Passive inflatable shaft support

Abstract

The utility model relates to the technical field of inflatable shaft auxiliary equipment, and particularly discloses a passive inflatable shaft support which comprises a supporting mechanism and a limiting mechanism, the limiting mechanism is arranged at the upper end of the supporting mechanism, the supporting mechanism comprises a bearing plate, a limiting block is arranged above the bearing plate, and the limiting mechanism comprises a mounting plate and a first arc-shaped plate. The lower end of one side of the mounting plate is connected with a first arc-shaped plate, the side, close to the first supporting plate, of the mounting plate is connected with a supporting shaft, the support is convenient to mount and maintain, the mounting position of the inflatable shaft can be adjusted according to actual use requirements, and the use flexibility of the support is improved; the air expansion shaft can be driven to rotate to perform corresponding winding and unwinding operation without an additional power device, the distance between the shaft head of the air expansion shaft and an original fixing mechanism at the end away from the shaft head can be conveniently adjusted, convenience is provided for installation and use of the air expansion shafts with different lengths, and the application range of the support is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of auxiliary equipment of air expansion shaft, and specifically discloses a passive air expansion shaft support. BACKGROUND

[0002] Air expansion shaft is also called air pressure shaft, expansion shaft, inflation shaft and air expansion roller, is a kind of special winding and unwinding shaft, the surface is pushed up by high-pressure inflation, and the surface is quickly contracted after deflation, air expansion shaft is widely used, mainly suitable for various mechanical equipment needing winding, unwinding and slitting, with the characteristics of short operation time, large carrying capacity, high economy and efficiency and convenient use, before the use of air expansion shaft, air expansion shaft support is needed to provide support for air expansion shaft to ensure the stability of air expansion shaft in use.

[0003] The Chinese patent with the patent number CN203246916U discloses a passive air expansion shaft support composition, comprising: air expansion shaft support and passive seat cover, the air expansion shaft support includes connecting part and supporting part, the first bearing is arranged between the connecting part and the front end part of the passive seat cover, the air expansion shaft support outer pressure cover is arranged on the front end surface of the passive seat cover, the air expansion shaft support inner pressure cover is arranged on the rear end surface of the connecting part, and the first bearing is arranged between the air expansion shaft support outer pressure cover and the air expansion shaft support inner pressure cover. Through the above mode, the utility model is simple and practical, the safety factor is high, the structure is simple and reasonable, and the whole is relatively beautiful, but the above-mentioned support is not convenient for connecting with the original device, leading to the inconvenience of support installation and maintenance, and in the process of use, the other end of the air expansion shaft needs to be connected with additional power equipment to drive the air expansion shaft to rotate to carry out corresponding winding and unwinding operation, which is relatively inconvenient, and the above-mentioned support is not convenient for adjusting the distance between the shaft head of the air expansion shaft and the original fixing mechanism away from the shaft head, which is not conducive to the installation and use of air expansion shafts of different lengths, and to some extent, the application range of the above-mentioned support is limited, therefore, in order to solve the above-mentioned problems, the utility model provides a passive air expansion shaft support. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a passive air expansion shaft support, which is convenient to install and maintain, can adjust the installation position of the passive air expansion shaft according to actual use demand, increases the use flexibility of the support, can drive the passive air expansion shaft to rotate to carry out corresponding winding and unwinding operation without using additional power equipment, saves the cost of using the passive air expansion shaft, is convenient to adjust the distance between the shaft head of the passive air expansion shaft and the original fixing mechanism away from the shaft head, provides convenience for the installation and use of passive air expansion shafts of different lengths, and improves the application range of the support.

[0005] The utility model is realized through the following technical schemes:

[0006] The utility model provides a passive air inflation axle support, including support mechanism and limiting mechanism, the upper end of support mechanism is provided with limiting mechanism, support mechanism includes bearing plate, four sides of bearing plate all are provided with long strip hole, the top of bearing plate is provided with limiting block, the inside of limiting block is provided with limiting sliding slot, one end above limiting sliding slot is provided with first support plate, the below of first support plate is provided with sliding block, the inside of first support plate's upper end is provided with bearing, both sides of first support plate are provided with auxiliary support rod, limiting mechanism includes mounting plate and first arc plate, one side lower end of mounting plate is connected with first arc plate, the top of first arc plate is provided with second arc plate, both sides of first arc plate and second arc plate opposite are provided with arc elastic pad, one end of second arc plate close to mounting plate is provided with two limiting rods in symmetry, one side of mounting plate close to first support plate is connected with support shaft, support shaft passes through the inside of bearing and is with bearing interference fit.

