JP2015218455A - Handrail frame of work bench - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handrail frame of a work bench capable of improving the strength of the handrail frame and allowing a worker to climb on/get off from a hatch below an upper crosspiece to a work floor.SOLUTION: The handrail frame of a work bench 1 includes: a pair of vertical frame rods 21; an upper crosspiece 22; and a middle rod 23 to enclose the periphery of the work floor 3. A hatch 25 for allowing a worker to get on the work floor 3 is provided below the upper crosspiece 22. The middle rod 23 is connected to the pair of vertical frame rods 21 being arranged so as to change the position between a closing position X in which the middle rod 23 is made closer to the upper crosspiece 22 to narrow the hatch 25 and an open position Y to get away from the upper crosspiece 22 downward to enlarge the hatch 25.

Description

  The present invention relates to a handrail frame of a work table provided on the outer periphery of a work floor.

  There is a handrail frame that has vertical frame hooks at both ends on the outer periphery of the work floor of the work table, and the handrail frame of this type of conventional work table has an upper rail on top of a pair of vertical frame hooks. The lower part of the upper rail which is connected and fixed and is located above the ladder was used as an elevator for entering the work floor (for example, Patent Document 1).

JP 2012-7372 A

In the conventional case, there is no middle rail that connects the middle part of the pair of vertical frame rods below the upper rail, so that there is a problem that the strength of the handrail frame is weakened.
Therefore, it is conceivable to provide an intermediate beam. However, if the intermediate beam is simply provided below the upper beam, there is a problem in that the lower opening of the upper beam becomes narrow and it is difficult to move up and down to the work floor. .
In view of the above-described problems, the present invention provides a handrail frame for a workbench that can sufficiently raise and lower the strength of the handrail frame by providing an intermediate rail and can be easily raised and lowered from the lift opening below the upper rail to the work floor. The purpose is to do.

Specific means for solving the problems in the present invention are as follows.
The technical means of the present invention for solving this technical problem is installed on the outer periphery of the work floor 3 of the work table 1 and is connected to the pair of vertical frame rods 21 and the upper portions of the pair of vertical frame rods 21. A handrail frame of a work table having an upper rail 22 and a middle rail 23 arranged below the upper rail 22, and the lower portion of the upper rail 22 being an elevator 25 for getting into the work floor 3,
The posture of the pair of vertical frame rods 21 is changed between a closing posture X in which the middle rail 23 approaches the upper rail 22 and narrows the elevator 25 and an opening posture Y in which the elevator 25 is widened away from the upper rail 22. It is in the point which is connected freely.
In addition, another technical means of the present invention has a pair of support arm portions 41 at both ends of the middle beam 23, and the pair of the middle beam 23 is changed to the closed posture X and the opening posture Y. The support arm portion 41 is connected to the vertical frame rod 21 so as to be swingable up and down around a pivot shaft 42 parallel to the middle rail 23.
Further, according to another technical means of the present invention, a pair of vertical frame ridges 21 are provided with support members 37 respectively, and the support members 37 are U-shaped in a plan view opened inwardly inward and outward of the work floor 3. The support arm portion 41 is fitted into the support recess 39, and the pivot shaft 42 is inserted into the support arm portion 41 and the support member 37. .
Further, another technical means of the present invention is that the gripping member 45 that is detachably gripped and fixed to the vertical frame rod 21 from the inside of the work floor 3 so as to hold the middle rail 23 in the closed posture X is provided in the middle. It exists in the point provided in the lift 25 side edge part of the crosspiece 23.

  According to the present invention, it is possible to sufficiently increase the strength of the handrail frame by connecting the middle portions of the pair of vertical frame rods with the intermediate rail. Moreover, when moving up and down on the work floor, the operator can easily move up and down on the work floor by changing the posture of the middle rail to the opening posture and widening the lift opening. In addition, when working on the work floor, the elevator can be narrowed by changing the posture of the middle rail to the closed posture.

