JP3200550U - Suspension device - Google Patents

Abstract

Provided is a suspension device capable of preventing an accident by shortening a fall distance of an instrument and stopping it when a constant load spring is cut. A support base, an instrument holding portion suspended below the support base, a constant load spring that releasably couples the support base and the instrument holding portion, and the support base and the instrument holding. Winding type anti-falling device having a pulling measure 24b that is pulled out or accommodated according to the proximity to or away from the portion, and that acts to regulate the pulling action of the pulling measure when the pulling speed of the pulling measure exceeds a predetermined value 24 and a movable pulley 27 installed on the instrument holding portion and applied with a tensioning measure drawn out from the wind-up type fall prevention device, and the tip of the applied tensioning measure is fixed or supported on the support base. It is hung around a fixed pulley 24a provided at the base. [Selection] Figure 4

Description

The present invention relates to a suspension device for suspending an instrument such as a heater.

For example, as shown in Patent Literature 1, 2, or 3, a suspension device for suspending a heater, a sheet, a blackboard or the like includes a constant load spring, a constant tension spring, Conston (trademark registration No. 2694551) (hereinafter referred to as “Registered Trademark No. 2694551”). , Referred to as a constant load spring). The constant load spring is a spring that always reciprocates with a constant force, and reduces the operating force required to move the instrument up and down. The constant load spring may be cut due to deterioration of the spring. In this case, there is a possibility that the instrument to be supported may fall carelessly, and it is desirable to take measures to prevent such a phenomenon.

On the other hand, a belt-winding type fall prevention tool is used as an instrument for preventing an accident such as an operator falling from a high place. For example, as shown in Patent Document 4, the belt wind-up type fall prevention device is designed so that when the speed of the belt fed out from the case in which the belt is retracted inward is equal to or higher than a planned value, The lock part incorporated in the is actuated, and the feeding of the belt is instantly restricted.

JP 2005-131528 A JP 2013-256112 A JP 11-290398 A Registered Utility Model No. 3058199

In the suspension device provided with the constant load spring, the constant load spring may be torn due to, for example, fatigue deterioration due to long-term use or the like, and the device to be supported may drop rapidly. To cope with this, the belt tip of the belt wind-up type anti-falling device is connected to the device, and when the device is lowered rapidly, the feeding of this belt is automatically regulated by the lock part, It is conceivable to stop the device in the middle.
However, if the speed of the belt drawn out from the case of the belt wind-up type fall prevention device does not reach the predetermined speed, the lock part will not operate, so if you try to use it indoors with a ceiling height of several meters, it will start falling There is a risk of causing a situation such as collision with another object or an operator before reaching a predetermined speed.
An object of the present invention is to provide a suspension device that can solve such problems.

In order to solve the above problems, a suspension device according to the present invention is capable of approaching and separating between a support base, an instrument holding part suspended below the support base, and the support base and the instrument holding part. A constant-load spring coupled to the support base, and a tension measure that is pulled out or accommodated according to the proximity and separation between the support base and the instrument holding portion, and when the pull-out speed of the tension measure exceeds a predetermined value, the tension measure A roll-up type fall preventive device that acts to regulate the pulling-out operation of, and a movable pulley that is installed in the instrument holding portion and on which a pulling measure pulled out from the roll-up type fall preventive device is applied, The tip of the tensioning measure that is hung is fixed to the support base or hung on a fixed pulley provided on the support base.

According to the present invention, due to the action of the moving pulley, the speed of the pulling measure fed out from the take-up type fall prevention device reaches a predetermined value at a short drop distance after the constant load spring is cut, and the pulling action of the pulling measure is prevented. Is done.

The use state of the hanging apparatus which concerns on this invention is shown, A is a front view, B is a side view. It is the front view which looked at the state which expanded the suspension device periphery in FIG. 1 from the front side. It is the figure which expanded a part in FIG. It is the expanded side view which looked at the suspension apparatus periphery in FIG. 1 from the right side. 3 shows a modified example around the suspension device in FIG. 3, wherein A is a front view of the first modified example, and B is a front view of the second modified example.

Hereinafter, an embodiment of a suspension device according to the present invention will be described with reference to the drawings.
The suspension device 100 includes a support base 1, an instrument holding unit 2, a lift guide unit 3, a constant load spring 4, and a moving pulley 27. The support base 1 can be moved to an arbitrary position on the horizontal plane by the front-rear direction moving means 6a and the left-right direction moving means 6b. The front-rear direction moving means 6a is installed across the pair of left and right front and rear direction guide track members 7a and 7b installed in the indoor ceiling region and directed in the front and rear direction f1, and the left and right front and rear direction guide track members 7a and 7b. And a longitudinal traveling body 8. The front-rear traveling body 8 is provided with wheels 9a, 9b at front and rear portions of the left and right ends, and is guided along the front-rear guide track members 7a, 7b.

