Electric winch and crane equipment

Abstract

In a hoist frame of a conventional electric hoist, parts are cut into a plurality of parts according to a required size and are integrally formed through welding-based joint, so that the welding defects of a welding structure are difficult to detect through all-number non-destructive inspection, and the management of welding quality is high in cost. In addition, there is a problem that the amount of CO2 discharged is increased due to manufacturing energy during welding. The present invention provides an electric hoist and a crane apparatus having a rope drum around which a wire rope is wound and an electric motor capable of rotating the rope drum, the electric hoist comprising a pair of side plates for holding both ends of the rope drum and a plurality of support shafts constituting a hoist frame, the support shafts being arranged parallel to the shaft of the rope drum, the two ends of the side plate penetrate through the holes formed in the side plate and are fastened to the side plate, so that the welding quality management is not needed, the energy consumption during manufacturing based on welding is avoided, and the CO2 emission amount caused by the manufacturing of the electric winch can be reduced.

Description

Technical Field

[0001] The invention relates to an electric winch and a crane device. Background Art

[0002] An electric winch is a lifting device of a crane for lifting and transporting heavy objects. The winch is composed of components such as an electric motor and a reducer that drive a rope drum that winds a wire rope for lifting and lowering a suspended load, and an electric trolley that serves as a traversing device, which are supported on a winch frame.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 10-129988

[0006] Patent Document 2: Japanese Patent Application Publication No. 2014-156318 Summary of the invention

[0007] Technical problem to be solved by the invention

[0008] The hoist frame of the existing electric hoist is a hoist frame in which a thick plate member is cut into multiple pieces according to the necessary size and connected by welding to form an integral body, as shown in patent documents. However, it is difficult to detect welding defects of the welded structure by full non-destructive inspection, and the management of welding quality costs a lot of money.

[0009] In addition, there is also the CO generated by the manufacturing energy during welding. 2 The problem of increased discharge volume.

[0010] Therefore, for example, the hoisting machine frame disclosed in Patent Document 2 includes a first frame and a second frame, and the base and the end of each frame are brought into contact with each other and welded, thereby reducing the number of welded parts.

[0011] Technical solutions to solve problems

[0012] The above-mentioned problem is solved by an electric winch, which includes a rope drum with a wire rope wound around it and an electric motor for rotating the rope drum. The electric winch includes: a pair of side plates for holding the two ends of the rope drum; and a plurality of support shafts constituting a winch frame, which are arranged parallel to the axis of the rope drum, and whose two ends pass through holes provided in the side plates and are fastened to the side plates.

[0013] Effects of the Invention

[0014] The present invention performs the joining of the winch frame without welding, thereby eliminating the need for welding quality management and not using energy during manufacturing based on welding, thereby reducing CO2 emissions caused by the manufacture of the electric winch. 2 Discharge volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a perspective view of the appearance of a crane with an electric hoist according to an embodiment of the present invention.

[0016] Figure 2 It is a perspective view of the electric hoist in the embodiment of the present invention.

[0017] Figure 3 yes Figure 2 Partial cross-sectional view of the electric winch.

[0018] Figure 4 It is an exploded view of the electric winch according to the embodiment of the present invention.

[0019] Figure 5 It is a three-dimensional view of a winch frame according to an embodiment of the present invention.

[0020] Figure 6 It is a front view of a winch frame according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] Below, use Figures 1 to 6 The present invention is not limited to the illustrated examples.

[0022] Figure 1 It is a perspective view of the overall structure of a crane with an electric hoist according to an embodiment of the present invention.

[0023] The crane saddle 20a including a traveling driving wheel 25a and a driven wheel 26a is provided on the traveling rail 11a so as to be able to travel.

[0024] A crane saddle 20b having a traveling driving wheel 25b and a driven wheel 26b is provided on the traveling rail 11b so as to be able to travel.

[0025] The electric trolley 2 is provided on the transverse rail 10 so as to be movable on the transverse rail 10 , and includes a saddle control unit 12 for controlling the crane saddles 20 a and 20 b .