[0007] As a further setting of the above scheme, the limiting sliding slot is provided with a plurality of first mounting holes arranged in a linear array on both sides, the sliding block is in sliding connection with the limiting sliding slot, so as to adjust the installation position of the passive air inflation axle according to the installation requirements of the passive air inflation axle, improve the flexibility of the support and the passive air inflation axle installation, the inside of the sliding block is provided with a connecting hole, the connecting hole and the inside of the first mounting hole are penetrated by a bolt, which helps to limit the position of the sliding block and the components above it, and the connecting column is provided on both sides of the support plate.

[0008] As a further setting of the above scheme, the first double-hole spacer is connected to the threaded segment of the bolt at one of the connecting columns, and the first nut and the second nut are threadedly connected to the threaded segment of the bolt and the connecting column respectively, so as to fix the first support plate and its connecting components after adjusting the position of the first support plate, and fix the installation position of the passive air inflation axle, the plug slot and the plug rod are provided at both ends of the auxiliary support rod respectively, the plug slot is inserted into the connecting column, and the plug rod is inserted into the first mounting hole, so as to further fix the position of the support plate and its connecting components, and keep the limiting mechanism and the passive air inflation axle stable during use.

[0009] As a further setting of the above scheme, the limiting holes are provided on both sides of the mounting plate, the first threaded holes are provided on the sides of the two limiting holes away from each other, the limiting rods penetrate into the inside of the limiting holes and are in sliding connection with the limiting holes, so as to limit the moving direction of the second arc plate, the second threaded holes are provided in the inside of the limiting rods, and the screw is threadedly connected between the second threaded holes and the first threaded holes, so as to preliminarily fix the position of the second arc plate, and the limiting rings are connected to the outside of the limiting rods, so as to avoid the separation of the limiting rods, the second arc plate and the mounting plate.

[0010] As a further arrangement of the above-mentioned scheme, two mounting rods are arranged on the two sides of the first arc-shaped plate, two second mounting holes are arranged on the two sides of the second arc-shaped plate, and mounting rods are arranged in the four second mounting holes.

[0011] As a further arrangement of the above-mentioned scheme, a limiting groove is arranged in the middle of the mounting plate, one end of the shaft head is inserted into the limiting groove, and two arc-shaped elastic pads are respectively pressed onto the two outer sides of the shaft head, so that the shaft head of the passive air inflation shaft is clamped and fixed, and the supporting effect of the support on the passive air inflation shaft is ensured.

[0012] As a further arrangement of the above-mentioned scheme, two counterbores are symmetrically arranged in the first support plate, a second support plate is arranged at the end of the first support plate away from the mounting plate, a counterbores screw is arranged in the counterbores, the counterbores screw is connected with the second support plate, the disassembly and maintenance of the second support plate are facilitated, a connecting head is detachably connected to the end of the support shaft away from the mounting plate, a motor is connected to the end of the connecting head away from the support shaft, a machine base is connected to the outer side of the motor, and the lower end of the machine base is connected with the second support plate, so that the disassembly and maintenance of the above-mentioned components are facilitated, and power is provided for the rotation of the mounting plate, the shaft head and the passive air inflation shaft.

[0013] As a further arrangement of the above-mentioned scheme, a dustproof plug is arranged in the counterbores, the inside of the counterbores is kept clean, and a belt pulley is detachably connected to the end of the support shaft away from the mounting plate, so that the motor and the connecting head can be removed according to the power requirement of the original equipment, the belt pulley is connected with the support shaft, the shaft head and the passive air inflation shaft are driven to rotate by the belt, corresponding winding and unwinding operations are performed, the use mode of the support is enriched, and the applicability of the support is increased.

