JP6508069B2 - Fixing device - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a fixing device used for a carriage that moves a load.

  Conventionally, as described in Patent Document 1, a carriage with a fixing device is used in order to carry and move a heavy object such as an installation. In the configuration of Patent Document 1, in order to fix the carriage, a carriage with a fixing device for fixing the wheels is used. Alternatively, in order to fix the carriage, a carriage with a fixing device is used, which uses a spring to press the leg member against the floor surface. Moreover, in order to prevent the rocking of the carriage with the fixing device, as in Patent Document 2, there is one in which the leg member is provided with the connecting member.

JP, 2001-080524, A JP, 2013-244707, A

  When the bogie is fixed using a fixing device that fixes the wheel itself or a fixing device that presses the leg member against the floor surface by a spring, it can be fixed in the forward and backward directions of the dolly. However, when a heavy load is mounted on the carriage, the carriage may swing in the lateral direction and the vertical direction with respect to the forward direction of the carriage.

  By the way, there is a case where the equipment is operated while being mounted on a carriage for convenience. However, when the carriage swings in the left and right direction and in the vertical direction, electrical noise or mechanical noise may be generated in the facility, which may reduce the capability of the facility. In the configuration as in Patent Document 2, the position of the connecting member is fixed, and the truck is fixed only when the height from the leg member to the ground is a predetermined height. For this reason, when installing in the place where heights differ, or the place where the flatness of the ground is bad, there is a possibility that fixation of a truck may become loose and a truck may rock.

  The present invention has been made in view of the above problems, and its object is to prevent the rocking of the carriage and to fix the carriage precisely even in places where the height from the leg member to the ground is different. To provide.

The present invention is a fixing device used for a carriage (1) that loads a load (50) on a rack (40) and moves the load.
The fixing device includes a protrusion (403), a recess (402), a base member (11), an operation member (12), a leg member (13), an urging member (16), a translation cam (14), a support bar 15) and support bar spring (151).
The convex portion is provided on the lower surface (401) of the gantry in the vertical direction.
The recess is provided inside the protrusion.
The base member is provided on the lower surface and is movable in the vertical direction.
The leg member is accommodated in the base member, is movable in the vertical direction, and contacts the ground when it is lowered.
The biasing member is accommodated in the base member and biases the leg member in the vertical direction.
The operating member is connected to the base member to operate the base member.

The translation cam is provided on the side wall (112) of the base member, and has a slope (142) or a slope (642) which is inclined in a direction approaching the leg member in the vertically upward direction.
The support rod has a rear portion housed in the recess and is provided so as to protrude from the recess toward the leg member, abuts on the inclined surface or the inclined portion, is horizontally movable, and a tip when advanced to the leg member A face (159) abuts the side (131) of the leg member to support the leg member.
The support bar spring is accommodated in the recess, one end is connected to the projection, and the other end is connected to the support bar, and biases the support bar toward the leg member.

  The support rod directly fixes the cradle and the leg members. For this reason, the rigidity of the fixing device is increased, and the rocking of the carriage is prevented. In addition, the position at which the support bar supports the leg member can be moved by the linear motion cam. Thus, the support bar can support the leg members independently of the height from the leg members to the ground. Therefore, it can be precisely fixed even at places with different ground heights.

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram of the trolley with a fixing device by 1st Embodiment of this invention. The arrow line view from the II direction of FIG. The block diagram at the time of raise of the fixing device by 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The block diagram of the linear_motion | direct_drive cam and support rod by 1st Embodiment of this invention. FIG. 5 is a cross-sectional view of FIG. The block diagram in process of descent | fall of the fixing device by 1st Embodiment of this invention. The block diagram at the time of descent | fall of the fixing device by 1st Embodiment of this invention. The block diagram of the fixing device by 2nd Embodiment of this invention. The block diagram of the fixing device by 3rd Embodiment of this invention. The block diagram of the fixing device by 4th Embodiment of this invention. The block diagram of the fixing device by 5th Embodiment of this invention. The block diagram of the fixing device by 6th Embodiment of this invention. The block diagram of the fixing device of a comparative example.

  Hereinafter, a fixing device according to an embodiment of the present invention will be described based on the drawings. In the description of the plurality of embodiments, substantially the same configuration as the first embodiment will be described with the same reference numerals. Moreover, when calling it "this embodiment", 1st-6th embodiment is included. The fixing device of these embodiments is, for example, mounted on a facility as a cargo and used for a carriage for moving the facility.

