A kind of cabinet roller devices
Technical field
The utility model relates to a kind of roller devices, a kind of cabinet roller devices particularly, and it is the roller devices for subrack formula power-supply device, is suitable for all kinds of power-supply devices.
Background technology
Along with the fast development of industrial automation and communications industry, the demand of power-supply device is in continuous increase, and the version of power-supply device is also in continuous variation.According to the knowledge of the applicant, the bigger power-supply device of most of volume and weight is subrack formula power-supply device.The contour structures of subrack formula power-supply device generally is to be made of front panel, rear board, left and right side plate and upper and lower cover plate, generally is furnished with handle in front on the plate, on the rear board blower fan and plug can be arranged fixedly.In actual the use, subrack formula power-supply device is mounted on the frame.Subrack formula power-supply device is in being installed to the process of frame, and its tank floor is direct and frame generation CONTACT WITH FRICTION.The box bottom of power-supply device with the process of frame generation CONTACT WITH FRICTION in, because the deadweight of power-supply device is bigger, will make the box bottom of power-supply device and frame scuffing in various degree occur, thereby influence the overall appearance of cabinet, when situation is serious, the chassis backplane that sustains damage need carry out secondary surface treatment, just can reduce its state of the art.And, because subrack formula power-supply device is heavier, adopt this frame mode with CONTACT WITH FRICTION, obviously be effort and unsafe.
The assembling of power supply cabinet and frame also has a kind of mounting structure usually; this mounting structure is to be provided with groove at the installed surface that frame contacts with cabinet; load onto the guide rail bar in the bottom of cabinet; the guide rail bar enters and carries out the friction-type slip in the groove in the time of installation; utilize the guide rail bar that cabinet is led on the one hand, reduce the contact area of cabinet and frame on the other hand.The advantage of this mounting structure is to have reduced rubbing surface, can be in place very accurately, and deficiency is that mounting structure is to adopt the sliding friction contact, needs earlier the guide rail bar of cabinet to be put into the groove of frame before cabinet is packed into, thereby has increased installation difficulty.If the weight and volume of cabinet increases, mounting hardness can be bigger, and the base plate of cabinet also has scuffing to a certain degree.
Summary of the invention
The purpose of this utility model is, improves at the deficiency that prior art exists, and proposes and study a kind of cabinet roller devices.The utility model can solve existing deficiency in the existing power supply cabinet installation process, it improves the cabinet bottom and cooperates with being in contact with one another of rack rail by roller is installed in the cabinet bottom front both sides that contact with frame at first, thereby alleviates the damage that the weight of cabinet may cause rack rail.Installation personnel only needs the roller of subrack formula power-supply device both sides is placed on the rack rail, just can easily power-supply device be advanced frame along guide rail.
Technical solution of the present utility model is, adopts roller, and roller devices is made up of roller, roller shaft, hold-down screw, installing hole is arranged on the roller, be assembled together by installing hole roller shaft and roller, it is characterized in that, one end of roller shaft has convex shoulder, and pair roller carries out spacing; Be provided with screwed hole in the middle of the roller shaft, roller shaft is fixed by hold-down screw and installation position.
It is characterized in that: the outside dimension of roller shaft is than the little 0.042mm-0.136mm of aperture size of the installing hole on the roller.
It is characterized in that: roller shaft is removed the length of remaining part of convex shoulder greater than the width of roller.
It is characterized in that: the external diameter of convex shoulder is greater than the aperture of the installing hole on the roller external diameter less than roller.
It is characterized in that: the thickness of convex shoulder is 2mm-6mm.
It is characterized in that: convex shoulder be shaped as circle or polygon or truncated cone-shaped.。
It is characterized in that: the screwed hole that is provided with in the middle of the roller shaft runs through roller shaft.
It is characterized in that: the external diameter of roller both ends of the surface is rounded down.
It is characterized in that: roller devices also is furnished with packing ring, and packing ring cooperates with roller shaft and roller is assembled together, and it is spacing that packing ring carries out two ends with the convex shoulder pair roller of roller shaft.
It is characterized in that: the shouldered end of roller shaft has escape, and the other end of roller shaft has the protection step.
The utility model has the advantages that: reasonable in design, simple in structure, be easy to install, the convenient use, cost is lower.The utility model is particularly suitable for the various power supply cabinets of often dismantling separately and installing and other require to use occasion of the present utility model.Roller shaft of the present utility model, roller are easy to make, dimensional accuracy is easy to control, are particularly conducive to batch process.The utility model is isolated roller side and installation position behind the configuration packing ring, can prevent from directly contacting and the frictionally damage installation position with the installation position when roller from rolling.It is roller shaft processing for convenience that the utility model is established escape at roller shaft, establishes escape simultaneously and protect step to be conducive to prevent that foreign matter and dust from falling into the gap of roller shaft and roller.
Description of drawings
Fig. 1, basic structure schematic diagram of the present utility model.
The left-hand stereogram that Fig. 2, roller of the present utility model cooperate with roller shaft.
The dextrad stereogram that Fig. 3, roller of the present utility model cooperate with roller shaft.
The roller shaft that Fig. 4, the utility model adopt is that a kind of convex shoulder is shaped as hexagon roller shaft schematic diagram.
The roller shaft that Fig. 5, the utility model adopt is the end view that a kind of convex shoulder is shaped as hexagon roller shaft schematic diagram.
The roller shaft that Fig. 6, the utility model adopt is that a kind of convex shoulder is shaped as truncated cone-shaped roller shaft schematic diagram.