The left-right direction moving means 6b is a pair of front-rear left-right guide track members 10a, 10b provided at the front-rear end portions of the front-rear direction traveling body 8, and the left-right direction disposed between the front-rear left-right guide track members 10a, 10b. It consists of a support base 1 which is a traveling body. The support base 1 has a pair of left and right front and rear members 1a and 1b, and a support plate 1c fixed in a bridging manner between the upper surfaces of the front and rear members 1a and 1b. The support plate 1c is composed of a horizontal part a1 and front and rear side parts b1 and b1. Wheels 12 are mounted on the upper surface portions of the front and rear ends of the front and rear facing members 1a and 1b via upright members 11 that can be adjusted in height, and are guided to the left and right guide track members 10a and 10b.

The support base 1 includes a bearing body 13, a vertical turning shaft 14, and a turning body 15. The bearing body 13 is fixed at the center of the horizontal portion a1 of the support plate 1c, and the vertical turning shaft 14 is loosely inserted into a through hole formed at the center of the horizontal portion a1 as shown in FIGS. It is suspended and supported by the direction turning shaft 14 so as to be turnable. The swivel body 15 is fixed to the lower part of the vertical swivel shaft 14, and includes a disk 15a, an edge member 15b, a first suspension support portion 15c, and a pair of front and rear second suspension support portions 15d. The disk 15a is fixed concentrically to the vertical turning shaft 14, and the edge member 15b is fixed to the outer peripheral edge of the upper surface of the disk 15a to reinforce the disk 15a. The first suspension support portion 15c is composed of a pair of first vertical support plates 15c1 and 15c2 each having a trapezoidal shape as viewed from the side, and has a symmetrical arrangement with the vertical rotation axis 14 as the symmetry axis as shown in FIG. Thus, it is being fixed to the lower surface of the disk 15a via the screw member. The pair of second suspension support portions 15d are fixed to the center of the lateral width of the outer surfaces of the first longitudinal support plates 15c1 and 15c2 of the first suspension support portion 15c, and each second suspension support portion 15d is shown in FIG. As shown in FIG. 4, it consists of a pair of second vertical support plates 15d1, 15d2 which are L-shaped. The pair of second vertical support plates 15d1, 15d2 are arranged along the width direction of the outer surface of the first vertical support plate 15c1 or 15c2, and are orthogonal to the outer surfaces of the first vertical support plates 15c1 or 15c2. It is fixed.

The instrument holding part 2 is located below the support base 1 and is equipped with an instrument (a heater in this example) 16 so as to project downward. The instrument holding unit 2 is a U-shaped plate member 17, a screw member fixed to the lower surface of the plate member 17, and a direction perpendicular to the outer surfaces of the first vertical support plates 15 c 1 and 15 c 2 and the first vertical support plate 15 c 1. , 15c2 is provided with a horizontal projecting member 18 projecting outward from the plate member 17 in both lateral directions. The horizontal projecting member 18 is fixed to a rear end of the first vertical support plate 15c1, 15c2 in a direction orthogonal to the outer surface of the first vertical support plate 15c1, 15c2 so that the vertical member 18a projects downward, and the first vertical support plate 15c1. , 15c2 are extended downward from the respective end portions along the lateral width direction through the curved arm members 18b1, 18b2.

As shown in FIGS. 3 and 4, the elevation guide unit 3 guides the instrument holding unit 2 so as to be movable up and down only with respect to the support base 1. The elevating guide 3 is provided with eight link members 19 between each of the first vertical support plates 15c1 and 15c2 and the corresponding side surface portion 17a or 17b of the plate member 17, respectively. This is a pantograph mechanism in which three rhombus parallel link portions are formed continuously in the vertical direction by pivoting the member 19 with a horizontally oriented shaft member 20. In the pantograph mechanism by the lift guide unit 3, when a vertical operation force is applied to the plate member 17, the plate member 17 extends and contracts in the vertical direction with respect to the support base 1. Instead of the pantograph mechanism, for example, an elevating and lowering guide unit 3 may be used that is fitted into a multiple tubular shape such as an extendable antenna and is formed to be vertically extendable.