First Embodiment
As shown to FIG.1, 2, the fixing device 10 is mounted in the trolley | bogie 1 provided with the mount frame 40 which supports the installation 50, and the some wheels 3 which are earth | grounded with the ground G. FIG. In the figure, the forward direction of the carriage 1 is "front", and the backward direction of the carriage 1 is "rear". Further, the opposite side of the ground G is "upper", the ground G side is "lower", the right side is "right" when viewed from the forward direction, and the left side is "left" when viewed from the forward direction. The vertical direction is the same as the vertical direction.

As shown in FIG. 3, the gantry 40 has a convex portion 403 on the lower surface 401. The convex portion 403 is formed with a concave portion 402 which is recessed in the horizontal direction inside. Four wheels 3 are provided on the lower surface 401. FIG. 3 shows a cross-sectional view including the gantry 40 and the fixing device 10 on the rear side.
Returning to FIG. 2, three fixing devices 10 are provided on a plane in the lower surface 401 passing through three points which are not located on the same straight line. The fixing device 10 includes a base member 11, a leg member 13, a spring 16 as a “biasing member”, a fixing pedal 12 as a “operation member”, a linear motion cam 14 and a support rod 15.

  The base member 11 is formed in a tubular shape, is provided on the lower surface 401 side, accommodates the expandable spring 16, and is movable in the vertical direction. The spring 16 has one end 161 connected to the lid 111 of the base member 11 and the other end 162 connected to the upper portion 133 of the leg member 13. The spring 16 biases the leg member 13 in the vertical direction.

  The leg member 13 is T-shaped and has a rectangular cross section, and the upper portion 133 of the leg member 13 is accommodated in the base member 11. The leg members 13 move up and down together with the fixed pedal 12 and the base member 11, and abut on the ground G when lowered. The leg members 13 can fix the carriage 1 by coming into contact with the ground G. Further, the leg member 13 has a plurality of grooves 132 formed in the side surface 131.

  The groove 132 has a rectangular cross section. The grooves 132 may have a polygonal shaped cross section. The groove 132 is formed to have a cross section smaller than the area of the tip end surface 159 of the support portion 153 of the support rod 15 described later. In the drawings, the grooves 132 are exaggerated for the sake of clarity.

  The fixed pedal 12 is connected to the base member 11, and by stepping on the fixed pedal 12, the base member 11 can be operated in the vertical direction. When the leg member 13 abuts on the ground G, the base member 11 is moved downward to press the spring 16 to operate the fixed pedal 12 by depressing the fixed pedal 12.

  The linear motion cam 14 is provided on the side wall 112 of the base member 11, abuts on the support rod 15, and can move in the vertical direction together with the base member 11. The linear movement cam 14 is formed such that a part of the contact surface 141 with the support rod 15 is an inclined surface 142 on the outer surface. The inclined surface 142 is formed to be inclined such that the thickness of the linear motion cam 14, that is, the length in the front-rear direction becomes smaller toward the vertically upward direction. In addition, the slope 142 is formed to be inclined in a direction approaching the leg member 13 vertically upward.

The support rod 15 is formed in a rectangular parallelepiped shape, and the rear portion is accommodated in the recess 402, and is provided so as to protrude from the recess 402 toward the leg member 13, and abuts on the slope 142 and is horizontally movable. When advancing toward the leg member 13, the tip end surface 159 abuts the side surface 131 of the leg member 13 to support the leg member 13. Further, the support rod 15 has a support rod spring 151, a cam sliding rotary body 156, a recess sliding rotary body 157 and a support portion 153.
The support rod spring 151 is extendable and retractable, and is accommodated in the recess 402, one end thereof is connected to the protrusion 403, and the other end is connected to the support rod 15. The support bar spring 151 is horizontally movable by the expansion and contraction of the support bar spring 151 in the horizontal direction.

The cam sliding rotor 156 is provided at the center of the support rod 15. The cam sliding rotor 156 rotates with the movement of the linear motion cam 14 in the vertical direction, and rolls and slides along the contact surface 141.
The recess sliding rotor 157 is provided in contact with the inner surface 404 of the recess 402. The recess sliding rotor 157 rotates with the support rod 15 along with the horizontal movement, and rolls and slides along the inner surface 404.