The roller shaft that Fig. 7, the utility model adopt is the end view that a kind of convex shoulder is shaped as truncated cone-shaped roller shaft schematic diagram.
The roller shaft that Fig. 8, the utility model adopt is the roller shaft schematic diagram that a kind of convex shoulder is shaped as hexagonal shape and band protection step.
The roller shaft that Fig. 9, the utility model adopt is the end view that a kind of convex shoulder is shaped as the roller shaft schematic diagram of hexagon and band protection step.
Number in the figure: 1. roller; 2. roller shaft; 3. hold-down screw; 4. packing ring; 5. installation position.
Embodiment
Below, describe embodiment of the present utility model with reference to the accompanying drawings in detail.
As shown in Figure 1, the utility model has adopted the roller devices that roller 1 is arranged, and roller devices is made of roller 1, roller shaft 2, hold-down screw 3.The installing hole that cooperates with roller shaft 2 is arranged on the roller 1, be assembled together by installing hole roller shaft 2 and roller 1.One end of roller shaft 2 has convex shoulder, and roller devices also is furnished with packing ring 4, and packing ring 4 cooperates with roller shaft 2 with roller 1 and is assembled together, and it is spacing that packing ring 4 carries out two ends with the convex shoulder pair roller 1 of roller shaft 2.Be provided with screwed hole in the middle of the roller shaft 2, the screwed hole that is provided with in the middle of the roller shaft 2 runs through roller shaft 2.Hold-down screw 3 is installed in the screwed hole that is provided with in the middle of the roller shaft 2, and roller shaft 2 is connected and fixed with installation position 5 by hold-down screw 3, packing ring 4.Roller shaft 2 shouldered ends have escape, and the other end of roller shaft 2 has the protection step.
The assemble sequence of roller devices is: at first, roller 1 is installed on the roller shaft 2, adorn packing ring 4 at an end of roller shaft 2 no convex shoulders again, packing ring 4 cooperates with roller shaft 2, the roller 1 that is installed on the roller shaft 2 is freely rotated and do not deviate from from roller shaft 2, with hold-down screw 3 packing ring 4, roller shaft 2 and installation position 5 are connected and fixed again.Roller shaft 2 has an end of convex shoulder and the axial limiting mechanism that packing ring 4 forms pair roller 1.Simultaneously, roller shaft 2 has the installing hole of an end of convex shoulder and roller 1 to constitute the radially position-limit mechanism of pair roller 1.
The utility model adopts stainless steel material to make.The outside dimension of roller shaft 2 is than the little 0.042mm-0.136mm of aperture size of the installing hole on the roller 1.Roller shaft 2 is removed the length of remaining part of convex shoulder greater than the width of roller 1.The external diameter of the convex shoulder of roller shaft 2 is greater than the aperture of installing hole on the roller 1 external diameter less than roller 1, and the thickness of the convex shoulder of roller shaft 2 is 2mm-6mm.The convex shoulder of roller shaft 2 be shaped as polygon or for circular or be truncated cone-shaped.The screwed hole of roller shaft 2 is positioned at the centre of roller shaft 2, runs through roller shaft 2.The external diameter of the both ends of the surface of roller 1 all is rounded down.The utility model is on cabinet or other structural members when using, and roller shaft 2 is fixedlyed connected with the installation position 5 on cabinet or other structural members by hold-down screw 3, packing ring 4.
As Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the roller shaft band convex shoulder that the utility model adopts, the convex shoulder longitudinal section is hexagonal, employing sleeve or other instrument cooperate and tighten when making things convenient for the other end of roller shaft 2 to tighten with hold-down screw 3; The polygon of other that can also select certainly to cooperate with ordinary cartridge adopts ordinary cartridge to cooperate when making things convenient for the other end of roller shaft 2 to tighten with hold-down screw 3 equally and tightens; Preferred version as proposition of the present utility model adopts when implementing.The utility model is on cabinet or other structural members when using, and roller shaft 2 is fixedlyed connected with the installation position 5 on cabinet or other structural members by hold-down screw 3, packing ring 4.Shape (longitudinal section) longitudinal section of the convex shoulder of the roller shaft 2 that the utility model adopts is hexagon, is convenient to employing tool holding roller 1 when roller devices is installed, makes things convenient for roller shaft 2 screw 3 that is fixed to tighten.Roller shaft 2 is provided with escape, and the convex shoulder of escape and roller shaft 2 is adjacent.
As Fig. 6, shown in Figure 7, the roller shaft 2 band convex shoulders that the utility model adopts, the shape of the convex shoulder of roller shaft 2 (longitudinal section) is truncated cone-shaped, adopts sleeve to cooperate when it makes things convenient for the other end of roller shaft 2 to tighten with hold-down screw 3 and tightens; The escape that is provided with simultaneously and protection step are conducive to prevent that foreign matter and dust from falling into the gap of roller shaft 2 and roller 1.
As Fig. 8, shown in Figure 9, the roller shaft 2 band convex shoulders that the utility model adopts, the shape of the convex shoulder of roller shaft 2 (longitudinal section) is hexagonal.The shouldered end of roller shaft is provided with escape, and the other end of roller shaft 2 is provided with the protection step.It is the processing of roller shaft 2 for convenience that the utility model is established escape at roller shaft 2, establishes escape and protection step simultaneously and also helps and prevent that dust from falling into the gap of roller shaft 2 and roller 1.The length that roller shaft 2 deducts convex shoulder, escape, the remaining axle of protection step is slightly less than the width of the convex shoulder of roller 1.
Above content is the explanation of the utility model being done in conjunction with concrete execution mode, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.