The constant load springs 4 are arranged in parallel and in pairs, and couple the support base 1 and the instrument holding part 2 so as to be able to approach and separate. The constant load springs 4, 4 are horizontally opposed between the pair of first vertical support plates 15 c 1, 15 c 2 and are symmetrically arranged with the vertical turning shaft 14 as the center of symmetry. Each constant load spring 4 is wound around one reel 21 on the corresponding side provided between the first vertical support plates 15c1 and 15c2, and the reel 21 on each side is between the first vertical support plates 15c1 and 15c2. It comprises a horizontal shaft member 21a stretched over and a drum portion 21b rotatably held by the shaft member 21a. The tips of the constant load springs 4 and 4 pulled out from the reels 21 and 21 are coupled to each other by a coupling measure 22 (flexible one such as a belt or a rope) via a metal fitting 22a. The sum of the tensile forces of these constant load springs 4 and 4 is set to a magnitude substantially equal to the gravity acting on the instrument holding part 2, and unless the external force is applied to the instrument holding part 2 positioned at an arbitrary height, The position is stably held by the support base 1 and the lift guide 3.

On the other hand, a coupling guide wheel 23 is provided on the upper surface side of the plate member 17. The guide wheel 23 is rotatably mounted on a shaft member 23 a that is horizontally stretched between a pair of side surfaces of the plate member 17. The coupling measure 22 is wound around the guide wheel 23 in a U-shape, and is held in a tensioned state by the weight of the instrument holding portion 2 and the tensile force of each constant load spring 4 in use.

When any one of the constant load springs 4 is cut off in the guide wheel 23 and the coupling measure 22, the support by the constant load spring 4 on the other side that is not cut is also lost. This is to prevent the instrument from being tilted by unbalanced support by the constant load spring 4 on the other side that is not cut.

Although the constant load springs 4 are paired, a plurality of pairs can be formed in relation to the magnitude of gravity acting on the instrument holding unit 2. In this case, as described above, for each pair of constant load springs 4, 4, a corresponding coupling measure 22 and a guide wheel 23 are separately provided according to the above.

The wind-up type fall prevention tool 24 winds a tension measure (belt or rope) 24b around a reel in the case 24a via a spring force, and draws out or accommodates the tension measure according to the movement of the instrument holding unit 2. Then, when the speed at which the tensioning measure 24b is pulled out from the case 24a becomes larger than a predetermined value, the lock mechanism in the case 24a operates so as to automatically regulate the extension of the tensioning measure in the case 24a. The wind-up type fall prevention tool 24 is hooked on the second suspension support portion 15d as shown in FIG. The roll-up type fall prevention tool 24 does not exhibit a regulating action with respect to the normal moving speed of the instrument holding unit 2.

The speed increasing mechanism 25 is for pulling out the pulling-out speed of the pulling measure 24b of the wind-up type fall prevention tool 24 from the inside of the case 24a at a speed higher than the lowering speed of the instrument holding part 2, and is shown in FIGS. In this way, a moving pulley 27 that guides the tensioning measure 24b (the moving pulley 27 is a pulley provided in the instrument holding portion 2 but moves up and down relatively with respect to the wind-up type fall prevention device 24, so that it is a “moving pulley”. Provided). The movable pulley 27 is rotatably held around the shaft member 29 via a horizontal shaft member 29 provided on an upper portion of a U-shaped support member 28 fixed to the upper surface of the horizontal extending member 18. The pulling measure 24b drawn downward from the inside of 24a is guided around the outer peripheral surface and led upward. As shown in FIG. 4, the leading end of the pulling measure 24 b thus guided is fixed to the support base 1. By means of the moving pulley 27 installed in the instrument holding part 2, the tension measure 24b of the instrument holding part 2 twice the descending distance is pulled out from the case 24a. The speed is doubled. Due to the short drop distance after the constant load spring 4 is cut, the speed at which the locking mechanism in the case 24a is operated is reached, and the lowering of the instrument holding part 2 is prevented.

The speed increasing mechanism 25 can be modified as follows.
As shown in FIG. 5A, for example, the first suspension support portion 15c of the support base 1 at a position corresponding to the movable pulley 27 is fixed to the fixed pulley 27a (the fixed pulley 27a is relatively to the take-up type fall prevention tool 24). Because it does not move up and down, it is called a “constant pulley”). Then, after the tensioning measure 24b guided by the moving pulley 27 is hung around the fixed pulley 27a and guided downward, the tip of the tensioning measure 24b is fixed to, for example, the upper surface of the horizontal extending member 18. . According to the speed increasing mechanism 25, when the instrument holding part 2 descends, the pulling-out speed of the pulling measure 24b pulled out from the case 24a is three times the descending speed of the instrument holding part 2.