  As shown in FIGS. 4 and 5, the support portion 153 is formed to project from the cam sliding rotary body 156, and passes between the insertion grooves 143 provided at the center of the linear motion cam 14. By moving the support rod 15 in the horizontal direction, the tip end surface 159 of the support rod 15 abuts on the side surface 131 of the leg member 13 so that the leg member 13 can be supported. FIG. 4 is a cross-sectional view of the linear motion cam 14 and the support rod 15 as viewed from above. Similarly, a base member groove 113 is formed in the base member 11 so that the support rod 15 can pass through the base member 11.

(Action)
The operation of the fixing device 10 will be described.
Returning to FIG. 3, when the carriage 1 is movable, the stationary pedal 12 faces upward, the base member 11 abuts on the gantry 40, and the carriage 1 is not fixed. Since the carriage 1 is not fixed, the equipment 50 can be transported.

  As shown in FIG. 6, when the carriage 1 is fixed by the fixing device 10, the fixed pedal 12 is operated downward. While the fixed pedal 12 operates in the downward direction, the leg member 13 contacts and grounds the ground G. At this time, the cam sliding rotary member 156 rolls, and the support rod 15 relatively moves to the vicinity of the slope 142 together with the support rod 15.

  As shown in FIG. 7, the fixed pedal 12 is operated further downward. At this time, in the fixed pedal 12, the base member 11 moves downward to press the spring 16. As the spring 16 is pressurized, the spring 16 biases the leg member 13. The leg members 13 are pressed against the ground G to fix the carriage 1. At this time, the cam sliding rotary body 156 passes over the slope 142, and the support portion 153 abuts on the leg member 13 to fix the leg member 13.

  When the vehicle 1 is unfixed by the fixing device 10, the fixed pedal 12 is operated upward. When the fixed pedal 12 operates upward, the base member 11 moves upward, the support rod 15 separates from the leg member 13, and the leg member 13 separates from the ground G. When the fixed pedal 12 is further operated upward, the base member 11 abuts on the lower surface 401 of the gantry 40, and the carriage 1 becomes movable.

  As shown in FIG. 13, in the conventional fixing device 90, the spring 93 accommodated in the base member 92 connected to the fixed pedal 91 presses the leg member 94 against the ground G to fix the carriage. In such a configuration, when the heavy equipment is mounted, the leg member 94 supports the gantry 95 via the spring 93, so the gantry 95 may swing in the vertical direction. Furthermore, the rocking of the rack 95 may cause electrical noise and mechanical noise in the equipment, which may reduce the capacity of the equipment. Although there is also a configuration in which a connecting member is provided on the leg member as in Patent Document 2 in order to prevent the frame and the carriage from swinging, the position of the connecting member is fixed, and the height from the leg member to the ground and the ground Depending on the degree of flatness, there is a risk that the fixation may be loosened.

(effect)
(1) Therefore, in the present embodiment, the fixing device 10 is provided inside the convex portion 403 of the gantry 40 and includes the support rod 15 for supporting the leg member 13. The support rods 15 directly fix the leg members 13 to the mount 40 to increase the rigidity of the fixing device 10. The rigidity of the fixing device 10 is increased to prevent the carriage 1 from swinging.

Further, the support rod 15 can be relatively moved in the vertical direction by the linear motion cam 14 provided on the side wall 112 of the base member 11, and the height position at which the support rod 15 supports the leg member 13 can be adjusted. For this reason, the support rod 15 can support the leg member 13 without depending on the height from the leg member 13 to the ground G. Furthermore, the inside of the lower surface 401 passing through three points at which the fixing device 10 is not in line with the carriage 1 Three are provided on the plane of. As a result, even in a place where the height of the ground G is different such that the ground is inclined, the positions are always determined at three points, so that the ground G and the fixing device 10 can be accurately fixed. Since the fixing device 10 can be precisely fixed to the ground G, rocking of the carriage 1 in the vertical direction can be more reliably prevented.

  (2) Since the support rod 15 has the cam sliding rotor 156, the linear motion cam 14 and the support rod 15 have rolling friction. Since the rolling friction has a very small coefficient of dynamic friction as compared to sliding friction, the linear motion cam 14 and the support rod 15 slide smoothly in the vertical direction to suppress the wear between the linear motion cam 14 and the support rod 15 be able to. Also, by the support rod 15 having the recess sliding rotary body 157, wear of the support rod 15 and the inner surface 404 can be similarly suppressed.