[0014] The utility model has the following beneficial effects in the process of using:

[0015] The four long holes symmetrically arranged in the bearing plate facilitate the installation of the support at the target installation position, the combination of the sliding groove, the sliding block, the bolt and the plurality of first mounting holes facilitates the adjustment of the position of the first support plate and its connecting components according to the actual use requirement, and the bolt and the second nut are used for fixing, so that the distance between the shaft head of the passive air inflation shaft and the original fixing mechanism at the end away from the shaft head is adjusted, the installation and use of passive air inflation shafts with different lengths are facilitated, and the combination of the auxiliary limiting rod and the connecting column can further fix the support plate from the two sides of the support plate, so that the support plate and its connecting components are further kept stable.

[0016] The combination of the first arc-shaped plate, the second arc-shaped plate, the arc-shaped elastic pad, the mounting rod and the third nut in the limiting mechanism can clamp and fix the shaft head of the passive air inflation shaft, so that the passive air inflation shaft is kept stable, the combination of the limiting hole, the limiting rod and the limiting ring can limit the upward movement direction of the second arc-shaped plate when the shaft head is inserted between the two arc-shaped elastic pads, and the use of the screw can further fix the second arc-shaped plate, so that the second arc-shaped plate is kept stable during rotation of the passive air inflation shaft.

[0017] The combination of the connecting head, the motor and the base can directly drive the supporting shaft, the mounting plate, the shaft head and the passive air inflation shaft to rotate through the motor without using additional power equipment, and the detachable connection of the second supporting plate with the first supporting plate, the connecting head and the supporting shaft facilitates dismounting of the connecting head and the second supporting plate, connecting the pulley with the supporting shaft, so as to drive the pulley, the supporting shaft, the shaft head and the passive air inflation shaft to rotate through the belt, thereby enriching the use mode of the base and the mode of providing power for rotation of the passive air inflation shaft and increasing the practicability of the base. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a first perspective view of the present application;

[0020] Figure 2 It is a second perspective view of the present application;

[0021] Figure 3 It is a perspective view of the present application Figure 1 It is an enlarged view of point A in the present application;

[0022] Figure 4 It is a combined perspective view of the first supporting plate, the sliding block and the bolt in the present application;

[0023] Figure 5 It is a combined perspective view of the second supporting plate and the countersunk screw in the present application;

[0024] Figure 6 It is a perspective view of the auxiliary supporting rod in the present application;

[0025] Figure 7 It is a perspective view of the mounting plate in the present application;

[0026] Figure 8 It is a perspective view of the first arc-shaped plate in the present application;

[0027] Figure 9 It is the perspective view of the second arc-shaped plate in the utility model.

[0028] In the figure: 1, support mechanism;2, limiting mechanism;3, shaft head;11, bearing plate;111, long hole;12, limiting block;121, limiting sliding groove;122, first mounting hole;13, first support plate;131, sliding block;1311, connecting hole;132, bearing;133, countersunk hole;134, dust plug;135, connecting column;136, first nut;14, first double-hole gasket;15, bolt;151, second nut;16, auxiliary support rod;161, plug rod;162, insertion slot;17, second support plate;171, countersunk screw;21, mounting plate;211, limiting hole;212, first threaded hole;213, limiting groove;22, first arc-shaped plate;221, mounting rod;222, second double-hole gasket;223, third nut;224, arc-shaped elastic pad;23, second arc-shaped plate;231, second mounting hole;232, limiting rod;233, second threaded hole;234, limiting ring;24, screw;25, support shaft;26, connecting head;27, motor;28, base;29, pulley. DETAILED DESCRIPTION

[0029] In order to enable personnel in the art to better understand the present application scheme, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Figures 1-9 The present application will be described in detail below in conjunction with the embodiments.

