JP2013107772A - Overhead traveling crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overhead traveling crane that can move a burden to an outside position beyond a traveling rail.SOLUTION: The overhead traveling crane A includes: main and sub traveling rails 1, 2 laid in a structure T for housing heavy machinery; a main traveling mechanism part 10 which travels along the main traveling rail; a sub traveling mechanism part 40 which travels along the sub traveling rail; and a transverse rail 3 which intersects the main and sub traveling rails, is elongated beyond the sub traveling rail, is suspended by the main and sub traveling mechanism parts and allows a burden transfer means 70 to move along the transverse rail; wherein the transverse rail is freely rotatably suspended on the main traveling mechanism part, the transverse rail is freely rotatably and relatively movably suspended on the sub traveling mechanism part and a traveling wheel which travels on the main traveling rail and an auxiliary wheel which rolls with respect to the lower surface of the main traveling rail are mounted on the main traveling mechanism part.

Description

  The present invention relates to an overhead crane that is optimal for transferring goods in factories and warehouses and that has a very wide transport range that can be transported to places that exceed traveling rails.

  Traditionally, overhead cranes have been used to transport luggage in factories and warehouses. As is well known, overhead cranes are provided with a pair of traveling rails along the opposite walls of the building. The traveling rails run over the traveling rails, and the chain blocks travel on the transverse rails. It was attached in a possible manner, and further, a load was hung or slung on this chain block and transferred from one point to another point (Patent Document 1).

JP 2000-233888 A

  In such an overhead crane, when a load is moved from one place to another, the load is hung on the chain block and travels. Therefore, when the chain block moves to the position outside the traveling rail, the moving side Since the traveling vehicle on the opposite side is lifted from the traveling rail with the traveling vehicle as a fulcrum, the movement range of the chain block on the transverse rail is limited between the traveling rails.

  The present invention has been made in view of the problems of the conventional example, and an object of the present invention is to provide an overhead crane capable of moving a load to an outer position beyond a traveling rail.

The overhead crane (A) of the present invention is
The main and secondary rails (1) and (2) laid in the building (T),
A main traveling mechanism (10) that travels along the main traveling rail (1);
A follower mechanism (40) that travels along the follower rail (2);
Crossing the main and sub-travel rails (1) and (2) and extending beyond the sub-travel rail (2), suspended on the main and sub-travel mechanisms (10) and (40), 70) In an overhead crane (A) composed of a traversing rail (3) on which it moves,
A traverse rail (3) is suspended rotatably on the main travel mechanism (10), and a traverse rail (3) is suspended on the slave travel mechanism (40) so as to be rotatable and relatively movable. And
The main traveling mechanism (10) includes a traveling wheel (13) that travels on the main traveling rail (1) and an auxiliary wheel (14) that rolls against the lower surface (1k) of the main traveling rail (1). It is equipped with.

  According to this, it is not possible for the operator to hold the load transfer means (70) with the load suspended and move it from the point (X) to the point (Y) between the main and secondary travel rails (1) and (2). Of course, since the main traveling mechanism (10) is equipped with auxiliary wheels (14) that roll against the lower surface (1k) of the main traveling rail (1), the secondary traveling rail (2 ), The auxiliary wheel (14) rolls on the lower surface (1k) of the main traveling rail (1) and supports it from below, so that the main traveling mechanism (10) Can be prevented, the load transfer means (70) can be moved out of the slave rail (2), and the load transfer range can be greatly expanded.

  The traverse rail (3) is suspended from the main travel mechanism (10) so as to be rotatable, and the traverse rail (3) is suspended from the sub travel mechanism (40) so as to be rotatable and relatively movable. Therefore, even if the main and sub-travel rails (1) and (2) are not parallel, the main and sub-travel mechanisms (10) and (40) are matched to the distance between the main and sub-travel rails (1) and (2). ) Changes, the traverse rail (3) moves smoothly along the main and subordinate traveling mechanisms (10) and (40).

It is a front view of the crane concerning the present invention. It is a side view of the main travel mechanism part used for this invention. FIG. 3 is a front view of FIG. 2. It is a side view of the subordinate traveling mechanism part used for this invention. It is a top view showing the whole crane concerning the present invention.