1 is an overall perspective view of a work table showing an embodiment of the present invention. It is a perspective view of the upper part of the work bench. It is a front view of the upper part of the work bench. It is a side view of the upper part of the work bench. It is an expansion perspective view of the principal part of the upper part of the work bench. It is a front view of the handrail frame and the edge part of a skirting board. It is a side view of the edge part of the handrail frame and the baseboard. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is the side view which looked at the 1st skirting board and the 2nd skirting board from the inside. It is a front view of the 1st skirting board and the 2nd skirting board. It is a top view by the side of the holding member of a middle frame.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 13 show an embodiment of the present invention. In FIG. 1, an assembly work table 1 includes a main body frame 2 formed in a rectangular parallelepiped shape that is long in the vertical direction, and a rectangular horizontal work floor 3 provided at the upper end of the main body frame 2. .
The main body frame 2 includes four support columns 6 each having a caster 5 at a lower end portion, and an outrigger 7 with a jack attached to a lower portion of each support column 6. Each column 6 is configured by connecting a plurality of vertical pipes in a vertically detachable manner.

The main body frame 2 is formed by connecting two support columns 6 with a reed 10 and connecting a pair of frames 11 provided with a ladder 11 with a large number of crossing braces 9 so as to face each other. The width direction and the opposing direction of the frame body are referred to as the longitudinal direction, and the longitudinal direction can be changed by changing the cross braces 9 and the work floor 3.
1 to 4, the work floor 3 includes a pair of support rods 13 facing in the longitudinal direction and a plurality of aluminum cloth plates 14 arranged horizontally in the width direction. Are connected and fixed to the upper ends of the columns 6 corresponding to the width direction of the work floor 3. Engaging tools 15 project from the four corners of the cloth plate 14, and by engaging and fixing each engaging tool 15 to the pair of support rods 13 from the upper side, the cloth plate 14 is supported by a pair of supports. It is connected and fixed to the collar 13 so as to be detachable.

A pair of handrail frames 17 are provided opposite to both ends in the longitudinal direction of the work floor 3 on which the worker climbs and climbs the ladder 11 of the frame, and a pair of cloth frames 18 are provided at both ends in the width direction of the work floor 3. Are provided opposite to each other. Accordingly, the cloth frames 18 are arranged between the ends of the handrail frames 17 facing each other, and the outer periphery of the work floor 3 is surrounded by the pair of handrail frames 17 and the pair of cloth frames 18.
2-5, the handrail frame 17 which opposes is standingly arranged by the outer periphery of the work floor 3 of the work bench 1, has a pair of vertical frame collar 21 in both ends, and upper part of a pair of vertical frame collar 21 The upper rail 22 connected to the upper rail 22 and the middle rail 23 disposed below the upper rail 22, and a lift 25 for the side corresponding to the ladder 11 below the upper rail 22 to enter the work floor 3. It is said that.

The lower portions of the four vertical frame rods 21 are detachably connected and fixed to the upper ends of the columns 6 of the main body frame 2, respectively.
As shown in FIGS. 6 and 7, a connecting cylinder 27 is fitted into the lower part of the vertical frame rod 21 so as to protrude downward, and is fastened and fixed by a bolt nut 28. A spring plate 29 whose upper side is curved in an inverted U shape is housed in the connection cylinder 27, and a pair of operation pins 30 protruding from the upper portion of the spring plate 29 are provided in the lower portion of the vertical frame rod 21. An engagement pin 32 projecting outward from 31 and projecting from the lower portion of the spring plate 29 projects outward from the connecting cylinder 27, and the operation pin 30 on the same side as the engagement pin 32 is radially inward. The engaging pin 32 is configured to retreat into the connecting cylinder 27 by performing a pressing operation.