[0026] An electric hoist 1 for moving a heavy object up and down is mounted on the electric trolley 2, and a crane hook 4 for hanging the heavy object is provided on the electric hoist 1.

[0027] The electric hoist 1 also includes a hoist control unit 5 for controlling the electric hoist 1 and the electric trolley 2, and an operation input device 3 for operating the crane with the electric hoist.

[0028] Next, use Figure 1 The operation of the crane with an electric winch is described. When the operator uses the operation input device 3 to input an operation, the winch control unit 5 controls the movement of the electric winch 1 and the electric trolley 2 according to the input control signal, and can move the weight installed on the crane hook 4 in the Z direction and the -Z direction or the X direction and the -X direction.

[0029] Similarly, the saddle control unit 12 can control the movement of the crane saddles 20a and 20b based on the control signal input to the operation input device 3 to move the weight attached to the crane hook 4 in the Y direction and the -Y direction.

[0030] Next, use Figures 2 to 3 The appearance stereoscopic diagram illustrates the overall structure of the electric winch of this embodiment.

[0031] like Figures 2 to 3 As shown, the rope drum 37 is rotatably supported by the shaft 34 inside the right side plate 50 and the left side plate 51 which are components of the hoist frame 30, and the rope drum 37 is rotationally driven by the driving device to wind and feed out the wire rope 36.

[0032] On the outer side of the right side plate 50 , the motor 31 as a driving device for rotating the rope drum 37 and the brake 35 as a braking mechanism of the motor 31 are mounted in combination.

[0033] A reducer 40 for adjusting the rotation speed of the rope drum 37 is assembled and installed on the outer side of the winch frame of the left side plate 51, and the driving shaft 32 of the motor 31 and the driven shaft 41 of the reducer 40 are connected by a coupling 33 to transmit rotation.

[0034] The shaft 34 supporting the rope drum 37 is connected to the gear final stage of the speed reducer 40 , and the rope drum 37 is rotated by the power of the motor 31 .

[0035] The drum frame cover 59 is a cover for protecting the rope drum which is the rotating part so that it is not easy for hands to touch it, and has the following functions: by being clamped between the right side plate 50 and the left side plate 51, when the support shaft 52 is installed and fixed to the right side plate 50 and the left side plate 51, the right side plate 50 and the left side plate 51 are prevented from twisting, so that the right side plate 50 and the left side plate 51 become roughly parallel.

[0036] Furthermore, by installing the drum frame cover 59, the strength of the hoisting frame can be increased.

[0037] The reel frame cover needs to have a shape that is connected to each side plate at two points, and is preferably a square plate-shaped member. In addition, if it is usually installed at a high place and it is not necessary to avoid hand contact, a metal wire or a strip-shaped metal member with the same strength as the metal wire can be crossed in an X shape to connect the side plates to each other.

[0038] The control unit frame cover 60 is a cover for installing the winch control unit 5, and by being clamped between the right side plate 50 and the left side plate 51, it prevents the right side plate 50 and the left side plate 51 from twisting when the support shaft 52 is installed and fixed to the right side plate 50 and the left side plate 51, and has the function of making the right side plate 50 and the left side plate 51 roughly parallel.

[0039] The short support shaft 61 has the function of fixing the right side plate 50 and the drum frame cover 59, the left side plate 51 and the drum frame cover 59 respectively by shortening the length of the support shaft 52 in the drum center axis direction so as not to interfere with the wire rope 36.

[0040] Figure 4 1 is an exploded view of an electric winch according to an embodiment of the present invention. The right side plate 50 and the left side plate 51 are connected by three support shafts 52 and assembled roughly in parallel. Since both ends of the support shaft 52 are fixed to the side plate by bolts or nuts, welding is not required.

[0041] Furthermore, since the fastening is performed by bolts or nuts, when the side plates are not assembled to be substantially parallel, they can be adjusted by adjusting the fastening of the bolts.