Further, as shown in FIG. 5B, another movable pulley 27b is rotatably provided on the upper surface of the horizontal overhanging member 18 of the instrument holding portion 2 at a position corresponding to the fixed pulley 27a. Then, after the tensioning measure 24b guided by the fixed pulley 27a is hung around the movable pulley 27b and guided upward, the tip of the tensioning measure 24b is locked to the first suspension support portion 15c of the support base 1, for example. State. As a result, when the instrument holding part 2 descends, the pulling speed of the pulling measure 24b pulled out from the case 24a is four times the descending speed of the instrument holding part 2. By using the moving pulleys 27 and 27b and the fixed pulley 27a in this way, the drawing speed can be increased.

The instrument 16 attached to the instrument holding part 2 will be described. The appliance 16 of this example is a heater for drying paint such as an automobile, and as shown in FIGS. 1 to 4, between a pair of arm members 18 b 1 and 18 b 2 at a position below the horizontal overhanging member 18. It is attached. The heater 16 includes three horizontally long heating lamp portions 16a. These heating lamp portions 16a are arranged around the horizontal center lines 16a1 and 16a2 between the coupling members 16b1 and 16b2 arranged on the left and right as shown in FIG. It is attached so that the angle can be changed, and is connected in the same shape. The heater 16 is positioned between the left and right arm members 18b1 and 18b2, and the central portion of the length of the coupling members 16b1 and 16b2 on each side is supported by the fulcrum shafts 16c1 and 16c2 below the corresponding arm members 18b1 and 18b2. It is mounted so that an angle change adjustment operation around 16c1 and 16c2 is possible. The center of gravity of the heater 16 is arranged so as to be almost directly below the vertical turning shaft 14.

Further, as shown in FIG. 4, a control panel 30 for controlling the heater 16 is fixed to the longitudinal member 18 a of the horizontal projecting member 18 of the instrument holding unit 2. An annular grip portion 31 that can be gripped with one hand is provided at the lower central portion of the heater 16, and an artificial operating force for raising and lowering the instrument holding portion 2 is given.

Next, the operation of the above-described suspension device 100 of this example will be described.
When any one of the pair of constant load springs 4 and 4 is cut in the middle of the length direction due to fatigue failure or the like during long-term use of the coating heating device, the pair of constant load springs 4 and 4 is connected to the combination measure 22. Since the holding force is applied to the instrument holding part 2 via the guide wheel 23, both methods of the constant load springs 4 and 4 with respect to the instrument holding part 2 by cutting one of the constant load springs 4 are provided. The holding power disappears. Thereby, the instrument holding | maintenance part 2 falls.

When the instrument holding unit 2 starts to descend, the tensioning measure 24b is related to this descent by the action of the movable pulley 27, and is synchronized with the descending of the instrument holding unit 2 and is twice as fast as the descending speed of the instrument holding unit 2. Then, it is fed out from the case 24a.

As a result, due to the short drop distance after the constant load spring 4 is cut, the speed of the pulling measure 24b drawn out from the case 24a of the wind-up type fall prevention tool 24 reaches the speed at which the lock mechanism 24a in the case 24a is operated. The holding part 2 is prevented from descending.

In this embodiment, since the speed increasing mechanism 25 has a symmetrical structure with the longitudinal turning shaft 14 as the center of symmetry when viewed from above, the constant load spring 4 is cut and the feeding of the tension measure 24b from the case 24a is stopped. At this time, the posture of the appliance holding unit 2 and the heater 16 is held in an upright posture.

DESCRIPTION OF SYMBOLS 1 Support base 2 Instrument holding part 3 Lifting guide part 4 Constant load spring 16 Instrument (heater)
22 Coupling Measure 23 Coupling Measure Guide Wheel 24b Tension Measure 27 Dynamic Pulley 27a Fixed Pulley 27b Dynamic Pulley 100 Suspension Device

Claims (2)

A support base;
An instrument holder suspended below the support base;
A constant load spring that connects the support base and the instrument holding part so as to be able to approach and separate; and
A tension measure that is pulled out or accommodated according to the proximity and separation between the support base and the instrument holding portion is provided, and when the pulling speed of the tension measure exceeds a predetermined value, the pulling action of the tension measure is regulated. A roll-up type anti-falling tool that acts,
A movable pulley that is installed in the instrument holding portion and is provided with a pulling pulley that is pulled out from the roll-up type fall prevention device.
A suspension device characterized in that the end of the tensioning measure that is hung is fixed to the support base or hung on a fixed pulley provided on the support base. The constant load springs are provided in pairs, and the pair of constant load springs are coupled to the support bases with upper ends coupled to each other by a coupling mechanism capable of bending between the lower ends. The suspension device according to claim 1, wherein the suspension device is configured to be hung on a guide for connecting measures provided in a holding portion.