When the connecting cylinder 27 is inserted and inserted through the upper end opening of the support column 6, the vertical frame rod 21 protrudes outward from the locking hole 33 of the support column 6 after the engagement pin 32 is once inserted. Engage so as not to pull out upward. Accordingly, the vertical frame rod 21 can be easily connected and fixed to the support column 6 so as not to rotate or be removed in an upward projecting manner.
Further, the lower end of the connecting cylinder 27 is in contact with the receiving pin 34 inserted and held in the support column 6 from above to receive the load of the vertical frame rod 21.

  In FIG. 1 to FIG. 9, a support member 37 is provided on each of the pair of vertical frame rods 21. The support member 37 includes a bifurcated fixing portion 38 fixed to the vertical frame rod 21 and a concave support portion 39 that supports a support arm portion 41 (to be described later) of the intermediate rail 23. The fixing portion 38 is the vertical frame rod. The support member 37 protrudes from the vertical frame rod 21 in the longitudinal direction of the handrail frame 17, and is fixed to the outer peripheral surface of the upper and lower halfway portion 21 by welding or the like.

The concave support portion 39 has a concave portion 39a that is open at the front end side of the support member 37 and opens inward in the inside and outside directions of the work floor 3, and is formed in a U shape in plan view.
The intermediate rail 23 has a pair of support arm portions 41 at both ends thereof, and the support arm portion 41 is fitted into the recess 39 a of the concave support portion 39 of the support member 37, and the support arm portion 41, the support member 37, A pivot shaft 42 is inserted in parallel with the middle rail 23. As a result, the pair of support arm portions 41 are connected to the vertical frame rod 21 so as to be swingable up and down around the pivot shaft 42 parallel to the middle rail 23, and the middle rail 23 is moved inward and outward of the work floor 3. It is restricted to the range that swings through the inside.

As shown in FIG. 8, the pivot shaft 42 is constituted by a bolt shaft of a bolt 43, a cylindrical nut fitting portion 44 is provided on the fixed portion 38 side of the concave support portion 39, and the bolt 43 is a concave support portion. 39 and the support arm portion 41 are inserted from the opposite side of the fixing portion 38, and a nut 46 screwed into the bolt 43 is fitted into the nut fitting portion 44 and is prevented from rotating.
Thus, the middle rail 23 has a pair of vertical frame rods 21 of the handrail frame 17, the closed posture X approaching the upper rail 22 and narrowing the elevator 25 and spaced downward from the upper rail 22. It is connected to the opening posture Y to be widened so that the posture can be freely changed, and the posture is changed to the closing posture X and the opening posture Y through the inside of the work floor 3 in the inner and outer directions. In addition, when the middle rail 23 is in the opening posture Y, the middle rail 23 is placed on a skirting board 61 described later.

A gripping member 45 that is detachably gripped and fixed to the vertical frame rod 21 from the inside in the inside and outside direction of the work floor 3 so as to hold the middle rail 23 in the closed posture X is an end portion (ladder) of the middle rail 23 on the lift opening 25 side. 11 side end part).
As shown in FIG. 13, the gripping member 45 is held at the base of the member main body 47 curved in an arc shape and swingable around the horizontal axis 48 and movably within the range of the long hole 49. A lock body 50 is provided, and the lock body 50 can be freely changed in posture between a member body 47 and a holding posture K for holding and fixing the vertical frame collar 21 and a release posture L for releasing the holding and fixing. A spring 51 for biasing the lock body 50 is provided in the base portion of the member main body 47, and the spring 51 biases the lock body 50 toward the clamping posture K when the lock body 50 is in the clamping posture K, and the release posture. When it becomes L, it is comprised so that the lock body 50 may be urged | biased to the releasing attitude | position L side.

