs of the bus duct cover to meet the requirements of rapid positioning and pressing functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the spring bracket structure in the prior art.

[0017] Figure 2 This is a schematic diagram of the structure of an adjustable spring bracket of the utility model.

[0018] Figure 3 This is a front view of an adjustable spring bracket of the utility model.

[0019] Figure 4 yes Figure 3 Top view of .

[0020] Figure 5 yes Figure 3Left view of .

[0021] Figure 6 The utility model is an axonometric drawing of a quick-install presser foot.

[0022] Figure 7 This is a front view of a quick-install presser foot of the utility model.

[0023] Figure 8 yes Figure 7 Top view.

[0024] Figure 9 yes Figure 7 Left view.

[0025] Figure 10 This is the main view of the utility model in use state.

[0026] Figure 11 It is a diagrammatic view of the utility model in use state.

[0027] In the figure, 1 is the outer ground bracket, 2 is the inner ground bracket, 3 is the left U-shaped bracket, 4 is the right U-shaped bracket, 5 is the outer hexagon bolt, 6 is the flat washer, 7 is the elastic washer, 8 is the outer hexagon nut, 9 is the flat washer, 10 is the elastic washer, 11 is the outer hexagon nut, 12 is the flat washer, 13 is the elastic washer, 14 is the outer hexagon nut, 15 is the flat washer, 16 is the adjusting nut, 17 is the compression spring, 18 is the flat washer, 19 is the outer hexagon nut, 20 is the stud screw, 21 is the clamp, 22 is the outer hexagon bolt, 23 is the flat washer, 24 is the elastic washer, 25 is the outer hexagon nut, 26 is the left U-shaped bracket, 27 is the right U-shaped bracket, 28 is the support plate, 29 is the quick-install pressure foot, 30 is the flange surface locking nut, 31 is the square neck bolt, 32 is the bus duct, 33 is a vertical wall, 34 is a horizontal wall, 35 is a wall hole, 36 is the first long waist hole, 37 is the fourth long waist hole, 38 is the third long waist hole, 39 is the second long waist hole, 40 is an expansion screw, 41 is a front arm part, 42 is a rear arm part, 43 is a connecting part, 44 is a square hole, 45 is a hook-shaped claw, 46 is a pressing surface, 47 is a guide slope, 48 is a bus duct rear cover, 49 is a bus duct front cover, 50 is the right longitudinal rib of the bus duct front cover, 51 is the left longitudinal rib of the bus duct front cover, 52 is the right longitudinal rib of the bus duct rear cover, 53 is the left longitudinal rib of the bus duct rear cover, 55 is the hook-shaped claw of the first arm, 61 is a left hanging ear, 62 is a left half hoop, 63 is a right half hoop, 64 is a right hanging ear, 65 is an adjustable spring assembly, and 66 is a vertical plate. DETAILED DESCRIPTION

[0028] Figure 1 The defects of the spring support structure in the prior art have been described above and will not be repeated here.

[0029] Reference Figures 2 to 5 The utility model is an adjustable spring bracket, which has a bilaterally symmetrical structure as a whole, including a left U-shaped bracket 26 and a right U-shaped bracket 27 arranged horizontally and parallel to each other, a pair of support plates 28 arranged horizontally and parallel to each other in front and behind, and four longitudinal adjustable spring assemblies 65, the upper ends of the four adjustable spring assemblies 65 are connected to the support plate 28, and the lower ends of the four adjustable spring assemblies 65 are connected to the left U-shaped bracket 26 and the right U-shaped bracket 27, the bottoms of the left U-shaped bracket 26 and the right U-shaped bracket 27 are connected to the horizontal wall 34, and the rear sides of the left U-shaped bracket 26 and the right U-shaped bracket 27 are connected to the vertical wall 33 through the vertical plate 66; the support plate 28 is also provided with four quick-installation pressure feet 29 for connecting the left and right longitudinal ribs of the front and rear cover plates of the bus duct respectively; the quick-installation pressure feet 29 are connected to the support plate 28 by fasteners.