  (3) A plurality of grooves 132 having a rectangular cross section smaller than the end surface 159 of the support portion 153 are formed in the side surface 131 of the leg member 13 with which the support portion 153 abuts. The formation of the groove 132 increases the coefficient of static friction when the support portion 153 is in contact with and supported by the side surface 131. As a result, the static friction force directed in the vertical direction between the leg member 13 and the support rod 15 is increased, and the support force with which the support rod 15 supports the leg member 13 is improved. The improvement of the supporting force with which the support rod 15 supports the leg members 13 enhances the effect of preventing the bogie 1 from swinging.

Second Embodiment
The second embodiment is the same as the first embodiment except for the form of the linear motion cam.
As shown in FIG. 8, the linear movement cam 62 is formed in an inclined surface such that the thickness of the linear movement cam 62 decreases with the whole surface of the contact surface 621 with the support rod 15 upward. It is formed in the direction approaching the member 13. In the second embodiment, the same effect as that of the first embodiment can be obtained.

Third Embodiment
In the third embodiment, as in the second embodiment, the third embodiment is the same as the first embodiment except for the form of the linear motion cam.
As shown in FIG. 9, the linear movement cam 63 is formed in an R shape such that the thickness of the linear movement cam 63 becomes larger as a part of the contact surface 631 with the support rod 15 goes upward. . The third embodiment achieves the same effects as the first embodiment.

Fourth Embodiment
The fourth embodiment is the same as the first embodiment except for the form of the linear motion cam and the support rod.
As shown in FIG. 10, the linear movement cam 64 has a rectangular cross section in the left-right direction, and has a cam groove 641 extending in the vertical direction inside.
The cam groove 641 is formed to extend in the vertical direction. In addition, the cam groove 641 has a sloped portion 642 that inclines from the front to the rear at the center and inclines in a direction approaching the leg member 13 upward.

  A groove fitting portion 652 formed in the support rod 65 is engaged with the cam groove 641, and the support rod 65 is movable in the vertical direction along the cam groove 641. In the fourth embodiment, the same effects as in the first embodiment can be obtained.

Fifth Embodiment
The fifth embodiment is the same as the first embodiment except for the form of the groove provided in the leg member.
As shown in FIG. 11, a plurality of V-shaped grooves 72 having a V-shaped cross section smaller than the area of the tip end surface 159 of the support portion 153 are formed on the side surface 711 of the leg member 71. In the drawing, the V-shaped groove 72 is described in an exaggerated manner in order to make the shape intelligible. The fifth embodiment has the same effect as that of the first embodiment.

Sixth Embodiment
The sixth embodiment is the same as the first embodiment except for the configurations of the leg members and the support bar.
As shown in FIG. 12, the leg members 75 have first uneven portions 751 formed by a plurality of grooves provided at equal intervals on the side surface.

  The support rod 76 has a second uneven portion 762 corresponding to the first uneven portion 751 on the tip end surface of the support portion 761. The plurality of second uneven portions are formed by grooves similar to the grooves forming the first uneven portion 751, and can be fitted to the first uneven portion 751. In the drawing, the first uneven portion 751 and the second uneven portion 762 are described in an exaggerated manner in order to make the shapes intelligible. The sixth embodiment has the same effect as that of the first embodiment.

  Furthermore, in the sixth embodiment, when the support rod 76 supports the leg member 75, the first uneven portion 751 and the second uneven portion 762 are engaged with each other, and the support rod 76 and the leg are engaged. The coefficient of static friction with the member 75 can be further increased.

(Other embodiments)
(I) The leg members may have a T-shaped cross section which is not limited to a square, but may have a polygonal columnar shape or a cylindrical shape. Not limited to the shape of the leg members, the same effects as those of the first embodiment can be obtained.
(Ii) With regard to the operation of the support bar, a drive unit having an electromagnetic actuator such as a solenoid may be used without using the spring force of the support bar spring. When the fixed pedal is operated downward, the drive unit may be energized, and the support rod may be in contact with the linear motion cam. The same effect as that of the first embodiment can be obtained.
(Iii) In the case of operating the fixed pedal, it may be an operation member using a drive unit having an electromagnetic actuator such as a solenoid. The operation member is not limited to a fixed pedal operated by a foot, and the base member may be operated using a handle etc. operated by hand. The same effect as that of the first embodiment can be obtained.
(Iv) The fixing device of the present invention is not limited to a carriage capable of transporting equipment, and may be used for a carriage capable of transporting an article such as a small load or a heavy object.