[0042] When fixing with bolts, a recessed portion for inserting the bolts is provided at the end of the support shaft and a thread is provided. When fixing with nuts, a thread is provided on the outer periphery of the end of the support shaft.

[0043] Furthermore, since the hoist uses ropes of various lengths, the length of the rope drum 37 also varies according to the length of the rope. Therefore, by using the support shaft 52 having a length corresponding to the length of the rope drum 37, it is possible to cope with ropes of various lengths.

[0044] Therefore, several winch frames are assembled by welding according to the length of the slings, and there is no need to maintain inventory to meet customer requirements.

[0045] Figure 5 The hoist frame 30 is a perspective view of the hoist frame according to the embodiment of the present invention. The hoist frame 30 is formed by connecting four support shafts 52 , a right side plate 50 , and a left side plate 51 together through eight locking stoppers 53 .

[0046] The right side plate 50 and the left side plate 51 have their surfaces roughly parallel to each other, and four holes are provided on the surfaces of the right side plate 50 and the left side plate 51, the diameter of which is larger than the small diameter portion at both ends of the support shaft 52 and smaller than the large diameter portion in the center of the support shaft 52, and the support shaft 52 passes through the holes.

[0047] A locking baffle 53 is fixed to the end face of the support shaft 52 located on the outer side of the right plate 50 and the left plate 51 by bolts or nuts. The locking baffle 53 has a diameter larger than the hole diameter through which the support shaft of the right plate 50 and the left plate 51 passes, thereby fixing the position of the outer side of the right plate 50 and the left plate 51 by the locking baffle 53.

[0048] The diameter of both ends of the support shaft 52 is smaller than that of the central portion, and the boundary forms a surface perpendicular to the axial direction of the support shaft. This surface contacts the side plate to determine the fastening position of the support shaft and the side plate.

[0049] The relative surfaces of the right side plate 50 and the left side plate 51 are fixed in position by contacting the surface of the large diameter portion in the central part of the support shaft 52. If the full length of the small diameter portion located at the end of the support shaft 52 is formed to be greater than the minimum plate thickness that can be manufactured for the right side plate 50 and the left side plate 51 and less than the maximum plate thickness that can be manufactured for the right side plate 50 and the left side plate 51, the shaking caused by the axial movement of the right side plate 50 and the left side plate 51 on the support shaft 52 can be minimized.

[0050] In addition, the structure of the locking baffle 53 is not limited to the example shown in the figure, and the following method may also be used: the total length of the small diameter portion at the end of the support shaft 52 is made longer than the thickness of the right plate 50 and the left plate 51, so that a locking groove with a width greater than the thickness of the locking baffle 53 is engraved on the side plate perpendicularly to the axis of the cylinder at the small diameter portion at the end of the support shaft 52, thereby inserting the roughly rectangular locking baffle 53 into the groove to fix the right plate 50 and the left plate 51.

[0051] At this time, the cylindrical axial length of the small diameter portion of the support shaft 52 from the end surface of the large diameter portion of the support shaft 52 to the start position of the lock groove is greater than the thickness of the right plate 50 and the left plate 51.

[0052] Figure 5The electric trolley 2 for moving the electric hoist 1 on the horizontal track 10 is mounted on two support shafts 52 arranged in parallel among the four support shafts 52 through the plate-shaped driving trolley frame 54 and the driven trolley frame 55 of the electric trolley 2.

[0053] The driving trolley frame 54 and the driven trolley frame 55 are each provided with two holes through which the support shaft 52 is passed for installation.

[0054] The driving trolley frame 54 and the driven trolley frame 55 are independent of each other, and the distance between the driving trolley frame 54 and the driven trolley frame 55 in the cylindrical central axis direction of the support shaft 52 can be arbitrarily changed.

[0055] The interval between the carriage frames is changed to an appropriate distance according to the width of the horizontal rail 10 , and the carriage frames can be mounted on the horizontal rail 10 having a width within the range of the right plate 50 and the left plate 51 .

