Portal crane for stair lifting

Abstract

To make it possible to easily perform the positioning of a trolley beam at a horizontal fixing position even if a heavy object such as a hoisting machine and a control panel for an elevator and the like is lifted via a high working place such as a stairway while preventing the work time required for the entire lifting work of the heavy object from being drastically increased.SOLUTION: A portal type auxiliary fixture for stairway lifting includes an upper side portal type structure and a lower side portal type structure installed on a stairway and a trolley beam for connecting the upper side portal type structure and the lower side portal type structure. A guide mechanism for guiding the trolley beam is provided for at least one of the upper side portal type structure and the lower side portal type structure.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a gate-type lifting device for staircases, and more particularly to a gate-type lifting device for staircases that is suitable for lifting heavy objects such as elevator hoists and control panels via stairs. [Background technology]

[0002] Generally, elevator renovation work requires, for example, lifting heavy objects such as a hoist and control panel via the building's stairs to the elevator machine room installed on the building's roof.

[0003] To carry out the above work, typically two legs made of single-tube pipes or the like are fixed to connecting members such as H-shaped steel beams, and these are placed at the top and bottom of the stairs, and a trolley beam made of H-shaped steel beams or the like is placed and fixed on the top and bottom feet of the stairs. Heavy objects such as hoists and control panels are lifted up the stairs using a portal-type stairlift lifting device.

[0004] An example of a prior art document for fixing the above-mentioned upper foot, lower foot, and trolley beam is a fastener for fixing H-shaped steel beams and C-shaped steel beams for construction, as described in Patent Document 1.

[0005] The fastener described in Patent Document 1 connects and fastens the C-shaped steel and H-shaped steel, for example, by engaging the lip of a C-shaped steel with a groove formed in the fastener, arranging the C-shaped steel and H-shaped steel so that they are facing perpendicular to each other, and pressing the flange portion of the H-shaped steel from above with a bolt inserted into a bulge provided in the fixing part and a pad provided at the tip of the bolt. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2005-325633 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, with the fastener described in Patent Document 1 mentioned above, the horizontal fixing position of the H-beam relative to the C-beam is determined visually, making it difficult to fix it in the specified position in high work locations such as stairs. In addition, complex cutting processes are required to form the bulges and grooves of the fastener, which results in a significant amount of time being required for the work.

[0008] The present invention has been made in consideration of the above-mentioned points, and its object is to provide a gate-type lifting device for staircase lifting, which enables easy positioning of the horizontal fixed position of the trolley beam, even when heavy objects such as elevator hoists and control panels are lifted via high work locations such as stairs, and which does not significantly increase the overall work time for lifting heavy objects. [Means for solving the problem]

[0009] In order to achieve the above object, the portal structure for lifting loads on stairs of the present invention is provided with an upper side portal structure and a lower side portal structure installed on the stairs, and a trolley beam connecting the upper side portal structure and the lower side portal structure, The trolley beam is provided on at least one of the upper side gate structure and the lower side gate structure. A guide A guide mechanism is provided to the upper side gate structure comprises two upper side pipe members arranged on the upper staircase of the staircase and an upper side connecting member which connects and fixes the two upper side pipe members, and the lower side gate structure comprises two lower side pipe members arranged on the lower staircase of the staircase and a lower side connecting member which connects and fixes the two lower side pipe members, the upper side gate structure and the lower side gate structure are connected at their central tops by the trolley beam, a reinforcing member is arranged across both the two upper side pipe members and the two lower side pipe members, and the guide mechanism is fixed to the upper side or lower side connecting member, The staircase lifting gate type elevator comprises a trolley fixed to the trolley beam in a rotatable manner, and a chain block for lifting a heavy object onto the trolley. The trolley is configured such that a roller provided on the trolley moves between the upper side gate structure and the lower side gate structure along a flange portion of the trolley beam, The guide mechanism is fixed to the upper or lower connecting member by a first fixing member so that a linear guide portion provided on the trolley beam side of the guide mechanism abuts against a flange end portion of the flange portion of the trolley beam, At both ends in the width direction of the linear guide portion, there is provided an oblique guide portion that guides the trolley beam and slides when the flange portion of the trolley beam is inserted into the lower part of the protruding portion of the guide mechanism that protrudes so as to cover the flange portion of the trolley beam, The guide mechanism comprises a protrusion that protrudes so as to cover the flange portion of the trolley beam, and a second fixing member that is arranged so as to penetrate the protrusion from above and fix the protrusion, and the second fixing member presses the upper part of the flange portion of the trolley beam. Effect of the Invention