  The present invention will be described below with reference to the illustrated embodiments. The crane (A) of the present invention has two main, subordinate traveling rails (1), (2), a traverse rail (3) and main, subordinate traveling installed on the ceiling of a building (T) such as a factory. It consists of mechanism parts (10) and (40). The main and sub-travel rails (1) and (2) and the traverse rail (3) are composed of I-shaped steel or H-shaped steel, and the main travel rail (1) extends horizontally to the upper and lower ends of the main body. The webs (1y) and (1w), the webs (2y) and (2w), and the webs (3y) and (3w) are extended over the entire length of the driven rail (2). Stoppers (3s) are provided at both ends of the transverse rail (3).

  As shown in FIGS. 2 and 3, the main traveling mechanism section (10) is mounted on the main traveling rail (1) and travels along the main traveling section (11) and the main suspension section that suspends the transverse rail (3). (21) and a main connecting part (30) for connecting the main traveling part (11) and the main suspension part (21).

  The main traveling part (11) is spaced apart from the pair of left and right main traveling side plates (12), the auxiliary wheel (14) provided through the center of the main traveling side plate (12), and the upper end of the main traveling side plate (12). A pair of front and rear traveling wheels (13), a main traveling bearing block (18) provided between the lower ends of the main traveling side plate (12) and its accessories, the outside of both main traveling side plates (12) And a height adjusting mechanism (15) for adjusting the height of the auxiliary wheel (14), a web guide (16), and the like.

  The auxiliary wheel (14) is composed of a main shaft bolt (14a) and a rotating roller (14c) provided through the main traveling side plate (12), and the main shaft bolt (14a) is the center of the main traveling side plate (12). The main shaft nut (17) is screwed into the female screw (14b) via a washer. A rotating roller (14c) is rotatably mounted around the main shaft bolt (14a) via a bearing (14d) at the center of the main shaft bolt (14a). Sleeves (14e) are attached to both sides of the rotating roller (14c), and the rotating roller (14c) is positioned at the center between the main traveling side plates (12).

  The height adjustment mechanism (15) that adjusts the height of the spindle bolt (14a) is a pair of height adjustment blocks fixed on the top and bottom of the vertical hole (12a) on the outer surfaces of both main traveling side plates (12). 15a) (15b) and the height adjustment block (15a) (15b) were screwed so as to contact the bolt head (14h) of the main shaft bolt (14a) and the main shaft nut (17) from above and below. It comprises contact bolts (15t) (15u). The spindle bolt (14a) is moved up and down along the vertically elongated hole (12a) by screwing and screwing the contact bolt (15t) (15u), and the height of the auxiliary wheel (14) is adjusted and fixed. Can be done. When the height adjustment is completed, it is fixed with a nut (15n).

  The traveling wheels (13) are provided at the upper ends of both main traveling side plates (12) so as to be spaced apart from each other in the horizontal direction, and are disposed in front of and behind the auxiliary wheels (14). The traveling wheel (13) includes a traveling shaft (13a) attached to the main traveling side plate (12), a bearing (13b) attached to the traveling shaft (13a), and a traveling shaft (13a) via the bearing (13b). And a traveling roller (13c) that is rotatably attached to the body. The height of the auxiliary wheel (14) is adjusted so that the distance between the traveling roller (13c) and the rotating roller (14c) is approximately equal to the wall thickness of the lower web (1w) of the main traveling rail (1). It has become so.

  The web guide portion (16) includes a guide roller (16a), a guide roller mounting plate (16b), a fastener (16c), and the like. The guide roller (16a) is, for example, a radial bearing, and is a circular member that rotates smoothly when contacting the side edge of the web (1w). The guide roller mounting plate (16b) is attached by screwing or welding so that it protrudes outward in the front-rear direction and at the front and rear edges of both main traveling side plates (12). . And the guide roller (16a) is rotatably attached to the front-end | tip part with the fastener (16c) comprised with a volt | bolt, a nut, and a washer. The installation position of the guide roller (16a) is arranged to coincide with the clearance between the traveling roller (13c) and the rotating roller (14c) that sandwich the web (1w) of the main traveling rail (1) from above and below. .