When the intermediate bar 23 is moved from the opening posture Y to the closing posture X and the member main body 47 is externally fitted to the vertical frame rod 21, the inner end portion of the lock body 50 is pressed by the vertical frame rod 21 and the lock body 50. Is changed to the holding posture K and the vertical frame collar 21 is clamped and fixed with the member main body 47. At this time, the spring 51 urges the lock body 50 to the clamping posture K side to clamp the vertical frame collar 21. Hold in a fixed state.
By pulling or pushing the member main body 47 in the direction of the arrow b while pressing the outer end of the lock body 50 in the direction of the arrow a against the bias of the spring 51 from the state of the closed posture X, the intermediate rail 23 is gripped. 45 can be removed from the vertical frame rod 21.

  2 to 5, the fabric frame 18 includes an upper horizontal frame rod 55, a lower horizontal frame rod 56, and a pair of connecting vertical rods 54 that connect them. A gripping member 58 similar to the gripping member 45 of the middle rail 23 is provided at both ends of the upper horizontal frame rod 55 and the lower horizontal frame rod 56, and the upper horizontal frame rod 55 and the lower horizontal frame rod 56 are held by the holding member 58. Thus, the cloth frame 18 is detachably connected to the vertical frame collar 21 of the opposing handrail frame 17.

The holding members 58 at both ends of the upper horizontal frame rod 55 are held in the vertical position by bolts and nuts 57 attached to the vertical frame rod 21.
In FIG. 1 to FIG. 5, first baseboards 61 </ b> A (baseboards 61) are respectively arranged and fixed between the lower portions of the vertical frame ridges 21 of the handrail frame 17 facing each other, and between the lower portions of the vertical frame ridges 21 of each handrail frame 17. The second baseboard 61B (baseboard 61) is arranged and fixed in each case. Accordingly, the first skirting board 61A is arranged along the longitudinal direction of the work floor 3, and the second skirting board 61B is arranged in a direction perpendicular to the first skirting board 61A and along the width direction of the working floor 3. The pair of first skirting boards 61A and the pair of second skirting boards 61B surround the four pieces of the work floor 3.

  As shown in FIGS. 11 and 12, the first baseboard 61A includes a rectangular outer wall a1 that is substantially horizontally long when viewed from the front, an upper wall a2 at the upper edge of the outer wall a1, and a lower wall a3 at the lower edge of the outer wall a1. An upper inner wall a5 projecting downward from the inner end of the upper wall a2, formed in a box shape with the inner side in the inner and outer directions of the work floor 3 open, A lower inner wall a6 protruding upward from the inner end of the lower wall a3 is provided.

At both ends in the longitudinal direction of the first skirting board 61A, mounting recesses 63 formed by cutting the upper wall a1 into a U-shape and cutting the upper inner wall a5 and the lower inner wall a6 are formed.
The second skirting board 61B has a rectangular outer wall b1 that is substantially horizontally long when viewed from the front, an upper wall b2 at the upper edge of the outer wall b1, a lower wall b3 at the lower edge of the outer wall b1, and a pair of longitudinal side walls b4. And an inner wall b5 that is formed in a box shape that is open on the inside and outside of the work floor 3 and protrudes downward from the inner end of the upper wall a2, and a lower inner wall that protrudes upward from the inner end of the lower wall b3. b6.

1 to 7 and FIGS. 10 to 12, a first baseboard fixing tool 65 </ b> A (baseboard fixing) that fixes an end of the first baseboard 61 </ b> A to each lower part of the vertical frame 21 of the handrail frame 17 that is opposed to each other. And a second baseboard fixing tool 65B (baseboard fixing tool 65) for fixing the end of the second baseboard 61B is fixed to both ends of the first baseboard 61A facing each other. .
The first baseboard fixing tool 65A includes a tool main body 67A (tool main body 67) fixed directly to the vertical frame rod 21, and a regulating member 68A (regulating member 68) attached to the tool main body 67A. The main body 67A includes a concave fitting portion 69A (concave fitting portion 69) for fitting the end portion of the first baseboard 61A so as to be freely detachable from above, and a support portion 70A (support portion 70) for supporting the regulating member 68A. And a mounting portion 71 fixed to the lower part of the vertical frame rod 21.