[0030] The left and right U-shaped brackets 26 and 27 are symmetrically positioned, with their openings facing outward for ease of operation. The main profiles of the left and right U-shaped brackets 26 and 27 are welded to the rear vertical plate 66. The rear vertical plate 66 is provided with a set of first elongated holes 36 for mounting expansion screws 40. During installation, the expansion screws 40 are used to secure the vertical plates 66 to the facade wall 33.

[0031] The bottom front ends of the left and right U-shaped brackets 26 and 27 are provided with a set of second long waist holes 39 for installing expansion screws 40. During installation, the main profile parts of the left and right U-shaped brackets 26 and 27 are fixed to the horizontal wall 34 with expansion screws 40.

[0032] The upper surfaces of the left U-shaped bracket 26 and the right U-shaped bracket 27 are provided with a set of third long waist holes 38 for connecting the adjustable spring assembly 65. During installation, the front and rear positions of the adjustable spring assembly 65 can be adjusted to meet the installation requirements of bus ducts of different heights.

[0033] The carrier plate 28 is L-shaped and comprises a horizontal portion and a vertical portion. The vertical portion is connected to the quick-install presser foot 29 and defines a set of fourth elongated slots 37 arranged in a left-right orientation. The horizontal portion is connected to the adjustable spring assembly 65 and defines a set of circular holes. During installation, the vertical portion of the carrier plate contacts the front and rear surfaces of the busbar housing.

[0034] The adjustable spring assembly 67 includes a compression spring 17 and a stud screw 20. The compression spring 17 is sleeved on the stud screw 20. The stud screw 20 is a cylindrical structure with external threads at both ends. A flat washer 18 and an external hexagonal nut 19 are provided at the upper end. The upper and lower surfaces of the flat washer 18 are in contact with the lower surface of the carrier plate 28 and the upper end of the compression spring 17 respectively. The external hexagonal nut 19 is placed above the upper surface of the carrier plate 28, so that the upper end of the stud screw 20 and the carrier plate 28 are connected in an up and down floating manner, and the top external hexagonal nut 19 is used for limiting. The lower end of the stud screw 20 is connected to the lower end of the compression spring 17 through a flat washer 15 and an adjusting nut 16. By adjusting the upper and lower positions of the adjusting nut 16 at the lower end of the stud screw, the compression spring 17 is forced to deform and generate elastic force to support the weight of the bus duct. The compression spring 17 can also automatically compensate for the changes in the deformation of the compression spring caused by the thermal expansion and contraction of the bus duct. The ends of the double-headed screw 20 are clamped to the upper horizontal plates of the left and right U-shaped brackets through an upper fastening assembly consisting of a set of flat washers 12, elastic washers 13 and external hexagonal nuts 14 and a lower fastening assembly consisting of another set of flat washers 9 and external hexagonal nuts 8, and are connected to the left and right U-shaped brackets.

[0035] Reference Figures 6 to 9 The main body of the quick-install presser foot 29 is a U-shaped structure, including a first arm 41 and a second arm 42 arranged in parallel, and a connecting plate 43 connecting the first arm 41 and the second arm 42 at the top.

[0036] The first arm 41 has a hook-shaped claw 55 on one side of its bottom, and the second arm 42 also has a hook-shaped claw 45 on the same side. Each hook-shaped claw 45, 55 has a guide slope 47 and a pressing surface 46. The guide slope 47 is used to guide the longitudinal ribs of the bus duct cover plate to quickly enter the hook-shaped claw, and the pressing surface 46 is used to press the longitudinal ribs of the bus duct cover plate to meet the requirements of rapid positioning and pressing functions.

[0037] In this embodiment, the first arm 41 and the second arm 42 have substantially the same structure. The hook claw 55 of the first arm and the hook claw 45 of the second arm also have substantially the same structure.

[0038] The connecting plate is provided with a mounting hole 44. In this embodiment, the mounting hole 44 is a square hole to fit the installation of the square neck bolt 31.

[0039] Reference Figure 10 and Figure 11 The quick-install presser foot 29 of the present invention is located on the left and right sides of the front and rear covers of the bus duct 32. There are four 29-1, 29-2, 29-3, and 29-4, which are respectively connected to the left and right longitudinal ribs of the front and rear covers of the bus duct.