[0031] The embodiment discloses a passive air expansion shaft support, which comprises a supporting mechanism 1 and a limiting mechanism 2, the upper end of the supporting mechanism 1 is provided with the limiting mechanism 2, the supporting mechanism 1 comprises a bearing plate 11, four sides of the bearing plate 11 are provided with long strip holes 111, the upper side of the bearing plate 11 is provided with a limiting block 12, the inside of the limiting block 12 is provided with a limiting sliding groove 121, the upper end of the limiting sliding groove 121 is provided with a first supporting plate 13, the lower side of the first supporting plate 13 is provided with a sliding block 131, the inside of the upper end of the first supporting plate 13 is provided with a bearing 132, the two sides of the first supporting plate 13 are provided with auxiliary supporting rods 16, the limiting mechanism 2 comprises a mounting plate 21 and a first arc-shaped plate 22, one side of the lower end of the mounting plate 21 is connected with the first arc-shaped plate 22, the upper side of the first arc-shaped plate 22 is provided with a second arc-shaped plate 23, the opposite sides of the first arc-shaped plate 22 and the second arc-shaped plate 23 are provided with arc-shaped elastic pads 224, the end close to the mounting plate 21 of the second arc-shaped plate 23 is symmetrically provided with two limiting rods 232, one side of the mounting plate 21 close to the first supporting plate 13 is connected with a supporting shaft 25, the supporting shaft 25 penetrates the inside of the bearing 132 and is in interference fit with the bearing 132.

[0032] As shown in Figure 1 , Figure 2 and Figure 4 , the two sides of the limiting sliding groove 121 are provided with a plurality of first mounting holes 122 arranged in a linear array, the sliding block 131 is in sliding connection with the limiting sliding groove 121, so that the installation position of the passive air expansion shaft can be adjusted according to the installation requirements of the passive air expansion shaft, the flexibility of the support and the passive air expansion shaft installation is improved, the inside of the sliding block 131 is provided with a connecting hole 1311, the connecting hole 1311 and the inside of the first mounting hole 122 simultaneously penetrate a bolt 15, which helps to limit the position of the sliding block 131 and the components above the sliding block 131, and the two sides of the supporting plate are provided with connecting columns 135.

[0033] As shown in Figure 1 , Figure 2 , Figure 4 and Figure 6 , the first double-hole gasket 14 is connected with the threaded section of the bolt 15 at one of the connecting columns 135, the first nut 136 and the second nut 151 are respectively threadedly connected with the threaded section of the bolt 15 and the connecting column 135, so that the first supporting plate 13 and the connected components thereof can be fixed after the position of the first supporting plate 13 is adjusted, and the installation position of the passive air expansion shaft can be fixed, the two ends of the auxiliary supporting rod 16 are respectively provided with a slot 162 and a plug rod 161, the slot 162 is inserted with the connecting column 135, and the plug rod 161 is inserted with the first mounting hole 122, so that the position of the supporting plate and the connected components thereof can be further fixed, and the limiting mechanism 2 and the passive air expansion shaft can be kept stable during use.

[0034] As Figure 1 , Figure 2 , Figure 3 and Figure 7 indicated, the two sides of the mounting plate 21 are provided with limiting holes 211, and the side of the two limiting holes 211 away from each other is provided with a first threaded hole 212, the limiting rod 232 penetrates the inside of the limiting hole 211 and is in sliding connection with the limiting hole 211, which can limit the moving direction of the second arc-shaped plate 23, the inside of the limiting rod 232 is provided with a second threaded hole 233, the second threaded hole 233 and the first threaded hole 212 are in threaded connection with the screw 24, which can preliminarily fix the position of the second arc-shaped plate 23, the outside of the limiting rod 232 is connected with a limiting ring 234, which can avoid the separation of the limiting rod 232, the second arc-shaped plate 23 and the mounting plate 21.

[0035] As Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 9 indicated, the two sides of the first arc-shaped plate 22 are provided with two mounting rods 221, the two sides of the second arc-shaped plate 23 are provided with two second mounting holes 231, the inside of the four second mounting holes 231 is provided with the mounting rod 221, the two same side mounting rods 221 are connected with the second double-hole gasket 222, and the outside of the four mounting rods 221 is in threaded connection with the third nut 223, which can firmly connect the first arc-shaped plate 22 and the second arc-shaped plate 23 together.

[0036] As Figure 1 , Figure 2 and Figure 7 indicated, the middle part of the mounting plate 21 is provided with a limiting groove 213, the inside of the limiting groove 213 is in plug connection with one end of the shaft head 3, and the two arc-shaped elastic pads 224 are in pressure connection with the two sides of the outside of the shaft head 3, which can clamp and fix the shaft head 3 of the passive air inflation shaft and ensure the support effect of the support on the passive air inflation shaft.