  The main traveling bearing block (18) is bolted to the main traveling side plate (12) at the lower part between the two main traveling side plates (12), and a stepped round hole (18a) is formed in the center with a rectangular block. The bearing (18b) is engaged with the step (18c) on the lower surface side. Then, the pressing ring (18d) is fitted into the round hole (18a) from the upper surface side and is bolted to the main traveling bearing block (18), and the bearing (18b) is formed by the stepped portion (18c) and the pressing ring (18d). The outer ring is clamped and fixed. The shape of the pressing ring (18d) includes a ring-shaped main body portion (18f) and an outer ring pressing portion (18g) protruding from the main body portion (18f). The through hole (18h) formed in the main body portion (18f) is formed in a size that allows a neck portion (31b) of a connecting bolt (31) described later to be inserted with a slight gap.

  The main suspension part (21) includes a pair of front and rear main suspension side plates (22), a main suspension side bearing block (28), a main suspension side bearing (28b), a clamping block (23), and a bolt mounting block (24) and a clamping bolt (24a). The main suspension side bearing block (28) has the same shape as the main traveling bearing block (18) and is a square block bolted to the upper end between the main suspension side plates (22) with the top and bottom reversed. In the center, a stepped round hole (28a) is formed, and a bearing (28b) fitted in the round hole (28a) is in contact with the stepped portion (28c). Then, the pressing ring (28d) is fitted into the round hole (28a) from the lower surface side and bolted to the main suspension side bearing block (28), and the bearing (28b) is formed by the stepped portion (28c) and the pressing ring (28d). ) Is clamped and fixed. The shape of the pressing ring (28d) includes a ring-shaped main body portion (28f) and an outer ring pressing portion (28g) protruding from the main body portion (28f). The through hole (28h) formed in the main body portion (28f) is formed in such a size that a neck portion (32b) of a lower connection bolt (32) described later can be inserted with a slight gap.

  The clamping block (23) is a simple rectangular block, and is bolted to an intermediate portion between both main suspension side plates (22). A pair of bolt mounting blocks (24) are bolted to the inner bottom ends of the main suspension side plates (22), and the upper web of the traverse rail (3) is sandwiched between the clamping blocks (23). A gap is provided so that (3Y) is sufficiently inserted. The clamping bolt (24a) is attached to the bolt mounting block (24) so as to be able to be screwed and screwed toward the clamping block (23). The body portion of the traversing rail (3) enters between the bolt mounting blocks (24).

  The main connecting portion (30) is composed of upper and lower connecting bolts (31) and (32) having the same shape, one connecting nut (33), and a cylindrical sleeve (34). The connecting bolts (31) and (32) are the head portions (31a) and (32a), the head portions (31a) and (32a) having a diameter larger than the inner diameter of the through holes (18h) and (28h) of the pressure rings (18d and 28d) The necks (31b) (32b) and necks (31b) (32b) are slightly concentric with the inner diameters of the through holes (18h) (28h) of the pressure rings (18d) (28d). The fitting portion (31c) (32c) that fits into the bearing (18b) (28b), and the male screw portion (31d) (32d) provided concentrically with the fitting portion (31c) (32c). ing.

  Two connecting bolts (31) and (32) for the main connecting portion (30) are prepared for the main traveling portion and the main suspension portion having the same shape as described above, as shown in FIGS. Thus, the main traveling portion (11) and the main suspension portion (21) are respectively attached to the bearings (18b) and (28b), and the male screw portion (31d) (32d) is further connected to one connecting nut (33). Is screwed in from above and below. Further, the sleeve (34) is put on the coupling nut (33), and the sleeve (34) abuts the bearings (18b) (28b) on the outer ring so that the main traveling part (11) and the main suspension part (21) The interval is fixed and fixed with a detent (35) such as a through bolt.

  The slave travel mechanism section (40) includes a slave travel section (41), a slave suspension section (51), and a slave connection section (60), like the main travel mechanism section (10). The slave travel part (41) and the slave suspension part (51) have a structure in which the top and bottom are simply different.

  A pair of traveling wheels (43) are respectively attached to the upper corners of the pair of left and right slave travel side plates (42) of the slave travel unit (41) at a predetermined interval. The structure of the traveling wheel (43) is the same structure as the traveling wheel (13) of the main traveling part (11), and is formed of a traveling shaft (43a), a bearing (43b), and a traveling roller (43c). The slave side locking block (44) is a rectangular block, and a stepped round hole (44a) is formed at the center, and a rotation support ring (45) is fitted into the stepped portion (44b). The rotation support ring (45) has a concentric stepped round hole (45a) in the center, and a step portion (45b) is formed on the inner peripheral surface.