[0011] According to the present invention, even when heavy objects such as elevator hoists and control panels are lifted via high work locations such as stairs, the horizontal fixed position of the trolley beam can be easily positioned, and the overall work time for lifting the heavy object is not significantly increased. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view showing the overall configuration of a portal-type lifting structure for staircases according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing the vicinity of a fixed guide mechanism used in the first embodiment of the gate-type lifting device for staircases of the present invention. [Diagram 3]FIG. 2 is a top view showing the vicinity of a fixed guide mechanism used in the first embodiment of the gate-type lifting device for staircases of the present invention. [Figure 4(a)] This is a top view showing the state in which a fixed guide mechanism is fixed to one side of the upper connecting member using the first and second fixing members, and the other parts are fixed with rail clips and a third fixing member, used in Example 1 of the gate-type lifting device for staircases of the present invention. [Figure 4(b)] This is a top view showing the state in which a fixed guide mechanism is fixed to one side of the upper connecting member and the lower connecting member used in Example 1 of the gate-type staircase lifting device of the present invention with the first and second fixing members, and the remaining parts are fixed with rail clips and the third fixing member. [Figure 4(c)] This is a top view showing the state in which fixed guide mechanisms are fixed to both sides of the upper connecting member and the lower connecting member by first and second fixing members, which are used in Example 1 of the gate-type lifting device for staircases of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The gate-type lifting device for staircases of the present invention will be described below based on the illustrated embodiment. In each drawing, the same components are designated by the same reference numerals. EXAMPLES

[0014] FIG. 1 shows the overall configuration of a gate-type lifting platform for staircases according to a first embodiment of the present invention.

[0015] As shown in FIG. 1, the staircase lifting gate 1 of this embodiment is roughly composed of an upper gate structure 3a composed of an upper connecting member 4 that connects and fixes two upper pipe members 6a1 and 6a2 arranged on the upper staircase 11a of the staircase 11, a lower gate structure 3b composed of a lower connecting member 5 that connects and fixes two lower pipe members 6b1 and 6b2 arranged on the lower staircase 11b of the staircase 11, a trolley beam 2 made of H-shaped steel or the like that connects (connects) the upper gate structure 3a and the lower gate structure 3b at their central tops, and two reinforcing members 10a and 10b that are arranged across the upper pipe members 6a1 and 6a2 and the lower pipe members 6b1 and 6b2 to prevent them from spreading or deforming. A fixed guide mechanism 12 is fixed to the upper connecting member 4 as a means for fixing the upper gate structure 3a and the trolley beam 2. The fixed guide mechanism 12 may be fixed to the lower connecting member 5 as a means for fixing the lower gate structure 3b and the trolley beam 2 together.

[0016] In addition, in the staircase lifting gate structure 1, an upper side gate structure 3a is arranged on a predetermined step of the upper staircase 11a of the staircase 11, and a lower side gate structure 3b is arranged on a predetermined step of the lower staircase 11b of the staircase 11.

[0017] Furthermore, the staircase lifting gate structure 1 is equipped with a trolley 7 fixed to the trolley beam 2 so as to be capable of rolling, and a means for lifting heavy objects 9 such as a hoist or control panel onto the trolley 7, such as a chain block 8, and the trolley 7 is configured so that rollers (not shown) provided on the trolley 7 move (rollably) between the upper side gate structure 3a and the lower side gate structure 3b along the flange portion 2a of the trolley beam 2.

[0018] In addition, when lifting heavy objects 9 such as a hoist or a control panel, an operator operates the chain block 8 to hoist it up, moves the trolley 7 which is rotatably fixed to the trolley beam 2 horizontally in the direction of the upper staircase 11a of the staircase 11, and then suspends it above the staircase 11.

[0019] As shown in Figures 2 and 3, the trolley beam 2 is placed on the top of the upper connecting member 4, and the fixed guide mechanism 12 is fixed by a first fixing member 18 consisting of a bolt and a nut so that the linear guide portion 14 of the fixed guide mechanism 12 abuts against the flange end portion 2b of the flange portion 2a of the trolley beam 2.

[0020] In addition, the fixed guide mechanism 12 has a protrusion 13 that protrudes so as to cover the flange portion 2a of the trolley beam 2, and has a second fixing member (such as a bolt) 19 that is arranged so as to penetrate the protrusion 13 from above and fixes the protrusion 13, and this second fixing member 19 is a mechanism that presses the upper part of the flange portion 2a of the trolley beam 2.