[0056] This makes it possible to apply the traverse rail 10 to a wider range of structures than that shown in Patent Document 1.

[0057] In the positioning of the driving trolley frame 54 and the driven trolley frame 55, for example Figure 5 The fixing ring 56 is shown to be used and is used to be fixed to the support shaft 52 by bending itself by tightening bolts.

[0058] The fixing ring 56 is passed through the support shaft 52, and eight fixing rings 56 are arranged in total in front and behind the surface of the driving trolley frame 54 and in front and behind the surface of the driven trolley frame 55. The driving trolley frame 54 and the driven trolley frame 55 are clamped by the fixing ring 56, so that the driving trolley frame 54 and the driven trolley frame 55 can be independently fixed to any position of the cylindrical center axis of the support shaft 52.

[0059] In order to simply fix the driving trolley frame 54 and the driven trolley frame 55 in a suitable position relative to the designated transverse track 10, for example, Figure 5 As shown, two support shafts 52 supporting the driving trolley frame 54 and the driven trolley frame 55 are provided with threads at the large diameter portions of the substantially cylindrical shapes.

[0060] Instead of the fixing ring 56 , a total of eight connecting nuts 57 are arranged in front and rear of the surface of the driving trolley frame 54 and the surface of the driven trolley frame 55 . The connecting nuts 57 have threads formed on the inner diameter to mesh with threads formed on the support shaft 52 .

[0061] By sandwiching and fastening the driving trolley frame 54 and the driven trolley frame 55 with the fixing ring 56 , the driving trolley frame 54 and the driven trolley frame 55 can be independently fixed to any position in the cylindrical center axial direction of the support shaft 52 .

[0062] Since the thread is provided, the position of the connecting nut 57 is not easily displaced when the driving trolley frame 54 and the driven trolley frame 55 are set, and the fastening is easy.

[0063] If, on the basis of the connecting nut 57, a total of four fixing rings 56 are arranged in the loosening direction of the four connecting nuts 57 arranged on the outer sides of the driving trolley frame 54 and the driven trolley frame 55, the connecting nut 57 can alleviate the vibration caused by the up and down movement of the electric winch 1 and the horizontal movement of the electric trolley 2, and can prevent the accidental movement of the trolley.

[0064] It is possible to prevent the electric winch 1 from falling off from the transverse rail 10 due to the movement of the driving trolley frame 54 toward the right side plate 50 and the movement of the driven trolley frame 55 toward the left side plate 51 .

[0065] In addition, if Figure 6 As shown, the sheave 42 can be supported on the support shaft 52 by the sheave cover 43. The position of the sheave cover 43 can be fixed by a substantially cylindrical positioning ring 58 of an arbitrary length.

[0066] By passing the support shaft 52 through the inner diameter of the positioning ring 58 , the positioning ring 58 is rotatably supported by the support shaft 52 .

[0067] Thus, the side surface of the sheave cover 43 contacts the cross section of the first positioning ring 58 disposed between the right side plate 50 and the sheave cover 43 and the cross section of the second positioning ring 58 disposed between the left side plate 51 and the sheave cover 43, thereby restricting the support axial position of the sheave cover 43.

[0068] Thus, according to the present invention, the hoist frame is joined without welding, so that the management of welding quality is not required, and energy consumption during manufacturing due to welding is not required, so that CO2 emissions caused by the manufacture of the electric hoist can be reduced. 2 Emissions.

[0069] Furthermore, it is not necessary to prepare a hoisting machine frame for each model of the hoisting machine, and by combining support shafts, rope drums, etc. having different lengths with the side plates, it is possible to provide a variety of hoisting machines.