[0040] Taking the quick-install pressure foot 29-1 as an example, during installation, the pressing surface 46 of the hook-shaped claw contacts the right longitudinal rib 50 of the bus duct front cover 49. The square-neck bolt 31 is inserted through the square hole 44 and the long waist hole 37 of the support plate. The flange-faced locking nut 30 is screwed into the square-neck bolt 31 to tighten. Before tightening, the quick-install pressure foot 29 and square-neck bolt 31 can be slid left and right along the long waist hole 37 of the support plate. Once positioned, the bus duct can be quickly installed using only a socket wrench.

[0041] Using the same method, the quick installation pressure foot 29-2 is fastened to the left longitudinal rib 51 of the front cover of the bus duct, the quick installation pressure foot 29-3 is fastened to the right longitudinal rib 52 of the rear cover of the bus duct, and the quick installation pressure foot 29-4 is fastened to the left longitudinal rib 53 of the rear cover of the bus duct, thereby realizing the quick installation of the bus duct.

[0042] The left and right U-shaped brackets and support plates of this utility model are machined from steel profiles or plates, while the quick-install presser foot is stamped from steel plates. The surfaces are hot-dip galvanized or spray-coated, resulting in excellent mechanical and corrosion resistance. The compression spring and double-ended screw are universal components, and their sizes can be selected as needed. All fasteners are standard. All of these components are easily available.

[0043] The utility model provides an adjustable spring bracket, which has the characteristics of simple structure, good versatility, quick installation, high production efficiency, etc. It is mainly used for the vertical installation of bus ducts in vertical shafts and is an economical and practical product.

[0044] It should be understood that the above description is only an illustration of the present invention, not a limitation of the present invention, and any invention that does not exceed the essential spirit of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An adjustable spring bracket, comprising a pair of horizontally parallel left and right U-shaped brackets, a pair of horizontally parallel front and rear support plates, and four longitudinally adjustable spring assemblies, wherein the upper ends of the four adjustable spring assemblies are connected to the support plates, and the lower ends of the four adjustable spring assemblies are connected to the left and right U-shaped brackets, characterized in that The bottoms of the left and right U-shaped brackets are connected to the horizontal wall, and the rear sides of the left and right U-shaped brackets are connected to the vertical wall through vertical plates; the support plate is also provided with four quick-installation pressure feet for connecting the left and right longitudinal ribs of the front and rear covers of the bus duct respectively; the quick-installation pressure feet are connected to the support plate through fasteners; the left and right U-shaped brackets are symmetrically arranged, and the openings face outward; the main profile parts of the left and right U-shaped brackets are welded to the rear vertical plates, and a group of first long waist holes for installing expansion screws are opened on the rear vertical plates; a group of second long waist holes for installing expansion screws are provided at the bottom front ends of the left and right U-shaped brackets; the upper surfaces of the left and right U-shaped brackets are provided with a group of The third long waist hole connected to the adjustable spring assembly; the supporting plate is an L-shaped structure, including a horizontal part and a vertical part; the vertical part is connected to the quick-install pressure foot, and a group of fourth long waist holes are opened on it, and the fourth long waist holes are arranged in the left and right directions; the horizontal part is connected to the adjustable spring assembly, and a group of round holes are opened on it; the adjustable spring assembly includes a compression spring and a double-headed screw, and the compression spring is sleeved on the double-headed screw, and the upper end of the double-headed screw is provided with a flat washer and an external hexagonal nut, and the upper and lower surfaces of the flat washer are in contact with the lower surface of the supporting plate and the upper end of the compression spring respectively, and the external hexagonal nut is placed above the upper surface of the supporting plate; the lower end of the double-headed screw is connected to the lower end of the compression spring through a flat washer and an adjusting nut, and is connected to the left and right U-shaped brackets through two sets of upper and lower flat washers and external hexagonal nut assemblies.

2. An adjustable spring bracket according to claim 1, characterized in that The main body of the quick-install presser foot is a U-shaped structure, including a first arm and a second arm arranged in parallel, and a connecting plate connecting the first arm and the second arm at the top, and the first arm and the second arm are respectively provided with a hook-shaped claw on the same side; a mounting hole is opened on the connecting plate.

3. An adjustable spring bracket according to claim 2, characterized in that The hook-shaped claw is designed with a guiding inclined surface and a pressing surface.

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