The attachment portion 71 of the tool main body 67A is formed in an arc shape that follows the outer surface of the vertical frame rod 21, and is fixedly attached to the lower portion of the vertical frame rod 21 by welding or the like.
The concave fitting portion 69A protrudes inward in the width direction of the work floor 3 from the attachment portion 71, and has a groove 69a that opens inward in the longitudinal direction of the work floor 3 in a plan view. The recessed fitting portions 69A of the first baseboard fixing tools 65A that are formed and fixed to the vertical frame rods 21 of the facing handrail frame 17 are opposed to each other in the longitudinal direction of the work floor 3, and the opposed recessed shapes By fitting both ends of the first baseboard 61A into the groove 69a of the fitting section 69A from above, the first baseboard 61A is held upright along the widthwise outer end (outer periphery) of the work floor 3. ing.

The support portion 70A is provided on the opening end side of the concave fitting portion 69A, is formed in a vertical square tube shape, and a vertical support hole 73 is formed in the center portion thereof in a penetrating manner. A hollow first engaging recess 74 and second engaging recess 75 are formed on the upper end of the support portion 70A on a straight line.
The regulating member 68A regulates the upward movement so that the end of the first baseboard 61A fitted to the concave fitting portion 69A is not pulled out. The support shaft portion 77 and the restricting portion 78 bent in the horizontal direction from the upper end portion of the support shaft portion 77 are provided in an L shape, and the restricting position 78 is located above the concave fitting portion 69A and the concave shape. The support shaft portion 77 of the restriction member 68A is inserted into the support hole 73 of the support portion 70A so as to move to the retracted position R that is disengaged from the upper side of the fitting portion 69A, and is supported so as to be rotatable about the axis. .

  A lower portion of the support shaft portion 77 of the restricting member 68A protrudes downward from the support portion 70A, a male screw is formed at the protruding end portion, and a nut 81 is screwed. A coil spring 82 as an urging member is externally fitted between the support portion 70 </ b> A below the support shaft portion 77 and the nut 81, and both ends of the coil spring 82 are connected to the support portion 70 </ b> A via a washer 83 externally fitted to the support shaft portion 77. The coil spring 82 is in contact with the nut 81 and urges the support shaft portion 77 downward with respect to the support portion 70A.

Thus, when the restricting portion 78 of the restricting member 68A is moved to the restricting position P by the biasing of the coil spring 82, the first engaging recess 74 is engaged and held, and when the restricting portion 78 moves to the retracted position R, the second engaging portion is retained. The mating recess 75 is engaged and held.
The second baseboard fixing tool 65B is fixed to the vertical frame rod 29 via the first baseboard 61A, and the tool main body 67B (tool main body 67) and the regulation attached to the tool main body 67B. And a member 68B (regulating member 68). The tool body 67B includes a concave fitting portion 69B (concave fitting portion 69) for fitting the end portion of the second baseboard 61B so as to be freely detachable from above, and a support portion 70B (support portion 70) for supporting the regulating member 68B. ) And a fixing portion 85 submerged in the first skirting board 61A.

The fixing portion 85 of the tool body 67B is formed on the outer surface side of the concave fitting portion 69B, and is fitted and fixed to the mounting concave portion 63 of the first base board 61A.
The concave fitting portion 69B of the tool body 67B has a groove 69b that opens inward in the width direction of the work floor 3 in a plan view, and is formed in a U shape. The concave fitting portions 69B of the second baseboard fixture 65B fixed to the respective portions are opposed to each other in the width direction of the work floor 3, and the opposite end portions of the second baseboard 61B are connected to the opposing concave fitting portions 69B from above. By fitting, the second skirting board 61 </ b> B is held upright along the width direction of the work floor 3.