[0070] Description of Reference Numerals

[0071] 1…electric winch, 2…electric trolley, 3…operation input device, 4…crane hook, 5…winch control unit, 10…travel track, 11a, 11b…travel track, 12…saddle control unit, 20a, 20b…crane saddle, 25a, 25b…travel driving wheel, 26a, 26b…driven wheel, 30…winch frame, 31…motor, 32…drive shaft, 33…coupling, 34…shaft, 35…brake, 36…wire rope, 37…rope drum, 40…reducer, 41…driven shaft, 42…pulley, 43…pulley cover, 50…right side plate, 51…left side plate, 52…support shaft, 53…locking baffle, 54…driving trolley frame, 55…driven trolley frame, 56…fixing ring, 57…connecting nut, 58…positioning ring, 59…drum frame cover, 60…control unit frame cover, 61…short support shaft.

Claims

1. An electric winch having a rope drum on which a wire rope is wound and a motor capable of rotating the rope drum, characterized in that: include: a pair of side plates for holding both ends of the rope drum; and A plurality of support shafts constituting the hoist frame are arranged in parallel with the axis of the rope drum, and both ends thereof penetrate through holes provided in the side plates and are fastened to the side plates.

2. The electric winch according to claim 1, characterized in that: The support shaft has a large diameter portion with a larger diameter in the center, small diameter portions with smaller diameters at both ends, and a fixing surface perpendicular to the support shaft at a portion changing from the large diameter portion to the small diameter portion. The support shaft passes through the hole of the side plate, and the interval between the pair of side plates is determined by the abutment between the fixing surface and the side plate. The support shaft is fixed by a nut arranged on the opposite surface of the side plate abutted by the fixing surface and the fixing surface.

3. The electric winch according to claim 2, characterized in that: The drum frame cover includes a square plate-shaped member, which is fastened to the side plates constituting both ends of the hoist frame and reinforced so that a plurality of support shafts become substantially parallel.

4. The electric winch according to claim 2, characterized in that: A control unit frame cover is provided on which a control unit for controlling the hoist can be mounted. The control unit is a square plate-shaped member and is fastened to the side plates constituting both ends of the hoist frame to reinforce the plurality of support shafts so as to be substantially parallel.

5. The electric winch according to claim 1, characterized in that: In the support shaft fixed to the upper part of the side plate, at least two of the support shafts have large diameter portions provided with thread teeth for fixing the trolley frame. The support shaft passes through a hole provided in the trolley frame. The two sides of the trolley frame are positioned and fixed to the support shaft by connecting nuts. A fixing ring is arranged on one side of the trolley frame close to the side plate to prevent the connecting nut from loosening.

6. The electric winch according to claim 2, characterized in that: The utility model comprises a rope wheel for winding a steel wire rope, wherein the rope wheel is suspended on the supporting shaft by a rope wheel cover, and the rope wheel cover determines its suspension position in the axial direction of the supporting shaft by means of a positioning ring.

7. The electric winch according to claim 6, characterized in that: comprising a plurality of said positioning rings, The positioning ring is substantially cylindrical, and its inner diameter is larger than the outer diameter of the large diameter portion of the support shaft, and can be inserted into the support shaft. The sheave position is fixed by suspending the sheave cover between the positioning rings.

8. A crane device, comprising a travel track, a crane saddle capable of traveling on the travel track, a transverse track arranged on the crane saddle, and an electric winch installed on the transverse track via a trolley, wherein the crane device is characterized in that: The electric winch comprises: a rope drum on which a wire rope is wound; an electric motor capable of rotating the rope drum; a pair of side plates for holding both ends of the rope drum; and A plurality of support shafts constituting the hoist frame are arranged in parallel with the axis of the rope drum, and both ends thereof penetrate through holes provided in the side plates and are fastened to the side plates.

9. The crane device according to claim 8, characterized in that: In the support shaft fixed to the upper part of the side plate of the electric hoist, at least two of the support shafts have large diameter portions provided with threads for fixing the trolley frame. The support shaft passes through a hole provided in the trolley frame. The two sides of the trolley frame are positioned and fixed to the support shaft by connecting nuts. A fixing ring is arranged on one side of the trolley frame close to the side plate to prevent the connecting nut from loosening.

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