[0037] As Figure 1 , Figure 4 and Figure 5As shown, the inside of the first support plate 13 is symmetrically provided with two countersunk holes 133, the end of the first support plate 13 away from the mounting plate 21 is provided with a second support plate 17, the inside of the countersunk hole 133 is provided with a countersunk screw 24171, the countersunk screw 24171 is connected with the second support plate 17, facilitating the disassembly and maintenance of the second support plate 17, the end of the support shaft 25 away from the mounting plate 21 is detachably connected with a connecting head 26, the end of the connecting head 26 away from the support shaft 25 is connected with a motor 27, the outside of the motor 27 is connected with a machine base 28, the lower end of the machine base 28 is connected with the second support plate 17, facilitating the disassembly and maintenance of the above-mentioned components, and at the same time, the motor 27 can provide power for the rotation of the mounting plate 21, the shaft head 3 and the passive air inflation shaft.

[0038] As shown in the figure, Figure 2 As shown, the inside of the countersunk hole 133 is provided with a dust plug 134, which can keep the inside of the countersunk hole 133 clean, and the end of the support shaft 25 away from the mounting plate 21 is detachably connected with a belt pulley 29, which can be connected with the support shaft 25 after the motor 27 and the connecting head 26 are removed according to the power demand of the original equipment, so as to drive the shaft head 3 and the passive air inflation shaft to rotate by using a belt, and perform corresponding winding and unwinding operations, thereby enriching the use mode of the support and increasing the applicability of the support.

[0039] The passive air inflation shaft support disclosed in the embodiment is used before the installation components such as mounting shafts and threaded rods of the target installation point are inserted through the long slot 111, and the support is installed on the target installation point by using corresponding fastening parts. After installation is completed, the first nut 136 and the second nut 151 are respectively unscrewed from the threaded section of the connecting column 135 and the bolt 15 and placed aside using tools, the connecting column 135 and the bolt 15 are respectively pulled out from the two through holes of the first double-hole gasket 14, and the bolt 15 is pulled out from the connecting hole 1311 and the first mounting hole 122, thereby releasing the fixation of the sliding block 131. According to the installation demand of the passive air inflation shaft, the position of the support plate and its connecting components is adjusted, the sliding block 131 is adjusted to slide in the sliding groove, the first mounting hole 122 opposite to the connecting hole 1311 in the sliding block 131 is replaced, and after adjustment and replacement are completed, the bolt 15, the first double-hole gasket 14, the first nut 136 and the second nut 151 are reset, the position of the sliding block 131, the support plate and components above the support plate is fixed, the two auxiliary support rods 16 are respectively installed on the two sides of the first support plate 13, the insertion slot 162 is inserted with the connecting column 135, the insertion rod 161 is inserted with the first mounting hole 122 adjacent to the first mounting hole 122 connected with the bolt 15, and the support plate and its connecting components are further fixed.

[0040] Screw 24 is screwed out from two first threaded holes 212 in sequence, screw 24 is separated from second threaded hole 233, release the fixing of limiting rod 232, using tools to unscrew four third nuts 223 in sequence, the shaft head 3 of passive air inflation shaft is inserted into the gap between two arc-shaped elastic pads 224 from the end of mounting plate 21 away from first arc-shaped plate 22, the end surface of shaft head 3 is attached to the groove bottom of limiting groove 213, using tools to tighten four third nuts 223 in sequence, two arc-shaped elastic pads 224 are extruded to shaft head 3, the shaft head 3 of passive air inflation shaft is fixed, using tools to screw two screws 24 into two first threaded holes 212 in sequence, restore the connection of screw 24 and second threaded hole 233, passive air inflation shaft is installed.

[0041] According to the power condition of the original equipment, the power mode of the passive air inflation shaft is selected, when the belt is needed to drive the passive air inflation shaft to rotate, the machine base 28 is separated from the second support plate 17, the motor 27 and the connecting head 26 are sequentially removed, the countersunk screw 24171 is screwed out from the countersunk hole 133, the second support plate 17 is removed and placed aside, two dust plugs 134 are sequentially plugged into two countersunk holes 133, the pulley 29 is connected with the bearing 132 shaft, and the passive air inflation shaft is rotated by connecting the pulley 29 with the power system of the original equipment through the belt.