The support portion 70B is provided on the opening end side of the concave fitting portion 69B, and is formed in a vertical cylindrical shape like the support portion 70A of the first baseboard fixing tool 65A, and has a support hole 73 in the vertical direction. The first engaging recess 74 and the second engaging recess 75 having a hollow shape are formed on the upper portion thereof.
The restricting member 68B is provided with a support shaft portion 77 and a restricting portion 78 in an L-shape, like the restricting member 68A of the first baseboard fixture 65A, and the restricting portion 78 is in the restricting position P and the retracted position R. A support shaft portion 77 of the regulating member 68B is supported so as to be movable so as to be rotatable around the axis. Further, a nut 81 and a washer 83 are provided, and a coil spring 82 as a biasing member biases the support shaft portion 77 downward with respect to the support portion 70B.

  According to the embodiment, when the worker ascends to the work floor 3 of the work table 1, the worker climbs the ladder 11 and releases the holding and fixing of the grip member 45 of the middle rail 23 to the vertical frame rod 21. The intermediate rail 23 is swung around the pivot shaft 42 in the direction c shown in FIGS. 7 and 9 to change the posture from the closed posture X to the open posture Y through the inside of the work floor 3 in the inner and outer directions. As a result, the elevator 25 is widened, and the operator can easily get into the work floor 3 from the expanded elevator 25.

  After getting on the work floor 3, the middle rail 23 in the opening posture Y is gripped, and the middle rail 23 is swung around the pivot shaft 42 in the direction d shown in FIGS. If the posture is changed to the closed posture X through the inner side of the direction and the member main body 47 of the gripping member 45 of the intermediate cross 23 is externally fitted to the vertical frame rod 21, the vertical frame rod 21 is gripped and fixed by the gripping member 45, The middle rail 23 is held in the closed posture X. Thereby, when working on the work floor 3, the elevator port 25 can be narrowed.

  Therefore, the strength of the handrail frame 17 can be sufficiently increased by connecting the middle portions of the pair of vertical frame rods 21 with the intermediate rail 23. Moreover, when moving up and down on the work floor 3, the operator can easily move up and down on the work floor 3 by changing the posture of the middle rail 23 to the opening posture Y and widening the lift opening 25. Moreover, when working on the work floor 3, the posture of the middle rail 23 can be changed to the closed posture X, and the elevator 25 can be narrowed.

  Further, according to the embodiment, when the baseboard 61 is arranged and fixed on the outer periphery of the work floor 3, the pair of handrail frames 17 is erected on the work floor 3 in advance, and the handrail frames 17 are paired with the pair of cloth frames 18. Since the first baseboard fixing tool 65A is provided at the lower part of the vertical frame rod 21 of each handrail frame 17, the fitting base 69A of the pair of opposed first baseboard fixing tools 65A is provided with the first baseboard fixing tool 65A. Then, both ends of the first base plate 61A are inserted and fitted from above, and the restriction member 68A is pulled slightly upward to release the engagement of the restriction part 78 with the second engagement recess 75, and then the restriction member 68A. Is rotated in the direction of arrow e around the axis of the support shaft 77 to move the restricting portion 78 of the restricting member 68A to the restricting position P. Thereby, the restricting portion 78 is engaged and held in the first engaging recess 74 at the restricting position P by the bias of the coil spring 82, and the end portion of the first baseboard 61A fitted into the fitting recess 69A is held by the restricting member 68A. The first skirting board 61 </ b> A is disposed and fixed between the lower portions of the vertical frame rods 21 of the handrail frame 17 that is prevented from coming off.