  The web guide portion (46) of the slave travel portion (41) is also the same shape as the web guide portion (16) of the main travel portion (11), and the guide roller (46a), the guide roller mounting plate (46b), and the fastener (46c) ) Etc. The guide roller (46a) is, for example, a radial bearing, and is a circular member that rotates smoothly when it contacts the side edge of the lower web (2w) of the driven rail (2). The guide roller mounting plate (46b) is attached by screwing or welding so as to protrude in the front-rear direction and outward from the lower part of the front and rear edges of the slave traveling side plate (42). And the guide roller (46a) is rotatably attached to the front-end | tip part with the fastener (46c) comprised with a volt | bolt, a nut, and a washer. The installation position of the guide roller (46a) is arranged so as to coincide with the web (2w) of the secondary traveling rail (2).

  A pair of secondary suspension rings (53) are attached to the left and right sides of the secondary suspension side plates (52) of the secondary suspension portion (51) at predetermined intervals. The structure of the secondary suspension ring (53) is the same as that of the traveling wheel (13) and the traveling wheel (43), and is formed by a suspension shaft (53a), a bearing (53b), and a suspension roller (53c). Yes. The secondary suspension side locking block (54) is a rectangular block, and a stepped round hole (54a) is formed in the center, and the rotary suspension ring (55) is fitted into the round hole (54a). (54b) is engaged. The rotary suspension ring (55) has a concentric stepped round hole (55a) formed in the center, and a stepped portion (55b) formed on the inner peripheral surface.

  The web guide portion (56) of the sub-suspending portion (51) includes a guide roller (56a), a guide roller mounting plate (56b), a fastener (56c), and the like. The guide roller (56a) is, for example, a radial bearing as described above, and is a circular member that rotates smoothly when it contacts the side edge of the upper web (3y) of the transverse rail (3). The guide roller mounting plate (56b) is attached to the upper part of the left and right edges of the secondary suspension side plate (52) by screwing or welding so as to protrude outward in the left-right direction. And the guide roller (56a) is rotatably attached to the front-end | tip part with the fastener (56c) comprised with a volt | bolt, a nut, and a washer. The installation position of the guide roller (56a) is arranged so as to coincide with the web (3y) of the transverse rail (3).

  The sub-connecting portion (60) includes upper and lower connecting nuts (61) and (62), a connecting bolt (63), and accessories thereof. The upper and lower connecting nuts (61) and (62) are cylindrical with outer flanges, and the outer peripheral corner portions of the outer flanges (61a) and (62a) and the cylindrical portions (61b) and (62b) are covered over the entire circumference. Stepped corners (61c) (62c) are formed. And the hole on the outer flange (61a) (62a) side of the stepped through hole (61d) (62d) of the cylindrical part (61b) (62b) is formed in a large diameter, and the narrow hole below it The left and right female screws are respectively engraved, and step portions (61f) and (62f) are formed at the boundary between the female screw portions (61e) and (62e) and the large diameter portion.

  The connecting bolt (63) has a rod-like shape and is provided with male screw parts (63a) and (63b) in which left and right male screws are respectively engraved at both ends, and a spanner hook (63c) is provided at the center. .

  The upper connecting nut (61) is rotatably fitted in the round hole (45a) of the rotation support ring (45) of the follower side locking block (44), and is inserted into the step (45b) of the round hole (45a). It is freely engaged. Similarly, the lower connecting nut (62) is rotatably fitted in the round hole (55a) of the rotary suspension ring (55) of the secondary suspension side locking block (54), and the step portion of the round hole (55a) (55b) is rotatably engaged with the stepped corner (62c) of the lower connecting nut (62).