[0021] In addition, at both ends of the linear guide portion 14 provided on the fixed guide mechanism 12, there are provided oblique guide portions 15 that guide the trolley beam 2 and assist in insertion. In addition, at the tip of the protruding portion 13, there is provided a chamfered portion 16 that guides the trolley beam 2 and assists in insertion. In addition, there is provided a gap 17 between the lower portion of the protruding portion 13 and the flange portion 2a.

[0022] A rail clip 20 is provided on the side opposite to the side where the fixed guide mechanism 12 is installed, and the flange portion 2a on the rail clip 20 opposite to the side where the fixed guide mechanism 12 is installed is fixed by a third fixing member 21 consisting of a bolt and a nut. Furthermore, as shown in Fig. 3, the width dimension L2 of the fixed guide mechanism 12 is set to be equal to or shorter than the width dimension L1 of the upper connecting member 4.

[0023] In addition, the dimension between the flange portion 2a of the trolley beam 2 and the protrusion 13 of the fixed guide mechanism 12 is set to be larger than the thickness dimension of the flange portion 2a of the trolley beam 2. This makes it easier for the flange portion 2a of the trolley beam 2 to enter the gap 17.

[0024] 4(a), 4(b) and 4(c) show the locations and number of members of the fixed guide mechanism 12 used in this embodiment.

[0025] Figure 4(a) shows a state in which the fixed guide mechanism 12 is fixed to one side of the upper connecting member 4 (the left side of Figure 4(a)) with the first and second fixing members 18 and 19, and the remaining parts are fixed with the rail clip 20 and the third fixing member 21; Figure 4(b) shows a state in which the fixed guide mechanism 12 is fixed to one side of the upper connecting member 4 and the lower connecting member 5 (the left side of Figure 4(b)) with the first and second fixing members 18 and 19, and the remaining parts are fixed with the rail clip 20 and the third fixing member 21; and Figure 4(c) shows a state in which the fixed guide mechanism 12 is fixed to both sides of the upper connecting member 4 and the lower connecting member 5 (the left and right sides of Figure 4(c)) with the first and second fixing members 18 and 19.

[0026] In addition, in Figures 4(a), 4(b) and 4(c), the fixed guide mechanism 12 is positioned on the left side when viewed from above, and the rail clip 20 is positioned on the right side, but the fixed guide mechanism 12 and the rail clip 20 may be positioned in the opposite direction to the above.

[0027] In the fixed guide mechanism 12 of this embodiment configured as described above, when assembling the staircase lifting gate 1 at the start of lifting operations, the fixed guide mechanism 12 is provided with a straight guide portion 14, so by positioning the straight guide portion 14 of the fixed guide mechanism 12 so that it abuts against the flange end 2b of the trolley beam 2, the fixed position of the trolley beam 2 can be easily determined.

[0028] In addition, the fixed guide device 12 is equipped with a protrusion 13 that protrudes so as to cover the flange portion 2a of the trolley beam 2, and a second fixing member 19 that is arranged so as to penetrate the protrusion 13 from above and fixes the protrusion 13, and this second fixing member 19 has a mechanism that presses the upper part of the flange portion 2a of the trolley beam 2, so that the trolley beam 2 can be easily fixed by tightening, for example, a bolt of the second fixing member 19.

[0029] In addition, diagonal guide sections 15 that guide the trolley beam 2 and assist in insertion are provided on both ends of the straight guide section 14 provided on the fixed guide mechanism 12, so that when the flange section 2a of the trolley beam 2 is inserted into the lower part of the protrusion section 13, it can be slidably guided along the diagonal guide sections 15.

[0030] In addition, a chamfered portion 16 is provided at the tip of the protrusion 13 to guide the trolley beam 2 and assist in insertion, so that even when the flange portion 2a of the trolley beam 2 is inserted perpendicularly to the upper connecting member 4, it is guided along the chamfered portion 16, and can be easily guided to the fixed position.

[0031] In addition, since a gap 17 is provided in the vertical direction between the lower part of the protrusion 13 and the flange part 2a of the trolley beam 2, even if the trolley beam 2 is slightly tilted, the tilt can be absorbed by the gap 17, allowing the trolley beam 2 to be inserted and fixed.

[0032] Furthermore, since the width dimension L2 of the fixed guide mechanism 12 is set to be equal to or shorter than the width dimension L1 of the upper connecting member 4, the fixing position can be determined without strictly checking the perpendicularity of the upper connecting member 4 and the trolley beam 2.