When the second skirting board 61 </ b> B is arranged and fixed on the outer periphery of the work floor 3, the first skirting board 61 </ b> A is fixed to the pair of vertical frame ridges 21. 10 to 12, as shown in FIG. 10 to FIG. 12, the fitting recess 69 </ b> B of the second baseboard fixing bracket 65 </ b> B fixed to the ends of the pair of first baseboards 61 </ b> A facing from the upper side After fitting both ends of the skirting board 61B and pulling the restricting member 68B slightly upward to release the engagement of the restricting portion 78 with the second engaging recess 75, the restricting member 68B is moved to the shaft of the support shaft 77. By rotating in the direction of the arrow g around the center, the restricting portion 78 of the restricting member 68B is moved to the restricting position P. As a result, the restricting portion 78 is engaged and held in the first engaging recess 74 at the restricting position P by the urging of the coil spring 82, and the end portion of the second skirting board 61B fitted into the fitting recess 69B is held by the restricting member 68B. The second skirting board 61 </ b> B is arranged and fixed between the end portions of the first skirting board 61 </ b> A facing each other.

In addition, when removing the first baseboard 61A and the second baseboard 61B from the work floor 3, the first baseboard 61A and the second baseboard 61B can be easily removed while the handrail frame 17 is standing. Can be removed.
In the embodiment described above, the pair of support arm portions 41 are connected to the vertical frame rod 21 so as to be swingable up and down around the pivot shaft 42. You may make it change the attitude | position of the middle crosspiece 23 to the closing attitude | position X and the opening attitude | position Y by directly supporting it with respect to the vertical frame rod 21 so that rocking is possible.

DESCRIPTION OF SYMBOLS 1 Work table 3 Work floor 17 Handrail frame 21 Vertical frame rod 22 Upper frame 23 Middle beam 25 Lifting port 37 Support member 39 Support recessed part 41 Support arm part 42 Pivoting shaft 45 Gripping member 61 Base board 61A 1st base board 61B 2nd Skirting board 65 skirting board fixing tool 65A first skirting board fixing tool 65B second skirting board fixing tool 67 tool main body 67A tool main body 67B tool main body 68 regulating member 68A regulating member 68B regulating member 69 fitting recess 69A fitting recess 69B fitting Recess 70 Support portion 70A Support portion 70B Support portion 71 Mounting portion 73 Support hole 74 First engagement recess 75 Second engagement recess 77 Support shaft portion 78 Restriction portion 82 Coil spring (biasing member)
85 Fixed part X Closed position Y Open position P Restricted position R Retracted position

Claims (4)

It is installed on the outer periphery of the work floor (3) of the work table (1), and is connected to a pair of vertical frame rods (21) and an upper beam (22) connected to the upper portions of the pair of vertical frame rods (21). A handrail frame of a work table having a middle rail (23) disposed below the crosspiece (22) and having an upper and lower opening (25) below the upper crosspiece (22) for entering the work floor (3) Because
A pair of vertical frame rods (21), the middle frame (23) approaches the upper beam (22) and closes up and down (X) and the upper beam (22) is spaced downward from the upper beam (22). A handrail frame for a work table, wherein the handrail frame is connected to an opening posture (Y) for widening the mouth (25) so that the posture can be freely changed.   A pair of support arms (41) are provided at both ends of the middle rail (23), and the pair of supports are arranged so that the middle rail (23) changes its posture between the closed posture (X) and the open posture (Y). The arm portion (41) is connected to the vertical frame rod (21) so as to be swingable up and down around a pivot shaft (42) parallel to the middle rail (23). Handrail frame of work bench.   A support member (37) is provided on each of the pair of vertical frame rods (21), and the support member (37) is a U-shaped support recess in plan view that opens inward in the inner and outer directions of the work floor (3). (39), and the support arm (41) is fitted into the support recess (39), and the pivot shaft (42) is connected to the support arm (41) and the support member (37). The handrail frame of the work table according to claim 2, wherein   A gripping member (45) that is detachably gripped and fixed to the vertical frame rod (21) from the inside of the work floor (3) so as to hold the middle rail (23) in the closed posture (X) is provided in the middle rail ( 23. The handrail frame of the workbench according to any one of claims 1 to 3, wherein the handrail frame is provided at an end portion of the lift opening (25) side of 23).

Images