[0042] The bearing plate 11, the long hole 111, the first support plate 13, the sliding block 131, the bearing 132, the dust plug 134, the connecting column 135, the first nut 136, the first double-hole gasket 14, the bolt 15, the second nut 151, the second support plate 17, the countersunk screw 24171, the mounting plate 21, the first arc-shaped plate 22, the second double-hole gasket 222, the third nut 223, the arc-shaped elastic pad 224, the second arc-shaped plate 23, the limiting ring 234, the screw 24, the support shaft 25, the connecting head 26, the motor 27, the machine base 28 and the pulley 29 in the passive air inflation shaft support are all general standard parts or parts known by those skilled in the art, and their structure and principle can be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0043] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A passive air-expanding shaft support, comprising a support mechanism and a limiting mechanism, characterized in that, The upper end of the support mechanism is provided with a limiting mechanism. The support mechanism includes a bearing plate, and elongated holes are provided on all four sides of the bearing plate. A limiting block is provided above the bearing plate, and a limiting groove is provided inside the limiting block. A first support plate is provided at one end of the limiting groove, and a slider is provided below the first support plate. A bearing is provided inside the upper end of the first support plate, and auxiliary support rods are provided on both sides of the first support plate. The limiting mechanism includes a mounting plate and a first arc-shaped plate. The lower end of one side of the mounting plate is connected to the first arc-shaped plate, and a second arc-shaped plate is provided above the first arc-shaped plate. Arc-shaped elastic pads are provided on opposite sides of the first and second arc-shaped plates. Two limiting rods are symmetrically provided at the end of the second arc-shaped plate near the mounting plate. A support shaft is connected to the side of the mounting plate near the first support plate. The support shaft passes through the interior of the bearing and is interference-fitted with the bearing.

2. The passive air-expanding shaft support according to claim 1, characterized in that, Both sides of the limiting slide groove are provided with multiple first mounting holes arranged in a linear array. The slider is slidably connected to the limiting slide groove. The slider is provided with a connecting hole inside. Bolts pass through both the connecting hole and the first mounting hole. Both sides of the support plate are provided with connecting posts.

3. A passive air-expanding shaft support according to claim 2, characterized in that, A first double-hole washer is connected to the threaded section of the connecting column and the bolt. A first nut and a second nut are respectively threaded to the threaded sections of the connecting column and the bolt. A slot and a plug are respectively provided at both ends of the auxiliary support rod. The slot is inserted into the connecting column, and the plug is inserted into the first mounting hole.

4. A passive air-expanding shaft support according to claim 1, characterized in that, The mounting plate has limit holes on both sides, and a first threaded hole is provided on the side of the two limit holes that are far apart from each other. The limit rod passes through the interior of the limit hole and is slidably connected to the limit hole. A second threaded hole is provided inside the limit rod. A screw is threaded between the second threaded hole and the first threaded hole. A limit ring is connected to the outside of the limit rod.

5. A passive air-expanding shaft support according to claim 1, characterized in that, Two mounting rods are provided on both sides of the first arc-shaped plate, and two second mounting holes are provided on both sides of the second arc-shaped plate. Mounting rods are inserted through the interior of each of the four second mounting holes. A second double-hole washer is connected between two mounting rods on the same side, and a third nut is threaded onto the outer side of each of the four mounting rods.

6. A passive air-expanding shaft support according to claim 1, characterized in that, The mounting plate has a limiting groove in the middle, and the inner side of the limiting groove is inserted into one end of the shaft head. The two arc-shaped elastic pads are respectively pressed into the outer sides of the shaft head.

7. A passive air-expanding shaft support according to claim 1, characterized in that, The first support plate has two countersunk holes symmetrically arranged inside. A second support plate is provided at the end of the first support plate away from the mounting plate. A countersunk screw is inserted through the countersunk hole and connected to the second support plate. A connector is detachably connected to the end of the support shaft away from the mounting plate. A motor is connected to the end of the connector away from the support shaft. A base is connected to the outside of the motor. The lower end of the base is connected to the second support plate.

8. A passive air-expanding shaft support according to claim 7, characterized in that, The countersunk hole is equipped with a dust plug, and the end of the support shaft away from the mounting plate is detachably connected to a pulley.

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