(V) In another embodiment sharing the concept of increasing the coefficient of static friction between the leg member and the support rod, the surface roughness of the side surface of the leg member is increased and the surface roughness of the tip end surface of the support rod is increased. May be As surface roughness, for example, arithmetic mean roughness Ra and maximum height Ry are used. In increasing the surface roughness of the leg members and the support rods, the same effect as that of the first embodiment can be obtained.
(Vi) The groove of the leg member is not limited to a quadrangular prism shape, and may be a polygonal prism shape or a hemispherical shape. The cross-sectional shape of the groove of the leg member may be U-shaped. The groove of the leg member is not limited to the shape, and the same effect as that of the first embodiment can be obtained.
(Vii) The bogie may be provided with three or more fixing devices on a plane passing through three points that are not on the same straight line. The greater the number of fasteners, the better the precision in securing the carriage.
As mentioned above, this invention is not limited to such embodiment, In the range which does not deviate from the meaning of invention, it can implement with various forms.

1 ・ ・ ・ Carriage,
11 · · · Base member, 112 · · · Side wall,
12 ··· Fixed pedal,
13 · · · leg members, 131 · · · side surface,
14 ··· Linear acting cam, 142 ··· Slope,
15 · · · Support rod, 151 · · · Support rod spring, 159 · · · Tip surface,
16 · · · biasing member,
40 · · · Mounting frame, 401 · · · Lower surface,
402 ·············································
50 ・ ・ ・ Transportation goods,
642 ・ ・ ・ Slope.

Claims (8)

It is a fixing device used for a carriage (1) for carrying a load (50) on a rack (40) and moving the load,
A convex portion (403) provided on the lower surface (401) of the gantry in the vertical direction;
A recess (402) provided inside the protrusion;
A base member (11) provided on the lower surface and movable in the vertical direction;
A leg member (13) accommodated in the base member, movable in the vertical direction, and in contact with the ground when lowered;
A biasing member (16) housed in the base member and biasing the leg member in the vertical direction;
An operating member (12) connected to the base member for operating the base member;
A linear motion cam (14) provided on a side wall (112) of the base member and having a slope (142) or a slope (642) which inclines in a direction approaching the leg member toward a vertically upward direction;
A rear portion is accommodated in the recess and provided so as to protrude from the recess toward the leg member, abuts on the slope or the inclined portion, is horizontally movable, and a tip when advanced to the leg member A support rod (15), the surface (159) of which abuts against the side surface (131) of the leg member and supporting the leg member;
A support bar spring (151) housed in the recess, one end connected to the projection, the other end connected to the support bar, and biasing the support bar toward the leg member;
Fixing device provided with   The fixing device according to claim 1, wherein the support bar has a cam sliding rotary body (156) that slides along the slope or the inclined portion of the translation cam.   The fixing device according to claim 1 or 2, wherein the support bar has a recess sliding rotor (157) sliding along the inner surface (404) of the recess.   A groove (132) having a polygonal cross section smaller than the area of the tip end surface (159) of the support rod is formed on the side surface (131) of the leg member. Fixing device as described in.   The leg member according to any one of claims 1 to 3, wherein a V-shaped groove (72) having a V-shaped cross section smaller than the area of the tip end surface (159) of the support bar is formed on the side surface (131). The fixing device according to one item. The leg member has a first uneven portion (751) formed on the side surface,
The fixing device according to any one of claims 1 to 3, wherein a second uneven portion (762) which can be fitted to the first uneven portion is formed on a tip surface of the support bar. The fixing device according to any one of claims 1 to 6,
A plurality of wheels (3) provided on the lower surface (401) of the gantry (40) in the vertical direction;
Equipped with
A dolly capable of transporting equipment as the above-mentioned cargo.   The trolley according to claim 7, wherein three or more fixing devices are provided on the lower surface passing through three points which are not located on the same straight line.

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