[0033] Furthermore, as shown in Figures 4(a), 4(b), and 4(c), the location of use of the fixed guide mechanism 12 and the number of users can be determined arbitrarily, and the effect can be achieved even in one location.

[0034] According to this embodiment configured as described above, when the work location is high up on the stairs 11 and the trolley beam 2 is fixed to the upper side gate structure 3a and the lower side gate structure 3b, the horizontal fixing position can be easily positioned, improving the ease of assembly of the gate structure 1 for stair lifting, shortening the overall work time for lifting heavy objects such as the elevator hoist and control panel, and also improving safety during assembly of the gate structure 1 for stair lifting.

[0035] The present invention is not limited to the above-described embodiments, and includes various modified examples. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the configurations described. In addition, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration. [Explanation of symbols]

[0036] 1...gateway for lifting stairs, 2...trolley beam, 2a...flange portion of trolley beam, 2b...flange end portion of trolley beam, 3a...upper side gate structure, 3b...lower side gate structure, 4...upper connecting member, 5...lower connecting member, 6a1, 6a2...upper pipe members, 6b1, 6b2...lower pipe members, 7...trolley, 8...chain block, 9...heavy load, 10a, 10b...reinforcing members, 11...stairs, 11a...upper staircase, 11b...lower staircase, 12...fixed guide mechanism, 13...protrusion, 14...straight guide portion, 15...diagonal guide portion, 16...chamfered portion, 17...gap, 18...first fixing member, 19...second fixing member, 20...rail clip, 21...third fixing member.

Claims

1. A staircase lifting gate structure comprising an upper side gate structure and a lower side gate structure installed on a staircase, and a trolley beam connecting the upper side gate structure and the lower side gate structure, At least one of the upper side gate structure and the lower side gate structure is provided with a guide mechanism for guiding the trolley beam, the upper side gate structure comprises two upper side pipe members arranged on the upper staircase of the staircase and an upper side connecting member which connects and fixes the two upper side pipe members, and the lower side gate structure comprises two lower side pipe members arranged on the lower staircase of the staircase and a lower side connecting member which connects and fixes the two lower side pipe members, the upper side gate structure and the lower side gate structure are connected at their central tops by the trolley beam, a reinforcing member is arranged across both the two upper side pipe members and the two lower side pipe members, and the guide mechanism is fixed to the upper side or lower side connecting member, The staircase lifting gate type elevator comprises a trolley fixed to the trolley beam in a rotatable manner, and a chain block for lifting a heavy object onto the trolley. The trolley is configured such that a roller provided on the trolley moves between the upper side gate structure and the lower side gate structure along a flange portion of the trolley beam, The guide mechanism is fixed to the upper or lower connecting member by a first fixing member so that a linear guide portion provided on the trolley beam side of the guide mechanism abuts against a flange end portion of the flange portion of the trolley beam, At both ends in the width direction of the linear guide portion, there is provided an oblique guide portion that guides the trolley beam and slides when the flange portion of the trolley beam is inserted into the lower part of the protruding portion of the guide mechanism that protrudes so as to cover the flange portion of the trolley beam, The guide mechanism comprises a protrusion that protrudes so as to cover the flange portion of the trolley beam, and a second fixing member that is arranged so as to penetrate the protrusion from above and fix the protrusion, and the second fixing member presses against the upper part of the flange portion of the trolley beam.

2. The staircase lifting gate according to claim 1, The guide mechanism is formed in an L-shape when viewed from the front, and the corners of the lower ends of the protrusions of the longitudinal parts of the L-shaped guide mechanism are provided with chamfered portions that incline from halfway through the tip of the longitudinal part of the protrusion toward the underside of the longitudinal part of the protrusion, and serve to assist in guiding the flange part of the trolley beam when it is inserted perpendicularly into the upper or lower connecting member, and a gap is provided between the lower part of the protrusion and the flange part of the trolley beam.

3. The staircase lifting gate type elevator according to claim 2, The guide mechanism has a rectangular shape when viewed from above, and the width dimension of the short side of the rectangular guide mechanism is set to be equal to or shorter than the width dimension of the upper or lower connecting member.

4. The staircase lifting gate type elevator according to claim 3, A portal-type lifting structure for staircase lifting, characterized in that the dimension between the flange portion of the trolley beam and the protrusion portion of the guide mechanism is greater than the thickness dimension of the flange portion of the trolley beam.

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