  The male screw portions (63a) and (63b) carved on the left and right screws of the connecting bolt (63) are respectively threaded on the female screw portions (61e) and (62e) of the upper and lower connecting nuts (61) and (62). The upper and lower connecting nuts (the upper and lower connecting nuts (10) are adjusted in accordance with the distance between the main traveling rail (1) and the transverse rail (3) in the main traveling mechanism (10). Bolts are made through seats (47) and (48) engaged with the step portions (61f) and (62f) of the through holes (61d) and (62d) of 61 and (62). Further, nuts (65) and (66) engraved on the left and right screws are respectively hooked on the male screw portions (63a) and (63b), and the screws for preventing loosening are nuts (65) and (66) and connecting nuts ( 61) Screwed into (62).

  The main traveling section (11) of the main traveling mechanism section (10) configured as described above is attached to the main traveling rail (1) so as to travel. That is, the traveling wheel (13) is locked to the upper surface (1j) of the lower web (1w) of the main traveling rail (1), and the height adjusting mechanism (15) is operated to attach the auxiliary wheel (14). The lower surface (1k) of the web (1w) is contacted or brought close to. The guide roller (16a) sandwiches both side edges of the web (1w). If the distance between the traveling wheel (13) and the auxiliary wheel (14) is inappropriate, it can be adjusted by screwing the contact bolts (15t) (15u) of the height adjustment mechanism (15). it can. When the adjustment is completed, the abutting bolt (15t) (15u) is fixed to the double nut with the nut (15n).

  Similarly, the slave travel part (41) of the slave travel mechanism part (40) is attached to the slave travel rail (2) so as to travel. That is, the traveling wheel (43) is locked to the upper surface of the lower web (2w) of the slave traveling rail (2). The guide roller (46a) sandwiches both side edges of the web (2w).

  Subsequently, the clamping rail (3) between the clamping block (23) and the bolt mounting block (24) is loosened by loosening the clamping bolt (24a) of the main suspension section (21) of the main traveling mechanism section (10). Insert the upper web (3y). Thereafter, the clamping bolt (24a) is screwed to fix the web (3y) to the clamping block (23). Similarly, the web (3y) is locked to the secondary suspension ring (53) of the secondary suspension section (51) of the secondary travel mechanism section (40). Finally, a device such as a chain block which is a load transport means (70) is mounted on the traversing rail (3). A load (71) for hanging a load is attached to the load transfer means (70).

  Thus, at the point (X), the load is lifted by the load transfer means (70) and transferred to the point (Y) or the point (Z). Since the points (X) and (Y) are located between the main and sub-travel rails (1) and (2), the main and sub-suspension sections (21) and (51) of the main and sub-travel mechanisms (10) and (40) However, when the load transport means (70) crosses the follower rail (2), the main travel mechanism part (10) is supported by the slave travel mechanism part (40) as a fulcrum. Although an upward force is applied to press the traveling portion (11) against the lower surface of the web (1w), the main traveling portion (11) is equipped with auxiliary wheels (14), so the lower surface of the main traveling rail (1). (1k) will roll, and the load can be transported smoothly even at the part beyond the slave rail (2).

  Further, the slave suspension part (51) of the slave traveling mechanism part (40) can move while suspending the transverse rail (3) to expand and contract the distance from the master traveling mechanism part (10), and Since the main suspension part (21) of the main traveling mechanism part (10) rotates relative to the main traveling part (11), the main and secondary traveling rails (1) are moved in the movement from the point (X) to the point (Y). ) (2) can move the traverse rail (3) smoothly even if they are not parallel.

(A) Overhead crane
(T) Architect
(1) Main traveling rail
(1k) Bottom surface of main traveling rail
(2) Secondary rail
(3) Traverse rail
(10) Travel mechanism
(13) Running wheel
(14) Auxiliary wheel
(40) Slave travel mechanism
(70) Luggage transfer means

Claims (1)

The main and subordinate rails laid in the building,
A main traveling mechanism that travels along the main traveling rail;
A slave travel mechanism that travels along the slave rail;
In an overhead crane composed of a traverse rail that intersects the main and subordinate travel rails and extends beyond the subordinate travel rail, is hung on the main and subordinate travel mechanisms, and the load transfer means moves.
A traverse rail is suspended in a freely rotating manner on the main traveling mechanism, and a traversing rail is suspended in a freely traveling and relatively movable manner on the slave traveling mechanism.
An overhead crane, wherein the main traveling mechanism is equipped with traveling wheels that travel on the main traveling rail and auxiliary wheels that roll against the lower surface of the main traveling rail.

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